FR2321802B1 - - Google Patents

Info

Publication number
FR2321802B1
FR2321802B1 FR7625074A FR7625074A FR2321802B1 FR 2321802 B1 FR2321802 B1 FR 2321802B1 FR 7625074 A FR7625074 A FR 7625074A FR 7625074 A FR7625074 A FR 7625074A FR 2321802 B1 FR2321802 B1 FR 2321802B1
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
FR7625074A
Other languages
French (fr)
Other versions
FR2321802A1 (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2321802A1 publication Critical patent/FR2321802A1/fr
Application granted granted Critical
Publication of FR2321802B1 publication Critical patent/FR2321802B1/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
    • H03H9/6489—Compensation of undesirable effects
    • 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
    • H03H9/02858—Means for compensation or elimination of undesirable effects of wave front distortion
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
FR7625074A 1975-08-18 1976-08-18 Filtre mettant a profit des ondes de surface acoustiques Granted FR2321802A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3423475A GB1512686A (en) 1975-08-18 1975-08-18 Acoustic surface wave devices

Publications (2)

Publication Number Publication Date
FR2321802A1 FR2321802A1 (fr) 1977-03-18
FR2321802B1 true FR2321802B1 (de) 1982-03-12

Family

ID=10363100

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625074A Granted FR2321802A1 (fr) 1975-08-18 1976-08-18 Filtre mettant a profit des ondes de surface acoustiques

Country Status (5)

Country Link
JP (1) JPS5224444A (de)
CA (1) CA1089083A (de)
DE (1) DE2635192C2 (de)
FR (1) FR2321802A1 (de)
GB (1) GB1512686A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1585087A (en) * 1976-07-29 1981-02-25 Plessey Co Ltd Surface acoustic wave filters
NL7810674A (nl) * 1977-12-21 1979-06-25 Tektronix Inc Akoestische oppervlakgolfinrichting.
US4205285A (en) * 1978-11-03 1980-05-27 Gte Laboratories Incorporated Acoustic surface wave device
JPS5654114A (en) * 1979-10-11 1981-05-14 Nec Corp Reed screen shape converter of elastic surface wave
CN114611533B (zh) * 2022-01-28 2022-12-06 金陵科技学院 叉指单侧倾斜加权型声表面波式Morlet小波处理器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1360235A (en) * 1971-04-17 1974-07-17 Marconi Co Ltd Acoustic surface wave devices
GB1430725A (en) * 1974-08-02 1976-04-07 Mullard Ltd Acoustic surface wave devices
GB1499330A (en) * 1974-09-26 1978-02-01 Plessey Co Ltd Acoustic surface wave filters

Also Published As

Publication number Publication date
JPS5224444A (en) 1977-02-23
GB1512686A (en) 1978-06-01
DE2635192A1 (de) 1977-03-03
CA1089083A (en) 1980-11-04
DE2635192C2 (de) 1985-08-08
JPS5753003B2 (de) 1982-11-10
FR2321802A1 (fr) 1977-03-18

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Legal Events

Date Code Title Description
ST Notification of lapse