Transmission and reflection charts for two-port single impedance networks

The transmission and reflection charts for two-port single series impedance or shunt admittance networks are described. The charts are shown to have a scaling property, which allows the same chart to be used for convenience when the scale of the chart is changed. They can be used as an alternative to the Smith chart for impedance or admittance measurements. If the charts are built into a test instrument, the transmission response can then be used for impedance or admittance measurements. Applications of the charts for the identification of pure resonance in dielectric or cavity resonators, quality factor measurements and the observation of the critical state of superconducting resonators are also presented