Thermal and spectral characteristics of quasioptical filtering devices for cryoelectronic receiving systems
DOI:
https://doi.org/10.15407/dopovidi2015.12.049Keywords:
aluminum nitride, cryoelectronics, infrared filters, polymer films, thermal physicsAbstract
We discuss the use of polymer films as infrared-radiation filters. Numerical calculations of thermal characteristics of polymer films placed on a section of a circular waveguide are performed. It is shown that an additional coverage of such films with a layer with a high thermal-conductivity coefficient is needed for the realization of effective infra-red quasioptical filtering devices. Implementation of such composed structures allowed us to maximize a barrage from parasitic thermal re-radiation in the infrared region of the spectrum and the transmission with the least losses of an information signal in the operating microwave range 2–36 GHz.
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