EP3396639A1 - Vehicle door handle with antenna arrangement - Google Patents

Abstract

The invention relates to a vehicle door handle for arrangement on a motor vehicle, wherein the vehicle door handle has a handle (1) and a handle support (5), wherein the handle (1) in the handle support (5) is mounted. The handle (1) is formed as an elongated body having a first end portion (a) and a second end portion (c) and a gripping portion (b). Bearing portions of the end portions (a, c) protrude into the handle support (5) and are stored there. In a cavity of the handle, an antenna for UWB signal transmission is arranged and coupled to a control circuit (10) and in a further development with a proximity sensor (13). The invention further relates to an authentication system and a use of a vehicle door handle according to the invention in an authentication system.

Description

The invention relates to a vehicle door handle with an antenna arrangement.

In particular, the invention relates to a vehicle door handle for mounting on a motor vehicle, wherein the vehicle door handle has a handle and a handle support. The handle is stored in the handle carrier. Such a vehicle door handle assembly is mounted on a vehicle door by the handle support on the inside of a door panel, so the passenger compartment facing side comes to rest, while the handle is arranged for actuation by the user on the outside of the door panel. In this way, the door panel between the handle and the handle support. Lugs on the handle protrude through openings in the door panel and are coupled to the handle support.

The handle is designed as an elongated body, wherein bearing portions are formed in the longitudinal direction of the handle at both end portions. Depending on the configuration of the door handle as a fixed door handle or as a pivotable door handle, the bearing sections are fixed or movable coupled to the handle support.

In a middle portion of the handle, a gripping portion for engaging by a user is formed.

In a fixed door handle, the bearing sections are fixedly coupled to the handle support. This coupling takes place during initial assembly and the door handle interacts with an electrically operated lock (e-latch). The handle then serves, in particular, as an access possibility for pivoting the door and, where appropriate, accommodates electronic sensors and other components which trigger the electric door lock when a user accesses the door handle.

In a pivotable door handle, however, an end portion of the handle is formed as an operating portion with associated bearing portion. In a second end portion along the longitudinal orientation of the handle of the pivotable door handle, a pivot portion is formed with associated bearing portion. The pivoting portion and the actuating portion are arranged correspondingly at opposite longitudinal ends of the handle.

The actuating portion of a pivotable handle is referred to in this application as such, since it protrudes with its bearing portion in the handle carrier and there is in mechanical operative connection with actuating means to transmit a movement of the handle on the actuating means. This section is movable when a user grips or engages the gripping section and exerts a pulling force. Then, the actuating portion is deflected and the associated bearing section actuated in the handle support the actuating means.

At the other end of the handle of the pivoting door handle of the pivot portion is formed. The bearing portion of this pivotal portion is received in a pivotal bearing of the handle carrier, so that the handle is pivotable in traction of the user in the gripping portion in a guided movement by interaction of the bearing portion of the pivot portion and the pivot bearing. The handle is thus pivoted on one side in a pivot bearing and thus at the other, from the pivot portion distal end (the actuating portion) deflected to actuate the actuating means in the handle support.

Regardless of the type of door handle, so both fixed door handles as well as hinged door handles, at least one antenna is arranged with a control circuit in the handle itself, wherein the control circuit has signal lines, which by the handle to the Handle carrier are guided. Through the antenna in the handle electromagnetic signals can be emitted.

Vehicle door handles of the type mentioned are known in the art. For example, a generic vehicle door handle device from the EP 2 772 986 A1 known.

The arranged in the vehicle door handle antennas are often low-frequency antennas, which send trigger or wake-up signals to electronic car keys for so-called keyless entry systems. Increasingly, however, there is a demand for more complex communication in automobiles.

The invention has the object to provide an improved functionality of a vehicle door handle.

The object is achieved by a vehicle door handle having the features of claim 1, by a use having the features of claim 15 and by an authentication system having the features of claim 16.

According to the invention, the vehicle door handle of the aforementioned type has an ultra-wideband antenna in the interior of the handle, which is designed for ultra-wideband signal transmission. Ultra-broadband is also referred to in this context as UWB, Ultra Wide Band, abbreviated. The control circuit is preferably designed as a transceiver circuit for bidirectional operation, that is to say transmission operation and reception operation with the same UWB antenna. The UWB communication is possible via the antenna and control circuit assembly.

In principle, the use of UWB radio signals for different applications is known from the prior art. However, UWB transceivers that are ready for the market are only recently available for use in end-user products.

Ultra-broadband technology has long been known for its basic principles. However, she is only younger The past, not least due to liberalization of regulation, has become accessible for use outside special applications.

Ultra-wideband technology is short-range radio communication based on emitting short bursts of signals that cover a wide variety of frequencies over a wide frequency bandwidth. The width of the covered frequency bands depends in particular on the regulatory requirements of the corresponding territorial area. The information transfer is not based on UWB carrier frequency modulation. Instead, other methods of modulation are used, such as on / off keying, pulse amplitude modulation, and pulse position modulation.

A disadvantage of UWB communication relative to established LF and / or RF communication is the comparatively high energy requirements of many transceivers currently available for UWB communication.

However, the UWB communication has the principal advantage that due to the emission of pulses, a distance determination by means of a runtime-based approach is possible, which is often referred to with the name of the time-of-flight method. For example, the distance between the UWB antenna and a portable ID transmitter prepared for UWB communication may be determined by sending a UWB signal from the UWB antenna to the portable ID transmitter, a UWB transceiver of the portable ID transmitter. This encoder answers and evaluates a coupled to the UWB antenna of the handle control means detects the detected response signal. This is done by evaluating the past time between sending and receiving. In this example, consideration is given to the distance to the ID transmitter, the processing time within the ID transmitter and the distance from the ID transmitter to the UWB antenna. If, as in this example, the running time is evaluated on the vehicle side, only the Processing time be deposited on the vehicle side within the ID transmitter, so that a corresponding correction of the vehicle-measured time between sending the UWB signal and receiving the UWB response can be made.

Experience has shown that the accuracy of such an UWB-based distance determination is significantly higher than is the case with other methods at the usual intended orders of magnitude of distances. UWB-based distance determination is typically more accurate than distance determination based on signal strength determination of LF signals or triangulation of LF signals. The accuracy is in the order of 10 to 20 cm in the UWB-based distance determinations under good conditions.

The fact that the pure duration of the UWB signal compared to the processing time is relatively short, an additional processing of the signal, for example, for a manipulation of the signal as part of a relay station attack, due to the then unexpectedly high total time between sending a UWB Signal and arrival of the corresponding response can be detected. A compromise, for example by a relay station attack, is therefore possible, if at all, in UWB-based distance determination only with very complex methods.

Another benefit of using the UWB signals is that due to the large number of frequencies used, shading of the signals is very unlikely. This is because at least for some of the simultaneously used frequencies with high probability always a line of sight between transmitter and receiver exists. One reason for this is that due to the high number of different frequencies used, diffraction effects and / or reflections can always be expected for some frequencies.

As already mentioned, the UWB antenna according to the invention is arranged inside the handle.

By placing the UWB antenna within the handle, a solution is provided for elegantly positioning the UWB antenna on the vehicle outside of its sheet metal jacket. The placement of the UWB antenna outside the vehicle's sheet metal jacket results in improved UWB communication. This manifests itself in significantly reducing the impairment of the UWB signal between the vehicle's ID transmitter and UWB antenna and / or between the vehicle's UWB antenna and ID transmitter. The fact that the UWB communication is based on the transmission and reception of signals with very many frequencies in a comparatively wide frequency spectrum, at some frequencies, only a slight deterioration of the signals would be caused by the sheet metal jacket, while other frequencies would be very much affected, especially muted , The associated with the use of a variety of frequencies frequency-dependent different impairment of UWB signals is significantly reduced by the proposed invention, if not completely avoided.

The arrangement of the UWB antenna within a vehicle door handle also has the further advantage that the electronics commonly present in the vehicle door handle can be partially or fully shared or adapted to at least contribute to the control of the UWB antenna. It also provides the ability to provide the UWB antenna along with other electronics, such as an existing LF interface or capacitive and / or inductive electronics, as a common module for a vehicle door handle or within the handle of a vehicle door handle.

It is preferably provided that the UWB antenna and the control circuit are part of a UWB interface. In a specific development it can be provided that the UWB interface is provided as a UWB transceiver, which is positioned in the inner cavity of the handle. According to this development, the UWB antenna is arranged with the associated transceiver circuit and possibly other peripheral circuits within the handle.

The arrangement of the UWB antenna on a vehicle door handle or within a vehicle door handle is associated with the further advantage that an operator who is seeking access to a vehicle usually moves toward the vehicle door handle for this purpose. As a result, radio communication between the ID transmitter, which is in the possession of the operator, and the UWB interface is positively influenced insofar that an impairment, for example due to shading objects, is highly unlikely.

As stated above, the handle of each generic door handle, whether pivoting or stationary, has two end sections, each with associated bearing sections. The gripping portion is disposed therebetween. The gripping section is defined by the accessibility and operability for a user. The gripping portion is corresponding to that portion which is available for grasping or grasping behind. This is particularly the case where there is sufficient clearance between the handle and door panel (or handle support), since at least 3 cm distance between the handle and door panel for a comfortable grip behind are required. Accordingly, the gripping portion at a distance from the handle support, which provides space for the hand or fingers of a user. In contrast, the end sections are not tangible. They run close to the vehicle panel or the underlying handle support and are coupled evenly in the area of the bearing sections with the handle support. According to one development of the invention, the UWB antenna is thus received in the end sections, outside the gripping section. Where exactly the transition between end sections and gripping section runs is determined by the respective design of the door handle. However, an end portion terminates according to this application where a user can grip and manipulate the handle.

A development of the invention is based on the finding that the shielding of the UWB antenna field by the hand or other body parts of a user interferes. The antenna is therefore preferably arranged outside the gripping portion of the handle. Overlapping by the hand of a user engaging the gripping portion is the least likely in this section.

Arranged in this area, the transmitting antenna and receiving antenna can be operated with low risk of interference by the action of the body tissue of a user. The already reduced by the use of UWB technology shadowing of the signals is even better avoided by the positioning of the UWB antenna in the training. The antenna may be completely housed in an end portion outside the gripping portion, but at least the largest part of the antenna is located outside the gripping portion.

To optimize the quality of the signal radiation and the signal reception, it is preferred that the vehicle door handle is at least partially formed with one or more non-metallic materials such that there is a signal path between the antenna and the external environment without metallic shielding. In particular, it can be provided that a door handle casing at least partially made of a non-metallic material, such as a plastic. In an embodiment in which the antenna is arranged in an end portion of the handle, can Preferably, a sheath of this end portion partially, preferably completely, consist of a non-metallic material.

The antenna may be formed outside of the gripping portion and within an end portion completely in the outside of the door panel part of the handle, but it may also, at least partially, in the projecting through the opening in the door panel part of the handle, so be formed in the bearing portions of the end portions , The handle has according to the above description bearing sections, which protrude through the door panel. Accordingly, no door panel is present in this area and the antenna arrangement can be accommodated in a bearing section of the end sections.

In a preferred embodiment of the invention, the door handle is formed with a pivotable handle according to the above description and the antenna is received in the pivot portion of the handle. As described above, in the case of door handles having pivotal handles, the handle has as portions along its longitudinal direction at least one operating portion, a gripping portion and a pivot portion. The mechanical actuation and introduction of force into actuating means in the handle carrier takes place on the actuating section by force transmission of a pulling movement of a user in the region of the gripping section.

In the pivoting portion, overlapping by the hand of a user engaging the gripping portion is least likely. Vehicle door handles with a pivotable handle are usually designed so that, in order to improve the leverage effect and ease of movement, the gripping section is oriented closer to the actuating section than to the pivoting section. A user engaging the gripping portion in the comfortable area will thus place his hand closer to the operating portion than to the pivot portion. This is generally true and largely independent of the concrete design of a door handle. Namely, it is important for optimized power transmission to allow the user's attack as far as possible from the pivot axis and as close to the operating section as possible.

In most door handles, the transitions between pivot portion and gripping portion are fluid, but essential for the development of the invention is that the antenna is at least largely accommodated in the pivoting portion. The antenna is thus accommodated in each case in that half of the handle, to which the pivoting portion forms the end portion.

In a preferred embodiment of the invention, the antenna is designed for UWB signal transmission at a frequency from the frequency range between 30 MHz and 10.6 GHz, preferably between 2.0 GHz and 8 GHz. The corresponding adaptation of the control circuit is preferred part of the invention. The specific choice of sub-ranges of the mentioned frequency ranges depends on the countries in which the use of the door handle according to the invention is provided and which frequency ranges are released in these for UWB communication.

