Title :
I/Q mismatch compensation in a 90nm low-IF CMOS receiver
Author :
Elahi, Imtinan ; Muhammad, Khurram ; Balsara, Poras T.
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
An I/Q mismatch compensation circuit for a low-IF GSM receiver implemented in a 90nm CMOS process is presented. A single-tap adaptive decorrelation technique is used with L1-norm inverse power measurement and gear-shifting circuits. An image rejection ratio in excess of 50dB is achieved allowing the receiver to use IF frequencies higher than half of the channel bandwidth.
Keywords :
CMOS integrated circuits; cellular radio; decorrelation; radio receivers; 90 nm; GSM receiver; I/Q mismatch compensation; L1-norm inverse power measurement; gear-shifting circuits; image rejection ratio; low-IF CMOS receiver; single-tap adaptive decorrelation; 1f noise; Adaptive filters; Circuit testing; Degradation; Filtering; Frequency; GSM; Instruments; Narrowband; Temperature;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1494109
