Year: 2024
Type: article
Abstract: This paper presents a novel feedback structure for a multi-octave power amplifier (PA). The topological prototype of this structure is the Bartworth low-pass filter (LPF). The passband of the LPF is designed to compensate the PA at the low performance band, enabling the bandwidth (BW) of the PA to be smoothly broadened. To verify the proposed theory, a PA is designed and fabricated using a 10-W GaN HEMT. Measurement results show that the PA operates over a multi-octave band from 0.5-3.0GHz, corresponding to a fractional bandwidth of 142.8%. This PA provides a drain efficiency (DE) of 60.2-80.2% and an output power (Pout) of 39.2-42.1dBm over the operating band.
Source: IEICE Electronics Express
Authors: Zheming Zhu, Zhiqun Cheng, Minshi Jia, Kun Wang, Bingxin Li, Zhenghao Yang, Baoquan Zhong
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Funder: Hangzhou Dianzi University
OpenAlex ID: W4403460963