Title :
A broad-band quadrature-modulator in standard 0.13μm CMOS
Author :
Tiiliharju, E. ; Halonen, Kari
Author_Institution :
Electronic Circuit Design Laboratory, Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finland
Abstract :
A polyphase ltering topology is proposed which uses parallel switchable RC-networks for accurate broadband 90" phasing. A 0.13 μm CMOS prototype using the quadrature-generation network in a direct-conversion quadrature-modulator achieves measured image-rejection ratio of -39dBc or better in 0.6-2.5GHz while consuming only 66mW from a 2.2V single supply.
Keywords :
Amplitude modulation; CMOS technology; Circuit topology; Clocks; Electronic circuits; Frequency; Laboratories; Microwave generation; Network topology; Prototypes;
Conference_Titel :
Norchip Conference, 2004. Proceedings
Conference_Location :
Oslo, Norway
Print_ISBN :
0-7803-8510-1
DOI :
10.1109/NORCHP.2004.1423810
