What is the quality factor for a band pass filter?

A band-pass filter can be characterized by its Q factor. The Q-factor is the reciprocal of the fractional bandwidth. A high-Q filter will have a narrow passband and a low-Q filter will have a wide passband. These are respectively referred to as narrow-band and wide-band filters.

What is true about quality factor of a filter?

Explanation: A band- pass filter has a pass band between two cut-off frequencies fH and fL. So, any frequency outside this pass band is attenuated. Explanation: Quality factor (Q) is the measure of selectivity, meaning higher the value of Q, the narrower its bandwidth.

When the gain of the filter is maximum at its Centre frequency the filter is?

total pass band gain
The gain of the filter is maximum at resonant or centre frequency and this is referred as total pass band gain. This pass band gain is denoted by ‘Amax’. For low pass filter this pass band starts from 0 Hz and continues until it reaches the resonant frequency value at -3 dB down from a maximum pass band gain.

How is gain of band pass filter calculated?

So all frequencies between the low cutoff frequecny and the high cutoff frequency are the passband of the bandpass filter. The gain of the circuit is determined by the formula, gain (AV)= -R2/R1. Thus, for example, to have a gain of 10, R2 must be 10 times the value of R1.

What happens to the quality factor when the resonant frequency increases?

Quality factor is directly proportional to resonant frequency. So, if resonant frequency increases quality factor increases.

What is second order band pass filter?

An active band pass filter is a 2nd Order type filter because it has “two” reactive components (two capacitors) within its circuit design. As a result of these two reactive components, the filter will have a peak response or Resonant Frequency ( ƒr ) at its “center frequency”, ƒc.