WO2014107962A1 - 一种低插损压电声波带通滤波器及实现方法 - Google Patents
一种低插损压电声波带通滤波器及实现方法 Download PDFInfo
- Publication number
- WO2014107962A1 WO2014107962A1 PCT/CN2013/082288 CN2013082288W WO2014107962A1 WO 2014107962 A1 WO2014107962 A1 WO 2014107962A1 CN 2013082288 W CN2013082288 W CN 2013082288W WO 2014107962 A1 WO2014107962 A1 WO 2014107962A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acoustic wave
- type
- piezoelectric acoustic
- wave resonator
- resonator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6483—Ladder SAW filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/205—Constructional features of resonators consisting of piezoelectric or electrostrictive material having multiple resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
- H03H9/568—Electric coupling means therefor consisting of a ladder configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
- H03H9/605—Electric coupling means therefor consisting of a ladder configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/703—Networks using bulk acoustic wave devices
Definitions
- the second type of piezoelectric acoustic wave resonator is a film bulk acoustic resonator or a solid state assembled resonator.
- the first type of piezoelectric acoustic wave resonator and the second type of piezoelectric acoustic wave resonator have basic A laminated structure comprising a lower electrode layer, a piezoelectric layer, and an upper electrode layer.
- a parallel branch having a ground end formed by a second type of piezoelectric acoustic wave resonator; wherein either end of the series branch is connected to a non-ground end of the parallel branch;
- the impedance value at the parallel resonant frequency of the first type of piezoelectric acoustic wave resonator is smaller than the impedance value at the parallel resonant frequency of the second type of piezoelectric acoustic wave resonator.
- FIG. 2 is a frequency response graph of the series resonator 101-1 and the parallel resonator 101-2 of FIG. 1.
- FIG. 3 is a frequency response graph of the piezoelectric acoustic wave bandpass filter unit 101 of FIG. 1.
- Fig. 8 is a graph showing the frequency response of the piezoelectric acoustic wave band pass filter unit 101 of Fig. 1 and the piezoelectric acoustic wave band pass filter unit 601 of Fig. 6.
- Figure 4 shows the acoustic dispersion curves for Type I and Type II bulk acoustic resonators, where the ordinate represents the frequency and the abscissa represents the propagation constant of zero. The intersection of the abscissa and the ordinate indicates that the propagation constant is an imaginary number to the left, and the intersection constant to the right indicates that the propagation constant is a real number. Each point on the dispersion curve represents the corresponding propagation constant at each operating frequency of the acoustic resonator.
- the propagation constant is an imaginary number corresponding to the evanescent wave, and the propagation constant is a real number corresponding to the traveling wave.
- FIG. 6 shows a piezoelectric acoustic wave band pass filter 600 of a ladder structure according to an embodiment of the present invention, comprising a plurality of cascaded acoustic band pass filter units, wherein the acoustic band pass filter unit comprises: a series branch of a piezoelectric acoustic wave resonator of the first type and a parallel branch having a ground end formed by a second type of piezoelectric acoustic wave resonator, wherein either end of the series branch and the parallel branch are ungrounded End connection, the impedance value at the series resonant frequency of the first type of piezoelectric acoustic wave resonator is smaller than the impedance value at the series resonant frequency of the second type piezoelectric acoustic wave resonator, and the first type of piezoelectric acoustic wave resonator is connected in parallel The impedance value at the resonant frequency is less than the impedance value
- the piezoelectric acoustic bandpass filter provided by the embodiment of the present invention is similar to the acoustic bandpass filter of the conventional trapezoidal structure, and is cascaded by the acoustic bandpass filter units 601, 602, ..., 60n. composition.
- the sonic bandpass filter unit 601 includes a series resonator 601-1 connected to the series branch and a parallel resonator 601-2 connected to the parallel branch.
- 60 ⁇ is similar to the acoustic bandpass filter unit 601.
- the implementation method of the low insertion loss piezoelectric acoustic wave band pass filter includes the following steps: Constructing a series branch using a first type of piezoelectric acoustic wave resonator;
- the impedance value at the series resonant frequency of the first type of piezoelectric acoustic wave resonator is smaller than the impedance value at the series resonant frequency of the second type piezoelectric acoustic wave resonator;
- Figure 7 is a graph showing the frequency response of the series resonator 101-1 and the parallel resonator 101-2 of Figure 1 and the series resonator 601-1 and the parallel resonator 601-2 of Figure 6, wherein the series resonance
- the inverter 101-1 and the parallel resonator 101-2 are all examples of a type I bulk acoustic wave resonator, and are compared with the frequency response of the series resonator 601-1 and the parallel resonator 601-2 of the present invention.
