BE340848A - - Google Patents

Info

Publication number
BE340848A
BE340848A BE340848DA BE340848A BE 340848 A BE340848 A BE 340848A BE 340848D A BE340848D A BE 340848DA BE 340848 A BE340848 A BE 340848A
Authority
BE
Belgium
Prior art keywords
frame
doubt
coil
choke
vertical antenna
Prior art date
Application number
Other languages
English (en)
Publication of BE340848A publication Critical patent/BE340848A/fr

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
    • G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna
    • 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
    • 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
    • G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
    • G01S3/085—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems by using spaced loop aerial systems

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)
  • Mobile Radio Communication Systems (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Coils Or Transformers For Communication (AREA)

Description


  " PERFECTIONNEMENTS AUX RADIOGONIOMETRES "

  
Pour réaliser la levée du doute de 180[deg.] dans les indications fournies par les radiogoniomètres en emploie généralement la méthode consistant à superposer l'action d'une antenne verticale à celle du cadre suivant le brevet belge ? 212.083 du
19 novembre 1908.

  
Souvent, pour éviter l'installation d'une antenne verticale séparée, on se sert du cadre lui-même qu'on fait fonctionner ' 

  
à la fois comme cadre et comme antenne verticale. $ne'.méthode pour atteindre ce but a été décrite dans le brevet belge

  
 <EMI ID=1.1> 

  
 <EMI ID=2.1> 

  
La Fig. 1 montre schématiquement la méthode décrite dans ces brevets et additions. 

  
Le circuit bouchon A et la résistance R sont utilisés pour la levée du doute.

  
L'objet de cette addition est d'utiliser le cadre lui-même comme self ducircuit bouchon.

  
Dans ce but, on relie ( Fig. 2) en parallèle avec le cadre CC une bobine LL de valeur telle que le coefficient de self induction résultant permette l'accord du cadre sur la bande de longueurs d'onde de travail. Entre les points milieu du cadre et de cette bobine, on connecte le condensateur d'aûcord Cd pour la levée du doute. La self du circuit bouchon est alors constituéepar les deux moitiés du cadre CC et les deux moitiés de la bobine LL. Entre le point milieu de cette bobine et la terre on insère la résistance variable R qui sert à régler l'intensité du cou-  rant vertical.

Claims (1)

  1. RESUME.
    Variante de réalisation du montage pour le lever du doute, suivant laquelle le propre enroulement du cadre est utilisé pour constituer une partie de l'inductance du bouchon résonnant de mise à la terre.
BE340848D BE340848A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB111907D DE417134C (de) Radiowinkelmesser

Publications (1)

Publication Number Publication Date
BE340848A true BE340848A (fr)

Family

ID=6993062

Family Applications (1)

Application Number Title Priority Date Filing Date
BE340848D BE340848A (fr)

Country Status (6)

Country Link
US (1) US1723461A (fr)
BE (1) BE340848A (fr)
DE (1) DE417134C (fr)
FR (1) FR567587A (fr)
GB (1) GB217585A (fr)
NL (1) NL17451C (fr)

Also Published As

Publication number Publication date
GB217585A (en) 1925-01-08
NL17451C (fr)
FR567587A (fr) 1924-03-05
DE417134C (de) 1925-08-07
US1723461A (en) 1929-08-06

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