Bandpass Filter Rechner — Formel

RLC Bandpass Filter

f_center = 1 / (2pi x sqrt(LC))

Bandwidth = R / (2pi x L)

Q = f_center / Bandwidth

Higher Q = narrower pass band.

Lösungsbeispiel

R=50, L=1 mH, C=10 nF.

  1. f_center = 1 / (2pi x sqrt(0.001 x 1e-8)) = 50,329 Hz
  2. BW = 50 / (2pi x 0.001) = 7,958 Hz
  3. Q = 50329 / 7958 = 6.33