GB2168869B - A surface acoustic wave ladder transducer - Google Patents

A surface acoustic wave ladder transducer

Info

Publication number
GB2168869B
GB2168869B GB08432074A GB8432074A GB2168869B GB 2168869 B GB2168869 B GB 2168869B GB 08432074 A GB08432074 A GB 08432074A GB 8432074 A GB8432074 A GB 8432074A GB 2168869 B GB2168869 B GB 2168869B
Authority
GB
United Kingdom
Prior art keywords
acoustic wave
surface acoustic
wave ladder
transducer
ladder transducer
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
GB08432074A
Other versions
GB2168869A (en
Inventor
Adrian Nigel Farr
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB08432074A priority Critical patent/GB2168869B/en
Publication of GB2168869A publication Critical patent/GB2168869A/en
Application granted granted Critical
Publication of GB2168869B publication Critical patent/GB2168869B/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
    • H03H9/02—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
    • 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
    • H03H9/02236—Details of surface skimming bulk wave devices
    • 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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6406—Filters characterised by a particular frequency characteristic
GB08432074A 1984-12-19 1984-12-19 A surface acoustic wave ladder transducer Expired GB2168869B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08432074A GB2168869B (en) 1984-12-19 1984-12-19 A surface acoustic wave ladder transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08432074A GB2168869B (en) 1984-12-19 1984-12-19 A surface acoustic wave ladder transducer

Publications (2)

Publication Number Publication Date
GB2168869A GB2168869A (en) 1986-06-25
GB2168869B true GB2168869B (en) 1988-09-14

Family

ID=10571441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08432074A Expired GB2168869B (en) 1984-12-19 1984-12-19 A surface acoustic wave ladder transducer

Country Status (1)

Country Link
GB (1) GB2168869B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255263B1 (en) * 1986-07-29 1995-01-04 R F Monolithics, Inc. Transducer
EP0259628B1 (en) * 1986-08-29 1992-03-04 Siemens Aktiengesellschaft Transducer for an acoustic wave filter device
US5023605A (en) * 1988-11-25 1991-06-11 Gte Laboratories, Inc. Patterned transducer apparatus for correcting spurious signals in said devices
GB2259818B (en) * 1991-09-17 1995-08-16 Racal Mesl Ltd Surface acoustic wave (saw) ladder transducer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3575056D1 (en) * 1984-09-03 1990-02-01 Epprecht Georg Prof Dr CONVERTER FOR SAW ARRANGEMENT.

Also Published As

Publication number Publication date
GB2168869A (en) 1986-06-25

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20041218