Multiband waveguide reflector antenna feed
First Claim
1. A multiband waveguide reflector antenna feed comprising a plurality of circular waveguide feeds disposed in a concentric architecture said plurality of waveguide feeds comprising:
- a band 1 waveguide feed disposed in a center of the multiband waveguide reflector antenna feed;
a band 2 waveguide feed disposed in a concentric ring around the band 1 waveguide feed and operating as a coaxial waveguide with an outer surface of the band 1 waveguide feed as a band 2 inner conductor;
a band 3 waveguide feed disposed in a concentric ring around the band 2 waveguide feed and operating as a coaxial waveguide with an outer surface of the band 2 waveguide feed as a band 3 inner conductor; and
a band 4 waveguide feed disposed in a concentric around the band 3 waveguide feed and operating as a coaxial waveguide feed with an outer surface of the band 3 waveguide feed as a band 4 inner conductor.
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Accused Products
Abstract
A multiband waveguide reflector antenna feed comprises waveguide feeds in a concentric architecture. A waveguide feed is located in the center and coaxial waveguide feeds are disposed around the center feed. The waveguide feeds may be all-metallic with the center feed operating in a TE11 mode and the coaxial feeds operating in a coaxial TE11 mode. The waveguide feeds may have electromagnetic band gap (EBG) surfaces on waveguide surfaces. The center waveguide feed may have an EBG outer conductor surface and operate in a circular waveguide TEM mode. The coaxial waveguide feeds may have EBG inner and outer conductors and operate in a circular waveguide TEM mode. The coaxial feeds may have EBG inner conductors and near perfect electrical conductor (PEC) outer conductors and operate in a circular waveguide-like TE11 mode or may comprise EBG outer conductors and PEC inner conductors and operate in a quasi-TEM waveguide mode.
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Citations
19 Claims
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1. A multiband waveguide reflector antenna feed comprising a plurality of circular waveguide feeds disposed in a concentric architecture said plurality of waveguide feeds comprising:
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a band 1 waveguide feed disposed in a center of the multiband waveguide reflector antenna feed; a band 2 waveguide feed disposed in a concentric ring around the band 1 waveguide feed and operating as a coaxial waveguide with an outer surface of the band 1 waveguide feed as a band 2 inner conductor; a band 3 waveguide feed disposed in a concentric ring around the band 2 waveguide feed and operating as a coaxial waveguide with an outer surface of the band 2 waveguide feed as a band 3 inner conductor; and a band 4 waveguide feed disposed in a concentric around the band 3 waveguide feed and operating as a coaxial waveguide feed with an outer surface of the band 3 waveguide feed as a band 4 inner conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multiband waveguide reflector antenna feed comprising a plurality of waveguide feeds disposed in a concentric architecture said plurality of waveguide feeds comprising:
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a center waveguide feed disposed in a center of the multiband waveguide reflector antenna feed; and one or more coaxial waveguide feeds disposed around the center waveguide feed wherein an adjacent inner waveguide feed to the one or more coaxial waveguide feed acts as an inner conductor for the one or more coaxial waveguide feeds; wherein one or more of the plurality of waveguide feeds comprise electromagnetic band gap (EBG) surfaces on inner conductor waveguide surfaces. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification