Patent ID: 7511681
Filing Date: 2009-03-31
Classification: H01Q,H04B

Abstract:
1. An antenna arrangement for a portable communication apparatus, comprising: a main antenna connectable to an antenna input; a receive antenna connectable to an antenna output; an external antenna connector for receiving a terminal of an auxiliary antenna; an antenna detector arranged to detect the terminal when it is connected to said external antenna connector; a common filter, having a first, a second, and a third port, for separating signals to the antenna output and from the antenna input; a switch adapted to connect either said receive antenna or said first port to said antenna output, wherein the antenna input is operatively connected to said second port; and a DC voltage network, which is connected to the switch and the antenna detector, and which is arranged to automatically control the switch to connect the external antenna connector to the antenna output and disconnect the receive antenna from the antenna output, when the terminal is connected to the external antenna connector, wherein the main antenna is automatically disconnected from the antenna input by a connector switch when the terminal is connected to the external antenna connector; wherein said third port is connectable to either the main antenna or the external antenna connector, such that the antenna input is electrically or operatively connectable to the external antenna connector or the main antenna.