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

Similar documents
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 Jun.; 27(6),

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

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 Mar.; 28(3),

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

04 박영주.hwp

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 Nov.; 26(11),

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

. 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. vol. 26, no. 3, Mar (NFC: non-foster Circuit).,. (non-foster match

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

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

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

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

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

04 김영규.hwp

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

04 최진규.hwp

<35335FBCDBC7D1C1A42DB8E2B8AEBDBAC5CDC0C720C0FCB1E2C0FB20C6AFBCBA20BAD0BCAE2E687770>

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

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

<313920C0CCB1E2BFF82E687770>

05 목차(페이지 1,2).hwp

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 Jun.; 27(6),

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

09권오설_ok.hwp

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

6 10 GHz InGaAs 0.15 μm 27 dbm GHz,, DAADetection And Avoid,. UWB. UWB 41.3 dbm/ MHz.,,, PRFPulse Repetition Frequency., UWB IC. UWB PA [1]

, 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. vol. 29, no. 6, Jun , [6]. E- [9],[10]. E- 3D EM(electromagnetic),,

11 함범철.hwp

07 최운성.hwp

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 Jul.; 27(7),

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 Jan.; 27(1), ISSN

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

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

03 장태헌.hwp

DBPIA-NURIMEDIA

Small-Cell 2.6 GHz Doherty 표 1. Silicon LDMOS FET Table 1. Comparison of silicon LDMOS FET and GaN- HEMT. Silicon LDMOS FET Bandgap 1.1 ev 3.4 ev 75 V

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

,.. 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 Dec.; 26(12),

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

¼º¿øÁø Ãâ·Â-1

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

박선영무선충전-내지

< C6AFC1FD28B1C7C7F5C1DF292E687770>

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

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

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

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

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

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

PCB EMI,. LDWS..,. PCB.. LDWS,, Windshield. 1 LDWS,. PCB., (rise-time),, 5 40 (db/decade),. PCB 10, EMI PCB. Tool, EMI., Antenna. Source,,., EMI.. 제품구

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

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

09È«¼®¿µ 5~152s

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

08김현휘_ok.hwp

08 조영아.hwp

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

DBPIA-NURIMEDIA

인문사회과학기술융합학회

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

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Feb.; 26(2),

09 남형기.hwp

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 Nov.; 28(11),

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

歯4.PDF

±è¼ºÃ¶ Ãâ·Â-1

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 Mar.; 29(3),

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

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

<32382DC3BBB0A2C0E5BED6C0DA2E687770>

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

05 목차(페이지 1,2).hwp

,, RFID,. ITU-R [7], IoT (Internet of Thing), (ultra reliable) (low latency). IoT ( ) , [1]., [8] 10 IoT.,. Ofcom [10] IoT/M2M, (utilities),,

Microsoft Word - SRA-Series Manual.doc

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

°í¼®ÁÖ Ãâ·Â

DBPIA-NURIMEDIA

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

ApplicationKorean.PDF

04_이근원_21~27.hwp

Slide 1

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

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

(수정).hwp

DBPIA-NURIMEDIA

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

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

디지털포렌식학회 논문양식

Transcription:

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 of Wideband Spatial Combined High Power Amplifier 이호선 박관영 공동욱 전종훈 Ho-Seon Lee Kwan-Young Park Tong-Ook Kong Jong-Hoon Chun 요약 10 6 18 GHz 50 W. - -, 6 18 GHz. PCB -, Klopfensein Taper., 10 CMOS MFC(Multi-Function Core) MMIC 10 W GaN PA MMIC. 6 18 GHz 50 W. Abstract This paper is a study of 6 18 GHz wideband high power amplifier which is composed of 10 single amplifier and coaxial type spatial power combiner. The property of this spatial power combiner is on a similar principle to antipodal antenna radiation mechanism. Therefore, the key structure of proposed spatial power combiner is the antipodal finline PCB board and the finline curve shape is numerically synthesized by using Klopfensein s optimum impedance taper. The measured CW output power of spatial combined high power amplifier is nearly 50 W. In conclusion we prove the good combining performance between the spatial power combiner and 10 single amplifier over 6 18 GHz frequency ranges. Also, we developed the key component PA and MFC MMIC which controls the phase and gain of the each amplifier, The main characteristic of MFC MMIC is to maximize combining efficiency of power amplifier. Key words: Coaxial Type Spatial Power Combiner, High Power Amplifier, MFC, Wideband. 서론,,. W kw,, 5 %,, kv. HFSS. (RFcore Co., Ltd) Manuscript received February 3, 2017 ; Revised March 20, 2017 ; Accepted March 24, 2017. (ID No. 20170203-007) Corresponding Author: Jong-Hoon Chun (e-mail: jhchun@rfcore.com) 286 c Copyright The Korean Institute of Electromagnetic Engineering and Science. All Rights Reserved.

. /. / 2-way / Corporate, 2-way / /,. Corporate / 1/4, 6 18 GHz 3, Corporate. (a) Corporate (a) Corporate power combining structure (b) (b) Spatial power combining structure 그림 1. Fig. 1. Comparison of power combining method. Corporate. 1 Corporate. 6 18 GHz 10 50 W,., / MFC(Multi-Function Chip) MMIC.. 동축형공간결합기설계및제작 2 - ( ) 10 PCB,. 10 PCB 10, 50 Ω. TEM, TE TEM,. TE TEM, - (Anti-Podal). 2. 10 PCB Ground,. (coupling) PCB 287

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr. 2017. (a) (a) Structure of spatial power combiner (b) - (b) Structure of fin to micro-strip transformation 그림 2. Fig. 2. Configuration of coaxial type spatial power combiner. PCB.,, Balanced -., 10 PCB. 58.85 ( / : 9.6 mm/25.6 mm), - 3 Klopfenstein Taper. 3 Z L 50 Ω, Z 0 58.85 Ω 10, 10 58.85 Ω ln ln 그림 3. Fin line taper Fig. 3. Impedance model of fin line taper. cosh ln 제 종변형베셀함수 588.5 Ω. θ(f, z) - Taper., Γ m., 50 10 58.85 2(a) Linear Taper. Linear Taper Triangular Function Taper, 50 Ω Triangular Function Taper Linear Taper Taper, Linear Taper. 4. Taper EM Tool HFSS,. 4 288

(a) taper (a) Shape of fin line taper curve (b) PCB (b) Fin to micro-strip transform PCB 그림 4. Fig. 4. Fin to micro-strip transformation design results. 8 mm, 6 18 GHz.,. EM, 19.0 GHz. 20 GHz,. 4 Taper Length.,, (over-shoot)., Taper Length - Balun 4 Gap. 5., 5(b) 10. 1,. 5(a), 6 18 GHz 20 db, Linear Taper 15 db., 5(a) 19 GHz. 5(b), 6 18 GHz. 6(a). PCB 10 10,. PCB Roger RO- 4003(ε r =3.38, =0.3 mm). 10, Screw. 6(b). 8.05 GHz Over-shoot 10 db. 289

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr. 2017. 반사 손실 및 전달 특성 (a) (a) Return loss & transmission property 제작 사진 (a) (a) Photograph of fabrication 전계 분포 (b) (b) Field distribution 동축형 공간 결합기 시뮬레이션 결과 측정 결과 (b) (b) Measurement result 동축형 공간 결합기의 제작 및 측정 그림 5. Fig. 5. Simulation results of coaxial type spatial power combiner. 그림 6. Fig. 6. Fabrication & measurement of spatial power combiner. 적으로 2.0 db 내외의 삽입손실이지만, 최대 2.6 db 의 삽입손실이 확인된다. 이는 10개로 조각난 동축 선로 기구들을 조립함에 있어서 기구 오차가 절대적으로 영향 을 미친다. 즉, 공간결합 전력증폭기를 제작함에 있어서, 이와 같이 정밀한 기구 가공은 설계 과정 못지 않게 매우 중요하다. 덧붙여서, 그림 3에서 설계된 핀라인 변환기 1개는 588.5 Ω의 특성 임피던스를 핀라인 변환기의 50 Ω 마이 크로스트립 라인으로 임피던스 천이하는 역할을 한다. 따 라서 위의 임피던스 변환 관계를 적절히 이용하면 공 290

10,. 7 16 /., 588.5 Ω 16, 36.78 Ω, 10 58.85 Ω. 16 /,,. (a) (a) Photograph of fabrication 그림 8. Fig. 8. Example of foreign development. 8 20 /. [1], 15 db 9 db,., (Ripple).. 단일증폭기의제작 (b) (b) Measurement result 그림 7. 16- / Fig. 7. 16-way coaxial type spatial power combiner. 9 (Budget) 38.5 dbm(7.1 W). 6 2.6 db, 9 (Margin) 3.0 db. 291

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr. 2017. 그림 9. Fig. 9. Budget of spatial combined amplifier., 3.0 db 1.5 db. 9 10 +10 db 1.5 db, +8.5 db. 10 db 11.5 db. 10. PA MMIC MFC MMIC. PA MMIC 그림 10. Fig. 10. Configuration & composition of single amplifier. Winsemi, 38.5 dbm(7.1 W) (Margin) 40 dbm(10 W). CMOS MFC MMIC 7, 6 (Thru Time Delay). MFC MMIC PA MMIC 2 AMMP5618/6408(Avago ), (Equalizer). (bending). 11 PA MMIC. PA MMIC, Distributed., 6 18 GHz 20 db 10 db, 40 dbm.,,. 14, SMA -,.,.,, PCB. CMOS MFC MMIC, MFC 292

(a) (a) Block diagram (a) (a) Schematic diagram (b) (b) Measured thru time delay control properties (b) (b) Measured small signal property (c) (c) Measured gain control properties (c) (c) Measured output power property 그림 11. PA MMIC Fig. 11. PA MMIC characteristics. 그림 12. MFC MMIC Fig. 12. MFC MMIC characteristics.. 12 MFC MMIC 293

