Ruby masers for maximum G/Top.

Details Ruby masers for maximum G/Top. Ruby masers for maximum G/Top.

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ieeep..82..796s&link_type=abstract

Proc. IEEE, Vol. 82, No. 5, p. 796 - 810

Astronomy and Astrophysics

Astronomy

1

Radio Astronomy: Masers

Scientific paper

The Deep-Space Network (DSN) includes world-wide networks of 26-, 34- and 70-m antennas in Australia, Spain, and the USA. Ruby masers are used on the 34- and 70-m antennas to minimize the system operating noise temperature and thereby maximize the DSN receiving system figure of merit, antenna gain divided by system operating noise temperature. These systems are used for deep-space telecommunications, solar system radar, and radio astronomy. Cavity, traveling-wave, and reflected-wave maser designs and performance characteristics from 960 MHz to 34 GHz are summarized. Effective noise temperatures of ruby masers are addressed with emphasis on a 33.68-GHz maser where quantum noise is a major source of noise.

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