Patent ID: 7286001
Filing Date: 2007-10-23
Classification: H03K

Abstract:
1. A high-frequency switching device comprising: a plurality of high-frequency signal input/output terminals through which high-frequency signals are input/output, and a plurality of high-frequency switch circuit sections disposed between said plurality of high-frequency signal input/output terminals, wherein each of said plurality of high-frequency switch circuit sections comprises a series connection circuit of a plurality of field-effect transistors, either a high-level voltage or a low-level voltage is applied to the gate terminals of said plurality of field-effect transistors, whereby ON and OFF states are attained, furthermore, in said plurality of high-frequency switch circuit sections, that is, first and second high-frequency switch circuit sections operating reversely with each other, the first terminals of first resistor elements are connected to the intermediate connection points of the first plurality of field-effect transistors constituting said first high-frequency switch circuit section, the first terminals of second resistor elements are connected to the intermediate connection points of the second plurality of field-effect transistors constituting said second high-frequency switch circuit section, and the second terminals of said first resistor elements connected to said first high-frequency switch circuit section are connected to the second terminals of said second resistor elements connected to said second high-frequency switch circuit section.