Title :
A phase correction technique applied to 700MHz — 6GHz complex demodulators in multi-band wireless systems
Author :
Ziv, R. ; Karpel, E. ; Spiegel, S.J.
Author_Institution :
Sch. of Eng., Bar Ilan Univ., Ramat Gan
Abstract :
A broadband IQ phase imbalance correction technique applied to complex demodulators is presented. The phase correction range of plusmn5 degrees and accuracy of 0.3 degrees were obtained with 4 bit resolution. The applications of the broadband IQ phase imbalance correction scheme are compensation of the phase errors originated in the LO poly-phase networks and image rejection mixers with image rejection above 40 dB. The power consumption of the IQ phase imbalance correction technique 14 mW and 20 mW were obtained in the 0.7 GHz - 4 GHz and 4 GHz - 6 GHz frequency ranges respectively in 0.18 mum CMOS technology.
Keywords :
CMOS integrated circuits; MMIC mixers; UHF integrated circuits; UHF mixers; demodulators; radio networks; LO poly-phase networks; broadband IQ phase imbalance correction technique; demodulators; frequency 700 MHz to 6 GHz; image rejection mixers; multiband wireless systems; phase correction technique; power 14 mW; power 20 mW; size 0.18 mum; CMOS technology; Demodulation; Energy consumption; Frequency conversion; Frequency synthesizers; GSM; Multiaccess communication; Phase modulation; Radio transceivers; Silicon;
Conference_Titel :
Microwaves, Communications, Antennas and Electronic Systems, 2008. COMCAS 2008. IEEE International Conference on
Conference_Location :
Tel-Aviv
Print_ISBN :
978-1-4244-2097-1
Electronic_ISBN :
978-1-4244-2098-8
DOI :
10.1109/COMCAS.2008.4562805
