EP2092616A2

EP2092616A2 - Manufactured round plug connector for the ethernet

Info

Publication number: EP2092616A2
Application number: EP07846787A
Authority: EP
Inventors: Christian Helmig; Matthias Bergmann; Jens KÖSTER
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2006-11-24
Filing date: 2007-11-23
Publication date: 2009-08-26
Also published as: CN101542849B; CN101542849A; US7938650B2; DE102006056001B4; JP2010510634A; WO2008061780A2; JP5259613B2; WO2008061780A3; DE102006056001A1; US20100048061A1

Abstract

The invention relates to an industrial connector having a circular connection face that can be manufactured and can be used for transmitting multiplex signals and for ethernet applications. According to a preferred connector of the invention, said connector is a 8-pole round plug and the inner structure can be subdivided into three individual main elements. One part has eight plug contacts that constitute the plug face of the round plug for connecting with a counter-connector, one other part is a connection block that enables a data line to be connected in the field and thus the manufacture thereof, and the third part is a conductor plate which forms a connection element between the connection block and the pin contacts and ensures the connection of the signal transmission path between the pin contacts and the connection contacts of the connection block.

Description

Field attachable circular connector for Ethernet

description

The invention relates to an industrial and Ethernet capable connector with circular connection face.

To ensure unrestricted data transfer in connectors for Ethernet applications, they must meet certain requirements, such as near end cross talk (NEXT), return end talk (FEXT), return loss (RETURN LOSS), attenuation ( LOSS), as described for example in the standard DIN-EN 50173. Relevant design parameters for optimizing the high-frequency behavior (HF behavior) of differential data pairs are, for example, the dielectric constant of the insulating material used, the geometric distance between the pairs and the thickness of the lines or contacts. In the case of a module or device consisting of individual components, a certain HF behavior is predetermined by the individual behavior of each component.

In telecommunications and / or office application technology, conventionally modular connectors will be used which have a parallel or series arrangement of contacts to be connected with mating contacts, such as the RJ-45 connector. In these areas, it is state of the art that in the case of a connecting element of the individual components, such as, for example, a printed circuit board, an inductive and / or capacitive coupling is introduced, which compensates for the previously negative behavior, so that the requirements for the module, such as Cat5 (according to DIN EN 50173) are met.

With regard to the state of the art that is extensive for telecommunications and / or office application technology, examples are EP 1 063 734, EP 1 096 620, EP 1 170 834, EP 1 414 115, US 5,310,363, US 5,326,284, US 5,997,358, US 6,099,357 , US 6,319,069, US 6,402,560, US 6,840,779, US 2004/0147165, US 2005/0277339, US 2006/0160428, WO 01/80376, WO 02/17442, WO 2005/081369, WO 2005/117200, WO 2006/017332, WO 2006/062794 and WO 2006/068974 called.

The application and technology of structured

Cabling of office buildings has thus far been introduced and matured, that today, new standardization work is underway to transfer the success of the office world in the industrial environment. Compared to the office and telecommunications world with the usual tree and

Star structure are in the industrial area, however, line and ring structures to consider. Furthermore, in addition to voice and conventional data transmission, process controls and controls must operate safely under all operating conditions, which, in addition to increased environmental requirements in various industries, further increases reliability requirements.

The different requirements between the

Telecommunications and / or office application technology on the one hand and the industrial environment on the other hand inevitably lead to different Connector variants and the solutions developed in relation to telecommunications and / or office application technology used modular connectors are not readily transferable to industrial connectors.

So far, there are two trends in the field of industrial connectors. On the one hand, commercial RJ45 connectors, as known from the field of office communication, are prepared by external packaging for use in industrial environments. In particular, there are different housing variants for rough

Ambient conditions in which RJ 45 connector inserts, shielded or unshielded, can be used for 100, 250 or 600 MHz. The housing variants differ in shape (round or rectangular connection housing), locking devices (screw, bayonet, latch lever, push-pull locking) and special features, the variants are often not compatible plug.

On the other hand, in the industrial field, widely used connectors, such as the M12 circular connector introduced at the field bus level in many harsh environment applications, are modified in their internal structure to meet the requirements for data transmission. There are now 4-pin connectors in the M12 environment, both as patch cables and in field-mountable versions that meet Cat5 requirements.

If the signal multiplexing technology is used for higher transmission rates, more data pairs, at least 4 pairs of data, necessary. To date, there are only pre-assembled M12 patch cords in 8-pin design on the market that meet the Cat5 requirement.

