THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 27(9),

Size: px
Start display at page:

Download "THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 27(9),"

Transcription

1 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 27(9), ISSN (Print) ISSN X (Online) X-Band Design of the Reconfigurable Frequency Selective Surface for X-Band Applications with Improved Isolation 이인곤 박용배 전흥재 김윤재 홍익표 In-Gon Lee Yong-Bae Park* Heung-Jae Chun** Yoon-Jae Kim*** Ic-Pyo Hong 요약 X-, (frequency selective surface). FSS Four-legged loaded, Four-legged loaded ON/OFF,, ON/OFF. FSS WR-90. Abstract This paper presents the design of reconfigurable frequency selective surfaces for X-band bandpass operation with improved isolation. The proposed reconfigurable FSS is composed of a four-legged loaded element, a inductive stub and a bias grid. The PIN diode is located between the four-legged loaded element and the stub, which can control the frequency response of reconfigurable FSS by ON/OFF state. By adjusting the length of the stub, the desired bandpass frequency and the improved isolation between ON and OFF state can be obtained. For validation of simulated results, we have carried out transmission characteristic measurements using rectangular waveguide of WR-90. The measured results are in good agreements with the simulated results. Key words: Reconfigurable Frequency Selective Surface, Four-Legged Loaded Element, Isolation, Transmission. 서론 (unit cell), [1]. (FSS: Frequ-. (Department of Information & Communication Engineering, Kongju National University) * (Department of Electrical & Computer Engineering, Ajou University) ** (Department of Mechanical Engineering, Yonsei University) *** (Agency for Defense Development) Manuscript received April 27, 2016 ; Revised June 23, 2016 ; Accepted September 7, (ID No ) Corresponding Author: Ic-Pyo Hong ( iphong@kongju.ac.kr) c Copyright The Korean Institute of Electromagnetic Engineering and Science. All Rights Reserved. 791

2 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 9, Sep ency Selective Surface), [2] [4]. FSS,.,,,,, [1]. FSS FSS,,,. FSS [5], [6], [7] (RCS: Radar Cross Section) [8]. FSS,, [9], (Reconfigurable-FSS). FSS MHz THz,,,,,,.,, [9],[10]. FSS,,.,, [11],[12]. FSS,,,,,. RF, [10],[13]., (PIN), RF MEMS(Micro-Electro-Mechanical Systems),,.,,, [14] [22]. 792

3 X-Band, (+V), (0 V) X- Four-legged loaded FSS. FSS, [14] [22], [15],[16],[22], [20],[22],.,,. FSS ON/OFF X- C-,.. 재구성 FSS 구조의설계 FSS Four-legged loaded, (Via hole), Π. FSS (RF choke, resistor),,, [10]. ANSYS HFSS Floquet,,,. FSS 1(a) (b),, 1. X- ON/OFF MACOM MA4PBL027, 1 (c) mm, (ε r) 3.5, (tanδ) Taconic RF-35, 0.3 mm. FSS, TE, TM, (0 ) 15, 30. TE FSS 2(a), TM 2(b), Π L 5, 2(c). FSS 표 1. FSS Table 1. Design parameters & equivalent values of PIN diode. Classification Parameter Value Parameter Value Dimensions PIN diode L mm L mm L mm W mm L mm W mm L mm W mm L D 0.15 uh R F 0.05 Ω C R 0.03 pf R R 100 kω 793

4 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 9, Sep 윗면과 아랫면 (a) TE mode (a) (a) Top and bottom view (b) TM mode 측면 (b) (b) Side view 다이오드 등가회로 (c) (c) Equivalent circuit of PIN diode 그림 1. 제안된 재구성 FSS의 단위구조와 다이오드 등가 회로 재구성 (c) Parametric analysis 구조의 계산된 투과 손실 결과 Fig. 1. Designed reconfigurable FSS and equivalent circuit of PIN diode. 그림 2. FSS Fig. 2. Simulated transmission characteristic of reconfigurable FSS. 결과로부터 입사파의 수직 입사를 기준으로 공진 주파수 는 다이오드의 단락 상태에서 9.98 GHz, 3 db 대역폭은 1.41 GHz, db 794 개방 상태에서 공진 주파수는 6.29 GHz, 3 대역폭은 1.68 GHz으로 약 3.61 GHz의 동작 주파수

5 X-Band (a) -10 GHz (a) ON-10 GHz (b) -10 GHz (b) OFF-10 GHz 표 2. L 5 Table 2. Transmission characteristics for variation of parameter "L 5". L 5 [mm] f ON [GHz] f OFF [GHz] f offset [GHz] Isolation (f ON-f OFF) (db) (c) -6 GHz (c) ON-6 GHz (d) -6 GHz (d) OFF-6 GHz 그림 3. FSS Fig. 3. Induced current distribution of designed reconfigurable FSS., (0 30 )., 10 GHz, 6 GHz, 3(a) (d)., 3(a), (10 GHz). 3(d) Π, (6 GHz). 3(b), (c), (10 GHz, 6 GHz),., (10 GHz) L 1,, (6 GHz) L 5., L 5 2. L mm OFF 7.24 GHz 6.12 GHz, L 5. L 5, ( GHz). FSS, 3., FSS,,.,, (TE, TM) (0 30 ). Beam Lead MACOM MA4-795

