Tools/Impedance Matching Calculator

Impedance Matching Calculator

Design L, Pi, T, and quarter-wave matching networks

Matching Network Design

ZsZL

Matching Network Components

Capacitor

Series (to load)

45.02 pF

Inductor

Shunt (at load)

168.81 nH

Network Q

0.71

Bandwidth

141.4 MHz

VSWR (before)

1.50:1

Mismatch Loss

0.18 dB

Network Type Comparison

NetworkComponentsBest ForQ Control
L-Network2 (L + C)Simple matching, wide bandwidthFixed by Z ratio
Pi Network3 (C-L-C)Low-pass filtering, harmonic rejectionAdjustable
T Network3 (L-C-L)High-pass filteringAdjustable
λ/4 Line1 (TL)Real impedances, microwaveFixed
L-networks are simplest but have fixed Q. Pi and T networks offer Q control for bandwidth tuning. Quarter-wave transformers are ideal for microwave and purely resistive impedances.

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