FR2310029A1 - Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples - Google Patents

Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples

Info

Publication number
FR2310029A1
FR2310029A1 FR7513619A FR7513619A FR2310029A1 FR 2310029 A1 FR2310029 A1 FR 2310029A1 FR 7513619 A FR7513619 A FR 7513619A FR 7513619 A FR7513619 A FR 7513619A FR 2310029 A1 FR2310029 A1 FR 2310029A1
Authority
FR
France
Prior art keywords
elimination
wave device
elastic wave
device allowing
surface elastic
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.)
Granted
Application number
FR7513619A
Other languages
English (en)
Other versions
FR2310029B1 (fr
Inventor
Gerard Coussot
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 FR7513619A priority Critical patent/FR2310029A1/fr
Priority to YU1045/76A priority patent/YU37249B/xx
Priority to US05/680,678 priority patent/US4025880A/en
Priority to GB17114/76A priority patent/GB1551057A/en
Priority to BE166514A priority patent/BE841218A/fr
Priority to CA251,393A priority patent/CA1070784A/fr
Priority to SU762353461A priority patent/SU652920A3/ru
Priority to PL1976189206A priority patent/PL110354B1/pl
Priority to JP51049824A priority patent/JPS51134547A/ja
Priority to DE19762619290 priority patent/DE2619290A1/de
Publication of FR2310029A1 publication Critical patent/FR2310029A1/fr
Application granted granted Critical
Publication of FR2310029B1 publication Critical patent/FR2310029B1/fr
Granted 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
    • H03H9/02535—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
    • 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
    • H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
    • 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
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • H03H9/0285—Means for compensation or elimination of undesirable effects of reflections of triple transit echo

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
FR7513619A 1975-04-30 1975-04-30 Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples Granted FR2310029A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR7513619A FR2310029A1 (fr) 1975-04-30 1975-04-30 Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples
YU1045/76A YU37249B (en) 1975-04-30 1976-04-26 Electromechanical arrangement with surface elastic waves
GB17114/76A GB1551057A (en) 1975-04-30 1976-04-27 Elastic surface wave transmitting device for eliminating multiple transit echoes
US05/680,678 US4025880A (en) 1975-04-30 1976-04-27 Elastic surface wave transmitting device for eliminating multiple transit echoes
BE166514A BE841218A (fr) 1975-04-30 1976-04-28 Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples
CA251,393A CA1070784A (fr) 1975-04-30 1976-04-29 Dispositif d'emission d'onde de surface elastique pour eliminer les echos de transit multiples
SU762353461A SU652920A3 (ru) 1975-04-30 1976-04-29 Передающее устройство на упругих поверхностных волнах
PL1976189206A PL110354B1 (en) 1975-04-30 1976-04-30 System for transmitting elastic surface waves
JP51049824A JPS51134547A (en) 1975-04-30 1976-04-30 Device for transmitting surface acoustic wave
DE19762619290 DE2619290A1 (de) 1975-04-30 1976-04-30 Mit elastischen oberflaechenwellen arbeitende uebertragungsvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7513619A FR2310029A1 (fr) 1975-04-30 1975-04-30 Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples

Publications (2)

Publication Number Publication Date
FR2310029A1 true FR2310029A1 (fr) 1976-11-26
FR2310029B1 FR2310029B1 (fr) 1978-02-24

Family

ID=9154693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7513619A Granted FR2310029A1 (fr) 1975-04-30 1975-04-30 Dispositif a ondes elastiques de surface permettant l'elimination des echos a transits multiples

Country Status (10)

Country Link
US (1) US4025880A (fr)
JP (1) JPS51134547A (fr)
BE (1) BE841218A (fr)
CA (1) CA1070784A (fr)
DE (1) DE2619290A1 (fr)
FR (1) FR2310029A1 (fr)
GB (1) GB1551057A (fr)
PL (1) PL110354B1 (fr)
SU (1) SU652920A3 (fr)
YU (1) YU37249B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358051A1 (fr) * 1976-07-09 1978-02-03 Thomson Csf Oscillateur a ondes elastiques de surface
JPS55125713A (en) * 1979-03-22 1980-09-27 Toshiba Corp Surface elastic wave device
JPS58154917A (ja) * 1982-03-10 1983-09-14 Hitachi Ltd 弾性表面波バンドパスフイルタ
DE3425555C2 (de) * 1984-07-11 1994-11-17 Clarion Co Ltd SAW-Oberflächenwellenbauelement
DE3517254A1 (de) * 1985-05-13 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Mit akustischen wellen arbeitendes elektrisches filter
JPS6484909A (en) * 1987-09-25 1989-03-30 Nec Corp Surface acoustic wave device
DE4212517C2 (de) * 1992-04-14 1995-02-23 Siemens Ag Oberflächenwellenanordnung mit mindestens zwei in Richtung der Hauptwellenausbreitung benachbarten Oberflächenwellen-Strukturen
US10361676B2 (en) * 2017-09-29 2019-07-23 Qorvo Us, Inc. Baw filter structure with internal electrostatic shielding

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872410A (en) * 1972-12-04 1975-03-18 Gte Laboratories Inc Surface wave filter for tv if stage
US3845420A (en) * 1973-03-02 1974-10-29 Raytheon Co Surface acoustic wave phase control device
US3908137A (en) * 1973-12-26 1975-09-23 Magnavox Co Apparatus and method for triple transit signal cancellation in an acoustical surface wave device
US3868608A (en) * 1974-04-01 1975-02-25 Gte Sylvania Inc Surface wave filter
FR2278200A1 (fr) * 1974-07-12 1976-02-06 Thomson Csf Dispositif electromecanique a ongles elastiques de surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
CA1070784A (fr) 1980-01-29
BE841218A (fr) 1976-10-28
YU37249B (en) 1984-08-31
FR2310029B1 (fr) 1978-02-24
DE2619290A1 (de) 1976-11-11
JPS51134547A (en) 1976-11-22
GB1551057A (en) 1979-08-22
PL110354B1 (en) 1980-07-31
YU104576A (en) 1983-04-27
SU652920A3 (ru) 1979-03-15
US4025880A (en) 1977-05-24

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Legal Events

Date Code Title Description
ST Notification of lapse