ISSTT Proceedings

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A W-band HEMT based power amplifier module for millimeter-Wave LO multipliers

Authors:
Imran Mehdi, Todd Gaier, Jacob Kooi, Bert Fujiwara, Richard Lai
Abstract:
We report on the performance of power amplifiers as local oscillator drivers for millimeter and submillimeter-wave heterodyne receivers. The noise properties of the MM1C amplifier in multiplied local oscillator chains are characterized by pumping a low noise superconductor-insulator-superconductor double slot heterodyne mixer at 386 GHz in the laboratory. A more sensitive measurement of noise contribution from the amplifier was performed with a 278 Gliz SIS waveguide receiver at the Caltech Submillimeter-Wave Observatory by means of astronomical observations. It is concluded that the MMIC amplifier does not add noise to the radiometer system.
Categories:
Sources
Year:
1998
Session:
11
Full-text:
Download a PDF of this paper.
Page Number(s):
573-578