Qualcomm AM band suppression filter circuit

Published:2011/6/20 6:15:00 Author:John | Keyword: suppression filter, AM band | From:SeekIC

Many shortwave receivers would be adversely affected in front of the critical frequency, even if the rest parts of the receiver work well. For example, the sensitivity and intermediate frequency (IF) performance may be a good, but the third-order non-linear intercept point, dynamic range, intermediation performance are not up to the standard. If such happens, the receiver may be overloaded or without enough sensitivity or not able to obtain the desired signal. A basic source for front-end overload is the local AM band signals. Signals nearby the radio are rather strong.



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