AU2002221018A1 - Saw wave-guides - Google Patents

Saw wave-guides

Info

Publication number
AU2002221018A1
AU2002221018A1 AU2002221018A AU2101802A AU2002221018A1 AU 2002221018 A1 AU2002221018 A1 AU 2002221018A1 AU 2002221018 A AU2002221018 A AU 2002221018A AU 2101802 A AU2101802 A AU 2101802A AU 2002221018 A1 AU2002221018 A1 AU 2002221018A1
Authority
AU
Australia
Prior art keywords
guides
saw wave
saw
wave
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.)
Abandoned
Application number
AU2002221018A
Inventor
Yuri Abramov
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.)
Soliton Holdings Corp
Original Assignee
Soliton Holdings 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 Soliton Holdings Corp filed Critical Soliton Holdings Corp
Publication of AU2002221018A1 publication Critical patent/AU2002221018A1/en
Abandoned 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 devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/02771—Reflector banks
    • 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
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02905—Measures for separating propagation paths on substrate
    • 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
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14505—Unidirectional SAW transducers
    • 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
    • H03H9/125—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
    • 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
    • H03H9/125—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
    • H03H9/1457—Transducers having different finger widths
    • 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
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6443—Coupled resonator filters having two acoustic tracks being acoustically coupled
    • H03H9/6446—Coupled resonator filters having two acoustic tracks being acoustically coupled by floating multistrip couplers
    • 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
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation
    • 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
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14538—Formation
    • 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
    • H03H9/125—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
    • H03H9/14552—Transducers of particular shape or position comprising split fingers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
AU2002221018A 2000-11-29 2001-11-29 Saw wave-guides Abandoned AU2002221018A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US25382900P 2000-11-29 2000-11-29
US60/253,829 2000-11-29
PCT/IL2001/001107 WO2002043462A2 (en) 2000-11-29 2001-11-29 Saw wave-guides

Publications (1)

Publication Number Publication Date
AU2002221018A1 true AU2002221018A1 (en) 2002-06-11

Family

ID=22961873

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002221018A Abandoned AU2002221018A1 (en) 2000-11-29 2001-11-29 Saw wave-guides

Country Status (3)

Country Link
US (1) US6967545B2 (en)
AU (1) AU2002221018A1 (en)
WO (1) WO2002043462A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4283076B2 (en) * 2003-09-29 2009-06-24 富士通メディアデバイス株式会社 Filter using piezoelectric material
KR100535405B1 (en) * 2003-12-30 2005-12-08 현대자동차주식회사 Surface acoustic wave sensor for measuring pressure and temperature for tire
KR100778651B1 (en) * 2006-07-06 2007-11-22 주식회사 엠디티 Tire pressure monitoring system and method for tire pressure monitoring
TWI383313B (en) * 2007-06-13 2013-01-21 Egalax Empia Technology Inc Sensing device of surface acoustic wave touch panel
US20090079709A1 (en) * 2007-09-20 2009-03-26 Egalax_Empia Technology Inc. Sensing device of surface acoustic wave touch panel
DE102010053674B4 (en) 2010-12-07 2017-08-24 Snaptrack Inc. Electroacoustic transducer
CN106357232B (en) * 2016-09-30 2018-09-14 扬州大学 The production method of multiphase unidirectional interdigital transducer
US20230130157A1 (en) * 2020-03-10 2023-04-27 Sensanna Incorporated An alternative structure for realizing a transversal saw filter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693414A (en) * 1979-12-27 1981-07-29 Fujitsu Ltd Elastic surface wave element
US5111168A (en) * 1990-08-15 1992-05-05 Texas Instruments Incorporated Real-time, in-situ saw filter delay adjustment
FR2740908B1 (en) * 1995-11-07 1997-11-28 Thomson Csf DIFFERENTIAL SURFACE ACOUSTIC WAVE TRANSDUCER
JP3330512B2 (en) * 1997-04-17 2002-09-30 株式会社日立製作所 Surface acoustic wave device
JP3253568B2 (en) * 1997-08-29 2002-02-04 富士通株式会社 Multi-stage surface acoustic wave filter
JP3487772B2 (en) * 1998-03-11 2004-01-19 富士通株式会社 Surface acoustic wave filter
JP3315646B2 (en) * 1998-06-19 2002-08-19 富士通株式会社 Surface acoustic wave filter
JP4203152B2 (en) * 1998-09-11 2008-12-24 株式会社日立メディアエレクトロニクス Surface acoustic wave device

Also Published As

Publication number Publication date
US20040096139A1 (en) 2004-05-20
WO2002043462A2 (en) 2002-06-06
US6967545B2 (en) 2005-11-22
WO2002043462A3 (en) 2003-01-30

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