Title :
Wideband Image-Rejection Circuit for Low-IF Receivers
Author :
Maeda, Koji ; Hioe, Willy ; Kimura, Yasuyuki ; Tanaka, Satoshi
Author_Institution :
Hitachi, Tokyo
Abstract :
A wideband image-rejection circuit for GSM/EDGE low-IF receivers includes a reference signal source and digital correction circuit that compensate I/Q gain, phase, and frequency response mismatch. The chip integrates an LNA, mixers, PGAs, LPFs, and fractional-N synthesizer in a 0.25mum BiCMOS process and achieves 50dB IRR over the entire signal bandwidth at 200kHz IF
Keywords :
BiCMOS integrated circuits; cellular radio; frequency synthesizers; low noise amplifiers; radio receivers; 0.25 micron; 200 kHz; BiCMOS process; EDGE; GSM; digital correction circuit; fractional-N synthesizer; frequency response mismatch; image-rejection ratio; low noise amplifiers; low-IF receivers; reference signal source circuit; Circuit testing; Degradation; Electronics packaging; Finite impulse response filter; Frequency; GSM; Interference; Noise robustness; Power harmonic filters; Wideband;
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.2006.1696249
