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DE69120372D1 - Einphasiger, einseitig gerichteter, gruppenförmig angeordneter Wandler mit 3/8 Lambda und 5/8 Lambda Bemusterung - Google Patents

Einphasiger, einseitig gerichteter, gruppenförmig angeordneter Wandler mit 3/8 Lambda und 5/8 Lambda Bemusterung

Info

Publication number
DE69120372D1
DE69120372D1 DE69120372T DE69120372T DE69120372D1 DE 69120372 D1 DE69120372 D1 DE 69120372D1 DE 69120372 T DE69120372 T DE 69120372T DE 69120372 T DE69120372 T DE 69120372T DE 69120372 D1 DE69120372 D1 DE 69120372D1
Authority
DE
Germany
Prior art keywords
lambda
patterning
sided
phase
group
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 - Fee Related
Application number
DE69120372T
Other languages
English (en)
Other versions
DE69120372T2 (de
Inventor
Peter Wright
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.)
RF Monolithics Inc
Original Assignee
RF Monolithics Inc
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 RF Monolithics Inc filed Critical RF Monolithics Inc
Publication of DE69120372D1 publication Critical patent/DE69120372D1/de
Application granted granted Critical
Publication of DE69120372T2 publication Critical patent/DE69120372T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03H9/125—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 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
    • H03H9/14517—Means for weighting
    • 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
    • H03H9/14517—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 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
    • H03H9/14517—Means for weighting
    • H03H9/14526—Finger withdrawal
    • 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
    • H03H9/14538—Formation
    • 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
    • H03H9/14552—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)
DE69120372T 1990-11-02 1991-01-25 Einphasiger, einseitig gerichteter, gruppenförmig angeordneter Wandler mit 3/8 Lambda und 5/8 Lambda Bemusterung Expired - Fee Related DE69120372T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/608,354 US5073763A (en) 1990-11-02 1990-11-02 Group single-phase unidirectional transducers with 3/8λand 5/8λ sampling

Publications (2)

Publication Number Publication Date
DE69120372D1 true DE69120372D1 (de) 1996-07-25
DE69120372T2 DE69120372T2 (de) 1996-11-14

Family

ID=24436113

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69120372T Expired - Fee Related DE69120372T2 (de) 1990-11-02 1991-01-25 Einphasiger, einseitig gerichteter, gruppenförmig angeordneter Wandler mit 3/8 Lambda und 5/8 Lambda Bemusterung

Country Status (6)

Country Link
US (1) US5073763A (de)
EP (1) EP0483940B1 (de)
JP (1) JPH05267974A (de)
CA (1) CA2034397C (de)
DE (1) DE69120372T2 (de)
FI (1) FI914778L (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508325A1 (de) * 1991-04-11 1992-10-14 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Reflektive Verzögerungsleitung in Oberflächenwellentechnik
US5406159A (en) * 1993-11-11 1995-04-11 Rf Monolithics, Inc. Surface acoustic wave gratings having selected reflectivity
US5793146A (en) * 1993-11-12 1998-08-11 Rf Monolithics, Inc. Surface acoustic wave transducer having selected reflectivity
JP3106387B2 (ja) * 1995-04-04 2000-11-06 株式会社村田製作所 弾性表面波装置
JP3268179B2 (ja) * 1995-11-08 2002-03-25 正男 竹内 弾性表面波変換器及びこの変換器を用いた弾性表面波フィルタ
US6147574A (en) * 1997-11-20 2000-11-14 Murata Manufacturing Co., Ltd. Unidirectional surface acoustic wave transducer and transversal-type saw filter having the same
JP2000036722A (ja) * 1998-05-11 2000-02-02 Tdk Corp 弾性表面波装置の設計方法および弾性表面波装置
DE10041040A1 (de) * 2000-08-22 2002-03-07 Zeiss Carl Vorrichtung und Verfahren zur Belichtung einer strahlungsempfindlichen Schicht mittels geladener Teilchen sowie Maske hierfür
US6480076B2 (en) 2000-12-21 2002-11-12 Trw Inc. Recessed reflector single phase unidirectional transducer
DE10113788A1 (de) 2001-03-21 2002-09-26 Zeiss Carl Beugungsoptische Komponente, Beleuchtungssystem und Belichtungssystem mit einer solchen beugungsoptischen Komponente und Belichtungsverfahren unter Verwendung eines solchen Belichtungssystems
US6534896B2 (en) 2001-05-15 2003-03-18 Nortel Networks Limited Spatial harmonic transducers for surface wave devices
US6664871B2 (en) 2002-05-16 2003-12-16 Northrop Grumman Corporation Cascaded surface acoustic wave filter system for cancelling time spurious responses
US7002281B2 (en) 2003-07-16 2006-02-21 Biode Inc. Multi-reflective acoustic wave device
DE102004037819B4 (de) 2004-08-04 2021-12-16 Snaptrack, Inc. Elektroakustisches Bauelement mit geringen Verlusten
DE102005045638B4 (de) * 2005-09-23 2017-02-02 Epcos Ag Mit Oberflächenwellen arbeitender Wandler
US8436509B1 (en) * 2008-07-08 2013-05-07 Saudia Corporation High-frequency shear-horizontal surface acoustic wave sensor
US9484471B2 (en) * 2014-09-12 2016-11-01 Qorvo Us, Inc. Compound varactor
US10261078B2 (en) 2015-08-17 2019-04-16 National Technology & Engineering Solutions Of Sandia, Llc Shear horizontal surface acoustic wave (SH-SAW) resonators and arrays thereof
US10009002B1 (en) 2015-09-04 2018-06-26 National Technology & Engineering Solutions Of Sandia, Llc Methods for suppressing spurious modes in microresonators
JP6632481B2 (ja) * 2016-06-22 2020-01-22 太陽誘電株式会社 弾性波共振器、フィルタおよびマルチプレクサ
US11405014B1 (en) 2019-06-27 2022-08-02 National Technology & Engineering Solutions Of Sandia, Llc Solid-state tuning behavior in acoustic resonators

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792381A (en) * 1973-02-20 1974-02-12 Hughes Aircraft Co Surface-wave electro-acoustic transducer
US3946342A (en) * 1973-08-10 1976-03-23 Texas Instruments Incorporated Weighting surface wave filters by withdrawing electrodes
US3979702A (en) * 1974-04-08 1976-09-07 The Magnavox Company Apparatus and method for oversampled transducers in acoustic surface wave devices
US4353046A (en) * 1980-11-04 1982-10-05 R F Monolithics, Inc. Surface acoustic wave device with reflectors
US4902925A (en) * 1982-07-29 1990-02-20 R.F. Monolithics, Inc. Reflectionless transducer
JPS60140917A (ja) * 1983-12-28 1985-07-25 Toshiba Corp 弾性表面波トランスジユ−サ
JPS60145716A (ja) * 1984-01-09 1985-08-01 Toshiba Corp 弾性表面波装置
JPS60208110A (ja) * 1984-03-30 1985-10-19 Kazuhiko Yamanouchi 反射器内蔵型一方向性弾性表面波変換器
US4910839A (en) * 1984-12-03 1990-03-27 R.F. Monolithics, Inc. Method of making a single phase unidirectional surface acoustic wave transducer
JPS639216A (ja) * 1986-06-30 1988-01-14 Nec Corp 一方向性弾性表面波フイルタ
DE3750940T2 (de) * 1986-07-29 1995-05-11 Rf Monolithics Wandler.
JPS63136706A (ja) * 1986-11-28 1988-06-08 Toshiba Corp 弾性表面波トランスジユ−サ
JP2566950B2 (ja) * 1987-04-14 1996-12-25 三井東圧化学株式会社 ビスマレイミドおよびその製造方法

Also Published As

Publication number Publication date
FI914778A0 (fi) 1991-10-10
US5073763A (en) 1991-12-17
EP0483940A1 (de) 1992-05-06
CA2034397C (en) 1995-12-12
JPH05267974A (ja) 1993-10-15
FI914778A7 (fi) 1992-05-03
FI914778L (fi) 1992-05-03
EP0483940B1 (de) 1996-06-19
DE69120372T2 (de) 1996-11-14
CA2034397A1 (en) 1992-05-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee