ES404981A1 - Un dispositivo de filtro de ondas superficiales. - Google Patents

Un dispositivo de filtro de ondas superficiales.

Info

Publication number
ES404981A1
ES404981A1 ES404981A ES404981A ES404981A1 ES 404981 A1 ES404981 A1 ES 404981A1 ES 404981 A ES404981 A ES 404981A ES 404981 A ES404981 A ES 404981A ES 404981 A1 ES404981 A1 ES 404981A1
Authority
ES
Spain
Prior art keywords
surface wave
acoustic surface
sections
wave devices
electrodes
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
ES404981A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES404981A1 publication Critical patent/ES404981A1/es
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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • 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
    • H03H9/125—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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
ES404981A 1971-07-21 1972-07-19 Un dispositivo de filtro de ondas superficiales. Expired ES404981A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3417071A GB1362238A (en) 1971-07-21 1971-07-21 Acoustic surface wave devices

Publications (1)

Publication Number Publication Date
ES404981A1 true ES404981A1 (es) 1975-07-01

Family

ID=10362265

Family Applications (1)

Application Number Title Priority Date Filing Date
ES404981A Expired ES404981A1 (es) 1971-07-21 1972-07-19 Un dispositivo de filtro de ondas superficiales.

Country Status (10)

Country Link
US (1) US3801935A (es)
JP (1) JPS5420108B1 (es)
AU (1) AU458649B2 (es)
CA (1) CA965491A (es)
DE (1) DE2234564A1 (es)
ES (1) ES404981A1 (es)
FR (1) FR2146804A5 (es)
GB (1) GB1362238A (es)
IT (1) IT961468B (es)
NL (1) NL7209835A (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1395294A (en) * 1973-06-05 1975-05-21 Mullard Ltd Acoustic surface wave device
JPS5434519B2 (es) * 1973-08-31 1979-10-27
US4166258A (en) * 1974-08-29 1979-08-28 International Business Machines Corporation Thin-film integrated circuit with tank circuit characteristics and applications to thin-film filters and oscillators
US4223284A (en) 1977-11-07 1980-09-16 Murata Manufacturing Co., Ltd. Acoustic surface wave device
US4384264A (en) * 1979-04-24 1983-05-17 Murata Manufacturing Company Ltd. Surface acoustic wave device
US4625184A (en) * 1982-07-02 1986-11-25 Clarion Co., Ltd. Surface acoustic wave device with impedance matching network formed thereon
US4620191A (en) * 1983-06-30 1986-10-28 Halvor Skeie Surface acoustic wave passive transponder having parallel acoustic wave paths
US5363074A (en) * 1992-10-19 1994-11-08 Motorola, Inc. Saw structure having serially coupled transducers with overlapping fingers
US6801100B2 (en) * 1996-05-23 2004-10-05 Matsushita Electric Industrial Co., Ltd. Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same
US6107910A (en) 1996-11-29 2000-08-22 X-Cyte, Inc. Dual mode transmitter/receiver and decoder for RF transponder tags
US6208062B1 (en) 1997-08-18 2001-03-27 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6114971A (en) * 1997-08-18 2000-09-05 X-Cyte, Inc. Frequency hopping spread spectrum passive acoustic wave identification device
US5986382A (en) 1997-08-18 1999-11-16 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6060815A (en) * 1997-08-18 2000-05-09 X-Cyte, Inc. Frequency mixing passive transponder
JP2000244275A (ja) * 1999-02-19 2000-09-08 Murata Mfg Co Ltd Ｓａｗ共振子フィルタ
JP3402311B2 (ja) * 2000-05-19 2003-05-06 株式会社村田製作所 弾性表面波装置
JP5898908B2 (ja) * 2011-10-11 2016-04-06 日本電波工業株式会社 弾性波フィルタ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600710A (en) * 1968-08-12 1971-08-17 Zenith Radio Corp Acoustic surface wave filter
US3675054A (en) * 1970-12-02 1972-07-04 Texas Instruments Inc Series connection of interdigitated surface wave transducers

Also Published As

Publication number Publication date
US3801935A (en) 1974-04-02
AU4457372A (en) 1974-01-17
NL7209835A (es) 1973-01-23
IT961468B (it) 1973-12-10
JPS5420108B1 (es) 1979-07-20
AU458649B2 (en) 1975-03-06
DE2234564A1 (de) 1973-02-01
CA965491A (en) 1975-04-01
GB1362238A (en) 1974-07-30
FR2146804A5 (es) 1973-03-02

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