Patent Document ID: 6137293
Application ID: 09218108
Patent Flag: 1

Claim One:
1. A measuring method for equivalent circuitry comprising the following steps: (1) applying an input voltage to a device under test (DUT), detecting a reflected signal from the DUT, and separating the reflected signal into at least one uniform transmission line section and at least one lumped element section; (2) converting the reflected signal and the input voltage into a reflected wave and an incident wave, respectively; (3) obtaining characteristic impedance of the uniform transmission line section via layer peeling transmission line synthesis and also the incident wave and reflected wave of the subsequent lumped element section; (4) obtaining a reflected step response from the incident wave and the reflected wave; (5) converting and simulating the step response obtained from the lumped element section into a simulated electrical circuit; (6) obtaining from the simulated electrical circuit next incident wave and next reflected wave which enter subsequent uniform transmission line section; and (7) repeating steps (3) to (6) until the characteristic impedance and the simulated electrical circuit relating to each section of the reflected signal are obtained.