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Design of a broadband high-efficiency power amplifier based on ring-resonant filter with compensation architecture and a series of continuous modes

Published online by Cambridge University Press:  30 May 2024

Sen Xu ,
JianFeng Wu Open the ORCID record for JianFeng Wu [Opens in a new window]  and
Xiang Chen
Sen Xu*
Affiliation:
College of Information Science and Technology, Zhejiang Shuren University, Hangzhou, China
JianFeng Wu
Affiliation:
College of Information Science and Technology, Zhejiang Shuren University, Hangzhou, China
Xiang Chen
Affiliation:
Hangzhou Chesheng Technology Company Limited, Hangzhou, China
*
Corresponding author: Sen Xu; Email: [email protected]
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Abstract

A systematic design approach is presented for the design of broadband high-efficiency power amplifiers (PAs) by combining an improved ring-resonant filter matching network with a series of continuous modes. The improved ring-resonant matching network presented can effectively enhance out-of-band attenuation and sharp roll-off characteristics by adding a compensation structure with parallel stub. To verify the proposed design theory, a 10-W GaN HEMT device is designed and fabricated. The test results indicate that from the operating frequency band of 0.55−3.3 GHz with a relative bandwidth of 142.9%, a saturated output power of 38.5−42 dBm, drain efficiency of 58.2−70.3%, and a gain of 8.5–12 dB can be achieved under 3 dB gain compression, indicating the rationality of the design theory.

Keywords

a series of continuous modes (SCMs)broadbandhigh-efficiencyimproved ring-resonant filter networkpower amplifiers (PAs)
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 7 , September 2024 , pp. 1125 - 1132
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Copyright
© The Author(s), 2024. Published by Cambridge University Press in association with The European Microwave Association.

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