Programmable and automatic calibrator for radio sources at 45 MHz

Details Programmable and automatic calibrator for radio sources at 45 MHz Programmable and automatic calibrator for radio sources at 45 MHz

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rmxaa...6..363a&link_type=abstract

(International Astronomical Union, Reunion Regional Latinoamericana de Astronomia, 2nd, Merida, Venezuela, Jan. 19-23, 1981) Rev

Astronomy and Astrophysics

Astronomy

2

Calibrating, Noise Generators, Radio Astronomy, Radio Telescopes, Block Diagrams, Digital To Analog Converters, Diodes, Feedback Control, Numerical Control, Saturation, Switching Circuits

Scientific paper

The design, construction and operation of a standard calibrator is presented. The calibrator consists of saturated diodes controlled by an indirect feed-back system and a digital-to-analog converter. The advantages over similar designs are described, as for instance, high-resolution in the calibration scale, good stability, very fast calibrations, use of balanced electronic switches, etc.

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