Title :
A 45/46/34% PAE linear polar transmitter for EDGE/WCDMA/Mobile-WiMax
Author :
Choi, Jinsung ; Kim, Dongsu ; Kang, Daehyun ; Jun, Myoungsu ; Jin, Boshi ; Park, Jungmin ; Kim, Bumman
Author_Institution :
Dept. of Electr. Eng., Pohang Univ. of Sci. & Technol., Pohang, South Korea
Abstract :
A polar transmitter supporting multi-standard applications through 0.13 um CMOS hysteretic-controlled hybrid switching amplifier is presented with 1.88 GHz HBT class-F PA operating with novel envelope shaping method for high efficiency and linearity over broad output power range. It achieves the PAE of 45/46/34.3% at the average output power of 27.8/29/23.9 dBm for EDGE/WCDMA/mobile-WiMax, respectively, while satisfying the linearity specification without any digital pre-distortion technique. There are about 7% and 3% improvements of the overall PAE for EDGE and WCDMA, respectively, through the adaptive multi-mode operation.
Keywords :
CMOS integrated circuits; UHF power amplifiers; WiMax; cellular radio; code division multiple access; heterojunction bipolar transistors; radio transmitters; CMOS hysteretic-controlled hybrid switching amplifier; EDGE; HBT class-F PA; PAE linear polar transmitter; WCDMA; adaptive multimode operation; frequency 1.88 GHz; mobile-WiMax; size 0.13 mum; wideband code division multiple access; Bonding; Broadband amplifiers; Circuits; Hysteresis; Linearity; Multiaccess communication; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Transmitters; Polar transmitter; envelope-tracking; multi-mode; power amplifiers;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5165721
