Physics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985infph..25..267c&link_type=abstract
(European Physical Society, International Conference on Infrared Physics, 3rd, Zurich, Switzerland, July 23-27, 1984) Infrared P
Physics
1
Heterodyning, Microwave Equipment, Mixing Circuits, Radio Receivers, Submillimeter Waves, Block Diagrams, Field Effect Transistors, Gallium Arsenides, Integrated Circuits, Schottky Diodes, Waveguides
Scientific paper
The provided review of receiver technology for the submillimeter-wave region takes into account topics related to submillimeter receiver design, discrete diode mixers, and monolithic integrated circuit mixers. It is found that present-day Schottky-diode mixers have shown good performance over a large portion of the submillimeter-wave region. A comparison of the embedding impedance of various mixer structures employed in the submillimeter region indicates that fundamental waveguide and monolithic integrated circuit mixers should provide better performance than the quasi-optical mixers currently in use. However, this comparison considers only the embedding impedance at the signal frequency and does not take into account the effect of harmonic impedances or the minimization of mixer noise. The difficulty and expense of fabricating fundamental waveguide mixers at the higher frequencies limits, unfortunately, their use to the longer wavelength portion of the submillimeter band.
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