Title :
A novel EER transmitter using two-point delta-sigma modulation scheme for WLAN and 3G applications
Author :
Kang-Chun Peng ; Je-Kuan Jau ; Tzyy-Sheng Horng
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaoshiung, Taiwan
Abstract :
A novel transmitter architecture is proposed for wireless local area networks (WLAN) and 3/sup rd/ generation (3G) mobile applications. The transmitter is based on the envelope elimination and restoration (EER) architecture applied with two-point delta-sigma modulator (TPDSM). It can integrate digital modulators and power amplifiers without mixers effectively. In addition, the power amplifier can deal with non-constant envelope modulations like QPSK highly efficiently.
Keywords :
delta-sigma modulation; mobile radio; power amplifiers; quadrature phase shift keying; radio transmitters; radiofrequency amplifiers; wireless LAN; 3G mobile radio; EER transmitter; QPSK; digital modulator; envelope elimination and restoration architecture; nonconstant envelope modulation; power amplifier; two-point delta-sigma modulation; wireless local area network; Bandwidth; Baseband; Delta modulation; Delta-sigma modulation; Phase locked loops; Phase modulation; Pulse modulation; Radiofrequency amplifiers; Transmitters; Wireless LAN;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1012175
