GB1319946A - Piezoelectric filters - Google Patents

Piezoelectric filters

Info

Publication number
GB1319946A
GB1319946A GB1178171A GB1178171A GB1319946A GB 1319946 A GB1319946 A GB 1319946A GB 1178171 A GB1178171 A GB 1178171A GB 1178171 A GB1178171 A GB 1178171A GB 1319946 A GB1319946 A GB 1319946A
Authority
GB
United Kingdom
Prior art keywords
electrodes
input
attenuation poles
output
april
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.)
Expired
Application number
GB1178171A
Other languages
English (en)
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.)
Siemens Corp
Original Assignee
Siemens Corp
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
Priority claimed from DE19702021124 external-priority patent/DE2021124C3/de
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of GB1319946A publication Critical patent/GB1319946A/en
Expired 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 elements; 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 elements; 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 elements; 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
    • 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
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/1455—Transducers of particular shape or position constituted of N parallel or series transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
GB1178171A 1970-04-29 1971-04-28 Piezoelectric filters Expired GB1319946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702021124 DE2021124C3 (de) 1970-04-29 Piezoelektrisches Filter nach dem Oberfl ächen wellenprinzip

Publications (1)

Publication Number Publication Date
GB1319946A true GB1319946A (en) 1973-06-13

Family

ID=5769849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1178171A Expired GB1319946A (en) 1970-04-29 1971-04-28 Piezoelectric filters

Country Status (4)

Country Link
AT (3) AT308202B (enExample)
FR (1) FR2090687A5 (enExample)
GB (1) GB1319946A (enExample)
NL (1) NL7105921A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016169665A1 (de) * 2015-04-22 2016-10-27 Epcos Ag Elektroakustisches bauelement mit verbesserter akustik

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454223B1 (fr) * 1979-04-10 1986-11-28 Telediffusion Fse Dispositif a ondes elastiques de surface pour circuit de brouillage ou de debrouillage d'emissions de television
US4609891A (en) * 1985-10-16 1986-09-02 Sperry Corporation Staggered SAW resonator for differential detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016169665A1 (de) * 2015-04-22 2016-10-27 Epcos Ag Elektroakustisches bauelement mit verbesserter akustik

Also Published As

Publication number Publication date
FR2090687A5 (enExample) 1972-01-14
DE2021124B2 (de) 1975-07-31
NL7105921A (enExample) 1971-11-02
AT308202B (de) 1973-06-25
AT321367B (de) 1975-03-25
DE2021124A1 (de) 1971-11-11
AT320744B (de) 1975-02-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees