EP2052434B1 - Coupleur directif - Google Patents

Coupleur directif Download PDF

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Publication number
EP2052434B1
EP2052434B1 EP07786579A EP07786579A EP2052434B1 EP 2052434 B1 EP2052434 B1 EP 2052434B1 EP 07786579 A EP07786579 A EP 07786579A EP 07786579 A EP07786579 A EP 07786579A EP 2052434 B1 EP2052434 B1 EP 2052434B1
Authority
EP
European Patent Office
Prior art keywords
housing
coupling region
directional coupler
strip conductors
coupler according
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.)
Active
Application number
EP07786579A
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German (de)
English (en)
Other versions
EP2052434A1 (fr
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/fr
Application granted granted Critical
Publication of EP2052434B1 publication Critical patent/EP2052434B1/fr
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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 type are, for example, from Meinke / Grundlach, paperback of high frequency technology, 5th edition, pages L29 to L34, and EP-A1-1 503 447 known.
  • An ideal separation of the forward and backward waves is only possible with directional couplers that 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 in 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 according to Fig. 2 closed from above by means of a flat lid 2 and screwed high-frequency-tight manner with the housing 1 via screws (holes 8), not shown.
  • 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, which are arranged in the coupling region between E1 and E2 with their broad sides facing each other at a distance next to each other.
  • these two band conductors 9 and 10 are upright in the coupling region standing with their broad sides perpendicular to the bottom of the housing space 3 and held 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 E1 and E2 has gradually increasing width.
  • the width is tapered and increases only gradually until the coupling end E2, 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 in Fig. 3 is done in sections, is approximately linear, it can of course also be continuous.
  • 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. 1 ,
  • 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)

Claims (9)

  1. Coupleur directif comprenant deux conducteurs couplés, qui sont agencés dans un espace de boitier (3) de configuration plate d'un boitier fermé (1, 2), en étant placés côte à côte dans la direction longitudinale et à distance l'un de l'autre dans la zone de couplage, et dont les extrémités sont reliées à des bornes de raccordement (4 - 7) placées latéralement sur le boitier,
    les conducteurs couplés étant réalisés sous la forme de rubans conducteurs plats en tôle (9, 10), qui, dans la zone de couplage (E1-E2), sont agencés côte à côte de manière espacée, avec leurs faces de grande largeur dirigées l'une vers l'autre, et sont maintenus dans l'espace de boitier (3) de configuration plate par plusieurs éléments de support (13, 14) en matériau isolant, en porte-à-faux, à distance des parois intérieures mutuellement opposées de cet espace de boitier,
    caractérisé en ce que dans la zone de couplage (E1 à E2), les rubans conducteurs (9, 10) sont supportés chacun par plusieurs éléments de support (14) en matériau isolant, guidés dans les parois frontales longitudinales du boitier,
    les extrémités des éléments de support (14) étant fixées sur les faces de grande largeur des rubans conducteurs en tôle (9, 10).
  2. Coupleur directif selon la revendication 1, caractérisé en ce que le boitier est un boitier métallique, et en ce que, dans la zone de couplage, les rubans conducteurs (9, 10) sont maintenus dans l'espace de boitier métallique (3) de configuration plate, en y étant placés de chant avec les faces de grande largeur perpendiculaires au fond (1) et au couvercle (2) dudit espace de boitier métallique plat.
  3. Coupleur directif selon la revendication 1 ou la revendication 2,
    caractérisé en ce qu'au moins un ruban conducteur (9, 10) est cintré par rapport au ruban conducteur opposé de façon telle, que la distance d'espacement des rubans conducteurs dans la zone de couplage (E1-E2) augmente à partir du début de zone de couplage (E1), sensiblement de manière exponentielle jusqu'à la fin de la zone de couplage (E2).
  4. Coupleur directif selon l'une des revendications précédentes,
    caractérisé en ce que la largeur de chacun des deux rubans conducteurs (9, 10) aux extrémités de raccordement (11, 12) est respectivement identique, et, dans la zone de couplage, la largeur augmente en débutant au niveau du début de zone de couplage (E1) par une largeur plus faible que la largeur d'extrémité de raccordement, pour atteindre la largeur d'extrémité de raccordement au niveau de la fin de zone de couplage (E2).
  5. Coupleur directif selon l'une des revendications précédentes,
    caractérisé en ce que les rubans conducteurs (9, 10) sont réalisés en une tôle à souplesse élastique, notamment en cuivre-béryllium.
  6. Coupleur directif selon l'une des revendications précédentes,
    caractérisé en ce que le boitier est un boitier métallique, et en ce que les rubans conducteurs (9, 10) sont maintenus aux extrémités de raccordement (11, 12) par l'intermédiaire de corps (13) en matériau isolant, qui sont fixés au boitier métallique (1).
  7. Coupleur directif selon l'une des revendications précédentes,
    caractérisé en ce que le boitier est un boitier métallique, et en ce que les parois frontales longitudinales de l'espace de boitier métallique sont revêtues d'un matériau de ferrite (21).
  8. Coupleur directif selon l'une des revendications précédentes,
    caractérisé en ce que le boitier est un boitier métallique, et en ce que les rubans conducteurs (9, 10) sont coudés respectivement vers l'extérieur au début et à la fin de la zone de couplage, et sont reliés aux conducteurs intérieurs de connecteurs coaxiaux (4-7, 20) fixés latéralement sur le boitier métallique (1).
  9. Coupleur directif selon l'une des revendications précédentes,
    caractérisé en ce qu'une résistance formant charge et/ou un organe d'atténuation est/sont intégrés dans le ruban conducteur au niveau d'au moins une extrémité de raccordement d'au moins un des deux rubans conducteurs (9, 10).
EP07786579A 2006-08-14 2007-08-06 Coupleur directif Active EP2052434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038029A DE102006038029A1 (de) 2006-08-14 2006-08-14 Richtkoppler
PCT/EP2007/006936 WO2008019777A1 (fr) 2006-08-14 2007-08-06 Coupleur directif

Publications (2)

Publication Number Publication Date
EP2052434A1 EP2052434A1 (fr) 2009-04-29
EP2052434B1 true EP2052434B1 (fr) 2009-10-14

Family

ID=38561939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07786579A Active EP2052434B1 (fr) 2006-08-14 2007-08-06 Coupleur directif

Country Status (4)

Country Link
US (1) US7859361B2 (fr)
EP (1) EP2052434B1 (fr)
DE (2) DE102006038029A1 (fr)
WO (1) WO2008019777A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051370A1 (de) 2009-06-04 2010-12-09 Rohde & Schwarz Gmbh & Co Kg Messkoppler in Bandleitertechnik
EP2339691B1 (fr) * 2009-12-15 2019-02-20 Alcatel Lucent Coupleur directionnel à mode TEM non uniforme physiquement
EP3147995B1 (fr) * 2015-09-25 2018-04-11 Rohde & Schwarz GmbH & Co. KG Coupleur directionnel de puissance, combineur et procédé de fabrication

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183145B (de) 1963-03-15 1964-12-10 Siemens Ag Richtungskoppler
US3390356A (en) * 1965-07-30 1968-06-25 Hewlett Packard Co Tem mode coupler having an exponentially varying coefficient of coupling
GB1168811A (en) * 1966-10-19 1969-10-29 Koepenick Funkwerk Veb Improvements in and relating to Broad Band Coupling Arrangements for High Frequency Signals
DE2434144C3 (de) * 1974-07-16 1980-03-13 Georg Dipl.-Ing. Dr.-Ing. 8152 Feldkirchen-Westerham Spinner Koaxialer Richtungskoppler mit einstellbarer Koppeldämpfung
DE2946989C3 (de) * 1979-11-21 1982-04-01 Georg Dipl.-Ing. Dr.-Ing. 8152 Feldkirchen-Westerham Spinner Koaxialer Richtungskoppler
US4459568A (en) * 1982-02-02 1984-07-10 Rockwell International Corporation Air-stripline overlay hybrid coupler
US4539534A (en) * 1983-02-23 1985-09-03 Hughes Aircraft Company Square conductor coaxial coupler
US4635006A (en) * 1984-12-18 1987-01-06 Rca Corporation Adjustable waveguide branch directional coupler
US5539148A (en) * 1992-09-11 1996-07-23 Uniden Corporation Electronic apparatus case having an electro-magnetic wave shielding structure
US6590472B2 (en) * 2001-08-17 2003-07-08 Harris Corporation Surface mounted broadside directional coupler
US7002433B2 (en) * 2003-02-14 2006-02-21 Microlab/Fxr Microwave coupler
ATE304739T1 (de) * 2003-07-31 2005-09-15 Cit Alcatel Richtkoppler mit einem einstellmittel

Also Published As

Publication number Publication date
DE102006038029A1 (de) 2008-02-21
WO2008019777A1 (fr) 2008-02-21
US20090206947A1 (en) 2009-08-20
US7859361B2 (en) 2010-12-28
EP2052434A1 (fr) 2009-04-29
DE502007001760D1 (de) 2009-11-26

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