Horn antenna and system for transmitting and/or receiving radio frequency signals in multiple frequency bands
First Claim
Patent Images
1. A horn antenna for transmitting and/or receiving radio frequency signals in multiple frequency bands, the horn antenna comprising:
- an exterior surface;
an interior surface, the interior surface forming a hollow area in the horn antenna, the hollow area being substantially funnel-shaped and comprising first and second ends, the hollow area decreasing in diameter from the first end to the second end, the interior surface being smooth-walled and comprising a plurality of slope discontinuities;
an aperture disposed at the first end and comprising the largest diameter of the hollow area; and
a throat disposed distally from the aperture and at the second end of the hollow area, the throat comprising the smallest diameter of the hollow area,wherein the horn antenna is configured to transmit and/or receive radio frequency signals in multiple frequency bands that are spread over more than an octave bandwidth and with at least a 2.25-to-1 bandwidth ratio, andwherein the interior surface does not include a slope having a ninety-degree angle from an axis coaxial to a center diameter of the horn antenna.
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Accused Products
Abstract
A horn antenna includes smooth-walls with multiple slope discontinuities. The horn antenna may have more than an octave bandwidth with a 2.25:1 bandwidth ratio to cover the frequencies of 20 GHz, 30 GHz, and 45 GHz, or all the desired bands for military or other communications.
33 Citations
24 Claims
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1. A horn antenna for transmitting and/or receiving radio frequency signals in multiple frequency bands, the horn antenna comprising:
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an exterior surface; an interior surface, the interior surface forming a hollow area in the horn antenna, the hollow area being substantially funnel-shaped and comprising first and second ends, the hollow area decreasing in diameter from the first end to the second end, the interior surface being smooth-walled and comprising a plurality of slope discontinuities; an aperture disposed at the first end and comprising the largest diameter of the hollow area; and a throat disposed distally from the aperture and at the second end of the hollow area, the throat comprising the smallest diameter of the hollow area, wherein the horn antenna is configured to transmit and/or receive radio frequency signals in multiple frequency bands that are spread over more than an octave bandwidth and with at least a 2.25-to-1 bandwidth ratio, and wherein the interior surface does not include a slope having a ninety-degree angle from an axis coaxial to a center diameter of the horn antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A horn antenna for transmitting and/or receiving radio frequency signals in multiple frequency bands, the horn antenna comprising:
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an exterior surface; an interior surface disposed in the horn antenna, the interior surface forming a hollow area in the horn antenna, the hollow area being substantially funnel-shaped and comprising first and second ends, the hollow area decreasing in diameter from the first end to the second end, the interior surface being smooth-walled and comprising a plurality of slope discontinuities; an aperture disposed at the first end and comprising the largest diameter of the hollow area, the diameter of the aperture configured to be less than 12 times the wavelength of a highest frequency of the multiple frequency bands; and a throat disposed distally from the aperture and at the second end of the hollow area, and comprising the smallest diameter of the hollow area, wherein the horn antenna is configured to transmit and/or receive radio frequency signals in multiple frequency bands, and wherein the interior surface does not include a slope having a ninety-degree angle from an axis coaxial to a center diameter of the horn antenna. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A horn antenna system for transmitting and/or receiving radio frequencies in multiple frequency bands, the horn antenna system comprising:
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a reflector antenna; and a horn antenna, the horn antenna configured to transmit and/or receive radio frequencies by reflecting the radio frequencies off the reflecting antenna, the horn antenna comprising; an exterior surface; an interior surface disposed in the horn antenna, the interior surface forming a hollow area in the horn antenna, the hollow area being substantially funnel-shaped and comprising first and second ends, the hollow area decreasing in diameter from the first end to the second end, the interior surface being smooth-walled and comprising a plurality of slope discontinuities; an aperture disposed at the first end and comprising the largest diameter of the hollow area; and a throat disposed distally from the aperture at the second end of the hollow area and comprising the smallest diameter of the hollow area, wherein the horn antenna is configured to transmit and/or receive radio frequency signals in multiple frequency bands with more than an octave bandwidth and with at least a 2.25-to-1 bandwidth ratio, and wherein the interior surface does not include a slope having a ninety-degree angle from an axis coaxial to a center diameter of the horn antenna. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification