Design of a High Power and High Gain Two-Stage Doherty Power Amplifier

고 출력 고 이득 2단 도허티 전력증폭기의 설계

  • Ghim, Jae-Gon (Dept. of Radio Science & Engineering, Kwangwoon University) ;
  • Kim, Ji-Yeon (Dept. of Radio Science & Engineering, Kwangwoon University) ;
  • Lee, Dong-Heon (Dept. of Radio Science & Engineering, Kwangwoon University) ;
  • Kim, Jong-Heon (Dept. of Radio Science & Engineering, Kwangwoon University)
  • 김재곤 (광운대학교 전파공학과) ;
  • 김지연 (광운대학교 전파공학과) ;
  • 이동헌 (광운대학교 전파공학과) ;
  • 김종헌 (광운대학교 전파공학과)
  • Published : 2006.11.30

Abstract

A high power and high gain Doherty amplifier is designed by using embedded driver amplifiers in the final stage. The operational characteristics of a two-stage Doherty amplifier are analyzed, as a function of the two-stage peaking amplifier gate biases. The driver stages and final output stages are implemented using two single-ended MRF21045s and a single push-pull packaged MRF5P21180, respectively. This two-stage Doherty amplifier demonstrated 27 dB gain with a PAE of 23 % at 15 W average output power.

Keywords

Two-Stage Doherty;Embedded Drive Stage;Peaking Amplifier;Gate Bias

References

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