A 230-GHz radiometer system employing a second-harmonic mixer

Details A 230-GHz radiometer system employing a second-harmonic mixer A 230-GHz radiometer system employing a second-harmonic mixer

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976itmtt..24..859g&link_type=abstract

IEEE Transactions on Microwave Theory and Techniques, vol. MTT-24, Nov. 1976, p. 859-861.

Astronomy and Astrophysics

Astronomy

4

Frequency Converters, Microwave Oscillators, Microwave Radiometers, Mixing Circuits, Harmonic Oscillators, Noise Temperature, Radio Astronomy, Schottky Diodes, Waveguides

Scientific paper

A radiometer system for use in the 1.3 mm region has been constructed and used for radio astronomical observations. A second-harmonic mixer employing a single Schottky diode downconverts the incident power to an IF frequency of about 1400 MHz. The measured double-sideband system noise temperature is 6000 K (noise figure = 13 dB) and the double-sideband mixer conversion loss is calculated to be 10 dB. The mixer is tunable over a range of at least 15 GHz.

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