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1. WO2022022438 - FILTER DESIGNING METHOD, FILTER, MULTIPLEXER, AND COMMUNICATION DEVICE

Publication Number WO/2022/022438
Publication Date 03.02.2022
International Application No. PCT/CN2021/108346
International Filing Date 26.07.2021
IPC
H03H 9/02 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
02Details
H03H 9/54 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
46Filters
54comprising resonators of piezo-electric or electrostrictive material
H03H 9/70 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
70Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source
H03H 9/13 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
02Details
125Driving means, e.g. electrodes, coils
13for networks consisting of piezo-electric or electrostrictive materials
CPC
H03H 9/02086
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
02007of bulk acoustic wave devices
02086Means for compensation or elimination of undesirable effects
H03H 9/02157
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
02007of bulk acoustic wave devices
02157Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness
H03H 9/131
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
125Driving means, e.g. electrodes, coils
13for networks consisting of piezo-electric or electrostrictive materials
131consisting of a multilayered structure
H03H 9/133
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
125Driving means, e.g. electrodes, coils
13for networks consisting of piezo-electric or electrostrictive materials
133for electromechanical delay lines or filters
H03H 9/542
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
46Filters
54comprising resonators of piezo-electric or electrostrictive material
542including passive elements
H03H 9/703
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
70Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
703Networks using bulk acoustic wave devices
Applicants
  • 诺思(天津)微系统有限责任公司 ROFS MICROSYSTEM (TIANJIN) CO, LTD. [CN]/[CN]
Inventors
  • 庞慰 PANG, Wei
  • 边子鹏 BIAN, Zipeng
Agents
  • 北京汉智嘉成知识产权代理有限公司 CHINA SMART INTELLECTUAL PROPERTY LTD.
Priority Data
202010735007.328.07.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) FILTER DESIGNING METHOD, FILTER, MULTIPLEXER, AND COMMUNICATION DEVICE
(FR) PROCÉDÉ DE CONCEPTION DE FILTRE, FILTRE, MULTIPLEXEUR ET DISPOSITIF DE COMMUNICATION
(ZH) 滤波器设计方法和滤波器、多工器、通信设备
Abstract
(EN) The present invention relates to the technical field of filters, and relates in particular to a filter designing method, a filter, a multiplexer, and a communication device. The method is used to appropriately configure, according to design indexes, the thickness of a raised portion at a connection end and a non-connection end of a top electrode in each of resonators arranged in series, each of resonators arranged in parallel, and a resonator in a bandwidth adjustment unit, thereby improving the insertion loss characteristics of a filter, reducing the insertion loss of the filter, and accordingly reducing production costs and increasing design flexibility to a certain extent.
(FR) La présente invention concerne le domaine technique des filtres, et concerne en particulier un procédé de conception de filtre, un filtre, un multiplexeur et un dispositif de communication. Le procédé est utilisé pour configurer de manière appropriée, selon des indices de conception, l'épaisseur d'une partie surélevée au niveau d'une extrémité de connexion et d'une extrémité de non connexion d'une électrode supérieure dans chacun des résonateurs disposés en série, chacun des résonateurs étant agencé en parallèle, et un résonateur dans une unité de réglage de bande passante, ce qui permet d'améliorer les caractéristiques de perte d'insertion d'un filtre, de réduire la perte d'insertion du filtre, et par conséquent de réduire les coûts de production et d'augmenter la flexibilité de conception dans une certaine mesure.
(ZH) 本发明涉及滤波器技术领域,特别地涉及一种滤波器设计方法和滤波器、多工器、通信设备。在该方法中,根据设计指标将串联谐振器、并联谐振器、以及带宽调节单元中的谐振器的顶电极的连接端和非连接端的抬高部厚度分别进行合理的设置,可进一步地改善滤波器的插损特性;同时,在实现良好插损特性的前提下,在一定程度上减少了生产成本,以及在一定程度上增加了设计的灵活性。
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