6 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 9, Sep 표 3. 재구성 FSS 구조에 대한 제안된 구조와 선행 연구 의 성능 비교 Table 3. Comparisons between the proposed structure and previous studies for reconfigurable-fss. Ref. Techniques [15] PIN diode [16] Varactor [18] PIN diode Bias circuit config. 2-ind. bias Bias grid with inductive pad 2-ind. bias [19] PIN diode 1-parallel bias [20] PIN diode 1-series bias with 3-L, 1-R [21] PIN diode 1-parallel bias [22] PIN diode 1-series bais with 3-L Operating freq. (GHz) Stability Pol.1) Angle2) TE only TE, TM TE only - TE only - TE only - TE only - This PIN diode 1-parallel bias paper 1) Polarization, 2) Angle of incident wave. 제작된 재구성 (a) FSS (a) Fabricated reconfigurable FSS TE, TM 0 30 TE only 0 45 과 Taconic RF-35를 사용하여 제작하였다. 도파관 내경 크기 mm mm에 맞추어 FSS의 단위구조 를 1 3 배열하였으며, 실험의 편의성을 위해 WR-90 사이 즈 41.4 mm 41.4 mm에 맞추어 시료를 제작하였다. 제작 된 재구성 FSS 구조의 외형을 그림 4(a)에 나타내었으며, X-대역( GHz)에서 사용가능한 구형 도파관 WR90를 사용하여 투과 손실을 측정하였다. 그림 4(b)와 같 이, 구형 도파관 WR-90 중심에 제작한 FSS 시료를 위치 시키고, 전원을 인가하여 다이오드 상태에 따라 주파수 응답을 관찰하였으며, 수직 입사하는 입사파에 대하여 측 정된 투과 계수 결과를 그림 5에 나타내었다. 측정 환경을 고려하여 주파수 가변 폭이 넓어짐에 따 라 단락, 개방 상태에서의 투과 주파수 격리도가 커지는 경향을 이용, 주파수 격리도에 초점을 맞추어 실험하였 다. 측정결과와 계산결과의 비교를 위해 무한한 주기구조 를 가정한 Floquet 모드 해석이 아닌 도파관 모드 해석을 통해 얻은 결과와 측정 결과를 비교하였다. 측정 결과로부터, 핀 다이오드 단락 상태에서 동작 주 파수는 GHz에서 1.54 db의 투과 손실을(계산값: PBL 측정 환경 (b) (b) Measurement setup 제작된 재구성 구조와 측정 환경 그림 4. FSS Fig. 4. Fabricated reconfigurable FSS and measurement environment. 투과 손실 측정 결과 그림 5. Fig. 5. Measured transmission characteristic using waveguide.

7 X-Band GHz), 3 db 380 MHz ( : 725 MHz), (0 V) 14.5 db db.. (5 25 db), ( 1 10 db), 10 db, 1.54 db [14] [16].. 결론 X- FSS,. Four-legged loaded, X-,,.,, 9.98 GHz FSS, WR GHz db,.. References [1] B. A. Munk, Frequency Selective Surface: Theory and Design, John Wiley & Sons, [2] C. G. M. van't Klooster, A. Pacheco, C. Montesano, J. A. Encinar, and A. Culebras, "Reflect-array sub-reflector in X-Ka band antenna", 2013 IEEE International Symposium on Antennas and Propagation (ISAP), vol. 2, pp , [3] T. Kan, K. Matsumoto, and I. Shimoyama, "Nano-pillar structure for sensitivity enhancement of SPR sensor", IEEE International Conference on Solid-State Sensors, Actuators and Microsystems, pp , [4] F. Costa, A. Monorchio, "A frequency selective radome with wideband absorbing properties", IEEE Transaction on Antennas and Propagation, vol. 60, no. 6, pp , [5] L. Sun, H. Cheng, Y. Zhou, and J. Wang, "Broadband metamaterial absorber based on coupling resistive frequency selective surface", Optics Express, vol. 20, no. 4, pp , [6] E. Arnaud, A. Kanso, T. Monediere, D. Passerieux, M. Thevenot, E. Beaudrouet, C. Dossou-Yovo, and R. Noguera, "Inkjet printing of frequency selective surfaces on EBG antenna radome", 6th European Conference on Antennas Propagation(EuCAP), pp , [7] H. G. Sung, K. W. Sowerby, and A. G. Williamson, "Modeling a low-cost frequency selective wall for wireless-friendly indoor environments", IEEE Antennas and Wireless Propagation Letters, vol. 5, no. 1, pp , [8] C. Sudhendra, A. R. Madhu, A. C. R. Pillai, R. Kark, and T. S. Rukmini, "A novel ultra wide band radar Absorber based on hexagonal resistive patch FSS", In Applied Electromagnetics Conference (AEMC), pp. 1-2, [9] S. V. Hum, J. Perruisseau-Carrier, "Reconfigurable reflectarrays and array lenses for dynamic antenna beam control: A review", IEEE Trans. Antennas & Propagation, vol. 62, no. 1, pp , [10] J. P. Turpin, J. A. Bossard, K. L. Morgan, D. H. Werner, and P. L. Werner, "Reconfigurable and tunable metamaterials: a review of the theory and applications", 797

8 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 9, Sep International Journal of Antennas and Propagation, vol. 2014, [11] K. ElMahgoub, F. Yang, and A. Z. Elsherbeni, "Design of novel reconfigurable frequency selective surfaces with two control techniques", Progress in Electromagnetics Research C, vol. 35, pp , [12] K. Fuchi, J. Tang, B. Crowgey, A. R. Diaz, E. J. Rothwell, and R. O. Ouedraogo, "Origami tunable frequency selective surfaces", IEEE Antennas and Wireless Propagation Letters, vol. 11, pp , [13] P. Yaghmaee, O. H. Karabey, B. Bates, C. Fumeaux, and R. Jakoby, "Electrically tuned microwave devices using liquid crystal technology", International Journal of Antennas and Propagation, vol. 2013, [14] M. Safari, S. Cyrus, and S. Lotfollah, "X-band tunable frequency selective surface using MEMS capacitive loads", IEEE Transactions on Antennas and Propagation, vol. 63, no. 3, pp , [15] B. Sanz-Izquierdo, E. A. Parker, and J. C. Batchelor, "Dual-band tunable screen using complementary split ring resonators", IEEE Trans. Antennas & Propagation, vol. 58, no. 11, pp , [16] F. Bayatpur, S. Kamal, "Design and analysis of a tunable miniaturized-element frequency-selective surface without bias network", IEEE Transactions on Antennas and Propagation, vol. 58, no. 4, pp , [17] M. Niroo-Jazi, Mahmoud, and T. A. Denidni, "Reconfigurable dual-band frequency selective surfaces using a new hybrid element", 2011 IEEE International Symposium on Antennas and Propagation (APSURSI), pp , [18] M. M. Masud, B. Ijaz, A. Iftikhar, M. N. Rafiq, and B. D. Braaten, "A reconfigurable dual-band metasurface for EMI shielding of specific electromagnetic wave components", 2013 IEEE International Syposium on Electromagnetic Compatibility(EMC), pp , [19] K. Qi, Y. Xiaofeng, and W. Yongfeng, "A tunable microwave absorber based on active frequency selective surface", Progress in Electromagnetics Research Symposium Proceedings, pp , [20] P. Kong, et al., "Switchable frequency selective surfaces absorber/reflector for wideband applications", Journal of Electromagnetic Waves and Applications, vol. 29, no. 11, pp , [21] L. Jialin, et al., "Design of a tunable low-frequency and broadband radar absorber based on active frequency selective surface", IEEE Antennas and Wireless Propagation Letters, vol. 15, pp , [22] H. Wang, et al., "Broadband tunability of polarizationinsensitive absorber based on frequency selective surface", Scientific Reports, vol. 6, : ( ) : ( ) : [ 주관심분야 ], : ( ) : ( ) : ( ) : KT : [ 주관심분야 ],, EMI/EMC 798

