FR2319245A1 - Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur - Google Patents

Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur

Info

Publication number
FR2319245A1
FR2319245A1 FR7523139A FR7523139A FR2319245A1 FR 2319245 A1 FR2319245 A1 FR 2319245A1 FR 7523139 A FR7523139 A FR 7523139A FR 7523139 A FR7523139 A FR 7523139A FR 2319245 A1 FR2319245 A1 FR 2319245A1
Authority
FR
France
Prior art keywords
transducer
perfected
filter
transfer function
surface wave
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
FR7523139A
Other languages
English (en)
Other versions
FR2319245B1 (fr
Inventor
Jean Michel Autran
Bernard Epsztein
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 FR7523139A priority Critical patent/FR2319245A1/fr
Priority to US05/707,137 priority patent/US4068141A/en
Priority to DE19762632724 priority patent/DE2632724A1/de
Priority to GB30478/76A priority patent/GB1553375A/en
Priority to JP51088060A priority patent/JPS5215246A/ja
Publication of FR2319245A1 publication Critical patent/FR2319245A1/fr
Application granted granted Critical
Publication of FR2319245B1 publication Critical patent/FR2319245B1/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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6426—Combinations of the characteristics of different 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
    • H03H9/1455—Transducers of particular shape or position constituted of N parallel or series 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
FR7523139A 1975-07-24 1975-07-24 Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur Granted FR2319245A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7523139A FR2319245A1 (fr) 1975-07-24 1975-07-24 Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur
US05/707,137 US4068141A (en) 1975-07-24 1976-07-20 Transducer for surface wave filters with an asymmetrical transfer function
DE19762632724 DE2632724A1 (de) 1975-07-24 1976-07-21 Wandler fuer mit oberflaechenwellen arbeitende filter mit asymmetrischer uebertragungsfunktion
GB30478/76A GB1553375A (en) 1975-07-24 1976-07-21 Transducer for surface wave filters with an asymmetrical transfer function
JP51088060A JPS5215246A (en) 1975-07-24 1976-07-23 Surface acoustic wave filter converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7523139A FR2319245A1 (fr) 1975-07-24 1975-07-24 Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur

Publications (2)

Publication Number Publication Date
FR2319245A1 true FR2319245A1 (fr) 1977-02-18
FR2319245B1 FR2319245B1 (fr) 1979-03-30

Family

ID=9158315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523139A Granted FR2319245A1 (fr) 1975-07-24 1975-07-24 Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur

Country Status (5)

Country Link
US (1) US4068141A (fr)
JP (1) JPS5215246A (fr)
DE (1) DE2632724A1 (fr)
FR (1) FR2319245A1 (fr)
GB (1) GB1553375A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014117A1 (fr) * 1979-01-26 1980-08-06 Thomson-Csf Transducteur d'ondes élastiques de surface et filtre comprenant un tel transducteur
FR2740908A1 (fr) * 1995-11-07 1997-05-09 Thomson Csf Transducteur a ondes acoustiques de surface attaque en differentiel

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU726648A1 (ru) * 1977-07-22 1980-04-05 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Устройство на поверхностных акустических волнах
SU726647A1 (ru) * 1977-07-22 1980-04-05 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Полосовой фильтр на поверхностных акустических волнах
JPS5566120A (en) * 1978-11-13 1980-05-19 Hitachi Ltd Elastic surface wave device
US4604595A (en) * 1982-06-16 1986-08-05 Murata Manufacturing Co., Ltd. Surface acoustic wave device having interdigitated comb electrodes weighted for odd/even response
JPS60249948A (ja) * 1984-05-24 1985-12-10 京セラ株式会社 歯科用加熱装置
KR900008524B1 (ko) * 1987-08-19 1990-11-24 삼성전자 주식회사 위성수신기의 지대지간섭 제거를 위한 탄성표면파 필터
JP2574828B2 (ja) * 1987-12-23 1997-01-22 株式会社日立製作所 弾性表面波装置
GB2239144A (en) * 1989-12-16 1991-06-19 Plessey Co Plc Surface acoustic wave transducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2146823A5 (fr) * 1971-07-22 1973-03-02 Philips Nv

