the frequency region in which there is little signal attenuation. For a LPF this extends from DC to the start of the transition band (referred to as the corner of the passband). ~~~~~ go back with your browser back button. If lost, go home
a set of two frequencies between which the data will be passed
The range of frequencies along which a medium (such as a wire) will treat all frequencies equally in terms of distortion and signal degradation e.g. the local loop has a passband of 300-3400Hz Close this window
The frequency range that the filter is designed to pass with minimum attenuation. This is usually defined by the half power points (-3 dB).
A range of frequencies that has a non-zero lower limit and some upper limit.
The range of wavelengths transmitted by an optical filter.
The frequency interval that is propagated through a filter with minimum insertion loss.
The frequency range in which a filter is intended to pass signals.
A frequency range in which attenuation is guaranteed to be equal to or less than a designated value in dB, typically 3 dB.
The frequency range of a bandpass filter which has low insertion loss and therefore allows the signal to pass. A passband is defined by identifying its upper and lower frequency.
The range of frequencies a data line is capable of handling. Passband is often confused with bandwidth, the width of a channel contained within the passband.
Frequency band width in which the attenuation is the same or less than a specified value. Pass bandwidth is specified by minimum value, usually 3dB
The band of frequencies that passes through a filter with essentially no attenuation.
The region of usable frequency in electronics or wavelength in optics.
A wavelength range used to denote a specific part of the spectrum that passes through a filter. Passbands can be very narrow (10 nm for our Interference filters) or very large (100+ nm for color dichroic filters).
The range of frequencies passed by an audio low-pass, high-pass or bandpass filter. Normally measured at the -3 dB point: the frequency point where the amplitude response is attenuated 3 dB ( decibels) relative to the level of the main passband. For a bandpass filter two points are referenced: the upper and lower -3dB points. The -3dB point represents the frequency where the output power has been reduced by one-half. [Technical details: -3dB represents a multiplier of 0.707. If the voltage is reduced by 0.707, the current is also reduced by 0.707 (ohms law), and since power equals voltage-times-current, 0.707 times 0.707 equals 0.5, or half-power.
In telecommunications, optics, and acoustics, a passband is the portion of spectrum, between limiting frequencies (or, in the optical regime, limiting wavelengths), that is transmitted with minimum relative loss or maximum relative gain by a filtering device.