Title:
弾性表面波素子、分波器および通信装置
Document Type and Number:
Japanese Patent JP7132841
Kind Code:
B2
Abstract:
To provide a SAW element that can reduce a loss near an antiresonance frequency.SOLUTION: In a SAW resonator 1, an IDT electrode 7 has a plurality of electrode fingers 17 extending in a D2 direction in parallel with each other on a top face 3a of a piezoelectric material 3. Reflectors 9 are located on both ends in a D1 direction with respect to one IDT electrode 7. At least one of a plurality of insertion conductors 11 is located on each of both ends in the D1 direction of the IDT electrode 7. Each of the plurality of insertion conductors 11 has an even number of insertion electrode fingers 25 and a pair of connection parts 27. The even number of insertion electrode fingers 25 extend in parallel with the plurality of electrode fingers 17. The pair of connection parts 27 connect the even number of insertion electrode fingers 25 with each other on both sides in the D2 direction. In each of the plurality of insertion conductors 11, the insertion electrode fingers 25 on both sides in the D1 direction of the even number of insertion electrode fingers 25 are adjacent to any ones of the plurality of electrode fingers 17.SELECTED DRAWING: Figure 1
Inventors:
Tetsuya Kishino
Application Number:
JP2018235643A
Publication Date:
September 07, 2022
Filing Date:
December 17, 2018
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
H03H9/145
Domestic Patent References:
| JP4207618A | ||||
| JP2002319842A | ||||
| JP2004007093A | ||||
| JP8023256A | ||||
| JP2008098902A | ||||
| JP2014229916A |
Foreign References:
| WO2016121818A1 |
Attorney, Agent or Firm:
Yasuhiro Iijima