Title :
A low-IF CMOS double quadrature mixer exhibiting 58 dB of image rejection for silicon TV tuners
Author :
Notten, Marc ; Van Sinderen, Jan ; Seneschal, Francois ; Mounaim, Faycai
Author_Institution :
Philips Res., Eindhoven, Netherlands
Abstract :
To ease full integration of a TV-receiver, a low-IF architecture has been developed. To cancel the adjacent channel at the image of the mixer, a quadrature mixer can be used with a limited image rejection of about 40 dB, which is 10 dB below the target of more than 50 dB. Therefore, a low-IF passive CMOS double quadrature mixer has been implemented which achieves high dynamic range and more than 58 dB of image rejection over a wide frequency range. The image rejection is now limited by the mismatch in the mixers and the IF polyphase filter.
Keywords :
CMOS analogue integrated circuits; UHF filters; UHF integrated circuits; UHF mixers; adjacent channel interference; circuit tuning; television receivers; Si; TV tuners; TV-receiver; adjacent channel image cancellation; analog polyphase filter; image rejection; low-IF double quadrature mixer; low-IF receivers; mixer dynamic range; mixer mismatch; passive CMOS mixer; quadrature down-conversion; Cable TV; Information filtering; Information filters; Mixers; Modems; RF signals; Radio frequency; Silicon; Tuners; US Department of Transportation;
Conference_Titel :
Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE
Print_ISBN :
0-7803-8983-2
DOI :
10.1109/RFIC.2005.1489621
