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GB2000409A - Resonators employing surface skimming bulk waves - Google Patents

Resonators employing surface skimming bulk waves

Info

Publication number
GB2000409A
GB2000409A GB7827218A GB7827218A GB2000409A GB 2000409 A GB2000409 A GB 2000409A GB 7827218 A GB7827218 A GB 7827218A GB 7827218 A GB7827218 A GB 7827218A GB 2000409 A GB2000409 A GB 2000409A
Authority
GB
United Kingdom
Prior art keywords
substrate
skimming bulk
waves
surface skimming
acoustic
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.)
Withdrawn
Application number
GB7827218A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Priority to GB7827218A priority Critical patent/GB2000409A/en
Publication of GB2000409A publication Critical patent/GB2000409A/en
Withdrawn legal-status Critical Current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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02645—Waffle-iron or dot arrays
    • 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
    • H03H9/02236—Details of surface skimming bulk wave devices
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02779—Continuous surface reflective arrays
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02669—Edge reflection structures, i.e. resonating structures without metallic reflectors, e.g. Bleustein-Gulyaev-Shimizu [BGS], shear horizontal [SH], shear transverse [ST], Love waves devices

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

An acoustic wave device including a substrate (a) structurally orientated to enhance the propagation of acoustic surface skimming bulk waves in the substrate adjacent a pre- determined surface (c) of the substrate and a transducer (b) disposed on said surface to couple to said waves, characterised in that a pair of opposing end faces (d) of the substrate is provided to multiply reflect said waves propagating adjacent said surface (c) and to form a resonant cavity capable of supporting an acoustic surface skimming bulk standing wave at a pre- determined frequency, and in that said transducer (b) is arranged in said cavity for coupling with acoustic surface skimming bulk standing wave energy at said frequency. <IMAGE>
GB7827218A 1977-04-07 1978-06-19 Resonators employing surface skimming bulk waves Withdrawn GB2000409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7827218A GB2000409A (en) 1977-04-07 1978-06-19 Resonators employing surface skimming bulk waves

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1950178 1977-04-07
GB7827218A GB2000409A (en) 1977-04-07 1978-06-19 Resonators employing surface skimming bulk waves

Publications (1)

Publication Number Publication Date
GB2000409A true GB2000409A (en) 1979-01-04

Family

ID=26254087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827218A Withdrawn GB2000409A (en) 1977-04-07 1978-06-19 Resonators employing surface skimming bulk waves

Country Status (1)

Country Link
GB (1) GB2000409A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290033A (en) * 1979-06-04 1981-09-15 Trw Inc. Shallow bulk acoustic wave devices employing energy trapping
US4409570A (en) * 1981-11-16 1983-10-11 Sperry Corporation Separated substrate acoustic wave device
DE4011978A1 (en) * 1989-04-14 1990-10-18 Hitachi Ltd Saw device with deflection of undesired components - has waveguide to tap-off components propagating obliquely to interdigitated electrodes
GB2287580A (en) * 1994-03-04 1995-09-20 Murata Manufacturing Co Piezoelectric saw resonators
EP0762643A1 (en) * 1995-08-30 1997-03-12 Murata Manufacturing Co., Ltd. Acoustic surface wave filter
US5793147A (en) * 1994-05-30 1998-08-11 Murata Manufacturing Co., Ltd. Surface wave resonator having single component including a plurality of resonant units
CN1075908C (en) * 1994-05-30 2001-12-05 株式会社村田制作所 Surface wave resonator
DE19838573B4 (en) * 1997-08-29 2004-01-29 Murata Mfg. Co., Ltd., Nagaokakyo Surface acoustic wave filter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290033A (en) * 1979-06-04 1981-09-15 Trw Inc. Shallow bulk acoustic wave devices employing energy trapping
US4409570A (en) * 1981-11-16 1983-10-11 Sperry Corporation Separated substrate acoustic wave device
DE4011978A1 (en) * 1989-04-14 1990-10-18 Hitachi Ltd Saw device with deflection of undesired components - has waveguide to tap-off components propagating obliquely to interdigitated electrodes
GB2287580A (en) * 1994-03-04 1995-09-20 Murata Manufacturing Co Piezoelectric saw resonators
GB2287580B (en) * 1994-03-04 1998-04-01 Murata Manufacturing Co Piezoelectric resonators
US5767603A (en) * 1994-03-04 1998-06-16 Murata Manufacturing Co., Ltd. Piezoelectric resonators for trap circuits having a plurality of trap frequencies
CN1089968C (en) * 1994-03-04 2002-08-28 株式会社村田制作所 Piezoelectric resonators for trap circuits having a plurality of trap frequeucies
US5793147A (en) * 1994-05-30 1998-08-11 Murata Manufacturing Co., Ltd. Surface wave resonator having single component including a plurality of resonant units
CN1075908C (en) * 1994-05-30 2001-12-05 株式会社村田制作所 Surface wave resonator
EP0762643A1 (en) * 1995-08-30 1997-03-12 Murata Manufacturing Co., Ltd. Acoustic surface wave filter
US5838217A (en) * 1995-08-30 1998-11-17 Murata Manufacturing Co., Ltd. Longitudinally coupling acoustic surface wave double mode filter utilizing end-face reflecting waves
DE19838573B4 (en) * 1997-08-29 2004-01-29 Murata Mfg. Co., Ltd., Nagaokakyo Surface acoustic wave filter

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)