It is particularly preferred if the antenna is arranged as a conductor track on a circuit board. The vehicle door handle may include other electronic components that may be disposed on the same board. It is essential, however, that a board section together with the antenna is arranged in the pivoting section of the door handle. The antenna can also be arranged together with the control circuit on a common board, in which case it is essential that the board is aligned and arranged in the handle so that the antenna is arranged on an end remote from the gripping portion of the board, so that there is a maximum spacing from the gripping portion.

Preferably, the board is formed as at least partially bendable circuit board for positioning the circuit board in the vehicle door handle. It can therefore be provided a printed circuit board which is partially bendable. The regionwise bendability can be achieved for example by material tapers and / or by appropriate choice of material. Due to the region bendability, the circuit board can be used with a certain flexibility in the vehicle door handle and is thus available to a certain extent for differently shaped handles.

It is particularly preferred if the pivot portion is formed as an extension of the gripping portion of the handle and the pivot portion is formed by a portion of the handle which has a length of less than 30% of the total length, preferably less than 20% of the total length of the handle.

The pivoting portion thus represents at most 30% of the length of the handle and is defined as a range which is not encompassed by a user at all during normal operation. Regularly, the area in this section between the door panel and handle is so small that reaching behind by a user is not possible.

It is particularly preferred that the vehicle door handle is designed such that the distance between the handle and handle carrier in the entire gripping portion is greater than in the operating portion and the pivot portion.

The gripping portion is thus defined as the one middle portion of the handle, which has a greater distance to the handle support in each area than the end portions. Preferably, the gripping portion is defined so that the distance between the handle support and handle is at least 3 cm. The remaining portions of the handle then form on one side of the Operating section and on the other side of the pivot section.

According to one aspect of the invention, it is provided that a vehicle door handle as described above is used in an authentication system of a vehicle for authenticating a portable ID transmitter to the vehicle. This is to enable vehicle functions for an operator carrying the portable ID transmitter. The authentication system includes the portable ID transmitter and a vehicle-side authentication device. The portable ID transmitter has at least one first ID transmitter UWB interface and the authentication arrangement has at least one UWB antenna of a first vehicle UWB interface. The first ID transmitter UWB interface and the first vehicle UWB interface are set up for UWB communication with each other.

Another aspect of the invention relates to an authentication system of a vehicle for authenticating a portable ID transmitter to the vehicle for enabling vehicle functions for an operator carrying the portable ID transmitter. The authentication system comprises the portable ID transmitter and a vehicle-side authentication arrangement. The portable ID transmitter has at least a first ID transmitter UWB interface and the authentication arrangement at least a first vehicle UWB interface with a UWB antenna, wherein at least the UWB antenna is disposed within a handle of a vehicle door handle. The first ID transmitter UWB interface and the first vehicle UWB interface are set up for UWB communication with each other. In particular, the use of a vehicle door handle according to one of the embodiments explained above is provided as part of the authentication system.

The term UWB interface refers to an arrangement of elements that meet the requirements for UWB communication with another device set up for UWB communication. For example, a UWB interface may be a UWB transceiver, as has been available for industrial applications for some time.

Thus, a system is proposed which has a UWB antenna arranged in a vehicle door handle as part of a UWB interface of the vehicle and at least one ID transmitter adapted to this vehicle UWB interface. Due to the advantages of the UWB communication explained in connection with the vehicle door handle according to the invention, such a system is able to determine a distance of the ID transmitter with good accuracy and thereby to ensure a high level of security against compromising the distance determination.

In an advantageous embodiment of the authentication system, the first vehicle UWB interface is coupled to a proximity sensor arranged within the vehicle door handle. The first vehicle UWB interface and the proximity sensor are coupled to a first control means. The control means is arranged to control the first vehicle UWB interface and to set it in a communication-ready mode after the first proximity sensor has detected an approach of an operator and communicated the approach of the operator by issuing a proximity signal to the control unit.

In order to implement the activation of the UWB antenna technically, it may be provided, for example, that the first vehicle UWB interface and the UWB antenna are designed as UWB transceivers, which in most of the time are in a state in which they are not ready to transmit and receive located. The first control means is arranged to control the UWB transceiver, that the UWB antenna of the UWB transceiver is set to a ready to receive state and / or a ready to send state. The first vehicle UWB interface will be in Dependent on whether the proximity sensor has detected an approach of the operator in the communication-ready mode. Through this functional coupling of the proximity sensor with the readiness for transmission and / or readiness to receive the first vehicle UWB interface, the period of energy-intensive operation of the first vehicle UWB interface is reduced to situations in which the functionality is probably actually required.

The control means may be, for example, a vehicle-side control unit or the initially explained control circuit for the transmission and reception operation, which is arranged within the handle.

The first proximity sensor may be, for example, an NFC sensor, a capacitive sensor or an inductive switch. But also optical sensors, such as time-of-flight cameras, can be provided. In particular, the capacitive sensor and the inductive sensor have the advantage that they are provided in many currently available vehicle door handles, so that can be used on existing development results and experience. The provision of an NFC sensor, in particular of an NFC transceiver, has the advantage that the NFC functionality can be used to contribute to the improvement of the authorization check, for example in connection with a specially provided NFC chip which the operator carries with it and in particular with an NFC chip, which is part of the ID transmitter. A combination of NFC sensor, capacitive sensor, optical sensor and / or inductive switch is also conceivable.

• In Figur 1a ist schematisch ein erstes Ausführungsbeispiel der Erfindung in einer Ruhestellung gezeigt;
• In Figur 1b ist das Ausführungsbeispiel aus Figur 1a in einer Betätigungsstellung gezeigt.
• In Figur 2a ist schematisch ein zweites Ausführungsbeispiel der Erfindung in einer Ruhestellung gezeigt;
• In Figur 2b ist das Ausführungsbeispiel aus Figur 2a in einer Betätigungsstellung gezeigt.
• In Figur 3 ist eine schematische Ausführung des Authentifizierungssystems gezeigt.
• In Figur 4 ist schematisch ein drittes Ausführungsbeispiel der Erfindung in einer Ruhestellung gezeigt.

The invention will now be explained in more detail with reference to the accompanying figures.

• In FIG. 1a is schematically shown a first embodiment of the invention in a rest position;
• In FIG. 1b is the embodiment of FIG. 1a shown in an operating position.
• In FIG. 2a is schematically shown a second embodiment of the invention in a rest position;
• In FIG. 2b is the embodiment of FIG. 2a shown in an operating position.
• In FIG. 3 a schematic embodiment of the authentication system is shown.
• In FIG. 4 is schematically shown a third embodiment of the invention in a rest position.

In FIG. 1a is shown a handle 1 of a motor vehicle door handle. It is in this embodiment, a motor vehicle door handle with swivel handle. The handle 1 is in the illustrated assembled state on a vehicle door panel 2. Through the door panel extending as a swivel approach trained bearing portion 3 and formed as an actuation approach bearing portion 4 to the inside of the door. On the inside of the door handle carrier 5 is arranged, of which here the pivot bearing 5a and the actuating means 5b are shown. The actuating means 5b are in an electrical or mechanical operative connection with a lock device 6, which causes a door unlocking.

The handle is divided in the representation 1a in the sections a, b and c. Section b illustrates the gripping portion that a user can access to operate the handle. The portion c is the operating portion which is fixedly connected to the actuating lug 4. This section c directs the forces which are exerted on the handle in the region of the gripping section b in the actuating means 5b.

The section a is the pivoting section. A part of the pivot portion a is formed as a pivot projection 3. The swivel attachment 3 is guided through an opening in the door panel 2 and rests in the bearing 5a of the handle carrier. The entire handle is accordingly pivotable about a pivot axis, said axis extending through the bearing 5a. In such a pivoting movement portion c of the handle and the actuating lug 4 are deflected.

Inside the handle 1, a control circuit 10 is arranged, which is coupled to a UWB antenna 11 for bidirectional communication. The antenna 11 and the control circuit 10 form a transceiver for UWB communication. A wiring harness 7 with supply voltage and signal lines is guided out of the handle 1 in the region of the pivot bearing 5 a to the handle carrier 5. In this embodiment, the antenna 11 forms a separate module, separate from the control circuit 10. It is, depending on the design of the handle, however, possible to integrate the control circuit 10 with the antenna 11 together on a board or provide more electronic modules, one of which is a module with the UWB antenna and is arranged in the swivel range (in addition, for example, low-frequency antennas or sensor arrangements can be provided). Depending on the configuration can also be provided that the antenna is designed as a populated antenna.

It is shown that the UWB antenna 11 is completely received in the pivot portion a of the handle 1. In this area, it is unlikely that a user will be involved or surrounded, and accordingly the effectiveness of the transceiver communication will be improved.

