Electronic device and method for estimating scattering parameters of two-port network

An electronic device, comprising:

• a two-port network, having at least one state corresponding to at least one set of scattering parameters (S-parameters);
• a directional coupler, configured to transmit a desired signal to the two-port network and receive a forward signal and a reverse signal corresponding to the desired signal from the two-port network;
• an input calibration kit, connected to an output port of the directional coupler, configured to provide a switchable input impedance;
• an output calibration kit, connected to an output port of the two-port network, configured to provide a switchable output impedance;
• and
• a control switch, connected between the output port of the directional coupler and an input port of the two-port network;
• wherein:
• during a first phase, the control switch is turned off, multiple input calculation results are calculated according to the forward signal and the reverse signal by setting the input switchable impedance to be multiple input impedances, respectively, wherein the multiple input impedances are different from one another;
• and
• during a second phase, the control switch is turned on, multiple output calculation results are calculated according to the forward signal and the reverse signal by setting the output switchable impedance to be multiple output impedances, respectively;
• wherein the at least one set of S-parameters is estimated according to the multiple input calculation results and the multiple output calculation results.