WO2022033683A1

WO2022033683A1 - Screw tower integrated coaxial connection method

Info

Publication number: WO2022033683A1
Application number: PCT/EP2020/072712
Authority: WO
Inventors: Jouni Tapio MÄKI; Jouni Pennanen
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2022-02-17

Abstract

A signal transmission structure (1) for electronic devices (10), such as smartphones, arranged as a coaxial connector (7) to fit around a first element (4) that is configured to connect a first panel (2) and a second panel (3) of the device (10), such as an outer frame to a printed circuit board, wherein the connector (7) is configured to connect to a signal line (6) configured to transmit electromagnetic signals, preferably radiofrequency (RF) signals, arranged on or around a protrusion (8) that also serves as a receiver for first element (4) on the first panel (2). The connector (7) may comprise conductive portions (7a) and dielectric portions (7b) arranged coaxially with the first element (4) along a longitudinal axis (A).

Description

SCREW TOWER INTEGRATED COAXIAL CONNECTION METHOD

TECHNICAL FIELD

The disclosure relates to an electronic device comprising a at least two panels, and at least one signal transmission structure configured to transmit a signal from one panel to another panel.

BACKGROUND

The amount of electric signalling, and hence energy transfer between different electronic blocks, in electronic devices has been increasing over the last years. In current devices, there is a vast number of sensors, antennas, cameras, switches, batteries, and secondary printed circuit boards (PCB) which all need to be connected to the main electrical engine board of the device, and which have to be arranged such that they do not influence each other negatively.

Common solutions for facilitating such increased signalling is to use flexible printed circuit boards (FPC), cabling, coaxial cables, and similar for signal transmission. However, such solutions all face several problems such as the minimum amount of space required being relatively large, grounding issues, bending problems, and limited possible usage of electronic components with flexible printed circuits.

As an example of such problems, coaxial cables require sufficient free space being available within the device. Furthermore, the bending radius of coaxial cables is large, relative to the available dimensions of the device. Grounding to aluminium parts is unreliable due to oxidation, and the cable screen is easily damaged during the manual hand assembly process.

A particular problem arises with antenna signal transmissions to circuit boards, which requires shielded cables with shielded connectors to prevent impedance mismatch and loss of signal. Such connections are typically made by coaxial cable connectors or springs. This requires sufficient room for the connectors to be reserved within the device housing, mating parts pre-arranged at suitable locations on the circuit board, as well as mechanical support on top of the connectors to prevent the connectors from opening. Such complex arrangements not only require too much space within the limited volume of a portable device but can also cause difficulties during the mating process of the device, which often requires extra room arranged for safety and guidance upon assembly.

Hence, there is a need for providing more flexible and durable signal transmission solution that requires less space within a device housing and ensures an easier assembly process.

SUMMARY

It is an object to provide an electronic device having an improved signal transmission structure. The foregoing and other objects are achieved by the features of the independent claim. Further implementation forms are apparent from the dependent claims, the description, and the figures.

According to a first aspect, there is provided a signal transmission structure comprising a first panel and a second panel, the second panel being attached to the first panel by at least one first element configured to at least partially interlock with the first panel and the second panel, and a signal transmission arrangement configured to transmit a signal from the first panel to the second panel. The signal transmission arrangement comprises a signal line arranged on the first panel, and a coaxial connector configured to interconnect the signal line to a first area on the second panel. The connector extends coaxially with the first element along a longitudinal axis.

Integrating the signal transmission arrangement as a connector arranged coaxially with a connection element between panels ensures not only an improved connection for signal transmission between two panels with enhanced durability, but also reduces mechanical complexity by not needing a mating part and process, in contrast to existing solutions, such as RF connectors on a PCB. The integrated solution further provides a reliable guidance feature for the connector to the correct contact location with the signal line, thereby not only minimizing steps needed but also the possibility for error upon manual assembly of an electronic device.

By providing the connector in a coaxial arrangement with the first element that interlocks with the panels, the connector is supported mechanically and it does require any additional space within the device as it uses the existing interlocking element(s) within a device (e.g. screw towers), leaving more free and available space for additional components on and around the panels (such as PCB/FCP), and/or allowing the electronic device to be kept as thin as possible since no additional space is necessary for accommodating a signal transmission arrangement.

The solution thereby lowers costs by simplifying the manufacture/assembly process as well as number and complexity of parts needed, while still improving connection durability of the signal transmission arrangement.

In a possible implementation form of the first aspect, the connector comprises at least one conductive portion configured to transmit the signal from the signal line on the first panel to the first area on the second panel and at least one dielectric portion arranged adjacent to the conductive portion and configured to insulate the conductive portion from any element arranged on an opposite side of the dielectric portion, thereby ensuring improved connection quality.

In a possible implementation form of the first aspect, the connector furthermore comprises a grounding portion configured to be in contact with the first panel, with the dielectric portion being configured to insulate the conductive portion from the grounding portion, thereby ensuring further improved connection quality.

In a possible implementation form of the first aspect, a first main plane Pl of the first panel and a second main plane P2 of the second panel extend in parallel, the first element extending at angles >0° to the first main plane Pl and to the second main plane P2, preferably at an angle of 90° to the first main plane Pl and to the second main plane P2. This provides a good connection quality between panels and ensures a thin and ergonomic form factor for the electronic device.

In a possible implementation form of the first aspect, the connector comprises one discrete component, thereby reducing mechanical complexity and parts needed for assembly by not needing a mating part and process.

In a possible implementation form of the first aspect, the first panel comprises a protrusion configured to accommodate the connector and to receive and interlock with the first element and/or to keep a first main plane of the first panel away from a second main plane of the second panel, thereby reducing the need for additional parts for connecting to the first element and further providing mechanical support for the connector.

In a possible implementation form of the first aspect, the first element is an at least partially elongated element and configured to, at a first end of the elongated element, interlock with the first panel, and configured to, at a second end of the elongated element, maintain the second panel in a fixed position relative the first panel, thereby ensuring good and durable connection between panels.

In a possible implementation form of the first aspect, the first element comprises at least one fastening means configured to interlock with correspondingly arranged fastening means on at least one of the first panel and the second panel, thereby ensuring further improved connection stability between panels.

In a possible implementation form of the first aspect, the first end of the first element comprises a threaded surface configured to interlock with a correspondingly threaded recess arranged in the first panel, and the second end of the first element comprises a screw head configured to abut a surface of the second panel, thereby providing a simple mechanical solution for connection that also reduces risk of manufacturing errors. In a possible embodiment the threaded recess is arranged within the protrusion which further improves connection durability and provides an integrated mechanical structure.

In a possible implementation form of the first aspect, the connector, the first element, and the protrusion extend coaxially along the longitudinal axis, allowing for a precise assembly.

In a possible embodiment the longitudinal axis extends between a first main plane Pl of the first panel and the second main plane P2 of the second panel, ensuring a durable mechanical structure of the device.

In a possible implementation form of the first aspect, the connector is configured to enclose at least a portion of the protrusion along the direction of the longitudinal axis, thereby providing an integrated signal transmission arrangement using a thin, separate connector that can conform to the form of the protrusion and ensure enhanced mechanical stability when assembled.

In another possible implementation form of the first aspect, the connector is configured to be enclosed by the protrusion along the direction of the longitudinal axis, which provides mechanical protection for the connector by the protrusion, and allows for inserting the connector from outside upon assembly.

In a possible implementation form of the first aspect, the connector comprises a circumferential wall extending between a first open end and a second open end, the second open end being configured to connect conductively to the signal line and the first area on the second panel, thereby ensuring good connection quality without requiring additional space within the device housing.

In a possible implementation form of the first aspect, the conductive portion(s) and the dielectric portion(s) of the connector are arranged in discrete, circumferentially extending layers, each layer extending coaxially with the protrusion of the first panel, such that a first conductive portion is conductively insulated from the protrusion by a first dielectric portion. This arrangement provides flexibility for using multiple layers in a simple mechanical structure, using the protrusion as mechanical support.

In a possible implementation form of the first aspect, a second conductive portion is conductively insulated from the first conductive portion by a second dielectric portion, ensuring improved connection quality.

In a possible implementation form of the first aspect, the connector 7 comprises a plurality of conductive portions 7a and a plurality of dielectric portions 7b, the plurality of conductive portions 7a and the plurality of dielectric portions 7b being alternately arranged in discrete, circumferentially extending layers around a longitudinal axis A, thus providing additional flexibility for complex connections while minimizing additional space required.

In a possible implementation form of the first aspect, the connector 7 is fixed to the second panel 3 by means of adhesive or soldering, ensuring a mechanically solid connection and less manufacturing steps.

In a possible implementation form of the first aspect, the first element does not transmit signals from the signal line on the first panel to the first area on the second panel, thereby ensuring proper insulation for the connection between panels.

In a possible implementation form of the first aspect, the first element is conductively isolated from the conductive portion of the connector by dielectric adhesive, ensuring improved insulation for the connection between panels.

In a possible implementation form of the first aspect, the signal transmission arrangement comprises one signal line, the signal line preferably being one of a stripline or a microstrip line, thereby reducing the space needed for implementing the signal line in a device while ensuring good signal transmission quality. In a possible implementation form of the first aspect, the signal transmission arrangement comprises at least two signal lines, the signal lines preferably extending within a flexible printed cable or being printed directly on the first panel, providing for additional signal transmission capacity.

In a possible embodiment the signal lines are arranged in one plane. In another possible embodiment the signal lines are arranged in multiple parallel planes, providing flexibility for accommodating to different device form factors.

In a possible embodiment each signal line is insulated from any adjacent signal line by a dielectric volume extending within the first panel, ensuring good signal transmission quality.

In a possible implementation form of the first aspect, the signal line is configured to transmit electromagnetic signals, preferably radiofrequency signals, AC current, or DC current, allowing the solution to be applied for signal transmission to a variety of components.

In a possible embodiment, the electromagnetic signals are within the radiofrequency range, allowing the signal transmission structure to be used for e.g. antennas.

In a possible implementation form of the first aspect, the first panel and the second panel of the signal transmission structure are functional and/or mechanical elements of the electronic device.

In a possible implementation form of the first aspect, the first panel is a frame or chassis element and the second panel is a printed circuit board, the signal line(s) of the signal transmission structure being configured to transmit signals to components arranged on the printed circuit board, via at least one first area on the printed circuit board, allowing the panels to be an already existing and necessary part of the electronic device such that no additional elements are needed. These and other aspects will be apparent from the embodiments described below.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following detailed portion of the present disclosure, the aspects, embodiments and implementations will be explained in more detail with reference to the example embodiments shown in the drawings, in which:

Fig. 1 shows a partial perspective view of an electronic device comprising a signal transmission structure in accordance with an embodiment of the present invention;

Figs. 2 A and 2B show a cross-section of a signal transmission structure in accordance with an embodiment of the present invention;

Fig. 2C shows a perspective view of a connector of a signal transmission structure in accordance with a further embodiment of the present invention;

Fig. 3 shows a partial perspective view of an electronic device comprising a signal transmission structure in accordance with an embodiment of the present invention;

Fig. 4A shows a cross-section of a signal transmission structure in accordance with a further embodiment of the present invention;

Figs. 4B, 4C, 4D show perspective views of a connector and a corresponding protrusion of a signal transmission structure in accordance with a further embodiment of the present invention;

Fig. 5 shows a partial perspective view of an electronic device comprising a signal transmission structure in accordance with a further embodiment of the present invention; and Fig. 6 shows a cross-section of a signal transmission structure in accordance with a further embodiment of the present invention.

DETAILED DESCRIPTION

Fig. 1 shows an electronic device 10 comprising at least a first panel 2 and a second panel 3. The first panel 2 and the second panel 3 may be functional and/or mechanical elements of the electronic device 10. In some embodiments, the first panel 2 may be part of an outer housing of the device 10, such as a chassis element or a back cover extending on an opposite side to the display, whereby the second panel 3 may be an inner frame such as a printed circuit board (PCB) or flexible printed circuit board (FPC) supporting components such as the main engine board. The second panel 3 is attached to the first panel 2 by at least one first element 4 configured to at least partially interlock with the first panel 2 and the second panel 3.

The signal transmission structure 1 further comprises a signal transmission arrangement configured to transmit a signal from the first panel 2 to the second panel 3. The signal transmission arrangement comprises at least one signal line 6 arranged, at least partially, on the first panel 2 and a connector 7 extending coaxially with the first element 4 along a longitudinal axis A and configured to interconnect the signal line 6 to a first area 3a on the second panel 3.

In some embodiments the signal line 6 may be arranged separately from the first panel 2, while in other embodiments the signal line 6 may be integrated partially or fully within the first panel 2. In some embodiments the signal line 6 may extend within a flexible cable printed on the first panel 2, while in other embodiments the signal line 6 may be printed directly on the first panel 2.

In some embodiments the signal transmission arrangement may comprise multiple signal lines 6, each of the signal lines 6 extending within a flexible printed cable or being printed directly on the first panel 2. In some embodiments the signal lines 6 are arranged in one plane or multiple parallel planes. In some embodiments each signal line 6 is insulated from any adjacent signal line 6 by a dielectric volume extending within the first panel 2.

The signal line 6 may comprise a stripline, microstrip line, or differential signal lines. The signal line 6 may further be configured to transmit electromagnetic signals, AC current, or DC current. In one embodiment, the electromagnetic signals are within the radiofrequency (RF) range. When the signal line 6 is a stripline or microstrip line, it may be preferable to match the impedance of the signal line 6 to a value of 50 Ohms. When the signal line 6 instead comprises differential signal lines, it may be preferable to match the impedance of the signal line 6 to a value of 100 Ohms. Nevertheless, the required impedance matching of the conductive signal line 6 depends on the system comprising the signal line 6, wherefore any suitable impedance value is possible.

In embodiments wherein the second panel 3 is a printed circuit board (PCB) or flexible printed circuit board (FPC), the signal line(s) 6 of the signal transmission structure 1 may be configured to transmit signals to components arranged on the printed circuit board 3, via at least one first area 3 a on the printed circuit board 3.

As illustrated in Figs. 2A and 2B, the first panel 2 may comprise a protrusion 8. The protrusion 8 may be a separate structure with a base portion embedded within the structure of the first panel 2 or may also be integrated into the first panel 2. At least one signal line

6 may further be arranged at the protruding end of the protrusion 8. In an embodiment illustrated on Fig. 2A, the protrusion 8 may be configured to accommodate the connector

7 on its outer circumference, and to receive and interlock with the first element 4 in its inner recess 9. In an embodiment grounding may be arranged by contact on the sides of the protrusion 8. In an embodiment, an insulating layer may be arranged, e.g. by printing, on the protrusion 8 for conductively insulating the signal line(s) 6 from the rest of the protrusion 8.

In an embodiment the connector 7, the first element 4, and the protrusion 8 all extend coaxially along the longitudinal axis A. In some embodiments, as illustrated e.g. in Fig. 1 and Fig. 2C, the connector 7 may comprise one discrete component. As illustrated in Fig. 2 A, the first element 4 may be an at least partially elongated element and may be configured to interlock with the first panel 2 at a first end 4a, and to maintain the second panel 3 in a fixed position relative the first panel 2 at a second end 4b. The first element 4 may further comprise fastening means configured to interlock with correspondingly arranged fastening means on at least one of the first panel 2 and the second panel 3. The fastening means may comprise riveting, adhesive applied on the first element 4, a nut and bolt connection, or snap locking among others, depending on factors such as axial force between first panel 2 and second panel 3, size, difficulty of assembly (production), rework, reliability and connection combination to complementary fastening means.

In an embodiment, the first element 4 is implemented as a screw to ensure sufficient axial force, wherein the first end 4a of the first element 4 comprises a threaded surface (not shown) configured to interlock with a correspondingly threaded (not shown) recess 9 arranged in the first panel 2, and wherein the second end 4b of the first element 4 comprises a screw head configured to abut a surface of the second panel 3. In an embodiment, as illustrated in Fig. 2, the threaded recess 9 is arranged within the protrusion 8.

As further shown in Fig. 2A, in some embodiments the connector 7 may comprise at least one conductive portion 7a configured to transmit the signal from the signal line 6 on the first panel 2 to the first area 3a on the second panel 3; and at least one dielectric portion 7b arranged adjacent to the conductive portion 7a and configured to insulate the conductive portion 7a from any element (such as grounding, another conductive portion or a chassis element or protrusion wall) arranged on an opposite side of the dielectric portion 7b. In some embodiments the connector 7 may furthermore comprise a grounding portion 7c configured to be in contact with the first panel 2, in which embodiments the dielectric portion 7b is configured to insulate the conductive portion 7a from the grounding portion 7c.

In an embodiment, as shown in Fig. 2 A, a first main plane Pl of the first panel 2 and a second main plane P2 of the second panel 3 may extend in parallel. In an embodiment, the longitudinal axis A extends between the first main plane Pl and the second main plane P2. In an embodiment, the longitudinal axis A extends at angles >0° to the first main plane Pl and to the second main plane P2, preferably at an angle of 90° to the first main plane Pl and to the second main plane P2.

In an embodiment, as also shown in Fig. 2 A, the protrusion 8 may further be configured to keep the first main plane Pl of the first panel 2 away from a second main plane P2 of the second panel 3.

In an embodiment, as also shown in Fig. 2A, the connector 7 may be configured to enclose at least a portion of the protrusion 8 along the direction of the longitudinal axis A.

As illustrated in Fig. 2C, the connector 7 may comprise a circumferential wall 7d extending between a first open end 7e and a second open end 7f of the connector 7. In an embodiment, the second open end 7f may be configured to connect conductively to the signal line 6 and the first area 3 a on the second panel 3.

Figs. 3-4 illustrate a further possible embodiment of a signal transmission structure 1 comprising a signal transmission arrangement configured to transmit a signal from the first panel 2 to the second panel 3. F eatures that are the same or similar to corresponding features previously described or shown herein are denoted by the same reference numeral as previously used for simplicity.

As shown in Fig. 3, the signal transmission arrangement comprises a signal line 6 arranged on the first panel 2 and a connector 7 arranged coaxially with a first element 4 along a longitudinal axis A and configured to connect a signal line 6 to a first area 3 a on the second panel 3. The first panel 2 may also comprise a protrusion 8 configured to accommodate the connector 7 on its outer circumference, and to receive and interlock with the first element 4 in its inner recess 9 as illustrated in Fig. 4A.

In this embodiment, as illustrated in Fig. 4B, the connector 7 may comprise a circumferential wall 7d extending between a first open end 7e and a second open end 7f. The connector 7 may further comprise at least one conductive portion 7a configured to transmit the signal from the signal line 6 on the first panel 2 to the first area 3 a on the second panel 3; and at least one dielectric portion 7b arranged adjacent to the conductive portion 7a and configured to insulate the conductive portion 7a from any element arranged on an opposite side of the dielectric portion 7b.

As shown in Fig. 4B, the conductive portions 7a and the dielectric portions 7b of the connector 7 may be arranged in discrete, circumferentially extending layers. As illustrated in Fig. 4A, each layer may extend coaxially with a protrusion 8 of the first panel 2, such that a first conductive portion 7a is conductively insulated from the protrusion 8 by a first dielectric portion 7b. In an embodiment, as illustrated in Figs. 4A and 4B, the connector 7 comprises a second conductive portion 7a conductively insulated from the first conductive portion 7a by a second dielectric portion 7b. In further possible embodiments, the connector 7 may comprise a plurality of conductive portions 7a and a plurality of dielectric portions 7b alternately arranged in discrete, circumferentially extending layers around the longitudinal axis A. Any number of conductive portions 7a and dielectric portions 7b is possible, the configuration depends on the components and form factor of the electronic device 10, the first panel 2 and/or the second panel 3. The embodiments shown in the Figs, are only illustrative examples.

As shown in Figs. 4C and 4D, the protrusion 8 arranged on the first panel 2 may be arranged to provide a support for the connector 7 and to ensure connection of the conductive portion(s) 7a to correspondingly arranged signal line(s) 6 on the first panel 2, as illustrated in Fig. 4 A. The signal lines 6 on the first panel 2 may further be arranged to ensure that the conductive portions 7a are conductively insulated from each other when connecting to the signal lines 6 via sliding the connector 7 onto the protrusion 8, as illustrated in Fig. 4A. In a possible embodiment (not shown), the connector 7 may be fixed to the second panel 3 by means of adhesive or soldering.

Figs. 5 to 6 illustrate a further possible embodiment of a signal transmission structure 1 comprising a signal transmission arrangement arranged as an insert in the first panel 2 and configured to transmit a signal from the first panel 2 to the second panel 3. Features that are the same or similar to corresponding features previously described or shown herein are denoted by the same reference numeral as previously used for simplicity.

In this embodiment, the connector 7 comprises conductive portion 7a and a separate dielectric portion 7b, both arranged coaxially with a first element 4 along a longitudinal axis A as shown in Fig. 5. Both the conductive portion 7a and the dielectric portion 7b may be configured to be enclosed by a protrusion 8 arranged on the first panel 2, along the direction of the longitudinal axis A, wherein the dielectric portion 7b may be inserted between the conductive portion 7a and the wall of the protrusion 8, and the conductive portion 7a may be arranged adjacent to the first element 4 upon assembly, as shown in Fig. 6.

The signal transmission arrangement may also comprise a signal line 6 as described above, arranged in the first panel 2, wherein the conductive portion 7a may be configured to connect the signal line 6 to a first area 3a on the second panel 3. For this connection, the conductive portion 7a may be arranged with an enlarged base configured to protrude below the dielectric portion 7b arranged around the conductive portion 7a to establish secure contact with the signal line 6 on the first panel 2, as shown in Fig. 6. In a further embodiment, grounding may be arranged (not shown) on the protruding end of the protrusion 8, near the first area 3a, conductively insulated from the conductive portion 7a by the dielectric portion 7b. This ensures that the signal and grounding within the signal transmission arrangement are insulated from each other, but still integrated within the same arrangement. In possible embodiments, the first element 4 is arranged not to transmit signals from the signal line 6 on the first panel 2 to the first area 3a on the second panel 3. In a possible embodiment this is achieved by the first element 4 being conductively isolated from the conductive portion 7a of the connector 7 either by dielectric adhesive. In another possible embodiment the first element 4 is conductively isolated from the conductive portion 7a by the wall of the protrusion 8 as shown in Fig. 4A. In another possible embodiment the first element 4 is conductively isolated from the conductive portion 7a by a dielectric portion 7b as described before and shown in Fig. 6.

The various aspects and implementations have been described in conjunction with various embodiments herein. However, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed subject-matter, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage. A computer program may be stored/distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.

The reference signs used in the claims shall not be construed as limiting the scope. Unless otherwise indicated, the drawings are intended to be read (e.g., cross-hatching, arrangement of parts, proportion, degree, etc.) together with the specification, and are to be considered a portion of the entire written description of this disclosure. As used in the description, the terms “horizontal”, “vertical”, “left”, “right”, “up” and “down”, as well as adjectival and adverbial derivatives thereof (e.g., “horizontally”, “rightwardly”, “upwardly”, etc.), simply refer to the orientation of the illustrated structure as the particular drawing figure faces the reader. Similarly, the terms “inwardly” and “outwardly” generally refer to the orientation of a surface relative to its axis of elongation, or axis of rotation, as appropriate.

Claims

1. A signal transmission structure (1) comprising

-a first panel (2) and a second panel (3), said second panel (3) being attached to said first panel (2) by at least one first element (4) configured to at least partially interlock with said first panel (2) and said second panel (3), and

-a signal transmission arrangement configured to transmit a signal from said first panel (2) to said second panel (3), said signal transmission arrangement comprising:

—at least one signal line (6) at least partially arranged on said first panel (2),

—a connector (7) configured to interconnect said signal line (6) to a first area (3 a) on said second panel (3), said connector (7) extending coaxially with said first element (4) along a longitudinal axis (A).

2. The signal transmission structure (1) according to claim 1, wherein said connector (7) comprises at least one conductive portion (7a) and at least one dielectric portion (7b), said conductive portion (7a) being configured to transmit said signal from said signal line (6) on said first panel (2) to said first area (3 a) on said second panel (3), and said dielectric portion (7b) being arranged adjacent to said conductive portion (7a) and configured to insulate said conductive portion (7a) from any element arranged on an opposite side of said dielectric portion (7b).

3. The signal transmission structure (1) according to claim 1 or 2, wherein said first panel (2) comprises a protrusion (8), said protrusion (8) being configured to accommodate said connector (7), said protrusion (8) being configured to at least one of receiving and interlocking with said first element (4) or keeping a first main plane (Pl ) of said first panel (2) away from a second main plane (P2) of said second panel (3).

4. The signal transmission structure (1) according to any one of the previous claims, wherein said first element (4) is an at least partially elongated element and configured to, at a first end (4a) of said elongated element, interlock with said first panel (2), and configured to, at a second end (4b) of said elongated element, maintain said second panel (3) in a fixed position relative said first panel (2).

5. The signal transmission structure (1) according to claim 3 or 4, wherein said first element (4) comprises at least one fastening means configured to interlock with correspondingly arranged fastening means on at least one of said first panel (2) and said second panel (3).

6. The signal transmission structure (1) according to any one of claims 3 to 5, wherein said connector (7), said first element (4), and said protrusion (8) extend coaxially along said longitudinal axis (A).

7. The signal transmission structure (1) according to claim 6, wherein said connector (7) is configured to enclose at least a portion of said protrusion (8) along the direction of said longitudinal axis (A).

8. The signal transmission structure (1) according to claim 6, wherein said connector (7) is configured to be enclosed by said protrusion (8) along the direction of said longitudinal axis (A).

9. The signal transmission structure (1) according to any one of the previous claims, wherein said connector (7) comprises a circumferential wall (7d) extending between a first open end (7e) and a second open end (7f), said second open end (7f) being configured to connect conductively to said signal line (6) and said first area (3a) on said second panel (3).

10. The signal transmission structure (1) according to any one of claims 3 to 9, wherein said conductive portion(s) (7a) and said dielectric portion(s) (7b) of said connector (7) are arranged in discrete, circumferentially extending layers, each layer extending coaxially with said protrusion (8) of said first panel (2), such that a first conductive portion (7a) is conductively insulated from said protrusion (8) by a first dielectric portion (7b).

11. The signal transmission structure (1) according to claim 10, wherein a second conductive portion (7a) is conductively insulated from said first conductive portion (7a) by a second dielectric portion (7b).

12. The signal transmission structure (1) according to any one of the previous claims, wherein said first element (4) does not transmit signals from said signal line (6) on said first panel (2) to said first area (3 a) on said second panel (3).

13. The signal transmission structure (1) according to any one of the previous claims, wherein said signal transmission arrangement comprises one signal line (6), said signal line (6) preferably being one of a stripline or a microstrip line.

14. The signal transmission structure (1) according to any one of claims 1 to 12, wherein said signal transmission arrangement comprises at least two signal lines (6), said signal lines (6) preferably extending within a flexible printed cable or being printed directly on said first panel (2).

15. The signal transmission structure (1) according to any one of the previous claims, wherein said signal line (6) is configured to transmit electromagnetic signals, preferably radiofrequency signals, AC current, or DC current.

16. An electronic device (10) comprising the signal transmission structure (1) according to any one of claims 1 to 15, the first panel (2) and the second panel (3) of said signal transmission structure (1) being at least one of functional or mechanical elements of said electronic device (10).

17. The electronic device (10) according to claim 16, wherein said first panel (2) is a frame or chassis element and said second panel (3) is a printed circuit board, and the signal line(s) (6) of said signal transmission structure (1) is configured to transmit signals to components arranged on said printed circuit board (3), via at least one first area (3a) on said printed circuit board (3).

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