Title :
Wideband CMOS integrated RF combiner for LINC transmitters
Author :
Hamedi-Hagh, Sotoudeh ; Salama, C. André 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 0.18μm 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 analogue integrated circuits; cellular radio; power combiners; radio transmitters; spread spectrum communication; 0.18 micron; 1 V; 1.5 W; 8 GHz; CMOS; LINC transmitters; RF combiner; antenna; class F power amplifiers; reflection coefficient; spread spectrum multi-user mobile systems; wideband architecture; Broadband amplifiers; Broadband antennas; CMOS technology; Narrowband; Radio frequency; Reflection; Signal design; Spread spectrum communication; Transmitters; Wideband;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2003 IEEE
Print_ISBN :
0-7803-7694-3
DOI :
10.1109/RFIC.2003.1214007
