Читать книгу Handbook of Microwave Component Measurements - Joel P. Dunsmore - Страница 131

Reflection conversions are computed from the S11 trace and are essentially the same values as presented by impedance or admittance readouts of the Smith chart markers. Thus, Z‐reflection conversion would be used with the circuit description from Figure 2.40a and display the impedance in the real part of the result and the reactance in the imaginary part of the result. Y‐reflection would be used with the circuit of Figure 2.40b and display the conductance in the real part and the susceptance in the imaginary part of the result. The computations for these conversions are

(2.25)

Typically, these conversions would be used on one‐port devices and measurements. If it is used on a 2‐port device, one must remember that the load impedance will affect the measured value of the Z‐ or Y‐reflected conversion.