IT1056887B - Trasduttore di onde di superficie elstiche - Google Patents
Trasduttore di onde di superficie elsticheInfo
- Publication number
- IT1056887B IT1056887B IT7620880A IT2088076A IT1056887B IT 1056887 B IT1056887 B IT 1056887B IT 7620880 A IT7620880 A IT 7620880A IT 2088076 A IT2088076 A IT 2088076A IT 1056887 B IT1056887 B IT 1056887B
- Authority
- IT
- Italy
- Prior art keywords
- surface wave
- wave transducer
- transducer
- wave
- Prior art date
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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
- H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/08—Subsequent treatment of concentrated product
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/08—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
- H03H3/10—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves for obtaining desired frequency or temperature coefficient
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50026859A JPS51101445A (en) | 1975-03-04 | 1975-03-04 | Danseihyomenhatoransujuusaa |
JP50026858A JPS51101444A (en) | 1975-03-04 | 1975-03-04 | Danseihyomenhatoransujuusaa |
JP10765875A JPS5230361A (en) | 1975-09-04 | 1975-09-04 | Frequency adjustment method for elastic surface wave transducer |
JP15214475A JPS5275058A (en) | 1975-12-18 | 1975-12-18 | Process for waste oil liquid containing non-ion surface active agent |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1056887B true IT1056887B (it) | 1982-02-20 |
Family
ID=27458588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT7620880A IT1056887B (it) | 1975-03-04 | 1976-03-04 | Trasduttore di onde di superficie elstiche |
Country Status (4)
Country | Link |
---|---|
US (1) | US4038615A (it) |
DE (1) | DE2607837C2 (it) |
GB (1) | GB1538242A (it) |
IT (1) | IT1056887B (it) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5941602B2 (ja) * | 1978-04-18 | 1984-10-08 | 松下電器産業株式会社 | 表面弾性波素子 |
US4243960A (en) * | 1978-08-14 | 1981-01-06 | The United States Of America As Represented By The Secretary Of The Navy | Method and materials for tuning the center frequency of narrow-band surface-acoustic-wave (SAW) devices by means of dielectric overlays |
JPS5687913A (en) * | 1979-12-19 | 1981-07-17 | Matsushita Electric Ind Co Ltd | Surface elastic wave element |
JPS5741100A (en) * | 1980-08-23 | 1982-03-06 | Kureha Chem Ind Co Ltd | Ultrasonic probe |
JPS57145419A (en) * | 1981-03-05 | 1982-09-08 | Clarion Co Ltd | Surface acoustic wave element |
US4511816A (en) * | 1982-03-11 | 1985-04-16 | Nobuo Mikoshiba | Surface acoustic wave device using an elastic substrate and an aluminum nitride piezoelectric film |
JPS5964908A (ja) * | 1982-10-05 | 1984-04-13 | Nobuo Mikoshiba | 弾性表面波素子 |
JP3781435B2 (ja) * | 1997-05-08 | 2006-05-31 | 株式会社東芝 | 弾性境界波デバイス及びその製造方法 |
US6339276B1 (en) * | 1999-11-01 | 2002-01-15 | Agere Systems Guardian Corp. | Incremental tuning process for electrical resonators based on mechanical motion |
WO2003075458A1 (en) * | 2002-03-06 | 2003-09-12 | Matsushita Electric Industrial Co. Ltd. | Surface acoustic wave filter, balanced type circuit, and communication apparatus |
JP4535067B2 (ja) * | 2004-03-29 | 2010-09-01 | 株式会社村田製作所 | 弾性境界波装置の製造方法及び弾性境界波装置 |
JP5724262B2 (ja) | 2010-09-16 | 2015-05-27 | 株式会社村田製作所 | 電子部品 |
CN113993047A (zh) * | 2021-08-20 | 2022-01-28 | 天津大学 | 压电mems麦克风 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1482899A (fr) * | 1966-03-17 | 1967-06-02 | Csf | Lignes acoustiques dispersives |
US3665225A (en) * | 1970-08-28 | 1972-05-23 | Iit Res Inst | Hybrid surface-wave transducer |
US3689784A (en) * | 1970-09-10 | 1972-09-05 | Westinghouse Electric Corp | Broadband, high frequency, thin film piezoelectric transducers |
US3760299A (en) * | 1971-08-09 | 1973-09-18 | Hazeltine Corp | Acoustic surface wave-apparatus having dielectric material separating transducer from acoustic medium |
US3786373A (en) * | 1971-10-01 | 1974-01-15 | Raytheon Co | Temperature compensated acoustic surface wave device |
US3965444A (en) * | 1975-01-03 | 1976-06-22 | Raytheon Company | Temperature compensated surface acoustic wave devices |
-
1976
- 1976-02-26 DE DE2607837A patent/DE2607837C2/de not_active Expired
- 1976-03-01 GB GB8122/76A patent/GB1538242A/en not_active Expired
- 1976-03-04 IT IT7620880A patent/IT1056887B/it active
- 1976-03-04 US US05/663,764 patent/US4038615A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2607837C2 (de) | 1984-09-13 |
GB1538242A (en) | 1979-01-17 |
US4038615A (en) | 1977-07-26 |
DE2607837A1 (de) | 1976-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950327 |