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:
Jun. 26, 2007
Filed:
Apr. 25, 2006
Masanori Ueda, Yokohama, JP;
Osamu Kawachi, Yokohama, JP;
Motoyuki Tajima, Yokohama, JP;
Kenya Hashimoto, Funabashi, JP;
Takuya Abe, Sagamihara, JP;
Masanori Ueda, Yokohama, JP;
Osamu Kawachi, Yokohama, JP;
Motoyuki Tajima, Yokohama, JP;
Kenya Hashimoto, Funabashi, JP;
Takuya Abe, Sagamihara, JP;
Fujitsu Media Devices Limited, Yokohama, JP;
Abstract
A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb electrodes formed between the pair of reflective electrodes on the piezoelectric substrate, wherein, in regard to the neighboring two comb electrodes among the plurality of comb electrodes, an electrode pitch of one comb electrode is set so that continuously varying phases of surface acoustic waves respectively generated by the two comb electrodes are obtained in a gap opposite to an outermost finger electrode of the other neighboring comb electrode.