DocumentCode
2196652
Title
A new adaptive double envelope feedback (ADEF) linearizer for mobile radio power amplifiers
Author
Cardinal, J.-S. ; Ghannouchi, F.M.
Author_Institution
Microwave Res. Lab., Ecole Polytech. de Montreal, Que., Canada
fYear
1994
fDate
23-27 May 1994
Firstpage
573
Abstract
A new Adaptive Double Envelope Feedback (ADEF) linearizer using a voltage controllable phase shifter and a dynamic gate bias on a MESFET is developed and implemented on a class AB, one Watt amplifier. A two tone test at 1.7 GHz shows in-band intermodulation products of 40 dBc over a 10 dB dynamic range with a total two-tone power added efficiency of 32%.<>
Keywords
intermodulation; mobile radio systems; power amplifiers; solid-state microwave circuits; ultra-high-frequency amplifiers; 1 W; 1.7 GHz; 32 percent; MESFET; adaptive double envelope feedback; class AB amplifier; dynamic gate bias; dynamic range; in-band intermodulation products; linearizer; mobile radio power amplifiers; power added efficiency; two tone test; voltage controllable phase shifter; Adaptive control; Dynamic range; Linear feedback control systems; MESFETs; Phase shifters; Programmable control; Testing; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location
San Diego, CA, USA
ISSN
0149-645X
Print_ISBN
0-7803-1778-5
Type
conf
DOI
10.1109/MWSYM.1994.335486
Filename
335486
Link To Document