9 격리도가 향상된 X-Band 재구성 주파수 선택 표면구조 설계 전흥 재 년 1994년: Northwestern University 기계공학과 (공학박사) 1994년 1997년: Northwestern Uniersity 기 계공학과 (Post Doc.) 1997년 현재: 연세대학교 기계공학과 교 수 [주 관심분야] 레이돔 설계, FSS 구조 해 1990 석 김윤 재 홍익 표 년 월 연세대학교 전자공학과 (공학 사 년 월 연세대학교 전자공학과 (공학 석사 년 월 연세대학교 전기컴퓨터공학 과 공학박사 년 월 년 2월: 삼성전자 무선 사업부 책임연구원 2006년 2월 2007년 2월: Texas A & M University, Visiting Scholar 2012년 2월 2013년 2월: Syracuse University, Visiting Scholar 2003년 3월 현재: 공주대학교 정보통신공학부 교수 [주 관심분야] 전자기 수치 해석, 주파수 선택구조, EMI/EMC : ) : ) : ( ) 년 8월: 서울대학교 기계항공공학부 공학박사) 년 9월 2012년 3월: 서울대학교 정 밀기계설계공동연구소 선임연구원 2012년 4월 현재: 국방과학연구소 제7기 술연구본부 3부 [주 관심분야] 복합재 구조 설계/해석, 주 2011 ( 2011 파수 선택구조 799

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 10, Oct ,,. 0.5 %.., cm mm FR4 (ε r =4.4)

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 10, Oct ,,. 0.5 %.., cm mm FR4 (ε r =4.4) THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Oct.; 29(10), 799 804. http://dx.doi.org/10.5515/kjkiees.2018.29.10.799 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Method

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jun.; 27(6),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jun.; 27(6), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Jun.; 27(6), 495 503. http://dx.doi.org/10.5515/kjkiees.2016.27.6.495 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Design

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jul.; 30(7),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jul.; 30(7), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2019 Jul.; 30(7), 566 572. http://dx.doi.org/10.5515/kjkiees.2019.30.7.566 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Design

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 10, Oct , EBG. [4],[5],. double split ring resonator (D

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 10, Oct , EBG. [4],[5],. double split ring resonator (D THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Oct.; 29(10), 739 744. http://dx.doi.org/10.5515/kjkiees.2018.29.10.739 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) DSRR

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jan.; 26(1),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jan.; 26(1), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Jan.; 26(1), 113118. http://dx.doi.org/10.5515/kjkiees.2015.26.1.113 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) A Retro-Directive

More information

04 김영규.hwp

04 김영규.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 214 Nov.; 25(11), 1121 1127. http://dx.doi.org/1.5515/kjkiees.214.25.11.1121 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Planar

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jun.; 27(6),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jun.; 27(6), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Jun.; 276), 504511. http://dx.doi.org/10.5515/kjkiees.2016.27.6.504 ISSN 1226-3133 Print)ISSN 2288-226X Online) Near-Field

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 30(9),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 30(9), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2019 Sep.; 30(9), 712 717. http://dx.doi.org/10.5515/kjkiees.2019.30.9.712 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) MOS

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 29(2), IS

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 29(2), IS THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Feb.; 29(2), 93 98. http://dx.doi.org/10.5515/kjkiees.2018.29.2.93 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) UHF-HF

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 26(11),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 26(11), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Nov.; 26(11), 985991. http://dx.doi.org/10.5515/kjkiees.2015.26.11.985 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Analysis

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 25(3),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 25(3), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Mar.; 25(3), 304310. http://dx.doi.org/10.5515/kjkiees.2014.25.3.304 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Analysis

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 28(3),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 28(3), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 Mar.; 28(3), 163 169. http://dx.doi.org/10.5515/kjkiees.2017.28.3.163 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) PCB

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 26(10),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 26(10), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Sep.; 26(10), 876 884. http://dx.doi.org/10.5515/kjkiees.2015.26.10.876 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Design

More information

05 목차(페이지 1,2).hwp

05 목차(페이지 1,2).hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Oct.; 25(10), 10771086. http://dx.doi.org/10.5515/kjkiees.2014.25.10.1077 ISSN 1226-3133 (Print)ISSN 2288-226X (Online)

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 30(3),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 30(3), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2019 Mar.; 30(3), 223 228. http://dx.doi.org/10.5515/kjkiees.2019.30.3.223 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Analysis

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jul.; 27(7),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jul.; 27(7), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Jul.; 27(7), 625634. http://dx.doi.org/10.5515/kjkiees.2016.27.7.625 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Near-Field

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr (planar resonator) (radiator) [2] [4].., (cond

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr (planar resonator) (radiator) [2] [4].., (cond THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 Apr.; 28(4), 279 285. http://dx.doi.org/10.5515/kjkiees.2017.28.4.279 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) A Study

