NL21421C - - Google Patents

Info

Publication number
NL21421C
NL21421C NL21421DA NL21421C NL 21421 C NL21421 C NL 21421C NL 21421D A NL21421D A NL 21421DA NL 21421 C NL21421 C NL 21421C
Authority
NL
Netherlands
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 NL21421C publication Critical patent/NL21421C/xx

Links

Classifications

    • 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
    • G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
    • G01S3/065—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna by using non-directional aerial

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
NL21421D 1927-03-21 NL21421C (ja�@�@)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL287491X 1927-03-21

Publications (1)

Publication Number Publication Date
NL21421C true NL21421C (ja�@�@)

Family

ID=19782595

Family Applications (1)

Application Number Title Priority Date Filing Date
NL21421D NL21421C (ja�@�@) 1927-03-21

Country Status (3)

Country Link
DE (1) DE491604C (ja�@�@)
GB (1) GB287491A (ja�@�@)
NL (1) NL21421C (ja�@�@)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285712B (en) * 1994-01-17 1998-02-11 Benjamin Edginton Improvements relating to a magnetic loop antenna

Also Published As

Publication number Publication date
GB287491A (en) 1928-09-27
DE491604C (de) 1930-02-15

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