Design of Continuous Class-B/J Power Amplifier Based on Mirrored Lowpass Filter Matching Structure

Guohua LIU; Huabang ZHONG; Cantianci GUO; Zhiqun CHENG

doi:10.1587/transele.2021ECS6010

Design of Continuous Class-B/J Power Amplifier Based on Mirrored Lowpass Filter Matching Structure

Guohua LIU, Huabang ZHONG, Cantianci GUO, Zhiqun CHENG

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Summary :

This paper proposes a methodology for designing broadband class B/J power amplifier based on a mirrored lowpass filter matching structure. According to this filter theory, the impedance of this design method is mainly related to the cutoff frequency. Series inductors and shunt capacitors filter out high frequencies. The change of input impedance with frequency is small in the passband. Which can suppress higher harmonics and expand bandwidth. In order to confirm the validity of the design method, a broadband high-efficiency power amplifier in the 1.3 - 3.9GHz band is designed and fabricated. Measurement results show that the output power is greater than 40.5dBm, drain efficiency is 61.2% - 70.8% and the gain is greater than 10dB.

Publication: IEICE TRANSACTIONS on Electronics Vol.E105-C No.4 pp.172-175

Publication Date: 2022/04/01

Publicized: 2021/10/21

Online ISSN: 1745-1353

DOI: 10.1587/transele.2021ECS6010

Type of Manuscript: BRIEF PAPER

Category: Electronic Circuits

Authors

Guohua LIU
  Hangzhou Dianzi University
Huabang ZHONG
  Hangzhou Dianzi University
Cantianci GUO
  Hangzhou Dianzi University
Zhiqun CHENG
  Hangzhou Dianzi University

Keyword

class-B/J, power amplifier, broadband, lowpass filter

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Guohua LIU, Huabang ZHONG, Cantianci GUO, Zhiqun CHENG, "Design of Continuous Class-B/J Power Amplifier Based on Mirrored Lowpass Filter Matching Structure" in IEICE TRANSACTIONS on Electronics, vol. E105-C, no. 4, pp. 172-175, April 2022, doi: 10.1587/transele.2021ECS6010.
Abstract: This paper proposes a methodology for designing broadband class B/J power amplifier based on a mirrored lowpass filter matching structure. According to this filter theory, the impedance of this design method is mainly related to the cutoff frequency. Series inductors and shunt capacitors filter out high frequencies. The change of input impedance with frequency is small in the passband. Which can suppress higher harmonics and expand bandwidth. In order to confirm the validity of the design method, a broadband high-efficiency power amplifier in the 1.3 - 3.9GHz band is designed and fabricated. Measurement results show that the output power is greater than 40.5dBm, drain efficiency is 61.2% - 70.8% and the gain is greater than 10dB.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2021ECS6010/_p

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@ARTICLE{e105-c_4_172,
author={Guohua LIU, Huabang ZHONG, Cantianci GUO, Zhiqun CHENG, },
journal={IEICE TRANSACTIONS on Electronics},
title={Design of Continuous Class-B/J Power Amplifier Based on Mirrored Lowpass Filter Matching Structure},
year={2022},
volume={E105-C},
number={4},
pages={172-175},
abstract={This paper proposes a methodology for designing broadband class B/J power amplifier based on a mirrored lowpass filter matching structure. According to this filter theory, the impedance of this design method is mainly related to the cutoff frequency. Series inductors and shunt capacitors filter out high frequencies. The change of input impedance with frequency is small in the passband. Which can suppress higher harmonics and expand bandwidth. In order to confirm the validity of the design method, a broadband high-efficiency power amplifier in the 1.3 - 3.9GHz band is designed and fabricated. Measurement results show that the output power is greater than 40.5dBm, drain efficiency is 61.2% - 70.8% and the gain is greater than 10dB.},
keywords={},
doi={10.1587/transele.2021ECS6010},
ISSN={1745-1353},
month={April},}

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TY - JOUR
TI - Design of Continuous Class-B/J Power Amplifier Based on Mirrored Lowpass Filter Matching Structure
T2 - IEICE TRANSACTIONS on Electronics
SP - 172
EP - 175
AU - Guohua LIU
AU - Huabang ZHONG
AU - Cantianci GUO
AU - Zhiqun CHENG
PY - 2022
DO - 10.1587/transele.2021ECS6010
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E105-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 2022
AB - This paper proposes a methodology for designing broadband class B/J power amplifier based on a mirrored lowpass filter matching structure. According to this filter theory, the impedance of this design method is mainly related to the cutoff frequency. Series inductors and shunt capacitors filter out high frequencies. The change of input impedance with frequency is small in the passband. Which can suppress higher harmonics and expand bandwidth. In order to confirm the validity of the design method, a broadband high-efficiency power amplifier in the 1.3 - 3.9GHz band is designed and fabricated. Measurement results show that the output power is greater than 40.5dBm, drain efficiency is 61.2% - 70.8% and the gain is greater than 10dB.
ER -