Low-profile, multi-frequency, multi-band, magnetic dipole antenna
First Claim
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1. A multi-frequency band antenna comprising:
- a first antenna element including first, second, and third arms, the first and second arms configured to produce a first capacitive part of the antenna and the second and third arms configured to produce a second capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
a second antenna element including fourth, fifth, and sixth arms, the fourth and fifth arms configured to produce a third capacitive part of the antenna and the fifth and sixth arms configured to produce a fourth capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
a ground plate arranged adjacent to the first and second antenna elements, the ground plate and first antenna element configured to produce first and second inductive parts of the antenna and the ground plate and second antenna element configured to produce third and fourth inductive parts of the antenna, the inductive parts of the antenna configured to expel a magnetic field generated by the antenna;
the first and second antenna elements each being configured to produce a low frequency band and a high frequency band thus enabling the antenna to communicate on a variety of frequency bands.
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Abstract
Multi-frequency, low-profile, capacitively loaded magnetic dipole antennas to be used in wireless communications. Each antenna comprises one to n antenna elements and each element having one to n arms. The various antenna embodiments can cover a range of frequencies to be determined by the shape, size, and number of elements in the physical configuration of the antenna. The antenna configuration can also be adapted to expand frequency bands covered by the antenna or to fit within space restrictions dictated by specific antenna applications.
137 Citations
51 Claims
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1. A multi-frequency band antenna comprising:
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a first antenna element including first, second, and third arms, the first and second arms configured to produce a first capacitive part of the antenna and the second and third arms configured to produce a second capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
a second antenna element including fourth, fifth, and sixth arms, the fourth and fifth arms configured to produce a third capacitive part of the antenna and the fifth and sixth arms configured to produce a fourth capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
a ground plate arranged adjacent to the first and second antenna elements, the ground plate and first antenna element configured to produce first and second inductive parts of the antenna and the ground plate and second antenna element configured to produce third and fourth inductive parts of the antenna, the inductive parts of the antenna configured to expel a magnetic field generated by the antenna;
the first and second antenna elements each being configured to produce a low frequency band and a high frequency band thus enabling the antenna to communicate on a variety of frequency bands. - 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)
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25. A multi-frequency band antenna comprising:
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two to n antenna elements, each antenna element including first, second, and third arms, the first and second arms configured to produce a first capacitive part of the antenna and the second and third arms configured to produce a second capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
a ground plate arranged adjacent to the two to n antenna elements, the ground plate and each one of the two to n antenna elements configured to produce inductive parts of the antenna, the inductive parts of the antenna configured to expel a magnetic field generated by the antenna;
each one of the two to n antenna elements being configured to produce an overlapping low frequency band and an overlapping high frequency band configured to combine with the overlapping low and high frequency bands, respectively, produced by the other antenna elements to produce an expanded low frequency band and an expanded high frequency band. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
one to m additional antenna elements each additional antenna element including first, second, and third arms, the first and second arms configured to produce a first capacitive part of the antenna and the second and third arms configured to produce a second capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
each one of the one to m additional antenna elements being configured to produce a distinct low frequency band and a distinct high frequency band enabling the antenna to communicate in a plurality of different frequency bands.
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38. The antenna of claim 37 wherein the one to m additional elements are different sizes than the two to n antenna elements.
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39. The antenna of claim 37 wherein the one to m additional elements are similarly in size to the two to n antenna elements and wherein the first, second, and third arms of each of the one to m antenna elements are configured to compensate for the similarity in sizing between the one to m and two to n antenna elements thus enabling the one to m antenna elements to produce the distinct low and high frequency bands.
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40. A multi-frequency band antenna comprising:
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two to n antenna elements, each antenna element including first, second, and third arms, the first and second arms configured to produce a first capacitive part of the antenna and the second and third arms configured to produce a second capacitive part of the antenna to confine an electric field generated by the antenna in a horizontal plane;
a ground plate arranged adjacent to the two to n antenna elements, the ground plate and each one of the two to n antenna elements configured to produce inductive parts of the antenna, the inductive parts of the antenna configured to expel a magnetic field generated by the antenna;
each one of the two to n antenna elements being configured to produce a distinct low frequency band and a distinct high frequency band enabling the antenna to communicate in a plurality of frequency bands. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification