FR1456515A - Système de dispersion de signaux - Google Patents
Système de dispersion de signauxInfo
- Publication number
- FR1456515A FR1456515A FR20575A FR20575A FR1456515A FR 1456515 A FR1456515 A FR 1456515A FR 20575 A FR20575 A FR 20575A FR 20575 A FR20575 A FR 20575A FR 1456515 A FR1456515 A FR 1456515A
- Authority
- FR
- France
- Prior art keywords
- signal
- dispersal system
- dispersal
- signal dispersal
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q3/443—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element varying the phase velocity along a leaky transmission line
-
- 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
- H03H9/40—Frequency dependent delay lines, e.g. dispersive delay lines
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US374542A US3387235A (en) | 1964-06-11 | 1964-06-11 | Signal dispersion system |
US374544A US3387233A (en) | 1964-06-11 | 1964-06-11 | Signal dispersion system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1456515A true FR1456515A (fr) | 1966-10-28 |
Family
ID=27006654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR20575A Expired FR1456515A (fr) | 1964-06-11 | 1965-06-11 | Système de dispersion de signaux |
Country Status (7)
Country | Link |
---|---|
US (2) | US3387233A (fr) |
BE (1) | BE664764A (fr) |
DE (1) | DE1278624B (fr) |
FR (1) | FR1456515A (fr) |
GB (2) | GB1102034A (fr) |
NL (1) | NL6506039A (fr) |
SE (1) | SE313593B (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462714A (en) * | 1966-10-03 | 1969-08-19 | Zenith Radio Corp | Acoustic signal translating device having a propagating medium composed of a plurality of effectively distinct signal translating paths of mutually different effective lengths |
US3573669A (en) * | 1968-09-03 | 1971-04-06 | Bell Telephone Labor Inc | Dispersive delay cell using anisotropic medium |
US3593214A (en) * | 1969-04-29 | 1971-07-13 | Westinghouse Electric Corp | High impedance transducer |
FR2068014A5 (fr) * | 1969-11-25 | 1971-08-20 | Thomson Csf | |
US3696313A (en) * | 1970-07-29 | 1972-10-03 | Zenith Radio Corp | Arrangement for converting between acoustic compressional waves and surface waves |
DE2115412A1 (de) * | 1971-03-30 | 1972-10-12 | Siemens Ag | Piezoelektrisches Filter nach dem Oberfl ächenwellenprinzip |
US3961289A (en) * | 1972-03-15 | 1976-06-01 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic delay material |
GB1474180A (en) * | 1973-10-12 | 1977-05-18 | Mullard Ltd | Acoustic surface wave devices |
US4101852A (en) * | 1976-09-21 | 1978-07-18 | Northwestern University | Microacoustic shear bulk wave device |
US4259649A (en) * | 1979-07-26 | 1981-03-31 | Westinghouse Electric Corp. | Electroacoustic delay line apparatus |
US4467295A (en) * | 1981-11-25 | 1984-08-21 | Showa Electric Wire & Cable Co., Ltd. | Solid ultrasonic delay line |
US4692722A (en) * | 1984-10-12 | 1987-09-08 | Loral Corporation | Compact frequency dispersive bulk acoustic wave channelizer |
US5371717A (en) * | 1993-06-15 | 1994-12-06 | Hewlett-Packard Company | Microgrooves for apodization and focussing of wideband clinical ultrasonic transducers |
US5423319A (en) * | 1994-06-15 | 1995-06-13 | Hewlett-Packard Company | Integrated impedance matching layer to acoustic boundary problems for clinical ultrasonic transducers |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2308360A (en) * | 1939-11-15 | 1943-01-12 | Bell Telephone Labor Inc | Light modulating apparatus and method |
US2408436A (en) * | 1942-10-24 | 1946-10-01 | Bell Telephone Labor Inc | Multiplex compressional wave system |
US2455399A (en) * | 1944-12-16 | 1948-12-07 | Lawrence G Botts | Paper clip |
US2416338A (en) * | 1945-04-11 | 1947-02-25 | Bell Telephone Labor Inc | Frequency selective system |
US2703867A (en) * | 1946-05-06 | 1955-03-08 | David L Arenberg | Delay line |
US2643286A (en) * | 1950-06-21 | 1953-06-23 | Hurvitz Hyman | Spectrum analyzer for compressional waves |
US2779191A (en) * | 1950-10-28 | 1957-01-29 | Bell Telephone Labor Inc | Frequency discriminator employing multiply resonant piezoelectric vibrator |
US2839731A (en) * | 1953-01-14 | 1958-06-17 | Bell Telephone Labor Inc | Multi-facet ultrasonic delay line |
US3070761A (en) * | 1953-05-07 | 1962-12-25 | Smith & Sons Ltd S | Ultrasonic delay lines |
US2965851A (en) * | 1957-12-26 | 1960-12-20 | Bell Telephone Labor Inc | Tapped ultrasonic delay line |
US3148343A (en) * | 1961-05-31 | 1964-09-08 | Lab For Electronics Inc | Variable ultrasonic delay line |
GB946708A (en) * | 1961-06-28 | 1964-01-15 | Cossor Ltd A C | Variable delay ultrasonic delay lines |
US3146412A (en) * | 1961-12-20 | 1964-08-25 | Lab For Electronics Inc | Variable ultrasonic delay line |
GB988102A (en) * | 1962-08-03 | 1965-04-07 | Marconi Co Ltd | Improvements in or relating to wave-energy delay cells |
US3289114A (en) * | 1963-12-24 | 1966-11-29 | Bell Telephone Labor Inc | Tapped ultrasonic delay line and uses therefor |
FR657592A (fr) * | 1963-12-24 | 1929-06-06 | Perfectionnements aux conduits de fumée |
-
1964
- 1964-06-11 US US374544A patent/US3387233A/en not_active Expired - Lifetime
- 1964-06-11 US US374542A patent/US3387235A/en not_active Expired - Lifetime
-
1965
- 1965-05-08 DE DEW39111A patent/DE1278624B/de active Pending
- 1965-05-12 NL NL6506039A patent/NL6506039A/xx unknown
- 1965-06-01 BE BE664764D patent/BE664764A/xx unknown
- 1965-06-10 SE SE7646/65A patent/SE313593B/xx unknown
- 1965-06-11 FR FR20575A patent/FR1456515A/fr not_active Expired
- 1965-06-11 GB GB24733/65A patent/GB1102034A/en not_active Expired
- 1965-08-16 GB GB34960/65A patent/GB1102039A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3387235A (en) | 1968-06-04 |
NL6506039A (fr) | 1965-12-13 |
GB1102034A (en) | 1968-02-07 |
SE313593B (fr) | 1969-08-18 |
DE1278624B (de) | 1968-09-26 |
US3387233A (en) | 1968-06-04 |
BE664764A (fr) | 1965-10-01 |
GB1102039A (en) | 1968-02-07 |
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