Compact waveguide horn antenna and method of manufacture
First Claim
Patent Images
1. A parabolic antenna comprising:
- a antenna body having a signal source aperture, a signal output aperture, and a plurality of corrugations located on the external periphery of said signal output aperture; and
a parabolic reflector positioned within said antenna to communicate signals between said signal source aperture and said signal output aperture.
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Abstract
A parabolic rectangular horn antenna includes a source aperture, a parabolic reflector, and an output aperture. The source aperture has a first port for receiving a planar wavefront signal and a second port for providing a substantially cylindrical wavefront signal. The parabolic reflector is positioned within the horn to receive the cylindrical wavefront signal, transforming it to a substantially planar wavefront signal at a predefined location. The output aperture is positioned at the predefined location and outputs the substantially planar wavefront signal. Corrugations are adjacently placed at both sides of the output aperture to optimize the antenna beam pattern.
14 Citations
13 Claims
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1. A parabolic antenna comprising:
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a antenna body having a signal source aperture, a signal output aperture, and a plurality of corrugations located on the external periphery of said signal output aperture; and a parabolic reflector positioned within said antenna to communicate signals between said signal source aperture and said signal output aperture. - View Dependent Claims (2, 3, 4)
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5. A parabolic antenna, comprising:
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a antenna body having a signal source aperture and a signal output aperture; and a parabolic reflector positioned within said antenna to communicate signals between said signal source aperture and said signal output aperture, wherein said parabolic reflector comprises a dispersive surface capable of producing incoherently-phased signals when illuminated. - View Dependent Claims (6, 7)
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8. An antenna array comprising a plurality of parabolic antennas, each of the parabolic antennas comprising:
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a antenna body having a signal source aperture, a signal output aperture, and a plurality of corrugations located on the external periphery of said signal output aperture; and a parabolic reflector positioned within said antenna to communicate signals between said signal source aperture and said signal output aperture. - View Dependent Claims (9, 10, 11)
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12. A method for fabricating a cast parabolic rectangular horn antenna, the method comprising the steps of:
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developing a theoretical design of the parabolic rectangular horn producing a desired beam pattern response; fabricating a machined antenna prototype based upon said developed theoretical design; verifying the performance of said machined antenna prototype; generating a casting negative based upon said machined antenna prototype; fabricating a cast antenna prototype; verifying the performance of said cast antenna prototype; and providing a production cast negative for producing a plurality of said cast parabolic rectangular horn antennas. - View Dependent Claims (13)
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Specification