Circular polarized antennas
First Claim
Patent Images
1. An apparatus comprising:
- at least one multi-layer antenna structure including a radiating element and a single feed line connected to the radiating element,the radiating element having a non-symmetrical outer perimeter shape;
wherein the at least one multi-layer antenna structure emits circularly polarized radiation; and
wherein the radiating element includes an aperture located at a central region of the radiating element, wherein the aperture located at the central region of the radiating element provides impedance matching of the at least one multi-layer antenna structure when operating at a particular frequency band.
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Abstract
An apparatus comprising at least one antenna for transmission and/or reception of circularly polarized electromagnetic radiation. The antenna includes a radiating element and a single feed line. The single feed line is coupled between the radiating element and a circuit that drives the antenna. The radiating element has a non-symmetrical outer perimeter shape. The radiating element may include an aperture. The antenna may further include a ground element and a supplemental ground feed structure, the supplemental ground feed structure located between the radiating element and the ground element.
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Citations
25 Claims
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1. An apparatus comprising:
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at least one multi-layer antenna structure including a radiating element and a single feed line connected to the radiating element, the radiating element having a non-symmetrical outer perimeter shape; wherein the at least one multi-layer antenna structure emits circularly polarized radiation; and wherein the radiating element includes an aperture located at a central region of the radiating element, wherein the aperture located at the central region of the radiating element provides impedance matching of the at least one multi-layer antenna structure when operating at a particular frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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a patch antenna including means for emitting circularly polarized electromagnetic radiation having a center wavelength λ and
means for singly feeding the means for emitting,the means for emitting circularly polarized electromagnetic radiation (1) having a non-symmetrical outer perimeter shape and (2) including an aperture located at a central region of the means for emitting circularly polarized electromagnetic radiation, wherein the aperture located at the central region of the means for emitting circularly polarized electromagnetic radiation provides impedance matching of the patch antenna when operating at a particular frequency band; wherein the means for singly feeding is electrically coupled between the means for emitting and a circuit that drives the patch antenna. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An antenna comprising:
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a radiating element having a non-symmetrical outer perimeter shape; a ground element; a supplemental ground feed structure electrically coupled to the ground element; a single feed line directly connecting the radiating element to an integrated circuit; wherein the supplemental ground feed structure is located directly between the single feed line and the ground element. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification