DocumentCode
3412507
Title
Quad-band GSM/GPRS/EDGE polar loop transmitter
Author
Sowlati, Tirdad ; Rozenblit, D. ; Pullela, R. ; Koh, Dawn ; Ripley, David
Author_Institution
Skyworks, Irvine, CA, USA
fYear
2004
fDate
15-19 Feb. 2004
Firstpage
186
Abstract
An EDGE transmitter, using a non-linear GSM type PA, is presented. A dual feedback loop ensures robust performance even under VSWR variations. No isolator or external PA filtering is required. The EDGE spectral mask is met with an RMS EVM of <3% at 29 dBm at the antenna, corresponding to 2 dB above nominal maximum output power.
Keywords
BiCMOS analogue integrated circuits; UHF power amplifiers; cellular radio; circuit feedback; packet radio networks; radio transmitters; 0.35 micron; 150 mA; 1800 MHz; 900 MHz; BiCMOS process; EDGE spectral mask; GSM/GPRS/EDGE transmitter; VSWR variations; dual feedback loop; high efficiency nonlinear PA; phase feedback loop; polar loop transmitter; quad-band transmitter; Amplitude modulation; Feedback loop; GSM; Ground penetrating radar; Output feedback; Phase frequency detector; Phase modulation; Radio frequency; Transmitters; Voltage-controlled oscillators;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
ISSN
0193-6530
Print_ISBN
0-7803-8267-6
Type
conf
DOI
10.1109/ISSCC.2004.1332656
Filename
1332656
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