Title :
A DC to 2GHz downconverter with image rejection and high blocker tolerance for cognitive radios
Author_Institution :
Semtech Corp., Irvine, CA, USA
Abstract :
An image reject RF filter for wideband receivers is described. This image reject RF filter relies on a complex bandpass filter that can be tuned accurately over a wide frequency. Operation of this filter is demonstrated in a 0.13um CMOS technology and shown to operate from DC to 2GHz. The filter is shown to provide a minimum image rejection ratio of 62 dBc, while providing an OIP3 of at least +30dBm over the frequency band and high blocker level tolerance.
Keywords :
CMOS integrated circuits; UHF filters; band-pass filters; cognitive radio; radio receivers; 0.13um CMOS technology; cognitive radios; complex bandpass filter; downconverter; frequency band; high blocker level tolerance; image reject RF filter; minimum image rejection ratio; wideband receivers; Band-pass filters; CMOS integrated circuits; Linearity; Mixers; Radio frequency; Receivers; Resonator filters; RF Filter; complex filters; image rejection; wideband receivers;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2014 IEEE
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4799-2298-7
DOI :
10.1109/RWS.2014.6830126