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr. 2017.. 0 208 ps(pico second) 0 32 db. 13. 13(a) 10 10 db 30 db,. 13(b) 10, 9 38.5 dbm (a) (a) Small signal property (b) (b) Output power 그림 13. Fig. 13. Measurement of single amplifier., 11 GHz 15 GHz 38.5 dbm. 50 W. 13 11 PA MMIC PA MMIC (bending).. 공간결합고출력전력증폭기제작 14(a). 10, /., /.,., 7,. 14(b). 15 [1]. 14 /,,, /, (AC-DC ), 16. 10 MFC, 294

광대역 공간 결합 고출력 전력증폭기 개발 해외 제작 사례 社 미국 그림 15. (Qorvo, ) Fig. 15. Example of foreign development(qorvo,inc. USA). 공간결합 개념도 (a) (a) Concept of spatial power combining 제작 사진 (a) (a) Photograph of fabrication 공간결합 사진 (b) (b) Photograph of spatial power combining 단일 증폭기의 공간 결합 그림 14. Fig. 14. Spatial power combining of single amplifier. 와 발열 온도 또한 GUI를 통해 확인이 가능하다. 앞서 언급하였듯이, 제작된 단일 증폭기는 동축형 공 간 결합기의 핀라인 변환기와 결합하여 조립되어지는 순 간 전달특성이 민감하게 변할 것으로 예상된다. 그러므로 각각 제작된 단일 증폭기의 이득 및 실시간 지연값을 공 간 결합하지 않은 상태에서 미리 설정하는 것은 큰 의미 가 없다. 따라서 최종 제작된 공간 결합형 전력 증폭기에 서는 단일 증폭기를 하나씩 순차적으로 Enable 해가면서 MFC의 이득 및 실시간 지연 값을 제어한다. 즉, 새로 제어 화면 (b) GUI (b) Screen of control GUI 공간 결합 전력 증폭기 제작 그림 16. Fig. 16. Fabrication of spatial combined high power amplifier. 운 단일 증폭기를 Enable 하였을 때 이전 상태 대비 가장 높은 출력이 되도록 새로운 단일 증폭기의 MFC 이득 및 실시간 지연 값을 설정하며, 이와 같은 방법으로 공간 결 295

THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 28, no. 4, Apr. 2017.. 17. 13(a) (Ripple) 10 db, 30 db., 10., 6 6 17.,, overshoot,. 17(b). 16 17 GHz 46.6 dbm(45.7 W) 47 dbm(50 W).. 14(b). 17 KCTL( ).. 결론 (a) (a) Small signal property,. 10 6 18 GHz 50 W,., PA MFC MMIC /., / W, TWTA. (b) (b) Output power 그림 17. Fig. 17. Measurement of spatial combined high power amplifier. References [1] H. Javadi-Bakhsh, et al., "A wideband twenty-element microwave spatial power combiner", Scientia Iranica D, pp. 853-860, Mar. 2014. 296

[2] Jia, P. "Broadband power combining device using antipodal nline structure", Capwireless Inc., U.S. Patent. [3] D. I. L. de Villiers, P. W. van der Walt, and P. Meyer, "Design of conical transmission line power combiners using tapered line matching sections", IEEE Trans. Microwave Theory Tech., vol. 56, no. 6, pp. 1478-1484, 2008. [4] K. Song, Y. Fan, and Z. He, "Broadband radial waveguide spatial combiner", IEEE Microwave and Wireless Component Letters, vol. 18, no. 2, pp. 73-75, 2008. [5] S. E. Hosseini, A. Banai, "Ultrabroadband power amplier using 16-way spatial combining line array", Wiley Microwave and Optical Technology Letters, vol. 55, no. 2, pp. 454-460, 2013. [6] N. S. Cheng, A. Alexanian, M. G. Case, D. B. Rensch, and R. A. York. "40-W CW broad-band spatial power combiner using dense finline arrays", IEEE Transactions on Microwave Theory and Techniques, vol. 47, no. 7, pp. 1070-1076, Jul. 1999. [7] A. Alexanian, R. A. York, "Broadband spatially combined amplifier array using tapered slot transitions in waveguide", IEEE Microwave and Guided Wave Letters, vol. 7, no. 2, pp. 42-44, Feb. 1997. [8] P. Jia, L. Y. Chen, A. Alexanian, and R. A. York, "Broadband high power amplifier using spatial power combining", IEEE Microwave Theory and Techniques Society, vol. 51, no. 12, pp. 2469-2475, Dec. 2003. [9] Behzad Razavi, "Design of analog CMOS integrated circuits", 2000. [10] Behzad Razavi, "RF microelectronics", 2011. 1998 2 : ( ) 2000 2 : ( ) 2000 3 2005 2 : 2005 3 2007 7 : LG MC 2007 8 2014 12 : ( ) 2015 1 : ( ) [ 주관심분야 ] 1995 8 : ( ) 2000 2 : ( ) 2000 4 2004 11 : ( ) 2015 1 : ( ) [ 주관심분야 ],, EMC 2010 2 : ( ) 2013 2 : ( ) 2013 7 : ( ) [ 주관심분야 ], 1982 2 : ( ) 1985 2 : ( ) 2000 2 : ( ) 2012 3 : ( ) [ 주관심분야 ] 297