More information

04 최진규.hwp

04 최진규.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Aug.; 26(8), 710717. http://dx.doi.org/10.5515/kjkiees.2015.26.8.710 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) RF ESPAR

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 27(12),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 27(12), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Dec.; 27(12), 1036 1043. http://dx.doi.org/10.5515/kjkiees.2016.27.12.1036 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

, V2N(Vehicle to Nomadic Device) [3]., [4],[5]., V2V(Vehicle to Vehicle) V2I (Vehicle to Infrastructure) IEEE 82.11p WAVE (Wireless Access in Vehicula

, V2N(Vehicle to Nomadic Device) [3]., [4],[5]., V2V(Vehicle to Vehicle) V2I (Vehicle to Infrastructure) IEEE 82.11p WAVE (Wireless Access in Vehicula THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 215 Jul.; 26(7), 66 612. http://dx.doi.org/1.5515/kjkiees.215.26.7.66 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Dual-Band

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 26(10),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 26(10), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Sep.; 26(10), 907 913. http://dx.doi.org/10.5515/kjkiees.2015.26.10.907 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Prediction

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jan.; 27(1), ISSN

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jan.; 27(1), ISSN THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 216 Jan.; 27(1), 17. http://dx.doi.org/1.5515/kjkiees.216.27.1.1 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Switch 1.5 GHz

More information

<313920C0CCB1E2BFF82E687770>

<313920C0CCB1E2BFF82E687770> 韓 國 電 磁 波 學 會 論 文 誌 第 19 卷 第 8 號 2008 年 8 月 論 文 2008-19-8-19 K 대역 브릭형 능동 송수신 모듈의 설계 및 제작 A Design and Fabrication of the Brick Transmit/Receive Module for K Band 이 기 원 문 주 영 윤 상 원 Ki-Won Lee Ju-Young Moon

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jul.; 27(7),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jul.; 27(7), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 16 Jul.; 27(7), 64662. http://dx.doi.org/./kjkiees.16.27.7.646 ISSN 1226-3133 (Print)ISSN 2288-226 (Online) 2D Microwave Image

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Aug.; 27(8),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Aug.; 27(8), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Aug.; 27(8), 709 716. http://dx.doi.org/10.5515/kjkiees.2016.27.8.709 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Development

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 26(12),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 26(12), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Dec.; 26(12), 1044 1049. http://dx.doi.org/10.5515/kjkiees.2015.26.12.1044 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 3, Mar (NFC: non-foster Circuit).,. (non-foster match

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 3, Mar (NFC: non-foster Circuit).,. (non-foster match THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Mar.; 26(3), 283 291. http://dx.doi.org/10.5515/kjkiees.2015.26.3.283 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Negative

More information

24 GHz 1Tx 2Rx FMCW ADAS(Advanced Driver Assistance System).,,,. 24 GHz,, [1] [4]. 65-nm CMOS FMCW 24 GHz FMCW.. 송수신기설계 1 1Tx 2Rx FMCW (Local Oscillat

24 GHz 1Tx 2Rx FMCW ADAS(Advanced Driver Assistance System).,,,. 24 GHz,, [1] [4]. 65-nm CMOS FMCW 24 GHz FMCW.. 송수신기설계 1 1Tx 2Rx FMCW (Local Oscillat THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Oct.; 29(10), 758 765. http://dx.doi.org/10.5515/kjkiees.2018.29.10.758 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) 24

More information

04 박영주.hwp

04 박영주.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 216 Mar.; 27(3), 253 26. http://dx.doi.org/1.5515/kjkiees.216.27.3.253 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) LPDA Design

More information

PCB ACF 77 GHz. X,,.,. (dip brazing), (diffusion bonding), (electroforming),, [1],[2].. PCB(Printed Circuit Board), (anisotropic conductive film: ACF)

PCB ACF 77 GHz. X,,.,. (dip brazing), (diffusion bonding), (electroforming),, [1],[2].. PCB(Printed Circuit Board), (anisotropic conductive film: ACF) THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Oct.; 29(10), 752 757. http://dx.doi.org/10.5515/kjkiees.2018.29.10.752 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) PCB

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 26(3),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 26(3), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 215 Mar.; 26(3), 248 256. http://dx.doi.org/1.5515/kjkiees.215.26.3.248 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Metal

More information

03 장태헌.hwp

03 장태헌.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2013 Aug.; 24(8), 772 780. http://dx.doi.org/10.5515/kjkiees.2013.24.8.772 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) HEMP

More information

<35335FBCDBC7D1C1A42DB8E2B8AEBDBAC5CDC0C720C0FCB1E2C0FB20C6AFBCBA20BAD0BCAE2E687770>

<35335FBCDBC7D1C1A42DB8E2B8AEBDBAC5CDC0C720C0FCB1E2C0FB20C6AFBCBA20BAD0BCAE2E687770> Journal of the Korea Academia-Industrial cooperation Society Vol. 15, No. 2 pp. 1051-1058, 2014 http://dx.doi.org/10.5762/kais.2014.15.2.1051 멤리스터의 전기적 특성 분석을 위한 PSPICE 회로 해석 김부강 1, 박호종 2, 박용수 3, 송한정 1*

More information

. 서론,, [1]., PLL.,., SiGe, CMOS SiGe CMOS [2],[3].,,. CMOS,.. 동적주파수분할기동작조건분석 3, Miller injection-locked, static. injection-locked static [4]., 1/n 그림

. 서론,, [1]., PLL.,., SiGe, CMOS SiGe CMOS [2],[3].,,. CMOS,.. 동적주파수분할기동작조건분석 3, Miller injection-locked, static. injection-locked static [4]., 1/n 그림 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Feb.; 27(2), 170175. http://dx.doi.org/10.5515/kjkiees.2016.27.2.170 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Analysis

More information

09È«¼®¿µ 5~152s

09È«¼®¿µ5~152s Korean Journal of Remote Sensing, Vol.23, No.2, 2007, pp.45~52 Measurement of Backscattering Coefficients of Rice Canopy Using a Ground Polarimetric Scatterometer System Suk-Young Hong*, Jin-Young Hong**,

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 6, Jun Rate). STAP(Space-Time Adaptive Processing)., -

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 6, Jun Rate). STAP(Space-Time Adaptive Processing)., - THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Jun.; 29(6), 457463. http://dx.doi.org/10.5515/kjkiees.2018.29.6.457 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Sigma-Delta

More information

11 함범철.hwp

11 함범철.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2012 Aug.; 23(8), 958 966. http://dx.doi.org/10.5515/kjkiees.2012.23.8.958 ISSN 1226-3133 (Print) LTCC Bluetooth/WiFi A Bluetooth/WiFi

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 8, Aug [3]. ±90,.,,,, 5,,., 0.01, 0.016, 99 %... 선형간섭

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 8, Aug [3]. ±90,.,,,, 5,,., 0.01, 0.016, 99 %... 선형간섭 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Aug.; 27(8), 693700. http://dx.doi.org/10.5515/kjkiees.2016.27.8.693 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Design

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 28(5),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 28(5), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 May; 285, 382 390. http://dx.doi.org/10.5515/kjkiees.2017.28.5.382 ISSN 1226-3133 Print ISSN 2288-226X Online Human Effect

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 9, Sep GHz 10 W Doherty. [4]. Doherty. Doherty, C

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 9, Sep GHz 10 W Doherty. [4]. Doherty. Doherty, C THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Sep.; 26(9), 783 789. http://dx.doi.org/10.5515/kjkiees.2015.26.9.783 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) GaN-HEMT

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Oct.; 27(10),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Oct.; 27(10), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Oct.; 27(10), 926 934. http://dx.doi.org/10.5515/kjkiees.2016.27.10.926 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Multi-Function

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 28(2),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 28(2), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 Feb.; 28(2), 129138. http://dx.doi.org/10.5515/kjkiees.2017.28.2.129 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) PT- Doppler

More information

RRH Class-J 5G [2].,. LTE 3G [3]. RRH, W-CDMA(Wideband Code Division Multiple Access), 3G, LTE. RRH RF, RF. 1 RRH, CPRI(Common Public Radio Interface)

RRH Class-J 5G [2].,. LTE 3G [3]. RRH, W-CDMA(Wideband Code Division Multiple Access), 3G, LTE. RRH RF, RF. 1 RRH, CPRI(Common Public Radio Interface) THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Mar.; 26(3), 276 282. http://dx.doi.org/10.5515/kjkiees.2015.26.3.276 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) RRH

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 6, Jun , [6]. E- [9],[10]. E- 3D EM(electromagnetic),,

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 29, no. 6, Jun , [6]. E- [9],[10]. E- 3D EM(electromagnetic),, THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Jun.; 29(6), 401 406. http://dx.doi.org/10.5515/kjkiees.2018.29.6.401 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) E-

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 21 卷第 12 號 2010 年 12 月論文 2010-21-12-09 Dual-Band Compact Broad Band-Pass Filter with Parallel Coupled Line 최영구 윤기철 이정훈 홍태의 Young-Gu ChoiBhanu Shrestha*Ki-Cheol Yn**Jeong-Hun Lee** Tae-Ui Hong***

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Oct.; 27(10),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Oct.; 27(10), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Oct.; 27(10), 935 940. http://dx.doi.org/10.5515/kjkiees.2016.27.10.935 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Directed

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jan.; 26(1), IS

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jan.; 26(1), IS THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Jan.; 26(1), 54 62. http://dx.doi.org/10.5515/kjkiees.2015.26.1.54 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Design

More information

09권오설_ok.hwp

09권오설_ok.hwp (JBE Vol. 19, No. 5, September 2014) (Regular Paper) 19 5, 2014 9 (JBE Vol. 19, No. 5, September 2014) http://dx.doi.org/10.5909/jbe.2014.19.5.656 ISSN 2287-9137 (Online) ISSN 1226-7953 (Print) a) Reduction

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 27(9),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Sep.; 27(9), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Sep.; 27(9), 775 782. http://dx.doi.org/10.5515/kjkiees.2016.27.9.775 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) GPS

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 9, Sep [1]. RFID.,,,,,,, /,,, (,,,, ) [2] [4].., ( 99

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 9, Sep [1]. RFID.,,,,,,, /,,, (,,,, ) [2] [4].., ( 99 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 Sep.; 28(9), 679 684. http://dx.doi.org/10.5515/kjkiees.2017.28.9.679 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) UHF

More information

(JBE Vol. 21, No. 1, January 2016) (Regular Paper) 21 1, (JBE Vol. 21, No. 1, January 2016) ISSN 228

(JBE Vol. 21, No. 1, January 2016) (Regular Paper) 21 1, (JBE Vol. 21, No. 1, January 2016)   ISSN 228 (JBE Vol. 1, No. 1, January 016) (Regular Paper) 1 1, 016 1 (JBE Vol. 1, No. 1, January 016) http://dx.doi.org/10.5909/jbe.016.1.1.60 ISSN 87-9137 (Online) ISSN 16-7953 (Print) a), a) An Efficient Method

More information

韓國電磁波學會論文誌第 21 卷第 9 號 2010 年 9 月. PCS(Personal Communication Service), WCDMA(Wideband Code Division Multiple Access), WiBro(Wireless Broadband),, (dua

韓國電磁波學會論文誌第 21 卷第 9 號 2010 年 9 月. PCS(Personal Communication Service), WCDMA(Wideband Code Division Multiple Access), WiBro(Wireless Broadband),, (dua 韓國電磁波學會論文誌第 21 卷第 9 號 2010 年 9 月論文 2010-21-9-13 Design of Broadband Polarization Diversity Antenna for Mobile Base Stations 서인종 조인호 이천희 정진우 이현진 임영석 Injong Seo Inho Cho Cheonhee Lee Jinwoo Jung* Hyeonjin

More information

박선영무선충전-내지

박선영무선충전-내지 2013 Wireless Charge and NFC Technology Trend and Market Analysis 05 13 19 29 35 45 55 63 67 06 07 08 09 10 11 14 15 16 17 20 21 22 23 24 25 26 27 28 29 30 31 32 33 36 37 38 39 40

