EP0709913B1 - Dipole feeding arrangement - Google Patents

Dipole feeding arrangement Download PDF

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Publication number
EP0709913B1
EP0709913B1 EP95114297A EP95114297A EP0709913B1 EP 0709913 B1 EP0709913 B1 EP 0709913B1 EP 95114297 A EP95114297 A EP 95114297A EP 95114297 A EP95114297 A EP 95114297A EP 0709913 B1 EP0709913 B1 EP 0709913B1
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EP
European Patent Office
Prior art keywords
conductor
strip
distance
dipole
reflector
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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 - Lifetime
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EP95114297A
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German (de)
French (fr)
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EP0709913A2 (en
EP0709913A3 (en
Inventor
Axel Dipl.-Ing. Stark
Berthold Dipl.-Ing. Klos
Ludwig Dipl.-Ing. Nielsen
Andreas Dipl.-Ing. Knüttel
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Rohde and Schwarz GmbH and Co KG
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Rohde and Schwarz GmbH and Co KG
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Publication of EP0709913A2 publication Critical patent/EP0709913A2/en
Publication of EP0709913A3 publication Critical patent/EP0709913A3/en
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Publication of EP0709913B1 publication Critical patent/EP0709913B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0075—Stripline fed arrays
    • H01Q21/0081—Stripline fed arrays using suspended striplines

Definitions

  • the invention relates to an arrangement for symmetrical dining or several dipoles arranged in front of a reflector surface over one unbalanced stripline.
  • Balancing transformer can be manufactured using stripline technology, whereby the Center conductor of the unbalanced stripline between two at a distance stripline pairs arranged from one another is routed in the middle (British Patent specification GB 2089135 A, Fig. 2).
  • This central conductor strip ends between the second pair of strip conductors without connection, the symmetrical away from it Stripline leading to the dipoles is with the top stripline of the first Stripline pair and the lower stripline of the second Stripline pair connected.
  • the feed arrangement according to the invention is a galvanic electrically conductive contact between the Stripline of the asymmetrical stripline and the dipole is superfluous, the stripline ends without a connection.
  • the two dipole halves are over connection strips only with the two additional ones at an axial distance insulated from each other on the conductor strips
  • Conductor parts galvanically connected and these parts can therefore very easy and cheap by punching and bending be made from a piece of sheet metal, additional galvanic joints by soldering, screwing or the like become superfluous.
  • An inventive Dining arrangement is therefore not only very simple and inexpensive to manufacture, but also extremely reliable, failure due to bad contacts is impossible.
  • the feed arrangement according to the invention is suitable also suitable for feeding from several to groups summarized dipoles, e.g. to increase the Antenna gain can be used.
  • Fig. 1 shows a perspective view of an inventive Feed arrangement
  • Fig. 2 shows the associated Cross-section along the section line I-I.
  • Fig. 1 shows one consisting of two dipole halves 1 and 2 Dipole in the shown embodiment is designed as a half-wave dipole. This dipole could also be designed as a full-wave dipole, the two Dipole halves 1, 2 can also have different lengths have and have any cross-sectional shape.
  • This two dipole halves 1, 2 are at a distance 3 before one for the sake of clarity only fragmentary in Fig. 1 shown reflector surface 4 arranged.
  • the two dipole halves 1, 2 are at the upper ends of two spaced apart and parallel to each other arranged terminal strips 5, 6 attached by an opening 7 of the reflector 4 up to the rear extend and the symmetrical feed line for form the dipole 1, 2.
  • the terminal strips 5, 6 are preferably in one piece with the dipole halves 1, 2 punched out and bent into a piece of sheet metal. Which opposite conductor surfaces of these two connection strips 5, 6 and their distance is chosen so that about the wave resistance thus formed between the two dipole halves 1, 2 existing dipole impedance on one of their connection ends ending behind the reflector desired output impedance transformed becomes.
  • On the connecting strips 5, 6 can for this purpose over part or all of the length Sheet metal bends can be provided for an extended To reach the range of the impedance transformation.
  • connection to the transmitter or receiver is made in the exemplary embodiment shown via a strip line, which in the further course into another type of line, e.g. a coaxial cable.
  • the stripline is paralleled by a distance between the reflector surface 4 and one parallel to the reflector arranged rear wall 30, for example a supporting mast guided strip line 8 formed.
  • On this stripline 8 are two U-shaped in cross section Conductor parts 9 and 10 placed so that they according to the sectional view of FIG. 2, a distance on all sides own of the stripline 8.
  • the strip conductor 8 are the two conductor parts 9, 10 immediately below the opening 7 of the reflector 4 arranged at a distance 11 from each other.
  • each ⁇ / 4 chosen so that their Impedance to that due to the balanced line 5, 6 transformed dipole impedance is high.
  • reflector surface 4 or rear wall 30 formed a kind of pot circle.
  • the U-shaped curved conductor parts 9, 10 with their Connection flanges 14, 14 ', 15, 15', the branches branching therefrom Terminal strips 5, 6 and the dipole halves 1, 2 are preferably cut in one piece from sheet metal and bent accordingly, they will be including the Dipole halves 1, 2 through the flange fastenings 14, 14 ', 15, 15 'on the reflector 4 or the rear wall 30 mechanically held. If necessary, the conductor strip 8 mechanically by means of one or more dielectric supports be supported, otherwise all parts are in theirs predetermined distance from each other electrically by air isolated.
  • the width 17 of the U-legs of the two conductor parts 9, 10, their mutual distance 18 and the width and thickness of the strip line 8 and also the axial length of the Conductor parts 9, 10 are chosen so that the determined wave resistance and the resulting frequency-dependent impedance on the two conductor parts High frequency currents - indicated by the current arrows 19 and 20 - are forced on the opposite Junction points 12, 13 of the connecting strips 5, 6 of the Dipole feed line are each the same size, so that on the connecting strips 5, 6 correspondingly the same size opposite phase feed currents 23, 24 and thus corresponding equally large rectified currents 25, 26 on the Dipole halves 1, 2 flow.
  • the stripline 8 If on the side opposite the reflector 4 the stripline 8 no additional rear wall 30 as Partial return line is provided, the lower U-legs of the conductor parts 9, 10 are omitted, the conductor parts are then only narrow strips of metal that arranged between reflector 4 and stripline 8 are and at their ends with the connecting strips 5, 6th or via the bends 14, 15 with the reflector 4 are connected.
  • omnidirectional antennas can also be used be built, where also lateral reflector surfaces are provided.

