Quasioptical band-rejection filter at 100 GHz
- 1 January 1976
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 47 (1), 56-58
- https://doi.org/10.1063/1.1134490
Abstract
We describe a tunable Fabry–Perot type filter which has application to radio astronomy in the frequency band 80–110 GHz. The filter causes image sideband suppression when used with a heterodyne spectral line receiver having an intermediate frequency of 4.75 GHz. The transmission loss in the signal sideband is about 0.4 dB, while the image sideband rejection is more than 15 dB; there appears to be little if any problem with scattering or distortion of the antenna radiation pattern.Keywords
This publication has 3 references indexed in Scilit:
- Walk-Off Effects in Fabry-Perot DiplexersIEEE Transactions on Microwave Theory and Techniques, 1974
- Millimeter-Wavelength Radio-Astronomy TechniquesAnnual Review of Astronomy and Astrophysics, 1973
- Far-infrared properties of metallic mesh and its complementary structureInfrared Physics, 1967