单词	passband
释义	passband /ˈpɑːsband / noun A frequency band within which signals are transmitted by a filter without attenuation.A second bandpass filter of the at least two disparate bandpass filters has as a passband a second frequency band.... All radiation outside the hydrogen passband falls within the noise of the instrument. A more concrete advantage, applicable to most complex systems, is that extending the bandwidth provides better linearity and less phase shift within the passband.
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