ES429628A1 - Un dispositivo de onda superficial acustica. - Google Patents

Un dispositivo de onda superficial acustica.

Info

Publication number: ES429628A1
Authority: ES; Spain
Prior art keywords: wave devices; acoustic surface; passbands; transducer; wave
Prior art date: 1973-08-31
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

ES429628A

Other languages

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.)

1973-08-31

Filing date

1974-08-29

Publication date

1976-10-16

1974-08-29 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1976-10-16 Publication of ES429628A1 publication Critical patent/ES429628A1/es

Status 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
- H03H9/02—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
- H03H9/14544—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)

ES429628A 1973-08-31 1974-08-29 Un dispositivo de onda superficial acustica. Expired ES429628A1 (es)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB4102473A GB1431112A (en)	1973-08-31	1973-08-31	Acoustic surface-wave devices

Publications (1)

Publication Number	Publication Date
ES429628A1 true ES429628A1 (es)	1976-10-16

Family

ID=10417766

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES429628A Expired ES429628A1 (es)	1973-08-31	1974-08-29	Un dispositivo de onda superficial acustica.

Country Status (11)

Country	Link
US (1)	US3968461A (es)
JP (1)	JPS5622163B2 (es)
AU (1)	AU525506B2 (es)
BE (1)	BE819353A (es)
CA (1)	CA1003096A (es)
DE (1)	DE2439530C2 (es)
ES (1)	ES429628A1 (es)
FR (1)	FR2242813B1 (es)
GB (1)	GB1431112A (es)
IT (1)	IT1020680B (es)
SE (1)	SE411282B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4206380A (en) *	1978-12-22	1980-06-03	Hitachi, Ltd.	Piezoelectric surface acoustic wave device with suppression of reflected signals
JPS5656024A (en) *	1979-10-11	1981-05-16	Murata Mfg Co Ltd	Elastic surface wave device
DE3021013A1 (de) *	1980-06-03	1981-12-17	Franz Prof. Dr.-Ing. Wien Seifert	Interdigitalwandler fuer oberflaechenwellen-(saw)einrichtung und volumenwellen-(ssb)einrichtung
JPS57185716A (en) *	1981-05-11	1982-11-16	Nec Corp	Surface acoustic wave reed screen shaped converter
US4604595A (en) *	1982-06-16	1986-08-05	Murata Manufacturing Co., Ltd.	Surface acoustic wave device having interdigitated comb electrodes weighted for odd/even response
JP2870751B2 (ja) *	1987-02-13	1999-03-17	株式会社東芝	弾性表面波フィルタ
US5122767A (en) *	1991-01-10	1992-06-16	Northern Telecom Limited	Saw device tapped delay lines

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2167405B1 (es) *	1972-01-14	1976-06-11	Thomson Csf
US3727155A (en) *	1972-03-20	1973-04-10	Zenith Radio Corp	Acoustic surface wave filter
US3723919A (en) *	1972-03-20	1973-03-27	Zenith Radio Corp	Acoustic surface wave filters with reflection suppression
US3855556A (en) *	1973-04-02	1974-12-17	Texas Instruments Inc	Selectable frequency bandpass filter
US3803520A (en) *	1973-04-26	1974-04-09	Hughes Aircraft Co	Acoustic surface wave device with improved transducer
US3886504A (en) *	1974-05-20	1975-05-27	Texas Instruments Inc	Acoustic surface wave resonator devices
GB1529941A (en) *	1975-01-15	1978-10-25	Mullard Ltd	Electrical filters including coupled resonators

1973
- 1973-08-31 GB GB4102473A patent/GB1431112A/en not_active Expired
1974
- 1974-08-17 DE DE2439530A patent/DE2439530C2/de not_active Expired
- 1974-08-26 AU AU72679/74A patent/AU525506B2/en not_active Expired
- 1974-08-28 JP JP9803074A patent/JPS5622163B2/ja not_active Expired
- 1974-08-28 SE SE7410860A patent/SE411282B/xx unknown
- 1974-08-28 IT IT69633/74A patent/IT1020680B/it active
- 1974-08-29 FR FR7429517A patent/FR2242813B1/fr not_active Expired
- 1974-08-29 ES ES429628A patent/ES429628A1/es not_active Expired
- 1974-08-29 BE BE148042A patent/BE819353A/xx unknown
- 1974-08-30 CA CA208,187A patent/CA1003096A/en not_active Expired
- 1974-09-03 US US05/502,506 patent/US3968461A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
AU525506B2 (en)	1982-11-11
IT1020680B (it)	1977-12-30
DE2439530A1 (de)	1975-03-06
SE411282B (sv)	1979-12-10
AU7267974A (en)	1976-02-26
CA1003096A (en)	1977-01-04
FR2242813A1 (es)	1975-03-28
JPS5622163B2 (es)	1981-05-23
JPS5055246A (es)	1975-05-15
BE819353A (fr)	1975-02-28
DE2439530C2 (de)	1985-02-28
GB1431112A (en)	1976-04-07
FR2242813B1 (es)	1978-09-15
SE7410860L (sv)	1975-03-03
US3968461A (en)	1976-07-06

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