FR967973A - Directive air system - Google Patents

Directive air system

Info

Publication number
FR967973A
FR967973A FR967973DA FR967973A FR 967973 A FR967973 A FR 967973A FR 967973D A FR967973D A FR 967973DA FR 967973 A FR967973 A FR 967973A
Authority
FR
France
Prior art keywords
air system
directive air
directive
air
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
Pierre Bodez
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.)
Sadir Carpentier SA
Original Assignee
Sadir Carpentier SA
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 Sadir Carpentier SA filed Critical Sadir Carpentier SA
Application granted granted Critical
Publication of FR967973A publication Critical patent/FR967973A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
    • H01Q21/14—Adcock antennas
    • 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
    • G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/005—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using discontinuously variable devices, e.g. switch-operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
FR967973D 1948-06-14 1948-06-14 Directive air system Expired FR967973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR967973T 1948-06-14

Publications (1)

Publication Number Publication Date
FR967973A true FR967973A (en) 1950-11-16

Family

ID=9501010

Family Applications (3)

Application Number Title Priority Date Filing Date
FR967973D Expired FR967973A (en) 1948-06-14 1948-06-14 Directive air system
FR967972D Expired FR967972A (en) 1948-06-14 1948-06-14 Sound expander
FR967971D Expired FR967971A (en) 1948-06-14 1948-06-14 Improvements to the direction-finding system

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR967972D Expired FR967972A (en) 1948-06-14 1948-06-14 Sound expander
FR967971D Expired FR967971A (en) 1948-06-14 1948-06-14 Improvements to the direction-finding system

Country Status (2)

Country Link
FR (3) FR967973A (en)
IT (2) IT454410A (en)

Also Published As

Publication number Publication date
IT454184A (en)
IT454410A (en)
FR967972A (en) 1950-11-16
FR967971A (en) 1950-11-16

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