Patent ID: 8653880

Claim:
A switch circuit comprising: first, second, and third input-output terminals; a first switching element connected between the first input-output terminal and the second input-output terminal; a second switching element connected between the third input-output terminal and a grounding point; a third switching element connected between the first input-output terminal and the third input-output terminal; a fourth switching element connected between the second input-output terminal and the grounding point; a first control voltage applying terminal connected to control terminals of the first and second switching elements; a second control voltage applying terminal connected to control terminals of the third and fourth switching elements; a first resistor connected between the control terminal of the first switching element and the first control voltage applying terminal; a second resistor connected between the control terminal of the second switching element and the first control voltage applying terminal; a first diode and a first inductor connected in series, wherein the series-connected first diode and first inductor are connected in parallel with the first resistor, and a second diode and a second inductor connected in series, wherein the series-connected second diode and second inductor are connected in parallel with the second resistor, and the first and second diodes have respective cathodes connected to the first control voltage applying terminal.