DBPIA-NURIMEDIA

Size: px
Start display at page:

Download "DBPIA-NURIMEDIA"

Transcription

1 韓國電磁波學會論文誌第 19 卷第 8 號 2008 年 8 月論文 A Dual-Sprial Line Loaded Monopole Antenna having a Vertical Groundplane for Quadband Applications 김병철 Truong Khang Nguyen 추호성 * 박익모 Byoungchul Kim Truong Khang Nguyen Hosung Choo* Ikmo Park 요약 본논문에서는수직접지면을가지는 4중대역용이중스파이럴라인로디드모노폴안테나를제안한다. 안테나의크기는 mm 3 이고, 접지면의크기는 mm 2 이다. 측정된안테나의대역폭은 VSWR 2를기준으로첫번째대역과두번째대역에서각각 11.7 % 와 24.8 % 이며, Cellular(0.824~0.894 GHz), PCS(1.750~ GHz), UMTS(1.920~2.170 GHz) 그리고 IMT-2000(1.885~2.200 GHz) 대역을동시에수용한다. 측정된안테나의최대이득은 Cellular, PCS, UMTS, IMT-2000 대역의중심주파수에서 dbi, 4.07 dbi, 2.72 dbi와 4.33 dbi이다. Abstract In this paper, we propose a dual-spiral line loaded monopole antenna having a vertical ground plane for quadband applications. The antenna occupies a volume of mm 3 with a mm 2 ground plane. The measured impedance bandwidths of the antenna based on VSWR 2 are approximately of 11.7 % and 24.8 % in the first and second frequency band, respectively. The operating frequency can simultaneously cover Cellular(0.824~0.894 GHz), PCS(1.750 ~1.870 MHz), UMTS(1.920~2.170 MHz), and IMT-2000(1.885~2.200 GHz) bands. The maximum gains of the antenna are dbi, 4.07 dbi, 2.72 dbi, and 4.33 dbi at the center frequencies of the Cellular, PCS, UMTS, and IMT-2000 bands, respectively. Good radiation patterns are experimentally obtained. Key words : Small Antennas, Multiband Antennas, Monopole Antenna, Electromagnetic Coupling, Dual Frequency Operation Ⅰ. 서론시장경제체제의급속한세계화로인하여모바일사용자들은다양한통신기능을가진소형이동통신기기를선호하고있다. 다양한기능의추가는많은양의정보의송수신을위한광대역특성이필수적이다. 또한, 소형단말기에대한소비자들의욕 구증대는무선통신에있어서소형안테나개발을촉진시켜왔다. 그러나다중대역안테나는일반적으로두개이상의복사소자가필요하고, 결국안테나의크기를증가시킨다. 따라서다중대역에서의동작을위하여효율의손실이없이광대역특성을유지하면서복사구조의최소화를위한많은연구가진행되고있다. 최근평면상에인쇄된안테나는경 아주대학교전자공학부 (School of Electrical and Computer Engineering, Ajou University) * 홍익대학교전자전기공학부 (School of Electronics and Electrical Engineering, Hongik University) 논문번호 : S 수정완료일자 : 2008 년 7 월 24 일 899

2 韓國電磁波學會論文誌第 19 卷第 8 號 2008 年 8 月 량화와비용절감등으로많은각광을받고있다 [1]~ [5]. 그러나이러한안테나들은좁은대역폭으로인하 여특정무선통신시스템영역에서다양한멀티미디어대역들을동시에수용하기에는적합하지않다. 뿐만아니라평면상에인쇄된안테나는이득과임피던스특성의균형을맞추어야하므로높은이득을위한안테나에는제약을받는다. 본논문에서는안테나가소형이면서도다중대역에서동작하기위한기법을적용시킨 4중대역안테나를제안하였다. 제안한안테나는스파이럴형태를이용하여안테나의전기적길이를증가시킴으로써안테나전체크기를감소시켰다 [6]. 또한, 매우근접하게위치하는두개의복사체를전자기적으로상호결합하여소형안테나의대역폭을크게개선하였고 [7], 접지면에 open-ended 슬릿을삽입하여안테나의 (a) 입체도 (a) 3-dimensional view 높은쪽공진대역에서의복사특성을향상시켰다 [8], [9]. 그리고휴대를용이하게하기위하여수직접지 면을사용하였고, 두스파이럴스트립라인을적층구조로배치하였다. 제안된안테나는이중대역에서동작하며각각의대역에서두개의공진을발생시키고, 모노폴안테나와유사한복사특성을가진다. 전산모의실험결과, 동작대역은 VSWR 2 기준으로 0.775~0.913 GHz와 1.744~2.247 GHz로각각 138 MHz와 503 MHz이며, 측정된동작대역은 0.798~ GHz와 1.748~2.245 GHz로각각 99 MHz와 497 MHz의대역폭을가진다. (b) 측면도 (b) Side view Ⅱ. 안테나구조그림 1에제안한안테나구조를나타내었다. 안테나는유사한형태를가진두개의스파이럴스트립라인으로구성되며, 비유전율이 3.38이고두께가 mm인 RO4003 기판에제작하였다. 두스파이럴스트립라인은안테나의크기와외관을고려하여적층구조로배치하였다. 상부사각스파이럴스트립라인은기생소자로서접지면에단락핀으로연결되어있다. 하부사각스파이럴라인은안테나의주요복사소자로써접지면에프로브핀을통하여 50 Ω 마이크로스트립라인으로연결되어있다. 지름이 1.0 mm인단락핀과프로브핀사이간격은 d 이다. 두 open-ended 두개의슬릿은접지면의위쪽 (c) 상부스파이럴정면도 (c) Top view of the upper spiral (d) 하부스파이럴정면도 (d) Top view of the lower spiral 그림 1. 안테나구조 Fig. 1. Antenna structure. 끝부분에위치하며, 단락핀을기준으로서로대칭이되게배치하였다. 안테나의크기는 mm 3 이 900

3 고, mm 2 의접지면에설계하였으며, 접지면의기판은비유전율이 3.38이고두께가 mm이다. 각대역에서의임피던스정합을위하여상부스파이럴과하부스파이럴의폭, 길이, 높이, 그리고슬릿의폭과길이를조절하여최적조건의안테나설계파라미터를얻어내었다. Ⅲ. 안테나특성 안테나의크기를줄이는가장좋은방법은도체의전류경로를최대화하는것이다. 그러므로사각스파이럴구조는이러한특성을구현할수있는가장좋은방법이다. 그중에서도이중스파이럴스트립라인로디드모노폴안테나는이중공진으로인하여광대역특성을가진다 [6]. 제안한안테나는휴대폰에적용하기위하여소형이면서여러대역을수용할수있게설계하였다. 안테나설계를위한시뮬레이션은 CST사의전자기파상용시뮬레이터인 MWS (Microwave Studio) 를사용하였다. 그림 2는하부사각스파이럴스트립라인의길이 L의변화에따른반사손실특성이다. 길이를 93.8 mm에서 95.8 mm, 97.8 mm로증가시키면첫번째대역의높은쪽공진주파수가 0.9 GHz에서 0.87 GHz, 0.84 GHz로, 두번째대역의높은쪽공진주파수가 2.1 GHz에서 2.07 GHz, 2.04 GHz로각각감소한다. 그러나첫번째대역의낮은쪽공진주파수와두번째대역의낮은쪽공진주파수는 0.79 GHz와 1.78 GHz 근처에서거의 그림 2. 하부스파이럴라인의길이변화에따른반사손실 Fig. 2. Variation of return loss with respect to the length of lower spiral line. 그림 3. 상부사각스파이럴라인의간격변화에따른반사손실 Fig. 3. Variation of return loss with respect to the gap of upper spiral line. 변화가없다. 그러므로하부사각스파이럴스트립라인의길이는첫번째와두번째대역에서높은쪽공진주파수를결정함을알수있다. 그림 3은상부사각스파이럴스트립라인의간격 g의변화에따른반사손실특성이다. 간격을 1.0 mm에서 1.2 mm, 1.4 mm로증가시키면, 단락핀을포함한상부사각스파이럴스트립라인의전체길이가감소된다. 그림에서보는바와같이첫번째대역의낮은쪽공진주파수는 0.77 GHz에서 0.79 GHz, 0.8 GHz로증가하고, 두번째대역의낮은쪽공진주파수는 1.74 GHz에서 1.78 GHz, 1.83 GHz로각각증가한다. 반면에첫번째대역과두번째대역의높은쪽공진주파수는각각 0.87 GHz와 2.07 GHz에서거의변화가없다. 그러므로상부사각스파이럴스트립라인의길이는첫번째와두번째대역에서낮은쪽공진주파수를결정함을알수있다. 그림 4는단락핀의지름변화에따른반사손실변화이다. 단락핀의지름이 0.5 mm에서 1.0 mm, 1.5 mm로증가시키면첫번째대역에서의낮은쪽공진주파수가 0.76 GHz에서 0.79 GHz, 0.83 GHz로증가하고, 두번째대역에서의낮은쪽공진주파수는 1.74 GHz에서 1.78 GHz, 1.83 GHz로각각증가한다. 반면첫번째대역에서의높은쪽공진주파수와두번째대역에서의높은쪽공진주파수는거의변화가없었다. 단락핀의지름이늘어남에따라단락핀의인덕턴스가줄어듦으로, 공진주파수는증가하였 901

4 韓國電磁波學會論文誌第 19 卷第 8 號 2008 年 8 月 그림 4. 단락핀지름변화에따른반사손실 Fig. 4. Variation of return loss with respect to the diameter of shorting pin. 다. 위결과로부터, 상부의사각스파이럴은각대역에서낮은쪽공진주파수를결정한다는것을알수있다. 그림 5는슬릿의길이 l s 의변화에따른반사손실변화이다. 길이를 3 mm에서 6 mm, 9 mm로증가시키면두번째대역의낮은쪽공진주파수가 1.82 GHz에서 1.78 GHz, 1.73 GHz로크게감소하고첫번째대역에서의낮은쪽공진주파수는조금감소하였다. 반면, 첫번째대역과두번째대역의높은쪽공진주파수는거의변화가없었다. 이러한결과로부터상부사각스파이럴과접지면의슬릿은첫번째대역과두번째대역의낮은쪽공진주파수를결정함을알수있다. 특히슬릿은두번째공진주파수대역의낮은쪽공진주파수에큰영향을준다. 표 1에는하부사각스파이럴스트립라인의길이 L, 상부사각스파이럴스트립라인의간격 g, 단락핀의지름, 슬릿의길이변화에따른반사손실을요약하였다. 그림 5. 슬릿길이변화에따른반사손실 Fig. 5. Variation of return loss with respect to the length of slit. 그림 6에는위의설계값을토대로실제안테나를제작한사진이며, 측정결과시뮬레이션결과와유사한특성을얻었다. 그림 7에는시뮬레이션을통하여계산한안테나 그림 6. 제작된 4 중대역안테나 Fig. 6. Fabricated quadband antenna. 표 1. 설계변수에따른반사손실변화 Table 1. Variation of return loss with respect to each parameter. 1 st freq. band 2 nd freq. band Parameter(Variation) Lower resonance Higher resonance Lower resonance Higher resonance Lower spiral length(increase) Remain Decrease Remain Decrease Upper spiral gap(increase) Increase Remain Increase Remain Shorting pin diameter(increase) Increase Remain Increase Remain Slits length(increase) Decrease Remain Decrease Remain 902

5 (a) 0.86 GHz 그림 7. 최적화된안테나의반사손실 Fig. 7. Return loss of the optimized antenna. 와제작하여측정한안테나의반사손실특성을나타내었다. 계산된안테나의반사손실은낮은쪽중심주파수 GHz에서 0.775~0.913 GHz의대역폭을, 높은쪽중심주파수 GHz에서 1.744~ GHz의대역폭을가지며, 측정된반사손실은낮은쪽중심주파수 GHz에서 0.798~0.897 GHz와높은쪽중심주파수인 GHz에서 ~2.245 GHz의대역폭을가진다. 측정결과, 낮은쪽주파수에서의대역폭이시뮬레이션결과보다작은이유는상부및하부사각스파이럴의정렬문제로보인다. 표 2에는전산모의실험결과와측정한안테나의반사손실특성을요약하였다. 그림 8은 Cellular, PCS, UMTS와 IMT-2000 대역의중심주파수에서시뮬레이션및측정한복사패턴을보여준다. 시뮬레이션결과안테나는모노폴형태의복사패턴을가진다. 표 3은전산모의실험결과및측정한안테나의최대이득을요약하였다. 표 2. 최적화된안테나의반사손실 Table 2. Return loss of the optimized antenna. Simulation Measurement 1 st freq. band (GHz) 0.775~ % 0.797~ % 2 nd freq. band (GHz) 1.744~ % 1.748~ % (b) 1.81 GHz (c) 1.92 GHz (d) 2.04 GHz 그림 8. 제안한안테나의 x-z, y-z 평면에서의복사패턴 Fig. 8. Measured radiation patterns of the proposed antenna in the x-z and y-z plane. Ⅳ. 결론 본논문에서는다중대역에서응용할수있는이 903

6 韓國電磁波學會論文誌第 19 卷第 8 號 2008 年 8 月 표 3. 안테나최대이득 Table 3. The maximum antenna gains. Frequency (GHz) Plane Simulation (dbi) Measurement (dbi) x-z y-z x-z y-z x-z y-z x-z y-z 중스파이럴스트립라인로디드모노폴안테나를제안하였다. 제안한안테나는 mm 3 의크기를가지며, 계산된안테나의반사손실은낮은쪽중심주파수 GHz에서 0.775~0.913 GHz의대역폭을, 높은쪽중심주파수 GHz에서 1.747~ GHz의대역폭을가지며, 측정된반사손실은낮은쪽중심주파수 GHz에서 0.798~0.897 GHz와높은쪽중심주파수인 GHz에서 ~2.245 GHz의대역폭으로전산모의실험결과와유사하며, 최대이득은 dbi, 4.07 dbi, 2.72 dbi 와 4.33 dbi 로써 Cellular(0.824~0.894 GHz), PCS(1.750 ~1.870 GHz), UMTS(1.920~2.170 GHz) 그리고 IMT- 2000(1.885~2.200 GHz) 대역을동시에수용한다. 그러므로제안한안테나는작은크기와광대역특성, 모노폴안테나형태의복사패턴을가지므로, 휴대폰등소형이동통신기기에응용이가능하다. 참고문헌 [1] C. Lee, S. Park, "A novel compact cable-fed antenna for a GSM/PCS handset", Microw. Opt. Technol. Lett., vol. 46, pp , Sep [2] M. Martínez-Vázquez, O. Litschke, M. Geissler, D. Heberling, A. Martínez-González, and D. Sánchez- Hernández, "Integrated planar multiband antennas for personal communication handsets", IEEE Trans. Antennas Prop., vol. 54, no. 2, pp , Feb [3] I. Kim, C. W. Jung, S. -M. Han, and Y. E. Kim, "Wing-shaped antenna with two-port configuration for multi-band mobile communication systems", Electron. Lett., vol. 43, no. 24, Nov [4] I. F. Chen, C. M. Chiang, "Multi-folded tapered monopole antenna for wideband mobile handset applications", Electron. Lett., vol. 40, no. 10, pp , [5] K. L. Wong, Planar Antennas for Wireless Communications, Wiley-Interscience, [6] T. K. Nguyen, K. Lee, H. Choo, and I. Park, "A compact spiral stripline-loaded monopole antenna with a vertical ground plane", Microwave Opt. Technol. Lett., vol. 50, no. 1, pp , Jan [7] J. H. Jung, Y. H Lee, and I. Park, "Electromagnetically coupled small broadband rectangular diskloaded monopole antenna", IEEE Wireless Propagat. Lett., vol. 2, pp , [8] M. F. Abedin, M. Ali, "Modifying the ground plane and its effect on planar inverted-f antennas(pifas) for mobile phone handsets", IEEE Antennas Wireless Propag. Lett., vol. 2, no. 1, pp , Jul [9] R. Hossa, A. Byndas, and M. E. Bialkowski, "Improvement of compact terminal antenna performance by incorporating open-ends slots in ground plane", IEEE Microwave Wireless Components Lett., vol. 14, no. 6, pp , Jun

7 김병철 2004 년 2 월 : 단국대학교전자공학과 ( 공학사 ) 2007 년 9 월 ~ 현재 : 아주대학교전자공학과석사과정 [ 주관심분야 ] 안테나설계 추호성 1998 년 2 월한양대학교전파공학과 ( 공학사 ) 2000 년 8 월미국 Univ. of Texas at Austin 전자전기공학부 ( 공학석사 ) 2003 년 5 월미국 Univ. of Texas at Austin 전자전기공학부 ( 공학박사 ) 2003 년 6 월 ~2003 년 8 월 : 미국 Univ. of Texas at Austin 전자전기공학부 (Post Doctor) 2003 년 8 월 ~ 현재 : 홍익대학교전자전기공학부조교수 [ 주관심분야 ] 초소형안테나, 최적화알고리즘을이용한안테나설계, RFID 용태그및리더안테나 Nguyen Truong Khang 2006 년 2 월 : National University of Hochiminh City 계산물리학과 ( 공학사 ) 2006 년 3 월 ~ 현재 : 아주대학교전자공학과석 박사통합과정 [ 주관심분야 ] 안테나설계 박익모 1984 년 : 뉴욕주립대학교전기전자공학과 ( 공학사 ) 1989 년 : 일리노이대학교전기전자및컴퓨터공학과 ( 공학석사 ) 1994 년 : 일리노이대학교전기전자및컴퓨터공학과 ( 공학박사 ) 1994 년 ~1996 년 : LG 전자기술원 1996 년 ~ 현재 : 아주대학교전자공학부교수 [ 주관심분야 ] 초고주파및테라헤르츠파수동소자 ( 안테나포함 ) 설계및해석 905

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 16 卷第 6 號 2005 年 6 月論文 2005-16-6-11 Design of Electromagnetically Coupled Small Broadband Monopole Antenna with Vertical Ground Plane 김명범 정종호 추호성 * 박익모 Myung-Bum Kim Jong-Ho Jung Hosung Choo*

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

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

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 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

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

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

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

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 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

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

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 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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA Journal of the Korea Institute of Information and Communication Engineering 윤중한 * Design and Manufacture of CPW-fed Two Arc-shaped Antenna for WLAN Applications Joong-Han Yoon * Department of Electron

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 18 卷第 12 號 2007 年 12 月論文 2007-18-12-01 Disk-Loaded 다이폴과 Folded 다이폴로동작하는 Reconfigurable 안테나 A Reconfigurable Antenna for Alternative Operation between Disk-Loaded Dipole and Folded Dipole 박슬기