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 25(11),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 25(11), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Nov.; 25(11), 11281134. http://dx.doi.org/10.5515/kjkiees.2014.25.11.1128 ISSN 1226-3133 (Print)ISSN 2288-226X (Online)

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 26(5),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 26(5), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 May; 26(5), 483 491. http://dx.doi.org/10.5515/kjkiees.2015.26.5.483 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) TACAN

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Aug.; 30(8),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Aug.; 30(8), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2019 Aug.; 30(8), 629639. http://dx.doi.org/10.5515/kjkiees.2019.30.8.629 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Analysis

More information

05 목차(페이지 1,2).hwp

05 목차(페이지 1,2).hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Oct.; 25(10), 1069 1076. http://dx.doi.org/10.5515/kjkiees.2014.25.10.1069 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

인문사회과학기술융합학회

인문사회과학기술융합학회 Vol.5, No.5, October (2015), pp.471-479 http://dx.doi.org/10.14257/ajmahs.2015.10.50 스마트온실을 위한 가상 외부기상측정시스템 개발 한새론 1), 이재수 2), 홍영기 3), 김국환 4), 김성기 5), 김상철 6) Development of Virtual Ambient Weather Measurement

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 12, Dec ,. VHF,, [1],[2].,.,,. [3] [9]., VHF.,. VHF.. 안

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 12, Dec ,. VHF,, [1],[2].,.,,. [3] [9]., VHF.,. VHF.. 안 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Dec.; 27(12), 1027 1035. http://dx.doi.org/10.5515/kjkiees.2016.27.12.1027 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 26(12),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 26(12), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Dec.; 26(12), 1100 1107. http://dx.doi.org/10.5515/kjkiees.2015.26.12.1100 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

PCB PCB. PCB P/G de-cap [2],[3]., de-cap ESL(Equivalent Series Inductance) [3],. P/G [4], P/G. de-cap P/G, PCB.. 단일비아를이용한 P/G 면공진상쇄 2-1 P/G 면공진현상 PCB

PCB PCB. PCB P/G de-cap [2],[3]., de-cap ESL(Equivalent Series Inductance) [3],. P/G [4], P/G. de-cap P/G, PCB.. 단일비아를이용한 P/G 면공진상쇄 2-1 P/G 면공진현상 PCB 韓國電磁波學會論文誌第 20 卷第 12 號 2009 年 12 月論文 2009-20-12-05 PCB Improved Characteristic of Radiated Emission of a PCB b Using the Via-Hole Position 김리진 이재현 Li-Jin Kim Jae-Hun Lee 요약 4 PCB(Printed Circuit Boards)

More information

韓國電磁波學會論文誌第 21 卷第 11 號 2010 年 11 月 (a) (a) Frequency response (b) (b) Corresponding pole-zero diagram 그림 1. Fig. 1. Characteristic of multi-band filte

韓國電磁波學會論文誌第 21 卷第 11 號 2010 年 11 月 (a) (a) Frequency response (b) (b) Corresponding pole-zero diagram 그림 1. Fig. 1. Characteristic of multi-band filte 韓國電磁波學會論文誌第 21 卷第 11 號 2010 年 11 月論文 2010-21-11-09 A Filter Synthesis Method for Multi-Band Filter Design 이혜선 이자현 임영석 Hyesun LeeJahyeon LeeYeongseog Lim 요약 LC.,,., LC. LC GSM(880960 MHz), ISM(2,4002,500

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 26(5),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 26(5), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 May; 26(5), 435444. http://dx.doi.org/10.5515/kjkiees.2015.26.5.435 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) 77 GHz

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Apr.; 26(4),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Apr.; 26(4), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Apr.; 26(4), 357 364. http://dx.doi.org/10.5515/kjkiees.2015.26.4.357 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) 6 MIMO

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jun.; 29(6),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Jun.; 29(6), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Jun.; 29(6), 415423. http://dx.doi.org/10.5515/kjkiees.2018.29.6.415 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Analysis

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 김영민 *, 정용선 *, 노재우 *, 장리검 *, 안병철 ** 요약 Abstract This paper presents a broadband orthomode transducer (OMT) operating at 7-87GHz. The proposed OMT consists of a T-shaped bifurcation structure, a polarization

More information

09 남형기.hwp

09 남형기.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2013 Sep.; 24(9), 936 943. http://dx.doi.org/10.5515/kjkiees.2013.24.9.936 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) 77

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 한국소음진동공학회 2015추계학술대회논문집년 Study of Noise Pattern and Psycho-acoustics Characteristic of Household Refrigerator * * ** ** Kyung-Soo Kong, Dae-Sik Shin, Weui-Bong Jeong, Tae-Hoon Kim and Se-Jin Ahn Key Words

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 29(5),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 29(5), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 May; 29(5), 375382. http://dx.doi.org/10.5515/kjkiees.2018.29.5.375 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Analysis

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 26(11),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 26(11), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Nov.; 26(11), 978 984. http://dx.doi.org/10.5515/kjkiees.2015.26.11.978 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Transceiver

More information

13-2013-090(수정).hwp

13-2013-090(수정).hwp 한국ITS학회논문지 제13권, 제1호 (2014년2월) pp.127~134 http://dx.doi.org/10.12815/kits.2014.13.1.127 Taper 슬롯구조배열 안테나 구현 On the implementation of Taper slot array antenna structure 이 천 희* 김 호 준** 곽 경 섭*** (Cheon-Hee

More information

08 조영아.hwp

08 조영아.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Jan.; 26(1), 6370. http://dx.doi.org/10.5515/kjkiees.2015.26.1.63 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) 900 MHz

More information

<4D F736F F F696E74202D20454D49A3AF454D43BAEDB7CEBCC52EBBEABEF7BFEBC6F7C7D428BBEFC8ADC0FCC0DA >

<4D F736F F F696E74202D20454D49A3AF454D43BAEDB7CEBCC52EBBEABEF7BFEBC6F7C7D428BBEFC8ADC0FCC0DA > Materials Material Grades : PL Series Applicaton : Power transformer and Inductor Grades μi Freq. (MHz) Pcv 1) (Kw/ m3 ) Bs 2) (mt) Materials Characteristics PL-7 2,400 ~ 0.2 410 390 Mn-Zn Low loss PL-9

More information

(JKONI 16(6): , Dec. 2012) 간결하고효과적인 X-band 위성통신용계단형셉텀편파기의설계방법 김지흥 *, 이재욱 *, 이택경 *, 조춘식 * Jee-Heung Kim *, Jae-Wook Lee *, Taek-Kyu

(JKONI 16(6): , Dec. 2012) 간결하고효과적인 X-band 위성통신용계단형셉텀편파기의설계방법 김지흥 *, 이재욱 *, 이택경 *, 조춘식 * Jee-Heung Kim *, Jae-Wook Lee *, Taek-Kyu 16 6 2012 12 (JKONI 16(6): 893-899, Dec. 2012) 간결하고효과적인 X-band 위성통신용계단형셉텀편파기의설계방법 김지흥 *, 이재욱 *, 이택경 *, 조춘식 * Jee-Heung Kim *, Jae-Wook Lee *, Taek-Kyung Lee * and Choon-Sik Cho * 요약 X-band.. EM (β).,.

More information

. /. / 2-way / Corporate, 2-way / /,. Corporate / 1/4, 6 18 GHz 3, Corporate. (a) Corporate (a) Corporate power combining structure (b) (b) Spatial po

. /. / 2-way / Corporate, 2-way / /,. Corporate / 1/4, 6 18 GHz 3, Corporate. (a) Corporate (a) Corporate power combining structure (b) (b) Spatial po THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 Apr.; 28(4), 286 297. http://dx.doi.org/10.5515/kjkiees.2017.28.4.286 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Development

More information

I

I I II III (C B ) (C L ) (HL) Min c ij x ij f i y i i H j H i H s.t. y i 1, k K, i W k C B C L p (HL) x ij y i, i H, k K i, j W k x ij y i {0,1}, i, j H. K W k k H K i i f i i d ij i j r ij i j c ij r ij

More information

서강대학교 기초과학연구소대학중점연구소 심포지엄기초과학연구소

서강대학교 기초과학연구소대학중점연구소 심포지엄기초과학연구소 2012 년도기초과학연구소 대학중점연구소심포지엄 마이크로파센서를이용한 혈당측정연구 일시 : 2012 년 3 월 20 일 ( 화 ) 14:00~17:30 장소 : 서강대학교과학관 1010 호 주최 : 서강대학교기초과학연구소 Contents Program of Symposium 2 Non-invasive in vitro sensing of D-glucose in

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 29(3),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 29(3), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Mar.; 29(3), 233240. http://dx.doi.org/10.5515/kjkiees.2018.29.3.233 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) RCS Comparative

More information

LCD [2].,. (TEMPEST).,,.... CRT(Cathode Ray Tube),, [3]. LCD(Liquid Crystal Display) [4]. LCD [5].,, VGA(Video Graphics Array) DVI (Digital Visu

LCD [2].,. (TEMPEST).,,.... CRT(Cathode Ray Tube),, [3]. LCD(Liquid Crystal Display) [4]. LCD [5].,, VGA(Video Graphics Array) DVI (Digital Visu THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Sep.; 27(9), 844 853. http://dx.doi.org/10.5515/kjkiees.2016.27.9.844 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) LCD

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 9, Sep [1],[2].,.,, [3],[4]., 4 MI- MO(Multiple Input

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 9, Sep [1],[2].,.,, [3],[4]., 4 MI- MO(Multiple Input THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Sep.; 26(9), 769 776. http://dx.doi.org/10.5515/kjkiees.2015.26.9.769 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) MIMO

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Apr.; 29(4),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Apr.; 29(4), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2018 Apr.; 29(4), 247 255. http://dx.doi.org/10.5515/kjkiees.2018.29.4.247 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Complementary

More information

,.. 2, , 3.. 본론 2-1 가상잡음신호원생성원리, [8].,. 1.,,. 4 km (13.3 μs).,. 2 (PN code: Pseudo Noise co- 그림 2. Fig. 2. Pseudo noise code. de). (LFSR: Line

,.. 2, , 3.. 본론 2-1 가상잡음신호원생성원리, [8].,. 1.,,. 4 km (13.3 μs).,. 2 (PN code: Pseudo Noise co- 그림 2. Fig. 2. Pseudo noise code. de). (LFSR: Line THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Jun; 26(6), 546 554. http://dx.doi.org/10.5515/kjkiees.2015.26.6.546 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) Proof-of-Concept

More information

08김현휘_ok.hwp

08김현휘_ok.hwp (Regular Paper) 21 3, 2016 5 (JBE Vol. 21, No. 3, May 2016) http://dx.doi.org/10.5909/jbe.2016.21.3.369 ISSN 2287-9137 (Online) ISSN 1226-7953 (Print) a), a) An Audio Coding Technique Employing the Inter-channel

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 12, Dec 또한, 최근 위성통신은 점차 많은 데이터량과 주파수 활용문제로 인하여 Ka 인 초고

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 12, Dec 또한, 최근 위성통신은 점차 많은 데이터량과 주파수 활용문제로 인하여 Ka 인 초고 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Dec.; 26(12, 1083 1090. http://dx.doi.org/10.5515/kjkiees.2015.26.12.1083 ISSN 1226-3133 (Print ISSN 2288-226X (Online GaN

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 29(2), IS

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 29(2), IS THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 218 Feb.; 29(2), 7782. http://dx.doi.org/1.5515/kjkiees.218.29.2.77 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Transmission

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 초고주파대역도파관부품측정기술 Measurement Techniques for Microwave Waveguide Components 저자 (Authors) 유상길, 최순우, 김동현, 김대오, 안병철 Sang-Gil Yu, Swoon-Woo Choi, Dong-Hyun Kim, Dae-Oh, Kim, Bierng-Chearl Ahn 출처 (Source) 한국정보기술학회논문지

More information

저작자표시 - 비영리 - 변경금지 2.0 대한민국 이용자는아래의조건을따르는경우에한하여자유롭게 이저작물을복제, 배포, 전송, 전시, 공연및방송할수있습니다. 다음과같은조건을따라야합니다 : 저작자표시. 귀하는원저작자를표시하여야합니다. 비영리. 귀하는이저작물을영리목적으로이용할

저작자표시 - 비영리 - 변경금지 2.0 대한민국 이용자는아래의조건을따르는경우에한하여자유롭게 이저작물을복제, 배포, 전송, 전시, 공연및방송할수있습니다. 다음과같은조건을따라야합니다 : 저작자표시. 귀하는원저작자를표시하여야합니다. 비영리. 귀하는이저작물을영리목적으로이용할 저작자표시 - 비영리 - 변경금지 2.0 대한민국 이용자는아래의조건을따르는경우에한하여자유롭게 이저작물을복제, 배포, 전송, 전시, 공연및방송할수있습니다. 다음과같은조건을따라야합니다 : 저작자표시. 귀하는원저작자를표시하여야합니다. 비영리. 귀하는이저작물을영리목적으로이용할수없습니다. 변경금지. 귀하는이저작물을개작, 변형또는가공할수없습니다. 귀하는, 이저작물의재이용이나배포의경우,

More information

04_이근원_21~27.hwp

04_이근원_21~27.hwp 1) KIGAS Vol. 16, No. 5, pp 21~27, 2012 (Journal of the Korean Institute of Gas) http://dx.doi.org/10.7842/kigas.2012.16.5.21 실험실의 사례 분석에 관한 연구 이근원 이정석 한국산업안전보건공단 산업안전보건연구원 (2012년 9월 5일 투고, 2012년 10월 19일

More information

ÁÖÀçÀ² Ãâ·Â

ÁÖÀçÀ² Ãâ·Â Design of RFID Antennas for UHF Band ε ε This paper reports the characteristics and designs of RFID antennas operating at UHF band. Antennas for RFID application should work with high efficiency, a low

More information

<313630313032C6AFC1FD28B1C7C7F5C1DF292E687770>

<313630313032C6AFC1FD28B1C7C7F5C1DF292E687770> 양성자가속기연구센터 양성자가속기 개발 및 운영현황 DOI: 10.3938/PhiT.25.001 권혁중 김한성 Development and Operational Status of the Proton Linear Accelerator at the KOMAC Hyeok-Jung KWON and Han-Sung KIM A 100-MeV proton linear accelerator

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 12, Dec 그러나 eloran 송신 안테나는 매우 넓은 영역을 차지한 다. 예를 들어 미국에

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 27, no. 12, Dec 그러나 eloran 송신 안테나는 매우 넓은 영역을 차지한 다. 예를 들어 미국에 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 Dec.; 27(12), 1053 1058. http://dx.doi.org/10.5515/kjkiees.2016.27.12.1053 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 28(11),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 28(11), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2017 Nov.; 28(11), 837 842. http://dx.doi.org/10.5515/kjkiees.2017.28.11.837 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) 8PSK-TCM

More information

05 목차(페이지 1,2).hwp

05 목차(페이지 1,2).hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Sep.; 25(9), 944 951. http://dx.doi.org/10.5515/kjkiees.2014.25.9.944 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) A Study

More information

±è¼ºÃ¶ Ãâ·Â-1

±è¼ºÃ¶ Ãâ·Â-1 Localization Algorithms Using Wireless Communication Systems For efficient Localization Based Services, development of accurate localization algorithm has to be preceded. In this paper, research trend

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 26(3),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Mar.; 26(3), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 015 Mar.; 6(3), 68 75. tt://dx.doi.org/10.5515/kjkiees.015.6.3.68 ISSN 16-3133 (Print) ISSN 88-6X (Online) -CPS An Efficient

More information

07 최운성.hwp

07 최운성.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2013 Nov.; 24(11), 1081 1090. http://dx.doi.org/10.5515/kjkiees.2013.24.11.1081 ISSN 1226-3133 (Print) ISSN 2288-226X (Online)

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 박건수 *, 서태영 **, 김종욱 *** ". 요약 Abstract The induction melting furnace using electric generator has been introduced since 1920s, and it began to be widely applied to industrial applications due to increasing

More information

29 Ⅰ. 서론 물리학자들이 전파의 이론을 정립한 이후, 이를 기술적으로 실현함은 물론 적정 수준의 19세기 물리학자인 페러데이, 맥스웰, 헤르츠 등의 연구 결과로 인류는 전기장과 자기장의 변화 에 따른 전파를 만들어 낼 수 있게 되었고, 인류에 게 있어 없어서는 안되

29 Ⅰ. 서론 물리학자들이 전파의 이론을 정립한 이후, 이를 기술적으로 실현함은 물론 적정 수준의 19세기 물리학자인 페러데이, 맥스웰, 헤르츠 등의 연구 결과로 인류는 전기장과 자기장의 변화 에 따른 전파를 만들어 낼 수 있게 되었고, 인류에 게 있어 없어서는 안되 Journal of Communications & Radio Spectrum SPECIAL ISSUE 28 TREND REPORT 통신 및 비통신용 전파응용 기술 이슈 및 시사점 글 황태욱 경희대학교 연구교수 (031) 201-3254, twhwang@khu.ac.kr 주제어: 밀리미터파, 테라헤르츠파, 전파응용 기술, ISM 기기 전파자원의 부족문제에 대한

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 27(5),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE May; 27(5), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2016 May; 27(5), 454462. http://dx.doi.org/10.5515/kjkiees.2016.27.5.454 ISSN 1226-3133 (Print)ISSN 2288-226X (Online) Research

More information

°í¼®ÁÖ Ãâ·Â

°í¼®ÁÖ Ãâ·Â Performance Optimization of SCTP in Wireless Internet Environments The existing works on Stream Control Transmission Protocol (SCTP) was focused on the fixed network environment. However, the number of

More information