← 返回 JSSC 论文列表JSSC 2021第2期RF & Wireless250-nm GaN-on-SiCNeural Network Accelerator
Unbalanced Power Amplifier An Architecture for Broadband Back-Off Efficiency Enhan
提出一种新型宽带功率放大器架构，通过不平衡设计提升回退效率，支持宽调制带宽。
32.2–34.3-dBm输出功率, 27%–37%峰值效率, 27%–40%回退效率, 4.5–6.5 GHz频率范围
宽带功率放大器回退效率Lange耦合器谐波匹配网络GaN-on-SiC工艺
▸使用Lange耦合器作为输入功率分配器和输出功率合成器
▸通过晶体管宽度比和耦合系数控制PA操作
▸采用宽带谐波匹配网络提高效率
Abstract
In this article, we present a new broadband power
amplifier (PA) architecture with a back-off efficiency enhance-
ment that supports very wide modulation bandwidths. The
unbalanced PA is composed of two cooperating sub-PAs using
the Lange couplers as input power splitter and output power
combiner. The PA operation is controlled by the transistors’
width ratio and coupling coefficients of the Lange couplers. The
output power back-off (OPBO) level is given by the transistors’
width ratio and coupling