BE664764A - - Google Patents

Info

Publication number
BE664764A
BE664764A BE664764DA BE664764A BE 664764 A BE664764 A BE 664764A BE 664764D A BE664764D A BE 664764DA BE 664764 A BE664764 A BE 664764A
Authority
BE
Belgium
Application number
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.)
Filing date
Publication date
Application filed filed Critical
Publication of BE664764A publication Critical patent/BE664764A/xx

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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
BE664764D 1964-06-11 1965-06-01 BE664764A (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US374544A US3387233A (en) 1964-06-11 1964-06-11 Signal dispersion system
US374542A US3387235A (en) 1964-06-11 1964-06-11 Signal dispersion system

Publications (1)

Publication Number Publication Date
BE664764A true BE664764A (de) 1965-10-01

Family

ID=27006654

Family Applications (1)

Application Number Title Priority Date Filing Date
BE664764D BE664764A (de) 1964-06-11 1965-06-01

Country Status (7)

Country Link
US (2) US3387235A (de)
BE (1) BE664764A (de)
DE (1) DE1278624B (de)
FR (1) FR1456515A (de)
GB (2) GB1102034A (de)
NL (1) NL6506039A (de)
SE (1) SE313593B (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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 (de) * 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
NL6506039A (de) 1965-12-13
US3387233A (en) 1968-06-04
GB1102034A (en) 1968-02-07
SE313593B (de) 1969-08-18
US3387235A (en) 1968-06-04
GB1102039A (en) 1968-02-07
DE1278624B (de) 1968-09-26
FR1456515A (fr) 1966-10-28

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