Method and system for sharing RF filters in systems supporting WCDMA and GSM
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United States of America Patent
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Jul 31, 2012
Grant Date -
Apr 3, 2008
app pub date -
Sep 29, 2006
filing date -
Sep 29, 2006
priority date (Note) -
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Abstract
Aspects of a method and system for sharing RF filters in systems supporting WCDMA and GSM are provided. A receiver in a wireless device enables receiving WCDMA signals and GSM signals. The WCDMA signals may be received via at least one duplexer within the wireless device. A processing path for the received WCDMA signals or a processing path for the received GSM signals may be selected within the receiver. The processing paths may share bandpass filtering and signal amplification. A gain in the shared signal amplification may be adjusted after filtering the received signals. For received WCDMA signals, the gain adjustment may be based on a gain provided to the received WCDMA signals before applying the shared bandpass filtering. At least one signal may be generated for selecting the processing path and/or for adjusting the shared signal amplification gain.
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