FIG. 1b shows an actuation situation, wherein the handle 1 is pivoted about an axis through the pivot bearing 5a, which is effected by the action of a force in the direction of the arrow 12. The actuating means 5b are deflected by the actuating lug 4 and there is a transfer of this deflection to the locking device 6 instead. It can be seen that only the leverage forces will cause the user, at least after some familiarity with the Door handle assembly to select a point of attack on the handle regularly, which is closer to the actuating portion c than at the pivot portion a. This facilitates operation by reducing the required forces. The antenna 11 is then at the lowest point in the handle, because there is an extremely low risk of gripping by a user.

As described above, the arrangements and orientations of the antenna in the pivoting section can be fundamentally varied. In the example shown, it would also be possible to partially immerse the antenna in the pivot projection 3a. In addition, it is also possible to completely accommodate the control device in the swivel neck a, for example, when a board is used in a compact manner in the swivel section a both with antenna applied and with applied control device.

FIGS. 2a and 2b can be seen another embodiment of a vehicle door handle. This differs from the embodiment of the FIGS. 1a and 1b in particular by the proximity sensor 13, which is designed as a capacitive proximity switch in the illustrated embodiment and which is connected to the control circuit 10.

FIG. 3 an embodiment of an authentication system 14 according to the invention can be seen.

The authentication system 14 serves to authenticate an ID transmitter 15 "with respect to a vehicle 16. Fig. 1 shows a situation in which the ID transmitter 15 "is in the possession of an operator 17. With the authentication system 14 according to the invention, the authentication of the portable ID transmitter 15" can be made with respect to the vehicle 16, so that the operator 17, the portable one ID, with vehicle functions such as starting the vehicle 16 or opening one or more of the existing vehicle doors.

The authentication system 14 comprises, in addition to the portable ID transmitter 15 "with an ID transmitter UWB interface 15 ', which has an ID transmitter-side UWB antenna 15, an on-board authentication arrangement 18. The authentication arrangement 18 has at least one first vehicle In the embodiment shown, the first vehicle UWB interface with a UWB antenna is arranged as part of a UWB transceiver within the handle 1 of the vehicle door handle.

The authentication arrangement furthermore has an LF interface (not shown) with at least one first LF antenna and a proximity sensor designed as a capacitive sensor, which in the illustrated exemplary embodiment of FIG FIGS. 2a and 2b is also disposed within the door handle, but may not be present in other embodiments or disposed at another position. In the embodiment shown the FIG. 3 For example, the UWB transceiver, the LF interface and the proximity sensor are coupled to an unillustrated on-vehicle control means. The control means is suitable as a control means of the authentication arrangement 18 to control and monitor the individual components of the authentication arrangement 18 in order to carry out an authentication process completely or partially.

That the FIG. 4 to be taken embodiment of a vehicle door handle according to the invention differs from the in FIG. 2a illustrated embodiment by the position of the antenna. The antenna is arranged in the embodiment shown not in the first end portion but in the second end portion. The appropriate positioning of the antenna can also be used as alternative positioning of the antenna to modify the

Embodiment of FIG. 1 or one of the others advantageous developments of the vehicle door handle according to the invention can be provided.

Claims (17)

Vehicle door handle for arrangement on a motor vehicle, the vehicle door handle having a handle (1) and a handle carrier (5), wherein the handle (1) is mounted in the handle carrier (5),
the handle (1) being in the form of an elongate body, having a first end section (a) and a second end section (c) of the handle (1), a gripping section (b) arranged between the end sections in the middle section of the handle (1), wherein the first end portion (a) and the second end portion (c) each have bearing portions,
wherein the bearing portions of the first end portion (a) and the second end portion (c) protrude into the handle support (5) and are stored there,
wherein an antenna (11) is arranged in an inner cavity of the handle (1),
characterized in that
the antenna (11) is designed as a UWB antenna for UWB signal transmission in a UWB frequency range, and a control circuit (10) for transmitting and receiving operation is coupled to the antenna (11). Vehicle door handle according to claim 1, characterized in that the control circuit (10) in the inner cavity (1) is arranged and has signal lines, which are guided to the handle support (5). Vehicle door handle according to claim 1 or claim 2, characterized in that the vehicle door handle at least is partially formed with one or more non-metallic materials such that a signal path from the UWB antenna (11) is provided to the environment without metallic shielding. Vehicle door handle according to one of the preceding claims, characterized in that the antenna (11) outside of the gripping portion (b) in an end portion (a, c) of the handle (1) is accommodated. Vehicle door handle according to claim 4, characterized in that an enclosure of the antenna (11) receiving end portion (a, c) consists partially or completely of one or more non-metallic materials. Vehicle door handle according to claim 4 or claim 5, wherein the handle (1) is movably mounted in the handle carrier (5),
wherein the first end portion (c) of the handle (1) is formed as an operating portion and the second end portion (a) is formed as a pivot portion, so that pivot portion and operating portion are arranged at opposite ends of the handle (1),
wherein the bearing portion of the actuating portion protrudes into the handle support (5) and is in mechanical operative connection with actuating means (5b) for transmitting movement of the handle (1) to the actuating means (5b),
wherein the bearing portion of the pivot portion is received in a pivot bearing of the handle carrier, so that the handle (1) is pivotable in the pivot bearing in a guided by bearing portion and pivot bearing movement,
wherein the antenna (11) is received in the pivot portion of the handle (1). Vehicle door handle according to one of the preceding claims, wherein the antenna (11) for UWB signal transmission in a UWB frequency band from the frequency range between 30 MHz and 10.6 GHz, preferably between 2.0 GHz and 8 GHz is formed. Vehicle door handle according to one of the preceding claims, wherein the antenna (11) is formed as a conductor track on a circuit board. Vehicle door handle according to claim 8, wherein the antenna (11) is arranged together with the control circuit (10) on a common board Vehicle door handle according to claim 9, wherein the board is formed as at least partially bendable circuit board for positioning the circuit board in the vehicle door handle. Vehicle door handle according to one of claims 1 to 7, wherein the antenna (11) as a separate component spaced from the control circuit (10) is formed and / or the antenna is formed as a populated antenna. A vehicle door handle according to any one of the preceding claims, wherein the end portions are formed as an integral extension of the gripping portion (b), each end portion being formed by a portion of the handle (1) having a length of less than 30 percent Overall length of the handle (1), preferably less than 20 percent of the total length of the handle (1). Vehicle door handle according to one of the preceding claims, wherein the distance between the handle (1) and the handle support (5) in the entire gripping portion (b) is greater than in the end portions. Vehicle door handle according to one of the preceding claims, wherein in the inner cavity of the handle (1) a, preferably capacitive or inductive, proximity sensor (13) is arranged, and wherein the control circuit (10) and the proximity sensor are coupled together, and wherein the control circuit ( 10) is arranged to control the antenna (11) and put it in a communication-ready mode after the first proximity sensor (13) has detected an approach of an operator (4). Use of a vehicle door handle according to any one of the preceding claims in an authentication system (14) of a vehicle (16) for authenticating a portable ID transmitter (15 ") to the vehicle release vehicle (16) for an operator (17) rendering the portable one ID transmitter (15 ") with it,
wherein the authentication system (14) comprises the portable ID transmitter (15 ") and an on-board authentication device (18), wherein the portable ID transmitter (15") at least one first ID transmitter UWB interface and the authentication device at least one UWB Antenna of a first vehicle UWB interface, and wherein the first ID transmitter UWB interface and the first vehicle UWB interface for UWB communication are set up with each other. An authentication system (14) of a vehicle (16) for authenticating a portable ID transmitter (15 ") to the vehicle authorization release vehicle (16) for an operator (17) carrying the portable ID transmitter (15") .
wherein the authentication system (14) comprises the portable ID transmitter (15 ") and an on-board authentication arrangement (18), wherein the portable ID transmitter (15") has at least one first ID transmitter UWB interface (15, 15 ') and the authentication arrangement (18) comprising at least a first vehicle UWB interface with a UWB antenna (11), wherein the UWB antenna (11) within a handle (1) of a vehicle door handle, preferably a vehicle door handle according to one of claims 1 to 14, and wherein the first ID transmitter UWB interface (15, 15 ') and the first vehicle UWB interface for UWB communication are arranged with each other. The authentication system (14) of claim 16, wherein the first vehicle UWB interface is coupled to a proximity sensor (13) disposed within the handle (1) of the vehicle door handle, the first vehicle UWB interface and the proximity sensor (13) having a first control means (10) are arranged, which is arranged to control the first vehicle UWB interface and put in a communication-ready mode after the first proximity sensor (13) has detected an approach of an operator.

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