SE7907771L - Anordning vid akustisk vagresonator - Google Patents

Anordning vid akustisk vagresonator

Info

Publication number
SE7907771L
SE7907771L SE7907771A SE7907771A SE7907771L SE 7907771 L SE7907771 L SE 7907771L SE 7907771 A SE7907771 A SE 7907771A SE 7907771 A SE7907771 A SE 7907771A SE 7907771 L SE7907771 L SE 7907771L
Authority
SE
Sweden
Prior art keywords
vagresonator
acoustic
acoustic vagresonator
Prior art date
Application number
SE7907771A
Other languages
English (en)
Other versions
SE436817B (sv
Inventor
R Stevens
R F Mitchell
P D White
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of SE7907771L publication Critical patent/SE7907771L/sv
Publication of SE436817B publication Critical patent/SE436817B/sv

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
    • 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 devices; 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 devices; 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 devices; 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 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
    • H03H9/14544—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)
SE7907771A 1978-09-22 1979-09-19 Akustisk vagresonator SE436817B (sv)

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 (2)

Publication Number Publication Date
SE7907771L true SE7907771L (sv) 1980-03-23
SE436817B SE436817B (sv) 1985-01-21

Family

ID=10499847

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7907771A SE436817B (sv) 1978-09-22 1979-09-19 Akustisk vagresonator

Country Status (10)

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

Families Citing this family (24)

* 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
DE3942140A1 (de) * 1989-12-20 1991-06-27 Siemens Ag Oberflaechenwellen-reflektorfilter
DE3942148A1 (de) * 1989-12-20 1991-06-27 Siemens Ag Oberflaechenwellen-reflektorfilter
US5051644A (en) * 1990-04-19 1991-09-24 R. F. Monolithics, Inc. Electrode structure with constant velocity and predetermined reflectivity
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
US5296824A (en) * 1991-12-02 1994-03-22 Motorola, Inc. Low loss wide bandwidth parallel channel acoustic filter
KR0148749B1 (ko) * 1992-10-14 1998-08-17 모리시다 요오이찌 필터 및 그 제조방법
US5703427A (en) * 1993-03-19 1997-12-30 Thomson-Csf Surface-wave distributed acoustic reflection transducer and filter including such a transducer
TW256966B (sv) * 1994-03-04 1995-09-11 Murata Manufacturing Co
JP3239064B2 (ja) * 1996-05-28 2001-12-17 富士通株式会社 弾性表面波装置
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
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
US6842091B2 (en) * 2003-02-28 2005-01-11 Northrop Grumman Corporation Weighted SAW reflector grating using dithered acoustic reflectors

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991349A (sv) * 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

Also Published As

Publication number Publication date
GB2030407B (en) 1982-12-08
FR2437108A1 (fr) 1980-04-18
GB2030407A (en) 1980-04-02
DE2937775A1 (de) 1980-04-03
BE878906A (fr) 1980-03-20
US4281301A (en) 1981-07-28
SE436817B (sv) 1985-01-21
AU5093479A (en) 1980-03-27
CA1149033A (en) 1983-06-28
AU524913B2 (en) 1982-10-07
ES484318A1 (es) 1980-04-16
JPS5547718A (en) 1980-04-04

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