Dual-band (S and C) sub-reflectors for frequency-reuse types of satellite communication systems for commercial and defense applications
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United States of America Patent
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Dec 7, 2021
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app pub date -
Jun 25, 2021
filing date -
Jun 25, 2021
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Abstract
Subreflectors for frequency-reuse types of satellite communication system which cover the S and C bands take the form of a three-dimensional waveguide with cross dipoles on each end, where each branch of each dipole is electrically connected by conductor that passes through the center of a substrate that fills the volume of the waveguide. The frequency selective surface sub-reflector is configured to permit the S-band antenna to transmit therethrough with an insertion loss of less than 0.5 decibels, and to reflect transmissions of the C-band antenna with transmissions through the frequency selective surface sub-reflector being less than 15 decibels.
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