Title :
A 6W Uneven LDMOS Doherty Power Amplifier With High Efficiency for GSM900 Base Stations
Author :
Bathich, Khaled ; Sayed, Ahmed ; Boeck, Georg
Author_Institution :
Microwave Eng. Lab., Berlin Univ. of Technol., Berlin
Abstract :
In this paper, a 6W uneven LDMOS Doherty power amplifier (DPA), designed for GSM900 base stations, which implement phased antenna array transmission, is presented. The designed Doherty PA can deliver a maximum power of 6.5W. A high drain efficiency of eta=64% (PAE=58%) is measured. The efficiency is maintained above eta=43% (PAE=37%), over 6-dB output backoff, and above eta=31% (PAE=29%), over 9-dB output backoff, related to the maximum (saturated) power.
Keywords :
MIS devices; antenna phased arrays; power amplifiers; radiotelephony; GSM900 base stations; drain efficiency; output backoff; phased antenna array transmission; power 6 W; uneven LDMOS Doherty Power Amplifier; Base stations; High power amplifiers; Impedance; Microwave amplifiers; Microwave antenna arrays; Phase transformers; Phased arrays; Radio frequency; Transmitters; Wireless communication; Doherty PA; Si LDMOS; efficiency enhancement;
Conference_Titel :
Microwave Conference, 2009 German
Conference_Location :
Munich
Print_ISBN :
978-3-9812668-0-1
Electronic_ISBN :
978-3-8007-3150-3
DOI :
10.1109/GEMIC.2009.4815870
