IF amplifier stability for the heterodyne instrument for FIRST (HIFI)

Details IF amplifier stability for the heterodyne instrument for FIRST (HIFI) IF amplifier stability for the heterodyne instrument for FIRST (HIFI)

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4013..296s&link_type=abstract

Proc. SPIE Vol. 4013, p. 296-304, UV, Optical, and IR Space Telescopes and Instruments, James B. Breckinridge; Peter Jakobsen; E

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The Heterodyne Instrument for FIRST (HIFI) is a heterodyne receiver system which has an intermediate frequency (IF) amplifier that will likely exhibit 1/f-type gain fluctuations. Although the level of fluctuation is very small, wideband spectral observations require exceptional stability. A methodology for measuring 1/f fluctuations is described along with measurements of two amplifiers. Comparisons are made with previous 1/f measurements of HEMT amplifiers. The implications for HIFI are described.

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