Dual-band switching Doherty power amplifier using phase shifter composed of PIN diode

Jun Chul Park, Jong Gwan Yook, Yong Duck Kim, Chun Hee Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper, a new method for improvement of the efficiency of Doherty power amplifier (PA) at dual-frequencies is presented. The structure of the conventional Doherty PA using equal LDMOS devices for main Class-AB and peaking Class-C amplifiers is designed. Compensation line with phase shifter composed of PIN diode is adapted and demonstrated experimentally for removing reactance components of the output impedance at each frequency. Adequate output phase of the Doherty PA at each frequency is adjusted using switching operation of PIN diode. In order to evaluate the switching performance of the proposed method, measurements have been carried out at two sample frequencies (2.1 GHz and 2.2 GHz). According to the on (2.1 GHz) and off-state (2.2 GHz) of PIN diode, compensation line adjusts exact load impedance at each frequency. The proposed 100 W Doherty PA provides power added efficiency (PAE) over 47% at 6-dB back-off power region (44 dBm). At 2.1 GHz, Doherty PA at on-state shows about 5% enhancement of PAE comparison with Doherty PA at off-state.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2011
Subtitle of host publication"Wave to the Future", EuMW 2011, Conference Proceedings - 6th European Microwave Integrated Circuit Conference, EuMIC 2011
Pages300-303
Number of pages4
Publication statusPublished - 2011 Dec 1
Event14th European Microwave Week 2011: "Wave to the Future", EuMW 2011 - 6th European Microwave Integrated Circuit Conference, EuMIC 2011 - Manchester, United Kingdom
Duration: 2011 Oct 102011 Oct 11

Publication series

NameEuropean Microwave Week 2011: "Wave to the Future", EuMW 2011, Conference Proceedings - 6th European Microwave Integrated Circuit Conference, EuMIC 2011

Other

Other14th European Microwave Week 2011: "Wave to the Future", EuMW 2011 - 6th European Microwave Integrated Circuit Conference, EuMIC 2011
CountryUnited Kingdom
CityManchester
Period11/10/1011/10/11

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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    Park, J. C., Yook, J. G., Kim, Y. D., & Lee, C. H. (2011). Dual-band switching Doherty power amplifier using phase shifter composed of PIN diode. In European Microwave Week 2011: "Wave to the Future", EuMW 2011, Conference Proceedings - 6th European Microwave Integrated Circuit Conference, EuMIC 2011 (pp. 300-303). [6102885] (European Microwave Week 2011: "Wave to the Future", EuMW 2011, Conference Proceedings - 6th European Microwave Integrated Circuit Conference, EuMIC 2011).