Title :
Wideband. CMOS integrated RF combiner for LINC transmitters
Author :
Hamedi-Hagh, S. ; Salama, C.A.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
The design of a novel wideband RF signal combiner suitable for LINC transmitters in CMOS technologies is presented in this paper. Compared to the conventional narrowband design, the wideband architecture achieves a small reflection coefficient (less than 0.3) suitable for wideband spread spectrum multi-user mobile systems. A 0.18 /spl mu/m CMOS wideband signal combiner, designed to add two 8GHz signals and deliver 1.5W to the antenna from 1V class F power amplifiers, is presented and compared to a narrowband design.
Keywords :
CMOS integrated circuits; mobile radio; radio transmitters; radiofrequency integrated circuits; spread spectrum communication; 0.18 micron; 1.5 W; 8 GHz; CMOS technology; LINC transmitter; RF signal combiner; antenna; class F power amplifier; reflection coefficient; spread spectrum multi-user mobile system; wideband architecture; Broadband amplifiers; Broadband antennas; CMOS technology; Narrowband; Radio frequency; Reflection; Signal design; Spread spectrum communication; Transmitters; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1211029
