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A 4464-GHz mmWave Broadband Linear Doherty PA in Silicon With Quadrature Hybrid
提出一种宽带、高效且线性的毫米波Doherty功率放大器，采用正交混合器和非福斯特阻抗调谐器。
44-64 GHz, 18.5-21.5 dBm Psat, 峰值效率26%-34.7%, 6dB回退效率14%-23.2%
毫米波Doherty功率放大器正交混合器非福斯特调谐器线性度
▸正交混合器与非福斯特阻抗调谐器结合
▸隔离端口调谐器设计避免非线性影响
▸发射极跟随器类C偏置网络提升线性度
Abstract
The proliferation of millimeter-wave (mmWave)
bands across 24–90 GHz and the strict spectral efficiency
requirements demand future transmitter front ends to operate
across multiple bands with simultaneously back-off efficiency and
high linearity—characteristics that typically trade off strongly
with each other. In this article, we propose a simultaneously
broadband, back-off efficient and linear mmWave Doherty power
amplifier (PA) architecture with a quadrature hybrid, and a
non-Foster inspired impe