DE2335778A1 - Coaxial 3dB directional coupler for selected band - uses adjustable capacitors with quarter wavelength inner conductor coupling - Google Patents

Coaxial 3dB directional coupler for selected band - uses adjustable capacitors with quarter wavelength inner conductor coupling

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Publication number
DE2335778A1
DE2335778A1 DE19732335778 DE2335778A DE2335778A1 DE 2335778 A1 DE2335778 A1 DE 2335778A1 DE 19732335778 DE19732335778 DE 19732335778 DE 2335778 A DE2335778 A DE 2335778A DE 2335778 A1 DE2335778 A1 DE 2335778A1
Authority
DE
Germany
Prior art keywords
directional coupler
quarter wavelength
coaxial
inner conductor
coupling
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.)
Pending
Application number
DE19732335778
Other languages
German (de)
Inventor
Georg Dr Ing Spinner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19732335778 priority Critical patent/DE2335778A1/en
Publication of DE2335778A1 publication Critical patent/DE2335778A1/en
Pending legal-status Critical Current

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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
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

For the 3dB directional coupler the variable capacitors are arranged at both ends of the two parallel inner conductors acting as coupling wires of quarter wavelength and are inside a common outer conductor. The parallel wires end in four coaxial connections. The two capacitors can be adjusted together via a gear unti either synonymous or opposing in sense. The capacitor metal plates which can be wedge shaped are held by insulators which can be turned.

Description

Dr.-Ing. Georg Spinner, 8 München 2, ErzgießereistrDr.-Ing. Georg Spinner, 8 Munich 2, Erzgießereistr

Ri chtungskopplerDirectional coupler

Die Erfindung betrifft einen Richtungskoppler insbesondere mit j5dB Koppeldämpfung. Bei derartigen Rxchtungskopplern ist die genaue Einhaltung der Koppeldämpfung in einem bestimmten Frequenzbereich oder bei einer bestimmten Frequenz, wenn der Richtungskoppler in Brückenschaltungen verwendet werden soll, von großer Wichtigkeit.The invention relates to a directional coupler, in particular with a coupling attenuation of j5dB. In such directional couplers, the exact compliance with the coupling attenuation in a certain frequency range or at a certain frequency if the directional coupler is used to be used in bridge circuits is of great importance.

Der Erfindung liegt die Aufgabe zugrunde, diese Koppeldämpfung auf einfachste Weise einstellbar zu machen.The invention is based on the object of making this coupling attenuation adjustable in the simplest possible way.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß an beiden Enden der Koppelleitungslänge je eine einstellbare Kapazität angebracht ist, die eine zusätzliche Kopplung ermöglicht und ohne Rückwirkung auf die Richtwirkung und die sonstigen Phasenverhältnisse des Kopplers eine geringfügige, aber ausreichende Änderung der Koppeldämpfung ermöglicht. Bei einem Richtungskoppler mit %/K Koppelleitungslänge sind die Kapazitäten demgemäß im Abstand von .2/4 angebracht. Die beiden Kapazitäten können mittels eines gemeinsamen Einstelltriebes verändert werden und zwar entweder gleichsinnig oder gegensinnig.According to the invention, this object is achieved in that an adjustable capacitance is attached to each end of the coupling line, which enables additional coupling and allows a slight but sufficient change in coupling attenuation without affecting the directional effect and the other phase relationships of the coupler. In the case of a directional coupler with% / K coupling line length, the capacitances are accordingly placed at a distance of .2 / 4. The two capacities can be changed by means of a common adjustment drive, either in the same direction or in opposite directions.

Gemäß einer Ausführungsform der Erfindung werden die Kapazitäten von Metallstücken gebildet, welche an Isolierstoffschiebern sitzen, die mehr oder weniger weit zwischen die Enden des Kopplers ein-According to one embodiment of the invention, the capacities are formed by pieces of metal that sit on insulating material slides, which are more or less far between the ends of the coupler

409886/0578409886/0578

schiebbar sind. Dabei können die Metallstücke auch keilförmig ausgebildet sein.are slidable. The metal pieces can also be wedge-shaped.

Die Änderung der Kapazität kann auch dadurch vorgenommen werden, daß zwei Teller von beiden Seiten her im Abzweigpunkt genähert oder von diesem entfernt v/erden.The capacity can also be changed by bringing two plates closer to the branch point from both sides or ground away from it.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben. In der Zeichnung zeigen:An exemplary embodiment of the invention is described below with reference to the drawing. In the drawing show:

Fig. 1 eine schematische Ansicht eines erfindungsgeuiäß ausgebildeten Richtungskopplers,Fig. 1 is a schematic view of a erfindungsgeuiäß trained Directional coupler,

Fig. 2 eine Ansicht des Richtungskopplers mit vastellbaren Kondensatorplatten. 2 shows a view of the directional coupler with adjustable capacitor plates.

In den beiden schematischen Darstellungen ist der Außenleiter des mit vier Anschlüssen versehenen j5dB Richtungskopplers mit 10 bezeichnet. Die Innenleiter 12,14 sind über die Koppellänge /£/4 parallel zueinander geführt und enden in den Anschlüssen 16 der abzweigenden Außenleiterarme 18. Zwischen den im Abstand von /i-/4 liegenden Enden der beiden Koppelleitungen 12 sind, wie in Fig.l schematisch angedeutet, Stellkapazitaten 20 vorgesehen. Diese Stellkapazitaten 20 können, wie aus Fig.2 ersichtlich, aus Platten 22 bestehen, die über ein geeignetes Getriebe gegensinnig oder gleichsinnig verstellbar sind.In the two schematic representations, the outer conductor of the j5dB directional coupler, which is provided with four connections, is denoted by 10. The inner conductors 12, 14 are over the coupling length / £ / 4 run parallel to one another and end in the connections 16 of the branching outer conductor arms 18. Between the at a distance of / i- / 4 Lying ends of the two coupling lines 12 are, as indicated schematically in Fig.l, provided adjusting capacities 20. These Adjustment capacities 20 can, as can be seen from Figure 2, from plates 22 exist, which are adjustable in opposite directions or in the same direction via a suitable gear.

PatentansprücheClaims

409886/0578409886/0578

Claims (6)

Patentansprüche :Patent claims: * Richtungskoppler, insbesondere mit 3dB Koppeldämpfung, dadurch ■gekennzeichnet , daß an beiden Enden der Koppelleitung (12) variable Kapazitäten (20) angeordnet sind.* Directional coupler, especially with 3 dB coupling loss, thereby ■ characterized that at both ends of the coupling line (12) variable capacities (20) are arranged. 2. Richtungskoppler nach Anspruch 1, dadurch gekennzeichnet , daß die beiden Kapazitäten über ein Getriebe gemeinsam,gleichsinnig oder gegensinnig betätigbar sind.2. Directional coupler according to claim 1, characterized in that the two capacitances via a transmission together, in the same direction or can be operated in opposite directions. 3. Richtungskoppler nach Anspruch 1, dadurch gekennzei chnet , daß die Kapazitäten durch an Isolierstoff befestigte Metallstücke (22) gebildet werden, die zwischen die Enden des Kopplers einschiebbar sind.3. Directional coupler according to claim 1, characterized gekennzei chnet that the capacitances by metal pieces attached to insulating material (22) are formed, which can be pushed between the ends of the coupler. 4. Richtungskoppler nach Anspruch 3, dadurch gekennzeichnet, daß die Metallstücke keilförmig ausgebildet sind.4. Directional coupler according to claim 3, characterized in that that the metal pieces are wedge-shaped. 5. Richtungskoppler nach Anspruch 3* dadurch gekennzei chnet, daß die Metallteile drehbar auf einer Achse befestigt sind.5. Directional coupler according to claim 3 * thereby gekennzei chnet that the metal parts are rotatably mounted on an axis. 6. Richtungskoppler nach Anspruch 3> dadurch gekennzeichnet, daß zwei Teller von beiden Seiten dem Abzweigpunkt genähert werden können.6. Directional coupler according to claim 3> characterized in that two plates approach the branch point from both sides can be. 409886/0 578409886/0 578 LeerseiteBlank page
DE19732335778 1973-07-13 1973-07-13 Coaxial 3dB directional coupler for selected band - uses adjustable capacitors with quarter wavelength inner conductor coupling Pending DE2335778A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19732335778 DE2335778A1 (en) 1973-07-13 1973-07-13 Coaxial 3dB directional coupler for selected band - uses adjustable capacitors with quarter wavelength inner conductor coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732335778 DE2335778A1 (en) 1973-07-13 1973-07-13 Coaxial 3dB directional coupler for selected band - uses adjustable capacitors with quarter wavelength inner conductor coupling

Publications (1)

Publication Number Publication Date
DE2335778A1 true DE2335778A1 (en) 1975-02-06

Family

ID=5886856

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732335778 Pending DE2335778A1 (en) 1973-07-13 1973-07-13 Coaxial 3dB directional coupler for selected band - uses adjustable capacitors with quarter wavelength inner conductor coupling

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Country Link
DE (1) DE2335778A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139827A (en) * 1977-02-16 1979-02-13 Krytar High directivity TEM mode strip line coupler and method of making same
DE3228993A1 (en) * 1982-08-03 1984-02-09 Siemens AG, 1000 Berlin und 8000 München Microwave/microstrip/multi-conductor system, consisting of n parallel strip conductors
US9929722B1 (en) 2017-01-30 2018-03-27 International Business Machines Corporation Wire capacitor for transmitting AC signals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139827A (en) * 1977-02-16 1979-02-13 Krytar High directivity TEM mode strip line coupler and method of making same
DE3228993A1 (en) * 1982-08-03 1984-02-09 Siemens AG, 1000 Berlin und 8000 München Microwave/microstrip/multi-conductor system, consisting of n parallel strip conductors
US9929722B1 (en) 2017-01-30 2018-03-27 International Business Machines Corporation Wire capacitor for transmitting AC signals

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