There are four kinds of RF-IF filter which may be defined. Each different kind rejects or accepts signals in a different way, and using the appropriate kind of RF filter it is possible to accept the required signals and reject the ones which aren't desired.The file can be downloaded
Before using the SAW Filter, do a good job of grounding to minimize the coupling between the input and output. Otherwise, this coupling will cause the amplitude and group delay of the device to fluctuate. Note that the wave frequency is f = 1/TThe file can be downloaded
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