Measurements with a Schottky-barrier waveguide mixer at 460 GHz

Details Measurements with a Schottky-barrier waveguide mixer at 460 GHz Measurements with a Schottky-barrier waveguide mixer at 460 GHz

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985infph..25..353k&link_type=abstract

(European Physical Society, International Conference on Infrared Physics, 3rd, Zurich, Switzerland, July 23-27, 1984) Infrared P

Physics

1

Electromagnetic Noise Measurement, Microwave Circuits, Mixing Circuits, Noise Temperature, Schottky Diodes, Waveguides, Microwave Oscillators, Signal Mixing, Submillimeter Waves, Whiskers (Crystals)

Scientific paper

A whisker-contacted 5 fF Schottky-barrier diode in a reduced-height waveguide has been employed as a mixer at 460 GHz. Measured double-sideband mixer noise temperature is 3600 K at F(LO) = 459 GHz and F(IF) = 1.7 GHz, at 300 K ambient temperature. The noise from the carcinotron local oscillator is suppressed by more than 35 dB using a Martin-Puplett polarization diplexer. Measurements of diplexer behavior and losses of various materials at 460 GHz are also reported.

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