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. 02, 2013
Filed:
Dec. 10, 2009
Hideki Tanaka, Hitachinaka, JP;
Manabu Hasegawa, Hitachi, JP;
Tsuyoshi Wakuda, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An object of the invention is to change over accurately the switch part between use condition and nonuse condition. A signal transmitting and receiving circuitfor transmitting and receiving signals comprises a tuning and matching circuitfor transmitting and receiving the signals, a signal communication wiretransmitting the signals, and a wavelength wirehaving a length (L) defined by a relational expression given in an Equation of L=N·(λ/4) where L: length of the wavelength wire, N: 1, 2, 3, . . . , and λ: wavelength. The circuitalso comprises a switch partchanging over between a grounded connection target and an ungrounded connection target. Further, the tuning and matching circuitis mutually connected to the signal communication wire, and the wavelength wireis constituted such that one end thereof is connected between the tuning and matching circuitand the signal communication wire, and the other end thereof is connected to the switch part