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:
May. 31, 2016
Filed:
Jul. 10, 2013
Ntt Docomo, Inc., Tokyo, JP;
Hiroshi Okazaki, Tokyo, JP;
Kunihiro Kawai, Tokyo, JP;
Shoichi Narahashi, Tokyo, JP;
Yuta Takagi, Tokyo, JP;
Takayuki Furuta, Tokyo, JP;
NTT DOCOMO, INC., Tokyo, JP;
Abstract
A wireless circuit that can be used in a plurality of frequency bands even if its duplexer is formed of current variable frequency filters is provided. The circuit includes a transmission-reception antenna, a variable frequency duplexer, a double-pole six-throw switch, an RFIC, and a controllerwhich executes switching operations in accordance with control signals. The RFICdetermines a pair of frequency bands for transmission and reception signals input to the variable frequency duplexerand generates and sends the control signals to perform switching control operations to connect a transmission port corresponding to the determined transmission frequency band with the transmission terminal of the variable frequency duplexerand to connect a reception port corresponding to the determined reception frequency band with the reception terminal of the variable frequency duplexerand to perform a frequency switching operation of the variable frequency duplexer