Title :
Blocker cancelling LNA with integrated bandpass feedback stage
Author :
Kwon, Ik-Soo ; Oh, Dan
Author_Institution :
Dept. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea
Abstract :
A CMOS wideband low-noise amplifier (LNA) with an integrated bandpass feedback stage for achieving blocker cancellation is described. The proposed blocker cancellation technique involves the use of an integrated tunable bandpass feedback stage to produce a notch for the blocker, eliminating the need for an off-chip SAW filter. The prototype LNA is fabricated in a 0.13 m CMOS process. The LNA with the bandpass feedback stage achieves a blocker rejection of 37 dB, and it draws a current of 20.6 mA from a 1.2 V power supply.
Keywords :
CMOS integrated circuits; feedback; low noise amplifiers; surface acoustic wave filters; wideband amplifiers; CMOS process; CMOS wideband low-noise amplifier; blocker cancellation; blocker cancelling LNA; current 20.6 mA; integrated bandpass feedback stage; integrated tunable bandpass feedback stage; off-chip SAW filter; size 0.13 mum; voltage 1.2 V;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.1619
