Differential-fed stacked patch antenna
First Claim
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1. An antenna system comprising:
- a grounded substrate;
a first differential feed patch antenna that includes a first radiating system coupled to the grounded substrate and a first feed system having two feed points for providing a first differential feed signal, wherein the first radiating system resonates in response to an excitation by the first differential feed signal; and
a second differential feed patch antenna being separated from the first differential feed patch antenna by a first distance, the second differential feed patch antenna including a second radiating system coupled to the grounded substrate and a second feed system having two feed points for providing a second differential feed signal, wherein the second radiating system resonates in response to an excitation by the second differential feed signal, wherein at least a portion of the second differential feed patch antenna serves as a ground plane for the first differential feed patch antenna, and wherein the first radiating system resonates at a higher frequency than the second radiating system.
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Abstract
An antenna system includes a stacked patch antenna (100) comprising two or more patch antennas symmetrically aligned around an axis. The stacked patch antenna (100) comprises a differential feed patch antenna. The two or more patch antennas include a first patch antenna (105) and a second patch antenna (110). At least a portion of the second patch antenna (110) serves as a ground plane for the first patch antenna (105).
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Citations
13 Claims
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1. An antenna system comprising:
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a grounded substrate; a first differential feed patch antenna that includes a first radiating system coupled to the grounded substrate and a first feed system having two feed points for providing a first differential feed signal, wherein the first radiating system resonates in response to an excitation by the first differential feed signal; and a second differential feed patch antenna being separated from the first differential feed patch antenna by a first distance, the second differential feed patch antenna including a second radiating system coupled to the grounded substrate and a second feed system having two feed points for providing a second differential feed signal, wherein the second radiating system resonates in response to an excitation by the second differential feed signal, wherein at least a portion of the second differential feed patch antenna serves as a ground plane for the first differential feed patch antenna, and wherein the first radiating system resonates at a higher frequency than the second radiating system. - View Dependent Claims (2, 3, 4, 5)
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6. An antenna system comprising:
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a grounded substrate; a first differential feed patch antenna that includes a first radiating system coupled to the grounded substrate and a first feed system having two or more pairs of first feed points, wherein the two or more pairs of first feed points provide two or more first differential feed signals, and wherein the first radiating system resonates in response to an excitation by the two or more differential feed signals; a second differential feed patch antenna being separated from the first differential feed patch antenna by a first distance, the second differential feed patch antenna including a second radiating system coupled to the grounded substrate and a second feed system having two or more pairs of second feed points, wherein the two or more pairs of second feed points provide two or more second differential feed signals, and wherein the second radiating system resonates in response to an excitation by the two or more second differential feed signals; wherein at least a portion of the second differential feed patch antenna serves as a ground plane for the first differential feed patch antenna and wherein the first radiating system resonates at a higher frequency than the second radiating system. - View Dependent Claims (7, 8, 9, 10)
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11. An antenna system comprising:
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a plurality of differential feed patch elements symmetrically aligned about a first axis, a first patch element of the plurality of differential feed patch elements operable to radiate at a first frequency responsive to at least a first differential pair of excitation signals, a second patch element of the plurality of differential feed patch elements being separated from the first patch element by a first distance and operable to radiate at a second frequency responsive to at least a second differential pair of excitation signals, the second frequency being lower than the first frequency; a ground plane symmetrically aligned about the first axis and separated from the plurality of differential feed patch elements by a second distance; and a feed system operable to supply the first differential pair of excitation signals and the second differential pair of excitation signals to the plurality of patch elements. - View Dependent Claims (12, 13)
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Specification