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. 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

<313620C1A4C3A2BFF82DB1A4B4EBBFAAC0C720C0CCC1DFB4EBBFAA20B5BFC0DBC0BB20C0A7C7D120504D50BFEB2E687770>

<313620C1A4C3A2BFF82DB1A4B4EBBFAAC0C720C0CCC1DFB4EBBFAA20B5BFC0DBC0BB20C0A7C7D120504D50BFEB2E687770> 한국산학기술학회논문지 Vol. 11, No. 3, pp. 891-895, 2010 광대역의이중대역동작을위한 PMP 용소형 / 부착형 DVB-H 안테나 염인수 1, 정창원 1* 1 서울산업대학교 NID 융합기술대학원 Compact & Contact DVB-H Antenna with Broad Dual-band operation for PMP Applications

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 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

<363720C0CCC1BEC0CD2DC1F7B7C420B1DEC0FCB5C820B5CE20B0B3C0C720B4D9C0CCC6FA2E687770>

<363720C0CCC1BEC0CD2DC1F7B7C420B1DEC0FCB5C820B5CE20B0B3C0C720B4D9C0CCC6FA2E687770> Journal of the Korea Academia-Industrial Cooperation Society Vol. 12, No. 11 pp. 5214-5218, 2011 http://dx.doi.org/10.5762/kais.2011.12.11.5214 여준호 1, 이종익 2* 1 대구대학교정보통신공학부, 2 동서대학교전자공학과 Bandwidth Improvement

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. 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

(2002).hwp

(2002).hwp 工學碩士學位論文 광대역육각형평판모노폴안테나 A Wideband Hexagonal Plate Monopole Antenna 忠北大學校大學院 電波工學科電波通信工學專攻 李相吉 2006 年 2 月 工學碩士學位論文 광대역육각형평판모노폴안테나 A Wideband Hexagonal Plate Monopole Antenna 指導敎授 安炳哲 電波工學科電波通信工學專攻 李相吉

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. 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 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

(2002).hwp

(2002).hwp - Conical-Cylindrical Compound Monopole Antenna 2006 2 - Conical Cylindrical Compound Monopole Antenna. 2006 2 . 2006 2 Abstract List of tables List of figures. 1. 4 2.1 4 2.2 5 2.3 End cap 20 2.4 21.

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

韓國電磁波學會論文誌第 20 卷第 12 號 2009 年 12 月. 1970, cm., RF, [1],[2]. (CW: Continuous-Wave), [2]. GHz,., Ka- [3] 5.8 GHz [4], 2.4 GHz [5]. 2.4 GHz ISM (Industri

韓國電磁波學會論文誌第 20 卷第 12 號 2009 年 12 月. 1970, cm., RF, [1],[2]. (CW: Continuous-Wave), [2]. GHz,., Ka- [3] 5.8 GHz [4], 2.4 GHz [5]. 2.4 GHz ISM (Industri 韓國電磁波學會論文誌第 20 卷第 12 號 2009 年 12 月論文 2009-20-12-11 PLL 2.4 GHz A 2.4 GHz Bio-Radar System with Small Size and Improved Noise Performance Using Single Circular-Polarized Antenna and PLL 장병준 박재형 육종관 문준호

More information

<343420BFA9C1D8C8A32DC0CCB5BFC5EBBDC520B1E2C1F6B1B9BFEB20B1A4B4EBBFAA2E687770>

<343420BFA9C1D8C8A32DC0CCB5BFC5EBBDC520B1E2C1F6B1B9BFEB20B1A4B4EBBFAA2E687770> Journal of the Korea Academia-Industrial cooperation Society Vol. 13, No. 9 pp. 4165-4170, 2012 http://dx.doi.org/10.5762/kais.2012.13.9.4165 이동통신기지국용광대역 quasi-yagi 안테나에관한연구 이종익 1, 여준호 2* 1 동서대학교전자공학과,

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

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 18 卷第 4 號 2007 年 4 月論文 2007-18-4-11 Design of the Broadband TEM Horn Antenna Using a Genetic Algorithm 나영선 추호성 이주광 * 강진섭 * Youngsun Na Hosung Choo Joogwang Lee* Jinseob Kang* 요약 본논문에서는유전자알고리즘을이용하여시간영역측정에사용할광대역

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 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

00-2 목차.hwp

00-2 목차.hwp Journal of the Korea Academia-Industrial cooperation Society Vol. 15, No. 5 pp. 3074-3078, 2014 http://dx.doi.org/10.5762/kais.2014.15.5.3074 ISSN 1975-4701 / eissn 2288-4688 염인수 1, 강성훈 1, 정창원 1* 1 서울과학기술대학교,

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 16 卷第 5 號 2005 年 5 月論文 2005-16-5-04 UHF 대역 RFID 리더용 Crooked Wire 안테나설계 Design of Crooked Wire Antennas for UHF Band RFID Reader 주재율 추호성 박익모 * 오이석 Jae-Yul Choo Ho-Sung Choo Ik-Mo Park* Yi-Sok

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

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

<303320C1A4C3A2BFF82DBCBFB7EAB7AF20B9D720C4BFB3BCC6BCBAF1C6BC20B4EBBFAA20C5EBC7D5BFEB20B5BFBDC3B5BFC0DBB8F0B5E52E687770>

<303320C1A4C3A2BFF82DBCBFB7EAB7AF20B9D720C4BFB3BCC6BCBAF1C6BC20B4EBBFAA20C5EBC7D5BFEB20B5BFBDC3B5BFC0DBB8F0B5E52E687770> 한국산학기술학회논문지 Vol. 10, No. 6, pp. 1170-1174, 2009 박세현 1, 양찬우 2, 정창원 2* 1 DMC 연구소, 삼성전자, 2 NID 융합기술대학원, 서울산업대학교 Frequency Reconfigurable Antenna for Multi Mode & Multi Band (MMMB) Communication Systems Sehyun

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 18 卷第 11 號 2007 年 11 月論文 2007-18-11-11 이중기판결함접지구조를이용한비대칭윌킨슨전력분배기 An Unequal Wilkinson Power Divider Using Defected Ground Structure in Double Layered Substrate 임종식 구재진 오성민 정용채 * 안달 Jongsik

More information

<323120C3A4B1D4BCF62DC0FDC0FCBCBEBCADBFEB20582DB9EAB5E520B4EBBFAA20C6D0C4A120BEEEB7B9C0CC20BEC8C5D7B3AA20BCB3B0E82E687770>

<323120C3A4B1D4BCF62DC0FDC0FCBCBEBCADBFEB20582DB9EAB5E520B4EBBFAA20C6D0C4A120BEEEB7B9C0CC20BEC8C5D7B3AA20BCB3B0E82E687770> 한국산학기술학회논문지 Vol. 11, No. 1, pp. 125-129, 2 채규수 1* 1 백석대학교정보통신학부 Design of an X-band patch array antenna for an energy saving system Gyoo-Soo Chae 1* 1 Division of Information Communication Eng., Baekseok

More information

韓國電磁波學會論文誌第 21 卷第 12 號 2010 年 12 月論文 On Reducing the Shadow Region for Extending the Service Area of TBN-Jeonju Broadcasting 김태훈 이문호 이미성

韓國電磁波學會論文誌第 21 卷第 12 號 2010 年 12 月論文 On Reducing the Shadow Region for Extending the Service Area of TBN-Jeonju Broadcasting 김태훈 이문호 이미성 韓國電磁波學會論文誌第 21 卷第 12 號 2010 年 12 月論文 2010-21-12-03 On Reducing the Shadow Region for Extending the Service Area of TBN-Jeonju Broadcasting 김태훈 이문호 이미성 조계문 Tae-Hoon Kim*, ** Moon Ho Lee* Mi Sung Lee* Kye

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 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

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

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 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

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA ZigBee 통신을위한인쇄형야기안테나 김은주 *, 주병국 *, 방재훈 *, 안병철 * A Printed Yagi Antenna for ZigBee Applications Eun-Ju Kim*, Byung-Guk Ju*, Jea-Hoon Bang* and Bierng-Chearl Ahn* 요약 본논문에서는 ZigBee 통신에적용이가능한 2.4GHz 대역에서동작하는고이득인쇄형야기안테나를제안하였다.

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

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. 214 Nov.; 25(11), 1164 1171. http://dx.doi.org/1.5515/kjkiees.214.25.11.1164 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) BCI

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 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. 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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 19 卷第 12 號 2008 年 12 月論文 2008-19-12-14 이동통신용소형방향성다이폴안테나 Small Size Directional Dipole Antenna for Mobile Communications 이광재 우덕제 김상진 * 이재욱 이택경 Kwang-Jae Lee Duk-Jae Woo Sang-Jin Kim* Jae-Wook

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

01 주은만.hwp

01 주은만.hwp THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Feb.; 25(2), 137 148. http://dx.doi.org/10.5515/kjkiees.2014.25.2.137 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) UWB

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 6 卷第 9 號 2005 年 9 月論文 2005-6-9-2 자기아파인프랙탈구조를이용한 CPW 급전크로스안테나 A CPW-Fed Self-Affine Cross Shape Fractal Antenna 김태환 이재욱 조춘식 이윤현 Tae-Hwan Kim Jae-Wook Lee Choon-Sik Cho Yun-Hyun Lee 요약 본논문에서는처음으로,

More information

Preliminary spec(K93,K62_Chip_081118).xls

Preliminary spec(K93,K62_Chip_081118).xls 2.4GHz Antenna K93- Series KMA93A2450X-M01 Antenna mulilayer Preliminary Spec. Features LTCC Based designs Monolithic SMD with small, low-profile and light-weight type Wide bandwidth Size : 9 x 3 x 1.0mm

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

<343620C0CCC1BEC0CD2DC1F6BBF3C6C420B5F0C1F6C5D020B9E6BCDB20BCF6BDC5BFEB20BCD2C7FC2E687770>

<343620C0CCC1BEC0CD2DC1F6BBF3C6C420B5F0C1F6C5D020B9E6BCDB20BCF6BDC5BFEB20BCD2C7FC2E687770> Journal of the Korea Academia-Industrial cooperation Society Vol. 14, No. 4 pp. 1908-1914, 2013 http://dx.doi.org/10.5762/kais.2013.14.4.1908 이종익 1, 여준호 2*, 박진택 3 1 동서대학교전자공학과, 2 대구대학교정보통신공학부, 3 창신대학교모바일통신공학과

More information

½½¶óÀ̵å Á¦¸ñ ¾øÀ½

½½¶óÀ̵å Á¦¸ñ ¾øÀ½ 하나의그룹 FH/FDMA 시스템에서 겹쳐지는슬롯수에따른성능분석 구정우 jwku@eve.yonsei.ac.kr 2000. 4. 27 Coding & Information Theory Lab. Department of Electrical and Computer Engineering, Yonsei Univ. 차례 (Contents) 1. 도입 (Introduction)

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 17 卷第 12 號 2006 年 12 月論文 2006-17-12-07 소형및변형된접지면을이용한신호선복사성방사레벨의감소방법 Reduction of Radiated Emission from Signal Traces Using Modified and Small-Sized Ground Patterns 박필성 이재욱 이택경 조춘식 김재흥 * 최형도

More information

<30312DC1A4BAB8C5EBBDC5C7E0C1A4B9D7C1A4C3A52DC1A4BFB5C3B62E687770>

<30312DC1A4BAB8C5EBBDC5C7E0C1A4B9D7C1A4C3A52DC1A4BFB5C3B62E687770> Journal of the Korea Institute of Information and Communication Engineering 한국정보통신학회논문지 (J. Korea Inst. Inf. Commun. Eng.) Vol. 19, No. 2 : 265~271 Feb. 2015 WBAN 용이중대역미엔더마이크로스트립안테나설계 오호권 * Design of Dualband

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

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 논문 10-35-08-15 한국통신학회논문지 '10-08 Vol.35 No. 8 건설생산성 향상을 위한 건설현장 내 RFID 네트워크 시스템 적용 방안 준회원 김 신 구*, 정회원 이 충 희*, 이 성 형*, 종신회원 김 재 현* Method of RFID Network System Application for Improving of Construction

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會誌 電磁波技術 第 20 卷第 1 號 2009 年 1 月 GHz 대역에서셋업용테이블영향연구 1) 김남 이승우 양준규 * 권종화 ** 강상훈 *** 충북대학교 * 전파연구소 ** 한국전자통신연구원 *** 한국전파진흥원 Ⅰ. 서론정보통신기기, 무선통신기기, 멀티미디어기기등의정보화기기의발달로사람들의삶은한층편안해지고, 광범위한정보를쉽고빠르게습득할수있게되었다.

More information

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 25(12),

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Dec.; 25(12), THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2014 Dec.; 25(12), 12281235. http://dx.doi.org/10.5515/kjkiees.2014.25.12.1228 ISSN 1226-3133 (Print)ISSN 2288-226X (Online)

More information

Microsoft Word - lab-16-yagi-antenna.doc

Microsoft Word - lab-16-yagi-antenna.doc Lab-11 Yagi Antenna I. 이론 1. Yagi Antenna Fundamentals ㅇ야기안테나기초 - 1926년동경제국대학의 Shintaro Uda 교수에의해발명되고 Yagi에의해영문으로발표됨. - 반파장다이폴뒤에반사기 (reflector), 앞에다수의도파기 (director) 를설치하여이득증가 - 급전된반파장다이폴주변에급전되지않은반파장다이폴을기생소자

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

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

(AESA) [1]. AESA ( ). 10,000 30,000 (lenslets) ( ). 3. AESA. AESA T/R 500 1,500,, T/R,. AESA. AESA, T/R.., AESA. AESA( ), (T/R). AESA, (graceful degra

(AESA) [1]. AESA ( ). 10,000 30,000 (lenslets) ( ). 3. AESA. AESA T/R 500 1,500,, T/R,. AESA. AESA, T/R.., AESA. AESA( ), (T/R). AESA, (graceful degra 韓國電磁波學會論文誌第 21 卷第 12 號 2010 年 12 月論文 2010-21-12-05 (AESA) Development of Planar Active Electronically Scanned Array(AESA) Radar Prototype for Airborne Fighter 정민길 김동윤 김상근 전상미 나형기 Min-Kil Chong Dong-Yoon

