Design of a Novel High-Efficiency Class-F/E Power Amplifier

Akram Sheikhi; Jiteng Ma; Mark A Beach

doi:10.1109/ISCAS56072.2025.11044098

Design of a Novel High-Efficiency Class-F/E Power Amplifier

Akram Sheikhi, Jiteng Ma, Mark A Beach

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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Abstract

This paper introduces a compact Class-F/E power amplifier (PA) that eliminates the need for RF choke LRFC and incorporates a parallel resonant filter. The parallel resonant filter filters out the third harmonic of the switch current, thereby reducing the switch current stress on the PA. Additionally, design equations for calculating the component values are provided. To validate these equations, a prototype circuit was designed and simulated. At a operating frequency of 430 MHz, the simulated output power, drain efficiency, and gain of the prototype PA are 40.9 dBm, 79%, and 10.9 dB, respectively.

Original language	English
Title of host publication	2025 IEEE International Symposium on Circuits and Systems (ISCAS)
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Number of pages	5
ISBN (Electronic)	9798350356830
ISBN (Print)	9798350356847
DOIs	https://doi.org/10.1109/ISCAS56072.2025.11044098
Publication status	Published - 27 Jun 2025
Event	2025 IEEE International Symposium on Circuits and Systems (ISCAS 2025) - London, United Kingdom Duration: 25 May 2025 → 28 May 2025 https://2025.ieee-iscas.org/

Publication series

Name	IEEE International Symposium on Circuits and Systems Proceedings
Publisher	IEEE
ISSN (Print)	0271-4302
ISSN (Electronic)	2158-1525

Conference

Conference	2025 IEEE International Symposium on Circuits and Systems (ISCAS 2025)
Abbreviated title	ISCAS 2025
Country/Territory	United Kingdom
City	London
Period	25/05/25 → 28/05/25
Internet address	https://2025.ieee-iscas.org/

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Publisher Copyright:
© 2025 IEEE.

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10.1109/ISCAS56072.2025.11044098

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This is the accepted author manuscript (AAM) of the article which has been made Open Access under the University of Bristol's Scholarly Works Policy. The final published version (Version of Record) can be found on the publisher's website. The copyright of any third-party content, such as images, remains with the copyright holder.
Accepted author manuscript, 778 KBLicence: CC BY

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title = "Design of a Novel High-Efficiency Class-F/E Power Amplifier",

abstract = "This paper introduces a compact Class-F/E power amplifier (PA) that eliminates the need for RF choke LRFC and incorporates a parallel resonant filter. The parallel resonant filter filters out the third harmonic of the switch current, thereby reducing the switch current stress on the PA. Additionally, design equations for calculating the component values are provided. To validate these equations, a prototype circuit was designed and simulated. At a operating frequency of 430 MHz, the simulated output power, drain efficiency, and gain of the prototype PA are 40.9 dBm, 79\%, and 10.9 dB, respectively.",

author = "Akram Sheikhi and Jiteng Ma and Beach, \{Mark A\}",

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series = "IEEE International Symposium on Circuits and Systems Proceedings",

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Sheikhi, A, Ma, J & Beach, MA 2025, Design of a Novel High-Efficiency Class-F/E Power Amplifier. in 2025 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE International Symposium on Circuits and Systems Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2025 IEEE International Symposium on Circuits and Systems (ISCAS 2025), London, United Kingdom, 25/05/25. https://doi.org/10.1109/ISCAS56072.2025.11044098

Design of a Novel High-Efficiency Class-F/E Power Amplifier. / Sheikhi, Akram; Ma, Jiteng ; Beach, Mark A.
2025 IEEE International Symposium on Circuits and Systems (ISCAS). Institute of Electrical and Electronics Engineers (IEEE), 2025. (IEEE International Symposium on Circuits and Systems Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Design of a Novel High-Efficiency Class-F/E Power Amplifier

AU - Sheikhi, Akram

AU - Ma, Jiteng

AU - Beach, Mark A

PY - 2025/6/27

Y1 - 2025/6/27

N2 - This paper introduces a compact Class-F/E power amplifier (PA) that eliminates the need for RF choke LRFC and incorporates a parallel resonant filter. The parallel resonant filter filters out the third harmonic of the switch current, thereby reducing the switch current stress on the PA. Additionally, design equations for calculating the component values are provided. To validate these equations, a prototype circuit was designed and simulated. At a operating frequency of 430 MHz, the simulated output power, drain efficiency, and gain of the prototype PA are 40.9 dBm, 79%, and 10.9 dB, respectively.

AB - This paper introduces a compact Class-F/E power amplifier (PA) that eliminates the need for RF choke LRFC and incorporates a parallel resonant filter. The parallel resonant filter filters out the third harmonic of the switch current, thereby reducing the switch current stress on the PA. Additionally, design equations for calculating the component values are provided. To validate these equations, a prototype circuit was designed and simulated. At a operating frequency of 430 MHz, the simulated output power, drain efficiency, and gain of the prototype PA are 40.9 dBm, 79%, and 10.9 dB, respectively.

U2 - 10.1109/ISCAS56072.2025.11044098

DO - 10.1109/ISCAS56072.2025.11044098

M3 - Conference Contribution (Conference Proceeding)

SN - 9798350356847

T3 - IEEE International Symposium on Circuits and Systems Proceedings

BT - 2025 IEEE International Symposium on Circuits and Systems (ISCAS)

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 2025 IEEE International Symposium on Circuits and Systems (ISCAS 2025)

Y2 - 25 May 2025 through 28 May 2025

ER -

Design of a Novel High-Efficiency Class-F/E Power Amplifier

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