FR2818051B1 - Flitres a ondes acoustiques de surface a symetrie optimisee - Google Patents
Flitres a ondes acoustiques de surface a symetrie optimiseeInfo
- Publication number
- FR2818051B1 FR2818051B1 FR0015989A FR0015989A FR2818051B1 FR 2818051 B1 FR2818051 B1 FR 2818051B1 FR 0015989 A FR0015989 A FR 0015989A FR 0015989 A FR0015989 A FR 0015989A FR 2818051 B1 FR2818051 B1 FR 2818051B1
- Authority
- FR
- France
- Prior art keywords
- flitters
- acoustic wave
- surface acoustic
- symmetry
- optimized
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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
- H03H9/6436—Coupled resonator filters having one acoustic track only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/0023—Balance-unbalance or balance-balance networks
- H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
- H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
- H03H9/0052—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded
- H03H9/0057—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on the same side of the tracks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/14588—Horizontally-split transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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
- H03H9/644—Coupled resonator filters having two acoustic tracks
- H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
- H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0015989A FR2818051B1 (fr) | 2000-12-08 | 2000-12-08 | Flitres a ondes acoustiques de surface a symetrie optimisee |
PCT/FR2001/003885 WO2002047264A1 (fr) | 2000-12-08 | 2001-12-07 | Filtres a ondes acoustiques de surface a symetrie optimisee |
AU2002217214A AU2002217214A1 (en) | 2000-12-08 | 2001-12-07 | Surface acoustic waves filters with optimised symmetry |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0015989A FR2818051B1 (fr) | 2000-12-08 | 2000-12-08 | Flitres a ondes acoustiques de surface a symetrie optimisee |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2818051A1 FR2818051A1 (fr) | 2002-06-14 |
FR2818051B1 true FR2818051B1 (fr) | 2003-04-11 |
Family
ID=8857414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0015989A Expired - Fee Related FR2818051B1 (fr) | 2000-12-08 | 2000-12-08 | Flitres a ondes acoustiques de surface a symetrie optimisee |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002217214A1 (fr) |
FR (1) | FR2818051B1 (fr) |
WO (1) | WO2002047264A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6828879B2 (en) * | 2001-02-16 | 2004-12-07 | Sanyo Electric Co., Ltd. | Longitudinal coupled multiple mode surface acoustic wave filter |
FR2848745B1 (fr) * | 2002-12-17 | 2005-04-08 | Temex Sa | Filtre dms a faibles pertes d'insertion et symetrie optimisee |
DE102016125795A1 (de) * | 2016-12-28 | 2018-06-28 | Snaptrack, Inc. | Elektroakustisches Filter und Duplexer mit elektroakustischem Filter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2306821B (en) * | 1995-11-03 | 2000-05-31 | Advanced Saw Prod Sa | Electro-acoustic device |
JP3239064B2 (ja) * | 1996-05-28 | 2001-12-17 | 富士通株式会社 | 弾性表面波装置 |
JP3224202B2 (ja) * | 1996-11-28 | 2001-10-29 | 富士通株式会社 | 弾性表面波装置 |
-
2000
- 2000-12-08 FR FR0015989A patent/FR2818051B1/fr not_active Expired - Fee Related
-
2001
- 2001-12-07 WO PCT/FR2001/003885 patent/WO2002047264A1/fr not_active Application Discontinuation
- 2001-12-07 AU AU2002217214A patent/AU2002217214A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
FR2818051A1 (fr) | 2002-06-14 |
AU2002217214A1 (en) | 2002-06-18 |
WO2002047264A1 (fr) | 2002-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
CD | Change of name or company name | ||
TP | Transmission of property | ||
TP | Transmission of property | ||
PLFP | Fee payment |
Year of fee payment: 16 |
|
PLFP | Fee payment |
Year of fee payment: 17 |
|
PLFP | Fee payment |
Year of fee payment: 18 |
|
TP | Transmission of property |
Owner name: SNAPTRACK, INC., US Effective date: 20180228 |
|
PLFP | Fee payment |
Year of fee payment: 19 |
|
ST | Notification of lapse |
Effective date: 20200914 |