A high-performance W-band uniplanar subharmonic mixer

Author

Raman, Sanjay ; Rucky, Frank ; Rebeiz, Gabriel M.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

45

Issue

6

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

955

Lastpage

962

Abstract

A uniplanar subharmonic mixer has been implemented in coplanar waveguide (CPW) technology. The circuit is designed to operate at RF frequencies of 92-96 GHz, IF frequencies of 2-4 GHz, and LO frequencies of 45-46 GHz. Total circuit size excluding probe pads and transitions is less than 0.8 mm ×1.5 mm. The measured minimum single-sideband (SSB) conversion loss is 7.0 dB at an RF of 94 GHz, and represents state-of-the-art performance for a planar W-band subharmonic mixer. The mixer is broad-band with a SSB conversion loss of less than 10 dB over the 83-97-GHz measurement band. The measured LO-RF isolation is better than -40 dB for LO frequencies of 45-46 GHz. The double-sideband (DSB) noise temperature measured using the Y-factor method is 725 K at an LO frequency of 45.5 GHz and an IF frequency of 1.4 GHz. The measured data agrees well with the predicted performance using harmonic-balance analysis (HBA). Potential applications are millimeter-wave receivers for smart munition seekers and automotive-collision-avoidance radars

Keywords

MIMIC; MMIC mixers; coplanar waveguides; harmonic analysis; losses; millimetre wave mixers; millimetre wave receivers; 2 to 4 GHz; 45 to 46 GHz; 7.0 dB; 92 to 96 GHz; DSB noise temperature; LO-RF isolation; SSB conversion loss; W-band; Y-factor method; automotive-collision-avoidance radars; circuit size; coplanar waveguide; harmonic-balance analysis; millimeter-wave receivers; uniplanar subharmonic mixer; Amplitude modulation; Circuits; Coplanar waveguides; Frequency measurement; Loss measurement; Mixers; Performance loss; Probes; Radio frequency; Temperature measurement;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.588609

Filename

588609