FR959920A - - Google Patents

Info

Publication number
FR959920A
FR959920A FR959920DA FR959920A FR 959920 A FR959920 A FR 959920A FR 959920D A FR959920D A FR 959920DA FR 959920 A FR959920 A FR 959920A
Authority
FR
France
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
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 date
Application granted granted Critical
Publication of FR959920A publication Critical patent/FR959920A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • 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
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04—Details
    • G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
FR959920D 1946-02-19 Expired FR959920A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2478463X 1946-02-19

Publications (1)

Publication Number Publication Date
FR959920A true FR959920A (fr) 1950-04-07

Family

ID=19874347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR959920D Expired FR959920A (fr) 1946-02-19

Country Status (3)

Country Link
US (1) US2478463A (fr)
BE (1) BE473871A (fr)
FR (1) FR959920A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156917A (en) * 1960-02-22 1964-11-10 Marelli Lenkurt S P A Antenna reflector and feed with absorbers to reduce back radiation to feed
US3789404A (en) * 1968-10-16 1974-01-29 Univ Ohio State Res Found Periodic surface for large scan angles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE706417C (de) * 1936-08-25 1941-05-26 Lorenz Akt Ges C Anordnung zur Vermeidung von Horizontalpolarisation
US2293839A (en) * 1940-06-25 1942-08-25 Rca Corp Centimeter wave absorber
FR962499A (fr) * 1942-06-02 1950-06-10
US2433369A (en) * 1942-07-24 1947-12-30 Standard Telephones Cables Ltd Antenna system and method of using same
US2436578A (en) * 1944-03-04 1948-02-24 Ruskin Means for altering the reflection of radar waves

Also Published As

Publication number Publication date
US2478463A (en) 1949-08-09
BE473871A (fr)

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