GB287491A - Aerial circuit for the reception or direction-finding of electro-magnetic waves - Google Patents

Aerial circuit for the reception or direction-finding of electro-magnetic waves

Info

Publication number
GB287491A
GB287491A GB8598/28A GB859828A GB287491A GB 287491 A GB287491 A GB 287491A GB 8598/28 A GB8598/28 A GB 8598/28A GB 859828 A GB859828 A GB 859828A GB 287491 A GB287491 A GB 287491A
Authority
GB
United Kingdom
Prior art keywords
frame
coil
aerial
hand
wound
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
GB8598/28A
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.)
NL TELEGRAAF MIJ RADIO HOLLAND
Original Assignee
NL TELEGRAAF MIJ RADIO HOLLAND
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 NL TELEGRAAF MIJ RADIO HOLLAND filed Critical NL TELEGRAAF MIJ RADIO HOLLAND
Publication of GB287491A publication Critical patent/GB287491A/en
Expired legal-status Critical Current

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)

Abstract

287,491. Nederlandsche Telegraaf Maatschappij Radio-Holland. March 21, 1927, [Convention date]. Directive signalling; frame aerials.-In order to eliminated the open-aerial effect the coupling- coil B, C, Fig. 3, of a frame aerial is wound in two halves on a single core, one left-hand and the other right-hand, but otherwise symmetrically arranged, as shown in Fig. 8, the centre point being earthed at A. The main windings of the frame aerial are also arranged in two symmetrical halves, oppositely wound on the separate supports shown in Fig. 5. The valve input coil DE may be closely wound around the coil BC. The rotating frame T may be combined with an arrangement 1, 2, 3, Fig. 6, for eliminating quadrantal error, as described in Specification 278,743, any undesirable effect on the tuning of the receiver due to the presence of the conductors 1, 2, 3 being compensated by a short-circuited coil 6, revolving with the frame T and variably coupled to an auxiliary fixed winding 7.
GB8598/28A 1927-03-21 1928-03-21 Aerial circuit for the reception or direction-finding of electro-magnetic waves Expired GB287491A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB287491A true GB287491A (en) 1928-09-27

Family

ID=19782595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8598/28A Expired GB287491A (en) 1927-03-21 1928-03-21 Aerial circuit for the reception or direction-finding of electro-magnetic waves

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285712A (en) * 1994-01-17 1995-07-19 Benjamin Edginton Magnetic loop antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285712A (en) * 1994-01-17 1995-07-19 Benjamin Edginton Magnetic loop antenna
GB2285712B (en) * 1994-01-17 1998-02-11 Benjamin Edginton Improvements relating to a magnetic loop antenna

Also Published As

Publication number Publication date
DE491604C (en) 1930-02-15
NL21421C (en)

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