EP1614187A1

EP1614187A1 - Reflector, especially for a mobile radio antenna

Info

Publication number: EP1614187A1
Application number: EP04712547A
Authority: EP
Inventors: Maximilian GÖTTL; Stefan Berger
Original assignee: Kathrein Werke KG
Current assignee: Kathrein SE
Priority date: 2003-04-11
Filing date: 2004-02-19
Publication date: 2006-01-11
Also published as: US6930651B2; KR20060008312A; CN2694517Y; WO2004091041A1; WO2004091041A8; TW200507344A; DE10316786A1; US20040201543A1

Abstract

The invention relates to an improved reflector for an antenna, especially for a mobile radio antenna. The inventive reflector is characterised by the following features; the reflector is produced according to a casting method, a deep-drawing method, a stamping method, or a milling method, preferably, with two longitudinal limitations (5) thereof and, preferably, with at least one front sided diagonal limitation (7), and at least one additional integrated functional part (29) is provided on the reflector, said part being produced according to a casting, deep-drawing, stamping or milling method.

Description

Reflector, especially for a cellular antenna

The invention relates to a reflector, in particular for a mobile radio antenna according to the preamble of claim 1.

Mobile radio antennas for mobile radio base stations are usually constructed in such a way that a plurality of radiator arrangements located one above the other are provided in front of a reflector plane in the vertical direction. These radiator arrangements, for example, consist of dipoles or patch radiators. These can be radiator arrangements which radiate only in one polarization or, for example, in two mutually perpendicular polarizations and can transmit and receive at the same time. The entire antenna arrangement can be designed for transmission in one band or in two or more frequency bands, for example by using several radiators and radiator groups suitable for the different frequency bands. Depending on the requirement, mobile radio antennas with different length variants are required. The length variants depend, inter alia, on the number of individual radiators or radiator groups to be provided, the same or similar radiator arrangements generally being arranged repeatedly one above the other.

Such an antenna or antenna array comprises a common reflector for all radiator arrangements. This common reflector usually consists of a reflector plate, which can be punched, bent and folded depending on the requirements, for example in order to be able to form a reflector edge region projecting forward from the reflector plane on the two opposite lateral vertical edges. Furthermore, additional sheet metal parts can be soldered onto the reflector if necessary. It is also known to use profiles, for example extruded aluminum profiles, etc., which are also attached to or in front of the reflector level.

For certain applications, complex, complex, three-dimensional functional surfaces are also advantageous or even necessary for the emitter arrangement. In order to create such environmental conditions for the radiator arrangement, many connection and contact points on the reflector have hitherto been necessary. The parts and components used in part also consist of different materials. However, this has a number of disadvantages. On the one hand, the large variety of parts and the associated high assembly costs prove to be disadvantageous. Overall, this results in comparatively high manufacturing costs. Are disadvantageous but also the many contact points. Many contact points can contribute to unwanted intermodulation products. Adequate functional reliability can only be achieved with the highest level of assembly care. On the other hand, the antennas produced in this way are always subject to a restricted function and load-bearing capacity, since the requirements with regard to the undesired intermodulation products may not be met, particularly in the case of poor contact points or unsuitable material combinations. If problems arise in a test run with regard to the checked radiation diagram of an antenna, it cannot be said immediately which contact points may have contributed to the deteriorated intermodulation properties.

The object of the present invention is therefore to create an improved possibility of realizing antennas with high quality properties, and this with a comparatively high quality standard.

The object is achieved according to the features specified in claim 1. Advantageous embodiments of the invention are specified in the subordinate claims.

The solution according to the invention creates an antenna, in particular for the mobile radio sector, which takes the highest quality requirements into account. Unwanted modulation products are avoided or significantly reduced compared to conventional solutions. A significant quality improvement also results from the fact that the additional lines and electrical see components, which are provided separately and are usually housed on the back of the reflector device, are at least partially integrated into the reflector according to the invention.

For this purpose, it is further provided according to the invention that the reflector or, if the reflector consists, for example, of a plurality of reflector modules which can be assembled, that at least one of the reflector modules is formed in one piece, at least in its basic or basic configuration, namely preferably in a casting, deep-drawing or embossing or in a milling process. To some extent, this is also referred to as a master molding process. For example, the reflector module can consist of an aluminum pressure casting or generally of a metal casting or also of a plastic injection molding, which is subsequently provided with a metallized surface on one or at least on two opposite surfaces.

According to the invention it is therefore provided that in a casting, deep-drawing or embossing or e.g. also has a reflector module produced in a milling process, preferably on the back of the reflector opposite the radiator modules, which has further integrated parts or components of further components which are required in particular in connection with an antenna. This enables a further significant integration of functions into the reflector to be carried out. The following sub-functions can be easily integrated into the reflector module, for example:

For example, outer conductor contours for the management of high-frequency signals, e.g. B. chamber line, coaxial line, strip line etc. on the front, but especially on the back of the reflector with. - In the same way, contours for the electromagnetic shielding of assemblies can be formed. Housing parts for HF components such as filters, switches, distributors, phase shifters can also be molded on, so that after the additional functional parts have been installed in these modules, only a cover then has to be attached. In particular with metallized plastic parts as the base for the reflector, suitable measures such as. B. hot stamping, two-component injection molding, laser processing, etching or the like also complete line structures can be integrated ("three-dimensional circuit board"). Finally, interfaces for mounting components for fastening or assembly, as well as interfaces for additional devices, for example in the form of mounting flanges, heat flanges, etc., can also be implemented.

According to a preferred solution, it is further proposed that the functional parts are not provided on an integral reflector, but on one or more reflector modules. In other words, a reflector should consist of at least two reflector modules that can be assembled. In this respect, it is proposed according to a preferred embodiment of the invention to set up antennas with the same or similar function in different length variants with comparatively little effort. The reflector inserts can directions are also used for differently constructed antennas, which can accommodate different radiator or radiator assemblies, for example. Finally, complex, three-dimensional surroundings with functional surfaces in the transverse and / or longitudinal direction or in other directions of the reflector can also be realized with simple means. Such functional areas can, for example, also be realized at an angle to the main axis, ie generally aligned with the vertical extension axis of the reflector.

At the same time, the antenna or reflector design enables a significant reduction in contact points. As a result, the number of parts and the assembly effort can be reduced again, and this with high functional integration.

The reflector preferably has an edge at least on its two long sides or at least on a narrower transverse side, preferably on its two long sides and on its two end faces. If the reflector consists of at least two or more reflector modules that can be assembled, at least one or preferably all reflector modules each have a corresponding edge on the two long sides and on the at least one narrower transverse side. There are therefore not only lateral boundary webs or boundary surfaces rising transversely to the reflector plane on the two opposite vertical side surfaces, but at least on one of the end side surfaces and preferably on both opposite end side surfaces. Each reflector or each reflector module also has at least one firmly integrated central crosspiece, which has at least one upper one and comprises a lower field for radiator arrangements to be used there. Thus, in the case of a reflector or per reflector module, if the reflector is formed from at least two reflector modules, at least two radiator environments are defined, which are generated by an end boundary wall, two sections of the vertical side longitudinal boundaries and the at least one web wall running transversely to the side boundary walls become.

A reflector module designed in this way is then in principle also suitable to be assembled at the end with at least one further reflector module, for example of the same type, to form an entire reflector arrangement with a greater vertical extent.

In a preferred embodiment it is provided that a final reflector consists of at least two reflector modules assembled with the same orientation. In an alternative embodiment of the invention, it is also possible to assemble two reflector modules on the end face in such a way that the two reflector modules are aligned with respect to one another with respect to their basic shape. This assembly proves to be particularly advantageous when the two opposite end faces are designed differently, that is, only one end face is suitable for the actual assembly with a next reflector module.

Finally, reflector modules with different designs but with a comparable basic structure, as described above, can also be assembled.

