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US 8,537,068 B2Granted
Method and apparatus for tri-band feed with pseudo-monopulse tracking
AssigneeRaytheon Company
InventorsLarry C. Martin, Yueh-Chi Chang, John J. Hanlin, William F. Call
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Abstract
Methods and apparatus for a feed assembly for a reflector antenna including an aperture common to low, mid, and high frequency bands, a polyrod design to launch signals in the mid and high frequency bands, a horn to launch signals in the low frequency band, a co-located phase center for launching signals in the low, mid, and high frequency bands, and a low-band monopulse array located on a surface about the aperture to track a satellite.
Claims20
A feed assembly for a reflector antenna, comprising:
- an antenna aperture common to low, mid, and high frequency bands;
- a polyrod to launch signals from the aperture in the mid and high frequency bands while supporting the low band;
- a horn to launch signals from the aperture in the low frequency band;
- a co-located phase center for launching signals in the low, mid, and high frequency bands;
- and
- a low-band monopulse array located on a surface about a perimeter of the aperture to track a satellite.
3 more elements
A method, comprising:
- receiving and transmitting signals using a feed assembly for a reflector antenna having an antenna aperture common to low, mid, and high frequency bands;
- employing a polyrod to launch signals from the aperture in the mid and high frequency bands while supporting the low band and employing a compact horn to launch signals from the aperture in the low frequency band, wherein a phase center for launching signals in the low, mid, and high frequency bands is co-located;
- and
- employing a low-band monopulse array located on a surface about a perimeter of the aperture to track a satellite.
1 more element
Dependencies are inferred from the claim text.