An L-band high efficiency and low distortion power amplifier module using an HPF/LPF combined interstage matching circuit

K. Mori, S. Shinjo, F. Kitabayashi, A. Ohta, Y. Ikeda, O. Ishida
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引用次数: 11

Abstract

A three stage high power amplifier (HPA) module for wide-band CDMA handy phones using an HPF/LPF combined interstage matching circuit has been developed. An HPF/LPF combined interstage matching circuit can realize both the optimum load impedance of the second stage FET and the optimum source impedance of the third stage FET to achieve high efficiency. The developed three stage HPA module, size of which is 0.08cc (7 mm/spl times/7 mm./spl times/1.7 mm), achieves a power-added efficiency of 43.9% and an output power of 27.1 dBm with an adjacent channel leakage power (ACP) of -38 dBc at 1.95 GHz.
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一种l波段高效低失真功率放大模块,采用HPF/LPF级间匹配组合电路
设计了一种基于高功率放大器/低功率放大器级间匹配电路的宽带CDMA手机三级高功率放大器(HPA)模块。HPF/LPF组合级间匹配电路可以同时实现第二级场效应管的最佳负载阻抗和第三级场效应管的最佳源阻抗,从而实现高效率。所开发的三级HPA模块,尺寸为0.08cc (7 mm/spl倍/7 mm./spl倍/1.7 mm),在1.95 GHz时实现了43.9%的功率增加效率和27.1 dBm的输出功率,相邻通道泄漏功率(ACP)为-38 dBc。
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