DocumentCode
2193042
Title
RF power amplifiers for portable communication applications
Author
Stengel, B. ; Nair, V.
Author_Institution
Land Mobile Products Res. Lab., Motorola Inc., Plantation, FL, USA
fYear
1994
fDate
23-27 May 1994
Firstpage
1623
Abstract
We review the requirements of a power amplifier used in portable communication applications. The talk time or battery life of a portable unit is directly related to the transmitter RF conversion efficiency. The introduction of GaAs MESFETs, HFETs, and HBTs into portable communications equipment increased the performance level of RF power functions. The effect is a significant improvement in DC to RF conversion efficiency over the previous bipolar RF power amplifiers. Circuit applications and trade-off of MESFETs, HFETs and HBTs for portable communication system is also discussed.<>
Keywords
heterojunction bipolar transistors; mobile radio systems; power amplifiers; radiofrequency amplifiers; DC to RF conversion efficiency; GaAs MESFETs; HBTs; HFETs; RF power amplifiers; battery life; portable communication applications; talk time; transmitter RF conversion efficiency; Batteries; Communication equipment; Gallium arsenide; HEMTs; MESFETs; MODFETs; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Transmitters;
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.1994.335262
Filename
335262
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