FR2437108A1 - Resonateur pour ondes acoustiques - Google Patents

Resonateur pour ondes acoustiques

Info

Publication number
FR2437108A1
FR2437108A1 FR7923576A FR7923576A FR2437108A1 FR 2437108 A1 FR2437108 A1 FR 2437108A1 FR 7923576 A FR7923576 A FR 7923576A FR 7923576 A FR7923576 A FR 7923576A FR 2437108 A1 FR2437108 A1 FR 2437108A1
Authority
FR
France
Prior art keywords
reflector
resonator
configuration
elements
pure
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.)
Withdrawn
Application number
FR7923576A
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 FR2437108A1 publication Critical patent/FR2437108A1/fr
Withdrawn legal-status Critical Current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
    • H03H9/6456—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
    • H03H9/6473—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes the electrodes being electrically interconnected
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02779—Continuous surface reflective arrays
    • 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
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • 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
    • H03H9/6459—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
    • 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)

Abstract

DANS UN RESONATEUR POUR ONDES ACOUSTIQUES, MUNI D'UNE PAIRE DE REFLECTEURS ESPACES FORMANT UNE CAVITE DE RESONANCE, CHAQUE REFLECTEUR EST FORME PAR UNE CONFIGURATION D'ELEMENTS REFLECTEURS PARALLELES. AU MOINS UN DES REFLECTEURS EST PONDERE NON PAS PAR RETRAIT PUR ET SIMPLE DE CERTAINS ELEMENTS REFLECTEURS HORS D'UNE CONFIGURATION REGULIERE NOMINALE, MAIS PAR L'ECHANGE DE CERTAINS ELEMENTS REFLECTEURS DE LA CONFIGURATION REGULIERE CONTRE DES ELEMENTS DONNANT LIEU TANT A UNE REFLEXION NETTE EGALE A ZERO AUX ENDROITS OU IL LE FAUT QU'A LA COMPENSATION AU MOINS PARTIELLE DE LA PERTURBATION DE VITESSE QUI SURVIENDRAIT PAR LEDIT RETRAIT PUR ET SIMPLE. UNE TELLE PONDERATION PEUT ETRE UTILISEE POUR SUPPRIMER LES LOBES LATERAUX D'UNE CARACTERISTIQUE DE REPONSE DE REFLECTEUR ET PAR CONSEQUENT AMELIORER LA PERFORMANCE DE BANDE D'ARRET DU RESONATEUR, PAR EXEMPLE UN RESONATEUR D'UN FILTRE ELECTRIQUE. APPLICATION: RECEPTEURS DE TELEVISION.
FR7923576A 1978-09-22 1979-09-21 Resonateur pour ondes acoustiques Withdrawn FR2437108A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7837798A GB2030407B (en) 1978-09-22 1978-09-22 Acustic wave resonators and filters

Publications (1)

Publication Number Publication Date
FR2437108A1 true FR2437108A1 (fr) 1980-04-18

Family

ID=10499847

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7923576A Withdrawn FR2437108A1 (fr) 1978-09-22 1979-09-21 Resonateur pour ondes acoustiques

Country Status (10)

Country Link
US (1) US4281301A (fr)
JP (1) JPS5547718A (fr)
AU (1) AU524913B2 (fr)
BE (1) BE878906A (fr)
CA (1) CA1149033A (fr)
DE (1) DE2937775A1 (fr)
ES (1) ES484318A1 (fr)
FR (1) FR2437108A1 (fr)
GB (1) GB2030407B (fr)
SE (1) SE436817B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454288A1 (fr) * 1990-04-19 1991-10-30 R.F. Monolithics, Inc. Structure d'électrode à vitesse constante et pouvoir réflecteur prédéterminé
EP0545672A1 (fr) * 1991-12-02 1993-06-09 Motorola, Inc. Filtre acoustique large bande à canaux parallèles et à perte faible
EP0810727A3 (fr) * 1996-05-28 1998-08-05 Fujitsu Limited Filtre à ondes acoustiques de surface avec caractéristique passe-bande améliorée et haut degré de liberté pour l'ajustage des impédances d'entrée et de sortie

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4353046A (en) * 1980-11-04 1982-10-05 R F Monolithics, Inc. Surface acoustic wave device with reflectors
US4331943A (en) * 1980-12-22 1982-05-25 Hewlett-Packard Company Acoustic wave devices having transverse mode distortions eliminated structurally
US4599532A (en) * 1984-07-05 1986-07-08 Clarion Co., Ltd. Surface acoustic wave device with anti-reflection electrode structure
JPH0646692B2 (ja) * 1986-01-10 1994-06-15 株式会社日立製作所 弾性表面波共振子
US4731595A (en) * 1986-01-24 1988-03-15 Rf Monolithics, Inc. Resonator structure
JPS62284509A (ja) * 1986-06-02 1987-12-10 Murata Mfg Co Ltd 弾性表面波共振子
JPH073695Y2 (ja) * 1987-08-03 1995-01-30 三菱電機株式会社 弾性表面波反射器
US4945354A (en) * 1988-11-25 1990-07-31 Gte Products Spurious signal correction for surface acoustic wave (SAW) security devices
DE3942148A1 (de) * 1989-12-20 1991-06-27 Siemens Ag Oberflaechenwellen-reflektorfilter
DE3942140A1 (de) * 1989-12-20 1991-06-27 Siemens Ag Oberflaechenwellen-reflektorfilter
JPH04346507A (ja) * 1991-04-17 1992-12-02 Rf Monolithics Inc 表面弾性波の一定速度と所定の反射性とを有する電極構造とその構成方法
US5270606A (en) * 1991-07-22 1993-12-14 Motorola, Inc. Processing robust acoustic reflectors
KR940704070A (ko) * 1992-10-14 1994-12-12 모리시다 요오이찌 필터 및 그 제조방법(filter and method of manufacturing the same)
US5703427A (en) * 1993-03-19 1997-12-30 Thomson-Csf Surface-wave distributed acoustic reflection transducer and filter including such a transducer
TW256966B (fr) * 1994-03-04 1995-09-11 Murata Manufacturing Co
JP2000165184A (ja) 1998-11-20 2000-06-16 Fujitsu Ltd 弾性表面波素子
JP2003258595A (ja) * 2002-02-27 2003-09-12 Fujitsu Media Device Kk 弾性表面波装置
JP4273935B2 (ja) * 2003-01-24 2009-06-03 株式会社村田製作所 弾性表面波装置、通信装置
US6842091B2 (en) * 2003-02-28 2005-01-11 Northrop Grumman Corporation Weighted SAW reflector grating using dithered acoustic reflectors
US6836197B2 (en) 2003-02-28 2004-12-28 Northrop Grumman Corporation Dual track SAW reflector filter using weighted reflective gratings
US6847272B2 (en) * 2003-02-28 2005-01-25 Northrop Grumman Corporation Weighted SAW reflector using distributed acoustic reflective dots

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991349A (fr) * 1972-12-29 1974-08-31
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices
GB1484859A (en) * 1974-09-12 1977-09-08 Marconi Co Ltd Dispersive delay lines
US3961293A (en) * 1975-02-03 1976-06-01 Texas Instruments Incorporated Multi-resonant surface wave resonator
GB1513466A (en) * 1975-09-19 1978-06-07 Mullard Ltd Acoustic surface wave devices
US4155057A (en) * 1976-03-19 1979-05-15 Raytheon Company Surface acoustic wave ring filter
JPS52149459A (en) * 1976-06-08 1977-12-12 Toyo Communication Equip Surface acoustic wave filter
US4155056A (en) * 1977-08-25 1979-05-15 Bell Telephone Laboratories, Incorporated Cascaded grating resonator filters with external input-output couplers
US4162466A (en) * 1977-09-28 1979-07-24 University Of Illinois Foundation Surface acoustic wave resonator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454288A1 (fr) * 1990-04-19 1991-10-30 R.F. Monolithics, Inc. Structure d'électrode à vitesse constante et pouvoir réflecteur prédéterminé
EP0671813A1 (fr) * 1990-04-19 1995-09-13 R F Monolithics, Inc. Structure d'électrode à vitesse constante et pouvoir réflecteur prédéterminé
EP0545672A1 (fr) * 1991-12-02 1993-06-09 Motorola, Inc. Filtre acoustique large bande à canaux parallèles et à perte faible
EP0810727A3 (fr) * 1996-05-28 1998-08-05 Fujitsu Limited Filtre à ondes acoustiques de surface avec caractéristique passe-bande améliorée et haut degré de liberté pour l'ajustage des impédances d'entrée et de sortie
US5963114A (en) * 1996-05-28 1999-10-05 Fujitsu Limited Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
US6111481A (en) * 1996-05-28 2000-08-29 Fujitsu Limited Surface-acoustic-wave three interdigital electrodes with different numbers of finger pairs
US6114926A (en) * 1996-05-28 2000-09-05 Fujitsu Limited Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
US6271739B1 (en) 1996-05-28 2001-08-07 Fujitsu Limited Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
EP1204206A3 (fr) * 1996-05-28 2002-05-22 Fujitsu Limited Dispositif à ondes acoustiques de surface

Also Published As

Publication number Publication date
AU524913B2 (en) 1982-10-07
US4281301A (en) 1981-07-28
BE878906A (fr) 1980-03-20
AU5093479A (en) 1980-03-27
SE7907771L (sv) 1980-03-23
SE436817B (sv) 1985-01-21
CA1149033A (fr) 1983-06-28
DE2937775A1 (de) 1980-04-03
GB2030407B (en) 1982-12-08
JPS5547718A (en) 1980-04-04
GB2030407A (en) 1980-04-02
ES484318A1 (es) 1980-04-16

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