Complementary dual antenna system
First Claim
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1. A complimentary dual antenna system comprising:
- a first antenna comprising at least one first element on a structure for transmitting and receiving signals within a first frequency band;
a second antenna comprising at last one second element spaced apart from said at least one first element on the structure for transmitting and receiving signals within a second frequency band;
said first antenna having a first frequency selective surface, said first frequency selective space having a resonant grid pattern formed by the said at least one first element, wherein each of said at least one first element is tuned such that the first element is resonant and transparent at a frequency within said first frequency band and reflective at a frequency within said second frequency band; and
said second antenna having a second frequency selective surface, said second frequency selective surface formed by said at last one second element, said at least one second element each comprising a resonant opening tuned such that the said resonant opening is resonant and transparent at a frequency within said second frequency band and reflective at a frequency within said first frequency band.
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Abstract
The present invention provides a dual antenna system where a first antenna element has a metallic surface with openings that are resonant at frequencies other than the operating frequency of a second antenna element. The openings are sized such that the metallic components are relatively transparent at and near resonant frequencies of those openings. According to the present invention, the resonant frequencies of the openings may be the transmitting or receiving frequencies of the second antenna element, or of nearby antennas.
30 Citations
7 Claims
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1. A complimentary dual antenna system comprising:
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a first antenna comprising at least one first element on a structure for transmitting and receiving signals within a first frequency band;
a second antenna comprising at last one second element spaced apart from said at least one first element on the structure for transmitting and receiving signals within a second frequency band;
said first antenna having a first frequency selective surface, said first frequency selective space having a resonant grid pattern formed by the said at least one first element, wherein each of said at least one first element is tuned such that the first element is resonant and transparent at a frequency within said first frequency band and reflective at a frequency within said second frequency band; and
said second antenna having a second frequency selective surface, said second frequency selective surface formed by said at last one second element, said at least one second element each comprising a resonant opening tuned such that the said resonant opening is resonant and transparent at a frequency within said second frequency band and reflective at a frequency within said first frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification
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Current AssigneeEMS Technologies Canada Ltd. (Honeywell International Inc.)
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Original AssigneeEMS Technologies Canada Ltd. (Honeywell International Inc.)
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InventorsStrickland, Peter C., Best, Timothy E.
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Primary Examiner(s)Wong, Don
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Assistant Examiner(s)Dinh, Trinh Vo
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Application NumberUS10/301,692Publication NumberTime in Patent Office767 DaysField of SearchH01/Q 1.502, 343/909, 343/872, 343/781.P, 343/781.CA, 343/767, 343/770, 343/797US Class Current343/909CPC Class CodesH01Q 9/0414 in a stacked or folded conf...
