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:
Dec. 11, 2012
Filed:
Aug. 29, 2008
Hiromichi Yoshikawa, Kirishima, JP;
Shinji Isoyama, Setagaya-ku, JP;
Katsuro Nakamata, Kirishima, JP;
Hiromichi Yoshikawa, Kirishima, JP;
Shinji Isoyama, Setagaya-ku, JP;
Katsuro Nakamata, Kirishima, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
An ultra-wideband bandpass filter having two adequately-wide pass bands, and a wireless communication module and a wireless communication apparatus which employ the bandpass filter are provided. In a bandpass filter, first resonant electrodes are arranged on a first interlayer of a multilayer body in an interdigital form; a plurality of second resonant electrodes are arranged on a second interlayer in an interdigital form; and an input coupling electrode and an output coupling electrode are arranged on a third interlayer located between the first interlayer and the second interlayer. The input coupling electrode faces an input-stage first resonant electrode and an input-stage second resonant electrode in an interdigital form. The output coupling electrode faces an output stage first resonant electrode and an output-stage second resonant electrode in an interdigital form.