As is known, the forces acting on a not to underestimate the reflector and operating loads caused by the effects of force, e.g. vibrations, wind and storms. Such loads naturally occur particularly strongly at the connection point in a reflector arrangement according to the invention using at least two modules assembled on the end face. At the same time, however, moving and undefined contacts to avoid undesired intermodulation problems should also be excluded.

In a particularly preferred embodiment of the invention it is therefore provided that the corresponding end walls are correspondingly adapted for the assembly of at least two reflector modules and, for this purpose, preferably have fastening points or fastening points which are offset from one another in two planes. This makes it possible, on the one hand, to transmit or record comparatively large moments and at the same time to implement functionally reliable electrical contact points. The two reflector modules can be electrically / galvanically contacted in the area of their assembled end walls, or they can also be connected to one another in an electrically isolated manner, for example by interposing an insulating intermediate layer, for example a plastic layer or an other dielectric. A damper material can preferably also be used for the interposition of such an insulating layer, as a result of which certain vibrations of the two reflector module halves to one another are possible to a limited extent even in the event of a strong storm. This therefore serves for increased mechanical security.

The mentioned offset level of the attachment points serves also to the fact that there is no accumulation of shape deviations at the connection interface or, if necessary, can be compensated for comparatively easily, that is, in other words, manufacturing tolerances can be compensated for. Should it be necessary for the optimization of the radiation pattern of an antenna that additional metallic elements have to be attached at certain points in the reflector, then in a further development of the invention these additional elements can be made, for example, in the form of electrically conductive strips, webs etc. by means of separate ones Holding devices, preferably electrically non-conductive and preferably made of plastic or another dielectric, are used, which are attached to the existing intermediate webs or side boundary wall sections and between which the additional metal elements to be inserted can then be hung. This capacitive anchoring in turn prevents undesired intermodulation products.

The invention is explained in more detail below with reference to drawings. The following show in detail:

Figure 1 is a schematic plan view of a reflector consisting of two reflector modules arranged vertically one above the other;

Figure 2 is a perspective view of two arranged in the vertical direction to each other

Reflector modules before assembly;

FIG. 3a: an enlarged perspective detail representation to illustrate the design and assembly of two reflector modules on their facing end boundary section;

Figure 3b: a corresponding representation to figure

3a, but after successful assembly of two reflector modules on the front;

FIG. 4: a representation corresponding to FIG. 3, but viewed from the rear;

FIG. 5: a perspective cutout representation of the reflector module with additional, preferably dielectric holding and fastening elements for receiving further beam shaping parts in the form of strips, rods, etc .;

FIG. 6: a perspective rear view of a reflector module with molded functional parts;

FIG. 7 shows a cross-sectional view through the reflector in the region of the functional part shown in FIG. 3 and provided on the rear of the reflector; and

Figure 8: another partial perspective rear view of a reflector module with a differently shaped functional part. FIG. 1 shows a schematic plan view of a reflector 1 which, in the exemplary embodiment shown, is formed from two reflector modules 3 assembled on the end face, in each of which four radiator arrangements 2 are arranged one above the other in the vertical direction. The radiator modules shown are modules constructed in electrical terms as cross radiators, which radiate in two mutually perpendicular polarizations, ie can transmit and receive. These are preferably X-shaped radiators in which the polarization planes are oriented at a plus 45 'to a minus 45 "angle with respect to the horizontal or vertical. The specific type of radiator shown or indicated is, for example, from In this respect, reference is made to this prior publication and made the content of the present application, but instead any number of other emitter arrangements, for example in the manner of dipole squares, cross-emitters, simply polarized dipole emitters or other emitters or emitter devices including patch spots.

As can be seen in particular from the perspective illustration according to FIG. 2, each reflector module has two longitudinal side boundaries 5 and two front transverse side boundaries 7, which are formed in the manner of a reflector boundary wall or boundary web, boundary flange, etc. and extend transversely to the plane of the Raise reflector 1, preferably perpendicular to the plane of the reflector plate. The height in relation to the plane 1 'of the reflector 1 can in this case correspond to the desired characteristic radiation properties of a structure constructed in this way. Change the antenna and differ in wide areas.

The reflector modules 3 are, for example, in a Netall die-casting process, in an injection molding process, for example in the form of plastic injection molding processes, in which the plastic is then coated at least on one side, preferably all around, with a conductive metallized surface. In principle, however, reflector parts could also be used, possibly in a deep-drawing process or an embossing process, which are produced in a so-called tixo casting process or, for example, also by means of a milling process. In some cases the following is also referred to as a primary molding process, even if this term does not mean all of the production processes mentioned above.

In the exemplary embodiment shown, each of the reflector modules also has four transverse webs 9 which are arranged at a distance from one another in the vertical spacing of the installed reflector and which are likewise produced in an aforementioned primary molding process. In the exemplary embodiment shown, five reflector environments are thereby generated for each reflector module 3, each of which is formed by a section of the two outer side boundary walls and by two spaced central or transverse webs 9 or a transverse web 9 and one of the two end boundary walls 7.

In each such radiator environment 11, a number of bores through openings 13 are also incorporated in the plane 1 ′ of the reflector 1, on which the desired single-polarized or, for example, dual-polarized ones are then made Radiator modules can be firmly anchored and installed on the reflector 1. The radiator modules themselves, in particular dipole radiator structures or patch radiator structures, can have a wide variety of designs. For this purpose, reference is made to previously known emitters and emitter types, as are well known to the person skilled in the art. In this respect, reference is made only by way of example to the radiator structures known from the prior publications DE 198 23 749 A1 or WO 00/39894, which are all suitable for the present case. Likewise, the reflector module can also be used for antennas and antenna arrays which radiate not only in one frequency band but in two or more frequency bands, for example by installing radiator arrangements in the individual radiator environments which are suitable for different frequency bands. In this respect, too, reference is made to previously known basic solutions. In other words, the emitters to be set up in the emitter surroundings can consist, for example, of dipole emitters, that is to say of simple dipole emitters that only work in one polarization or in two polarizations, for example consisting of cross-shaped dipole emitters or dipole emitters in the manner of a dipole square, so-called cross-shaped emitters Vector dipoles, as are known for example from WO 00/39894 or from radiator arrangements which can radiate and receive in one or two mutually perpendicular polarizations not in one but, for example, also in two or three frequency bands and more. The same applies to the use of patch spots. In this respect, the arrangement of the reflector modules on certain types of spotlights is not restricted.

In the exemplary embodiment shown, the reflector 1 is switched off two identical radiator modules 3 are assembled, specifically at their front or transverse side boundary 7. There, namely, there is a offset from the central longitudinal plane to the outer edge, preferably extending over a partial height transversely to the reflector plane 1 ', on the one hand a threaded bore projection 15 projecting in the direction of attachment , whose axial axis is aligned transversely to the plane of the reflector plate. On the other side to a vertical central longitudinal plane, an inwardly protruding threaded bore projection 17 is then formed, such that when the radiator modules 3 are offset by 180 ° to one another, as shown in FIGS. 2 to 4, these two radiator modules 3 now meet one another on their end-face side boundary surface 7 can be moved so that the respective threaded bore extension 15 of the respective radiator module 3 protrudes into a corresponding recess 17 'on the other end of the adjacent radiator module 3, which adjoins the threaded bore extension 17 projecting inwards in the axial direction. In this case, the threaded bore 15 'introduced in the respective projecting end 15 protrudes in a plan view directly in axial extension below the threaded bore 17' in the inwardly projecting projection 17 of the second reflector module 3, so that they are arranged one above the other in pairs Threaded holes 15 ', 17' a screw 18 can be screwed. The corresponding attachment lugs 15 and 17 are therefore provided on each end wall 7 on each of the two reflector modules 3 at different heights, which enables assembly in a 180 ° relative position to one another in accordance with FIGS. 3a and 3b. The overall dimensions and designs are such that in this position the two the front transverse boundary walls 7 of the two reflector modules come to rest against each other under fixed contact.

