Card-based diversity antenna structure for wireless communications
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United States of America Patent
Stats
-
Sep 24, 2002
Grant Date -
Aug 1, 2002
app pub date -
Dec 13, 2000
filing date -
Dec 13, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A card-based diversity antenna structure includes a card and at least two antenna elements. The card has active circuitry attached thereto and connectors located at a first end thereof configured for engagement with an interface slot. The at least two antenna elements are attached to the card at a second end thereof and are coupled to the active circuitry. At least two antenna elements are sufficiently spaced apart so as to achieve spatial diversity. The polarizations of two of the at least two antenna elements may be orthogonal to each other so as to achieve polarization diversity. The antenna structure delivers good receive and transmit diversity performance and is well suited to the form factor limits imposed by the dimensions of small cards, such as PCMCIA cards. The configuration is very convenient for application in the 5 to 6 GHz frequency band.
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