- the abscissa indicates the frequency
- the ordinate indicates the impedance.
- Curve 710 represents the frequency response curve of the parallel resonator 101-2 on the parallel of the conventional trapezoidal acoustic bandpass filter 100
- curve 720 represents the frequency response curve of the series resonator 101-1 on the series of the conventional trapezoidal acoustic bandpass filter 100
- Curve 730 represents the frequency response curve of the parallel resonator 601-2 of the trapezoidal acoustic bandpass filter 600 of the present invention
- curve 740 represents the frequency response of the series resonator 601-1 of the series of trapezoidal acoustic bandpass filters 600 of the present invention. curve.
- the impedance value of the series resonator 601-1 near the series resonance frequency is equivalent to the impedance value of the series resonator 101-1 near the series resonance frequency, and the parallel resonator 601
- the impedance value near the parallel resonant frequency of -2 is greater than the impedance value of the parallel resonator 101-2 near the parallel resonant frequency.
- the passband insertion loss performance of the acoustic band pass filter unit 601 is superior to the conventional acoustic band pass filter. Unit 101.
- Embodiments of the present invention can improve passband performance without affecting the out-of-band rejection of the piezoelectric acoustic bandpass filter, i.e., reduce passband insertion loss.
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015551958A JP2016504880A (ja) | 2013-01-11 | 2013-08-26 | 低挿入損失の圧電音響バンドパスフィルタ及び実現方法 |
| US14/760,090 US20150372658A1 (en) | 2013-01-11 | 2013-08-26 | Low-insertion-loss piezoelectric acoustic wave band-pass filter and realization method thereof |
| EP13870550.4A EP2930845B1 (en) | 2013-01-11 | 2013-08-26 | Low-insertion-loss piezoelectric acoustic wave band-pass filter and realization method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010233.5A CN103929148B (zh) | 2013-01-11 | 2013-01-11 | 一种低插损压电声波带通滤波器及实现方法 |
| CN201310010233.5 | 2013-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014107962A1 true WO2014107962A1 (zh) | 2014-07-17 |
Family
ID=51147247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/082288 Ceased WO2014107962A1 (zh) | 2013-01-11 | 2013-08-26 | 一种低插损压电声波带通滤波器及实现方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150372658A1 (zh) |
| EP (1) | EP2930845B1 (zh) |
| JP (1) | JP2016504880A (zh) |
| CN (1) | CN103929148B (zh) |
| WO (1) | WO2014107962A1 (zh) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109643984B (zh) * | 2016-06-21 | 2023-09-01 | 诺思(天津)微系统有限责任公司 | 一种梯形结构宽带压电滤波器 |
| CN109643982B (zh) * | 2016-08-30 | 2020-03-24 | 株式会社村田制作所 | 弹性波装置及其制造方法 |
| US10541673B2 (en) | 2016-10-28 | 2020-01-21 | Skyworks Solutions, Inc. | Acoustic wave filter including two types of acoustic wave resonators |
| US10250214B2 (en) * | 2016-10-31 | 2019-04-02 | Murata Manufacturing Co., Ltd. | Filter device, multiplexer, radio-frequency front end circuit, and communication device |
| US10263601B2 (en) * | 2016-10-31 | 2019-04-16 | Avago Technologies International Sales Pte. Limited | Tunable bulk acoustic resonator device with improved insertion loss |
