IT9020124A0 - Filtro d'onda elastica superficiale - Google Patents

Filtro d'onda elastica superficiale

Info

Publication number
IT9020124A0
IT9020124A0 IT9020124A IT2012490A IT9020124A0 IT 9020124 A0 IT9020124 A0 IT 9020124A0 IT 9020124 A IT9020124 A IT 9020124A IT 2012490 A IT2012490 A IT 2012490A IT 9020124 A0 IT9020124 A0 IT 9020124A0
Authority
IT
Italy
Prior art keywords
wave filter
elastic wave
surface elastic
filter
wave
Prior art date
Application number
IT9020124A
Other languages
English (en)
Other versions
IT1239726B (it
IT9020124A1 (it
Inventor
Yatsuda Hiromi
Takeuchi Yoshihiko
Original Assignee
Japan Radio Co Ltd
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 Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Publication of IT9020124A0 publication Critical patent/IT9020124A0/it
Publication of IT9020124A1 publication Critical patent/IT9020124A1/it
Application granted granted Critical
Publication of IT1239726B publication Critical patent/IT1239726B/it

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
    • 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
    • H03H9/6426—Combinations of the characteristics of different transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Superheterodyne Receivers (AREA)
  • Pens And Brushes (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Filtering Materials (AREA)
IT20124A 1989-04-25 1990-04-24 Filtro d'onda elastica superficiale IT1239726B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1106936A JP2601543B2 (ja) 1989-04-25 1989-04-25 弾性表面波フィルタ

Publications (3)

Publication Number Publication Date
IT9020124A0 true IT9020124A0 (it) 1990-04-24
IT9020124A1 IT9020124A1 (it) 1991-10-24
IT1239726B IT1239726B (it) 1993-11-15

Family

ID=14446279

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20124A IT1239726B (it) 1989-04-25 1990-04-24 Filtro d'onda elastica superficiale

Country Status (10)

Country Link
US (1) US5175519A (it)
JP (1) JP2601543B2 (it)
KR (1) KR950000082B1 (it)
CA (1) CA2015227C (it)
DE (1) DE4013214C2 (it)
ES (1) ES2021524A6 (it)
FR (1) FR2646300B1 (it)
GB (1) GB2232546B (it)
IT (1) IT1239726B (it)
SE (1) SE512480C2 (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04138710A (ja) * 1990-09-28 1992-05-13 Nec Corp 弾性表面波フィルタ
EP0508325A1 (de) * 1991-04-11 1992-10-14 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Reflektive Verzögerungsleitung in Oberflächenwellentechnik
DE4227340C2 (de) * 1991-08-22 1995-09-21 Hitachi Ltd Oberflächenwellen-Bauelement
US5666091A (en) * 1995-03-20 1997-09-09 Hitachi Media Electronics Co., Ltd. Structure of surface acoustic wave filter
GB2312110B (en) * 1996-03-29 2000-07-05 Advanced Saw Prod Sa Acoustic wave filter
JPH10190394A (ja) * 1996-12-25 1998-07-21 Murata Mfg Co Ltd 弾性表面波共振子フィルタ
CN1229916C (zh) * 2001-04-09 2005-11-30 株式会社村田制作所 弹性表面波装置、通信装置
KR100616655B1 (ko) * 2005-01-03 2006-08-28 삼성전기주식회사 안티 퓨즈를 이용한 표면탄성파 소자의 ｉｄｔ 전극패턴의 형성 방법 및 이에 의해 제조된 표면탄성파 소자
KR100698288B1 (ko) * 2005-02-04 2007-03-22 삼성전자주식회사 프로그래밍 가능한 표면탄성파 필터
RU2610415C1 (ru) * 2015-10-29 2017-02-10 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" Многоканальная отражательная линия задержки

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946342A (en) * 1973-08-10 1976-03-23 Texas Instruments Incorporated Weighting surface wave filters by withdrawing electrodes
JPS553281A (en) * 1978-06-22 1980-01-11 Matsushita Electric Ind Co Ltd Elastic surface wave filter
JPS5573123A (en) * 1978-11-27 1980-06-02 Toshiba Corp Elastic surface wave filter
US4321567A (en) * 1980-03-24 1982-03-23 Raytheon Company Combining series sections weighting with withdrawal weighting in SAW transducers
JPS56149818A (en) * 1980-04-23 1981-11-19 Hitachi Ltd Elastic surface wave device
DE3267639D1 (en) * 1981-02-04 1986-01-09 Matsushita Electric Ind Co Ltd Surface acoustic wave device
JPS58154917A (ja) * 1982-03-10 1983-09-14 Hitachi Ltd 弾性表面波バンドパスフイルタ
JPS595729A (ja) * 1982-07-01 1984-01-12 Nec Corp 弾性表面波フイルタ
JPS5933920A (ja) * 1982-08-20 1984-02-24 Hitachi Ltd 弾性表面波バンドパス・フイルタ
US4491758A (en) * 1983-05-03 1985-01-01 R F Monolithics, Inc. Surface wave device with oversampled withdrawal weighting
JPH0815248B2 (ja) * 1983-05-30 1996-02-14 松下電器産業株式会社 弾性表面波装置
US4600852A (en) * 1984-10-30 1986-07-15 Massachusetts Institute Of Technology Wide bandwidth withdrawal weighted surface acoustic wave filters
JPS61252704A (ja) * 1985-05-01 1986-11-10 Hitachi Ltd 弾性表面波フイルタ
GB2193060B (en) * 1986-07-16 1991-04-03 Japan Radio Co Ltd Surface elastic wave filter
JPS63253712A (ja) * 1987-04-10 1988-10-20 Hitachi Ltd 弾性表面波バンドパスフイルタ
JPS63304707A (ja) * 1987-06-05 1988-12-13 Japan Radio Co Ltd 弾性表面波フィルタ

Also Published As

Publication number Publication date
GB9009044D0 (en) 1990-06-20
KR950000082B1 (ko) 1995-01-09
SE512480C2 (sv) 2000-03-20
CA2015227C (en) 1994-01-25
GB2232546A (en) 1990-12-12
DE4013214A1 (de) 1990-10-31
GB2232546B (en) 1993-07-07
IT1239726B (it) 1993-11-15
KR900017280A (ko) 1990-11-15
SE9001471D0 (sv) 1990-04-24
JP2601543B2 (ja) 1997-04-16
ES2021524A6 (es) 1991-11-01
CA2015227A1 (en) 1990-10-25
SE9001471L (sv) 1990-10-26
US5175519A (en) 1992-12-29
FR2646300B1 (fr) 1995-03-17
FR2646300A1 (fr) 1990-10-26
JPH02284511A (ja) 1990-11-21
DE4013214C2 (de) 1996-01-18
IT9020124A1 (it) 1991-10-24

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970429