SG112098A1 - Surface acoustic wave device - Google Patents

Surface acoustic wave device

Info

Publication number
SG112098A1
SG112098A1 SG200407210A SG200407210A SG112098A1 SG 112098 A1 SG112098 A1 SG 112098A1 SG 200407210 A SG200407210 A SG 200407210A SG 200407210 A SG200407210 A SG 200407210A SG 112098 A1 SG112098 A1 SG 112098A1
Authority
SG
Singapore
Prior art keywords
acoustic wave
surface acoustic
wave device
wave
acoustic
Prior art date
Application number
SG200407210A
Other languages
English (en)
Inventor
Orito Satoshi
Oura Tsuyoshi
Takezaki Tohru
Ichikawa Satoshi
Wachi Hirotada
Tanaka Toshifumi
Wada Koichi
Original Assignee
Fujitsu Media Devices 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 Fujitsu Media Devices Ltd filed Critical Fujitsu Media Devices Ltd
Publication of SG112098A1 publication Critical patent/SG112098A1/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
    • H03H9/64—Filters 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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02858—Means for compensation or elimination of undesirable effects of wave front distortion
    • 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
    • H03H9/02881—Means for compensation or elimination of undesirable effects of diffraction of wave beam
    • 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
    • H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
    • 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
    • H03H9/25—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
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
SG200407210A 2003-11-18 2004-11-17 Surface acoustic wave device SG112098A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003388575A JP4246604B2 (ja) 2003-11-18 2003-11-18 弾性表面波デバイス

Publications (1)

Publication Number Publication Date
SG112098A1 true SG112098A1 (en) 2005-06-29

Family

ID=34695569

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200407210A SG112098A1 (en) 2003-11-18 2004-11-17 Surface acoustic wave device

Country Status (5)

Country Link
US (1) US7372347B2 (ja)
JP (1) JP4246604B2 (ja)
KR (1) KR100663825B1 (ja)
CN (1) CN100490320C (ja)
SG (1) SG112098A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4283076B2 (ja) * 2003-09-29 2009-06-24 富士通メディアデバイス株式会社 圧電体を用いたフィルタ
JP4727322B2 (ja) * 2005-07-06 2011-07-20 太陽誘電株式会社 弾性表面波装置
JP5115649B2 (ja) * 2009-02-25 2013-01-09 パナソニック株式会社 弾性波素子および弾性波フィルタ
EP2403141B1 (en) * 2009-02-27 2018-10-24 Seiko Epson Corporation Surface acoustic wave resonator, surface acoustic wave oscillator, and electronic device
JP5678486B2 (ja) 2010-06-17 2015-03-04 セイコーエプソン株式会社 弾性表面波共振子、弾性表面波発振器および電子機器
JP5934464B2 (ja) 2010-08-26 2016-06-15 セイコーエプソン株式会社 弾性表面波共振子、および弾性表面波発振器、ならびに電子機器
JP2012060422A (ja) * 2010-09-09 2012-03-22 Seiko Epson Corp 弾性表面波デバイス、電子機器及びセンサー装置
JP2012060418A (ja) 2010-09-09 2012-03-22 Seiko Epson Corp 弾性表面波デバイス、電子機器及びセンサー装置
JP2012060420A (ja) 2010-09-09 2012-03-22 Seiko Epson Corp 弾性表面波デバイス、電子機器及びセンサー装置
JP2012060421A (ja) 2010-09-09 2012-03-22 Seiko Epson Corp 弾性表面波デバイス、電子機器及びセンサー装置
JP2012060419A (ja) 2010-09-09 2012-03-22 Seiko Epson Corp 弾性表面波デバイス、電子機器及びセンサー装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2261654B1 (ja) * 1974-02-15 1978-01-06 Thomson Csf
JPS53114644A (en) 1977-03-17 1978-10-06 Toshiba Corp Elastic surface wave filter
US4375624A (en) * 1981-06-22 1983-03-01 Zenith Radio Corporation Surface wave acoustic device with compensation for spurious frequency response modes
US5895996A (en) 1994-09-29 1999-04-20 Seiko Epson Corporation Saw device
JP3266804B2 (ja) 1996-07-23 2002-03-18 株式会社日立製作所 弾性表面波素子
JPH10209802A (ja) 1997-01-23 1998-08-07 Hiroaki Sato 弾性表面波素子
JP3330512B2 (ja) * 1997-04-17 2002-09-30 株式会社日立製作所 弾性表面波素子
JP3482119B2 (ja) 1998-01-19 2003-12-22 エヌ・アール・エス・テクノロジー株式会社 弾性表面波素子の製造方法
JP2001267877A (ja) * 2000-03-21 2001-09-28 Sanyo Electric Co Ltd 弾性表面波デバイス

Also Published As

Publication number Publication date
US20050168302A1 (en) 2005-08-04
JP4246604B2 (ja) 2009-04-02
JP2005151365A (ja) 2005-06-09
KR20050048506A (ko) 2005-05-24
KR100663825B1 (ko) 2007-01-03
CN100490320C (zh) 2009-05-20
US7372347B2 (en) 2008-05-13
CN1619956A (zh) 2005-05-25

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