DocumentCode
2025592
Title
An Unusual Microwave Mixer
Author
Tomassetti, G.
Author_Institution
Istituto di Radioastronomia, C.N.R., Via Irnerio 46, 40126 Bologna, Italy.
fYear
1986
fDate
8-12 Sept. 1986
Firstpage
754
Lastpage
759
Abstract
Some preliminary measurements on an unusual microwave mixer configuration are reported. The mixer employied a single gate, packaged GaAs FET in a novel coaxial mount. The L.O. power and the I.F. were fed to and taken from the drain while the input R.F. signal was connected to the gate. A conversion gain of 2 dB and 270K DSB "mixer" noise temperature were measured at X band. Cooling the unit to 60K, a "mixer" noise temperature of 80K was obtained across a 10% bandwidth. At K band a 3 dB conversion loss and 880K DSB noise temperature were measured. The latter figure dropped to l80K at cryogenic temperatures.
Keywords
Bandwidth; Coaxial components; Cooling; Gain measurement; Gallium arsenide; Microwave FETs; Microwave measurements; Noise measurement; Packaging; Temperature measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1986. 16th European
Conference_Location
Dublin, Ireland
Type
conf
DOI
10.1109/EUMA.1986.334283
Filename
4133766
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