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US 2017/0256864 A1Published application
Multi-band, dual-polarization reflector antenna
AssigneeViaSat, Inc.
InventorsAnders Jensen, Donald L Runyon
Life of this patent
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Abstract
An antenna may include a reflector and a multi-band feed assembly. A support member may be coupled to the multi-band feed assembly to orient the multi-band feed assembly for direct illumination of the reflector. The multi-band feed assembly may include first and second feeds, each having a respective septum polarizer coupled between a respective common waveguide and a respective pair of waveguides. A housing of the support member may contain the respective septum polarizers and the respective pairs of waveguides.
Claims21
An antenna comprising:
- a single reflector;
- a multi-band feed assembly comprising first and second feeds connected together, the first feed operable over a first frequency band and comprising a first septum polarizer coupled between a first common waveguide and a first pair of waveguides, the second feed operable over a second frequency band different than the first frequency band and comprising a second septum polarizer coupled between a second common waveguide and a second pair of waveguides;
- and
- a support member coupled to the multi-band feed assembly to orient the multi-band feed assembly for direct illumination of the single reflector, the support member comprising a housing containing the first and second pairs of waveguides and the first and second septum polarizers.
1 more element
A waveguide assembly comprising:
- a first housing layer comprising a first waveguide of a first pair of waveguides and a first waveguide of a second pair of waveguides, the first pair of waveguides operable over a first frequency band and the second pair of waveguides operable over a second frequency band different than the first frequency band;
- a second housing layer comprising a second waveguide of the first pair of waveguides and a second waveguide of the second pair of waveguides;
- and
- a septum layer between the first housing layer and the second housing layer, the septum layer comprising a first septum polarizer between the first and second waveguides of the first pair of waveguides, and a second septum polarizer between the first and second waveguides of the second pair of waveguides.
1 more element
An antenna comprising:
- a single reflector;
- a waveguide assembly comprising a feed oriented for direct illumination of the single reflector, the waveguide assembly comprising:
- a first housing layer comprising a first waveguide of a first pair of waveguides of the feed coupled to a first portion of a first common waveguide of the feed;
- a second housing layer comprising a second waveguide of the first pair of waveguides coupled to a second portion of the first common waveguide;
- and
- a septum layer between the first housing layer and the second housing layer, the septum layer comprising a septum polarizer of the feed coupled between the first common waveguide and the first pair of waveguides.
3 more elements
Dependencies are inferred from the claim text.