DE3168823D1 - Surface acoustic wave resonator - Google Patents

Surface acoustic wave resonator

Info

Publication number
DE3168823D1
DE3168823D1 DE8181109343T DE3168823T DE3168823D1 DE 3168823 D1 DE3168823 D1 DE 3168823D1 DE 8181109343 T DE8181109343 T DE 8181109343T DE 3168823 T DE3168823 T DE 3168823T DE 3168823 D1 DE3168823 D1 DE 3168823D1
Authority
DE
Germany
Prior art keywords
acoustic wave
surface acoustic
wave resonator
resonator
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.)
Expired
Application number
DE8181109343T
Other languages
German (de)
English (en)
Inventor
Peter S Cross
William R Shreve
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of DE3168823D1 publication Critical patent/DE3168823D1/de
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
    • H03H9/46—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
    • H03H9/645—Coupled resonator filters having two acoustic tracks being acoustically coupled by grating reflectors overlapping both tracks
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/25—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 elements; 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—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
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE8181109343T 1980-12-22 1981-10-30 Surface acoustic wave resonator Expired DE3168823D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/218,894 US4331943A (en) 1980-12-22 1980-12-22 Acoustic wave devices having transverse mode distortions eliminated structurally

Publications (1)

Publication Number Publication Date
DE3168823D1 true DE3168823D1 (en) 1985-03-21

Family

ID=22816919

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181109343T Expired DE3168823D1 (en) 1980-12-22 1981-10-30 Surface acoustic wave resonator

Country Status (4)

Country Link
US (1) US4331943A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0054723B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS57127319A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3168823D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117992B (en) * 1982-03-24 1985-09-18 Philips Electronic Associated Parallel-series acoustic wave device arrangement
JPS587911A (ja) * 1982-06-17 1983-01-17 Toshiba Corp 弾性表面波共振子装置
USRE33957E (en) * 1982-07-26 1992-06-09 Toyo Communication Equipment Co., Ltd. High frequency narrow-band multi-mode filter
JPS5936412A (ja) * 1982-08-23 1984-02-28 Toyo Commun Equip Co Ltd 反射器を備えたｉｄｔ型共振器又は多重モ−ド・フイルタの電極構造
JPS59159025U (ja) * 1983-04-08 1984-10-25 株式会社村田製作所 表面波装置
GB2149253A (en) * 1983-10-31 1985-06-05 Philips Electronic Associated Surface acoustic wave device
JPS60124110A (ja) * 1983-12-08 1985-07-03 Alps Electric Co Ltd 弾性表面波素子
US4933588A (en) * 1988-12-23 1990-06-12 Raytheon Company Higher order transverse mode suppression in surface acoustic wave resonators
JP2632407B2 (ja) * 1989-02-14 1997-07-23 国際電気株式会社 単一モード２端子対弾性表面波共振子
DE4018784A1 (de) * 1990-06-12 1991-12-19 Siemens Ag Oberflaechenwellen-reflektorfilter
CA2068531A1 (en) * 1989-11-14 1991-05-15 Juergen Machui Surface-wave reflector-filter
DE19638455A1 (de) 1996-09-19 1998-04-02 Siemens Matsushita Components Twin-Dualmode-Filter
US6384698B1 (en) * 1999-04-28 2002-05-07 Seiko Epson Corporation Transverse double mode saw filter
KR100476913B1 (ko) * 2000-06-27 2005-03-17 가부시끼가이샤 도시바 탄성표면파 소자
US20060094988A1 (en) * 2004-10-28 2006-05-04 Tosaya Carol A Ultrasonic apparatus and method for treating obesity or fat-deposits or for delivering cosmetic or other bodily therapy
JP6115645B2 (ja) * 2013-09-06 2017-04-19 株式会社村田製作所 弾性波共振子、弾性波フィルタ装置及びデュプレクサ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices
GB1490959A (en) * 1976-02-16 1977-11-09 Mullard Ltd Electrical oscillators
US4060777A (en) * 1976-05-19 1977-11-29 Piezo Technology Inc. Guided elastic surface wave filter
US4144507A (en) * 1976-09-29 1979-03-13 Texas Instruments Incorporated Surface acoustic wave resonator incorporating coupling transducer into reflecting arrays
GB1554366A (en) * 1977-02-04 1979-10-17 Philips Electronic Associated Acoustic surface wave devices
JPS53145595A (en) * 1977-05-25 1978-12-18 Nippon Telegr & Teleph Corp <Ntt> Elastic surface wave oscillator
GB2033185B (en) * 1978-09-22 1983-05-18 Secr Defence Acoustic wave device with temperature stabilisation
GB2030407B (en) * 1978-09-22 1982-12-08 Philips Electronic Associated Acustic wave resonators and filters
FR2437686A1 (fr) * 1978-09-29 1980-04-25 Mayer Ferdy Element electrique a pertes, tel que fil, cable et ecran, resistant et absorbant

Also Published As

Publication number Publication date
US4331943A (en) 1982-05-25
EP0054723A1 (de) 1982-06-30
EP0054723B1 (de) 1985-02-06
JPH026451B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-02-09
JPS57127319A (en) 1982-08-07

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee