Wireless telephone antenna diversity system

Details Wireless telephone antenna diversity system Wireless telephone antenna diversity system

2005-08-02

2005-08-02

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S786000, C455S277100

Reexamination Certificate

active

06924766

ABSTRACT:
A system and method are provided for diversifying radiated electromagnetic communications in a wireless telephone device. The method comprises: mounting antennas internal to a wireless telephone device chassis; sensing conducted electromagnetic transmission line signals communicated by the antennas; and, selecting between the antennas in response to sensing the transmission line signals. In some aspects, sensing transmission line signals includes sensing transmission line signal power levels. For example, the transmission line signal power levels of transmitted signals reflected by the antennas are sensed. In other aspects, sensing transmission line signals includes sensing the radiated signals received at the antennas and conducted on the transmission line. For example, the power levels of the radiated signals conducted on the transmission lines can be sensed. Alternately, the radiated are received and decoded. Then, the antenna supplying the transmission line signal with the fewest number of decoding errors is selected.

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Acampora, A.S., et al., “System applications for wireless indoor communications”, Communications Magazine, IEEE Service Center, pp. 11-20, Aug. 1987.

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