AT308202B - Piezoelectric filter based on the surface wave principle - Google Patents
Piezoelectric filter based on the surface wave principleInfo
- Publication number
- AT308202B AT308202B AT249771A AT249771A AT308202B AT 308202 B AT308202 B AT 308202B AT 249771 A AT249771 A AT 249771A AT 249771 A AT249771 A AT 249771A AT 308202 B AT308202 B AT 308202B
- Authority
- AT
- Austria
- Prior art keywords
- surface wave
- filter based
- piezoelectric filter
- wave principle
- principle
- Prior art date
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
- H03H9/6489—Compensation of undesirable effects
-
- 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
- H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
- H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
-
- 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
- H03H9/125—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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702021124 DE2021124C3 (en) | 1970-04-29 | Piezoelectric filter based on the surface wave principle |
Publications (1)
Publication Number | Publication Date |
---|---|
AT308202B true AT308202B (en) | 1973-06-25 |
Family
ID=5769849
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT249771A AT308202B (en) | 1970-04-29 | 1971-03-23 | Piezoelectric filter based on the surface wave principle |
AT348772A AT320744B (en) | 1970-04-29 | 1971-03-23 | Piezoelectric filter based on the surface wave principle |
AT348672A AT321367B (en) | 1970-04-29 | 1971-03-23 | Piezoelectric filter based on the surface wave principle |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT348772A AT320744B (en) | 1970-04-29 | 1971-03-23 | Piezoelectric filter based on the surface wave principle |
AT348672A AT321367B (en) | 1970-04-29 | 1971-03-23 | Piezoelectric filter based on the surface wave principle |
Country Status (4)
Country | Link |
---|---|
AT (3) | AT308202B (en) |
FR (1) | FR2090687A5 (en) |
GB (1) | GB1319946A (en) |
NL (1) | NL7105921A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2454223B1 (en) * | 1979-04-10 | 1986-11-28 | Telediffusion Fse | SURFACE ELASTIC WAVE DEVICE FOR INTERFERENCE OR INTERFERENCE CIRCUIT FOR TELEVISION BROADCASTS |
US4609891A (en) * | 1985-10-16 | 1986-09-02 | Sperry Corporation | Staggered SAW resonator for differential detection |
DE102015106191A1 (en) * | 2015-04-22 | 2016-10-27 | Epcos Ag | Electro-acoustic component with improved acoustics |
-
1971
- 1971-03-23 AT AT249771A patent/AT308202B/en not_active IP Right Cessation
- 1971-03-23 AT AT348772A patent/AT320744B/en not_active IP Right Cessation
- 1971-03-23 AT AT348672A patent/AT321367B/en not_active IP Right Cessation
- 1971-04-26 FR FR7114699A patent/FR2090687A5/fr not_active Expired
- 1971-04-28 GB GB1178171A patent/GB1319946A/en not_active Expired
- 1971-04-29 NL NL7105921A patent/NL7105921A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB1319946A (en) | 1973-06-13 |
AT320744B (en) | 1975-02-25 |
AT321367B (en) | 1975-03-25 |
DE2021124A1 (en) | 1971-11-11 |
FR2090687A5 (en) | 1972-01-14 |
NL7105921A (en) | 1971-11-02 |
DE2021124B2 (en) | 1975-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |