IT7925462A0 - Dispositivo ad onde superficiali con migliorata soppressione dei segnali spuri. - Google Patents

Dispositivo ad onde superficiali con migliorata soppressione dei segnali spuri.

Info

Publication number: IT7925462A0
Authority: IT; Italy
Prior art keywords: spure; signals; wave device; improved suppression; superficial
Prior art date: 1978-09-13

Application number

IT7925462A

Other languages

English (en)

Other versions

IT1122958B (it

Inventor

Mollmer Frank

Original Assignee

Siemens Ag

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.)

1978-09-13

Filing date

1979-09-04

Publication date

1979-09-04

1979-09-04 Application filed by Siemens Ag filed Critical Siemens Ag

1979-09-04 Publication of IT7925462A0 publication Critical patent/IT7925462A0/it

1986-04-30 Application granted granted Critical

1986-04-30 Publication of IT1122958B publication Critical patent/IT1122958B/it

Links

230000001629 suppression Effects 0.000 title 1

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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling 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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
- 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
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
- H03H9/0285—Means for compensation or elimination of undesirable effects of reflections of triple transit echo
- 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
- H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
- 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
- H03H9/14573—Arrow type transducers

Landscapes

Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

IT25462/79A 1978-09-13 1979-09-04 Dispositivo ad onde superficiali con migliorata soppressione dei segnali spuri IT1122958B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2839851A DE2839851C2 (de)	1978-09-13	1978-09-13	Oberflächenwellenanordnung mit verbesserter Störsignalunterdrückung

Publications (2)

Publication Number	Publication Date
IT7925462A0 true IT7925462A0 (it)	1979-09-04
IT1122958B IT1122958B (it)	1986-04-30

Family

ID=6049354

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT25462/79A IT1122958B (it)	1978-09-13	1979-09-04	Dispositivo ad onde superficiali con migliorata soppressione dei segnali spuri

Country Status (7)

Country	Link
US (1)	US4263569A (it)
JP (1)	JPS5541097A (it)
BE (1)	BE878757A (it)
DE (1)	DE2839851C2 (it)
FR (1)	FR2436529A1 (it)
GB (1)	GB2030412B (it)
IT (1)	IT1122958B (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5693414A (en) *	1979-12-27	1981-07-29	Fujitsu Ltd	Elastic surface wave element
GB2090093A (en) *	1980-12-19	1982-06-30	Philips Electronic Associated	Acoustic wave devices
US4393358A (en) *	1981-11-18	1983-07-12	Zenith Radio Corporation	Surface wave acoustic device with compensation for diffraction effects
DE3208252A1 (de) *	1982-03-08	1983-09-15	Siemens AG, 1000 Berlin und 8000 München	Interdigitalwandler mit unterdrueckung reflektierter stoersignale
JPS63156412A (ja) *	1986-12-19	1988-06-29	Sanyo Electric Co Ltd	表面波フイルタ装置
DE3731309A1 (de) *	1987-09-17	1989-03-30	Siemens Ag	Oberflaechenwellenanordnung mit konversionsstruktur zur vermeidung unerwuenschter reflektierter wellen
JPH01134924U (it) *	1988-03-09	1989-09-14
DE4010310A1 (de) *	1990-03-30	1991-10-02	Siemens Ag	Oberflaechenwellenwandler, insbesondere in splitfinger-ausfuehrung, mit unterdrueckung von reflexionen endstaendiger wandlerfinger
DE4212517C2 (de) *	1992-04-14	1995-02-23	Siemens Ag	Oberflächenwellenanordnung mit mindestens zwei in Richtung der Hauptwellenausbreitung benachbarten Oberflächenwellen-Strukturen
JPH07212177A (ja) *	1994-01-14	1995-08-11	Murata Mfg Co Ltd	表面波フィルタ
JP3934544B2 (ja) *	2002-04-11	2007-06-20	富士通株式会社	弾性波観測装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3573673A (en) *	1969-01-08	1971-04-06	Zenith Radio Corp	Acoustic surface wave filters
US3680007A (en) *	1970-09-30	1972-07-25	Ibm	Surface wave transducer for digital signals
US3872410A (en) *	1972-12-04	1975-03-18	Gte Laboratories Inc	Surface wave filter for tv if stage
AT341578B (de) *	1975-12-19	1978-02-10	Hans Dr Kuzmany	Elektroakustischer wandler zur elektrischen anregung einer akustischen oberflachenwelle bzw. zur akustischen anregung einer elektrischen welle durch den piezoelektrischen effekt
DE2618144C3 (de) *	1976-04-26	1980-11-06	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Wandlerelektroden für Filter oder Verzögerungsleitungen nach dem Oberflächenwellenprinzip
JPS54844A (en) *	1977-06-03	1979-01-06	Matsushita Electric Ind Co Ltd	Elastic surface wave filter
SU726648A1 (ru) *	1977-07-22	1980-04-05	Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср	Устройство на поверхностных акустических волнах

