GB2167257B - Surface acoustic wave device - Google Patents

Surface acoustic wave device

Info

Publication number
GB2167257B
GB2167257B GB08525365A GB8525365A GB2167257B GB 2167257 B GB2167257 B GB 2167257B GB 08525365 A GB08525365 A GB 08525365A GB 8525365 A GB8525365 A GB 8525365A GB 2167257 B GB2167257 B GB 2167257B
Authority
GB
United Kingdom
Prior art keywords
acoustic wave
surface acoustic
wave device
wave
acoustic
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
Application number
GB08525365A
Other versions
GB2167257A (en
GB8525365D0 (en
Inventor
Syuichi Mitsutsuka
Shoichi Minagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP59215952A external-priority patent/JPS6194411A/en
Priority claimed from JP21595384A external-priority patent/JPS6194407A/en
Application filed by Clarion Co Ltd filed Critical Clarion Co Ltd
Publication of GB8525365D0 publication Critical patent/GB8525365D0/en
Publication of GB2167257A publication Critical patent/GB2167257A/en
Application granted granted Critical
Publication of GB2167257B publication Critical patent/GB2167257B/en
Expired legal-status Critical Current

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
    • H03H9/6403—Programmable filters
    • 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
    • H03H9/14564—Shifted fingers 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
    • H03H9/02—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
    • H03H9/14564—Shifted fingers transducers
    • H03H9/14567—Stepped-fan shaped 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
    • H03H9/30—Time-delay networks
    • H03H9/42—Time-delay networks using surface acoustic waves
    • H03H9/423—Time-delay networks using surface acoustic waves with adjustable delay time
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves
    • 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
    • H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
    • H03H9/02629—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the edges
    • 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
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
GB08525365A 1984-10-15 1985-10-15 Surface acoustic wave device Expired GB2167257B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59215952A JPS6194411A (en) 1984-10-15 1984-10-15 Variable band surface acoustic wave filter
JP21595384A JPS6194407A (en) 1984-10-15 1984-10-15 Surface acoustic wave variable delay line

Publications (3)

Publication Number Publication Date
GB8525365D0 GB8525365D0 (en) 1985-11-20
GB2167257A GB2167257A (en) 1986-05-21
GB2167257B true GB2167257B (en) 1988-06-29

Family

ID=26521134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08525365A Expired GB2167257B (en) 1984-10-15 1985-10-15 Surface acoustic wave device

Country Status (4)

Country Link
DE (1) DE3536704C2 (en)
FR (1) FR2571907B1 (en)
GB (1) GB2167257B (en)
NL (1) NL8502807A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE89689T1 (en) * 1987-02-17 1993-06-15 Electronic Decisions Inc COMPLEMENTARY ACOUSTIC CARGO TRANSPORT ARRANGEMENT AND METHOD.
DE3731196A1 (en) * 1987-09-17 1989-03-30 Messerschmitt Boelkow Blohm FREQUENCY SELECTIVE SOUND CONVERTER
JP2606708B2 (en) * 1987-11-17 1997-05-07 日本無線株式会社 Surface acoustic wave filter
GB2212685B (en) * 1987-11-17 1992-10-14 Japan Radio Co Ltd Surface elastic wave device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609883A1 (en) * 1975-03-11 1976-09-30 Murata Manufacturing Co Acoustic surface wave filter - has piezoelectric substrate with input and output transducer systems
JPS54844A (en) * 1977-06-03 1979-01-06 Matsushita Electric Ind Co Ltd Elastic surface wave filter
FR2403689A1 (en) * 1977-09-20 1979-04-13 Thomson Csf SURFACE ELASTIC WAVE DEVICE FOR TREATMENT OF HIGH FREQUENCY SIGNALS
GB2068672B (en) * 1979-12-24 1984-11-07 Clarion Co Ltd Surface-acoustic-wave parametric device
JPS62105514A (en) * 1985-11-01 1987-05-16 Kokusai Denshin Denwa Co Ltd <Kdd> Surface acoustic wave filter bank

Also Published As

Publication number Publication date
FR2571907A1 (en) 1986-04-18
GB2167257A (en) 1986-05-21
DE3536704A1 (en) 1986-04-17
DE3536704C2 (en) 1997-01-30
GB8525365D0 (en) 1985-11-20
FR2571907B1 (en) 1991-02-08
NL8502807A (en) 1986-05-01

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19930318

PCNP Patent ceased through non-payment of renewal fee

Effective date: 19961015