The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2012
Filed:
Sep. 10, 2008
Hiroki Kimura, Tokyo, JP;
Chisato Maeda, Tokyo, JP;
Hiroki Kimura, Tokyo, JP;
Chisato Maeda, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
There is provided a switch circuit for switching whether to output an input signal, including: a transmission path that transmits the input signal from an input end to an output end of the switch circuit; a first semiconductor switch that is provided on the transmission path and switches whether to transmit the input signal; a second semiconductor switch that is opened when the first semiconductor switch is short-circuited, and that is short-circuited when the first semiconductor switch is opened, thereby grounding, to a ground potential, a high-frequency signal leaked to the transmission path between the first semiconductor switch and the output end; and a voltage controller that causes a potential difference on both ends of the second semiconductor switch when the second semiconductor switch is opened.