Tri-band antenna
First Claim
1. A tri-band antenna comprising:
- a pair of antenna elements each having two opposite ends, in which a first of said antenna elements operates to provide a first frequency band, and a second of said antenna elements operates to provide second and third frequency bands;
a first member fixed to a first of said ends of each of said antenna elements, in which said antenna elements extend from said first member;
a second member couples said antenna elements to each other between said first and second ends of said antenna elements in which said second member is spaced from said first member a distance to adjust the operation of said tri-band antenna in at least said first frequency band; and
a third member attachable to said first member to provide said antennal elements, via said first member, with a common signal path for transmission and reception of signals in all three bands.
2 Assignments
0 Petitions
Accused Products
Abstract
A tri-band antenna (10) is provided having a pair of antenna elements (12, 14), in which the first antenna element (14) operates in a first UHF frequency band, and the second antenna element (12) operates in a second VHF band and a third cellular frequency band. The bottom end (12a, 14a) of each of the antenna elements (12, 14) is fixed into a first member (16) from which the antenna elements extend parallel and spaced apart from each other to their different respective heights. A second member (13) couples the antenna elements (12, 14) to each other at a distance from the first member (16) to adjust the operation of the tri-band antenna (10) in at least the UHF band. A base member (19) is provided for mounting the tri-band antenna (10) along a surface of a vehicle. A signal feed member (20) extends through the base member (19) and has one end (20a) attached to the first member (16) and another end (20b) providing a RF connector. The signal feed member (20) provides the antenna elements (12, 14), via the first member (16), with a common signal path for transmission and reception of RF signals in all three bands.
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Citations
19 Claims
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1. A tri-band antenna comprising:
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a pair of antenna elements each having two opposite ends, in which a first of said antenna elements operates to provide a first frequency band, and a second of said antenna elements operates to provide second and third frequency bands; a first member fixed to a first of said ends of each of said antenna elements, in which said antenna elements extend from said first member; a second member couples said antenna elements to each other between said first and second ends of said antenna elements in which said second member is spaced from said first member a distance to adjust the operation of said tri-band antenna in at least said first frequency band; and a third member attachable to said first member to provide said antennal elements, via said first member, with a common signal path for transmission and reception of signals in all three bands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for providing an antenna having first, second and third separate frequency bands using a pair antenna elements in which one of said antenna elements operates to provide a first frequency band, and the other of said antenna elements operates to provide second and third frequency bands, said method comprising the steps of:
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fixably engaging each of said antenna elements to a first member in which said antenna elements extend away from said first member; and coupling a second member to each of said antenna elements spaced a distance from said first member to adjust the operation of at least said one of said antenna elements in said first frequency band. - View Dependent Claims (16, 17)
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18. A tri-band antenna comprising:
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a first vertical antenna element resonant in a UHF band; a second vertical antenna element resonant in a VHF band and a cellular frequency band; a first horizontal member having an opening for retaining one end of each of said first and second antenna elements; and a second horizontal member having an opening through which each of said first and second antenna elements extend and said second horizontal member is spaced a distance above said first horizontal member to adjust at least said UHF band of said tri-band antenna. - View Dependent Claims (19)
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Specification