Title :
A Low-Noise Receiver for 80 GHz
Author :
Vowinkel, B. ; Reinert, W. ; Gebler, K.-H.
Author_Institution :
Radioastronomisches Institut der Universitÿt Bonn, Sonderforschungsbereich Radioastronomie
Abstract :
A description of a mixer-receiver designed to operate at 80 GHz with an intermediate frequency of 2.7 GHz is given. An uncooled parametric amplifier is used for IF-amplification. The local oscillator injection is realized by a low-loss ring cavity directional filter. In single-sideband operation a cutoff filter is used for image recovery. The total noise figure of the receiver is 6.9 dB in single-sideband operation and 5.3 dB in double-sideband operation. The system was successfully used on the 13.7 m dish of the TU Helsinki for radioastronomical observations.
Keywords :
Bandwidth; Broadband amplifiers; Gain; Inductors; Local oscillators; Matched filters; Noise figure; Noise measurement; Radio frequency; Schottky diodes;
Conference_Titel :
Microwave Conference, 1976. 6th European
Conference_Location :
Rome, Italy
DOI :
10.1109/EUMA.1976.332355
