Title :
A CMOS 5 GHz phase-compensated quadrature coupler
Author :
Ozis, Dicle ; Allstot, David J.
Author_Institution :
Washington Univ., Seattle, WA, USA
Abstract :
A quadrature hybrid coupler implemented in a 0.18 μm 6-metal RF CMOS process is presented. The 3 dB coupler uses on-chip lumped passive elements and provides a 90° phase shift at 5.4 GHz. It exhibits less than 0.7° phase and 0.3 dB amplitude I/Q mismatches over a bandwidth of 220 MHz. The measured figure-of-merit is 45 dB at 5.4 GHz.
Keywords :
CMOS integrated circuits; MMIC; coupled circuits; lumped parameter networks; 0.18 mum; 5.4 GHz; RF CMOS process; on-chip lumped passive elements; phase-compensated quadrature coupler; Bandwidth; CMOS process; Coupling circuits; Degradation; Distributed parameter circuits; Integrated circuit measurements; Microwave communication; Narrowband; Radio frequency; Transformers;
Conference_Titel :
Radio and Wireless Symposium, 2006 IEEE
Print_ISBN :
0-7803-9412-7
DOI :
10.1109/RWS.2006.1615092
