DE903473C - Rotating directional antenna with reflector mirror - Google Patents

Rotating directional antenna with reflector mirror

Info

Publication number
DE903473C
DE903473C DEB8672D DEB0008672D DE903473C DE 903473 C DE903473 C DE 903473C DE B8672 D DEB8672 D DE B8672D DE B0008672 D DEB0008672 D DE B0008672D DE 903473 C DE903473 C DE 903473C
Authority
DE
Germany
Prior art keywords
directional antenna
mirror
base plate
rotating directional
reflector mirror
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
DEB8672D
Other languages
German (de)
Inventor
Dr Anton Koehler
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.)
BLAUPUNKT ELEKTRONIK GmbH
Original Assignee
BLAUPUNKT ELEKTRONIK GmbH
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 BLAUPUNKT ELEKTRONIK GmbH filed Critical BLAUPUNKT ELEKTRONIK GmbH
Priority to DEB8672D priority Critical patent/DE903473C/en
Application granted granted Critical
Publication of DE903473C publication Critical patent/DE903473C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/13—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/138—Parallel-plate feeds, e.g. pill-box, cheese aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device

Landscapes

  • Aerials With Secondary Devices (AREA)

Description

Es besteht häufig .die Aufgabe, :eine rotierende Richtantenne mit einem Reflektörspiegel, der z. B. durch ein offenes Rohr angeregt wird, drehbar anzuordnen. Man ist in diesem Fall aus konstruktiven Gründen gezwungen, den ganzen Spiegel, der z. B. die Form eines Segmentes einer Parabelfläche besitzt, und das in den .Spiegel hineinragende Rohr, dessen Öffnung in der Brennebene des Spiegels liegt, auf einem gemeinsamen Träger zu befestigen. Im Normalfall wird der Träger als kreisförmige Metallplatte ausgebildet. Diese Grundplatte bewirkt eine Deformierung dies iStrahlungsdiagramms in der Vertikalebene, derart, daß das Hauptmaximum unter einem von dem Durchmesser der Platte abhängigen Erhebungswinkel gegen die Horizontalebene erscheint. Hiermit ist ein Verstärkungsabfall in der Horizontalebene bzw. in deren Nähe verbunden.The task is often: a rotating directional antenna with a reflector mirror, the z. B. is excited by an open tube, rotatable to arrange. In this case, for constructive reasons, one is forced to do the whole Mirror, the z. B. has the shape of a segment of a parabolic surface, and that Tube protruding into the mirror, the opening of which is in the focal plane of the mirror is to be attached to a common carrier. Usually the carrier is designed as a circular metal plate. This base plate causes a deformation this is the radiation diagram in the vertical plane, in such a way that the main maximum is below an elevation angle depending on the diameter of the plate relative to the horizontal plane appears. This results in a decrease in gain in the horizontal plane or in its Proximity connected.

Die Erfindung gibt nun eine Möglichkeit, diesen Mangel zu beseitigen. Erfindungsgemäß wird die Oberseite des Spiegels mit einem Blech abgedeckt, das so bemessen ist, daß die Deformierung des Vertikaldiagramms durch die Grundplatte wieder kompensiert wird. Durch diese Maßnahme gelingt es, das Hauptmaximum in die Horizontalebene zurückzubiegen und den Verstärkungsverlust auszugleichen. Die günstigste Bemessung wird zweckmäßigerweise dadurch gefunden, daß beim kontinuierlichen Verschieben desselben durch Messung der Empfangsspannung festgestellt wird, wann die Amplitude eines genau in -der Horizontalebene einfallenden Senders ein Maximum annimmt. Mit der erfindungsgemäßen Anordnung kann im Mittel eine Leistungserhöhung um ungefähr 2o bis 30°!o- erzielt werden. In der Abbildung ist eine beispielsweise Ausführung der Erfindung in zwei Ansichten dargestellt.The invention now provides a way of eliminating this deficiency. According to the invention, the top of the mirror is covered with a sheet metal that is so is dimensioned that the deformation of the vertical diagram through the base plate again is compensated. This measure makes it possible to get the main maximum in the horizontal plane to bend back and compensate for the loss of reinforcement. The most favorable dimensioning is conveniently found that the same when moving continuously by measuring the received voltage it is determined when the amplitude of a precisely in the horizontal plane incident transmitter assumes a maximum. With the invention Arrangement can achieve a power increase of about 20 to 30 °! O- on average will. The figure shows an example embodiment of the invention in two Views shown.

Die rotierende Richtantenne für Wellen im Zentimeterbereich, die z. B. zur Verwendung auf einem Flugzeug bestimmt ist, besteht aus einem Parabolspiegelsegment i, das auf einer Grundplatte 2 befestigt ist. Diese ist um eine Achse A drehbar. DieAnregung des Antennensystems erfolgt durch einen gekrümmten Hohlleiter 3, dem die Energie über eine konzentrische Energieleitung 4 zugeführt wird. Parallel zu der Grundplatte ist eine Reflektorplatte 5 vorgesehen, durch die in der oben beschriebenen Weise das Hauptmaximum der Empfangscharakteristik in die Horizontalebene gedrückt wird.The rotating directional antenna for waves in the centimeter range that z. B. intended for use on an aircraft, consists of a parabolic mirror segment i, which is attached to a base plate 2. This can be rotated about an axis A. The antenna system is excited by a curved waveguide 3, the the energy is supplied via a concentric energy line 4. Parallel to the base plate is provided with a reflector plate 5, through which in the above-described Way, the main maximum of the reception characteristics pressed into the horizontal plane will.

Claims (3)

PATENTANSPRÜCHE: i. Rotierende Richtantenne mit Reflektorspiegel, der auf einer Grundplatte angeordnet ist, .dadurch gekennzeichnet, daß Mittel vorgesehen sind, um :die Deformierung :des Vertikaldiagramms durch die Grundplatte zu kompensieren. PATENT CLAIMS: i. Rotating directional antenna with reflector mirror, which is arranged on a base plate,. characterized in that means are provided are to: compensate for: the deformation of the vertical diagram by the base plate. 2. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß die Kompensation durch eine parallel zu :der Grundplatte liegende Reflektorplatte erfolgt. 2. Arrangement according to claim i, characterized in that the compensation by a reflector plate lying parallel to: the base plate takes place. 3. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß der Spiegel die Form eines Segmentes einerParabelfläche besitzt, das durch das offene Ende eines Hohlleiters angeregt wird.3. Arrangement according to claim i, characterized in that the mirror has the shape of a segment has a parabolic surface excited by the open end of a waveguide will.
DEB8672D 1945-01-27 1945-01-27 Rotating directional antenna with reflector mirror Expired DE903473C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB8672D DE903473C (en) 1945-01-27 1945-01-27 Rotating directional antenna with reflector mirror

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB8672D DE903473C (en) 1945-01-27 1945-01-27 Rotating directional antenna with reflector mirror

Publications (1)

Publication Number Publication Date
DE903473C true DE903473C (en) 1954-02-08

Family

ID=6955947

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB8672D Expired DE903473C (en) 1945-01-27 1945-01-27 Rotating directional antenna with reflector mirror

Country Status (1)

Country Link
DE (1) DE903473C (en)

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