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

Michael D. Seiffert; Juan Daniel Gallego-Puyol; Isaac Lopez Fernandez; Nick D. Whyborn; John C. Pearson

doi:10.1117/12.393986

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28 July 2000 IF amplifier stability for the heterodyne instrument for FIRST (HIFI)

Michael D. Seiffert, Juan Daniel Gallego-Puyol, Isaac Lopez Fernandez, Nick D. Whyborn, John C. Pearson

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Proceedings Volume 4013, UV, Optical, and IR Space Telescopes and Instruments; (2000) https://doi.org/10.1117/12.393986
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

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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Michael D. Seiffert, Juan Daniel Gallego-Puyol, Isaac Lopez Fernandez, Nick D. Whyborn, and John C. Pearson "IF amplifier stability for the heterodyne instrument for FIRST (HIFI)", Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000); https://doi.org/10.1117/12.393986

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