1978
- 1978-09-13 DE DE2839851A patent/DE2839851C2/de not_active Expired
1979
- 1979-08-15 US US06/066,665 patent/US4263569A/en not_active Expired - Lifetime
- 1979-09-03 FR FR7922007A patent/FR2436529A1/fr not_active Withdrawn
- 1979-09-04 IT IT25462/79A patent/IT1122958B/it active
- 1979-09-11 GB GB7931459A patent/GB2030412B/en not_active Expired
- 1979-09-12 BE BE0/197126A patent/BE878757A/xx unknown
- 1979-09-13 JP JP11781779A patent/JPS5541097A/ja active Pending

Also Published As

Publication number	Publication date
IT1122958B (it)	1986-04-30
DE2839851C2 (de)	1980-09-25
US4263569A (en)	1981-04-21
BE878757A (fr)	1979-12-31
FR2436529A1 (fr)	1980-04-11
JPS5541097A (en)	1980-03-22
GB2030412A (en)	1980-04-02
GB2030412B (en)	1983-03-02
DE2839851B1 (de)	1979-12-06

Publication	Publication Date	Title
JPS55102918A (en)	1980-08-06	Sound wave device
AT376718B (de)	1984-12-27	Zellstoffwaescher
NL7903908A (nl)	1979-11-26	Elektro-akoustische transducent.
IT1165039B (it)	1987-04-22	Polisaccaride e procedimento per produrlo
NL7711720A (nl)	1978-05-03	Verestering van hydrocarbyl-gesubstitueerde barnsteenzuuranhydriden.
IT7925462A0 (it)	1979-09-04	Dispositivo ad onde superficiali con migliorata soppressione dei segnali spuri.
JPS5585122A (en)	1980-06-26	Surface sound wave signal processor
SE7714181L (sv)	1978-06-18	Detektering av telefonsignaler
IT1056887B (it)	1982-02-20	Trasduttore di onde di superficie elstiche
BR7907309A (pt)	1980-07-22	Arranjo de atenuacao
BR7902346A (pt)	1979-10-23	Transdutor
IT1123782B (it)	1986-04-30	Parete-schermo di isolamento acustico
BR7905977A (pt)	1980-07-08	Conjunto de transdutor de pressao
BE878310A (nl)	1979-12-17	Sonar
AT367514B (de)	1982-07-12	Isolierscheibe
FR2416493B1 (fr)	1985-09-20	Element opto-acoustique
BR7901040A (pt)	1979-10-02	Transdutor de corrente
NL7810674A (nl)	1979-06-25	Akoestische oppervlakgolfinrichting.
NO145554C (no)	1982-04-14	Elektroakustisk transduser
AR219824A1 (es)	1980-09-15	Dispositivo de tratamiento de sefiales vocales
ATA232478A (de)	1979-09-15	Wellensicherung
IT7830696A0 (it)	1978-12-11	Procedimento per ottenere dispositivi ad onde acustiche superficiali per altissime frequenze.
IT7823436V0 (it)	1978-11-30	Struttura di convogliatore di onde sonore.
ATA767378A (de)	1980-09-15	Signalvorrichtung
IT1112590B (it)	1986-01-20	Procedimento migliorato di alchilazione catalitica