← 返回 JSSC 论文列表JSSC 2012第10期RF & Wireless0.25μm
A 2-GHz Highly Linear Ef ficient Dual-Mode BiCMOS Power Ampli fier Using a Reconfig
一种采用前馈辅助放大器技术的2GHz高效线性双模BiCMOS功率放大器。
0.25μm SiGe:C BiCMOS, 2.5V, 2GHz, 13dB增益, 23dBm Pout, 38% PAE, -41/-44dBc HD2/HD3
功率放大器线性化技术BiCMOS效率增强WiMAX
▸前馈辅助放大器技术提升线性度
▸可切换偏置和可重构输出匹配网络提高效率
▸片上包络检测器动态监测输入功率
Abstract
A highly linear, ef ficient, two-stage p ower ampli fier
for high-data-rate wireless applications is presented. The linearity
is greatly improved by adding an auxiliary ampli fier to the main
bipolar transistor ampli fier in a feed-forward approach to cancel
out the nonlinearity terms. The ef ficiency enhancement is achieved
using a switchable biasing and a recon figurable output-matching
network based on the available input pow er which is monitored by
an on-chip envelope detector. The PA is fabricat