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626309A (en) * 1970-01-12 1971-12-07 Zenith Radio Corp Signal transmission system employing electroacoustic filter
FR2167405B1 (fr) * 1972-01-14 1976-06-11 Thomson Csf
JPS5539933B2 (fr) * 1972-09-04 1980-10-15
GB1396856A (en) * 1973-08-03 1975-06-11 Mullard Ltd Acoustic surface-wave devices
US3991330A (en) * 1974-04-23 1976-11-09 Westinghouse Electric Corporation Acoustic surface wave device using single crystal of Tl3 VS4 or Tl3 NbS4

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2146823A5 (fr) * 1971-07-22 1973-03-02 Philips Nv

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014117A1 (fr) * 1979-01-26 1980-08-06 Thomson-Csf Transducteur d'ondes élastiques de surface et filtre comprenant un tel transducteur
FR2447644A1 (fr) * 1979-01-26 1980-08-22 Thomson Csf Transducteur d'ondes elastiques de surface et filtre comprenant un tel transducteur
FR2740908A1 (fr) * 1995-11-07 1997-05-09 Thomson Csf Transducteur a ondes acoustiques de surface attaque en differentiel
WO1997017756A1 (fr) * 1995-11-07 1997-05-15 Thomson-Csf Transducteur a ondes acoustiques de surface attaque en differentiel

Also Published As

Publication number Publication date
US4068141A (en) 1978-01-10
GB1553375A (en) 1979-09-26
JPS5215246A (en) 1977-02-04
FR2319245B1 (fr) 1979-03-30
DE2632724A1 (de) 1977-01-27

Similar Documents

Publication Publication Date Title
BE844001A (fr) Filtre pour ligne de transmission
FR2392545B1 (fr) Composant a ondes superficielles acoustiques notamment pour filtres acoustiques
FR2447645B1 (fr) Filtre comportant un composant a transfert de charge
FR2312280A1 (fr) Filtre a liquide
JPS54127072A (en) Filter device of fluid
FR2296305A1 (fr) Filtre a ondes acoustiques de surface
BE827295A (fr) Filtre d'ondes de surface
FR2281005A1 (fr) Filtre mettant a profits des ondes de surface acoustiques
FR2337465A1 (fr) Procede et dispositif pour determiner les valeurs initiales des coefficients d'un egaliseur transversal complexe
BE864022A (fr) Dispositif formant filtre pour puits
IT1094512B (it) Filtro per liquidi e sospensioni
FR2312881A1 (fr) Demodulateurs differentiels a dispositifs a ondes elastiques de surface
BE815701R (fr) Filtre de guide d'ondes
FR2325243A1 (fr) Dispositif mettant a profit des ondes de surfaces acoustiques
FR2319245A1 (fr) Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur
BE861353A (fr) Filtre pour des ondes electromagnetiques tres courtes
FR2313811A1 (fr) Filtre moyenne frequence de television fonctionnant sur le principe des ondes de surface
FR2332085A1 (fr) Filtre pour metal liquide
DE3066687D1 (en) Surface acoustic wave filter device
BE842537A (fr) Dispositif a ondes acoustiques de surface
JPS52153356A (en) Surface acoustic wave filter device
NO146016C (no) Fremgangsmaate og anordning for rengjoering av fluidumfilter
FR2277470A1 (fr) Dispositif de centrage d'un filtre transversal d'un annuleur d'echo
BE819969A (fr) Filtre mettant a profit des ondes de surface acoustiques
JPS51127567A (en) Method of collecting light matter floating on liquid surface and its device

Legal Events

Date Code Title Description
ST Notification of lapse