The object of the invention is to provide an industrial circular connector which can be assembled for the harsh field range of industrial application and in the field, which can be used for the transmission of multiplexed signals and thus also for Ethernet applications.

Solutions according to the invention are defined in the claims, the subclaims representing further advantageous and / or preferred embodiments and developments.

According to the invention, an inner, subdividable into three individual main elements connector assembly is provided, in which a part are the plug contacts, which are arranged for connection to a mating connector as a circular mating face of the connector, another part is a terminal block having a connection of a data line in Field and thus the assembly made possible and the third part is a printed circuit board which forms an adjustable link between the terminal block and the plug contacts and provides the connection of the signal transmission paths between the plug contacts and the terminal contacts of the terminal block, so that thus the free assembly, the transmission of For the first time, multiplexed signals and use for Ethernet applications in an industrial grade connector with circular mating face are enabled. According to the invention, in particular, an industrial-grade round connector is provided, which comprises a connecting element with a round cross-section for mechanical connection to a complementary mating connector in the direction of a perpendicular to the cross-section connecting axis, and a printed circuit board which extends parallel to the cross section and a first and an opposite second outer Surface has, in view along the connection axis, and a plurality of elongated plug contacts, which extend substantially along or parallel to the connection axis and each having opposite first and second ends, wherein the first ends of the plug contacts from the first outer surface coming in the printed circuit board are held, and define the opposite second ends of a circular mating face, and a terminal block arranged on the second outer surface with one of the number of plug contacts corresponding number of terminals which are held in the printed circuit board from the second outer surface side, the terminal block further having to each terminal a receptacle electrically connected thereto for receiving a wire of a data cable, and wherein the printed circuit board traces in at least two levels some of which electrically contact one plug contact and one pad contact for making a respective signal transmission path, and others construct a capacitance between selected signal transmission paths.

Preferably, the connector is an 8-pin M12 circular connector. Is this formed as a round plug are expediently the second ends of the plug contacts formed as pin contacts.

The circuit board expediently has a plurality of layers and a fundamentally sandwich-type construction, wherein layers alternate with interconnects and dielectric layers.

It is advantageous if a capacitance between each one of the selected signal transmission paths is in each case constructed via two conductor tracks which are arranged on different layers spaced apart by a dielectric layer. In a practical embodiment, two printed conductors each form a flat plate capacitor in order to build up a capacitance.

Preferred embodiments include plate capacitors formed in at least two different planes.

Conveniently, a dielectric layer between two layers over which a plate capacitor is constructed is thinner than a dielectric layer between two plate capacitors provided at different levels.

It is also advantageous, in order to ensure the greatest possible compatibility, that the signal transmission paths are based on the RJ-45 standard.

In preferred embodiments, the terminal contact image of the terminal block is rectangular, so that already established on the market Terminal blocks are used.

For ease of integration, the terminals are held parallel to and around the connection axis in the circuit board.

The diameter of the circular mating face is given by plug contacts arranged on a radius around the connection axis, wherein according to a preferred embodiment the first ends of these plug contacts are arranged on a first common radius about the connection axis, and between these first ends and the respectively opposite second ends This plug contacts a transition region is formed, such that these second ends on a second common

Radius are arranged around the connection axis around and within the radius of a further, inner plug contact is arranged.

Further advantages and features of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. In the drawings show:

1 is a view of an 8-pin M12

Circular connector, Fig. 2 is a partial view of the internal structure of an 8-pin M12 circular connector after the

Invention relating to the arrangement of the plug contacts, a terminal block and a printed circuit board arranged between them Fig. 3 is a sketchy plan view of a according to FIG.

2 used connection block from the side

PCB,

4 is a plan view of the arranged on the circuit board plug contacts according to FIG. 2,

FIG. 5a shows a bent connector contact of the freely configurable M12 circular connector according to FIG

2,

5b shows the middle connector contact of the freely configurable M12 round connector according to FIG

Fig. 2, Fig. 6 schematic layer structure of the circuit board according to

2,

7 is a schematic plan view of the first layer of the printed circuit board according to FIG. 6, FIG.

8 is a schematic plan view of the third layer of the printed circuit board according to FIG. 6, FIG. 9 is a schematic plan view of the fifth layer of the printed circuit board according to FIG. 6, FIG. 10 is a schematic plan view of the seventh layer of the printed circuit board according to FIG. 6 FIG. 11 is a graph of return loss based on a printed circuit board construction according to FIGS

FIGS. 7 to 10, Fig. 12 is a diagram relating to the crosstalk attenuation based on a printed circuit board assembly according to the

FIGS. 7 to 10.

