| Author: | Chen, Hanchao |
| Title: | Wideband continuous-mode inverse Class-F power amplifiers for modern wireless communication |
| Advisors: | Zhou, Xinyu (EEE) |
| Degree: | M.Sc. |
| Year: | 2025 |
| Department: | Department of Electrical and Electronic Engineering |
| Pages: | ix, 50 pages : color illustrations |
| Language: | English |
| Abstract: | Over the past decade, mobile communication traffic has grown rapidly due to increased smart device usage. The 5G standard addresses capacity demands. Frequency bands remain crucial for reducing infrastructure challenges. In 5G systems, power amplifiers (PAs) must provide high efficiency across wide bandwidths to reduce power consumption, increase data rates, and minimize interference. This thesis presents the design, fabrication, and experimental evaluation of a single-stage continuous-mode inverse Class-F (CCF⁻¹) PA operating from 2.1 GHz to 3.4 GHz in the 5G FR1 band. To balance high efficiency and wide bandwidth, the research uses gallium nitride (GaN) high electron mobility transistors (HEMTs) and optimizes harmonic impedances for waveform control. A step matching network for impedance control and multi-harmonic control techniques ensure high efficiency across the band. Unlike traditional methods, this approach adjusts multi-harmonic impedances for high-efficiency operation. The proposed CCF⁻¹ PA achieves output power of 41.3–42.5 dBm, drain efficiency (DE) of 70.6%–84.7%, and power-added efficiency (PAE) of 64.3%–78.4% at P3dB. This work has been published at the 2025 IEEE MTT-S International Wireless Symposium. Future work will focus on optimizing harmonic control technique and exploring advanced architectures to enhance PA performance. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 8317.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 6.28 MB | Adobe PDF | View/Open |
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