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A Ka-Band 8 W Power Amplifier Module Using 4-Way Waveguide Power Combiners with High Isolation

높은 격리도 특성의 4:1 도파관 전력합성기를 이용한 Ka-대역 8 W 전력 증폭 모듈

  • Shin, Im-Hyu (Department of Radio Science and Engineering, Chungnam National University) ;
  • Kim, Choul-Young (Department of Electronics Engineering, Chungnam National University) ;
  • Lee, Man-Hee (ISR Research Center, LIG Nex1) ;
  • Joo, Ji-Han (ISR Research Center, LIG Nex1) ;
  • Lee, Sang-Joo (ISR Research Center, LIG Nex1) ;
  • Kim, Dong-Wook (Department of Radio Science and Engineering, Chungnam National University)
  • Received : 2012.02.14
  • Accepted : 2012.02.15
  • Published : 2012.02.29

Abstract

In this paper, a Ka-band 8 W power amplifier module with WR-28 waveguide input and output ports is implemented and measured using four 2 W power amplifier modules and 4:1 waveguide power combiners with high isolation of 25 dB at 35 GHz. The 2 W power amplifier modules are fabricated using waveguide-to-microstrip transitions and show output power of 32.5~33.3 dBm and power gain of 26.9~28.7 dB at 35 GHz. Four 2 W power amplifier modules are combined through 4:1 waveguide power combiners with resistive septum and the combined power shows 39.0 dBm(8 W) under 6 V drain bias and 39.6 dBm(9.1 W) under 6.5 V drain bias at 35 GHz.

Keywords

Ka-Band;Waveguide Combiner;Resistive Septum;Waveguide Transition;Power Amplifier

Acknowledgement

Supported by : LIG넥스원

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