Patent ID: 6205344
Filing Date: 2001-03-20
Classification: H04B,H04L,H04M,H04W

Abstract:
A communication device for transmitting and receiving communication signals, said communication device comprising:a transceiver circuit operative to transmit and receive communication signals;an integral antenna integrally associated with said communication device;a switching circuit coupled between said transceiver circuit and said integral antenna for decoupling said integral antenna from said transceiver circuit in response to a decoupling signal; andan adapter selectively couplable to said transceiver circuit and said switching circuit, said adapter having a radio frequency port operative to receive an external antenna for coupling radio frequency signals to said transceiver circuit, wherein said external antenna includes a resistor coupled to ground, said resistor pulling a node of said adapter to a predetermined value for generating said decoupling signal when said external antenna is attached to said adapter, and wherein said adapter, when said external antenna is attached to said radio frequency port, is operative for providing said decoupling signal to said switching circuit and is operative for automatically coupling said external antenna to said transceiver circuit.