Title :
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
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;
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
DOI :
10.1109/MCS.1996.506311
