EP2052434A1 - Directional coupler - Google Patents

Directional coupler

Info

Publication number
EP2052434A1
EP2052434A1 EP07786579A EP07786579A EP2052434A1 EP 2052434 A1 EP2052434 A1 EP 2052434A1 EP 07786579 A EP07786579 A EP 07786579A EP 07786579 A EP07786579 A EP 07786579A EP 2052434 A1 EP2052434 A1 EP 2052434A1
Authority
EP
European Patent Office
Prior art keywords
coupling region
directional coupler
coupler according
conductors
metal housing
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.)
Granted
Application number
EP07786579A
Other languages
German (de)
French (fr)
Other versions
EP2052434B1 (en
Inventor
Christian Evers
Ralf JÜNEMANN
Alexander Bayer
Markus Leipold
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Publication of EP2052434A1 publication Critical patent/EP2052434A1/en
Application granted granted Critical
Publication of EP2052434B1 publication Critical patent/EP2052434B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips

Definitions

  • the invention relates to a directional coupler according to the preamble of the main claim.
  • Directional couplers of this kind are known, for example, from Meinke / Grundlach, Taschenbuch der Hochfrequenztechnik, 5th edition, pages L29 to L34.
  • An ideal separation of the forward and backward waves is possible only with directional couplers, which allow a propagation of TEM waves. So far, this has only been possible with directional couplers in coaxial cable technology.
  • Directional couplers in microstrip line or coplanar line technology do not allow propagation of pure TEM waves.
  • directional couplers in coaxial line technology are relatively complex in construction.
  • the simpler directional couplers in microstrip line or coplanar line technology have the disadvantage that they do not permit pure TEM wave propagation and therefore the phase constants of the even and odd modes, which are so important for the function of a directional coupler, are not identical.
  • An inventive directional coupler can be made very simple and inexpensive. He is extremely low-loss and above all, an extremely large bandwidth, for example, between 1 GHz and 70 GHz can be achieved.
  • Fig. 1 shows a perspective plan view of a directional coupler according to the invention with the housing cover removed;
  • Fig. 2 shows a section along the line A-A in Figure 1 in magnification.
  • Fig. 3 shows the top view of one of the two flat sheet-metal strip conductor and with respect to the
  • Width scaled by a factor of approximately 5 and
  • FIG. 4 shows a perspective top view of a further embodiment of a directional coupler according to the invention with an integrated massive test port and a straight continuous and only one curved band conductor.
  • Fig. 1 shows a perspective plan view of a directional coupler according to the invention with a flat metal housing 1 with removed cover 2.
  • a flat space 3 is milled out, in the lateral open to the front sides of the metal housing open connection sections.
  • coaxial connector couplings 4 - 7 are fastened to the lateral end faces of the metal housing 1, the inner conductors of which project into connecting sections of the flat space 3 of the metal housing.
  • This flat metal housing space 3 is closed as shown in FIG. 2 from above by means of a flat cover 2 and bolted via not shown screws (holes 8) high frequency tight to the housing 1.
  • the four coaxial line couplings 4 to 7 each form the four high-frequency ports of the directional coupler.
  • the actual coupled lines are formed by two flat sheet-metal strip conductors 9 and 10, in the
  • Coupling region between El and E2 with their broad sides facing each other at a distance next to each other are arranged.
  • these two band conductors 9 and 10 are held upright in the coupling region with their broad sides perpendicular to the bottom of the housing space 3 and perpendicular to the inner surface of the attached lid 2 in the metal housing space 3.
  • these flat sheet metal strip conductors are laterally bent outwards and fastened to the inner conductor ends of the coaxial conductor couplings 4 to 7.
  • These flat band conductors consist of a resilient sheet material, such as copper beryllium.
  • Fig. 3 shows the top view of a not yet bent strip conductor.
  • the width is increased here for better understanding about five times.
  • the two terminal ends 11 and 12, which are bent during assembly, have approximately the same width.
  • the actual coupling section between El and E2 has gradually increasing width.
  • the width is tapered and increases only gradually until the coupling end E2 again until the width of the terminal end 12 is reached.
  • the width of the terminal ends 11 and 12 and the respective distance to the bottom of the housing space 3 and to the inner surface of the lid 2 are chosen so that the terminal ends each have the same characteristic impedance as the subsequent coaxial line couplings, generally 50 ohms.
  • the two strip conductors 9 and 10 are arranged according to FIG. 1 in the coupling region between E1 and E2 in a distance which increases exponentially from E to E2. Their end faces are shown in FIG. 2 at a predetermined distance from the lid and
  • This approximately exponential course of the distance between the two strip conductors beginning with the narrowest point at the beginning of the coupling region El and the widest point at the end E2 of the coupling region ensures, together with the course shown in Fig. 3, the width of the band conductor 9, 10 that the product of Z Even and Z Odd at each point of the coupling system is equal to the square of the system wave resistance, for example, 50 ohms. This ensures a good adaptation and isolation of the directional coupler.
  • the two flat sheet metal strip conductors 9 and 10 are held in the flat space 3 in the predetermined distances from the metal housing 1 and cover 2 via support elements made of insulating material.
  • each of the coupling region E1-E2 laterally outwardly bent terminal ends 11, 12 each held on small plastic rollers 13 which are glued to the metal housing 1, for example, and the both sides of the broad sides of the band conductor 9, 10 abut and preferably also glued to the strip conductors.
  • these strip conductors 9, 10 are held by plungers 14 made of insulating material, which are distributed along the strip conductors at a distance and are guided in bores of the longitudinal end faces of the metal housing 1. These plungers 14 bear with their inner ends against the outwardly facing broad sides of the strip conductors 9, 10.
  • the distance between the strip conductors can be set exactly.
  • the ends of the plungers are preferably in turn to the Glued broad sides of the band conductor, with appropriate bias of the resilient strip conductor is possibly sufficient only the application of the ends of the strip conductors for stabilization.
  • the gates 4 and 5 and the gates 6 and 7 are coupled together and the diagonally opposite gates 4 and 6 and 5 and 7 are isolated from each other at the conclusion of each other gates.
  • Fig. 4 shows another embodiment of a directional coupler according to the invention and although only one of the band conductor is bent here and the other band conductor is currently running.
  • a robust test port 20 is mounted, the inner conductor is connected to the straight strip conductor.
  • the opposite end of the straight strip conductor is connected to a Koaxial effetskupplung which is mounted on the opposite end face of the metal housing. The rest of the structure and the support of the band conductor in the housing space is as in Fig. 1st
  • Fig. 4 shows additional ferrite structures 21 which are attached to the longitudinal end walls of the metal housing space for absorbing higher modes along the coupling region.
  • the directional coupler can also be operated when theoretically higher wave modes are capable of propagation at the selected dimensions.
  • the directional coupler according to the invention is particularly well suited for direct integration into a existing assembly, such as an attenuator.
  • additional terminating resistors can be integrated into the directional coupler if a signal is to be coupled out in only one direction.
  • the integration of an attenuator at one or more connection ports is also possible.
  • Such terminating resistors or attenuators can for example be integrated directly into the terminal ends 11, 12 of the strip conductors 9, 10.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Waveguides (AREA)

Abstract

In the case of a directional coupler with two coupled lines (4-7), which are arranged next to one another and at a distance from one another in a flat area (3) of a closed metal housing (1, 2) in the coupling region in the longitudinal direction and whose ends are connected to connection ports fitted laterally on the metal housing (1, 2), these coupled lines comprise flat sheet-metal conductor tracks, which are arranged next to one another at a distance and facing one another with their broad sides in the coupling region and are held by a plurality of supporting elements (13, 14) of insulating material in a freely-supporting manner at a distance from the opposite inner walls of the flat metal housing area (3) in said metal housing area. In this case, at least one conductor track (9, 10), is bent in relation to the opposite conductor tracks in such a way that the distance between the conductor tracks (9, 10) in the coupling region increases approximately exponentially starting from the coupling region start (E1) up to the coupling region end (E2). The width of the two conductor tracks increases in the coupling region.

Description

Richtkoppler directional coupler
Die Erfindung betrifft einen Richtkoppler laut Oberbegriff des Hauptanspruches.The invention relates to a directional coupler according to the preamble of the main claim.
Richtkoppler dieser Art sind beispielsweise aus Meinke/Grundlach, Taschenbuch der Hochfrequenztechnik, 5. Auflage, Seiten L29 bis L34, bekannt. Eine ideale Trennung der vor- und rücklaufenden Wellen ist dabei nur mit Richtkopplern möglich, die eine Ausbreitung von TEM-Wellen ermöglichen. Dies ist bisher nur mit Richtkopplern in Koaxialleitungstechnik möglich. Richtkoppler in Mikrostreifenleitungs- oder Koplanarleitungstechnik ermöglichen keine Ausbreitung von reinen TEM-Wellen. Richtkoppler in Koaxialleitungstechnik sind jedoch im Aufbau relativ aufwendig. Die bezüglich Aufbau einfacheren Richtkoppler in Mikrostreifenleitungs- oder Koplanarleitungstechnik besitzen dagegen den Nachteil, dass sie keine reine TEM-Wellenausbreitung ermöglichen und daher die für die Funktion eines Richtkopplers so wichtigen Phasenkonstanten des Even- und Odd-Modes nicht identisch sind.Directional couplers of this kind are known, for example, from Meinke / Grundlach, Taschenbuch der Hochfrequenztechnik, 5th edition, pages L29 to L34. An ideal separation of the forward and backward waves is possible only with directional couplers, which allow a propagation of TEM waves. So far, this has only been possible with directional couplers in coaxial cable technology. Directional couplers in microstrip line or coplanar line technology do not allow propagation of pure TEM waves. However, directional couplers in coaxial line technology are relatively complex in construction. On the other hand, the simpler directional couplers in microstrip line or coplanar line technology have the disadvantage that they do not permit pure TEM wave propagation and therefore the phase constants of the even and odd modes, which are so important for the function of a directional coupler, are not identical.
Es ist Aufgabe der Erfindung, einen Richtkoppler zu schaffen, bei dem eine reine TEM-Wellenausbreitung möglich ist und der trotzdem eine kompakte und preiswerte Herstellung ermöglicht und der vor allem extrem breitbandig ist.It is an object of the invention to provide a directional coupler, in which a pure TEM wave propagation is possible and still allows a compact and inexpensive production and is especially extremely broadband.
Diese Aufgabe wird ausgehend von einem Richtkoppler laut Oberbegriff des Anspruchs 1 durch dessen kennzeichnende Merkmale gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.This object is achieved on the basis of a directional coupler according to the preamble of claim 1 by its characterizing features. Advantageous developments emerge from the subclaims.
