Impedance Capacitor :  ` X = 1 / ( 2 * pi * f * C )`   or   ` C = 1 / ( 2 * pi * f * X )`


Impedance Inductor :  ` X = 2 * pi * f * L`   or   ` L = X / ( 2 * pi * f )`

Where :
X = Impedance in [Ω]
f = Frequency in [Hz]
C = capacitance in [F]
L = inductance in [H]

We want to design an ω-1 lowpass filter for 100 MHz in a 50 Ω system. The calculator yields 31.831 pF and 79.577 nH. Our filter would then look like : shunt capacitor of 33 pF, series inductor of 82 nH and a shunt capacitor of 33 pF.

We want to design an ω-1 highpass filter for 50 MHz in a 50 Ω system. The calculator yields 63.662 pF and 159.155 nH. Our filter would then look like : series inductor of 150 nH, shunt capacitor of 68 pF and a series inductor of 150 nH.

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