Title :
Image Recovery Millimeter-Wave Mixer
Author_Institution :
Radioastronomisches Institut der Universitÿt Bonn, W. Germany
Abstract :
This paper describes the design of an 80 GHz image recovery mixer that has a conversion loss of 4.4 dB. The image filter is a circular highpass filter using the cutoff properties of a waveguide section with reduced diameter. LO injection is preformed by a TE111-mode bandpass filter. The mixer noise temperature is 650 K at room temperature and 280 K at 20 K. The lower sideband suppression is better than 40 dB.
Keywords :
Band pass filters; Fasteners; Frequency response; Image converters; Image enhancement; Inductors; Insertion loss; Schottky diodes; Tellurium; Waveguide transitions;
Conference_Titel :
Microwave Conference, 1979. 9th European
Conference_Location :
Brighton, UK
DOI :
10.1109/EUMA.1979.332668
