Title :
Digitally assisted CMOS mixer with tight conversion-gain flatness
Author :
Mondal, Shrijeet ; Jiangtao Xu ; Saavedra, Carlos E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´s Univ., Kingston, ON, Canada
Abstract :
A digital-assist technique is experimentally demonstrated that tightens the conversion-gain (CG) flatness of a CMOS mixer from a baseline level of ±1.5 dB over a 1-12 GHz span to ±1.0 dB over a 1-15 GHz span. The method uses a microcontroller to find the optimal bias point of the mixer that produces the desired CG flatness.
Keywords :
CMOS integrated circuits; UHF mixers; field effect MMIC; microcontrollers; microwave mixers; digitally assisted CMOS mixer; frequency 1 GHz to 15 GHz; microcontroller; optimal bias point; tight conversion-gain flatness;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.1929
