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. 13, 2014
Filed:
Apr. 21, 2010
Kazunori Nishimura, Kyoto, JP;
Toru Jibu, Osaka, JP;
Tetsuya Tsurunari, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An antenna sharer with both low loss and sharp attenuation characteristic in a wide band is achieved. Antennal sharerof the present invention includes first filterfor passing a signal in the first frequency band, and second filterfor passing a signal in the second frequency band higher than the first frequency band. First filterincludes a ladder filter that includes first series resonatorand second series resonatorwith an antiresonant frequency point higher than antiresonant frequency of first series resonator. Electromechanical coupling coefficient of first series resonatoris smaller than electromechanical coupling coefficient of second series resonator