Howtosignalprocessing
The formula for calculating the notch frequency is, notch frequency= 1/4πRC, where π equals 3.14, R is the resistance, and C is the capacitance.
- How is bandwidth of notch filter calculated?
- What is Q in notch filter?
- How does a notch filter work?
- What is the gain of notch filter?
How is bandwidth of notch filter calculated?
Thus, the function of a Notch Filter is to passing all those frequencies from zero (DC) up to lower cut-off frequency(fL) and above higher cut-off frequency(fH), and reject all those frequencies that lie in the bandwidth region i.e., BW= fH-fL.
What is Q in notch filter?
Second Order Notch Filters
An equivalent way of designing the filter is to specify the quality factor and obtain the 3 dB bandwidth. Quality factor is defined as the ratio of the notch or peak frequency F 0 and the 3 dB bandwidth BW . Mathematically, Q factor is given by Q = F 0 / BW .
How does a notch filter work?
A notch filter is a type of band-stop filter, which is a filter that attenuates frequencies within a specific range while passing all other frequencies unaltered. For a notch filter, this range of frequencies is very narrow. The range of frequencies that a band-stop filter attenuates is called the stopband.
What is the gain of notch filter?
The notch formed by R in parallel with the series LC can be shaped to compensate for the peaking produced by the amplifier and the parasitic capacitance. The result is 1-GHz bandwidth (−3 dB), 250-MHz gain flatness (0.1 dB) and less than 1-dB peaking for a gain equal to 1.
