ELASTIC WAVE DEVICE
First Claim
Patent Images
1. An elastic wave device comprising:
- a piezoelectric substrate; and
an electrode pattern provided on a surface of the piezoelectric substrate and defining elastic wave filters;
whereinthe electrode pattern includes;
n filter electrodes disposed along a first direction where n is an integer that satisfies n≥
3;
a first terminal electrode and a second terminal electrode corresponding to each of the n filter electrodes; and
a ground terminal electrode corresponding to each of the n filter electrodes;
the n filter electrodes include;
a first filter electrode at a first end of the piezoelectric substrate in the first direction, a second filter electrode at a second end of the piezoelectric substrate in the first direction, and a third filter electrode different from the first and second filter electrodes;
the ground terminal electrode corresponding to the third filter electrode is disposed between the third filter electrode and a filter electrode of the n filter electrodes adjacent to the third filter electrode; and
no other filter electrode is disposed between the first filter electrode at the first end of the piezoelectric substrate and a ground terminal electrode connected thereto, between the second filter electrode at the second end of the piezoelectric substrate and a ground terminal electrode connected thereto, and between the third filter electrode and a ground terminal electrode connected thereto.
1 Assignment
0 Petitions
Accused Products
Abstract
An elastic wave device includes a piezoelectric substrate, filter electrodes, input terminal electrodes, output terminal electrodes, and ground terminal electrodes. The filter electrodes are disposed along a first direction. The ground terminal electrodes corresponding to the filter electrodes are respectively disposed between adjacent filter electrodes, and are common to the adjacent filter electrodes.
0 Citations
12 Claims
-
1. An elastic wave device comprising:
-
a piezoelectric substrate; and an electrode pattern provided on a surface of the piezoelectric substrate and defining elastic wave filters;
whereinthe electrode pattern includes; n filter electrodes disposed along a first direction where n is an integer that satisfies n≥
3;a first terminal electrode and a second terminal electrode corresponding to each of the n filter electrodes; and a ground terminal electrode corresponding to each of the n filter electrodes; the n filter electrodes include; a first filter electrode at a first end of the piezoelectric substrate in the first direction, a second filter electrode at a second end of the piezoelectric substrate in the first direction, and a third filter electrode different from the first and second filter electrodes; the ground terminal electrode corresponding to the third filter electrode is disposed between the third filter electrode and a filter electrode of the n filter electrodes adjacent to the third filter electrode; and no other filter electrode is disposed between the first filter electrode at the first end of the piezoelectric substrate and a ground terminal electrode connected thereto, between the second filter electrode at the second end of the piezoelectric substrate and a ground terminal electrode connected thereto, and between the third filter electrode and a ground terminal electrode connected thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification