High frequency switch circuit

A high frequency switch circuit that makes use of a first control voltage applied to a first control terminal for controlling the connection between a common signal terminal and a first signal terminal and/or a second control voltage applied to a second control terminal for controlling the connection between the common signal terminal and a second signal terminal, whereby to selectively switch the connection of the common signal terminal to either the first signal terminal or the second signal terminal, the high frequency switch circuit comprising:

• a first signal section including a first MOSFET circuit one of whose main terminals is connected to the common signal terminal, the other of whose main terminals is connected to the first signal terminal and whose gate terminal is connected to the first control terminal, and a first rectifier circuit including at least one rectifier element one of whose ends is connected between the gate terminal of the first MOSFET circuit and the first control terminal and the other of whose ends is connected to ground, whereby the direction from the first control terminal towards ground is a forward direction;
• a second signal section including a second MOSFET circuit one of whose main terminals is connected to the common signal terminal, the other of whose main terminals is connected to the second signal terminal and whose gate terminal is connected to the second control terminal, and a second rectifier circuit including at least one rectifier element one of whose ends is connected between the gate terminal of the second MOSFET circuit and the second control terminal and the other of whose ends is connected to ground, whereby the direction from the second control terminal towards ground is a forward direction;
• and
• a connecting section connecting the forward-current input terminal side of at least one of the rectifier elements of the first rectifier circuit and either one of the main terminal sides of the first MOSFET circuit, and connecting the forward-current input terminal side of at least one of the rectifier elements of the second rectifier circuit and either one of the main terminal sides of the second MOSFET circuit.