Filter functions Four general filter functions are desirable: Band-pass filter: select only a desired band of frequencies Band-stop filter: eliminate

Filter functions Four general filter functions are desirable: Band-pass filter: select only a desired band of frequencies Band-stop filter: eliminate an undesired band of frequencies Low-pass filter: allow only frequencies below a cutoff frequency to pass High-pass filter: allow only frequencies above a cutoff frequency to pass http://en.wikipedia.org/wiki/RF_and_microwave_filter#Filter_functions http://en.wikipedia.org/wiki/RF_and_microwave_filter#Filter_...