Patent ID: 7020453
Filing Date: 2006-03-28
Classification: H04B,H04W,Y02D

Abstract:
1. A high-frequency switch circuit, comprising: a plurality of switching field-effective transistors; a logic circuit under whose control said plurality of switching field-effective transistors conduct and shut themselves down in accordance with the state of a control input signal which is supplied from outside; a voltage raising circuit which raises a power source voltage, which is applied upon a power source voltage terminal from outside, and supplies the same to said logic circuit as an operating power source voltage; an oscillation circuit which operates, supplies an oscillation signal to said voltage raising circuit and makes said voltage raising circuit operate when said control input signal enters a particular state, but stops operating and stops said voltage raising circuit when said control input signal enters other state than said particular state; and a switch which is connected between said power source voltage terminal and an output terminal of said voltage raising circuit, characterized in that said switch is disconnected when said control input signal enters said particular state, and said switch conducts when said control input signal enters other state than said particular state.