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:
Sep. 09, 2008
Filed:
Oct. 12, 2006
Masakazu Adachi, Osaka, JP;
Tadayoshi Nakatsuka, Osaka, JP;
Masakazu Adachi, Osaka, JP;
Tadayoshi Nakatsuka, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A high-frequency switching apparatus is composed of a transfer circuit unit including a plurality of FETs, and a shunt circuit unit including a plurality of FETs, as well. An electromagnetic wave absorption material element is connected to an end of the shunt circuit unit. To a connection point between the shunt circuit unit and the electromagnetic wave absorption material element, an external voltage terminal for fixing a potential at the point is connected. By this, a high-frequency switching apparatus is obtained which is excellent in isolation characteristics and is hard to break down even when a signal of a high voltage, such as an electrostatic surge, flows into the apparatus.