Impedance Matching (L-match)
Calculate Impedance Matching (L-match) instantly with the exact formula and a worked example.
Impedance Matching (L-match)
Source resistanceΩ
Load resistanceΩ
FrequencyMHz
Quality factor Q
1.732
Series reactance X
86.6Ω
Shunt reactance X
115.5Ω
Inductance L
0.985µH
Capacitance C
98.5pF
Bandwidth ≈ 2f/Q (loaded Q = Q/2)
16.166MHz
More about: Impedance Matching (L-match)
What it calculates
The “Impedance Matching (L-match)” calculator computes Quality factor Q from 3 parameters: source resistance (Ω), load resistance (Ω), frequency (MHz).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Source resistance = 50 Ω, Load resistance = 200 Ω, Frequency = 14 MHz the result is 1.73 (Low-pass network: series L on the lower-R side, shunt C on the higher-R side).
How to use
- Enter source resistance, load resistance and frequency — each field above is adjustable with a slider.
- Quality factor Q is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Impedance Matching (L-match) calculated?
The Impedance Matching (L-match) calculator computes Quality factor Q from source resistance, load resistance, frequency. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Impedance Matching (L-match) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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