Monolithic single FET mixers with coplanar technology to convert between V and C band

Author

Rosario, M.J. ; Bernardino, J. ; Fortes, F. ; Kulke, R. ; Sporkman, T. ; Freire, J.C.

Author_Institution

Inst. de Telecom., Inst. Superior Tecnico, Lisbon, Portugal

fYear

1996

fDate

17-19 June 1996

Firstpage

93

Lastpage

96

Abstract

In this paper the design of single FET coplanar mixers to convert signals between V and C band is presented. A step by step design technique was used, based on harmonic balance simulation. The mixer non-linear device is a PMHFET with a 0.15 /spl mu/m T-gate. Two different topologies were designed, fabricated and tested: cold mixer and drain mixer. The mixers were optimised for minimum conversion losses on the widest possible bandwidth in order to be used on a large number of applications. The experiments show: for the cold mixer, a conversion loss on a 8 GHz band in the range of 8 to 10 dB both as up and downconverter; and 2.5 dB on a 4 GHz band for the drain mixer as down converter.

Keywords

MMIC mixers; coplanar waveguides; field effect MIMIC; losses; millimetre wave mixers; 0.15 micron; 2.5 to 10 dB; C-band; EHF; PMHFET; SHF; T-gate; V-band; cold mixer topology; coplanar technology; design technique; downconverter; drain mixer topology; harmonic balance simulation; minimum conversion losses; monolithic single FET mixers; pseudomorphic HFET; upconverter; Bandwidth; Circuit topology; Costs; FETs; Fabrication; MMICs; Microstrip; Signal design; Telecommunications; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1996. Digest of Papers., IEEE 1996

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-3360-8

Type

conf

DOI

10.1109/MCS.1996.506311

Filename

506311