Dual antenna apparatus and methods
First Claim
Patent Images
1. A dual band antenna comprising:
- a substrate comprising a width and a length, said substrate further comprising;
a first antenna operating at a first operating band; and
a second antenna operating at a second operating band, said second operating band substantially differing from said first operating band;
wherein said first antenna and said second antenna share a feed point and a feed conductor, and at least one of said first or second antennas comprises a first radiator and a second radiator, and at least one of said antennas comprises a third radiator; and
wherein said first radiator comprises said feed point and said second radiator comprises a first end and a second end, said second end coupled to a ground and disposed farther from said first radiator than said first end.
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Abstract
A dielectric dual antenna apparatus intended for applications such as small-sized radio frequency devices. The dual antenna comprises a first partial antenna which implements the lower operating band of the antenna and another partial antenna implementing the upper operating band. The partial antennas have a shared substrate, which together with the radiators constitutes an integrated antenna component. The matching of the dual antenna can be improved in either operating band without degrading it in the other operating band at the same time. Methods of operating the aforementioned apparatus are also disclosed.
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Citations
41 Claims
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1. A dual band antenna comprising:
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a substrate comprising a width and a length, said substrate further comprising; a first antenna operating at a first operating band; and a second antenna operating at a second operating band, said second operating band substantially differing from said first operating band; wherein said first antenna and said second antenna share a feed point and a feed conductor, and at least one of said first or second antennas comprises a first radiator and a second radiator, and at least one of said antennas comprises a third radiator; and wherein said first radiator comprises said feed point and said second radiator comprises a first end and a second end, said second end coupled to a ground and disposed farther from said first radiator than said first end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a dual band antenna comprising one partial antenna associated with a lower operating band of the antenna and a second partial antenna associated with an upper operating band, said partial antennas having a shared substrate, a shared feed point, wherein said method comprises:
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operating at least one of the partial antennas as two radiators; operating said first radiator and the radiator of the other partial antenna, which joins the shared feed point, as a unitary common element on the substrate surface; and short-circuiting said common element to ground from at least one point proximate to the feed point.
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19. A dual antenna of a radio device comprising:
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a first partial antenna to implement a lower operating band of the antenna; a second partial antenna to implement an upper operating band, said first and second partial antennas having a shared dielectric substrate which forms an integrated antenna component together with antenna radiators, the partial antennas having a shared feed poing and a shared feed conductor on the front surface of the substrate; wherein a part of the antenna component in one direction from a substrate cross section which leads through the feed point belongs to the first partial antenna, and a part of the antenna component in the opposite direction belongs to the second partial antenna; wherein at least one partial antenna comprises two radiators, the first of which joins the feed point and the second of which is adapted for connection to a ground plane; and wherein said first radiator and a radiator of the other partial antenna joining the shared feed point form a unitary common elements on the upper surface of the substrate, which element is configured for connection to the ground plane from at least one short-circuit point proximate to the feed point. - View Dependent Claims (20)
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21. An antenna component for use in a radio frequency device comprising:
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a first partial antenna implementing a lower operating band; and a second partial antenna implementing an upper operating band, said first and second partial antennas comprising; a shared dielectric substrate; a shared feed point; and a shared feed conductor disposed on a front surface of the substrate; wherein; a part of the antenna component in a first direction relative to a cross-section of the substrate which leads through the feed point is associated with the first partial antenna; and a part of the antenna component in the opposite direction is associated with the second partial antenna. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An antenna component for use in a radio frequency device comprising:
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a first partial antenna implementing a lower operating band; a second partial antenna implementing an upper operating band, said first and second partial antennas comprising a shared dielectric substrate; and a reactive matching component connected between an antenna feed conductor and a signal ground; wherein; a part of the antenna component in a first direction relative to a cross-section of the substrate which leads through the feed point is associated with the first antenna, and a part of the antenna component in the opposite direction is associated with the second partial antenna; and the first and second partial antennas comprise a shared feed point and a shared feed conductor disposed on a front surface of the substrate.
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41. An antenna component for use in a radio frequency device comprising:
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a first partial antenna implementing a lower operating band; and a second partial antenna implementing an upper operating band., said first and second partial antennas comprising a shared dielectric substrate, said shared substrate comprising a ceramic material; wherein; a part of the antenna component in a first direction relative to a cross-section of the substrate which leads through the feed point is associated with the first partial antenna and a part of the antenna component in the opposite direction is associated with the second partial antenna; and the first and second partial antennas comprise a shared feed point and a shared feed conductor disposed on a front surface of the substrate.
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Specification