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:
Oct. 24, 2006
Filed:
Oct. 22, 1999
Hiroyuki Nakamura, Katano, JP;
Makoto Sakakura, Uji, JP;
Toshio Ishizaki, Kobe, JP;
Jyunichi Yoshizumi, Nara, JP;
Hiroyuki Nakamura, Katano, JP;
Makoto Sakakura, Uji, JP;
Toshio Ishizaki, Kobe, JP;
Jyunichi Yoshizumi, Nara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A transmitting/receiving switch, in which a transmission terminal connected to a transmission circuit is connected to an antenna terminal through a first switching element, a filter for attenuating harmonic contents in a transmission signal, a phase-shift circuit for significantly increasing an impedance from a node toward said transmission terminal in a reception frequency band by phase-adjusting the amount of phase shift by performing phase adjustment according to the amount of the phase shift generated by said filter. Furthermore, the antenna terminal connected to an antenna ANT is connected to a reception terminal through the node and a second switching element, and the reception terminal is connected to a reception circuit Rx.