A large millimeter wave antenna

Details A large millimeter wave antenna A large millimeter wave antenna

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ijimw...4..793a&link_type=abstract

International Journal of Infrared and Millimeter Waves (ISSN 0195-9271), vol. 4, Sept. 1983, p. 793-808.

Physics

4

Antenna Design, Gravitational Effects, Microwave Antennas, Millimeter Waves, Deformation, Temperature Distribution

Scientific paper

Two of the problems faced by high-precision dishes for the millimeter wavelength region are discussed. These are gravitational deformation and the temperature of the structure that includes the reflector panels. The problems are treated in relation to the Nobeyama (Japan) 45-m dish. A reflecting surface accuracy of approximately 200 microns rms has been attained with this dish. The top and bottom of the back structure are covered with thermal insulators about 30 mm thick.

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