Patent ID: 9621158
Date: 2017-04-11
CPC Classifications: H03K

Claim:
1. A switch being applicable to transmit a high frequency signal from an input terminal to an output terminal therethrough, and the switch comprising: a switch device, connected between the input terminal and the output terminal, and comprising a control terminal and configured to be switched between ON and OFF according to a switch controlling signal provided to the control terminal; and a variable resistor, connected to the control terminal and configured to be changed to a first resistance while the switch device is ON, and to be changed to a second resistance while the switch device is OFF according to a resistor controlling signal, wherein the first resistance is higher than the second resistance, and the resistor controlling signal is changed corresponding to the switch controlling signal; wherein the switch device is a transmission gate consisted of an n-type metal-oxide-semiconductor field effect transistor and a p-type metal-oxide-semiconductor field effect transistor, and the control terminal comprises a gate of the n-type metal-oxide-semiconductor field effect transistor and a gate of the p-type metal-oxide-semiconductor field effect transistor.