中国物理B ›› 2014, Vol. 23 ›› Issue (3): 37305-037305.doi: 10.1088/1674-1056/23/3/037305

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

High-efficiency S-band harmonic tuning GaN amplifier

曹梦逸a, 张凯a, 陈永和a, 张进成a, 马晓华a b, 郝跃a   

  1. a Key Laboratory for Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi’an 710071, China;
    b School of Technical Physics, Xidian University, Xi’an 710071, China
  • 收稿日期:2013-06-03 修回日期:2013-08-14 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61203211), the Natural Science Foundation of Jiangsu Higher Education Institutions of China (Grant No. 13KJB140006), and the Foundation for Outstanding Young Teachers of Nanjing University of Information Science & Technology, China (Grant No. 20110423).

High-efficiency S-band harmonic tuning GaN amplifier

Cao Meng-Yi (曹梦逸)a, Zhang Kai (张凯)a, Chen Yong-He (陈永和)a, Zhang Jin-Cheng (张进成)a, Ma Xiao-Hua (马晓华)a b, Hao Yue (郝跃)a   

  1. a Key Laboratory for Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi’an 710071, China;
    b School of Technical Physics, Xidian University, Xi’an 710071, China
  • Received:2013-06-03 Revised:2013-08-14 Online:2014-03-15 Published:2014-03-15
  • Contact: Ma Xiao-Hua E-mail:xhma@xidian.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61203211), the Natural Science Foundation of Jiangsu Higher Education Institutions of China (Grant No. 13KJB140006), and the Foundation for Outstanding Young Teachers of Nanjing University of Information Science & Technology, China (Grant No. 20110423).

摘要: In this paper, we present a high-efficiency S-band gallium nitride (GaN) power amplifier (PA). This amplifier is fabricated based on a self-developed GaN high-electron-mobility transistor (HEMT) with 10 mm gate width on SiC substrate. Harmonic manipulation circuits are presented in the amplifier. The matching networks consist of microstrip lines and discrete components. Open-circuited stub lines in both input and output are used to tune the 2nd harmonic wave and match the GaN HEMT to the highest efficiency condition. The developed amplifier delivers an output power of 48.5 dBm (~ 70 W) with a power-added efficiency (PAE) of 72.2% at 2 GHz in pulse condition. When operating at 1.8–2.2 GHz (20% relative bandwidth), the amplifier provides an output power higher than 48 dBm (~ 65 W), with a PAE over 70% and a power gain above 15 dB. When operating in continuous-wave (CW) operating conditions, the amplifier gives an output power over 46 dBm (40 W) with PAE beyond 60% over the whole operation frequency range.

关键词: power amplifier, GaN high-electron-mobility transistor (HEMT), high efficiency, harmonic manipulation

Abstract: In this paper, we present a high-efficiency S-band gallium nitride (GaN) power amplifier (PA). This amplifier is fabricated based on a self-developed GaN high-electron-mobility transistor (HEMT) with 10 mm gate width on SiC substrate. Harmonic manipulation circuits are presented in the amplifier. The matching networks consist of microstrip lines and discrete components. Open-circuited stub lines in both input and output are used to tune the 2nd harmonic wave and match the GaN HEMT to the highest efficiency condition. The developed amplifier delivers an output power of 48.5 dBm (~ 70 W) with a power-added efficiency (PAE) of 72.2% at 2 GHz in pulse condition. When operating at 1.8–2.2 GHz (20% relative bandwidth), the amplifier provides an output power higher than 48 dBm (~ 65 W), with a PAE over 70% and a power gain above 15 dB. When operating in continuous-wave (CW) operating conditions, the amplifier gives an output power over 46 dBm (40 W) with PAE beyond 60% over the whole operation frequency range.

Key words: power amplifier, GaN high-electron-mobility transistor (HEMT), high efficiency, harmonic manipulation

中图分类号:  (III-V semiconductors)

  • 73.61.Ey
84.30.Bv (Circuit theory) 84.30.Le (Amplifiers)