BE785945A - Filtre electrique utilisant le principe des ondes de surface - Google Patents

Filtre electrique utilisant le principe des ondes de surface

Info

Publication number
BE785945A
BE785945A BE785945DA BE785945A BE 785945 A BE785945 A BE 785945A BE 785945D A BE785945D A BE 785945DA BE 785945 A BE785945 A BE 785945A
Authority
BE
Belgium
Prior art keywords
principle
surface waves
electric filter
filter
electric
Prior art date
Application number
Other languages
English (en)
Original Assignee
Siemens Ag
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.)
Publication date
Priority claimed from DE19722209585 external-priority patent/DE2209585C3/de
Publication of BE785945A publication Critical patent/BE785945A/fr

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
    • H03H9/70—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/182—Extraction of features or characteristics of the image by coding the contour of the pattern
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02653—Grooves or arrays buried in the substrate
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/02771—Reflector banks
    • 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
    • H03H9/02905—Measures for separating propagation paths on substrate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
BE785945D 1971-07-06 Filtre electrique utilisant le principe des ondes de surface BE785945A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2133634A DE2133634C3 (de) 1971-07-06 1971-07-06 Elektrisches Filter nach dem Oberflächenwellenprinzip, Verfahren zu seinem Abgleich und Filterweiche
DE2158858A DE2158858C3 (de) 1971-07-06 1971-11-26 Elektromechanischer Wandler
DE19722209585 DE2209585C3 (de) 1972-02-29 Elektrisches Filter nach dem Oberflächenwellenprinzip

Publications (1)

Publication Number Publication Date
BE785945A true BE785945A (fr) 1973-01-08

Family

ID=27183546

Family Applications (1)

Application Number Title Priority Date Filing Date
BE785945D BE785945A (fr) 1971-07-06 Filtre electrique utilisant le principe des ondes de surface

Country Status (14)

Country Link
US (1) US3781717A (fr)
JP (1) JPS5326798B2 (fr)
AR (1) AR193276A1 (fr)
AT (1) AT326730B (fr)
BE (1) BE785945A (fr)
CA (1) CA987009A (fr)
CH (1) CH549900A (fr)
DE (2) DE2133634C3 (fr)
FI (1) FI57033C (fr)
FR (1) FR2145175A5 (fr)
GB (1) GB1396997A (fr)
IT (1) IT962433B (fr)
NL (1) NL7209290A (fr)
SE (2) SE381389B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2363701A1 (de) * 1973-12-21 1975-06-26 Licentia Gmbh Akustisches oberflaechenwellenfilter
GB1445782A (en) * 1974-03-05 1976-08-11 Standard Telephones Cables Ltd Surface acoustic wave filter device
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices
US4166258A (en) * 1974-08-29 1979-08-28 International Business Machines Corporation Thin-film integrated circuit with tank circuit characteristics and applications to thin-film filters and oscillators
FR2290786A1 (fr) * 1974-11-08 1976-06-04 Thomson Csf Dispositif a reflexion selective d'ondes elastiques de surface
GB1529941A (en) * 1975-01-15 1978-10-25 Mullard Ltd Electrical filters including coupled resonators
US3961293A (en) * 1975-02-03 1976-06-01 Texas Instruments Incorporated Multi-resonant surface wave resonator
US3970970A (en) * 1975-06-30 1976-07-20 Motorola, Inc. Multiple acoustically coupled surface acoustic wave resonators
US4055820A (en) * 1975-12-05 1977-10-25 Sperry Rand Corporation Reflective dot array for acoustic wave processing
US4048594A (en) * 1976-01-02 1977-09-13 Hughes Aircraft Company Surface acoustic wave filter
US4028648A (en) * 1976-03-08 1977-06-07 Texas Instruments Incorporated Tunable surface wave device resonator
US4130813A (en) * 1977-05-23 1978-12-19 Raytheon Company Surface wave device having enhanced reflectivity gratings
US4184131A (en) * 1978-07-20 1980-01-15 Massachusetts Institute Of Technology Electrical filter of cascaded surface acoustic wave resonators
JPS63159799A (ja) * 1986-12-24 1988-07-02 株式会社神戸製鋼所 放射性物質の輸送兼貯蔵用容器
AU771327B2 (en) * 1999-03-01 2004-03-18 Harris Corporation Low profile acoustic sensor array and sensors with pleated transmission lines and related methods
US7077853B2 (en) * 2000-10-20 2006-07-18 Ethicon Endo-Surgery, Inc. Method for calculating transducer capacitance to determine transducer temperature
DE10347108B4 (de) * 2003-10-10 2017-09-21 Snaptrack, Inc. Elektroakustisches Bauelement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
US3662293A (en) * 1971-03-17 1972-05-09 Zenith Radio Corp Acoustic-wave transmitting device

Also Published As

Publication number Publication date
FI57033C (fi) 1980-05-12
DE2158858C3 (de) 1974-06-12
SE408112B (sv) 1979-05-14
AR193276A1 (es) 1973-04-11
FR2145175A5 (fr) 1973-02-16
IT962433B (it) 1973-12-20
DE2209585A1 (de) 1973-09-13
AT326730B (de) 1975-12-29
JPS5326798B2 (fr) 1978-08-04
DE2133634B2 (de) 1974-08-08
DE2133634A1 (de) 1973-01-25
DE2133634C3 (de) 1975-03-27
DE2158858B2 (de) 1973-11-15
AU4281172A (en) 1973-11-29
FI57033B (fi) 1980-01-31
SE381389B (sv) 1975-12-01
CH549900A (de) 1974-05-31
JPS4861091A (fr) 1973-08-27
SE7506320L (sv) 1975-06-03
GB1396997A (en) 1975-06-11
US3781717A (en) 1973-12-25
DE2158858A1 (de) 1973-05-30
CA987009A (en) 1976-04-06
ATA463472A (de) 1975-03-15
NL7209290A (fr) 1973-01-09
DE2209585B2 (de) 1975-06-19

Similar Documents

Publication Publication Date Title
BE785945A (fr) Filtre electrique utilisant le principe des ondes de surface
FR2292331A1 (fr) Filtre de wien
IT962196B (it) Complesso di filtro eliminabile
IT946494B (it) Connettitore per filtri
IT954371B (it) Dispositivo per l analisi in frequenza di segnali
BE827295A (fr) Filtre d'ondes de surface
BE788559A (fr) Ensemble de filtre
IT1067509B (it) Filtro di onde elastiche di superficie
IT964181B (it) Assieme di filtro
IT961468B (it) Filtro ad onda di superficie
FR2313811A1 (fr) Filtre moyenne frequence de television fonctionnant sur le principe des ondes de surface
BR7202745D0 (pt) Filtro de n-trajetos
AT320088B (de) Elektrostatisches Filter
SE380412B (sv) Akustisk ytvagsanordning
BE801525A (fr) Filtre piezoelectrique
AT320535B (de) Brunnenfilter
BE824262A (fr) Filtre coupe-bande hyperfrequence
IT1039582B (it) Filtri austici ad onda superfi ciale
IT956899B (it) Filtro piezoelettrico che lavora secondo il principio delle onde superficiali
CH518630A (fr) Filtre électrique
BE815956A (fr) Filtre utilisant des ondes de surface acoustiques
BE785364A (fr) Element fonctionnel travaillant suivant le principe des ondes superficielles
BE802498A (fr) Filtre ou ligne a retard travaillant suivant le principe des ondes de surface
AT308202B (de) Piezoelektrisches Filter nach dem Oberflächenwellenprinzip
FR1493919A (fr) Filtre de fréquence