Telecommunications – Transmitter and receiver at same station
Reexamination Certificate
2005-12-20
2005-12-20
Nguyen, Lee (Department: 2682)
Telecommunications
Transmitter and receiver at same station
C455S103000, C455S552100
Reexamination Certificate
active
06978121
ABSTRACT:
The present invention is a method and apparatus for operating a dual-mode radio (DMR) in a wireless communication system. The present invention provides “coexistence” or cooperation of Bluetooth™ and 802.11 devices operating in close proximity to each other within a DMR. The present inventive method and apparatus reduces reception errors and prevents saturation of the Bluetooth™ devices caused by 802.11 transmissions. The present inventive antenna switching method provides a means for coupling multiple antennas to Bluetooth™ and 802.11 transmit and receive devices. Saturation of the Bluetooth™ receive devices is prevented by electrically isolating the Bluetooth™ receive devices from antennas used by the 802.11 device during 802.11 transmissions. The antenna switching apparatus includes a plurality of switches capable of selectively coupling and decoupling first and second antennas to an 802.11 and a Bluetooth™ device.
REFERENCES:
patent: 6128476 (2000-10-01), Fujita
patent: 6560443 (2003-05-01), Vaisanen et al.
patent: 2004/0029619 (2004-02-01), Liang et al.
“Specification of the Bluetooth System”, Specification vol. 1, Version 1.1, Part B, Section 1, pp. 41-42, Section 2.1, p. 43, Section 4.1-2, pp. 47-50, Section 10-9, p. 120 and Section 11, pp. 126-137, published Feb. 22, 2001.
Alpha Industries, Inc., PHEMT GaAs IC SPDT Switch DC-3 GHz, AS179-92, published Aug., 2000.
Bourk Terrance Raymond
Lane Mark
Murphy Glenn
Yamasaki David Akira
Nguyen Lee
RFMD WPAN, INC
Withrow & Terranova , PLLC
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