Description

Die Erfindung betrifft eine Anordnung zum symmetrischen Speisen eines oder mehrerer im Abstand vor einer Reflektorfläche angeordneten Dipole über eine unsymmetrische Streifenleitung.The invention relates to an arrangement for symmetrical dining or several dipoles arranged in front of a reflector surface over one unbalanced stripline.

Bei den bisher üblichen Speiseanordnungen besteht galvanischer Kontakt zwischen dem Innenleiter der unsymmetrischen Speiseleitung und der einen Dipolhälfte, selbst wenn die Speiseleitung als unsymmetrische Streifenleitung ausgebildet ist. Die Herstellung eines langfristig zuverlässigen galvanischen Kontaktes erfordert bei Antennen einen gewissen Aufwand, solche Kontaktstellen sind selbst bei sorgfältiger Verarbeitung bei langjährigem Einsatz häufig eine Ausfallursache.In the usual feed arrangements there is galvanic contact between the inner conductor of the unbalanced feed line and one dipole half, itself if the feed line is designed as an asymmetrical strip line. The Establishing a long-term reliable galvanic contact requires Antennas a certain amount of work, such contact points are even more careful Processing with many years of use is often a cause of failure.

Es ist auch schon bekannt, solche Dipole unter Zwischenschaltung eines Symmetrierübertrage (Balun) über eine unsymmetrische Streifenleitung zu speisen (britische Patentschrift GB 2089135 A, US-Patentschriften US 4755775 und US 2327418). Dieser Symmetrierübertrager kann in Streifenleitungstechnik hergestellt werden, wobei der Mittelleiter der unsymmetrischen Streifenleitung zwischen zwei im Abstand voneinander angeordneten Streifenleitungspaaren mittig geführt wird (britische Patentschrift GB 2089135 A, Fig. 2). Dieser Mittelleiterstreifen endet zwischen dem zweiten Streifenleiterpaar anschlußfrei, die davon weggeführte symmetrische Streifenleitung, die zu den Dipolen führt, ist mit der oberen Streifenleitung des ersten Streifenleitungspaares und der unteren Streifenleitung des zweiten Streifenleitungspaares verbunden.It is also known to insert such dipoles Balancing transmission to feed via an asymmetrical stripline (British patent GB 2089135 A, US patents US 4755775 and US 2327418). This Balancing transformer can be manufactured using stripline technology, whereby the Center conductor of the unbalanced stripline between two at a distance stripline pairs arranged from one another is routed in the middle (British Patent specification GB 2089135 A, Fig. 2). This central conductor strip ends between the second pair of strip conductors without connection, the symmetrical away from it Stripline leading to the dipoles is with the top stripline of the first Stripline pair and the lower stripline of the second Stripline pair connected.

Es ist daher Aufgabe der Erfindung, eine Speiseanordnung zum unsymmetrischen Speisen von Dipolen aufzuzeigen, die vor einer Reflektorfläche angeordnet sind und bei der trotzdem die erwähnten unzuverlässigen Kontaktstellen vermieden sind. It is therefore an object of the invention to provide an unbalanced feed arrangement To show dishes of dipoles, which are arranged in front of a reflector surface and in which the unreliable contact points mentioned are avoided.

Diese Aufgabe wird ausgehend von einer Speiseanordnung laut Oberbegriff des Hauptanspruches durch dessen kennzeichnende Merkmale gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen. This task is based on a food arrangement according to the preamble of Main claim solved by its characteristic features. advantageous Further training results from the subclaims.

Bei der erfindungsgemäßen Speiseanordnung ist ein galvanischer elektrisch leitender Kontakt zwischen dem Streifenleiter der unsymmetrischen Streifenleitung und dem Dipol überflüssig, der Streifenleiter endet anschlußfrei. Die beiden Dipolhälften sind über Anschlußstreifen nur mit den beiden zusätzlichen im axialen Abstand voneinander isoliert auf den Leiterstreifen aufgesetzten Leiterteilen galvanisch verbunden und diese Teile können daher sehr einfach und billig durch Stanzen und Biegen aus einem Blechstück hergestellt werden, zusätzliche galvanische Verbindungsstellen durch Löten, Schrauben oder dergleichen werden überflüssig. Eine erfindungsgemäße Speiseanordnung ist daher nicht nur sehr einfach und kostengünstig herstellbar, sondern auch extrem zuverlässig, ein Ausfall durch schlechte Kontakte ist ausgeschlossen. Die erfindungsgemäße Speiseanordnung eignet sich auch für die Speisung von mehreren zu Gruppen zusammengefaßten Dipolen, wie sie z.B. zur Erhöhung des Antennengewinns verwendet werden.In the feed arrangement according to the invention is a galvanic electrically conductive contact between the Stripline of the asymmetrical stripline and the dipole is superfluous, the stripline ends without a connection. The two dipole halves are over connection strips only with the two additional ones at an axial distance insulated from each other on the conductor strips Conductor parts galvanically connected and these parts can therefore very easy and cheap by punching and bending be made from a piece of sheet metal, additional galvanic joints by soldering, screwing or the like become superfluous. An inventive Dining arrangement is therefore not only very simple and inexpensive to manufacture, but also extremely reliable, failure due to bad contacts is impossible. The feed arrangement according to the invention is suitable also suitable for feeding from several to groups summarized dipoles, e.g. to increase the Antenna gain can be used.

Die Erfindung wird im folgenden anhand schematischer Zeichnungen an einem Ausführungsbeispiel näher erläutert.The invention will now be described more schematically Drawings explained in more detail using an exemplary embodiment.

Fig. 1 zeigt in perspektivischer Darstellung eine erfindungsgemäße Speiseanordnung, Fig. 2 zeigt den zugehörigen Querschnitt längs der Schnittlinie I-I.Fig. 1 shows a perspective view of an inventive Feed arrangement, Fig. 2 shows the associated Cross-section along the section line I-I.

Fig. 1 zeigt einen aus zwei Dipolhälften 1 und 2 bestehenden Dipol, der in dem gezeigen Ausführungsbeispiel als Halbwellendipol ausgebildet ist. Dieser Dipol könnte auch als Ganzwellendipol ausgebildet sein, die beiden Dipolhälften 1, 2 können außerdem unterschiedliche Längen haben und beliebige Querschnittsform besitzen. Diese beiden Dipolhälften 1, 2 sind in einem Abstand 3 vor einer der Übersichtlichkeit halber in Fig. 1 nur bruchstückhaft dargestellten Reflektorfläche 4 angeordnet. Die beiden Dipolhälften 1, 2 sind an den oberen Enden von zwei im Abstand voneinander und parallel zueinander angeordneten Anschlußstreifen 5, 6 angebracht, die durch eine Öffnung 7 des Reflektors 4 bis zu dessen Rückseite sich erstrecken und die symmetrische Speiseleitung für den Dipol 1, 2 bilden. Die Anschlußstreifen 5, 6 sind vorzugsweise einstückig mit den Dipolhälften 1, 2 aus einem Blechstück ausgestanzt und gebogen. Die sich gegenüberstehenden Leiterflächen dieser beiden Anschlußstreifen 5, 6 und deren Abstand ist so gewählt, daß über den dadurch gebildeten Wellenwiderstand die zwischen den beiden Dipolhälften 1, 2 bestehende Dipolimpedanz auf einen an ihren hinter dem Reflektor endenden Anschlußenden gewünschte Ausgangsimpedanz transformiert wird. An den Anschlußstreifen 5, 6 können zu diesem Zweck auf einem Teil oder der gesamten Länge noch zusätzliche Blechabwinklungen vorgesehen sein, um einen erweiterten Bereich der Impedanztransformation zu erreichen.Fig. 1 shows one consisting of two dipole halves 1 and 2 Dipole in the shown embodiment is designed as a half-wave dipole. This dipole could also be designed as a full-wave dipole, the two Dipole halves 1, 2 can also have different lengths have and have any cross-sectional shape. This two dipole halves 1, 2 are at a distance 3 before one for the sake of clarity only fragmentary in Fig. 1 shown reflector surface 4 arranged. The two dipole halves 1, 2 are at the upper ends of two spaced apart and parallel to each other arranged terminal strips 5, 6 attached by an opening 7 of the reflector 4 up to the rear extend and the symmetrical feed line for form the dipole 1, 2. The terminal strips 5, 6 are preferably in one piece with the dipole halves 1, 2 punched out and bent into a piece of sheet metal. Which opposite conductor surfaces of these two connection strips 5, 6 and their distance is chosen so that about the wave resistance thus formed between the two dipole halves 1, 2 existing dipole impedance on one of their connection ends ending behind the reflector desired output impedance transformed becomes. On the connecting strips 5, 6 can for this purpose over part or all of the length Sheet metal bends can be provided for an extended To reach the range of the impedance transformation.

Die Verbindung mit dem Sender oder Empfänger erfolgt in dem gezeigten Ausführungsbeispiel über eine Streifenleitung, die im weiteren Verlauf in eine andere Leitungsart, z.B. ein Koaxialkabel, übergehen kann. Die Streifenleitung wird durch einen parallel im Abstand zwischen der Reflektorfläche 4 und einer parallel zum Reflektor angeordneten Rückwand 30, beispielsweise einem Tragmast geführten Streifenleiter 8 gebildet. Auf diesen Streifenleiter 8 sind zwei im Querschnitt U-förmig gebogene Leiterteile 9 und 10 aufgesetzt und zwar so, daß sie gemäß dem Schnittbild nach Fig. 2 allseits einen Abstand von dem Streifenleiter 8 besitzen. In Längserstreckung des Streifenleiters 8 sind die beiden Leiterteile 9, 10 unmittelbar unterhalb der Öffnung 7 des Reflektors 4 in einem Abstand 11 voneinander angeordnet. Mit den einander zugewandten Enden 12, 13 der beiden Leiterteile 9, 10 stehen die durch die Öffnung 7 nach unten ragenden Anschlußstreifen 5, 6 der Dipol-Speiseleitung in Verbindung, sie sind vorzugsweise wiederum unmittelbar aus einem Blechstück mit den Leiterteilen hergestellt. Die den Enden 12, 13 abgewandten Enden der beiden Leiterteile 9, 10 sind über nach oben und unten abgebogene Flansche 14, 14' und 15, 15 galvanisch am Reflektor 4 bzw. der Rückwand 30 befestigt. Der zwischen den Leiterteilen 9, 10 angeordnete Streifenleiter 8 endet anschlußfrei im Abstand 16 vom Kurzschlußende 14 des der unsymmetrischen Streifenleitung abgewandten Leiterteiles 9. Die Längen jedes der Leiterteile 9, 10 sind gleich und z.B. in der Umgebung von jeweils λ/4 so gewählt, daß ihre Impedanz gegenüber der durch die symmetrische Leitung 5, 6 transformierte Dipolimpedanz hochohmig ist. Zwischen den beiden Leiterteilen 9, 10 und der im Abstand dazu angeordneten Reflektorfläche 4 bzw. Rückwand 30 wird eine Art Topfkreis gebildet.The connection to the transmitter or receiver is made in the exemplary embodiment shown via a strip line, which in the further course into another type of line, e.g. a coaxial cable. The stripline is paralleled by a distance between the reflector surface 4 and one parallel to the reflector arranged rear wall 30, for example a supporting mast guided strip line 8 formed. On this stripline 8 are two U-shaped in cross section Conductor parts 9 and 10 placed so that they according to the sectional view of FIG. 2, a distance on all sides own of the stripline 8. In the longitudinal direction the strip conductor 8 are the two conductor parts 9, 10 immediately below the opening 7 of the reflector 4 arranged at a distance 11 from each other. With the mutually facing ends 12, 13 of the two conductor parts 9, 10 are those projecting downward through the opening 7 Connection strips 5, 6 of the dipole feed line in connection, they are preferably immediately off again a piece of sheet metal with the conductor parts. The the ends 12, 13 facing away from the ends of the two conductor parts 9, 10 are over flanges bent up and down 14, 14 'and 15, 15 galvanically on the reflector 4 or the Rear wall 30 attached. The one between the ladder parts 9, 10 arranged stripline 8 ends without a connection at a distance 16 from the short-circuit end 14 of the asymmetrical Strip line facing away conductor part 9. Die Lengths of each of the conductor parts 9, 10 are the same and e.g. in the vicinity of each λ / 4 chosen so that their Impedance to that due to the balanced line 5, 6 transformed dipole impedance is high. Between the two conductor parts 9, 10 and at a distance from it arranged reflector surface 4 or rear wall 30 formed a kind of pot circle.

Die U-förmig gebogenen Leiterteile 9, 10 mit ihren Anschlußflanschen 14, 14', 15, 15', den davon abzweigenden Anschlußstreifen 5, 6 und den Dipolhälften 1, 2 sind vorzugsweise einstückig aus einem Blech zugeschnitten und entsprechend gebogen, sie werden einschließlich der Dipolhälften 1, 2 durch die Flanschbefestigungen 14, 14', 15, 15' am Reflektor 4 bzw. der Rückwand 30 mechanisch gehalten. Falls erforderlich kann der Leiterstreifen 8 durch eine oder mehrere dielektrische Stützen mechanisch abgestützt sein, ansonsten sind alle Teile in ihrem vorgegebenen Abstand durch Luft voneinander elektrisch isoliert.The U-shaped curved conductor parts 9, 10 with their Connection flanges 14, 14 ', 15, 15', the branches branching therefrom Terminal strips 5, 6 and the dipole halves 1, 2 are preferably cut in one piece from sheet metal and bent accordingly, they will be including the Dipole halves 1, 2 through the flange fastenings 14, 14 ', 15, 15 'on the reflector 4 or the rear wall 30 mechanically held. If necessary, the conductor strip 8 mechanically by means of one or more dielectric supports be supported, otherwise all parts are in theirs predetermined distance from each other electrically by air isolated.

Die Breite 17 der U-Schenkel der beiden Leiterteile 9, 10, ihr gegenseitiger Abstand 18 und die Breite und Dicke des Streifenleiters 8 und auch die axiale Länge der Leiterteile 9, 10 sind so gewählt, daß über den dadurch bestimmten Wellenwiderstand und die dadurch resultierende frequenzabhängige Impedanz auf den beiden Leiterteilen Hochfrequenzströme - angedeutet durch die Strompfeile 19 und 20 - erzwungen werden die an den gegenüberliegenden Anschlußstellen 12, 13 der Anschlußstreifen 5, 6 der Dipolspeiseleitung jeweils gleich groß sind, so daß auf den Anschlußstreifen 5, 6 entsprechend gleich große gegenphasige Speiseströme 23, 24 und somit entsprechende gleich große gleichgerichtete Ströme 25, 26 auf den Dipolhälften 1, 2 fließen. Zur Erzielung der hierzu erforderlichen Wellenwiderstände zwischen den Leiterteilen 9, 10 und dem Streifenleiter 8 können sowohl die Leiterteile als auch dieser Leiterstreifen in Längserstreckung des Leiterstreifens entsprechend unterschiedliche Abmessungen besitzen, wie dies für den Streifenleiter 8 durch die Breitenveränderungen 27, 28 in Fig. 1 schematisch angedeutet ist. Für die einseitige Stromabnahme von den Leiterteilen 9, 10 zu den Dipolhälften über die Anschlußstreifen 5, 6 ist die leitende Verbindung der beiden U-Schenkel der Leiterteile durch den U-Rücken erforderlich, die Leiterteile sind derart parallel zum Reflektor 4 angeordnet, daß ihre U-Schenkel jeweils in parallelen Ebenen zum Reflektor 4 liegen und ihre Öffnung seitlich ist. Der Wellenwiderstand wird außerdem so gewählt, daß bei Verwendung dieser Speiseanordnung bei einem Sendedipol die über die unsymmetrische Streifenleitung 8, 4 zugeführte Senderenergie an der durch den Einlaß des Leiterteils 10 gebildeten Stoßstelle möglichst wenig reflektiert wird.The width 17 of the U-legs of the two conductor parts 9, 10, their mutual distance 18 and the width and thickness of the strip line 8 and also the axial length of the Conductor parts 9, 10 are chosen so that the determined wave resistance and the resulting frequency-dependent impedance on the two conductor parts High frequency currents - indicated by the current arrows 19 and 20 - are forced on the opposite Junction points 12, 13 of the connecting strips 5, 6 of the Dipole feed line are each the same size, so that on the connecting strips 5, 6 correspondingly the same size opposite phase feed currents 23, 24 and thus corresponding equally large rectified currents 25, 26 on the Dipole halves 1, 2 flow. To achieve this required impedance between the conductor parts 9, 10 and the stripline 8 can both the conductor parts as well as this conductor strip in the longitudinal extent of the conductor strip according to different dimensions have how this for the stripline 8th by the changes in width 27, 28 in Fig. 1 schematically is indicated. For one-sided power consumption from the conductor parts 9, 10 to the dipole halves over the Terminal strip 5, 6 is the conductive connection of the two U-legs of the ladder parts through the U-back required, the conductor parts are parallel to the Reflector 4 arranged that their U-legs each in parallel planes to the reflector 4 and their opening is on the side. The wave resistance is also like this chosen that when using this feed arrangement at a transmit dipole over the unbalanced stripline 8, 4 supplied transmitter energy at the by the Inlet of the conductor part 10 formed joint as possible little is reflected.

Wenn auf der dem Reflektor 4 gegenüberliegenden Seite des Streifenleiters 8 keine zusätzliche Rückwand 30 als Teilrückleiter vorgesehen ist, können die unteren U-Schenkel der Leiterteile 9, 10 entfallen, die Leiterteile sind dann nur noch schmale Blechstreifen, die zwischen Reflektor 4 und Streifenleiter 8 angeordnet sind und an ihren Enden mit den Anschlußstreifen 5, 6 bzw. über die Abbiegungen 14, 15 mit dem Reflektor 4 verbunden sind.If on the side opposite the reflector 4 the stripline 8 no additional rear wall 30 as Partial return line is provided, the lower U-legs of the conductor parts 9, 10 are omitted, the conductor parts are then only narrow strips of metal that arranged between reflector 4 and stripline 8 are and at their ends with the connecting strips 5, 6th or via the bends 14, 15 with the reflector 4 are connected.

In dem Ausführungsbeispiel nach Fig. 1 ist nur ein einziger Dipol 1, 2 dargestellt, die erfindungsgemäße Speiseanordnung ist jedoch genauso gut zur gleichzeitigen Speisung von mehreren parallelgeschalteten Dipolen geeignet, die entweder parallel nebeneinander vor der gleichen Reflektorfläche 4 angeordnet sind und in gleicher Richtung abstrahlen, in diesem Fall zweigen von den Anschlußenden 12, 13 der beiden Leiterteile die zugehörigen Dipol-Anschlußstreifen nicht wie die Streifen 5, 6 senkrecht nach oben ab, sondern beispielsweise zu beiden Seiten seitlich schräg nach oben, wie dies durch die Streifen 31, 32 gestrichelt angedeutet ist. In manchen Fällen kann beispielsweise auch die Rückwand 30 als Reflektor ausgebildet sein und auch hier kann ein damit nach hinten abstrahlender einziger Dipol oder gegebenenfalls wiederum mehrere Dipole angeordnet sein, die in diesem Fall über Anschlußstreifen 5' 6' oder 31', 32' durch eine entsprechende Öffnung in der Rückwand 30 nach hinten abzweigen. Auf diese Weise können auch Rundstrahlantennen aufgebaut werden, bei denen auch noch seitliche Reflektorflächen vorgesehen sind.In the exemplary embodiment according to FIG. 1 there is only one only dipole 1, 2 shown, the invention However, dining arrangement is just as good for simultaneous Feeding of several dipoles connected in parallel suitable either in parallel next to each other in front of the same reflector surface 4 are arranged and in the same Radiate direction, in this case branches from the Connection ends 12, 13 of the two conductor parts the associated Dipole connector strips are not like the strips 5, 6 vertically upwards, but for example too both sides sloping upwards like this through the strips 31, 32 is indicated by dashed lines. In some Cases, for example, can also be the rear wall 30 Be designed reflector and can also be used here single dipole radiating to the rear or, if necessary in turn, several dipoles arranged in in this case via connecting strips 5 '6' or 31 ', 32' through a corresponding opening in the rear wall 30 turn off at the back. In this way, omnidirectional antennas can also be used be built, where also lateral reflector surfaces are provided.

Claims (6)

  1. Arrangement for the balanced feeding of at least one dipole (1, 2) disposed at a distance in front of a reflector surface (4) via an unbalanced strip line that is formed by a strip conductor (8) disposed at a distance between the reflector surface (4) and a further conducting countersurface (30) disposed in parallel at a distance therefrom, characterized by the following features:
    a) the conductor strip (8) extending in parallel with the reflector surface (4) ends without termination;
    b) two conductor parts (9, 10) that are U-shaped in cross section and that are disposed at a distance (11) from one another in the longitudinal direction of the strip conductor (8) surround the strip conductor (8);
    c) at the mutually facing ends (12, 13) of said conductor parts (9, 10), there branch off transversely to the conductor strip (8) connecting strips (5, 6; 31, 32; 6', 31', 32') that are disposed at a distance in parallel to one another, project through an opening (7) in the reflector surfacee (4) to the front side of the reflector and are connected at their ends to the dipole halves (1, 2);
    d) those ends facing away from the mutually facing ends (12, 13) of the two conductor parts (9, 10) are galvanically connected via conductor segments (14, 14', 15, 15') to the reflector (4) or the countersurface (30).
  2. Arrangement according to Claim 1, characterized in that the dimensions (17, 18) of the conductor parts (9, 10) and their distance from the conductor strip (8), the reflector surface (4) and the countersurface (30) are chosen in such a way that opposite-phase currents (19, 20, 23, 24) that are equally large in terms of magnitude flow in each case at the branching point (12, 13) of the dipole connecting strips (5, 6) and along the latter.
  3. Arrangement according to Claim 1 or 2, characterized in that the U-shaped conductor parts (9, 10) are open laterally in the direction parallel to the reflector surface (4).
  4. Arrangement according to any of the preceding claims, characterized in that a plurality of connecting strips (31, 32; 6', 31', 32') for two or more dipoles branch off in each case at the mutually facing ends (12, 13) of the two conductor parts (9, 10) in different directions transversely to the conductor strip (8).
  5. Arrangement according to any of the preceding claims, characterized in that mutually facing, additional conductor surfaces are formed at the dipole connecting strips (5, 6) disposed parallel to one another at a distance.
  6. Arrangement according to any of the preceding claims, characterized in that the two conductor parts (9, 10) with the branching connecting strips (5, 6), the angled conductor segments (14, 14', 15, 15') and the associated dipole halves (1, 2) each comprise a suitably bent, integral sheet-metal blank.
EP95114297A 1994-10-31 1995-09-12 Dipole feeding arrangement Expired - Lifetime EP0709913B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438809A DE4438809B4 (en) 1994-10-31 1994-10-31 Dipolspeiseanordnung
DE4438809 1994-10-31

