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:
Mar. 08, 2005
Filed:
Mar. 10, 2003
Norihiro Yahata, Aichi, JP;
Hitoshi Hirano, Aichi, JP;
Hiroshi Nagai, Ichinomiya, JP;
Naomi Nagata, Tajimi, JP;
Nobuhiro Kani, Kakamigahara, JP;
Norihiro Yahata, Aichi, JP;
Hitoshi Hirano, Aichi, JP;
Hiroshi Nagai, Ichinomiya, JP;
Naomi Nagata, Tajimi, JP;
Nobuhiro Kani, Kakamigahara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A bandpass filter disposed on a substrate includes one pair of ring Each of the ring resonators includes a pattern inductor, a resonance capacitor connected in parallel with the pattern inductor, and an input/output terminal connected with the pattern inductor via a coupling capacitor. The pattern inductors are connected with an impedance varying device, whereby the bandpass filter is capable of frequency adjustments.