Multiple flared antenna horn with enhanced aperture efficiency
First Claim
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1. An antenna horn with enhanced aperture efficiency, the antenna horn comprising:
- at least three contiguous flared horn sections, each of said horn sections having a rectangular cross section;
wherein a first of the flared horn sections, is adapted to be coupled to a rectangular waveguide and the last of the flared horn sections has rectangular aperture through which electromagnetic energy is coupled to or from space;
wherein the slopes and lengths of the flared horn sections are selected to enhance desirable electromagnetic modes at the aperture, thereby enhancing the aperture efficiency and antenna gain;
wherein the antenna horn has a total axial length no greater than twice the width of the aperture;
and wherein the desirable electromagnetic modes are TE modes and the flared horn sections are selected to enhance the TE modes and suppress any TM modes at the aperture.
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Abstract
An antenna horn having multiple flared sections with their slopes and lengths selected to enhance desirable electromagnetic modes and to suppress undesirable modes at the horn aperture, thereby increasing the aperture efficiency and antenna gain.
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Citations
6 Claims
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1. An antenna horn with enhanced aperture efficiency, the antenna horn comprising:
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at least three contiguous flared horn sections, each of said horn sections having a rectangular cross section;
wherein a first of the flared horn sections, is adapted to be coupled to a rectangular waveguide and the last of the flared horn sections has rectangular aperture through which electromagnetic energy is coupled to or from space;
wherein the slopes and lengths of the flared horn sections are selected to enhance desirable electromagnetic modes at the aperture, thereby enhancing the aperture efficiency and antenna gain;
wherein the antenna horn has a total axial length no greater than twice the width of the aperture;
and wherein the desirable electromagnetic modes are TE modes and the flared horn sections are selected to enhance the TE modes and suppress any TM modes at the aperture. - View Dependent Claims (2, 3, 5, 6)
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4. (canceled)
Specification