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

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02Direction-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
    • G01S3/04Details
    • G01S3/06Means 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
    • G01S3/065Means 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 (nl)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL21421C true NL21421C (nl)

Family

ID=19782595

Family Applications (1)

Application Number Title Priority Date Filing Date
NL21421D NL21421C (nl) 1927-03-21

Country Status (3)

Country Link
DE (1) DE491604C (nl)
GB (1) GB287491A (nl)
NL (1) NL21421C (nl)

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

Similar Documents

Publication Publication Date Title
FR34966E (nl)
FR34837E (nl)
FR34849E (nl)
FR34893E (nl)
FR615413A (nl)
FR32427E (nl)
FR34756E (nl)
FR34782E (nl)
FR34787E (nl)
FR34802E (nl)
FR34887E (nl)
FR34769E (nl)
BE344470A (nl)
BE348332A (nl)
BE347905A (nl)
BE348067A (nl)
BE348261A (nl)
BE351733A (nl)
BE347291A (nl)
BE345547A (nl)
BE351027A (nl)
BE344886A (nl)
BE288267A (nl)
NL21581C (nl)
NL24127C (nl)