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

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 논문 10-35-03-03 한국통신학회논문지 '10-03 Vol. 35 No. 3 원활한 채널 변경을 지원하는 효율적인 IPTV 채널 관리 알고리즘 준회원 주 현 철*, 정회원 송 황 준* Effective IPTV Channel Control Algorithm Supporting Smooth Channel Zapping HyunChul Joo* Associate

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

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 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

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

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

지능정보연구제 16 권제 1 호 2010 년 3 월 (pp.71~92),.,.,., Support Vector Machines,,., KOSPI200.,. * 지능정보연구제 16 권제 1 호 2010 년 3 월

지능정보연구제 16 권제 1 호 2010 년 3 월 (pp.71~92),.,.,., Support Vector Machines,,., KOSPI200.,. * 지능정보연구제 16 권제 1 호 2010 년 3 월 지능정보연구제 16 권제 1 호 2010 년 3 월 (pp.71~92),.,.,., Support Vector Machines,,., 2004 5 2009 12 KOSPI200.,. * 2009. 지능정보연구제 16 권제 1 호 2010 년 3 월 김선웅 안현철 社 1), 28 1, 2009, 4. 1. 지능정보연구제 16 권제 1 호 2010 년 3 월 Support

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

8-VSB (Vestigial Sideband Modulation)., (Carrier Phase Offset, CPO) (Timing Frequency Offset),. VSB, 8-PAM(pulse amplitude modulation,, ) DC 1.25V, [2

8-VSB (Vestigial Sideband Modulation)., (Carrier Phase Offset, CPO) (Timing Frequency Offset),. VSB, 8-PAM(pulse amplitude modulation,, ) DC 1.25V, [2 VSB a), a) An Alternative Carrier Phase Independent Symbol Timing Offset Estimation Methods for VSB Receivers Sung Soo Shin a) and Joon Tae Kim a) VSB. VSB.,,., VSB,. Abstract In this paper, we propose

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

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

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

°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

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

1 Nov-03 CST MICROWAVE STUDIO Microstrip Parameter sweeping Tutorial Computer Simulation Technology

1   Nov-03 CST MICROWAVE STUDIO Microstrip Parameter sweeping Tutorial Computer Simulation Technology 1 CST MICROWAVE STUDIO Microstrip Parameter sweeping Tutorial Computer Simulation Technology wwwcstcom wwwcst-koreacokr 2 1 Create a new project 2 Model the structure 3 Define the Port 4 Define the Frequency

More information

RF S-. (sacecraft) [3],[5] [7]. 그림 1. RF Fig. 1. Configuration for RF comatibility testing between launcher and ground station in assembly building..,

RF S-. (sacecraft) [3],[5] [7]. 그림 1. RF Fig. 1. Configuration for RF comatibility testing between launcher and ground station in assembly building.., THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. 2015 Feb.; 26(2), 148 157. htt://dx.doi.org/10.5515/kjkiees.2015.26.2.148 ISSN 1226-3133 (Print) ISSN 2288-226X (Online) RF S-

More information

Microsoft Word - lab-06-monopole.doc

Microsoft Word - lab-06-monopole.doc Lab-06: Monopole Antenna I. Theory 1. 모노폴안테나개요ㅇ구조 - 다이폴안테나의변형 - 다이폴안테나의 1개도선은유지하고나머지 1개도선은접지판 ( 지면 / 수면, 금속 / 도선접지면, 장치케이스, 인쇄회로기판접지면등 ) 으로대체 그림 : (a) 반파장다이폴안테나, (b) 1/4- 파장모노폴안테나 ㅇ용도 - 통신, 방송, 전파항법, 전파비컨,

More information

DBPIA-NURIMEDIA

DBPIA-NURIMEDIA 韓國電磁波學會論文誌第 17 卷第 4 號 2006 年 4 月論文 2006-17-4-05 병리학적조직진단장치개발에대한타당성분석연구 Feasibility Study for the Development of a Device for Pathological Tissue 고채옥 박민영 김정란 이애경 * 최형도 * 최재익 ** 백정기 Chea-Ok Ko Min-Young

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

Microsoft PowerPoint - analogic_kimys_ch10.ppt

Microsoft PowerPoint - analogic_kimys_ch10.ppt Stability and Frequency Compensation (Ch. 10) 김영석충북대학교전자정보대학 2010.3.1 Email: kimys@cbu.ac.kr 전자정보대학김영석 1 Basic Stability 10.1 General Considerations Y X (s) = H(s) 1+ βh(s) May oscillate at ω if βh(jω)

More information