Ein erfindungsgemäßer Richtkoppler kann sehr einfach und preiswert hergestellt werden. Er ist extrem dämpfungsarm und es ist vor allem eine extrem große Bandbreite beispielsweise zwischen 1 GHz und 70 GHz erreichbar.An inventive directional coupler can be made very simple and inexpensive. He is extremely low-loss and above all, an extremely large bandwidth, for example, between 1 GHz and 70 GHz can be achieved.
Die Erfindung wird im folgenden anhand schematischer Zeichnungen an Ausführungsbeispielen näher erläutert.The invention is explained in more detail below with reference to schematic drawings of exemplary embodiments.
Fig. 1 zeigt perspektivisch in Draufsicht einen erfindungsgemäßen Richtkoppler mit abgenommenen Gehäusedeckel ;Fig. 1 shows a perspective plan view of a directional coupler according to the invention with the housing cover removed;
Fig. 2 zeigt einen Schnitt längs der Linie A-A in Fig. 1 in Vergrößerung;Fig. 2 shows a section along the line A-A in Figure 1 in magnification.
Fig. 3 zeigt die Draufsicht auf einen der beiden flachen Blech-Bandleiter und zwar bezüglich derFig. 3 shows the top view of one of the two flat sheet-metal strip conductor and with respect to the
Breite etwa um den Faktor 5 skaliert undWidth scaled by a factor of approximately 5 and
Fig. 4 zeigt in perspektivischer Draufsicht ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Richtkopplers mit einem integrierten massiven Testport und einem geraden durchgehenden und nur einem gebogenen Bandleiter.4 shows a perspective top view of a further embodiment of a directional coupler according to the invention with an integrated massive test port and a straight continuous and only one curved band conductor.
Fig. 1 zeigt in perspektivischer Draufsicht einen erfindungsgemäßen Richtkoppler mit einem flachen Metallgehäuse 1 mit abgenommenem Deckel 2. In der Oberfläche dieses Metallgehäuses 1 ist ein flacher Raum 3 ausgefräst, in den seitlichen zu den Stirnseiten des Metallgehäuses hin offene Anschlussabschnitte münden. Gegenüber diesen Anschlussabschnitten sind an den seitlichen Stirnflächen des Metallgehäuses 1 außen jeweils Koaxialstecker-Kupplungen 4 - 7 befestigt, deren Innenleiter in Anschlussabschnitte des flachen Raums 3 des Metallgehäuses ragen. Dieser flache Metallgehäuseraum 3 ist gemäß Fig. 2 von oben mittels eines flachen Deckels 2 geschlossen und über nicht dargestellte Schrauben (Löcher 8) hochfrequenzdicht mit dem Gehäuse 1 verschraubt. Die vier Koaxialleitungs-Kupplungen 4 bis 7 bilden jeweils die vier Hochfrequenztore des Richtkopplers .Fig. 1 shows a perspective plan view of a directional coupler according to the invention with a flat metal housing 1 with removed cover 2. In the surface of this metal housing 1, a flat space 3 is milled out, in the lateral open to the front sides of the metal housing open connection sections. Opposite these connection sections, coaxial connector couplings 4 - 7 are fastened to the lateral end faces of the metal housing 1, the inner conductors of which project into connecting sections of the flat space 3 of the metal housing. This flat metal housing space 3 is closed as shown in FIG. 2 from above by means of a flat cover 2 and bolted via not shown screws (holes 8) high frequency tight to the housing 1. The four coaxial line couplings 4 to 7 each form the four high-frequency ports of the directional coupler.
Die eigentlichen gekoppelten Leitungen werden durch zwei flache Blech-Bandleiter 9 und 10 gebildet, die imThe actual coupled lines are formed by two flat sheet-metal strip conductors 9 and 10, in the
Koppelbereich zwischen El und E2 mit ihren Breitseiten einander zugewandt im Abstand nebeneinander angeordnet sind.Coupling region between El and E2 with their broad sides facing each other at a distance next to each other are arranged.
Wie Fig. 2 zeigt, sind diese beiden Bandleiter 9 und 10 im Koppelbereich hochkant stehend mit ihren Breitseiten senkrecht zum Boden des Gehäuseraumes 3 und senkrecht zur Innenfläche des aufgesetzten Deckels 2 im Metallgehäuseraum 3 gehalten. An den Enden des Koppelbereichs E1-E2 sind diese flachen Blech-Bandleiter seitlich nach außen gebogen und an den Innenleiterenden der Koaxialleiter-Kupplungen 4 bis 7 befestigt . Diese flachen Bandleiter bestehen aus einem federnd nachgiebigem Blechmaterial, beispielsweise aus Kupferberyllium.As shown in FIG. 2, these two band conductors 9 and 10 are held upright in the coupling region with their broad sides perpendicular to the bottom of the housing space 3 and perpendicular to the inner surface of the attached lid 2 in the metal housing space 3. At the ends of the coupling region E1-E2, these flat sheet metal strip conductors are laterally bent outwards and fastened to the inner conductor ends of the coaxial conductor couplings 4 to 7. These flat band conductors consist of a resilient sheet material, such as copper beryllium.
Fig. 3 zeigt die Draufsicht eines noch nicht abgebogenen Bandleiters. Die Breite ist hier zum besseren Verständnis etwa fünffach vergrößert. Die beiden Anschlussenden 11 und 12, die beim Zusammenbau abgebogen werden, besitzen etwa die gleiche Breite. Der eigentliche Koppelabschnitt zwischen El und E2 besitzt allmählich zunehmende Breite. Am Anfang El des Koppelabschnittes ist die Breite verjüngt und nimmt nur allmählich bis zum Koppelbereichsende E2 wieder zu, bis die Breite des Anschlussendes 12 erreicht ist. Die Breite der Anschlussenden 11 und 12 und der jeweilige Abstand zum Boden des Gehäuseraumes 3 bzw. zur Innenfläche des Deckels 2 sind so gewählt, dass die Anschlussenden jeweils den gleichen Wellenwiderstand wie die anschließenden Koaxialleitungs-Kupplungen besitzen, im allgemeinen 50 Ohm. Die Zunahme der Breite der Bandleiter 9, 10, die in Fig. 3 abschnittsweise erfolgt, ist annähernd linear, sie kann natürlich auch kontinuierlich erfolgen. Die beiden Bandleiter 9 und 10 sind gemäß Fig. 1 im Koppelbereich zwischen El und E2 in einem von El nach E2 etwa exponentiell zunehmenden Abstand voneinander angeordnet. Ihre Stirnseiten sind gemäß Fig. 2 in einem vorbestimmten Abstand gegenüber Deckel undFig. 3 shows the top view of a not yet bent strip conductor. The width is increased here for better understanding about five times. The two terminal ends 11 and 12, which are bent during assembly, have approximately the same width. The actual coupling section between El and E2 has gradually increasing width. At the beginning of the coupling portion El the width is tapered and increases only gradually until the coupling end E2 again until the width of the terminal end 12 is reached. The width of the terminal ends 11 and 12 and the respective distance to the bottom of the housing space 3 and to the inner surface of the lid 2 are chosen so that the terminal ends each have the same characteristic impedance as the subsequent coaxial line couplings, generally 50 ohms. The increase in the width of the strip conductors 9, 10, which takes place in sections in Fig. 3, is approximately linear, it can of course also be continuous. The two strip conductors 9 and 10 are arranged according to FIG. 1 in the coupling region between E1 and E2 in a distance which increases exponentially from E to E2. Their end faces are shown in FIG. 2 at a predetermined distance from the lid and
Gehäuseraumboden gehalten und bilden wiederum ein vorbestimmtes Wellenwiderstandssystem. Dieser etwa exponentielle Verlauf des Abstandes zwischen den beiden Bandleitern beginnend mit der engsten Stelle am Anfang El des Koppelbereichs und der weitesten Stelle am Ende E2 des Koppelbereichs gewährleistet zusammen mit dem in Fig. 3 dargestellten Verlauf der Breite der Bandleiter 9, 10, dass das Produkt aus ZEven und ZOdd an jeder Stelle des Koppelsystems gleich dem Quadrat des Systemwellenwiderstandes, beispielsweise 50 Ohm, ist. Damit ist eine gute Anpassung und Isolation des Richtkopplers gewährleistet.Housing room floor held and in turn form a predetermined characteristic impedance system. This approximately exponential course of the distance between the two strip conductors beginning with the narrowest point at the beginning of the coupling region El and the widest point at the end E2 of the coupling region ensures, together with the course shown in Fig. 3, the width of the band conductor 9, 10 that the product of Z Even and Z Odd at each point of the coupling system is equal to the square of the system wave resistance, for example, 50 ohms. This ensures a good adaptation and isolation of the directional coupler.
Die beiden flachen Blech-Bandleiter 9 und 10 werden im flachen Raum 3 in den vorgegebenen Abständen gegenüber Metallgehäuse 1 und Deckel 2 über Stützelemente aus Isoliermaterial gehalten. Im gezeigten Ausführungsbeispiel nach Fig. 1 sind die vom Koppelbereich E1-E2 jeweils seitlich nach außen gebogenen Anschlussenden 11, 12 jeweils über kleine Kunststoffrollen 13 gehalten, die am Metallgehäuse 1 beispielsweise angeklebt sind und die beidseitig an den Breitseiten der Bandleiter 9, 10 anliegen und vorzugsweise ebenfalls mit den Bandleitern verklebt sind. Im eigentlichen Koppelbereich E1-E2 sind diese Bandleiter 9, 10 über Stößel 14 aus Isoliermaterial gehalten, die längs der Bandleiter im Abstand verteilt sind und in Bohrungen der Längsstirnseiten des Metallgehäuses 1 geführt sind. Diese Stößel 14 liegen mit ihren inneren Enden an den nach außen gewandten Breitseiten der Bandleiter 9, 10 an.The two flat sheet metal strip conductors 9 and 10 are held in the flat space 3 in the predetermined distances from the metal housing 1 and cover 2 via support elements made of insulating material. In the embodiment shown in FIG. 1, each of the coupling region E1-E2 laterally outwardly bent terminal ends 11, 12 each held on small plastic rollers 13 which are glued to the metal housing 1, for example, and the both sides of the broad sides of the band conductor 9, 10 abut and preferably also glued to the strip conductors. In the actual coupling region E1-E2, these strip conductors 9, 10 are held by plungers 14 made of insulating material, which are distributed along the strip conductors at a distance and are guided in bores of the longitudinal end faces of the metal housing 1. These plungers 14 bear with their inner ends against the outwardly facing broad sides of the strip conductors 9, 10.
Durch Axialverschieben dieser Stößel kann der Abstand zwischen den Bandleitern exakt eingestellt werden. Die Enden der Stößel sind vorzugsweise wiederum an den Breitseiten der Bandleiter angeklebt, bei entsprechender Vorspannung der federnd nachgiebigen Bandleiter genügt ggf. auch nur das Anlegen der Enden an den Bandleitern zur Stabilisierung. Bei dem dargestellten Aufbau sind die Tore 4 und 5 sowie die Tore 6 und 7 miteinander verkoppelt und die sich diagonal gegenüberliegenden Tore 4 und 6 sowie 5 und 7 sind bei Abschluss der jeweils anderen Tore voneinander isoliert.By axial displacement of these plungers, the distance between the strip conductors can be set exactly. The ends of the plungers are preferably in turn to the Glued broad sides of the band conductor, with appropriate bias of the resilient strip conductor is possibly sufficient only the application of the ends of the strip conductors for stabilization. In the illustrated construction, the gates 4 and 5 and the gates 6 and 7 are coupled together and the diagonally opposite gates 4 and 6 and 5 and 7 are isolated from each other at the conclusion of each other gates.
Über diese Kunststoffrollen 13 und Stößel 14 werden dieAbout these plastic rollers 13 and plunger 14 are the
Bandleiter 9, 10 in ihrer vorbestimmten Stellung innerhalb des Metallgehäuseraumes 3 fixiert und es wird eine gute mechanische Stabilität erreicht. Eventuelle elektrische Einflüsse dieser Kunststoffteile, beispielsweise der Stößel 14, können durch entsprechende kleineBand conductor 9, 10 fixed in its predetermined position within the metal housing space 3 and it is achieved a good mechanical stability. Any electrical influences of these plastic parts, such as the plunger 14, can by appropriate small
Einschnürungen an den Rändern der Bandleiter 9, 10 kompensiert werden.Constrictions at the edges of the strip conductors 9, 10 are compensated.
Fig. 4 zeigt eine andere Ausführungsform eines erfindungsgemäßen Richtkopplers und zwar ist hier nur einer der Bandleiter gebogen und der andere Bandleiter ist gerade ausgeführt. Am schmalen Stirnende des Metallgehäuses 1 ist ein robuster Testport 20 angebracht, dessen Innenleiter mit dem geraden Bandleiter verbunden ist. Das gegenüberliegende Ende des geraden Bandleiters ist mit einer Koaxialleitungskupplung verbunden, die am gegenüberliegenden stirnseitigen Ende des Metallgehäuses angebracht ist. Der übrige Aufbau und die Halterung der Bandleiter im Gehäuseraum ist wie bei Fig. 1.Fig. 4 shows another embodiment of a directional coupler according to the invention and although only one of the band conductor is bent here and the other band conductor is currently running. At the narrow front end of the metal housing 1, a robust test port 20 is mounted, the inner conductor is connected to the straight strip conductor. The opposite end of the straight strip conductor is connected to a Koaxialleitungskupplung which is mounted on the opposite end face of the metal housing. The rest of the structure and the support of the band conductor in the housing space is as in Fig. 1st
Fig. 4 zeigt zusätzliche Ferritstrukturen 21, die zur Absorbierung von höheren Moden längs des Koppelbereiches an den Längsstirnwänden des Metallgehäuseraumes angebracht sind. Damit kann der Richtkoppler auch noch betrieben werden, wenn theoretisch bei den gewählten Abmessungen schon höhere Wellenmoden ausbreitungsfähig sind.Fig. 4 shows additional ferrite structures 21 which are attached to the longitudinal end walls of the metal housing space for absorbing higher modes along the coupling region. Thus, the directional coupler can also be operated when theoretically higher wave modes are capable of propagation at the selected dimensions.
Die erfindungsgemäße Richtkoppleranordnung eignet sich besonders gut auch zur unmittelbaren Integration in eine bestehende Baugruppe, beispielsweise eine Eichleitung. Außerdem können in den Richtkoppler zusätzliche Abschlusswiderstände integriert werden, wenn nur in einer Richtung ein Signal ausgekoppelt werden soll. Auch die Intergration eines Dämpfungsgliedes an einem oder mehreren Anschlusstoren ist möglich. Solche Abschlusswiderstände bzw. Dämpfungsglieder können beispielsweise unmittelbar in die Anschlussenden 11, 12 der Bandleiter 9, 10 integriert werden. The directional coupler according to the invention is particularly well suited for direct integration into a existing assembly, such as an attenuator. In addition, additional terminating resistors can be integrated into the directional coupler if a signal is to be coupled out in only one direction. The integration of an attenuator at one or more connection ports is also possible. Such terminating resistors or attenuators can for example be integrated directly into the terminal ends 11, 12 of the strip conductors 9, 10.

Claims

Ansprüche claims
1. Richtkoppler mit zwei in einem flachen Gehäuseraum (3) eines geschlossenen Gehäuses (1, 2) im Koppelbereich in1. Directional coupler with two in a flat housing space (3) of a closed housing (1, 2) in the coupling region in
Längsrichtung nebeneinander und im Abstand voneinander angeordneten gekoppelten Leitungen, deren Enden mit seitlich am Gehäuse angebrachten Anschlusstoren (4 - 7) verbunden sind, dadurch gekennzeichnet, dass die gekoppelten Leitungen als flache Blech-Bandleiter (9, 10) ausgebildet sind, die im Koppelbereich (E1-E2) mit ihren Breitseiten einander zugewandt im Abstand nebeneinander angeordnet sind und durch mehrere Stützelemente (13, 14) aus Isoliermaterial freitragend im Abstand von den gegenüberliegenden Innenwänden des flachen Gehäuseraumes (3) in diesem gehalten sind.Longitudinal side by side and spaced-apart coupled lines, the ends of which are connected to the housing laterally attached to the housing ports (4-7), characterized in that the coupled lines are formed as flat sheet metal strip conductors (9, 10) in the coupling region ( E1-E2) with their broad sides facing each other are arranged at a distance next to each other and by a plurality of supporting elements (13, 14) of insulating material cantilevered at a distance from the opposite inner walls of the flat housing space (3) are held in this.
2. Richtkoppler nach Anspruch 1, dadurch gekennzeichnet, dass die Bandleiter (9, 10) im Koppelbereich hochkant stehend mit ihren Breitseiten senkrecht zum Boden und Deckel des flachen Metallgehäuseraumes (3) in diesem gehalten sind.2. Directional coupler according to claim 1, characterized in that the band conductors (9, 10) upright in the coupling region standing with their broad sides perpendicular to the bottom and cover of the flat Metallgehäuseraumes (3) are held in this.
3. Richtkoppler nach Anspruch 1 oder 2, dadurch gekennzeichent, dass mindestens ein Bandleiter (9, 10) in Bezug auf den gegenüberliegenden Bandleiter so gebogen ist, dass der Abstand der Bandleiter im Koppelbereich (E1-E2) beginnend vom Koppelbereichanfang (El) etwa exponentiell bis zum Koppelbereichende (E2) zunimmt.3. Directional coupler according to claim 1 or 2, characterized in that at least one band conductor (9, 10) is bent with respect to the opposite band conductor so that the distance of the band conductor in the coupling region (E1-E2) starting from the coupling region beginning (El) approximately increases exponentially to the coupling region end (E2).
4. Richtkoppler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Breite der beiden Bandleiter (9, 10) an den Anschlussenden (11 ,12) jeweils gleich groß ist und im Koppelbereich beginnend mit einer gegenüber der Anschlussenden-Breite geringeren Breite am Koppelbereichsanfang (El) bis zur Anschlussenden-Breite am Koppelbereichsende (E2) zunimmt.4. Directional coupler according to one of the preceding claims, characterized in that the width of the two strip conductors (9, 10) at the terminal ends (11, 12) is the same size and in the coupling region starting with a relation to the terminal width-width smaller width Coupling range beginning (El) increases to the terminal end width at the coupling end of range (E2).
5. Richtkoppler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bandleiter (9, 10) aus einem federnd nachgiebigen Blech, insbesondere Kupferberyllium bestehen.5. Directional coupler according to one of the preceding claims, characterized in that the band conductors (9, 10) consist of a resilient plate, in particular copper beryllium.
6. Richtkoppler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bandleiter (9, 10) an den Anschlussenden (11, 12) über am Metallgehäuse (1) befestigte Isoliermaterial- Körper (13) gehalten sind.6. Directional coupler according to one of the preceding claims, characterized in that the band conductors (9, 10) at the terminal ends (11, 12) on the metal housing (1) fixed Isoliermaterial- body (13) are held.
7. Richtkoppler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bandleiter (9, 10) im Koppelbereich (El bis E2) durch mehrere in den Längsstirnwänden des Metallgehäuses geführte Stößel (14) aus Isoliermaterial gehalten sind.7. Directional coupler according to one of the preceding claims, characterized in that the band conductors (9, 10) in the coupling region (El to E2) are held by a plurality of guided in the longitudinal end walls of the metal housing plunger (14) made of insulating material.
8. Richtkoppler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Längsstirnwände des Metallgehäuseraumes mit Ferritmaterial belegt sind.8. Directional coupler according to one of the preceding claims, characterized in that the longitudinal end walls of the metal housing space are covered with ferrite material.
9. Richtkoppler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bandleiter (9, 10) am Anfang und Ende des Koppelbereiches jeweils nach außen abgebogen und mit den Innenleitern von seitlich am Metallgehäuse (1) befestigten Koaxialleitungs-Kupplungen (4 - 7, 20) verbunden sind.9. Directional coupler according to one of the preceding claims, characterized in that the band conductors (9, 10) at the beginning and end of the coupling region in each case bent outwards and with the inner conductors of laterally on the metal housing (1) fixed coaxial line couplings (4-7, 20) are connected.
10. Richtkoppler nach einem der vorgehenden Ansprüche, dadurch gekennzeichnet, dass an mindestens einem Anschlussende von mindestens einem der beiden Bandleiter (9, 10) in den Bandleiter ein Abschlusswiderstand und/oder ein Dämpfungsglied integriert ist. 10. Directional coupler according to one of the preceding claims, characterized in that at least one terminal end of at least one of the two strip conductors (9, 10) in the strip conductor, a terminating resistor and / or an attenuator is integrated.
EP07786579A 2006-08-14 2007-08-06 Directional coupler Active EP2052434B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038029A DE102006038029A1 (en) 2006-08-14 2006-08-14 directional coupler
PCT/EP2007/006936 WO2008019777A1 (en) 2006-08-14 2007-08-06 Directional coupler

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EP2052434A1 true EP2052434A1 (en) 2009-04-29
EP2052434B1 EP2052434B1 (en) 2009-10-14

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EP (1) EP2052434B1 (en)
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WO (1) WO2008019777A1 (en)

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EP2339691B1 (en) * 2009-12-15 2019-02-20 Alcatel Lucent Physically non-uniform TEM-mode directional coupler
EP3147995B1 (en) * 2015-09-25 2018-04-11 Rohde & Schwarz GmbH & Co. KG Power directional coupler, combiner and method for manufacturing

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WO2008019777A1 (en) 2008-02-21
EP2052434B1 (en) 2009-10-14
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US7859361B2 (en) 2010-12-28
DE502007001760D1 (en) 2009-11-26

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