FR2040881A5 - - Google Patents

Info

Publication number
FR2040881A5
FR2040881A5 FR6911765A FR6911765A FR2040881A5 FR 2040881 A5 FR2040881 A5 FR 2040881A5 FR 6911765 A FR6911765 A FR 6911765A FR 6911765 A FR6911765 A FR 6911765A FR 2040881 A5 FR2040881 A5 FR 2040881A5
Authority
FR
France
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
FR6911765A
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR6911765A priority Critical patent/FR2040881A5/fr
Priority to GB1295909D priority patent/GB1295909A/en
Priority to US25158A priority patent/US3663899A/en
Priority to DE2016109A priority patent/DE2016109C3/en
Priority to NLAANVRAGE7005390,A priority patent/NL172810C/en
Priority to SE05125/70A priority patent/SE364611B/xx
Application granted granted Critical
Publication of FR2040881A5 publication Critical patent/FR2040881A5/fr
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
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation
    • 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
    • H03H9/14517—Means for weighting
    • H03H9/14526—Finger withdrawal
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR6911765A 1969-04-16 1969-04-16 Expired FR2040881A5 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR6911765A FR2040881A5 (en) 1969-04-16 1969-04-16
GB1295909D GB1295909A (en) 1969-04-16 1970-03-31
US25158A US3663899A (en) 1969-04-16 1970-04-02 Surface-wave electro-acoustic filter
DE2016109A DE2016109C3 (en) 1969-04-16 1970-04-03 Filter based on the surface wave principle
NLAANVRAGE7005390,A NL172810C (en) 1969-04-16 1970-04-15 FILTER WITH ACOUSTIC SURFACE WAVES.
SE05125/70A SE364611B (en) 1969-04-16 1970-04-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6911765A FR2040881A5 (en) 1969-04-16 1969-04-16

Publications (1)

Publication Number Publication Date
FR2040881A5 true FR2040881A5 (en) 1971-01-22

Family

ID=9032486

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6911765A Expired FR2040881A5 (en) 1969-04-16 1969-04-16

Country Status (6)

Country Link
US (1) US3663899A (en)
DE (1) DE2016109C3 (en)
FR (1) FR2040881A5 (en)
GB (1) GB1295909A (en)
NL (1) NL172810C (en)
SE (1) SE364611B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167405A1 (en) * 1972-01-14 1973-08-24 Thomson Csf

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755761A (en) * 1971-12-30 1973-08-28 Texas Instruments Inc Surface wave transversal frequency filter
US3845420A (en) * 1973-03-02 1974-10-29 Raytheon Co Surface acoustic wave phase control device
US3855556A (en) * 1973-04-02 1974-12-17 Texas Instruments Inc Selectable frequency bandpass filter
US3979702A (en) * 1974-04-08 1976-09-07 The Magnavox Company Apparatus and method for oversampled transducers in acoustic surface wave devices
JPS519648A (en) * 1974-07-15 1976-01-26 Nippon Telegraph & Telephone
GB1499330A (en) * 1974-09-26 1978-02-01 Plessey Co Ltd Acoustic surface wave filters
DE2610183A1 (en) * 1975-03-12 1976-09-23 Murata Manufacturing Co WAVE FILTER WITH ACOUSTIC SURFACE CONDUCTION
JPS51158736U (en) * 1975-06-11 1976-12-17
US4005378A (en) * 1975-11-25 1977-01-25 The United States Of America As Represented By The Secretary Of The Air Force Surface acoustic wave filter
DE2618210C3 (en) * 1976-04-26 1980-03-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Converter electrodes for filters or delay lines based on the surface wave principle
JPS5831743B2 (en) * 1977-09-17 1983-07-08 株式会社村田製作所 Zinc oxide piezoelectric crystal film
US4385377A (en) * 1978-01-16 1983-05-24 Texas Instruments Incorporated Pulse position time division surface wave device transmitter
JPS5843609A (en) * 1981-09-09 1983-03-14 Toshiba Corp Surface acoustic wave device
JPS5844808A (en) * 1981-09-11 1983-03-15 Toshiba Corp Surface acoustic wave device
JPS5994980A (en) * 1982-11-24 1984-05-31 Hitachi Ltd Descrambling device
US4485364A (en) * 1983-05-17 1984-11-27 Zenith Electronics Corporation Reflection-compensated surface acoustic wave transducer
CA1273701A (en) * 1986-03-12 1990-09-04 Mark S. Suthers Saw device with apodized idt
FR2612711A1 (en) * 1987-03-19 1988-09-23 Thomson Csf METHOD FOR CORRECTING A SURFACE WAVE DEVICE, IN PARTICULAR FOR A DISPERSIVE FILTER
DE4227340C2 (en) * 1991-08-22 1995-09-21 Hitachi Ltd Surface wave device
JP3824498B2 (en) * 2000-09-28 2006-09-20 富士通株式会社 Surface acoustic wave filter
JP5892878B2 (en) * 2012-06-28 2016-03-23 太陽誘電株式会社 Elastic wave device and manufacturing method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759044A (en) * 1950-11-24 1956-08-14 Bell Telephone Labor Inc Beam aperature correction in horizontal and vertical direction
US2922965A (en) * 1956-08-09 1960-01-26 Bell Telephone Labor Inc Aperture equalizer and phase correction for television
NL253866A (en) * 1959-07-17
US3310761A (en) * 1963-06-18 1967-03-21 Joseph B Brauer Tapped microwave acoustic delay line
US3376572A (en) * 1966-09-15 1968-04-02 Rca Corp Electroacoustic wave shaping device
US3446975A (en) * 1966-11-07 1969-05-27 Zenith Radio Corp Acousto-electric filter utilizing surface wave propagation in which the center frequency is determined by a conductivity pattern resulting from an optical image

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EXBK/65 *
EXBK/67 *
EXBK/69 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167405A1 (en) * 1972-01-14 1973-08-24 Thomson Csf

Also Published As

Publication number Publication date
SE364611B (en) 1974-02-25
DE2016109C3 (en) 1978-11-30
DE2016109B2 (en) 1978-03-02
GB1295909A (en) 1972-11-08
US3663899A (en) 1972-05-16
DE2016109A1 (en) 1970-10-22
NL7005390A (en) 1970-10-20
NL172810B (en) 1983-05-16
NL172810C (en) 1983-10-17

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