Patent ID: 7061344

Claim:
A method for simulating a switch used to control operations of outputting a radio signal, the method comprising: establishing a first equivalent circuit, the first equivalent circuit comprising: an input port for inputting the radio signal; an output port for outputting the radio signal; a first block connected to the input port, the first block having a first intrinsic inductor and a first intrinsic resistor; a second block connected to the output port, the second block having a second intrinsic inductor and a second intrinsic resistor; a third block connected to the first block and the second block, the third block having a gate capacitor, a gate inductor, and a gate resistor; a first gate-substrate capacitor connected to the first block and the third block; a second gate-substrate capacitor connected to the second block and the third block; and a fourth block connected to the first gate-substrate capacitor and the second gate-substrate capacitor in series, the fourth block having a substrate capacitor, a first substrate resistor, and two second substrate resistors; and utilizing the first equivalent circuit to simulate the switch at a turned-off state.