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US3264585A - Dual electrostrictive drivers bonded to and driving opposite sides of mechanical resonator - Google Patents

Dual electrostrictive drivers bonded to and driving opposite sides of mechanical resonator Download PDF

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Publication number
US3264585A
US3264585A US200255A US20025562A US3264585A US 3264585 A US3264585 A US 3264585A US 200255 A US200255 A US 200255A US 20025562 A US20025562 A US 20025562A US 3264585 A US3264585 A US 3264585A
Authority
US
United States
Prior art keywords
electrostrictive
resonator
strip
opposite sides
drivers
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 - Lifetime
Application number
US200255A
Other languages
English (en)
Inventor
Poschenrieder Werner
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 and Halske AG
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
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3264585A publication Critical patent/US3264585A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H03H9/48—Coupling means therefor
    • H03H9/50—Mechanical coupling means

Definitions

  • the invention disclosed herein is concerned with an electrostrictive coupling arrangement for a resonator performing oscillations according to the longitudinal mode, such resonator being made preponderantly of material which is inactive in electrostrictive sense, especially of a metal, preferably steel, the remaining resonator parts being made of electrostrictive material, especially ceramic material which is active in electrostrictive sense and provided with energizing or triggering electrodes.
  • the object of the present invention is to improve the prior structure by forming the resonator as a fiat strip made of material which is inactive in electrostrictive sense, such strip being inthe region of the zone which is neutral for longitudinal oscillations, provided on both sides thereof with flat layers of electrostrictive material covering preferably only part of the resonator length, and disposing upon each side of the respective layers, which faces away from the resonator, an energizing or triggering electrode serving for feeding in identical phase the parts which are active in electrostrictive sense with respect to the resonator proper.
  • the drawing shows an electromechanical filter comprising three longitudinal oscillators 1, 2 and 3. These longitudinal oscillators which are of flat configuration, are interconnected by coupling bridges in the manner described in the previously noted copending application.
  • the coupling arrangement according to the present invention is provided respectively at the input and the output sides of the filter formed by the longitudinal oscillators. It comprises two thin plates 4, 5 of electrostrictive ceramic material which are soldered to the respective longitudinal oscillators 1 and 3, made preferably of steel, symmetrically with respect to the neutral zone thereof which is indicated by a dot-dash line.
  • the sides of the plates 4 and 5, made of electrostrictive material, which face away from the steel resonator, are metallized.
  • Each metallized side is provided with a lead-in wire such as indicated at 6 and 7, which extends therefrom preferably in the region of the neutral zone.
  • a further leading wire 8 extends from the respective longitudinal oscillators,
  • the steel body which is made of one piece can of course form more or fewer than three resonators.
  • a resonator for executing longitudinal oscillations comprising a generally fiat strip made of material which is inactive in electrostrictive sense and forms the resonator proper, and an electrostrictive coupling arrangement, comprising a pair of substantially identical flat layers made of electrostrictive material, each of which is disposed at a respective side of said strip in the region of the zone which is neutral for longitudinal oscillations, said layers coextensively covering opposite sides of said strip only for part of its length, each layer being provided with a triggering electrode upon the side thereof which faces away from said strip, and means for utilizing said triggering electrodes for feeding in identical phase the parts which are active in electrostrictive sense with respect to the resonator proper.
  • a resonator according to claim 1 wherein said strip is made of steel, said layers being formed of electrostrictive ceramic material, each layer being metallized on the side thereof which faces away from said strip and which form the respective triggering electrodes.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
US200255A 1961-06-20 1962-06-05 Dual electrostrictive drivers bonded to and driving opposite sides of mechanical resonator Expired - Lifetime US3264585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0074429 1961-06-20

Publications (1)

Publication Number Publication Date
US3264585A true US3264585A (en) 1966-08-02

Family

ID=7504644

Family Applications (1)

Application Number Title Priority Date Filing Date
US200255A Expired - Lifetime US3264585A (en) 1961-06-20 1962-06-05 Dual electrostrictive drivers bonded to and driving opposite sides of mechanical resonator

Country Status (5)

Country Link
US (1) US3264585A (sv)
BE (1) BE619130R (sv)
GB (1) GB948889A (sv)
NL (2) NL147298B (sv)
SE (1) SE309637B (sv)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354413A (en) * 1961-11-13 1967-11-21 Kokusai Electric Co Ltd Electromechanical filter for low frequencies
US3437849A (en) * 1966-11-21 1969-04-08 Motorola Inc Temperature compensation of electrical devices
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
US3488530A (en) * 1968-04-22 1970-01-06 North American Rockwell Piezoelectric microresonator
US3573672A (en) * 1968-10-30 1971-04-06 Bell Telephone Labor Inc Crystal filter
US3638145A (en) * 1969-12-15 1972-01-25 Bell Telephone Labor Inc Electromechanical wave filter
US4137511A (en) * 1977-09-13 1979-01-30 Bell Telephone Laboratories, Incorporated Electromechanical filter and resonator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187458A (en) * 1989-09-21 1993-02-16 Nihon Musen Kabushiki Kaisha Composite longitudinal vibration mechanical filter having central frequency deviation elimination means and method of manufacturing same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695357A (en) * 1951-04-19 1954-11-23 Rca Corp Frequency conversion apparatus
US2814785A (en) * 1955-07-29 1957-11-26 Rca Corp Electromechanical filter
US3015789A (en) * 1956-04-23 1962-01-02 Toyotsushinki Kabushiki Kaisha Mechanical filter
US3064213A (en) * 1959-08-14 1962-11-13 Bell Telephone Labor Inc Electromechanical wave transmission systems
US3086183A (en) * 1958-05-30 1963-04-16 Siemens And Halske Ag Berlin A Electromechanical filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695357A (en) * 1951-04-19 1954-11-23 Rca Corp Frequency conversion apparatus
US2814785A (en) * 1955-07-29 1957-11-26 Rca Corp Electromechanical filter
US3015789A (en) * 1956-04-23 1962-01-02 Toyotsushinki Kabushiki Kaisha Mechanical filter
US3086183A (en) * 1958-05-30 1963-04-16 Siemens And Halske Ag Berlin A Electromechanical filter
US3064213A (en) * 1959-08-14 1962-11-13 Bell Telephone Labor Inc Electromechanical wave transmission systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354413A (en) * 1961-11-13 1967-11-21 Kokusai Electric Co Ltd Electromechanical filter for low frequencies
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
US3437849A (en) * 1966-11-21 1969-04-08 Motorola Inc Temperature compensation of electrical devices
US3488530A (en) * 1968-04-22 1970-01-06 North American Rockwell Piezoelectric microresonator
US3573672A (en) * 1968-10-30 1971-04-06 Bell Telephone Labor Inc Crystal filter
US3638145A (en) * 1969-12-15 1972-01-25 Bell Telephone Labor Inc Electromechanical wave filter
US4137511A (en) * 1977-09-13 1979-01-30 Bell Telephone Laboratories, Incorporated Electromechanical filter and resonator

Also Published As

Publication number Publication date
NL147298B (nl) 1975-09-15
GB948889A (en) 1964-02-05
SE309637B (sv) 1969-03-31
NL277292A (sv)
BE619130R (fr) 1962-12-19

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