| KR102303898B1 (ko) * | 2017-03-31 | 2021-09-23 | 가부시키가이샤 무라타 세이사쿠쇼 | 복합 필터 장치 |
| KR102066958B1 (ko) * | 2018-07-10 | 2020-01-16 | 삼성전기주식회사 | 필터 |
| DE102018125498B4 (de) * | 2018-10-15 | 2020-04-23 | RF360 Europe GmbH | Elektroakustisches HF-Filter mit verbesserter Leistung und Multiplexer-Komponente, die ein HF-Filter umfasst |
| CN109787581A (zh) * | 2018-11-28 | 2019-05-21 | 天津大学 | 具有带通和高通双重功能的基于体声波谐振器的滤波器 |
| DE102018131054B4 (de) * | 2018-12-05 | 2020-10-08 | RF360 Europe GmbH | Mikroakustisches HF-Filter |
| CN109831176B (zh) * | 2018-12-05 | 2023-02-17 | 天津大学 | 一种压电声波滤波器及双工器 |
| CN111342793B (zh) * | 2018-12-18 | 2023-09-26 | 天津大学 | 带通滤波器及提高其抑制水平的方法、双工器和电子设备 |
| CN111342806B (zh) * | 2018-12-18 | 2023-12-15 | 天津大学 | 具有兰姆波谐振器的压电滤波器、双工器和电子设备 |
| CN109831177A (zh) * | 2018-12-20 | 2019-05-31 | 天津大学 | 一种多阻带滤波器及其实现方法 |
| CN109936344A (zh) * | 2018-12-29 | 2019-06-25 | 天津大学 | 一种拆分结构谐振器 |
| EP4042567A4 (en) * | 2019-10-07 | 2023-07-05 | Intel Corporation | HYBRID RESONATORS |
| US10847222B1 (en) * | 2019-10-30 | 2020-11-24 | Micron Technology, Inc. | Timing control of voltage supply during polarity transition |
| CN110931922A (zh) * | 2019-11-25 | 2020-03-27 | 武汉大学 | 一种基于压电双模态谐振器的双通带滤波器 |
| CN111817687B (zh) * | 2020-06-30 | 2021-09-21 | 诺思(天津)微系统有限责任公司 | 滤波器设计方法和滤波器、多工器、通信设备 |
| CN114759899A (zh) * | 2021-01-08 | 2022-07-15 | 觉芯电子(无锡)有限公司 | 一种低插损声波带通滤波器及其实现方法 |
| CN113644892B (zh) * | 2021-06-30 | 2024-04-16 | 中国电子科技集团公司第十三研究所 | 带通滤波器 |
| CN113644894B (zh) * | 2021-06-30 | 2023-08-29 | 中国电子科技集团公司第十三研究所 | 空气腔型薄膜体声波谐振器滤波器及滤波器组件 |
| CN113346868A (zh) * | 2021-07-19 | 2021-09-03 | 天通瑞宏科技有限公司 | 一种声表面波滤波器 |
| CN114513187B (zh) * | 2021-12-24 | 2025-06-06 | 西安理工大学 | 基于tsv的阶梯型窄带压电薄膜体声波滤波器 |
| CN116169452B (zh) * | 2022-12-15 | 2023-09-22 | 北京芯溪半导体科技有限公司 | 滤波器设计方法、装置及相关设备 |
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2013
- 2013-01-11 CN CN201310010233.5A patent/CN103929148B/zh active Active
- 2013-08-26 US US14/760,090 patent/US20150372658A1/en not_active Abandoned
- 2013-08-26 WO PCT/CN2013/082288 patent/WO2014107962A1/zh not_active Ceased
- 2013-08-26 EP EP13870550.4A patent/EP2930845B1/en active Active
- 2013-08-26 JP JP2015551958A patent/JP2016504880A/ja active Pending
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| US20040130411A1 (en) * | 2002-02-12 | 2004-07-08 | Steve Beaudin | Band reject filters |
| CN1864326A (zh) * | 2003-10-06 | 2006-11-15 | 皇家飞利浦电子股份有限公司 | 谐振器结构及其制造方法 |
| CN1929304A (zh) * | 2005-09-08 | 2007-03-14 | 株式会社日立媒介电子 | 谐振型滤波器 |
| US20090079521A1 (en) * | 2005-12-02 | 2009-03-26 | Habbo Heinze | Bulk Acoustic Wave Resonator |
| WO2012052414A2 (de) * | 2010-10-20 | 2012-04-26 | Epcos Ag | Bandsperrfilter mit einer serienverschaltung von zumindest zwei pi-gliedern |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20150372658A1 (en) | 2015-12-24 |
| EP2930845A1 (en) | 2015-10-14 |
| EP2930845B1 (en) | 2017-10-25 |
| EP2930845A4 (en) | 2015-12-30 |
| CN103929148B (zh) | 2017-09-19 |
| JP2016504880A (ja) | 2016-02-12 |
| CN103929148A (zh) | 2014-07-16 |
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