FR931309A - Improvements to directed antenna systems - Google Patents

Improvements to directed antenna systems

Info

Publication number
FR931309A
FR931309A FR931309DA FR931309A FR 931309 A FR931309 A FR 931309A FR 931309D A FR931309D A FR 931309DA FR 931309 A FR931309 A FR 931309A
Authority
FR
France
Prior art keywords
antenna systems
directed antenna
directed
systems
antenna
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
Application number
Other languages
French (fr)
Inventor
Edward Hill Ullrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR931309A publication Critical patent/FR931309A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
FR931309D 1940-09-25 1946-07-25 Improvements to directed antenna systems Expired FR931309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1455740A GB577853A (en) 1940-09-25 1940-09-25 Means for overcoming the effects of earth reflections in directional antenna systems

Publications (1)

Publication Number Publication Date
FR931309A true FR931309A (en) 1948-02-19

Family

ID=10043382

Family Applications (1)

Application Number Title Priority Date Filing Date
FR931309D Expired FR931309A (en) 1940-09-25 1946-07-25 Improvements to directed antenna systems

Country Status (4)

Country Link
BE (1) BE471723A (en)
ES (1) ES176095A1 (en)
FR (1) FR931309A (en)
GB (1) GB577853A (en)

Also Published As

Publication number Publication date
ES176095A1 (en) 1947-01-16
BE471723A (en)
GB577853A (en) 1946-06-04

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