Patent ID: 8970279
Filing Date: 2015-03-03
Classification: H03K

Abstract:
1. A radio frequency switch circuit, comprising: a first switch circuit unit connected between a first node connected to a first signal port and a common node connected to a common port, and operated according to a first control signal having a low or high level; a second switch circuit unit connected between a second node connected to a second signal port and the common node and operated according to a second control signal having a phase opposite to that of the first control signal; a first shunt circuit unit connected between the second node and a common source node and operated according to the first control signal; a second shunt circuit unit connected between the first node and the common source node and operated according to the second control signal; and a source voltage generating unit generating a source voltage to be applied to the common source node, wherein the source voltage has a voltage level equal to that of a control signal having a low level from among the first control signal and the second control signal, and higher than a ground potential.