// S-Parameters › Smith Chart
Smith Chart Plotter
Interactive Smith Chart — enter impedance manually, add multiple labelled points, or upload a Touchstone file to plot an S11 trace. Hover to read impedance, VSWR and Γ at any point.
// Reference Impedance
Ω
// Add Impedance Point
Ω
Ω
// Touchstone S11 Trace
Drop .s1p / .s2p here
or click to browse
or click to browse
// Selected / Hover Readout
Impedance
—
|Γ|
—
VSWR
—
Return Loss
—
Γ Phase
—
// Plotted Points
No points plotted yet
// Smith Chart — Z₀ = 50 Ω · hover to read values
Constant R circles
Constant X arcs
Plotted points
S11 trace
// Key Formulas
Γ = (Z−Z₀)/(Z+Z₀) · Z = Z₀·(1+Γ)/(1−Γ)
VSWR = (1+|Γ|)/(1−|Γ|) · RL = −20·log₁₀|Γ| dB
Upper = Inductive (+jX) · Lower = Capacitive (−jX)
VSWR = (1+|Γ|)/(1−|Γ|) · RL = −20·log₁₀|Γ| dB
Upper = Inductive (+jX) · Lower = Capacitive (−jX)