ISSTT Proceedings

ISSTT Proceedings

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Low Noise 500-700 GHz Receivers Using Single-Diode Harmonic Mixers

Authors:
Neal R. Erickson
Abstract:
A second harmonic mixer has been built using a single Schottky diode achieving an overall noise temperature only 25% higher than that of a fundamental mixer at the same frequency. This mixer has been built in two models for center frequencies near 600 GHz. These mixers are pumped by frequency multiplied InP Gunn oscillators providing about 2 mW output. The theory of mixer noise and conversion loss agree fairly well with the experimental results. The best results are a receiver noise temperature of 5300 K SSB at 550 and 665 Ghz. This mixer design will be used in receivers for 490 and 550 GHz in the Submillimeter Wave Astronomy Satellite.
Categories:
Receivers, Systems
Year:
1990
Session:
4
Full-text:
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Page Number(s):
399-408