FR2254152A1 - Wideband signal delay line - has delay medium in which spherical wave propagates, and has at least one pair of transducers - Google Patents
Wideband signal delay line - has delay medium in which spherical wave propagates, and has at least one pair of transducersInfo
- Publication number
- FR2254152A1 FR2254152A1 FR7343712A FR7343712A FR2254152A1 FR 2254152 A1 FR2254152 A1 FR 2254152A1 FR 7343712 A FR7343712 A FR 7343712A FR 7343712 A FR7343712 A FR 7343712A FR 2254152 A1 FR2254152 A1 FR 2254152A1
- Authority
- FR
- France
- Prior art keywords
- transducers
- transducer
- pair
- wideband signal
- spherical wave
- Prior art date
- 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.)
- Granted
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
- H03H9/30—Time-delay networks
- H03H9/36—Time-delay networks with non-adjustable delay time
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7343712A FR2254152A1 (en) | 1973-12-07 | 1973-12-07 | Wideband signal delay line - has delay medium in which spherical wave propagates, and has at least one pair of transducers |
DE19742457840 DE2457840C3 (de) | 1973-12-07 | 1974-12-06 | Breitband-Verzögerungsleitung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7343712A FR2254152A1 (en) | 1973-12-07 | 1973-12-07 | Wideband signal delay line - has delay medium in which spherical wave propagates, and has at least one pair of transducers |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2254152A1 true FR2254152A1 (en) | 1975-07-04 |
FR2254152B1 FR2254152B1 (fr) | 1976-11-19 |
Family
ID=9128874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7343712A Granted FR2254152A1 (en) | 1973-12-07 | 1973-12-07 | Wideband signal delay line - has delay medium in which spherical wave propagates, and has at least one pair of transducers |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2457840C3 (fr) |
FR (1) | FR2254152A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0351267A1 (fr) * | 1988-07-12 | 1990-01-17 | Thomson-Csf | Dispositif et procédé d'identification passif interrogeable à distance |
-
1973
- 1973-12-07 FR FR7343712A patent/FR2254152A1/fr active Granted
-
1974
- 1974-12-06 DE DE19742457840 patent/DE2457840C3/de not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0351267A1 (fr) * | 1988-07-12 | 1990-01-17 | Thomson-Csf | Dispositif et procédé d'identification passif interrogeable à distance |
WO1990000744A1 (fr) * | 1988-07-12 | 1990-01-25 | Thomson-Csf | Dispositif et procede d'identification passif interrogeable a distance |
Also Published As
Publication number | Publication date |
---|---|
DE2457840A1 (de) | 1975-06-26 |
DE2457840C3 (de) | 1978-05-03 |
FR2254152B1 (fr) | 1976-11-19 |
DE2457840B2 (de) | 1977-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |