Q: Can we also map these points and contours onto the complex Γ plane? A: You bet! Let’s first rewrite the refection coefficient function in terms of line admittance Y ( z ) : Y − Y (z ) Γ (z ) = 0 Y0 + Y ( z ) Admittance and the Smith Chart Just like the complex impedance plane, we can plot points and contours on the complex admittance plane: Im = G