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Pulsed-Bias Pulsed-RF Passive Load-Pull Measurement of an X-Band GaN HEMT Bare-chip  

Shin, Suk-Woo (광운대학교 전파공학과)
Kim, Hyoung-Jong (광운대학교 전파공학과)
Choi, Gil-Wong (광운대학교 전파공학과)
Choi, Jin-Joo (광운대학교 전자융합공학과)
Lim, Byeong-Ok ((주) 삼성탈레스(레이더연구소))
Lee, Bok-Hyung ((주) 삼성탈레스(레이더연구소))
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.10, no.1, 2011 , pp. 42-48 More about this Journal
Abstract
In this paper, a passive load-pull using a GaN HEMT (Gallium Nitride High Electron Mobility Transistor) bare-chip in X-band is presented. To obtain operation conditions that characteristic change by self-heating was minimized, pulsed drain bias voltage and pulsed-RF signal is employed. An accuracy impedance matching circuits considered parasitic components such as wire-bonding effect at the boundary of the drain is accomplished through the use of a electro-magnetic simulation and a circuit simulation. The microstrip line length-tunable matching circuit is employed to adjust the impedance. The measured maximum output power and drain efficiency of the pulsed load-pull are 42.46 dBm and 58.7%, respectively, across the 8.5-9.2 GHz band.
Keywords
Passive load-pull; pulsed load-pull; GaN HEMT bare-chip; X-band amplifier; pulse amplfier;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Z. Aboush, J. Lees, J. Benedikt and P. Tasker, "Active harmonic load-pull system for characterizing highly mismatched high power transistors," IEEE MTT-S Int. Microwave Symp. Dig., pp.1311-1314, Jun. 2005.
2 U. K. Mishra, P. Parikh and Y. Wu, "AlGaN/GaN HEMTs-An overview of device operation and applications," Proc. of the IEEE, vol.90, no.6, pp.1022-1031, Jun. 2002.   DOI   ScienceOn
3 김형종, 최진주, 김동윤, 나형기, "고조파 제어 회로를 이용한 X-대역 전력 증폭기의 효율 개선에 관한 연구," 한국전자파학회논문지, 제21권, 9호, pp.987-994, 2010. 9.
4 J. Hoversten, M. Roberg and Z. Popovic, "Harmonic load pull of high-power microwave devices using fundamental-only load pull tuners," 75th ARFTG, pp.1-4, 28 May 2010.
5 G. Simpson, "A comparison of harmonic tuning methods for load pull systems," Maury Microwave Corporation, Ontario, California, Available at: http: //www.maurymw.com, Jul. 2009.