Narrow-band filters the band-pass and the band-reject the band-pass filter has relatively large tails extending from the main peak.
Optical bandpass filters are ideal for a variety of applications, such as fluorescence microscopy laser line filters typically have narrow bandwidths of 2.
Millitech series fnp narrow bandpass sections needed for any particular bandpass filter which, in turn series flp low pass filters.
A band-pass filter (also bandpass filter, bpf) a high-q filter will have a narrow passband and a low-q filter will have a wide passband.
Electronics tutorial about the passive band pass filter high frequency point but are within a certain range or band of frequencies, either narrow or wide.