Multi-frequency antenna device, base station antenna and test reflector

Abstract

The present disclosure provides a multi-frequency antenna device, which comprises a phase-shifting arm module, a reflecting plate, a passive antenna module and an active antenna module; the phase-shifting arm module is installed at the side edge of the reflecting plate, and a phase shifter module is integrated in the phase-shifting arm module; the passive antenna module is installed on the phase-shifting arm module, and passive radiation units in the passive antenna module are electrically connected with the phase shifter module; active radiation units in the active antenna module are arranged on the reflecting plate. The present disclosure also provides a base station antenna and a test reflecting plate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication technology, in particular to a multi-frequency antenna device, a base station antenna and a test reflector plate. BACKGROUND

[0002] With the development of 5G antenna technology, the deployment of 5G base stations is imminent. At present, in order to quickly deploy 5G base stations, the scheme of adding 5G antennas and equipment to the original 4G base station is mainly adopted. Since the active (A) antenna and the passive (P) antenna integrated (A+P) antenna has the fusion characteristics of 4G and 5G, it is widely used in the deployment of 5G base stations, which will become an inevitable trend of future 5G antennas.

[0003] The existing active and passive integrated (A+P) antenna usually adopts a front and rear stacked integration scheme, the passive (P) antenna is in front and the active (A) antenna is in back, which is a split type arrangement. This integration scheme inevitably has the following problems in actual application: first, the functional components of the passive antenna in front of the active antenna will have a certain impact on the electromagnetic waves radiated by the active antenna, ultimately affecting the performance of the active antenna; second, the functional components inside the passive antenna can only be arranged at a position that does not affect the radiation of the active antenna, which greatly limits the space of the passive antenna, making its size and weight larger; third, when multiple active antennas and passive antennas are integrated, most of the space of the passive antenna will affect the active antenna, causing the functional components inside the passive antenna to be unable to be arranged. SUMMARY

[0004] In order to at least solve one of the above technical problems, the present disclosure provides a multi-frequency antenna device, a base station antenna and a test reflector plate.

[0005] In a first aspect, the embodiments of the present disclosure provide a multi-frequency antenna device, which comprises a phase-shifting arm module, a reflector plate, a passive antenna module and an active antenna module; the phase-shifting arm module is installed at the side edge of the reflector plate, and a phase shifter module is integrated in the phase-shifting arm module; the passive antenna module is installed on the phase-shifting arm module, and a passive radiation unit in the passive antenna module is electrically connected with the phase shifter module; an active radiation unit in the active antenna module is arranged on the reflector plate.

[0006] In a second aspect, the embodiments of the present disclosure provide a base station antenna, which adopts the above multi-frequency antenna device provided by the embodiments of the present disclosure.

[0007] In a third aspect, the embodiments of the present disclosure provide a test reflection plate, wherein the test reflection plate is used for testing a passive antenna module; one end of the test reflection plate is provided with a test interface for electrical connection with a test device; the passive antenna module is installed on a phase shift arm module, the phase shift arm module is installed at a side edge of the test reflection plate during testing, and a phase shifter module is integrated in the phase shift arm module; and passive radiation units in the passive antenna module are electrically connected with the phase shifter module.

[0008] The technical solutions of the multi-frequency antenna device, the base station antenna and the test reflection plate in the embodiments of the present disclosure have the following advantages: the passive antenna module and the active antenna module share one reflection plate, which not only saves the lower space of the passive antenna module and solves the problem that internal functional components of the passive antenna cannot be arranged, but also effectively reduces the mutual coupling between the 4G system and the 5G system and ensures the performance of the active antenna. On this basis, by using the phase shift arm module as the installation basis of the passive antenna module, the passive antenna module can be installed at the side edge of the reflection plate. Compared with directly installing the passive antenna module at the side edge of the reflection plate, by installing the passive antenna module on the phase shift arm module, the passive antenna module (usually multiple) and the phase shift arm module can be combined into an integrated module, thereby realizing the modularization of the passive antenna module as a whole. Moreover, by installing the phase shift arm module at the side edge of the reflection plate, it is easier to realize the generalization of the connection, for example, the phase shift arm module and the reflection plate are connected by using a general interface, so that the passive antenna module can be combined with active antenna modules of different sizes by using a general connection mode, thereby increasing the generalization of the product and meeting different customer needs. In addition, the above-mentioned integrated module has all the feeding structures of the passive antenna module, so that the passive antenna module can be separately produced and debugged by using the test reflection plate, and no longer needs to be combined with the active antenna module for testing, thereby greatly simplifying the production process. BRIEF DESCRIPTION OF DRAWINGS

[0009] In the drawings of the embodiments of the present disclosure:

[0010] Figure 1 A structural exploded view of a multi-frequency antenna device provided by the embodiments of the present disclosure is shown in the drawings.

[0011] Figure 2 A distribution diagram of active radiation units and passive radiation units in the side direction of a multi-frequency antenna device provided by the embodiments of the present disclosure is shown in the drawings.

[0012] Figure 3 A structural diagram of a phase shift arm module used by the embodiments of the present disclosure is shown in the drawings.

[0013] Figure 4 A local structural diagram of a phase shift arm module and a passive antenna module at an end arm used by the embodiments of the present disclosure is shown in the drawings.

[0014] Figure 5 Local structure diagram of the phase shift arm module and the passive antenna module employed by the embodiment of the present disclosure at the driver;

[0015] Figure 6 Structure exploded view of the phase shift arm module and the passive antenna module employed by the embodiment of the present disclosure;

[0016] Figure 7 Structure exploded view of another multi-frequency antenna device provided by the embodiment of the present disclosure;

[0017] Figure 8 Structure diagram of the passive antenna module employed by the embodiment of the present disclosure;

[0018] Figure 9 Cross-sectional view of a multi-frequency antenna device provided by the embodiment of the present disclosure in the direction perpendicular to the extension direction of the first phase shift arm;

[0019] Figure 10 Structure diagram of the first phase shift arm employed by the embodiment of the present disclosure;

[0020] Figure 11 Structure diagram of the test reflecting plate, the phase shift arm module and the passive antenna module assembled together employed by the embodiment of the present disclosure. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the technical solutions of the present disclosure, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0022] The embodiments shown will be described in more detail in the following, but the embodiments shown can be embodied in various forms, and the present disclosure should not be interpreted as being limited to the embodiments set forth below. On the contrary, the purpose of providing these embodiments is to make the present disclosure thorough and complete, and to enable those skilled in the art to fully understand the scope of the present disclosure.

[0023] The accompanying drawings of the embodiments of the present disclosure are used to provide further understanding of the embodiments of the present disclosure, and constitute a part of the specification, which is used together with the detailed embodiments to explain the present disclosure, and do not constitute a limitation of the present disclosure. The above and other features and advantages will become more apparent to those skilled in the art by describing the detailed embodiments with reference to the accompanying drawings.

[0024] The present disclosure can be described with reference to plan views and / or cross-sectional views by means of ideal schematic drawings of the present disclosure. Therefore, the example illustrations can be modified according to manufacturing techniques and / or tolerances.

[0025] The embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0026] The terminology used by the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the present disclosure, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used in the present disclosure, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term "includes" and / or "made of" as used herein specifies the presence of stated features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0027] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an overly literal or overly formal sense unless expressly so defined herein.

[0028] The present disclosure is not limited to the embodiments shown in the drawings, but includes modifications of the configuration formed based on the manufacturing process. Therefore, the regions exemplified in the drawings have a schematic property, and the shape of the regions shown in the drawings exemplifies a specific shape of the region of the element, but is not intended to be restrictive.

[0029] In some related technologies, an active-passive integrated (A+P) antenna usually adopts a front-back stacked integration scheme, the passive (P) antenna is in front and the active (A) antenna is in back, arranged in a split type, and the radiation surface of the passive antenna overlaps the radiation surface of the active antenna, the overlapping part of the passive structure is called the co-boresight of the passive antenna, and the non-overlapping part is called the non-co-boresight of the passive antenna. However, the overlapping part of the passive not only affects the radiation of the active, but also in order to avoid shielding the active antenna, most of the functional components inside the passive are placed in the non-co-boresight, thereby causing the layout space of the passive antenna to be greatly limited, resulting in complex layout, increased weight and cost. In addition, in the case of multiple active antennas, the co-boresight will be very large, causing the non-co-boresight to have no space to accommodate the functional components of the passive, thereby causing the internal functional components of the passive antenna to be unable to be laid out. In addition, in the related technology, different frequency band radiation units are arranged alternately, resulting in complex radiation surface layout and design interference, which requires a large change to the passive, resulting in increased design difficulty and complexity. In addition, in the related technology, the passive and the active need to be combined for testing, which is not convenient for problem positioning and is not conducive to mass production. Moreover, in the related technology, the co-boresight part of the passive antenna is designed for a specific frequency and can only select a specific frequency, and different active antennas have different sizes, which often causes interference problems when combined, which makes the same passive antenna often cannot be assembled with active antennas of different frequency bands, thereby increasing the design difficulty and failing to achieve product universality.

[0030] To solve at least one of the above technical problems, in a first aspect, the embodiments of the present disclosure provide a multi-frequency antenna device, which can be applied to a base station antenna, specifically a 5G base station antenna or a 4G / 5G hybrid antenna.

[0031] Please refer to Figures 1 to 6 The multi-frequency antenna device 100 includes a phase shift arm module 1, a reflector plate 2, a passive antenna module 3, and an active antenna module 4. The phase shift arm module 1 is installed at the side edge 21 of the reflector plate 2, and the phase shifter module is integrated in the phase shift arm module 1. The passive antenna module 3 is installed on the phase shift arm module 1, and the passive radiation unit 31 in the passive antenna module 3 is electrically connected with the phase shifter module. The active radiation unit 41 in the active antenna module 4 is arranged on the reflector plate 2.

[0032] The multi-frequency antenna device 100 in the embodiments of the present disclosure has a passive antenna module 3 and an active antenna module 4 sharing a reflector plate 2, which not only saves the lower space of the passive antenna module 3, solves the problem that the internal functional components of the passive antenna module 3 cannot be arranged, but also effectively reduces the mutual coupling between the 4G system and the 5G system, and ensures the performance of the active antenna. On this basis, by using the phase shift arm module 1 as the installation basis of the passive antenna module 3, the passive antenna module 3 can be installed at the side edge 21 of the reflector plate 2. Compared with directly installing the passive antenna module 3 at the side edge 21 of the reflector plate 2, by installing the passive antenna module 3 on the phase shift arm module 1, the passive antenna module 3 (usually multiple) and the phase shift arm module 1 can be combined into an integrated module, thereby realizing the modularization of the passive antenna module 3 as a whole, and the connection generalization is easier to realize by installing the phase shift arm module 1 at the side edge 21 of the reflector plate 2, for example, the phase shift arm module 1 and the reflector plate 2 are connected by a general interface, so that the passive antenna module 3 and the active antenna module 4 of different sizes can be combined by a general connection mode, thereby increasing the product generalization and meeting different customer needs. In addition, the above-mentioned integrated module has all the feeding structures of the passive antenna module 3, so that the passive antenna module 3 can be produced and debugged separately by using a test reflector plate, and there is no need to test it in combination with the passive antenna module 3, thereby greatly simplifying the production process.

[0033] Specifically, the phase shifter module is used to adjust the phase of the passive radiation unit 31, which is integrated in the phase shift arm module 1, and the passive antenna module 3 is installed on the phase shift arm module 1, so that the passive radiation unit 31 in the passive antenna module 3 and the phase shifter module are more conveniently electrically connected. Therefore, the phase shift arm module 1 integrated with the phase shifter module can have the functions of phase shifting and serving as the installation basis of the passive antenna module 3, which is a multi-purpose device, thereby eliminating the need for additional components, simplifying the device structure, and reducing weight and cost.

[0034] As Figure 5 and Figure 6As shown, the phase shifter module for realizing the above function includes a phase shifter circuit (not shown in the figure), a phase shifting interface 111 and a driver 6. Among them, the first phase shifting arm 11 and the second phase shifting arm 12 are integrated with the phase shifter circuit, and the passive radiation unit 31 in the passive antenna module 3 is electrically connected with the phase shifter circuit; the phase shifter circuit is provided with a medium plate and a phase shifting circuit board with variable relative positions. The phase shifting interface 111 is arranged, for example, on the first phase shifting arm 11 and the second phase shifting arm 12, and the driver 6 is installed on the first phase shifting arm 11 and the second phase shifting arm 12, for example, through a support 63, and is mechanically connected with the phase shifting interface 111 on the first phase shifting arm 11 and the second phase shifting arm 12. When the driver 6 receives a control signal, the motor inside it rotates, and the motor drives the driving rod 61 to rotate, so as to transmit power to the phase shifting interface 111 through the driving rod 61, so as to change the relative positions of the medium plate and the phase shifting circuit board in the phase shifter circuit, and then realize the adjustment of the downtilt angle. The internal structure and the phase shifting function of the phase shifter circuit (including but not limited to the medium plate and the phase shifting circuit board) and the driver 6 all belong to the conventional technology in the field, and will not be described here.

[0035] The phase shifting arm module 1 for realizing this function can be various, and in some embodiments, as shown in FIG. 1, the phase shifting arm module 1 includes a first phase shifting arm 11 and a second phase shifting arm 12 arranged opposite to each other, and two end arms 13 connected between the first phase shifting arm 11 and the second phase shifting arm 12, the first phase shifting arm 11, the second phase shifting arm 12 and the two end arms 13 form a frame structure and are respectively installed at the four side edges 21 of the reflecting plate 2; the first phase shifting arm 11 and the second phase shifting arm 12 are each installed with at least one passive antenna module 3. Figures 3 to 6

[0036] ​In a specific embodiment, the reflecting plate 2 is a rectangular reflecting plate for example, two long sides of the rectangular reflecting plate are respectively provided with the first phase-shifting arm 11 and the second phase-shifting arm 12, a plurality of passive antenna modules 3 are mounted on the first phase-shifting arm 11 and the second phase-shifting arm 12, and the number of the passive antenna modules 3 mounted on the first phase-shifting arm 11 is the same as that of the passive antenna modules 3 mounted on the second phase-shifting arm 12, and the passive antenna modules 3 mounted on the first phase-shifting arm 11 and the passive antenna modules 3 mounted on the second phase-shifting arm 12 are arranged in pairs. The two end arms 13 are used to connect the first phase-shifting arm 11 and the second phase-shifting arm 12 together to form an integrated frame structure, and the end of each end arm 13 is fixedly connected to the end of the first phase-shifting arm 11 or the second phase-shifting arm 12, for example, through a right-angle arm 14. The first phase-shifting arm 11, the second phase-shifting arm 12, the two end arms 13 and the right-angle arm 14 are all plate-shaped for example, and are perpendicular to the plate surface of the reflecting plate 2. In actual applications, the shape of the reflecting plate 2 is not limited to a rectangle, and can be other shapes according to specific needs, the shape of the frame structure formed by the first phase-shifting arm 11, the second phase-shifting arm 12 and the two end arms 13 is adapted to the shape of the reflecting plate 2, and according to different shapes, the number of the first phase-shifting arm 11 and the second phase-shifting arm 12 can be multiple, and the two end arms 13 can be present or absent. The first phase-shifting arm 11 and the second phase-shifting arm 12 can extend in a straight line direction or in an arc direction.

[0037] In the process of assembling the passive antenna module 3 and the active antenna module 4, first, the passive antenna module 3 is mounted on the frame structure to form an integrated module, and then the integrated module is mounted on the side 21 of the reflecting plate 2, so as to realize the assembly of the passive antenna module 3 and the active antenna module 4. This assembly method is more conducive to the generalization of connection, for example, the frame structure and the reflecting plate 2 are connected through a general interface, so that the passive antenna module 3 and the active antenna module 4 of different sizes can be combined through a general connection mode, thereby increasing the product generalization and meeting different customer needs.

[0038] In order to realize the generalization of connection, in some embodiments, a plug-in structure (not shown in the figure) is arranged between the phase-shifting arm module 1 and the side 21 of the reflecting plate 2, which is used to plug the phase-shifting arm module 1 and the side 21 of the reflecting plate 2. In this way, the passive antenna module 3 and the active antenna module 4 of different sizes can be combined through a general connection mode, thereby increasing the product generalization and meeting different customer needs. The plug-in structure includes a male plug and a female plug for example, one of the male plug and the female plug is arranged on the phase-shifting arm module 1 (for example, the frame structure), and the other is arranged on the side 21 of the reflecting plate 2. Of course, in actual applications, other connection structures, such as a clamping structure, can also be arranged between the phase-shifting arm module 1 and the side 21 of the reflecting plate 2, which also realizes the generalization of connection.

[0039] In some embodiments, asFigure 1 and Figure 2 As shown in FIG. 1, the multi-frequency antenna device 100 further comprises a cover 5 connected to the side edge 21 of the reflector plate 2 and enclosing the reflector plate 2 to form an enclosed space in which the phase-shifting arm module 1, the passive antenna module 3 and the active radiation unit 41 are located. The cover 5 can protect the modules and units located therein. Specifically, the active radiation unit 41 in the active antenna module 4 is mounted on the plate surface of the reflector plate 2 and located in the enclosed space, and the remote radio unit 42 (RRU) in the active antenna module 4 is mounted on the side of the reflector plate 2 away from the active radiation unit 41 and located outside the enclosed space. Further, in some embodiments, the projection of the passive antenna module 3 on the reflector plate 2 falls within the reflector plate 2, so that the reflector plate 2 can provide a reflecting surface for the passive antenna module 3. Specifically, a plurality of passive antenna modules 3 are arranged along the extension direction of the first phase-shifting arm 11 and the second phase-shifting arm 12 in this case, in order to enable the reflector plate 2 to provide a reflecting surface for the plurality of passive antenna modules 3 on the first phase-shifting arm 11 and the second phase-shifting arm 12, the length of the reflector plate 2 is not less than the length of the first phase-shifting arm 11 and the second phase-shifting arm 12, and the width of the reflector plate 2 is not less than the length of the two end arms 13, so as to ensure that the projection of the passive antenna module 3 on the reflector plate 2 falls within the reflector plate 2.

[0040] In some embodiments, the active antenna module 4 comprises at least one queue of a plurality of active radiation units 41 and at least one remote radio unit 42; the queue is, for example, a rectangular or square queue. Each remote radio unit 42 is arranged on the side of the reflector plate 3 away from the active radiation unit 41, and each remote radio unit 42 corresponds to each queue. In one example, as shown in FIG. 2, there are two queues of a plurality of active radiation units 41, and there are two remote radio units 42, and the two queues are arranged in sequence along the extension direction of the first phase-shifting arm 11 and the second phase-shifting arm 12. In another example, as shown in FIG. 3, there is a single queue of a plurality of active radiation units 41, and there is a single remote radio unit 42, which can be distributed at the middle position on the reflector plate 2. Figure 1 Figure 7 It should be noted that, in order to enable the reflector plate 2 to provide a reflecting surface for the plurality of passive antenna modules 3 on the first phase-shifting arm 11 and the second phase-shifting arm 12, the length and width of the reflector plate 2 need to be adapted to the length of the first phase-shifting arm 11 and the second phase-shifting arm 12 and the length of the two end arms 13 (or the size of the region in which the passive antenna modules 3 are arranged), and on this basis, the width of the queue of a plurality of active radiation units 41 is, for example, substantially equivalent to the width of the reflector plate 2; if the length of the single queue of a plurality of active radiation units 41 is less than the length of the reflector plate 2, there is a blank area on the reflector plate 2 in which a plurality of active radiation units 41 are not arranged. Figure 7 ​As shown, the blank area is located, for example, on both sides of the queue; similarly, if the sum of the lengths of the two queues where multiple active radiating elements 41 are arranged is less than the length of the reflector 2, then there will also be blank areas on the reflector 2 where multiple active radiating elements 41 are not arranged, such as... Figure 1 As shown, the blank area is located, for example, between two queues. However, this embodiment is not limited to this. In practical applications, the queues of multiple active radiating elements 41 can be located at any position on the reflector 2; in other words, the blank area can be located at any position on the reflector 2. Alternatively, the multiple active radiating elements 41 can be arranged to fill the reflector 2, in which case there is no blank area.

[0041] The passive antenna module 3 that can be installed on the phase shifter module 1 can have various structures. In some embodiments, such as Figure 8 and Figure 9 As shown, the passive antenna module 3 includes a passive radiating element 31, a bracket 32, and a signal adapter 33. The bracket 32 ​​is mounted on either the first phase-shifting arm 11 or the second phase-shifting arm 12; the passive radiating element 31 is mounted on the bracket 32; the bracket 32 ​​has a mounting groove 324, with one end extending to the location of the passive radiating element 31 and the other end extending to the location of the first phase-shifting arm 11 or the second phase-shifting arm 12; the signal adapter 33 is disposed in the mounting groove 324 and is electrically connected to the passive radiating element 31 through the first end of the mounting groove 324, and electrically connected to the phase shifter circuit integrated in the first phase-shifting arm 11 or the second phase-shifting arm 12 through the second end of the mounting groove 324.

[0042] Specifically, the bracket 32 ​​serves as the mounting base for the passive radiating unit 31, and the bracket 32 ​​is fixedly connected to the first phase-shifting arm 11 or the second phase-shifting arm 12, for example, by welding, riveting, threaded connection, etc. In some embodiments, for ease of installation, a limiting structure is provided between the bracket 32 ​​and the first phase-shifting arm 11 or the second phase-shifting arm 12 to limit the position of the bracket 32. Figure 8 and Figure 10 As shown, the limiting structure includes, for example, a limiting protrusion 323 and a limiting groove 112. The limiting protrusion 323 is disposed on the bracket 32, and the limiting groove 112 is disposed on the first phase-shifting arm 11 or the second phase-shifting arm 12. The limiting protrusion 323 and the limiting groove 112 cooperate, and the cooperation method is as follows: Figure 5 As shown, the position of the bracket 32 ​​is limited in the extending direction of the first phase-shifting arm 11 or the second phase-shifting arm 12. Of course, in practical applications, the limiting groove 112 can also be provided on the bracket 32, and the limiting protrusion 323 can be provided on the first phase-shifting arm 11 or the second phase-shifting arm 12. Furthermore, the number of limiting protrusions 323 and limiting grooves 112 can be one or more, and they correspond one-to-one.

[0043] The support 32 that achieves the above functions can have various structures. In some embodiments, such as Figure 8 As shown, the bracket 32 ​​includes a support plate 321. One end of the support plate 321 is mounted on the first phase-shifting arm 11 or the second phase-shifting arm 12, and the other end is provided with a bent portion 322 that bends relative to the support plate 321 toward the interior of the frame structure (i.e., the side of the first phase-shifting arm 11 and the second phase-shifting arm 12 opposite to each other). The passive radiating unit 31 is mounted on the bent portion 322. The aforementioned mounting groove 324 extends through the support plate 321 and the bent portion 322, thereby enabling the first end of the mounting groove 324 to extend to the bent portion 322 to achieve electrical connection between the signal adapter 33 and the passive radiating unit 31, and the second end of the mounting groove 324 to extend to the support plate 321 to achieve electrical connection between the signal adapter 33 and the phase shifter circuit integrated in the first phase-shifting arm 11 or the second phase-shifting arm 12. Further, as Figure 10 As shown, a soldering position 113 is provided on the first phase shifting arm 11 or the second phase shifting arm 12, and at the position corresponding to the support plate 321. By soldering the signal adapter 33 to the soldering position 113, the signal adapter 33 can be electrically connected to the phase shifter circuit in the first phase shifting arm 11 or the second phase shifting arm 12.

[0044] In some embodiments, the multi-frequency antenna device 100 further includes at least one frame 8 connected between the first phase-shifting arm 11 and the second phase-shifting arm 12. By using the frame 8 spanning between the first phase-shifting arm 11 and the second phase-shifting arm 12, the strength of the frame structure formed by the first phase-shifting arm 11, the second phase-shifting arm 12, and the two end arms 13 can be improved, thereby enhancing installation stability and reliability. Further, in embodiments with an outer casing 5, such as... Figure 9 As shown, the cross-sectional profile of the frame 8 in the direction parallel to the short side 21 of the reflector 2 is similar to the cross-sectional profile of the outer cover 5 in the direction parallel to the short side 21 of the reflector 2, but they are kept at a certain distance. In this way, when the outer cover 5 is deformed by external force, the support of the frame 8 can prevent damage to the internal components of the outer cover 5 due to the dent of the outer cover 5.

[0045] Secondly, this disclosure provides a base station antenna that employs the multi-frequency antenna device 100 described above. This base station antenna can be a 5G base station antenna or a 4G / 5G converged antenna.

[0046] Thirdly, such as Figure 11As shown, the embodiments of the present disclosure further provide a test reflector plate 9 for testing the passive antenna module 3. Wherein the passive antenna module 3 is installed in the phase shift arm module 1, the phase shift arm module 1 is installed at the side of the test reflector plate 9 during testing, and one end of the test reflector plate 9 is provided with a test interface 91 for electrical connection with a test device.

[0047] Since the passive antenna module 3 and the phase shift arm module 1 are combined into an integrated module, the overall modularization of the passive antenna module 3 is realized, and the integrated module has all the feeding structures of the passive antenna module 3. On this basis, the test reflector plate 9 can be used to test and debug the passive antenna module 3 alone, and there is no need to test it in combination with the active antenna module 4, thereby greatly simplifying the production process. The test device is used, for example, to test the electrical performance of the passive antenna module 3 through the test reflector plate 9.

[0048] In some embodiments, the structure and size (excluding the test interface 91) of the test reflector plate 9 are the same as those of the reflector plate 2 in the above-mentioned embodiments. In this way, on the one hand, connection generalization can be realized, that is, the interfaces of the test reflector plate 9 and the reflector plate 2 in the above-mentioned embodiments for connecting with the phase shift arm module 1 are the same, and both can be connected with the phase shift arm module 1. On the other hand, during testing, the test reflector plate 9 can replace the reflector plate 2 to provide a reflecting surface for the passive antenna module 3, that is, the test reflector plate 9 and the reflector plate 2 in the above-mentioned embodiments have the same reflecting function.

[0049] In summary, the technical solutions of the multi-frequency antenna device 100, the base station antenna and the test reflector plate 9 in the embodiments of the present disclosure, the passive antenna module 3 and the active antenna module 4 share one reflector plate 2, so that not only the lower space of the passive antenna module 3 can be saved, the problem that the internal functional components of the passive antenna cannot be arranged is solved, but also the mutual coupling between the 4G system and the 5G system can be effectively reduced, and the performance of the active antenna is ensured. On this basis, by using the phase shift arm module 1 as the installation basis of the passive antenna module 3, the passive antenna module 3 can be installed at the side edge 21 of the reflector plate 2. Compared with directly installing the passive antenna module 3 at the side edge 21 of the reflector plate 2, by installing the passive antenna module 3 on the phase shift arm module 1, the passive antenna module 3 (usually multiple) and the phase shift arm module 1 can be combined into an integrated module, thereby realizing the modularization of the passive antenna module 3 as a whole, and the connection generalization is easier to realize by installing the phase shift arm module 1 at the side edge 21 of the reflector plate 2, for example, the phase shift arm module 1 and the reflector plate 2 are connected by a general interface, so that the passive antenna module 3 and the active antenna module 4 of different sizes can be easily combined by a general connection mode, thereby increasing the product generalization and meeting different customer needs. In addition, the above-mentioned integrated module has all the feeding structures of the passive antenna module 3, so that the test reflector plate can be used for separate production debugging, and there is no need to test the combination with the passive antenna module 3, thereby greatly simplifying the production process.

[0050] The present disclosure has disclosed example embodiments, and although specific terms are employed, they are used in the broadest descriptive sense only and should not be construed to limit the disclosure. In some instances, it will be apparent to those skilled in the art that features, characteristics or / and elements described in connection with a particular embodiment can be used in conjunction with other embodiments unless otherwise explicitly stated. Accordingly, those skilled in the art will appreciate that various modifications can be made to the described embodiments without departing from the scope of the present disclosure, which is set forth in the appended claims.

