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Highly Linear High-Power 80211acax WLAN SiGe HBT Power Amplifiers With a Compact
本文设计了一种高线性度高功率SiGe HBT WLAN功率放大器，解决了电热效应带来的挑战。
22.5/23.6/23.2 dBm输出功率, 10.0/12.2/11.2% PAE, DEVM=-35dB
功率放大器SiGe HBT电热效应线性度WLAN
▸采用紧凑的四路输出变压器balun实现高效功率合成
▸利用多层金属化方案实现内置二次谐波短路
▸设计了具有温度补偿的动态偏置电路以减少记忆效应
Abstract
This article presents the design of a highly
linear high-power silicon–germanium (SiGe) heterojunction bipo-
lar transistor (HBT) 802.11ac/ax wireless local area net-
work (WLAN) power amplifiers (PAs). The challenges associated
with electrothermal effects on the dynamic operation of WLAN
PAs are first discussed. We then propose the design methods
that take into account the elect rothermal transient effect to
improve linear output power ( P
OUT) and dynamic error vector
magnitude (DEVM). A compact