Title :
A complex image rejection circuit with sign detection only
Author :
Lerstaveesin, S. ; Bang-Sup Song
Author_Institution :
California Univ., San Diego, CA
Abstract :
The orthogonal property of I/Q channels is applied to adaptively correct path gain and phase errors using four sign detectors. A complex baseband S/H chip achieves an image rejection of 65dB while sampling at 40MS/s. The chip occupies 0.8times0.45mm2 in a 0.18mum CMOS process and consumes 23mW at 1.8V
Keywords :
CMOS integrated circuits; image sampling; sample and hold circuits; 0.18 micron; 1.8 V; 23 mW; CMOS process; I/Q channels; baseband S/H chip; image-rejection circuit; orthogonal property; phase errors; sign detection; sign detectors; Analog-digital conversion; Capacitors; Circuits; Detectors; Digital signal processing; Feedback; Filters; Image resolution; Signal processing algorithms; Signal resolution;
Conference_Titel :
Solid-State Circuits Conference, 2006. ISSCC 2006. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0079-1
DOI :
10.1109/ISSCC.2006.1696238
