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GB1034176A - Improvements in or relating to electromechanical filters - Google Patents

Improvements in or relating to electromechanical filters

Info

Publication number
GB1034176A
GB1034176A GB14516/63A GB1451663A GB1034176A GB 1034176 A GB1034176 A GB 1034176A GB 14516/63 A GB14516/63 A GB 14516/63A GB 1451663 A GB1451663 A GB 1451663A GB 1034176 A GB1034176 A GB 1034176A
Authority
GB
United Kingdom
Prior art keywords
plates
filter
electromechanical
april
width
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
GB14516/63A
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.)
Toko Radio Coil Kenkyusho KK
Original Assignee
Toko Radio Coil Kenkyusho KK
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 Toko Radio Coil Kenkyusho KK filed Critical Toko Radio Coil Kenkyusho KK
Publication of GB1034176A publication Critical patent/GB1034176A/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
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers
    • 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
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

1,034,176. Electromechanical filters. KABUSHIKI KAISHA TOKO RADIO COIL KENKYUSHO. April 11, 1963 [April 14, 1962], No. 14516/63. Heading H3U. In order to eliminate spurious responses in an electromechanical filter comprising resonant rectangular plates, the length a of these plates is selected to be more than twice, and preferably more than three times, their width b. The filter consists of two or more plates 1, 2 coupled together by one or more coupling elements 3, the whole filter being made from a single sheet of e.g. aluminium alloy. The end plates carry thin electroded transducers 4, 5 of electrostrictive ceramic material. The length d of the coupling elements is preferably made smaller than b and the width is selected from the range a/8 to a/12.
GB14516/63A 1962-04-14 1963-04-11 Improvements in or relating to electromechanical filters Expired GB1034176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1498062 1962-04-14

Publications (1)

Publication Number Publication Date
GB1034176A true GB1034176A (en) 1966-06-29

Family

ID=11876102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14516/63A Expired GB1034176A (en) 1962-04-14 1963-04-11 Improvements in or relating to electromechanical filters

Country Status (3)

Country Link
US (1) US3189852A (en)
DE (1) DE1616671B1 (en)
GB (1) GB1034176A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242445A (en) * 1964-03-31 1966-03-22 Toko Radio Coil Kenkyusho Kk Supporting device for mechanical filter
US4137511A (en) * 1977-09-13 1979-01-30 Bell Telephone Laboratories, Incorporated Electromechanical filter and resonator
US4233579A (en) * 1979-06-06 1980-11-11 Bell Telephone Laboratories, Incorporated Technique for suppressing spurious resonances in strip transmission line circuits
US4368402A (en) * 1980-07-02 1983-01-11 Fuji Electrochemical Co., Ltd. H-Type ceramic resonator
US4555682A (en) * 1983-03-02 1985-11-26 Fujitsu Limited Mechanical filter
DE4042436C2 (en) * 1989-09-21 1998-05-14 Japan Radio Co Ltd Mfg. longitudinally oscillating,, mechanical coupling filter
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
TWI290674B (en) * 2006-03-03 2007-12-01 Ind Tech Res Inst Composite mode transducer and cooling device with the composite mode transducer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276013A (en) * 1939-06-08 1942-03-10 Western Electric Co Apparatus for electrical transformation
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
DE1252330B (en) * 1958-09-17
US3064213A (en) * 1959-08-14 1962-11-13 Bell Telephone Labor Inc Electromechanical wave transmission systems

Also Published As

Publication number Publication date
DE1616671B1 (en) 1970-07-09
US3189852A (en) 1965-06-15

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