Title :
A 24-GHz CMOS Passive Subharmonic Mixer/Downconverter for Zero-IF Applications
Author :
Kodkani, Rahul M. ; Larson, Lawrence E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California at San Diego, La Jolla, CA
fDate :
5/1/2008 12:00:00 AM
Abstract :
The design and implementation of a 24-GHz subharmonic-mixer-based downconverter based on a multiphase local oscillator (LO) is presented. Fabricated in a 0.13-mum CMOS process, the downconverter includes a pre-amplifier and an IF buffer and consumes 14.4 mW from a 1.6-V supply. The quadrature LO buffer consumes 15 mA at 1.2 V. The circuit includes a single-ended to differential phase splitter for the LO. The downconverter has a conversion gain of 3.2 dB and double-sideband noise figure of 10 dB. The measured input referred 1-dB compression point is -12.7 dBm. DC offsets were less than 2 mV.
Keywords :
CMOS integrated circuits; mixers (circuits); oscillators; CMOS passive subharmonic mixer/downconverter; CMOS process; IF buffer; current 15 mA; differential phase splitter; frequency 24 GHz; gain 3.2 dB; multiphase local oscillator; noise figure 10 dB; power 14.4 mW; quadrature LO buffer; size 0.13 mum; voltage 1.2 V; voltage 1.6 V; zero-IF application; 24 GHz; CMOS; direct-conversion receiver; millimeter-wave integrated circuits; passive mixer; subharmonic mixer (SHM);
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2008.920177
