SE0203155D0 - Tunable acoustic wave device - Google Patents

Tunable acoustic wave device

Info

Publication number
SE0203155D0
SE0203155D0 SE0203155A SE0203155A SE0203155D0 SE 0203155 D0 SE0203155 D0 SE 0203155D0 SE 0203155 A SE0203155 A SE 0203155A SE 0203155 A SE0203155 A SE 0203155A SE 0203155 D0 SE0203155 D0 SE 0203155D0
Authority
SE
Sweden
Prior art keywords
electric field
acoustic wave
dielectric permittivity
tuning
tunable
Prior art date
Application number
SE0203155A
Other languages
Swedish (sv)
Other versions
SE524009C2 (en
SE0203155L (en
Inventor
Sture Petersson
Alexander M Grishin
Original Assignee
Sture Petersson
Alexander M Grishin
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 Sture Petersson, Alexander M Grishin filed Critical Sture Petersson
Priority to SE0203155A priority Critical patent/SE524009C2/en
Publication of SE0203155D0 publication Critical patent/SE0203155D0/en
Priority to PCT/SE2003/001648 priority patent/WO2004038915A1/en
Priority to AU2003274861A priority patent/AU2003274861A1/en
Publication of SE0203155L publication Critical patent/SE0203155L/en
Publication of SE524009C2 publication Critical patent/SE524009C2/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/562—Monolithic crystal filters comprising a ceramic piezoelectric layer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/176—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of ceramic material
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/564—Monolithic crystal filters implemented with thin-film techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H2009/02165—Tuning
    • H03H2009/02173—Tuning of film bulk acoustic resonators [FBAR]
    • H03H2009/02188—Electrically tuning
    • H03H2009/02196—Electrically tuning operating on the FBAR element, e.g. by direct application of a tuning DC voltage

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

The invention discloses a tunable acoustic wave device (100; 200) comprising a piezoelectric material (120; 220) with a tunable dielectric permittivity. The dielectric permittivity of the material is tuned by applying a tuning electric field (190), preferably a DC-bias field, low frequency AC field, pulsed electric field or AC electric field superimposed onto an electric field pulse, thereto. By tuning the dielectric permittivity, the operation characteristics of the device (100; 200), including the acoustic wave velocity in the material (120; 220) and the resonance frequency and bandwidth of the device (100; 200), may be tuned. The tuning electric field (190) may applied by superimposing it onto the input high frequency electric field signal of the device (100; 200) or by applying it over at least a portion of the piezoelectric material (120; 220). A piezoelectric material (120; 220) with a tunable dielectric permittivity can be found in ceramic crystalline superparaelectric materials, e.g. perovskite niobates-tantalates.
SE0203155A 2002-10-24 2002-10-25 Adjustable device for acoustic wave and method for tuning device for acoustic wave SE524009C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0203155A SE524009C2 (en) 2002-10-25 2002-10-25 Adjustable device for acoustic wave and method for tuning device for acoustic wave
PCT/SE2003/001648 WO2004038915A1 (en) 2002-10-24 2003-10-23 Tunable acoustic wave device
AU2003274861A AU2003274861A1 (en) 2002-10-24 2003-10-23 Tunable acoustic wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0203155A SE524009C2 (en) 2002-10-25 2002-10-25 Adjustable device for acoustic wave and method for tuning device for acoustic wave

Publications (3)

Publication Number Publication Date
SE0203155D0 true SE0203155D0 (en) 2002-10-25
SE0203155L SE0203155L (en) 2004-04-25
SE524009C2 SE524009C2 (en) 2004-06-15

Family

ID=20289368

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0203155A SE524009C2 (en) 2002-10-24 2002-10-25 Adjustable device for acoustic wave and method for tuning device for acoustic wave

Country Status (3)

Country Link
AU (1) AU2003274861A1 (en)
SE (1) SE524009C2 (en)
WO (1) WO2004038915A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108463949A (en) * 2016-01-15 2018-08-28 瑞典爱立信有限公司 miniature tunable filter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060001329A1 (en) * 2004-06-30 2006-01-05 Valluri Rao FBAR device frequency stabilized against temperature drift
CN117792332B (en) * 2024-02-23 2024-05-03 电子科技大学 Electric tuning film bulk acoustic resonator based on large stress loading structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622013A1 (en) * 1996-05-31 1997-12-11 Siemens Ag Acoustic electronic component working with surface acoustic waves
AU2001273465A1 (en) * 2000-07-13 2002-01-30 Rutgers, The State University Integrated tunable surface acoustic wave technology and systems provided thereby
US6407649B1 (en) * 2001-01-05 2002-06-18 Nokia Corporation Monolithic FBAR duplexer and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108463949A (en) * 2016-01-15 2018-08-28 瑞典爱立信有限公司 miniature tunable filter

Also Published As

Publication number Publication date
SE524009C2 (en) 2004-06-15
WO2004038915A1 (en) 2004-05-06
SE0203155L (en) 2004-04-25
AU2003274861A1 (en) 2004-05-13

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Legal Events

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NUG Patent has lapsed