Rectangular waveguide cutoff frequency

The cutoff frequency of a device (microphone, amplifier, loudspeaker) is the frequency at which the output power level is decreased to a value of (−)3 dB below the input power level (0 dB) . ● (−)3 dB corresponds to a factor of ½ = 0.5, which is 50% of the input power (half the value).

In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system’s frequency response at which energy flowing through the system begins to be reduced (attenuated or reflected) rather than passing through .

We can write the cutoff frequency equation for RC filter circuit as: f c = 1 / (2 * π * R * C ) . fc = 636.6 Hz .20 Oca 2022

For any filtering circuits such as RC circuits, the cutoff frequency is a very important characteristic. At this point, the amount of attenuation due to the filter starts to increase swiftly . To indicate how long the amplifier gain can remain constant to frequency, we need to define a range of frequencies.17 Ağu 2020