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Power Amplifier Module for Envelope Tracking WCDMA Base-Station Applications  

Jang, Byung-Jun (국민대학교 전자공학부 무선통신시스템연구실)
Moon, Jun-Ho ((주)필텍)
Publication Information
Journal of Satellite, Information and Communications / v.5, no.2, 2010 , pp. 82-86 More about this Journal
Abstract
In this paper, a power amplifier module for WCDMA base-station applications is designed and implemented using GaN field-effect transistors (FETs), which uses an envelope tracking bias system. The designed module consists of an high gain MMIC amplifier, a driver amplifier, a power amplifier, and bias circuits for envelope tracking applications. Especially, a FET bias sequencing circuit and two isolators are integrated for stable RF operations. All circuits are assembled within a single housing, so its dimension is just $17.8{\times}9.8{\times}2.0\;cm3$. Measured results show that the developed power amplifier module has good envelope tracking capability: the power-added efficiency of 35% at the output power range from 30dBm to 40dBm over a wide range of drain bias.
Keywords
power amplifier; WCDMA; base station; GaN; Envelope tracking; high efficiency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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