Abstract
Mesh band-pass filters for 300-, 450-, 600-, and 750-GHz central frequencies are designed and manufactured. Copper and aluminum foil and foil-clad Teflon filters were made by chemical and ionic etching methods, and an aluminum film evaporated on a kapton film was formed by the lift-off lithography method. A gold layer was electrolytically applied on copper mesh filters. Characteristics of the filters were measured in the millimeter, submillimeter, and infrared (IR) ranges. Foil filters demonstrate better characteristics at lower frequencies, while filters with evaporated films have better characteristics at upper frequencies. The smallest transmission loss was 0.13 dB. For a combination consisting of four filters, this loss was 0.9 dB. The IR radiation attenuation in a 2.5- to 25.0-μm wavelength region was no less than 11 dB per filter.
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Original Russian Text © M.A. Tarasov, V.D. Gromov, G.D. Bogomolov, E.A. Otto, L.S. Kuzmin, 2009, published in Pribory i Tekhnika Eksperimenta, 2009, No. 1, pp. 85–89.
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Tarasov, M.A., Gromov, V.D., Bogomolov, G.D. et al. Fabrication and characteristics of mesh band-pass filters. Instrum Exp Tech 52, 74–78 (2009). https://doi.org/10.1134/S0020441209010114
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DOI: https://doi.org/10.1134/S0020441209010114