Title:
MOUNTING SUBSTRATE OF SURFACE ACOUSTIC WAVE ELEMENT
Document Type and Number:
Japanese Patent JP2003037343
Kind Code:
A
Abstract:
To solve a problem that a parasitic capacitive component formed by the pattern of a surface acoustic wave element and the GND pattern on the rear surface of a mounting substrate has an increasing trend.
In a mounting substrate 2 having a conductive film 1 on the side opposite to the side for mounting a surface acoustic wave element 3, the mounting substrate structure has a space 4 thinner than the substrate 2 over a range wider than the surface acoustic wave element region and opening to the side for mounting the surface acoustic wave element 3 wherein a constant distance is kept between the pattern of the surface acoustic wave element and the mounting substrate.
Inventors:
HARIO TOSHIO
Application Number:
JP2001222441A
Publication Date:
February 07, 2003
Filing Date:
July 24, 2001
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC
International Classes:
H05K1/18; H03H9/25; (IPC1-7): H05K1/18; H03H9/25