发明名称 Method and apparatus for switching between internal and external antennas in a device such as PC-Card modem
摘要 Method and apparatus for selectively connecting one of an internal and an external antenna to an RF signal component of a wireless modem use a sensor mounted on the circuit board of the wireless modem. The sensor senses the presence of a connector of the external antenna, and issues a corresponding sensor output signal to a controller that controls a switch in order to alternatively connect one of the internal and external antennas to the RF signal component.
申请公布号 US7295171(B2) 申请公布日期 2007.11.13
申请号 US20050253048 申请日期 2005.10.17
申请人 SIERRA WIRELESS, INC. 发明人 CAESAR DAVID
分类号 H01Q3/24 主分类号 H01Q3/24
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