BE469845A - - Google Patents

Info

Publication number
BE469845A
BE469845A BE469845DA BE469845A BE 469845 A BE469845 A BE 469845A BE 469845D A BE469845D A BE 469845DA BE 469845 A BE469845 A BE 469845A
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.)
Publication of BE469845A publication Critical patent/BE469845A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aerials With Secondary Devices (AREA)
BE469845D 1945-03-02 BE469845A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US580674A US2577804A (en) 1945-03-02 1945-03-02 Radio antenna

Publications (1)

Publication Number Publication Date
BE469845A true BE469845A (fr)

Family

ID=41578941

Family Applications (1)

Application Number Title Priority Date Filing Date
BE469845D BE469845A (fr) 1945-03-02

Country Status (5)

Country Link
US (1) US2577804A (fr)
BE (1) BE469845A (fr)
ES (1) ES173332A1 (fr)
FR (1) FR923035A (fr)
GB (1) GB619959A (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1781046A (en) * 1924-07-11 1930-11-11 Bethenod Joseph Antenna
US1746436A (en) * 1924-07-25 1930-02-11 Drahtlose Telegraphie Gmbh Antenna
US1764441A (en) * 1924-08-04 1930-06-17 Hahnemann Walter Arrangement for directional transmission and reception by means of electric waves
DE475293C (de) * 1925-12-29 1929-04-25 Hidetsugu Yagi Einrichtung zum Richtsenden oder Richtempfangen
US1830176A (en) * 1926-12-08 1931-11-03 Drahtlose Telegraphie Gmbh Short wave aerial
US1805591A (en) * 1926-12-18 1931-05-19 American Telephone & Telegraph Signaling system
GB402834A (en) * 1931-07-29 1933-12-14 Fed Telegraph Co Improvements in or relating to directional radio beam systems
US2081162A (en) * 1935-04-30 1937-05-25 Mackay Radio & Telegraph Co Antenna
US2292342A (en) * 1940-02-28 1942-08-04 Bell Telephone Labor Inc Reflecting system for antennas

Also Published As

Publication number Publication date
GB619959A (en) 1949-03-17
FR923035A (fr) 1947-06-25
ES173332A1 (es) 1946-06-01
US2577804A (en) 1951-12-11

Similar Documents

Publication Publication Date Title
BE465306A (fr)
AT190006B (fr)
BE468835A (fr)
BE465860A (fr)
BE469155A (fr)
BE471221A (fr)
BE458693A (fr)
BE460560A (fr)
BE462136A (fr)
BE462813A (fr)
BE462915A (fr)
BE462945A (fr)
BE469303A (fr)
BE463304A (fr)
BE463403A (fr)
BE463711A (fr)
BE463863A (fr)
BE464383A (fr)
BE474674A (fr)
BE464548A (fr)
BE465023A (fr)
BE469846A (fr)
BE470018A (fr)
BE475401A (fr)
BE482590A (fr)