WO2025000170 - A BULK ACOUSTIC WAVE RESONATOR
National phase entry:
Publication Number
WO/2025/000170
Publication Date
02.01.2025
International Application No.
PCT/CN2023/102254
International Filing Date
26.06.2023
Title **
[English]
A BULK ACOUSTIC WAVE RESONATOR
[French]
RÉSONATEUR À ONDES ACOUSTIQUES DE VOLUME
Applicants **
HUAWEI TECHNOLOGIES CO., LTD.
Inventors
PLESSKI, Viktor
ZHANG, Naiqing
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
CNIPA
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1679 | |
| EPO | Filing, Examination, Granting | 12317 | |
| Japan | Filing, Examination, Granting | 2229 | |
| South Korea | Filing, Examination, Granting | 2070 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
23,035
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The invention allows a structure for a bulk acoustic wave resonator that enables an increase in piezoelectric coupling and in suppression of parasitic modes. The disclosed grooves be-tween interdigital transducer (IDT) electrodes decrease the generation of parasitic modes and block their propagation and resonant accumulation of their amplitudes. Furthermore, the disclosed grooves between the IDT electrodes suppress high-order modes along a horizontal direction and increase a resonance-antiresonance frequency gap of the bulk acoustic wave resonator.[French]
L'invention permet d'obtenir une structure pour un résonateur à ondes acoustiques de volume qui permet une augmentation du couplage piézoélectrique et la suppression de modes parasites. Les rainures entre des électrodes de transducteur interdigité (IDT) diminuent la génération de modes parasites et bloquent leur propagation et l'accumulation résonante de leurs amplitudes. En outre, les rainures décrites entre les électrodes IDT suppriment des modes d'ordre élevé le long d'une direction horizontale et augmentent un espace de fréquence de résonance-antirésonance du résonateur à ondes acoustiques de volume.