EP3001515B1 - Boitier hf avec connecteur a fiches hf coaxial - Google Patents

Boitier hf avec connecteur a fiches hf coaxial Download PDF

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Publication number
EP3001515B1
EP3001515B1 EP15002327.3A EP15002327A EP3001515B1 EP 3001515 B1 EP3001515 B1 EP 3001515B1 EP 15002327 A EP15002327 A EP 15002327A EP 3001515 B1 EP3001515 B1 EP 3001515B1
Authority
EP
European Patent Office
Prior art keywords
coaxial
housing
plug
connector
connection
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
EP15002327.3A
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German (de)
English (en)
Other versions
EP3001515A1 (fr
Inventor
Torben Baras
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.)
Hensoldt Sensors GmbH
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Hensoldt Sensors GmbH
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Publication date
Application filed by Hensoldt Sensors GmbH filed Critical Hensoldt Sensors GmbH
Publication of EP3001515A1 publication Critical patent/EP3001515A1/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/52—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted in or to a panel or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/42—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
    • H01R24/44—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches comprising impedance matching means

Definitions

  • the invention relates to an RF housing with coaxial RF connector for connecting a coaxial RF line to the RF housing according to the preamble of claim 1.
  • the invention generally falls within the field of high frequency signal transmission via coaxial connectors and cables.
  • the signal transmission between high-frequency modules is usually realized via corresponding cable connections via screwed connectors.
  • coaxial plug-in connectors are commonly used, which optimally have low signal reflections at the transition points between cable and plug connector as well as plug connectors and module housings.
  • FIG Fig. 1 An exemplary prior art transition is in the exploded view of FIG Fig. 1 shown in cross section. It shows a coaxial RF connector 100 with inner conductor 102 and outer conductor 101 for connection to a housing 300.
  • the connection element 200 likewise has inner 202 and outer conductor 201.
  • the space between inner conductor 202 and outer conductor 201 is filled with a glass material to ensure gas tightness.
  • the coaxial plug connector 100 is placed centered over the inner conductor 202 of the connection element 200.
  • the inner conductor 102 of the connector 100 has at its end via a corresponding spring contact ("tulip").
  • a discontinuity in the waveguide in the area between the connector and the housing Due to tolerances in the manufacturing processes of the components involved, there is a discontinuity in the waveguide in the area between the connector and the housing. This is from the enlarged view of the transition region according to Fig. 2 clearly visible.
  • the tulip is usually reset a small distance ⁇ 1 (relative to the outer conductor 101) in order not to be able to touch down.
  • the connection element 200 is inserted deeper into the housing 300 by a certain distance .DELTA.2 so as not to protrude.
  • This structure causes the capacitance of the waveguide to decrease in a short section, increasing the impedance of the line.
  • the impedance mismatch occurs, in particular in the range above 20 GHz to significant reflections that can be for the operation of the high-frequency package of disadvantage.
  • the US 4,737,123 A describes an RF housing with coaxial RF connector for connecting a coaxial RF line to the RF housing. Between the connector and the RF housing is a the electrical contact mediating resilient element, each with a flange for contacting HF housing or HF housing available.
  • the resilient design by means of the two flanges allows a secure contact even at changed temperatures.
  • the invention has for its object to improve the known structure for connecting a coaxial RF line to an RF housing such that the described impedance jump at the transition and the associated reflections are reduced.
  • a compensation element This is designed such that it extends at least in a circumferential angle range ⁇ 360 ° of the coaxial RF connector in the radial direction in the direction of the inner conductor towards as the outer conductor of the connector.
  • the compensation element does not touch the inner conductor.
  • the compensation element ensures that the outer conductor of the connector is brought closer to the inner conductor in the region of the transition. As a result of this measure, the capacity cover increases locally in the transition area, so that the discontinuity and the associated references can be reduced. As a result, the impedance of the waveguide in the transition region will differ as little as possible from the standard value (50 ohms or 75 ohms) of the line impedance.
  • the shape of the compensation element can be varied to a large extent, as far as the above basic rule is observed.
  • the compensation element is designed as a sheet-like element with an opening for the inner conductor.
  • the aperture can be made circular in an advantageous embodiment similar to the circular structure of the coaxial connector and arranged concentrically.
  • the compensation element of the invention can be easily and inexpensively made of a thin metal sheet. It offers here passivated steel, since a variety of connectors is also made of this material. It is also possible to apply any other type of surface coating, such as electroplated gold, to a dielectric base material as needed.
  • Another advantage of the invention is the fact that the inventive use of the compensation element does not require a modification of the other components involved.
  • the invention is by no means limited to the above-mentioned gastight connection elements. If no hermetic termination of the housing is desired, a Teflon-based termination may be used instead of a glass material.
  • the compensation element is expediently attached to the housing before mounting the plug.
  • the 3 and 4 show the exploded view of a coaxial RF connector 10 in hermetically sealed housings according to the invention.
  • a coaxial connector 200 is soldered, which allows a hermetic closure of the housing.
  • the compensation element 400 according to the invention is present.
  • the latter is here designed as a thin metal sheet with a circular opening 401, which is positioned concentrically to the coaxial conductor structure.
  • the diameter of the circular aperture 401 of the compensation element 400 is chosen to be smaller than the inner diameter of the outer conductor 101 of the connector 100.
  • the inner diameter of the outer conductor 201 of the connection element 200 depends in particular on the dielectric constant of the material present between the inner conductor 202 and the outer conductor 201. When in the 3 and 4 In the embodiment shown, the inner diameters of the outer conductors of connection element 200 and plug connector 100 are approximately equal. It should be noted, however, that also embodiments with different inner diameters are according to the invention, since the effect of the compensation element according to the invention is also effective in such configurations.
  • Fig. 5 shows the RF connector according to the invention in a further embodiment in 3D representation.
  • the flat compensation element 400 is placed, wherein the inner conductor 202 of the connector is inserted through the circular opening 401 of the compensation element 400.
  • Connecting the coaxial connector 100 is applied by mating the inner conductor and with attached to the housing by means of two screw 105.
  • the connector 100 which forms one end of the coaxial line to be connected to the housing 300, may either be integral with the coaxial line or may be detachably connected thereto.
  • Fig. 6 shows a field of individual compensation elements 400, which are machined out of the same sheet by means of an etching process. Since the elements typically have only small dimensions, a large amount of such compensation elements can be obtained from a single sheet. A cost-effective, based on standard processes manufacturing is thus possible.
  • Fig. 7 shows four different designs for the design of the compensation element 400, in each case with respect to the cross section of the inner conductor of the connection element and outer conductor of the connector.
  • the position of the inner circumference of the outer conductor 101 of the connector and of the outer circumference of the inner conductor 202 of the connecting element is shown, as they appear in side view in the axial direction.
  • the execution according to a) corresponds to the in the Fig. 3 to 6 shown embodiments, ie circular aperture 401 in the compensation element 400, concentrically positioned to the structure of the coaxial line.
  • the embodiment according to b) shows a compensation element with an opening in the form of a triangle.
  • precisely one such circumferential angle range is provided present, which is exactly 360 °.
  • the embodiment according to c) again shows a circular opening in the compensation element, however, the circle is arranged eccentrically to the structure of the coaxial line. This results in a circumferential angle range ⁇ of more than 180 °, within which the compensation element 400 is closer to the center in the radial direction than the outer conductor 101.
  • the embodiment according to d) shows a compensation element 400, which in a large circumferential angle range has a circular profile with a radius greater than the inner diameter of the outer conductor 101, and deviates only in a small circumferential angular range of the circular course, within which there is a bulge in the direction has the center.
  • a circumferential angular range ⁇ results within which the compensation element 400 is located closer to the center in the radial direction than the outer conductor 101.
  • Fig. 8 the course of the input reflection factor over the frequency is shown, with (curve 12) and without compensation element (dashed curve 11). It can be seen clearly that the input reflection factor in the range of 20 GHz is significantly improved by the measure according to the invention.
  • Fig. 9 shows the simulation result in the time domain for the same back-to-back configuration. Shown is the course of the impedance over time. The goal is to keep the impedance curve as constant as possible in the range of the standard amount of 50 ohms. The smaller the deviation from this value over time, the better the matching over all frequencies.
  • the impedance curve of the uncompensated structure shows significant inductive peaks in the range of 55 ps and 250 ps to over 52 ohms, each associated with a transition.
  • the tips are significantly reduced, as in Fig. 9 can be seen in the course of the curve 13.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (5)

  1. Boîtier HF muni d'une connexion HF coaxiale (10) destinée au raccordement d'une ligne coaxiale au boîtier HF (300),
    comprenant :
    - un connecteur à enficher coaxial (100) formant l'extrémité de la ligne HF, doté d'un conducteur interne (102) et d'un conducteur externe (101),
    - une pièce de raccordement coaxiale (200) disposée dans l'ouverture du boîtier (300), dont le conducteur interne (202) est inséré dans le conducteur interne (102) du connecteur à enficher coaxial (100),
    - un élément de compensation (400) étant disposé entre le connecteur à enficher coaxial (100) et le boîtier (300) et de manière adjacente à celui-ci qui, dans au moins une plage d'angles solides ≤ 360° de la connexion HF coaxiale (10), s'étend dans la direction radiale en direction plus loin dans la direction du conducteur interne (202) que le conducteur externe (101) du connecteur à enficher (100) et sans toucher le conducteur interne (202),
    - l'élément de compensation (400) possédant une traversée (401) pour le conducteur interne (202),
    - l'élément de compensation (400) permettant de réduire un saut d'impédance au niveau de la transition entre le connecteur à enficher et le boîtier et les réflexions qui y sont liées,
    caractérisé en ce que l'élément de compensation (400) est de configuration plate.
  2. Boîtier HF muni d'une connexion HF coaxiale (10) selon la revendication 1, caractérisé en ce que la traversée (401) est de forme circulaire et disposée de manière concentrique par rapport à la structure de la connexion HF coaxiale.
  3. Boîtier HF muni d'une connexion HF coaxiale (10) selon l'une des revendications précédentes, caractérisé en ce que l'élément de compensation (400) se compose d'un matériau conducteur ou d'un matériau non conducteur qui possède un revêtement conducteur.
  4. Boîtier HF muni d'une connexion HF coaxiale (10) selon l'une des revendications précédentes, caractérisé en ce qu'au niveau de la pièce de raccordement coaxiale (200), la zone d'espace entre le conducteur interne (202) et le conducteur externe (201) est rempli d'un matériau solide diélectrique, notamment d'un verre.
  5. Boîtier HF muni d'une connexion HF coaxiale (10) selon l'une des revendications précédentes, caractérisé en ce que la pièce de raccordement (200) est reliée au boîtier avec étanchéité aux gaz et à l'humidité.
EP15002327.3A 2014-09-27 2015-08-04 Boitier hf avec connecteur a fiches hf coaxial Active EP3001515B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014014472.0A DE102014014472A1 (de) 2014-09-27 2014-09-27 Koaxiale HF-Steckverbindung

Publications (2)

Publication Number Publication Date
EP3001515A1 EP3001515A1 (fr) 2016-03-30
EP3001515B1 true EP3001515B1 (fr) 2018-10-10

Family

ID=53783020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15002327.3A Active EP3001515B1 (fr) 2014-09-27 2015-08-04 Boitier hf avec connecteur a fiches hf coaxial

Country Status (3)

Country Link
EP (1) EP3001515B1 (fr)
DE (1) DE102014014472A1 (fr)
ES (1) ES2711126T3 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737123A (en) * 1987-04-15 1988-04-12 Watkins-Johnson Company Connector assembly for packaged microwave integrated circuits
US4815986A (en) * 1987-08-14 1989-03-28 Lucas Weinschel, Inc. Self-aligning blind mate connector

Also Published As

Publication number Publication date
EP3001515A1 (fr) 2016-03-30
ES2711126T3 (es) 2019-04-30
DE102014014472A1 (de) 2016-03-31

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