Publications (3)

Publication Number Publication Date
EP0709913A2 EP0709913A2 (en) 1996-05-01
EP0709913A3 EP0709913A3 (en) 1998-10-14
EP0709913B1 true EP0709913B1 (en) 2003-05-21

Family

ID=6532096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114297A Expired - Lifetime EP0709913B1 (en) 1994-10-31 1995-09-12 Dipole feeding arrangement

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EP (1) EP0709913B1 (en)
DE (2) DE4438809B4 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2764587B1 (en) 1997-06-13 1999-08-06 Aries Packaging SPACER MECHANISM AND THREE-CHAIN CONTINUOUS PRODUCT TRANSFER
DE10316564B4 (en) * 2003-04-10 2006-03-09 Kathrein-Werke Kg Antenna with at least one dipole or a dipole-like radiator arrangement
DE202005015708U1 (en) * 2005-10-06 2005-12-29 Kathrein-Werke Kg Dual-polarized broadside dipole array, e.g. for crossed antennas, has a dual-polarized radiator with polarizing planes and a structure like a dipole square
CN102077419A (en) * 2008-04-25 2011-05-25 Spx公司 Phased-array antenna panel for super economical broadcast system
US8963656B2 (en) 2010-05-24 2015-02-24 Silicon Image, Inc. Apparatus, system, and method for a compact symmetrical transition structure for radio frequency applications
CN102983389B (en) * 2011-09-07 2015-09-30 深圳市华一通信技术有限公司 A kind of antenna element
DE102017116920A1 (en) * 2017-06-09 2018-12-13 Kathrein Se Dual polarized cross dipole and antenna arrangement with two such dual polarized cross dipoles

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE907544C (en) * 1940-07-05 1954-03-25 Lorenz C Ag Arrangement for the connection of a coaxial high-frequency power line with a symmetrical high-frequency power line
US3827001A (en) * 1973-06-25 1974-07-30 Us Navy Wide band series-connected equal amplitude power divider
GB2089135B (en) * 1980-11-28 1984-08-01 Marconi Co Ltd Improvements in or relating to baluns
PL141094B1 (en) * 1983-12-09 1987-06-30 Polska Akad Nauk Centrum Microwave balun transformer,especially for mixers and modulators
US5025232A (en) * 1989-10-31 1991-06-18 Texas Instruments Incorporated Monolithic multilayer planar transmission line
FR2655202B1 (en) * 1989-11-24 1992-02-07 Thomson Csf CIRCULAR POLARIZATION ANTENNA, ESPECIALLY FOR ANTENNA NETWORK.
DE4302905C1 (en) * 1993-02-02 1994-03-17 Kathrein Werke Kg Directional antenna, pref. symmetrical dipole type - is formed by cutting and/or stamping out sections of reflector wall and bending remaining bridging piece

Also Published As

Publication number Publication date
EP0709913A2 (en) 1996-05-01
DE4438809B4 (en) 2004-11-04
DE4438809A1 (en) 1996-05-02
DE59510691D1 (en) 2003-06-26
EP0709913A3 (en) 1998-10-14

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