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:
Jan. 28, 2008
Filed:
Aug. 09, 2001
Yoshio Satoh, Kawasaki, JP;
Osamu Ikata, Kawasaki, JP;
Tsutomu Miyashita, Kawasaki, JP;
Takashi Matsuda, Kawasaki, JP;
Mitsuo Takamatsu, Kawasaki, JP;
Yoshio Satoh, Kawasaki, JP;
Osamu Ikata, Kawasaki, JP;
Tsutomu Miyashita, Kawasaki, JP;
Takashi Matsuda, Kawasaki, JP;
Mitsuo Takamatsu, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A SAW filter includes a first SAW resonator having a pair of terminals and a predetermined resonance frequency (f), the first SAW resonator being provided in a parallel arm of the SAW filter. A second SAW resonator has a pair of terminals and a predetermined resonance frequency (f) approximately equal to a predetermined antiresonance frequency of the first SAW resonator (f). The second SAW resonator is provided in a series arm of the SAW filter. An inductance element is connected in series to the first SAW resonator.