Claims

1. A multi-frequency antenna device, wherein, Includes phase shifter module, reflector, passive antenna module and active antenna module; The phase-shifting arm module is installed on the side of the reflector, and the phase-shifting arm module is connected to the reflector via a universal interface. The phase-shifting arm module integrates a phase shifter module. The passive antenna module is installed on the phase-shifting arm module, and the passive antenna module and the phase-shifting arm module are combined into a single module. The passive radiating element in the passive antenna module is electrically connected to the phase shifter module. The active radiating element in the active antenna module is disposed on the reflector. The multi-frequency antenna device also includes an outer cover, which is connected to the side of the reflector and together with the reflector to form a closed space. The phase-shifting arm module, the passive antenna module and the active radiating unit are located in the closed space. The phase-shifting arm module includes a first phase-shifting arm and a second phase-shifting arm arranged opposite to each other. The first phase-shifting arm and the second phase-shifting arm are respectively installed on two sides of the reflector. At least one passive antenna module is installed on both the first phase-shifting arm and the second phase-shifting arm. The phase shifter module includes a phase shifter circuit, a phase shifter interface, and a driver; Both the first phase-shifting arm and the second phase-shifting arm integrate the phase shifter circuit, and the passive radiating unit in the passive antenna module is electrically connected to the phase shifter circuit; The driver is mounted on the first phase-shifting arm and the second phase-shifting arm, and is electrically connected to the phase shifter circuit and the phase-shifting interface; The driver is located between the first phase-shifting arm and the second phase-shifting arm, and is connected to the phase-shifting interface via a drive rod.

2. The multi-frequency antenna device according to claim 1, wherein, The phase-shifting arm module also includes two end arms connected between the first phase-shifting arm and the second phase-shifting arm. The first phase-shifting arm, the second phase-shifting arm, and the two end arms together form a frame structure and are respectively installed on the four sides of the reflector.

3. The multi-frequency antenna device according to claim 1, wherein, A plug-in structure is provided between the phase shifting arm module and the side of the reflector for plugging the phase shifting arm module into the side of the reflector.

4. The multi-frequency antenna device according to claim 2, wherein, The passive antenna module includes the passive radiating element, the bracket, and the signal adapter; The bracket is mounted on the first phase-shifting arm or the second phase-shifting arm; the passive radiation unit is mounted on the bracket; the bracket is provided with a mounting groove, the first end of the mounting groove extends to the location of the passive radiation unit, and the second end of the mounting groove extends to the location of the first phase-shifting arm or the second phase-shifting arm; the signal adapter is disposed in the mounting groove and is electrically connected to the passive radiation unit through the first end of the mounting groove, and is electrically connected to the phase shifter module through the second end of the mounting groove.

5. The multi-frequency antenna device according to claim 4, wherein, The bracket includes a support plate, one end of which is mounted on the first phase-shifting arm or the second phase-shifting arm, and the other end is provided with a bent portion that bends toward the inside of the frame structure relative to the support plate, and the passive radiation unit is mounted on the bent portion; The mounting groove extends through the support plate and the bend.

6. The multi-frequency antenna device according to claim 1, wherein, The projection of the passive antenna module onto the reflector falls onto the reflector.

7. The multi-frequency antenna device according to claim 1, wherein, The active antenna module includes at least one queue of multiple active radiating elements and at least one remote radio frequency unit. Each of the aforementioned remote radio frequency units is disposed on the side of the reflector away from the active radiation unit, and each of the aforementioned remote radio frequency units corresponds one-to-one with each of the aforementioned queues.

8. A base station antenna, wherein, Includes the multi-frequency antenna device as described in any one of claims 1-7.

9. A test reflector, wherein, Used for testing passive antenna modules; one end of the test reflector is provided with a test interface for electrical connection with the test equipment; The passive antenna module is mounted on the phase shift arm module, which is installed on the side of the test reflector during testing, and the phase shift arm module integrates a phase shifter module; the passive radiating element in the passive antenna module is electrically connected to the phase shifter module. The passive antenna module and the phase shifter module are combined into an integrated module; The phase-shifting arm module includes a first phase-shifting arm and a second phase-shifting arm arranged opposite to each other. The first phase-shifting arm and the second phase-shifting arm are respectively installed on two sides of the reflector. At least one passive antenna module is installed on both the first phase-shifting arm and the second phase-shifting arm. The phase shifter module includes a phase shifter circuit, a phase shifter interface, and a driver; Both the first phase-shifting arm and the second phase-shifting arm integrate the phase shifter circuit, and the passive radiating unit in the passive antenna module is electrically connected to the phase shifter circuit; The driver is mounted on the first phase-shifting arm and the second phase-shifting arm, and is electrically connected to the phase shifter circuit and the phase-shifting interface; The driver is located between the first phase-shifting arm and the second phase-shifting arm, and is connected to the phase-shifting interface via a drive rod.

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