Accession Number : AD0630613

Title :   AN IMPROVED FEEDBACK RADIOMETER.

Descriptive Note : Instrumentation papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Goggins,William B. ,Jr.

Report Date : FEB 1966

Pagination or Media Count : 34

Abstract : Feedback applied to a radiometer will stabilize its gain. Two improved versions of an earlier feedback radiometer system have been built and tested. One used a mechanical attenuator, and the other an electronic attenuator. The following improvements were incorporated: faster responding and more accurate servo-driven noise source, a current-source driver for the ferrite switch, more versatile rf circuitry, improved coherent detector, and transistorized circuitry. The response of both servo loops proved to be fast enough and linear enough for almost any radiometer application. (Author)

Descriptors :   (*RADIOMETERS, FEEDBACK), CONTROL, GAIN, ATTENUATORS, PERFORMANCE(ENGINEERING), RADIO ASTRONOMY, STABILITY, L BAND, NOISE(RADIO), DEMODULATORS, SERVOMOTORS, MICROWAVE EQUIPMENT

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE