DE574373C - DF antenna system, consisting of a loop antenna and an auxiliary antenna - Google Patents

DF antenna system, consisting of a loop antenna and an auxiliary antenna

Info

Publication number
DE574373C
DE574373C DET40985D DET0040985D DE574373C DE 574373 C DE574373 C DE 574373C DE T40985 D DET40985 D DE T40985D DE T0040985 D DET0040985 D DE T0040985D DE 574373 C DE574373 C DE 574373C
Authority
DE
Germany
Prior art keywords
antenna
auxiliary
loop
emf
auxiliary antenna
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
DET40985D
Other languages
German (de)
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.)
Telefunken AG
Original Assignee
Telefunken AG
Publication date
Priority to DET40985D priority Critical patent/DE574373C/en
Application granted granted Critical
Publication of DE574373C publication Critical patent/DE574373C/en
Expired legal-status Critical Current

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
    • G01S3/12Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna

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)

Description

Peilantennensystem, bestehend aus einer Rahmenantenne und ,einer Hilfsantenne Um beim Peilen nicht nur die Richtung, sondern auch den Richtungssinn. des ankommenden Peilstrahles zu bestimmen, verwendet man, wie bekannt, außer der Rahmenantenne noch eine lineare Hilfsantenne. Diese Hilfsantenne kann man außerdem in einer anderen Schaltung beim Peilen zur Verschärfung vom Empfangsminimum benutzen. In diesem letzteren Fall genügt seine lineare Hilfsantenne, deren EMK bedeutend kleiner ist als die maximale EMK der Rahmenantenne., Wenn man :eine derart kleine Hilfsantenne auch zur Bestimmung des Richtungssinnes verwendet, so stößt man auf die Schwierigkeit, da.ß die von ihr gelieferte EMK im Vergleich mit der maximalen EMK der Rahmenantenne zu klein ist und daher zur Bildung einer erforderlichen kardioidalen Empfangscharakteristik nicht ausreicht. Man hat sich in: diesem Fall in der Weise geholfen, daß man die lineare Hilfsantenne über einen besorideren Verstärker an die Rahmenantenne ankoppelte. Das hat aber i. den Nachteil, daß das erforderliche Verhältnis der beiden EMK mit der Zeit sich ändert, so daß der Verstärker oft nachgestellt werden mußy und z. kommt es in der Regel vor, daß beim übergang vom eigentlichen Peilen (Einstellung des Rahmens auf Minimumempfang) zur Seitenbestimmung (Einstellung des Rahmens auf Maximumempfang) infolge der zu großen, bei der zweiten Schaltung auftretenden Empfangsenergie die Röhren gesättigt werden und das Audion: in seiner Tätigkeit gehemmt wird.DF antenna system, consisting of a loop antenna and an auxiliary antenna Not only about the direction, but also the sense of direction when taking bearings. of the incoming To determine the bearing beam, as is known, apart from the loop antenna, one still uses it a linear auxiliary antenna. This auxiliary antenna can also be used in another Use the circuit for direction finding to tighten the reception minimum. In this latter In this case, its linear auxiliary antenna is sufficient, the emf of which is significantly smaller than that maximum emf of the loop antenna., If you: such a small auxiliary antenna too used to determine the sense of direction, one encounters the difficulty da.ß the emf it delivers in comparison with the maximum emf of the loop antenna is too small and therefore for the formation of a required cardioid reception characteristic not enough. In this case one has helped oneself in such a way that one has the linear auxiliary antenna coupled to the loop antenna via a special amplifier. But that has i. the disadvantage that the required ratio of the two EMF with the time changes, so that the amplifier often has to be readjusted and z. it usually happens that when transitioning from actual direction finding (setting of the frame to minimum reception) to determine the side (setting the frame to Maximum reception) as a result of the excessive reception energy occurring in the second circuit the tubes become saturated and the audion: is inhibited in its activity.

Diese Nachteile können nach der Erfindung dadurch vermieden werden, daß die für die Seitenbestimmung unter Zuhilfenahme einer verhältnismäßig kleinen Hilfsantenne notwendige Abgleichung der von den beiden Antennen gelieferten EMKK nicht mittels eines im Kreise der Hilfsantenne liegenden Verstärkers, sondern durch eine Verminderung der Amplitude des Rahmenkreisstromes (oder des von dem Rahmenkreis gelieferten Stromes) durch geeignet eingeschaltete Widerstände erreicht wird.According to the invention, these disadvantages can be avoided by that the for the page determination with the help of a relatively small Auxiliary antenna necessary adjustment of the EMFK supplied by the two antennas not by means of an amplifier located in the circle of the auxiliary antenna, but through a decrease in the amplitude of the frame circuit current (or that of the frame circuit supplied current) is achieved by suitably switched on resistors.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgedankens schematisch dargestellt. Hier bedeutet i eine Rahmenantenne, z die lineare Hilfsantenne von so kleinen Dimensionen, daß. ihre EMK bedeutend kleiner ist als die maximale EMK der Rahmenantenne, 3 einen zur Phasenregelung dienenden Widerstand, q. einen Umschalter, mit dessen Hilfe man auf zwei entgegengesetzte Punkte der kardioidalen Empfangscharakteristik übergeht, um den Richtungssinn zu bestimmen. 5 ist der Abstimmkondensator des Rahmenkreises. 6d und 6b sind die bei der Benutzung der Hilfsantenne zur Seitenbestimmung erfindungsgemäß einzuschaltenden Dämpfungswiderstände. 7, 7 .sind die Anschlüsse .ah den Empfänger.In the drawing is an embodiment of the inventive concept shown schematically. Here i means a loop antenna, z the linear auxiliary antenna of such small dimensions that. their emf is significantly smaller than the maximum EMF of the loop antenna, 3 a resistor used for phase control, q. a Switch, with the help of which you can switch to two opposite points of the cardioid Receiving characteristic passes over to determine the sense of direction. 5 is the tuning capacitor of the frame circle. 6d and 6b are those when the auxiliary antenna is used to determine the side according to the invention to be switched on damping resistors. 7, 7 .are the connections .ah the recipient.

Claims (1)

PATRNTANSPRUCH: Peilantennensystem, bestehend aus einer Rahmenantenne und :einer Hilfsantenne, deren EMK kleiner ist als die maximale EMK der Rahmenantenne, gekennzeichnet durch bei der Verwendung der Hilfsantenne zur Seitenbestimmung einschaltbare Widerstände zur Verminderung der Amplitude des im Rahmenkreis erzeugten oder von diesem gelieferten Stromes.PATRNT CLAIM: DF antenna system, consisting of a loop antenna and: an auxiliary antenna whose EMF is smaller than the maximum EMF of the loop antenna, characterized by which can be switched on when the auxiliary antenna is used for determining the side Resistors to reduce the amplitude of the generated in the frame circle or from this supplied current.
DET40985D DF antenna system, consisting of a loop antenna and an auxiliary antenna Expired DE574373C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET40985D DE574373C (en) DF antenna system, consisting of a loop antenna and an auxiliary antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET40985D DE574373C (en) DF antenna system, consisting of a loop antenna and an auxiliary antenna

Publications (1)

Publication Number Publication Date
DE574373C true DE574373C (en) 1933-04-12

Family

ID=7560923

Family Applications (1)

Application Number Title Priority Date Filing Date
DET40985D Expired DE574373C (en) DF antenna system, consisting of a loop antenna and an auxiliary antenna

Country Status (1)

Country Link
DE (1) DE574373C (en)

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