This T matching network calculator designs a T-section impedance-matching network for a chosen loaded Q. Enter the source and load resistance and target Q above.
Design equations
Virtual R = Rmin × (Q² + 1) The T network is two back-to-back L-sections that each match up to the virtual resistance.
Example
50 Ω to 200 Ω, Q = 5: virtual R = 50 × (25 + 1) = 1300 Ω, then solve two L-sections to that value.
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Frequently Asked Questions
What is a T matching network?
It is two L-sections that match up to a high virtual resistance, giving a series-shunt-series T shape.
How is a T network different from a pi network?
A T network matches up through a high virtual resistance; a pi network matches down through a low one. Both set Q.
When do I use a T network?
When you need a specific loaded Q and the T topology suits your component values better than a pi.