Hereinafter, a preferred embodiment of the invention using the example of an 8-pin M12 circular connector will be described. Fig. 1 shows the basic structure of an 8-pin M12 circular connector, in this case an 8-pin circular connector 100 with an outer, a shield comprehensive, round in cross section housing 101 and a connecting element 102 with a round cross section for mechanical connection with a complementary counter-circular connector along a perpendicular to the cross-section connecting axis "V". In the present example, the connecting element 102 has a screw lock, so that the round plug according to FIG. 1 corresponds to the standard DIN EN 61076, which describes circular connectors for control circuits in industrial installations, such as switchgear and equipment, and also detail specification for circular connectors M8 with screw or Locking latch and M12 with screw lock for

Low-voltage application and, accordingly, the circular plug or connection face defined, which adjusts through the elongated, extending substantially along or parallel to the connecting axis, arranged inside the housing plug contacts 10 sets. The determination of the contact diameter and the standardized dimensions are also well defined. The round plug 100 also has an encoding 103.

FIG. 2 shows, for such a round plug 100 according to FIG. 1, a partial view of the internal structure adapted according to the invention relating to the connection-technical arrangement of the connector contacts 10 via a printed circuit board 20 with a terminal block 30 for free assembly.

The elongated plug contacts 10 of the circular plug 100 are formed like a pin with respective opposite first and second contact ends. In the case of a round bush as Circular connectors, the plug contacts are formed in accordance with bushing.

A contact end of each plug contact opens into circuit board 20, respectively, and the opposite contact ends together define the circular plug face. The circuit board 20 extends perpendicular to the connection axis "V", having a round shape for ease of mounting in the housing 101, and has two opposite outer planar surfaces facing along the connection axis "V". The contact ends held in the printed circuit board 20 each form a substantially right angle with the printed circuit board surface, from the side of which they are held in the printed circuit board.

On the opposite outer circuit board surface of the terminal block 30 is arranged. The terminal block 30 has a number of plug contacts 10 corresponding number of terminals, which are also held in the circuit board 20 coming from this opposite circuit board surface. The terminal contacts held in the circuit board are arranged parallel to and around the connection axis "V".

For each connection contact, the terminal block further has a recording device 40, which is electrically connected to the latter and not explicitly shown, for receiving a wire of a data cable, thereby enabling the freedom of assembly of the industrial circular plug connector in the field. Preferably, a terminal block is used, which is known per se for the core receiving devices Cutting technology used as this type of line connection often unnecessary costly finishing tool and thus leads to a time savings.

The internal structure of the 8-pole circular connector according to the invention according to FIG. 2 can thus be subdivided into three individual main components. One part is the eight plug contacts 10, which are arranged for connection to a mating connector as a mating face of the circular connector, another part is the terminal block 30 which allows a connection of a data line in the field and thus the assemblability and the third part is the circuit board 20, which forms a link between the terminal block 30 and the pin contacts 10 and provides the connection of the signal transmission paths between the pin contacts 10 and the terminal contacts of the terminal block 30.

Through the use of two-wire cables or

Signal transmission path pairings, which are also common in Ethernet applications, can thus be caused in the terminal block 30 and when transferred to the contacts 10 crosstalk between adjacent signal transmission paths and a capacitive asymmetry, wherein the

Requirements, in particular with respect to NEXT and RETURN LOSS, to a connector are higher than those to a patch cord and the transmission distance of a connector with respect to NEXT and RETURN LOSS must be better damped.

In a free-field-suitable industrial-grade circular connector according to the invention, which also for Ethernet applications, for example, according to CAT5 (Category 5), is used, houses the circuit board 20, which forms the link between terminal block 30 and plug contacts 10, in at least two levels of interconnects, some of which for producing a respective

Signal transmission path between a plug contact and a terminal contact these electrically contact each other, and others provide a capacity between selected signal transmission paths. In this way, on the one hand, it can be ensured that

In the case of a necessary crossing of signal transmission paths, conductor tracks do not lead to short-circuits and maintain sufficient insulation distances. On the other hand, capacitive asymmetries can be compensated by additional capacitances integrated in the printed circuit board in order to produce the most homogeneous possible capacitive symmetry.

The printed circuit board 20 is also a component that can be adapted in its layout and its electrical operation within the scope of the invention, depending on the specific terminal block 30 used. Consequently, the invention can also integrate already available on the market terminal blocks without changing them. Such a terminal block 30 already available on the market has e.g. two parallel rows, each with four terminals, wherein in Fig. 2 by the reference numerals 31, 32, 33 and 34, a number of terminals and associated receiving means is indicated.

For the following description, it is further assumed that the terminal block 30 shown in FIG. 2, a terminal block is used, with its Connection contacts the mating face of an RJ45 connector, as it is known from the telecommunications and office area, is ajar. This opens up the additional possibility of packaging a cable in which an RJ45 connector is attached to one side and the opposite side is assembled with an M12 circular connector according to the invention. Such an application is advantageous if, for example, a memory programmable controller (PLC) is to be programmed by means of a notebook. The interface on the PLC can therefore be equipped with the industry-standard M12 circular connector, while the standard RJ45 connector is retained on the notebook. With this application, the notebook can be used for an on-site industrial application as well as at a workstation in an office without the need for two different interfaces. Even though there is currently no standardized pin assignment for the assignment of the 8-pin M12 connector for Ethernet applications, this ensures extensive compatibility with the existing market.

A sketchy plan view of such a connection block from the side of the circuit board is shown in FIG. 3. The association between the connection contacts 31, 32, 33, 34, 35, 36, 37 and 38 and connected

Signal transmission cores are based on the Ethernet standard. The connection contacts 35 and 36 are assigned to the first signal pair "1", wherein it is assumed that the connection contact 36 is assigned when using "twisted pair lines" of the "striped" wire. The connection contacts 37 and 38 are assigned to the second signal pair "2", wherein the connection contact 37 is assigned to the "striped" core. The connection contacts 33 and 34 are associated with the third signal pair "3", wherein the terminal contact 34 of the "striped" wire is assigned. The connection contacts 31 and 32 are assigned to the fourth signal pair "4", wherein the connection contact 32 is assigned to the "striped" wire.

A sketch-like plan view of the plug contacts 10 arranged on the printed circuit board is shown in FIG. 4. The eight plug contacts are denoted by 11, 12, 13, 14, 15, 16, 17 and 18. In order for the inventive 8-pole, freely connectable circular connector to match the market and the layout of 8-pole pre-assembled connector, the plug contacts 17 and 11, 13 and 12, 18 and 15 and 16 and 14 respectively form the plug contact pair for the signal pair 4, 2, 1 or 3. For the following description, the corresponding assigned assignment of signal transmission path pairs is denoted by 7-1 (signal pair 4), 3-2 (signal pair 2), 8-5 (signal pair 1) and 6-4 (signal pair 3).

In FIGS. 3 and 4, the reference numeral 39 further indicates mechanical positioning aids for the connection block 30 on the printed circuit board 20, which are, for example, two small guide pins of the connection block 30 which can be inserted into the printed circuit board 20. As is also apparent from FIG. 4, the invention integrates due to the substantially entlag an axis aligned, opposite arrangement of plug contacts 11, 12, 13, 14, 15, 16, 17, 18 0 and terminal contacts 31, 32, 33, 34, 35th , 36, 37, 38 an adapted geometry of the plug contacts, so that the plug face of the circular connector including the diameter in the contact zone for contacting a Gegenrundsteckverbinders continue to comply with the standards Regulations are sufficient, otherwise there may be difficulties in the layout of the circuit board.

By the adaptation of the geometry, shown in Fig. 5a for the outer pin contacts 11, 12, 13, 14, 15, 16 and 17, for example, on the plug contact 11 and shown in Fig. 5b for the inner pin contact 18, but is in an advantageous manner the Compliance with insulation distances and prevents a short circuit between individual contacts and terminals in the construction of the circuit board prevented.

According to Fig. 5a, the outer plug contact 11 has between its respective opposite ends 111 and 112 a curved transition region. The held in the circuit board 20 ends 111 and the corresponding ends of the other outer plug contacts 12, 13, 14, 15, 16, 17 are consequently, as well as the Fig. 3 refer to a common larger radius around the connecting axis around and thus hold a sufficient distance to the circuit board 20 held in the terminal contacts 31, 32, 33, 34, 35, 36, 37 and 38, whereas the opposite contact end and the corresponding contact ends of the other outer plug contacts 12, 13, 14, 15, 16, 17 are further arranged on the common radius required for a standardized plug face around the connection axis by the bend or the transition region.

The middle plug contact 18 of the circular connector is shown in FIG. 5b continue to be basically straight and has a thin tip as the contact end 181, which forms a solder pin of the plug contact 18 in the holder in the circuit board 20.

The plug face of the invention, free-field-plugable circular connector according to the standard can thus be implemented even in the above-indicated terminal blocks. As stated above, the free-formable, also usable in Ethernet circular connector according to the invention comprises a circuit board

20, which houses traces in at least two levels, some of which electrically contact a plug contact and a pad contact within the circuit board, respectively, to establish a respective signal transmission path, and others establish capacitance between certain signal transmission paths.

With respect to Figs. 3 and 4 assumed wire assignment is expediently a sandwiched from at least seven layers circuit board 20, as described below with reference to FIGS. 6 to 10 described. In this case, preferably two conductor tracks each for establishing a coupling capacitance form a plate capacitor integrated in the printed circuit board, such a plate capacitor being more preferably practical

Execution by two each in different planes arranged flat capacitor plates, e.g. by applying copper surfaces is formed.

6 shows a sketch of the multilayer structure of the printed circuit board 20 chosen for the exemplary embodiment. The construction comprises a total of seven layers or layers 21, 22, 23, 24, 25, 26 and 27. The first, third, fifth, and seventh layers 21, 23, 25, and 27, respectively comprise metallized or impressed traces for electrically connecting signal transmission paths and / or connecting selected signal transmission paths with equalization or coupling capacitances.

The respective intermediate layers, as shown in FIG. 6, the second, fourth and sixth layers 22, 24, and 26 comprise the base material of the circuit board and serve as a dielectric.

Layers 22 and 26 serve as a dielectric for layers 21 and 23 and 25 and 27, respectively

Plate capacitors and are thinner than the layer 24, which serves as a dielectric between two, integrated in different levels plate capacitors, ie between a plate capacitor integrated in the layers 21 and 23 and a built-in layers 25 and 27 plate capacitor.

The spacing of the individual conductor track layers or layers 21, 23, 25, 27 can also be predetermined by the structural design of the printed circuit board and the capacitance size can be varied on the basis of fixed dimensions and a constant dielectric constant of the base material of the printed circuit board based on the size of the capacitor surfaces.

As a PCB base material, for example, an FR-4 material can be used. The Fign. 7, 8, 9 and 10 show in succession the conductor track guide on the first conductor track comprising layer 21, according to FIG. 6, the first b2w. Upper layer, the second conductor tracks comprising layer 23, as shown in FIG. 6, the first inner conductor tracks comprehensive or third

Layer 23, the third conductor tracks comprising layer 25, according to FIG. 6, the second inner conductor tracks comprehensive or fifth layer 25, and the fourth conductor tracks comprising layer 27, as shown in FIG. 6, the seventh and lower layer 27th

As can be seen electrically connected to each other via the layer 23: the plug contact 11 and the terminal contact 32, the plug contact 16 and the terminal contact 33, the plug contact 14 and the terminal contact 34, the plug contact 13 and the terminal contact 38, and the terminal contact 33 with a capacitor plate 211 and the terminal contact 37 with a capacitor plate 212;

and via the layer 22 are electrically connected to each other: the plug contact 14 with a capacitor plate 232 and the terminal contact 38 with a capacitor plate 231st

The capacitor plate 211 and the capacitor plate 231 in this case form a first plate capacitor for providing a first balancing capacitance and the capacitor plate 212 and the capacitor plate 232 form a second plate capacitor for providing a second balancing capacity.

Via the layer 25 are electrically connected to each other: the plug contact 17 with a capacitor plate 253 and the terminal contact 32 with a capacitor plate 254;

and via the layer 27 are electrically connected to each other: the plug contact 12 and the terminal contact 37, the plug contact 17 and the terminal contact 31, the plug contact 15 and the terminal contact 36, the plug contact 18 and the terminal contact 35, and the terminal contact 34 with a capacitor plate 273rd ; the connection contact 33 with a capacitor plate 274th

The capacitor plate 253 and the capacitor plate 273 in this case form a third plate capacitor for providing a third compensation capacitor and the

Capacitor plate 254 and capacitor plate 274 form a fourth plate capacitor for providing a fourth balancing capacitance.

With additional consideration of the description too

FIGS. 3 and 4 thus lies the first signal pair 1, which is guided in accordance with terminal block 30 via the connection contacts 35-36, thus is applied to the plug contacts 18-15 (Signalübertragungswegpaar 8-5). The second signal pair 2, which according to terminal block 30 via the

Terminal contacts 38-37 is performed, is thus at the plug contacts 13-12 (Signalübertragungswegpaar 3-2). The third signal pair 3, which is guided in accordance with terminal block 30 via the connection contacts 33-34, thus abuts against the plug contacts 16-14 (Signalübertragungswegpaar 6-4). The fourth signal pair 4, which is guided in accordance with terminal block 30 via the connection contacts 31-32, is located thus at the plug contacts 17-11 (Signalübertragungswegpaar 7-1).

Further, between the signal transmission paths 3 and 6, the signal transmission paths 2 and 4, the signal transmission paths 7 and 4 and the signal transmission paths 1 and 6 each have a capacity connected.

Based on specified above

Exemplary embodiments give FIGS. 11, 12 exemplary measurement curves for the RETURN LOSS of the individual signal pairs and the NEXT of the different signal pair combinations of the industrial-grade and assemblable circular connector according to the invention, which is also suitable for

Ethernet can be used, again. It can be seen that the Cat5 requirements for connectors are met in both sizes.

It will be apparent to those skilled in the art that the invention is not limited to the embodiment described above, but rather can be varied in many ways. In particular, unless expressly stated, features may also be combined in different ways.

Claims

claims

A connector incorporating an internal connector structure subdividable into three single main elements, one part being plug contacts arranged for connection to a mating connector as a circular mating face of the connector, another part being a terminal block having a terminal a data line in the field provides and the third part is a printed circuit board which forms an adjustable link between the terminal block and the plug contacts and provides the connection of the signal transmission paths between the plug contacts and the terminal contacts of the terminal block.

2. A connector, in particular according to the preceding claim, comprising a connecting element with a round cross-section for mechanical connection with a complementary mating connector in the direction of a perpendicular cross-section connecting axis, a circuit board which extends parallel to the cross section and a first and an opposite second outer surface Having in along the connection axis, a plurality of elongate plug contacts, which extend substantially along or parallel to the connection axis and each having opposite first and second ends, wherein the first ends of the plug contacts coming from the first outer surface side in the printed circuit board are held, and the opposite second ends define a circular mating face, a terminal block disposed on the second outer surface having a number of mating contacts corresponding to the number of mating contacts received in the circuit board from the second outer surface side, the terminal block further connected to each mating terminal one electrically connected thereto A recording device for receiving a wire of a data cable, wherein the circuit board houses printed conductors in at least two planes, some of which electrically contact a plug contact and a connection contact for producing a respective signal transmission path, and others build a capacity between selected signal transmission paths.

A connector according to any one of the preceding claims, which is an 8-pin M12 connector.

4. Connector according to one of the preceding claims, wherein the second ends of the plug contacts are formed as pin contacts.

5. Connector according to one of the preceding claims 1 to 3, wherein the second ends of the plug contacts are formed like a bush.

6. A connector according to any one of the preceding claims, wherein the printed circuit board has a plurality of layers and a basically sandwich-like structure, wherein layers with conductor tracks and dielectric Alternate layers.

7. Connector according to the preceding claim, in which a

Capacitance between each one of the selected signal transmission paths is constructed in each case via two conductor tracks, which are arranged on different, spaced apart by a dielectric layer layers.

8. A connector according to the preceding claim, wherein each form two tracks for building a capacitance a flat plate capacitor.

A connector according to the preceding claim, wherein plate capacitors are formed in at least two different planes.

A connector according to the preceding claim, wherein the dielectric layer between two layers over which a plate capacitor is constructed is thinner than a dielectric layer between two plate capacitors provided in different planes.

A connector according to the preceding claim, wherein the

Signal transmission paths are based on the RJ-45 standard.

12. A connector according to any one of the preceding claims, wherein the terminal contact image of the terminal block is rectangular.

13. A connector according to any one of the preceding claims, wherein the terminals are held parallel to and around the connection axis in the circuit board.

14. A connector according to any one of the preceding claims, wherein the diameter of the circular mating face is given by arranged on a radius around the connection axis plug contacts.

15. A connector according to the preceding claim, wherein the first ends of these plug contacts are arranged on a first common radius around the connection axis.

16. A connector according to the preceding claim, wherein between these first ends and the respective opposite second ends of these plug contacts, a transition region is formed, such that these second ends on a second common

Radius are arranged around the connection axis around.

17. A connector according to one of the three preceding claims, wherein within the radius, a further, inner plug contact is arranged.