Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method

Bowen Wei; Jie Shi; Xiaohu Fang; Xinyu Zhou; Qing Wang; Hongyu Yu

Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method

Bowen Wei, Jie Shi, Xiaohu Fang, Xinyu Zhou, Qing Wang, Hongyu Yu

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

This paper presents a new method that improves the stability of the C-band GaN power amplifier (PA) while maintaining high PA gain. It is well known that the electromagnetic (EM) coupling between the PA input and output matching network (MN) can degrade the PA stability. In this paper, an iteration method is used to monitor the design of the input MN to compensate the EM coupling and stabilize the whole PA, while the output MN is designed to improve the PA efficiency by carefully controlling the drain impedances at multiple harmonic frequencies. By using the proposed method, a 5.8GHz class-F power amplifier is designed, fabricated and measured. Experimental results reveals that the proposed PA archives a saturation output power of 38.2dBm, drain efficiency of 70.7% and gain of 13.5dB while maintaining a high stability factor over the entire frequency band.

Original language	English
Title of host publication	2022 IEEE Conference on Antenna Measurements and Applications (CAMA)
Publication status	Published - 5 Jan 2023

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title = "Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method",

abstract = "This paper presents a new method that improves the stability of the C-band GaN power amplifier (PA) while maintaining high PA gain. It is well known that the electromagnetic (EM) coupling between the PA input and output matching network (MN) can degrade the PA stability. In this paper, an iteration method is used to monitor the design of the input MN to compensate the EM coupling and stabilize the whole PA, while the output MN is designed to improve the PA efficiency by carefully controlling the drain impedances at multiple harmonic frequencies. By using the proposed method, a 5.8GHz class-F power amplifier is designed, fabricated and measured. Experimental results reveals that the proposed PA archives a saturation output power of 38.2dBm, drain efficiency of 70.7% and gain of 13.5dB while maintaining a high stability factor over the entire frequency band.",

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Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method. / Wei, Bowen; Shi, Jie; Fang, Xiaohu et al.
2022 IEEE Conference on Antenna Measurements and Applications (CAMA). 2023.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method

AU - Wei, Bowen

AU - Shi, Jie

AU - Fang, Xiaohu

AU - Zhou, Xinyu

AU - Wang, Qing

AU - Yu, Hongyu

PY - 2023/1/5

Y1 - 2023/1/5

N2 - This paper presents a new method that improves the stability of the C-band GaN power amplifier (PA) while maintaining high PA gain. It is well known that the electromagnetic (EM) coupling between the PA input and output matching network (MN) can degrade the PA stability. In this paper, an iteration method is used to monitor the design of the input MN to compensate the EM coupling and stabilize the whole PA, while the output MN is designed to improve the PA efficiency by carefully controlling the drain impedances at multiple harmonic frequencies. By using the proposed method, a 5.8GHz class-F power amplifier is designed, fabricated and measured. Experimental results reveals that the proposed PA archives a saturation output power of 38.2dBm, drain efficiency of 70.7% and gain of 13.5dB while maintaining a high stability factor over the entire frequency band.

AB - This paper presents a new method that improves the stability of the C-band GaN power amplifier (PA) while maintaining high PA gain. It is well known that the electromagnetic (EM) coupling between the PA input and output matching network (MN) can degrade the PA stability. In this paper, an iteration method is used to monitor the design of the input MN to compensate the EM coupling and stabilize the whole PA, while the output MN is designed to improve the PA efficiency by carefully controlling the drain impedances at multiple harmonic frequencies. By using the proposed method, a 5.8GHz class-F power amplifier is designed, fabricated and measured. Experimental results reveals that the proposed PA archives a saturation output power of 38.2dBm, drain efficiency of 70.7% and gain of 13.5dB while maintaining a high stability factor over the entire frequency band.

M3 - Conference article published in proceeding or book

BT - 2022 IEEE Conference on Antenna Measurements and Applications (CAMA)

ER -

Stability and Efficiency Enhancement of a C-band Class-F Power Amplifier Using a Coupling Compensation Method

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