Title:
埋め込み型境界リングを備えた結合共振器フィルタ
Document Type and Number:
Japanese Patent JP7405513
Kind Code:
B2
Abstract:
A coupled resonator filter includes a first resonator, a second resonator, one or more intervening layers, a first border ring, and a second border ring. The first resonator includes a first piezoelectric layer and a first electrode in contact with the first piezoelectric layer. The second resonator includes a second piezoelectric layer and a second electrode in contact with the second piezoelectric layer. The one or more intervening layers are between the first resonator and the second resonator and acoustically couple the first resonator and the second resonator. The first border ring is on the first electrode. The second border ring is on the second electrode. By providing both the first border ring and the second border ring, spurious modes in the coupled resonator filter may be suppressed, thereby improving the performance thereof.
Inventors:
Susan Kreuzer
Application Number:
JP2019062612A
Publication Date:
December 26, 2023
Filing Date:
March 28, 2019
Export Citation:
Assignee:
Cobo US, Incorporated
International Classes:
H03H9/17; H10N30/20; H10N30/87
Domestic Patent References:
| JP20135446A |
Foreign References:
| US20120218056 | ||||
| US20120218059 | ||||
| US20120218058 |
Attorney, Agent or Firm:
Osamu Yamamoto
Toru Miyamae
Motoharu Nakanishi
Shigeo Takeuchi
Yoshiyuki Tamura
Toru Miyamae
Motoharu Nakanishi
Shigeo Takeuchi
Yoshiyuki Tamura
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