NL7005390A - - Google Patents

Info

Publication number
NL7005390A
NL7005390A NL7005390A NL7005390A NL7005390A NL 7005390 A NL7005390 A NL 7005390A NL 7005390 A NL7005390 A NL 7005390A NL 7005390 A NL7005390 A NL 7005390A NL 7005390 A NL7005390 A NL 7005390A
Authority
NL
Netherlands
Application number
NL7005390A
Other versions
NL172810B (nl
NL172810C (nl
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 filed Critical
Publication of NL7005390A publication Critical patent/NL7005390A/xx
Publication of NL172810B publication Critical patent/NL172810B/xx
Application granted granted Critical
Publication of NL172810C publication Critical patent/NL172810C/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; 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 elements; 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)
NLAANVRAGE7005390,A 1969-04-16 1970-04-15 Filter met akoestische oppervlakte-golven. NL172810C (nl)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
NL7005390A true NL7005390A (enrdf_load_stackoverflow) 1970-10-20
NL172810B NL172810B (nl) 1983-05-16
NL172810C NL172810C (nl) 1983-10-17

Family

ID=9032486

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7005390,A NL172810C (nl) 1969-04-16 1970-04-15 Filter met akoestische oppervlakte-golven.

Country Status (6)

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

Families Citing this family (22)

* 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
FR2167405B1 (enrdf_load_stackoverflow) * 1972-01-14 1976-06-11 Thomson Csf
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 (enrdf_load_stackoverflow) * 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 (de) * 1975-03-12 1976-09-23 Murata Manufacturing Co Wellenfilter mit akustischer oberflaechenleitung
JPS51158736U (enrdf_load_stackoverflow) * 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 (de) * 1976-04-26 1980-03-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Wandlerelektroden für Filter oder Verzögerungsleitungen nach dem Oberflächenwellenprinzip
JPS5831743B2 (ja) * 1977-09-17 1983-07-08 株式会社村田製作所 酸化亜鉛の圧電結晶膜
US4385377A (en) * 1978-01-16 1983-05-24 Texas Instruments Incorporated Pulse position time division surface wave device transmitter
JPS5843609A (ja) * 1981-09-09 1983-03-14 Toshiba Corp 弾性表面波装置
JPS5844808A (ja) * 1981-09-11 1983-03-15 Toshiba Corp 弾性表面波装置
JPS5994980A (ja) * 1982-11-24 1984-05-31 Hitachi Ltd デイスクランブル装置
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 (fr) * 1987-03-19 1988-09-23 Thomson Csf Procede de correction d'un dispositif a ondes de surface, notamment pour un filtre dispersif
DE4227340C2 (de) * 1991-08-22 1995-09-21 Hitachi Ltd Oberflächenwellen-Bauelement
JP3824498B2 (ja) * 2000-09-28 2006-09-20 富士通株式会社 弾性表面波フィルタ
JP5892878B2 (ja) * 2012-06-28 2016-03-23 太陽誘電株式会社 弾性波デバイスおよびその製造方法

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 (enrdf_load_stackoverflow) * 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

Also Published As

Publication number Publication date
US3663899A (en) 1972-05-16
DE2016109A1 (de) 1970-10-22
GB1295909A (enrdf_load_stackoverflow) 1972-11-08
NL172810B (nl) 1983-05-16
SE364611B (enrdf_load_stackoverflow) 1974-02-25
DE2016109B2 (de) 1978-03-02
DE2016109C3 (de) 1978-11-30
FR2040881A5 (enrdf_load_stackoverflow) 1971-01-22
NL172810C (nl) 1983-10-17

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Legal Events

Date Code Title Description
V4 Discontinued because of reaching the maximum lifetime of a patent