Mobile station acquisition state antenna tuning systems and methods
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United States of America Patent
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Sep 14, 2010
Grant Date -
Aug 17, 2006
app pub date -
Feb 17, 2005
filing date -
Feb 17, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Wireless communication device tuning an antenna matching circuit to favor a receive band efficiency over a transmit band efficiency in an acquisition state. Systems and methods are provided that increase the antenna efficiency in the receive band when the wireless communication device is searching for a synchronization message in order to acquire a communication channel. The antenna efficiency may be changed incrementally or may be optimized completely for the receive frequency. The increase in antenna efficiency in the receive band is accomplished by tuning the antenna matching circuit. One way to tune the antenna matching circuit is to apply a voltage to a ferro-electric capacitor in the matching circuit, thereby changing the capacitance of the ferro-electric capacitor, thereby changing the impedance of the matching circuit.
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