Connector for high frequency transmission in the automotive field, impedance improvement element, connection assembly, method for improving impedance of a connector

Abstract

To provide a solution capable of achieving mass production of connectors that are suitable for high-frequency transmissions in the automobile field.SOLUTION: A connector (10) includes a contact element (11) arranged in an interior of the connector (10). The contact element (11) is adapted to make contact to an electrical connection element (20) like a cable (40) or a mating connector. The connector (10) further includes an impedance improving element 50 located at a side of the electrical connection element (20). The impedance improving element (50) includes a reception channel (51) through which the contact element (11) extends and a deformation section (52) adapted to be deformed, at least one of radially or axially. Further, a connection assembly (300) including the connector (10) and the cable (40) attached to the connector (10) is disclosed. The deformation section (52) seals and / or holds a dielectric insulation (42) of the cable (40).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a connector for high frequency transmission in the automotive field, an impedance improvement element, a connection assembly and a method for improving the impedance of a connector. [Background technology]

[0002] Connectors used in the automotive field are mass-produced. In recent years, it has become desirable to transmit data at high speeds, and therefore at high frequencies. However, current connectors suitable for high frequency transmission are difficult and expensive to produce, and therefore not suitable for the automotive field. Summary of the Invention [Problem to be solved by the invention]

[0003] The object of the present invention is to provide a solution which allows the mass production of connectors suitable for high-frequency transmission, in particular in the automotive sector. [Means for solving the problem]

[0004] According to the invention, this is achieved by a connector for high frequency transmission in the automotive field, which comprises at least one contact element arranged inside the connector, the at least one contact element being adapted to contact an electrical connection element such as a cable or a mating connector, and the connector further comprises an impedance improving element located on the side of the electrical connection element, the impedance improving element comprising a receiving channel through which the at least one contact element extends and a deformation portion adapted to deform in at least one of a radial direction or an axial direction.

[0005] The impedance improving element according to the present invention is adapted to be used in a connector according to the present invention.

[0006] A connection assembly according to the invention comprises a connector according to the invention.

[0007] This object is further achieved by a method for improving the impedance of a connector having a contact element, in which an impedance improving element is used, the element comprising a receiving channel for the contact element and a deformation portion adapted to deform.

[0008] The solution according to the invention can be further improved by the following further developments and advantageous embodiments, which are independent of one another and can be combined in any way if desired.

[0009] The impedance improving element may be located between a mounting portion where the contact element is mounted to the housing of the connector and an end of the at least one contact element, the end configured to connect to the electrical connection element, thereby optimizing the impedance improving effect.

[0010] For example, the impedance improving element can be located between the cable and the mounting portion, or can be located between the mating connector and the mounting portion.

[0011] In a simple configuration, the deformation portion can be made of a foam material. Such a material can be easily deformable. The foam material can be an open-cell or closed-cell foam material.

[0012] Advantageously, the impedance improving element may be made from a dielectric material, which may for example consist of a plastic, allowing for easy formation.

[0013] In a further development, the impedance improving element can be made of a conductive material. In particular, the impedance improving element can consist of a conductive material. The conductive material can be, for example, a metal or a material made of a metal, for example a hybrid material made of a dielectric material and a conductive network within the dielectric material.

[0014] The deformation portion may be elastically deformable to allow repeated use of the impedance improving element.

[0015] Alternatively, the deformations may be plastically deformable, which may allow for a stable configuration.

[0016] In an advantageous development, the deformation can consist of a heat-shrinkable material, which can improve the manufacturing process, since such a material can be applied in a non-shrinkable state and then shrunk by applying heat.

[0017] In a first advantageous development, the impedance improving element is located proximal to the connector adapted for connection to the cable and comprises a receptacle for a dielectric insulation of the cable, the deformation portion being adapted to deform radially, such a development makes it possible to improve the impedance of the transition between the cable and the connector.

[0018] The connector can include a crimp and the impedance-improving element can be located in the crimp, for example, if the crimp is circumferentially closed, e.g., if the crimp is cylindrical, the impedance-improving element can be located in a space defined by the crimp.

[0019] The crimping portion may be at least partially plastically deformable in the radial direction. The crimping portion may be constructed, for example, from a metal that is deformable by a crimping tool. The amount that the crimping portion deforms may be controlled and tuned to a desired impedance.

[0020] The impedance improving element can be attached to the shielding element of the connector. The electrical connection element can then be easily inserted into the connector, thus simplifying manufacturing.

[0021] The impedance improving element may be attached to the shielding element by, for example, an adhesive or a snap fit.

[0022] The shielding element can be part of the housing. In particular, the shielding element can constitute the entire housing of the connector. In a further advantageous development, the impedance improving element is located on the distal side of the connector configured to connect to a counter connector, and the deformation part is adapted to be axially deformed by the counter connector. In such a development, the impedance of the transition area between the connector and the counter connector can be improved.

[0023] To compensate for tolerances during the forming process that result in different distances between the connector and the mating connector in the assembled state, the deformation portion can comprise a spring portion that is elastically deformable in the plugging direction, the plugging direction being the direction in which the connector is mated with the mating connector.

[0024] In one alternative, the deformation can comprise a helical section. Such an arrangement can have a spring function. The spring constant can be adjusted, for example, by appropriate selection of the material thickness and winding density of the helical section.

[0025] The axis of the helix may be parallel to the plugging direction of the connector to allow easy operation.

[0026] In a further alternative, the deformations may comprise serpentines, which may allow for the addition of material to improve impedance while maintaining the degree of deformation.

[0027] In a further alternative, the deformations may comprise disks. These disks may have an insulating effect.

[0028] The deformation may comprise a zigzag portion. The zigzag portion may have several interconnects that are angled relative to one another. Each interconnect may be slightly angled in a direction perpendicular to the plugging direction. Such a configuration may have a spring effect while providing a material that improves the impedance of the area around the contact element.

[0029] The impedance improvement element can be formed by a molding process. The impedance improvement element can be molded into an existing element, such as a housing. Alternatively, the impedance improvement element can be a separate component and attached to an additional component. The impedance improvement element can be configured to be attached to existing connectors to improve their performance.

[0030] In an alternative embodiment, the impedance improving element may be formed by machining.

[0031] The impedance-enhancing element can be constructed from viscoelastic materials such as dry silicone gels, which can be squeezed into non-functional voids, with the added benefit of a constant dielectric constant.

[0032] In a further advantageous development, the impedance improving element is located distal to the connector adapted for connection to a mating connector and the deformation is adapted to deform radially, such a development making it possible to improve the impedance of the transition between the cable and the connector.

[0033] The impedance improvement element may be configured to contact the outer conductor of a connector or electrical connection element, in particular a mating connector or cable. In the attached state, the impedance improvement element may contact the outer conductor. The outer conductor may be part of a shield or a housing of the connector. The outer conductor may be connected to ground or a similar common voltage level.

[0034] The connector may comprise a recess configured to receive the impedance improving element, in particular in a deformed state. For example, the recess may comprise a channel and may be adapted to receive a part of a deformed portion of the impedance improving element, for example when deformed. In particular, the recess may open radially inwardly to receive the impedance improving element, which is deformable radially outwardly.

[0035] The impedance improvement element and the deformation portion can have a hollow portion to allow easy deformation with small force. The connection assembly can include a connector according to the present invention and a cable attached to the connector, and the deformation portion seals and / or holds the dielectric insulation of the cable. Thus, air and creep connections that may cause short circuits can be avoided or elongated.

[0036] To keep manufacturing simple, the impedance-improving element can be attached to the dielectric insulation of the cable before forming the connection between the cable and the connector. The connector can then be slid over such arrangement.

[0037] A connection assembly may comprise a connector according to the invention and a mating connector having at least one mating contact element for the contact element, the impedance improving element surrounding a contact area where the at least one contact element and the at least one mating contact element contact each other. In such an embodiment, the impedance of the transition between the at least one contact element and the at least one mating contact element may be improved.

[0038] To achieve good impedance improvement, the impedance improving element may cover 360° of the circumference of at least one contact element, at least over its length.

[0039] The method according to the invention may advantageously comprise a step of deforming the deformation portion.

[0040] For example, the deformation can be moved at least partially over the dielectric insulation of the cable and then the deformation can be radially deformed.

[0041] The deformation can be controlled depending on the impedance of the connector and / or connection assembly to adjust the impedance, which can be measured, for example, by TDR measurements during the deformation process.

[0042] The adjustment can be done, for example, by adjusting the crimp height. For example, the cross-section and / or circumference of the crimp can be matched to the cross-section and / or circumference of the outer conductor of the cable. A deviation of ±20% of these values ​​can be considered as a match.

[0043] The cross section and / or circumference at the crimp may be smaller than the cross section and / or circumference at the outer conductor of the cable, thereby compensating for nearby sections having a larger cross section or circumference.

[0044] The impedance between the core conductor and the outer conductor at the deformation can be adjusted to match the impedance of the cable. A deviation of ±20% between these impedances can be considered a match.

[0045] The impedance at the deformation can be tailored to be less than the impedance of the cable, which can be used to compensate for areas of higher impedance before or after the crimp.

[0046] In an advantageous embodiment, the deformation or impedance improving element may be radially deformed and the impedance improving element may be adapted to contact an outer conductor of a connector or electrical connection element.

[0047] In a further embodiment, the deformation can be axially deformed. This can be achieved by a movement of the mating connector during the connecting step. In particular, this deformation can occur automatically during the plugging process. To achieve such an automatic deformation, the impedance improvement element can be provided at its front with a stop surface for the mating surface of the mating connector.

[0048] The impedance improvement element may be tubular or sleeve-like, which may allow for easy assembly. For example, the impedance improvement element may have an at least partially circular cross-section to improve the installation process. Alternatively, the impedance improvement element may have other types of cross-sections, such as rectangular or elliptical cross-sections.

[0049] The impedance improving element can have a first portion having a larger inner diameter and a second portion having a smaller inner diameter. The first portion can face proximally. The second portion can face distally.

[0050] At least one contact element may protrude from the impedance improving element through the front through hole, thereby allowing easy contact to be achieved.

[0051] At least one of the contact elements and the through hole may have mating angled or beveled surfaces to allow for precise positioning and sealing.

[0052] The impedance improving element may be provided with a stop surface for a corresponding element of the mating connector, which may allow for precise positioning.

[0053] The impedance improving element may have a sealing surface at a front portion for sealing the at least one contact element with a corresponding element in a mating connector.

[0054] The impedance improving elements can be separate components, for example to allow for the use of different materials. The impedance improving elements can be components that can be formed separately and then added to existing connectors to improve their impedance performance.

[0055] In further embodiments, the impedance-improving element may be integrated into and / or monolithic with other elements, for example, the impedance-improving element may be integrated into or formed by an insulating component, particularly a dielectric insulation between the core conductor and the outer conductor.

[0056] The invention will now be described in more detail and by way of example using advantageous embodiments and with reference to the drawings, in which the described embodiments are only possible configurations, in which the individual features mentioned above can be provided independently of one another or can be omitted. [Brief description of the drawings]

[0057] [Figure 1]FIG. 2 is a schematic longitudinal cross-sectional view of one embodiment of a connector. [Diagram 2] 2A-2D are schematic longitudinal cross-sectional views of the embodiment of FIG. 1 during method steps; [Diagram 3] FIG. 3 is an enlarged view of a detail of FIG. 2. [Figure 4] 2 is a schematic longitudinal cross-sectional view of the embodiment of FIG. 1 after a crimping step; [Diagram 5] FIG. 5 is an enlarged view of a detail of FIG. [Figure 6] 13A and 13B are schematic longitudinal cross-sectional views of a further embodiment of a connector; [Figure 7] FIG. 7 is a schematic side view of the embodiment of the connector shown in FIG. 6. [Figure 8] 13A-13C are schematic side views of further embodiments of a connector; [Figure 9] 13A-13C are schematic side views of further embodiments of a connector; [Figure 10A] 13 is a schematic cross-sectional view of a further embodiment of a connector in a first state. [Figure 10B] 11 is a schematic cross-sectional view of a further embodiment of a connector in a second state. [Figure 11A] 13 is a schematic cross-sectional view of a further embodiment of a connector in a first state. [Figure 11B] 11 is a schematic cross-sectional view of a further embodiment of a connector in a second state. [Figure 12A] 13 is a schematic cross-sectional view of a further embodiment of a connector in a first state. [Figure 12B] 11 is a schematic cross-sectional view of a further embodiment of a connector in a second state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0058] A first embodiment of a connector 10 and a method for improving the impedance of the connector 10 are shown in FIGS.

[0059] The connector 10 can be used in the automotive field, but of course other applications are possible.

[0060] The connector 10 is adapted to be connected to a mating connector 30 (see, for example, FIG. 2 ) by plugging the connector 10 into the mating connector 30 along a plug-in direction P. The connector 10 thus has a contact element 11, which in this example is embodied as a pin that can be received in a mating contact element 31, for example a socket, of the mating connector 30. The contact element 11 is arranged in an interior 15 of the connector 10 and is adapted to contact an electrical connection element 20, such as the mating connector 30, at a distal end 13 or to contact a cable 40 at a proximal end 14 opposite the distal end 13.

[0061] In particular, the contact element 11 is attached to a core conductor 41 of a cable 40. The core conductor 41 is surrounded by a dielectric insulation 42, which is surrounded by an outer conductor 43 of the cable 40.

[0062] The connector 10 further comprises an impedance improving element 50. In this case, the impedance improving element 50 is located on the side of the cable 40 to improve the connection between the cable 40 and the contact element 11.

[0063] The impedance improving element 50 comprises a receiving channel 51 for the contact element 11 in the connector 10, through which the contact element 11 extends. Furthermore, the impedance improving element 50 comprises a deformation portion 52 adapted to deform. In this case, the deformation portion 52 is adapted to deform in a radial direction R perpendicular to an axial direction A along which the contact element 11 extends. The axial direction A is parallel to the plugging direction P.

[0064] The deformations 52 may be constructed from a foam material so that they are easily deformable. In other embodiments, the deformations may be constructed from a heat shrinkable material.

[0065] The deformation portion 52 may be elastically or plastically deformable.

[0066] The impedance improving element 50 is made of a dielectric material and therefore provides an insulating effect. The impedance improving element 50 may be made of, for example, a plastic material or a rubber-like material.

[0067] The impedance improving element 50 is located on the proximal side 14 of the connector 10. The impedance improving element 50 comprises a receptacle 54 for the dielectric insulation 42 of the cable 40. Thus, the dielectric insulation 42 protrudes into the interior 15 of the impedance improving element 50.

[0068] The connector 10 comprises a crimping portion 19 adapted for radial crimping. The crimping portion 19 is plastically deformable in the radial direction R. As shown in Figs. 2-5, a crimping tool 200 is used to deform the crimping portion 19 and the deformed portion 52 of the impedance improvement element 50 by applying radial pressure. In this crimping step, the crimping portion 19 squeezes the impedance improvement element 50 onto the cable 40, thus further mechanically connecting the two. This crimping process leaves a recess 191 in the housing 17 of the connector 10. The housing 17 also comprises a shield 18 that is connected to the outer conductor 43 of the cable to provide electromagnetic shielding. In Fig. 2, a cross section is shown with the recess 191 in the background.

[0069] The deformation 52 is located in the space 190 defined by the crimped portion 19. After crimping and deformation, the interior of the impedance improvement element 50 is sealed. Thus, the core conductor 41 of the cable is insulated from the outer conductor 43, minimizing short circuits due to conduction through air or dirt.

[0070] The impedance improving element 50 may be attached to the cable 40 or connector 10 prior to crimping, allowing for easy assembly. The impedance improving element 50 may be attached, for example, by adhesive or elastic fit.

[0071] Viewed from the front side, the impedance improving element 50 covers the entire circumference of the contact element, thereby maximizing the impedance improving effect and ensuring a tight seal.

[0072] The amount by which the crimping tool 200 deforms the crimping portion 19 and the deformed portion 52 of the impedance improvement element 50 can be adjusted depending on the desired impedance in this area. This amount can be adjusted, for example, by measuring the impedance during the crimping process. The impedance can be measured, for example, by TDR measurements during the deformation process.

[0073] The crimping tool 200 is capable of performing crimping around the entire circumference of the connector 10 or only a portion of the circumference.

[0074] The adjustment can be done, for example, by adjusting the crimp height. For example, the cross section 192 and / or circumference of the housing 17 and shield 18 at the crimp 19 can be matched to the cross section 430 and / or circumference of the outer conductor 43 of the cable 40. A deviation of ±20% between these values ​​can be considered a match.

[0075] The cross section 192 and / or circumference at the crimp 19 may be smaller than the cross section 430 and / or circumference at the outer conductor 43 of the cable 40. This may compensate for nearby portions having a larger cross section or circumference.

[0076] The impedance at deformation 19 can be adjusted to match the impedance of cable 40. A deviation of ±20% between these impedances can be considered a match.

[0077] The impedance at the deformation 19 can be adjusted to be less than the impedance of the cable. This can be used to compensate for areas of higher impedance before or after the crimp 19.

[0078] The impedance improving element 50 may be tubular or sleeve-like, which may allow for easy assembly. The impedance improving element 50 may have a circular cross-section. In other embodiments, the impedance improving element 50 may have a different cross-section.

[0079] The impedance improving element 50 can have a first portion 251 having a larger inner diameter and a second portion 252 having a smaller inner diameter.

[0080] The contact element 11 can protrude from the impedance improving element 50 through a through hole 57 in the distal end 13. This allows easy contact to be achieved.

[0081] The contact element 11 and through hole 57 may have mating beveled surfaces 58, 118 to allow for precise positioning.

[0082] The impedance improving element 50 may be provided with a stop surface 65 for a corresponding element of the mating connector, which may allow for precise positioning.

[0083] The impedance improving element may include a sealing surface 59 on the distal side 13 that seals the contact element 11 with a corresponding element in the mating connector 30 .

[0084] The connection assembly 300 includes a connector 10 and a cable 40 attached to the connector 10 .

[0085] A further embodiment of the connector 10 having an impedance improving element 50 is shown in Figures 6 and 7. In Figure 6, the connector 10 is connected to a mating connector 30, which comprises a socket as a mating contact element 31 for the contact element 11 of the connector 10.

[0086] Again, the connector 10 is used in the automotive field, where it is necessary to manufacture a large number of connectors 10 at low cost. The connectors 10 manufactured in this case have large tolerances, and the distance between the connector 10 and the mating connector 30 varies greatly. This leads to variations in the impedance of the connection assembly 300.

[0087] Apart from the aforementioned impedance improving element 50 located in the transition area between the contact element 11 and the cable 40, the connector 10 further comprises a second impedance improving element 50 located around the front part of the contact element 11. This impedance improving element 50 again comprises a receiving channel 51 for the contact element 11. This impedance improving element 50 also comprises a deformation portion 52 adapted to deform. The deformation portion 52 of this impedance improving element 50 can deform in an axial direction. When contacting the mating connector 30, the deformation portion 52 deforms along the axial direction A of the contact element 11. This causes the space between the contact element 11 and the housing 17 of the connector 10 to be filled with a dielectric material, improving the impedance.

[0088] The embodiment shown in figures 6 and 7 comprises discs 170 whose planes extend along a radial direction R and are therefore perpendicular to the plug-in direction P and to the axial direction A. These discs are therefore able to provide an insulating effect.

[0089] A further embodiment of the connector 10 is shown in Fig. 9. The connector 10 again comprises an impedance improving element 50 located around the contact element 11. The impedance improving element 50 comprises a deformation portion 52 which can be deformed in an axial direction. The deformation portion 52 comprises a helical portion 150 in which the material is arranged in a thread-like manner. An axis 155 of the helical portion 150 extends along the plug-in direction P of the connector 10.

[0090] Such a configuration results in a spring force along the axial direction A. When the connector 10 is plugged into the mating connector 30, the deformed portion 52 automatically deforms, thereby improving impedance regardless of forming tolerances.

[0091] 8 illustrates a further embodiment of the connector 10. In this embodiment, the deformation portion 52 of the impedance improving element 50 comprises a zigzag portion 160 having interconnections 151. The interconnections 151 each have a slight angle 152 with respect to the radial direction R.

[0092] In the embodiment of Figures 6-9, the impedance improving element is located between a mounting portion 16 at which the contact element 11 is attached to a housing 17 of the connector 10 and an end 111 of the contact element 11, the end 111 being configured to connect to an electrical connection element 20 in the form of a mating connector 30.

[0093] Moreover, in the embodiment of FIGS. 6-9, the impedance improving element 50 is located on a distal side 13 of the connector 10, the distal side 13 being configured to connect to a mating connector 30. As shown in FIG.

[0094] The impedance improving element 50 is located near the contact area 81 where the contact element 11 contacts the mating contact element 31 .

[0095] Additionally, the impedance improvement element 50, over its length, covers at least 360° of the circumference of the contact element 11. A further embodiment of a connector 10 having an impedance improvement element 50 is shown in Figures 10A and 10B. The connector 10 is connected to a mating connector 30 and is shown at different mating depths in Figures 10A and 10B.

[0096] The impedance improvement element 50 is constructed from a conductive material and is in conductive communication with the outer conductor 63 of the connector 10, which in this case is the housing 17, which also serves as the shield 18 and is connected to ground. This outer conductor 63 is also connected to the outer conductor 63 of the mating connector 30.

[0097] The deformability of the impedance improving element 50 results in improved impedance for all mating depths.

[0098] The impedance improving element 50 is embodied as a ring surrounding an open space 64 , which serves as a receiving channel 51 for the contact element 11 .

[0099] 11A, 11B, 12A, and 12B show further embodiments of the connector 10. In these embodiments, the impedance improving element 50 and the deformation portion 52 are radially deformable. As in the embodiment of FIGS. 10A and 10B, the impedance improving element 50 is configured to contact the outer conductor 63 and is constructed from a conductive material.

[0100] The impedance improving element 50 is again located on the distal side 13 of the connector 10, which is the side adapted to contact the mating connector 30. The impedance improving element 50 has a basically annular configuration, with an outer ring having an inner hollow portion 66. The hollow portion 66 improves the deformability of the deformed portion 52. When the wedge-shaped front portion 45 of the mating connector 30 is connected to the counter connector, it deforms the impedance improving element 50. During this insertion process, the impedance improving element 50, particularly the deformed portion 52, deforms radially, and the hollow portion 66 is squeezed to a minimum volume. Due to the radial deformation of the deformed portion 52, the impedance of the impedance improving element 50 varies depending on the mating or insertion depth of the mating connector 30, improving the overall impedance of the connection assembly 300.

[0101] A further embodiment is shown in Figures 12A and 12B. The impedance improvement element 50 is again located on the distal side 13 of the connector 10 and is radially deformable. When the mating connector 30 is inserted into the connector 10, the deformation portion 52 of the impedance improvement element 50 is deflected radially outward by the wedge-shaped front portion 45 on the mating connector 30. A recess 68 is present in the connector 10 to receive the impedance improvement element 50. The recess 68 is formed by the outer conductor 63 of the connector 10. The recess 68 is channel-like, and the channel opens radially inward to receive the impedance improvement element that deflects radially outward.

[0102] The impedance improving element 50 can again be conductive and can make electrical contact with the outer conductor 63 of the connector 10. Depending on the insertion depth of the mating connector 30, the deflection of the impedance improving element 50, particularly the deformation portion 52, also varies. Thus, the appearance of this region also varies, and the overall impedance of the connection assembly 300 is improved compared to a configuration without the impedance improving element 50.

[0103] In the illustrated embodiment, the impedance improvement element 50 is a separate component that may be manufactured separately. However, in other embodiments, the impedance improvement element 50 may be integrated into or monolithic with other components. For example, the housing 17 or the dielectric insulation between the core conductor and the outer conductor may form the impedance improvement element 50. [Explanation of symbols]

[0104] 10 Connectors 11 Contact element 12 Electrical connection element side 13 Distal 14 Proximal 15 Inside 16 Mounting part 17 Housing 18 Shield 19 Crimping section 20 Electrical connection element 30 Mating connector 31 Mating contact element 40 Cable 41 Core conductor 42 Insulation 43 Outer conductor 45 Front part 50 Impedance improvement factors 51 Receiving Channel 52 Deformation section 54 Receptacle 55 Spring part 57 Through hole 58 Slope 59 Sealing surface 63 Outer Conductor 64 Empty Space 65 Stop surface 66 Hollow part 68 Recess 81 Contact Area 111 End of contact element 118 Slope 150 Spiral section 151 Interconnection 152 angle 155 Axis 160 Zigzag section 170 Disc 190 Space defined by crimped portion 191 Hollow 192 Section 200 Crimping tool 251 First Part 252 Second Part 300 Connection Assembly 430 Cross Section A axis direction P Insertion direction R Radial direction

Claims

1. A connector (10) for high frequency transmission in the automotive field, comprising at least one contact element (11) arranged in an interior (15) of the connector (10), the at least one contact element (11) adapted to contact an electrical connection element (20), the electrical connection element (20) being a cable (40) or a mating connector (30), the connector (10) further comprising an impedance improving element (50) arranged in the connector (10) and located on the side of the electrical connection element (20). the impedance improvement element (50) comprises a receiving channel (51) through which the at least one contact element (11) extends and a deformation portion (52) adapted to deform in at least one of a radial direction or an axial direction, the impedance improvement element (50) comprising a receptacle (54) for receiving a dielectric insulation (42) of the cable (40), the deformation portion (52) being adapted to deform radially around the dielectric insulation (42).

2. The connector (10) of claim 1, wherein the impedance improving element (50) is located on a proximal side (14) of the connector (10) configured to connect to the cable (40).

3. The connector (10) of claim 1 or 2, wherein the connector (10) comprises a crimp portion (19), and the impedance improving element (50) is located in the crimp portion (19).

4. The connector (10) of any one of claims 1 to 3, wherein the impedance improving element (50) is attached to a shield (18) of the connector (10).

5. A connector (10) as described in any one of claims 1 to 4, further comprising a second impedance improvement element (50) located on a distal side (13) of the connector (10) configured to connect to the mating connector (30), the second impedance improvement element (50) comprising a second receiving channel (51) through which the at least one contact element (11) extends, and a second deformation portion (52) adapted to be deformed axially by the mating connector (30).

6. 6. The connector (10) of claim 1, wherein the impedance improving element (50) is located between a mounting portion (16) where the at least one contact element (11) is attached to a housing (17) of the connector (10) and an end (111) of the at least one contact element (11), the end (111) being configured to connect to the cable (40).

7. The connector (10) of any one of claims 1 to 4, wherein the deformation portion (52) is constructed from a foam material.

8. An impedance improvement element (50) adapted for use in a connector (10) according to any one of claims 1 to 7.

9. 8. A connection assembly (300) comprising the connector (10) of any one of claims 1 to 7 and a cable (40) attached to the connector (10), wherein the deformed portion (52) of the impedance improvement element (50) seals and / or retains a dielectric insulation (42) of the cable (40).

10. The connection assembly (300) of claim 9, wherein the impedance improvement element (50) is attached to a dielectric insulation (42) of the cable (40).

11. 1. A method for improving impedance of a connector (10) having at least one contact element (11), comprising: an impedance improvement element (50) is used, the impedance improvement element (50) being disposed in the connector (10) and comprising a receiving channel (51) for the at least one contact element (11) and a deformation portion (52) adapted to deform, the impedance improvement element (50) further comprising a receptacle (54) for receiving a dielectric insulation (42) of a cable (40), the deformation portion (52) deforming radially around the dielectric insulation (42).

12. The method of claim 11, comprising the step of deforming the deformation (52).

13. 13. The method according to claim 11 or 12, wherein the deformation (52) is moved at least partially over the dielectric insulation (42) of the cable (40) and then the deformation (52) is radially deformed.

14. The method according to any one of claims 11 to 13, wherein the deformation is controlled in response to the impedance of the connector (10).

15. A connector (10) for high frequency transmission in the automotive field, comprising at least one contact element (11) arranged in an interior (15) of the connector (10), the at least one contact element (11) adapted to contact an electrical connection element (20), the electrical connection element (20) being a cable (40) or a mating connector (30), the connector (10) further comprising an impedance improvement element (50) located on the side of the electrical connection element (20), the impedance improvement element (50) comprising a receiving channel (51) through which the at least one contact element (11) extends and a deformation portion (52) adapted to deform in at least one of a radial direction or an axial direction, The impedance improving element (50) is located on a distal side (13) of the connector (10) configured to connect to the mating connector (30), and the deformation portion (52) is adapted to be radially deformed by the mating connector (30).

16. A connector (10) for high frequency transmission in the automotive field, a cable (40) attached to the connector (10); The connector (10) comprises: at least one contact element (11) arranged in an interior (15) of the connector (10), the at least one contact element (11) adapted to contact an electrical connection element (20), the electrical connection element (20) being the cable (40) or a mating connector (30); The connector (10) further comprises an impedance improving element (50) located on the side of the electrical connection element (20), the impedance improving element (50) comprising a receiving channel (51) through which the at least one contact element (11) extends and a deformation portion (52) adapted to deform in at least one of a radial direction or an axial direction; A connection assembly (300), wherein the deformation (52) seals and / or retains a dielectric insulation (42) of the cable (40).

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