Bandpass Filter Calculator
Calculate center frequency and bandwidth of a series RLC bandpass filter.
Ω
mH
nF
Center Frequency
50,329 Hz
Bandwidth (-3 dB)7,958 Hz
Quality Factor6.32
Center Frequency vs Resistance
RLC Bandpass Filter
f_center = 1 / (2pi x sqrt(LC))
Bandwidth = R / (2pi x L)
Q = f_center / Bandwidth
Higher Q = narrower pass band.
Example Calculation
R=50, L=1 mH, C=10 nF.
- 01f_center = 1 / (2pi x sqrt(0.001 x 1e-8)) = 50,329 Hz
- 02BW = 50 / (2pi x 0.001) = 7,958 Hz
- 03Q = 50329 / 7958 = 6.33
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