Title:
NARROW BAND TRANSVERSAL TYPE SURFACE ACOUSTIC WAVE FILTER
Document Type and Number:
Japanese Patent JP2001196897
Kind Code:
A
Abstract:
To obtain a means that can realize a small-sized transversal type SAW filter with a narrow band.
In the transversal type surface acoustic wave filter where two IDT electrodes are placed on a piezoelectric substrate at a prescribed interval, the electrode periods of the two IDT electrodes are selected differently.
Inventors:
TANAKA MASAKI
Application Number:
JP2000001581A
Publication Date:
July 19, 2001
Filing Date:
January 07, 2000
Export Citation:
Assignee:
TOYO COMMUNICATION EQUIP
International Classes:
H03H9/64; H03H9/145; H03H9/25; (IPC1-7): H03H9/64; H03H9/145; H03H9/25
Previous Patent: HIGH FREQUENCY PIEZO-RESONATOR
Next Patent: HIGH FREQUENCY VARIABLE ATTENUATION CIRCUIT
Next Patent: HIGH FREQUENCY VARIABLE ATTENUATION CIRCUIT