Low noise parametric amplifiers for radio astronomy observations at 18-21 CM wavelength

Details Low noise parametric amplifiers for radio astronomy observations at 18-21 CM wavelength Low noise parametric amplifiers for radio astronomy observations at 18-21 CM wavelength

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974esr..nasa...23k&link_type=abstract

"In its Equipment for Space Res. (NASA-TT-F-785) p 23-27 (SEE N75-10988 02-18) Transl. into ENGLISH from the book "Apparatura d

Astronomy and Astrophysics

Astronomy

Parametric Amplifiers, Radio Astronomy, Superhigh Frequencies, Low Noise, Preamplifiers, Radiometers

Scientific paper

The principle characteristics and use of SHF parametric amplifiers for radiometer input devices are explored. Balanced parametric amplifiers (BPA) are considered as the SHF signal amplifiers allowing production of the amplifier circuit without a special filter to achieve decoupling. Formulas to calculate the basic parameters of a BPA are given. A modulator based on coaxial lines is discussed as the input element of the SHF. Results of laboratory tests of the receiver section and long-term stability studies of the SHF sector are presented.

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