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:
Jan. 19, 2010
Filed:
Sep. 28, 2007
Hiroaki Takeuchi, Tokyo, JP;
Yoshiyuki Hata, Tokyo, JP;
Hiroaki Takeuchi, Tokyo, JP;
Yoshiyuki Hata, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
Provided is a switching apparatus connecting a transmission line designated among transmission lines, between input and output terminals, and preventing a signal at the terminal from leaking to a control wiring, becoming a noise, and being superposed onto a signal at the other end. The switching apparatus includes: a plurality of input series switches switching the connection state between one end of the transmission lines and the input terminal according to a control signal; a plurality of output series switches switching the connection state between the other end of the transmission lines and the output terminal according to a control signal; a plurality of control wirings that supply a control signal to the input series switch and the output series switch; and a noise removal section that is provided between the input series switch and the output series switch and that reduces a noise propagated via a control wiring.