Low noise pre-amplifier for far-infrared observations

Details Low noise pre-amplifier for far-infrared observations Low noise pre-amplifier for far-infrared observations

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ijrsp..20..287s&link_type=abstract

(Thirty years of scientific ballooning in India; Symposium, Hyderabad, India, Oct. 22-24, 1990, Selected Papers. A92-23051 08-99

Physics

Space Physics

Balloon-Borne Instruments, Bolometers, Infrared Telescopes, Low Noise, Preamplifiers, Amplifier Design, Far Infrared Radiation, Gallium, Germanium

Scientific paper

A gallium doped germanium bolometer cooled to about 1.8 K is employed as a detector for FIR astronomical observations by utilizing a balloon-borne telescope. As the detector signals are weak, an ac coupled, feedback-stabilized, low noise preamplifier was developed to amplify these signals. This preamplifier is to be used with an array detector comprising two sets of six detectors, each set corresponding to a particular waveband.

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