Antenna with one or more holes
DCFirst Claim
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1. A monopole antenna comprising:
- a radiating element defining an external perimeter;
wherein the radiating element comprises at least one hole;
wherein the at least one hole has an area of at least 20% of an area included inside the external perimeter;
wherein the external perimeter of the radiating element is shaped as a polygonal element comprising at least four sides;
wherein a perimeter of the at least one hole is shaped as a polygon comprising three or more sides;
wherein the radiating element is shorter than a quarter of a longest operating wavelength of the monopole antenna;
wherein the monopole antenna features a multiband behavior;
wherein the external perimeter of the radiating element and the perimeter of at least one of the at least one hole are not both circles; and
wherein the external perimeter of the radiating element and the perimeter of at least one of the at least one hole are not both ellipses.
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Abstract
The invention refers to a new type of multihole antenna which is mainly suitable for mobile communications or in general to any other application where the integration of telecom systems or applications in a single antenna is important. The antenna consists of a radiating element which at least includes one hole. By means of this configuration, the antenna provides a broadband and multiband performance, and hence it features a similar behaviour through different frequency bands. Also, the antenna features a smaller size with respect to other prior art antennas operating at the same frequency.
45 Citations
30 Claims
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1. A monopole antenna comprising:
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a radiating element defining an external perimeter; wherein the radiating element comprises at least one hole; wherein the at least one hole has an area of at least 20% of an area included inside the external perimeter; wherein the external perimeter of the radiating element is shaped as a polygonal element comprising at least four sides; wherein a perimeter of the at least one hole is shaped as a polygon comprising three or more sides; wherein the radiating element is shorter than a quarter of a longest operating wavelength of the monopole antenna; wherein the monopole antenna features a multiband behavior; wherein the external perimeter of the radiating element and the perimeter of at least one of the at least one hole are not both circles; and wherein the external perimeter of the radiating element and the perimeter of at least one of the at least one hole are not both ellipses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A handheld telephone comprising:
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a monopole antenna comprising; a radiating element defining an external perimeter; wherein the radiating element comprises at least one hole; wherein the at least one hole has an area of at least 20% of an area included inside the external perimeter; wherein the external perimeter of the radiating element is shaped as a polygonal element comprising at least four sides; wherein a perimeter of the at least one hole is shaped as a polygon comprising three or more sides; wherein the radiating element is shorter than a quarter of a longest operating wavelength of the monopole antenna; wherein the monopole antenna features a multiband behavior; wherein the external perimeter of the radiating element and the perimeter of at least one of the at least one hole are not both circles; and wherein the external perimeter of the radiating element and the perimeter of at least one of the at least one hole are not both ellipses. - View Dependent Claims (28)
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29. A monopole antenna comprising:
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a radiating element defining an external perimeter; wherein the radiating element comprises at least one hole; wherein the at least one hole has an area of at least 20% of an area included inside the external perimeter; wherein the external perimeter of the radiating element is shaped as a polygonal element comprising at least four sides; wherein the perimeter of the at least one hole is shaped as a polygon comprising three or more sides; wherein the radiating element is shorter than a quarter of a longest operating wavelength of the antenna; wherein the monopole antenna features a multiband behavior; and wherein the at least one hole is not symmetrically aligned with respect to a vertical axis of the radiating element.
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30. A monopole antenna comprising:
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a radiating element defining an external perimeter; wherein the radiating element comprises at least one hole; wherein the at least one hole has an area of at least 20% of an area included inside the external perimeter; wherein the external perimeter of the radiating element is shaped as a polygonal element comprising at least four sides; wherein the perimeter of the at least one hole is shaped as a polygon comprising three or more sides; wherein the radiating element is shorter than a quarter of a longest operating wavelength of the antenna; wherein the monopole antenna features a multiband behavior; and wherein the radiating element comprises at least two holes and wherein the at least two holes are not similar in shape.
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Specification