Chebyshev Tee LC Low Pass Filter Calculator

Enter value, select unit and click on calculate. Result will be displayed.

Cutoff Frequency:

Impedance Z₀:

Frequency Response Ripple:

Number of Components:

(1-11)

Inductance:	Capacitance:
Unit :	Unit :
L₁:	C₁:
L₂:	C₂:
L₃:	C₃:
L₄:	C₄:
L₅:	C₅:
L₆:

A Chebyshev Tee LC Low-Pass Filter Calculator is a tool used to design low-pass filters with a Chebyshev response in a T-configuration using inductors (L) and capacitors (C). Chebyshev filters are known for their steep roll-off and ripple in the passband, making them useful when fast attenuation after the cutoff frequency is more important than a perfectly flat response.

How a Chebyshev Tee LC Low-Pass Filter works:

Chebyshev Response: Provides a faster roll-off than Butterworth filters but introduces ripples in the passband.
T-Configuration: Two series inductors (L1, L2) and one shunt capacitor (C) connected in a "T" shape.
LC Components:
Inductors (L1, L2): Pass low-frequency signals and block high-frequency signals.
Capacitor (C): Shunts high-frequency signals to ground.
What the calculator does:
You typically input:

Cutoff frequency (Fc): The frequency where signal attenuation begins.
Passband ripple (dB): The allowable amount of ripple in the passband.
Load impedance (Z): The impedance of the connected load.
Filter order: The number of LC stages, which determines the steepness of attenuation.
The calculator then outputs the optimized L and C values based on Chebyshev polynomial coefficients and your design specs. For a second-order filter, the component values will vary based on the amount of ripple you choose.

Advantages of a Chebyshev Low-Pass Filter:

Faster roll-off compared to Butterworth filters.
Better attenuation of high-frequency noise.
Disadvantages:

Passband ripple — the more ripple, the steeper the roll-off.