In addition, since the threaded bore lugs 15 and 17 are offset outwards from the vertical central longitudinal plane and are each formed at different heights on each reflector module 3 (based on the plane 1 'of the reflector 1), there is an optimal two-point support which is high Forces, even wind and vibration forces can absorb.

If required, an intermediate material serving as a damper can also be inserted in a sandwich-like manner between the two end faces 7 of two adjacent and assembled reflector modules 3 before joining the two end boundary walls 7 of the two reflector modules. As a result, permissible vibrations of the two reflector modules relative to one another can also be permitted to a small extent, which can have advantages in particular when the antenna is exposed to very large forces during strong storms and vibrations.

It can also be seen from FIGS. 3a, 3b and 4 that additional connecting lugs 21 connecting the two reflector modules 3 can be used, of which one screw 23 on one reflector module 3 and the second screw 24 on the other reflector module 3 can be screwed in from the bottom side. The one or more connecting lugs protrude beyond the cut surface separating the two reflector modules 3. Reference is made below to FIG. 5, in which two radiation environments 11 of a reflector module are shown in sections.

There, non-conductive holding or fastening devices 27 are placed on the existing crosspieces 9, which are formed in the course of the original shaping process, and are provided with slot-shaped recesses, in order here, for example, further beam-shaping and / or decoupling electrically conductive functional parts can be used, and can be used capacitively. This is because the holding and fastening devices 27 are electrically non-conductive and are preferably made of plastic or another suitable dielectric. The capacitive fastening of the functional parts 29 mentioned also prevents unwanted intermodulation products. In addition, the additional fastening and insertion in the radiation surroundings 11 by means of the holding and fastening device 27 mentioned is comparatively simple and highly variable.

In addition - as can also be seen from the drawings, for example FIG. 5 - further anchoring sections 28 are provided on the cross struts 9 which are provided from the house and are provided with bores 31 oriented transversely to the plane 1 'of the reflector, at which, for example, additional anchoring sections serve for beam shaping and / or components used for the decoupling can be attached, for example pin-shaped or rod-shaped functional parts which extend perpendicularly with respect to plane 1 'of the reflector, etc. The bores 31 thus extend perpendicularly to plane 1' of the reflector, the holding and fastening devices 28 as reinforcing sections in the cross struts 9, but also, if required, as is shown in the illustration according to FIGS. 3a and 3b, are formed on the transverse side boundaries 7.

In the following, reference is made to FIGS. 6 and 7.

With reference to FIGS. 6 and 7, it is shown below that further functional parts 29 are integrated on the reflector as part of the aforementioned manufacturing process of the reflector modules, preferably on the underside thereof (but also on the top side receiving the emitters if necessary).

6 and 7, outer conductor sections of a connection and feed structure for two vertically adjacent radiators are shown on the underside. The outer conductor contour projecting downward from the level 1 'of the reflector 1 in the form of a circumferential housing web 35 serves as the outer conductor. Inner conductors 43 can then be anchored therein, for example, by means of holding devices 37 which can be inserted between these housing webs 35 and are preferably non-conductive and made of plastic. Coaxial cables 41, for example, can then be connected via likewise provided feed-in points 39, for example by electrically / galvanically contacting the outer conductor of the coaxial cable with the circumferential housing web 35, which performs the outer conductor function, whereas the inner conductor of the coaxial cable is electrically separated from it at a suitable point the inner conductor 43 provided in the interior of the distributor thus formed is electrically-galvanically connected. The inner conductor is then guided so far in this connection structure and is directed to the other reflector level via one of the holes provided in the reflector plate. leads to establish an electrically conductive connection to the radiator elements provided there.

