Multi-step circular horn system
First Claim
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1. A multi-step horn system comprising:
- a horn having an aperture opening and a radiating opening, said horn receiving a relatively uniform, circularly symmetric field distribution at said aperture opening, wherein said field has a given wavelength;
a first flare located on said horn between said aperture opening and said radiating opening;
a first step coupled to said first flare and located between said first flare and said aperture opening, said first step shape and location on said horn based upon said wavelength to generate a desired first mode; and
a third flare coupled to a first flange and located between said first flange and said aperture opening.
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Abstract
A multi-step circular horn system may have several steps and may use more than one flared section based upon design considerations. In order to achieve high aperture efficiency, the aperture field distribution is close to uniform. For good cross-polar performance, the field distribution is circularly symmetric. Location and shape of the steps is determined by the wavelength of the signal being transmitted and the space constraints imposed by the antenna design. The step discontinuities generate desired modes of operation in the right proportion.
21 Citations
13 Claims
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1. A multi-step horn system comprising:
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a horn having an aperture opening and a radiating opening, said horn receiving a relatively uniform, circularly symmetric field distribution at said aperture opening, wherein said field has a given wavelength;
a first flare located on said horn between said aperture opening and said radiating opening;
a first step coupled to said first flare and located between said first flare and said aperture opening, said first step shape and location on said horn based upon said wavelength to generate a desired first mode; and
a third flare coupled to a first flange and located between said first flange and said aperture opening. - View Dependent Claims (2, 3, 4, 5)
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6. A satellite communications system, comprising;
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a ground station;
a satellite in orbit and in communication with said ground station, said satellite having a multi-step circular horn system comprising;
a horn having an aperture opening and a radiating opening, said horn receiving a relatively uniform, circularly symmetric field distribution at said aperture opening, wherein said field has a given wavelength;
a first flare located on said horn between said aperture opening and said radiating opening;
a first step coupled to said first flare and located between said first flare and said aperture opening, said first step shape and location on said horn based upon said wavelength to generate a desired first mode; and
a third flare coupled to a first flange and located between said first flange and said aperture opening. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification