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Frequency introduction of Band-pass filter
Sep 06, 2018

A bandpass filter is a filter that passes through the frequency components of a certain frequency range, but attenuates the frequency components of other ranges to extremely low levels, as opposed to the concept of a band-stop filter. An example of a simulated bandpass filter is the resistance - inductance - capacitance circuit (RLC circuit). These filters can also be produced by combining a low pass filter with a high pass filter.

An ideal bandpass filter should have a completely flat passband, no amplification or attenuation within the passband, and all frequencies outside the passband are completely attenuated, in addition, the conversion outside the passband is completed in a very small frequency range.

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