Title:
SURFACE ACOUSTIC WAVE FILTER
Document Type and Number:
Japanese Patent JPH0555855
Kind Code:
A
Abstract:
PURPOSE: To easily select an appropriate value for coupling capacity to be impressed between SAW resonator filters in an SAW filter obtained by forming plural cascade-connected SAW resonator filters on a piezo-electric base.
CONSTITUTION: Plural capacitors 6, 7 are formed between a node of two SAW resonator filters 2, 3 and ground. These capacitors 6, 7 are arranged between the two filters 2, 3. The coupling capacity value can be changed by cutting out at least one of the connection parts 8, 9 between the capacitors 6, 7 and the ground.
Inventors:
MORII HARUO
SEIKE KIMIO
SEIKE KIMIO
Application Number:
JP21702691A
Publication Date:
March 05, 1993
Filing Date:
August 28, 1991
Export Citation:
Assignee:
MURATA MANUFACTURING CO
International Classes:
H03H3/10; H03H9/64; (IPC1-7): H03H3/10; H03H9/64
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)
Next Patent: LC FILTER