However, other functional parts can also be provided in the reflector according to the invention, ie not only outer conductor structures and outer conductor contours for lines of high-frequency signals, for example in the form of chamber lines, coaxial lines or strip lines, but also for example contours for electromagnetic shielding, housing parts for HF -Components such as filters, switches, distributors, phase shifters or, for example, in the form of interfaces for brackets, fastenings, additional devices, etc.

On the basis of the exemplary embodiments explained, it has been described how two identically designed radiator modules can be permanently mounted together on one end wall 7. The opposite end faces are designed differently here, so that assembly according to the exemplary embodiment according to FIGS. 3 to 4 can only take place on one end face 7. For this purpose, the identically shaped reflector modules 3 are oriented rotated by 180 ° relative to one another in order to be assembled together. However, differently designed radiator modules can also be assembled in the vertical direction if they are each appropriately designed on an end wall, in order to be able to be firmly fixed to one another there by means of a suitable holding and fastening device 27. Finally, however, more than two reflector modules, for example three or four etc., can be assembled laterally in the vertical direction or also in the horizontal direction to form an entire antenna array. When assembling several reflector modules vertically then it is only necessary that at least the reflector modules arranged in the middle area are designed both on the upper and on the lower end wall area 7 in such a way that they can be assembled with an adjacent, next reflector module.

What is special about the functional parts mentioned is that part of an additional functional part, for example the external boundary, which serves as an outer conductor, is already part of the reflector arrangement for a connecting device or for a phase shifter, so that these components only have further functional components or other components must be completed to achieve a complete assembly.

In the following, reference is made to FIG. 8. There is another example of another functional part shown. Connected in one piece to the reflector material, an outer boundary, that is to say a circumferential housing web 35, is shown here. The reflector itself forms the floor, the housing web 35 forming the outer boundary. This functional part 29 can serve, for example, as a phase shifter arrangement provided on the rear of the reflector. The phase shifters can be constructed as they are known in principle from the prior publication WO 01/13459 AI. In this regard, reference is made to this prior publication and made the content of the present application. In the corresponding design according to FIG. 8, one or more concentrically arranged part-circular stiffener line sections can thus be accommodated, which interact with a pointer-like adjustment element, via which the path length to the two connected radiators or radiator groups and thus the phase position for the radiator elements can be adjusted and adjusted, for example in order to be able to set a different downtilt angle. Any other different types of functional parts with other functions and tasks can also be at least partially designed at home on the reflector, preferably on the rear. After the further elements to be installed for the functional part, which are not shown in the drawings, have been appropriately installed, the installation space which is formed by the reflector base and the circumferential housing web 35 can be closed by fastening and attaching a cover arrangement which, depending on the intended use, is electrically is trically conductive, preferably consists of a metal part, or else can also be formed from a plastic or dielectric part and the like.

Claims

Expectations:

1. Reflector for an antenna, in particular for a mobile radio antenna, with two longitudinal side boundaries (5) provided on the long sides of the reflector, characterized by the following features

- The reflector is produced in a casting process, in a deep-drawing or embossing process, or in a milling process, preferably with its two longitudinal side boundaries (5) and preferably with at least one front-side transverse side boundary (7), and

- At least one additional integrated functional part (29) is provided on the reflector, which is also produced in a casting, in a deep-drawing or embossing or in a milling process.

2. Reflector according to claim 1, characterized in that the at least one integrated functional part (29) consists of an outer and / or housing contour, preferably for lines of RF signals, chamber lines, coaxial lines or strip lines.

3. Reflector according to claim 1 or 2, characterized in that the at least one additional functional part (29) consists of a contour for electromagnetic shielding or housing parts for HF components as well as filters, switches, distributors or phase shifters.

4. Reflector according to one of claims 1 to 3, characterized in that the at least one functional part (29) is arranged on the rear side of the reflector.

5. Reflector according to one of claims 1 to 3, characterized in that the at least one additionally integrated functional part (29) is provided on the front side of the reflector also receiving the radiators.

6. Reflector according to one of claims 1 to 5, characterized in that a plurality of functional parts (29) are provided, which are provided on the front and / or the back of the reflector.

7. Reflector according to one of claims 1 to 6, characterized in that the reflector consists of at least two mutually fixable or assembled reflector modules (3), and that the at least one functional part (29) is formed on at least one of the reflector modules (3).

8. Reflector according to one of claims 1 to 7, characterized in that the reflector or the at least two reflector modules forming the reflector (3) consists of a die-cast part, in particular a metal casting, preferably an aluminum casting and / or a metal part produced in the tixo casting process.

9. Reflector according to one of claims 1 to 7, characterized characterized in that the reflector or the at least two reflector modules (3) forming the reflector consists of an injection molded part, preferably a plastic injection molded part with a metallized surface.

10. The reflector according to claim 8 or 9, characterized in that the reflector comprises at least two identical reflector modules (3).

11. A reflector according to claim 8 or 9, characterized in that the reflector comprises at least two different reflector modules (3).

12. Reflector according to one of claims 8 to 11, characterized in that at least one reflector module (3) on its first or on its opposite second front transverse boundary (7) with an adjacent reflector module (3) can be assembled or fixed together.

13. Reflector according to one of claims 8 to 12, characterized in that the at least two reflector modules

(3) of a reflector on its front transverse side boundaries (7) are designed such that they can only be fixed to one another or mounted on one another in one direction of installation.

14. A reflector according to one of claims 8 to 13, characterized in that the at least two reflector modules (3) are galvanically-electrically connected to one another, preferably at their two front transverse side boundaries (7), on which they are mounted to one another.

15. Reflector according to one of claims 8 to 13, characterized in that the at least two reflector modules

(3) of a reflector are fixed to one another in such a way that the two mutually adjacent transverse lateral side boundaries (7) of two adjacent reflector modules (3) are electrically galvanically connected to one another.

16. The reflector as claimed in claim 15, characterized in that an insulating intermediate layer or device, preferably a plastic layer and / or a dielectric, is interposed between the two front transverse side boundaries (7), on which two adjacent reflector modules (3) are fixed to one another is.

17. A reflector according to any one of claims 8 to 16, characterized in that at least two reflector modules (3) of a reflector comprise transverse side boundaries (7) between their two end faces, a damping material or a damping layer.

18. A reflector according to any one of claims 8 to 17, characterized in that the at least two reflector modules (3) of a reflector in the region of their end faces include transverse side boundaries (7) for producing a mutual fixation and stabilization fastening points and / or fastening approaches (15) which are provided or formed on different levels parallel to the reflector level.

19. A reflector according to any one of claims 8 to 18, characterized in that on at least one front lateral boundary (7) one of one through the reflective door module (3) running central longitudinal plane protrudes outwards towards the longitudinal side boundary (5), in the direction of attachment, and that on the other side is closer to the central longitudinal plane and thus the opposite longitudinal side boundary (5) is an inward facing fastening shoulder (17 ) is provided, the outwardly projecting and the inwardly extending attachment lug (15, 17) being arranged on two different height levels, such that when two reflector modules (3) are joined together, the attachment lugs (15, 17) formed in each case by 180 ° are twisted with respect to one another and can be connected to one another via fastening means extending transversely to the plane (1 ') of the reflector, preferably in the form of screws (23).

20. Reflector according to one of claims 1 to 19, characterized in that on the cross struts (9) non-conductive and / or dielectric holding fastening devices (27) can be anchored, preferably fitted, clipped, etc., on which electrically contactless with the Functional parts (29) serving as reflectors for beam shaping and / or decoupling can be used.

21. A reflector according to claim 20, characterized in that the functional parts (29) consist of metallized strips or metal strips, metallized pins or metal pins.

22. Reflector according to one of claims 1 to 21, characterized in that in at least one cross strut (9) and / or at least one transverse side boundary (7) and / or a longitudinal side boundary (5) at least one preferred as a reinforcing section designed holding and / or fastening device (28) is provided, in which a preferably transverse to the plane (l ¹ ) of the reflector module (3) bore is formed for fastening further functional parts.