Multi-antenna device

Abstract

The invention provides a multi-antenna device. The multi-antenna device comprises a plurality of different antenna units, a feed body with a feed interface and a radiator with a plurality of radiating surfaces, the feed interface can be matched with a plurality of different antenna units; the radiating body is movably mounted on the feed body, so that the radiating body can rotate relative to the feed body; the plurality of different antenna units are mutually independent, and each radiating surface is provided with a corresponding antenna unit; the radiating body can drive the plurality of different antenna units to rotate according to a preset condition so as to switch any different antenna unit to be communicated with the same feed interface. According to the multi-antenna device, the plurality of different antenna units are arranged on the plurality of radiating surfaces in a one-to-one correspondence manner, so that the plurality of different antenna units can be quickly switched along with the rotation of the radiating body; due to the design, the multi-antenna device has the advantages of being simple in structure, low in cost, convenient to maintain, wide in scene adaptability, high in switching reliability and high in anti-interference performance.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a split-type and rotating multi-antenna device. Background Technology

[0002] With the rapid development of wireless communication technology, the need for multi-band, multi-standard, and multi-scenario adaptability communication has become the core requirement for terminal antenna design.

[0003] In existing technologies, traditional multi-antenna devices mainly employ solutions such as array antenna combinations, multi-band shared radiator designs, and electrically adjustable switch antenna structures. However, in practical applications, these solutions struggle to simultaneously meet the requirements of miniaturization, switching reliability, and signal transmission stability.

[0004] In the existing technology, the array antenna combination scheme integrates multiple independent antenna elements on a single planar carrier. This design not only results in a large overall size of the multi-antenna device using the array antenna combination scheme, but also easily leads to electromagnetic coupling interference between the antenna elements on the multi-antenna device using the array antenna combination scheme, thereby reducing the radiation efficiency of the multi-antenna device using the array antenna combination scheme.

[0005] In the existing technology, the multi-band shared radiator design scheme covers multiple frequency bands through a single radiating structure. Although this design achieves the miniaturization of multi-antenna devices using the multi-band shared radiator design scheme, due to the structural limitations of the radiator, it is difficult to simultaneously achieve impedance matching and radiation performance of each frequency band. As a result, multi-antenna devices using the multi-band shared radiator design scheme have defects such as signal attenuation and increased VSWR in some frequency bands.

[0006] To address the need for switching between multiple antennas, existing technologies often employ electrically tunable switching circuits to achieve the switching between different antenna elements, such as tuning switching structures based on RF switches and variable capacitors. While such designs can achieve antenna function switching, electronic components such as RF switches are susceptible to electromagnetic interference, resulting in defects such as response delay, poor contact, and complex circuit structure in the switching of antenna elements.

[0007] In existing technologies, rotating multi-antenna devices are mostly just rotating and adjusting a single antenna element, or simply switching between two types of antenna elements. They do not adopt an integrated design of multiple independent antenna elements, thus failing to meet the diverse communication needs of various scenarios.

[0008] In the existing technology, the radiators of multi-antenna devices that are tetrahedral or pyramidal in shape have a uniform reflective mesh or radiating surface on each side. There is no design of multiple independent antenna units, no separate structure, and no way to switch between different antenna units by rotation.

[0009] In existing technologies, split-type multi-antenna devices only optimize the structural layout of the feed network, without incorporating a mechanical rotation structure to achieve switching control of multiple antennas.

[0010] In summary, traditional multi-antenna devices that require switching between different antenna elements suffer from drawbacks such as large size, poor switching stability, and susceptibility to coupling interference. Summary of the Invention

[0011] The multi-antenna device provided by the present invention aims to solve at least some of the defects of existing multi-antenna devices.

[0012] This invention provides a multi-antenna device. The multi-antenna device includes multiple different antenna elements, and further includes: A feed element having a feed interface that can be adapted to multiple different antenna elements; A radiator having multiple radiating surfaces is movably mounted on the feed body so that the radiator can rotate relative to the feed body; The multiple different antenna elements are independent of each other, and each of the radiating surfaces is provided with a corresponding antenna element; The radiator can drive multiple different antenna units to rotate according to a preset configuration, so as to switch any different antenna unit to be connected to the same feed interface.

[0013] In some embodiments, the radiator and the feeder are separate structures.

[0014] In some embodiments, the feed body cannot rotate, and the radiator can rotate relative to the feed body.

[0015] In some embodiments, the plurality of antenna elements differ in that they are in different frequency bands and / or different standards.

[0016] In some embodiments, the multi-antenna device further includes: A connector is disposed at the top of the feed body, and the radiator is movably connected to the feed body through the connector.

[0017] In some embodiments, the radiator has an opposing upper surface and a lower surface in a first direction, and the radiator has a mounting hole that penetrates the upper surface and the lower surface. The radiator is a polyhedral structure extending along the first direction, and the first direction is orthogonal to the normals of the plurality of radiating surfaces.

[0018] In some embodiments, the connector includes at least: The fixing part is installed at the top of the feed body; A rotating part is inserted into the mounting hole of the radiator so that the radiator can rotate relative to the feed body.

[0019] In some embodiments, the feed body has a feed structure, and any different antenna element is electrically connected to the same feed interface through the feed structure.

[0020] In some embodiments, the power supply structure includes at least: A feed line, one end of which is connected to any different antenna element, and the other end of which is provided with a feed point; A grounding wire is electrically connected to the feed point so that the grounding wire serves as the feed point of the feed structure.

[0021] In some embodiments, the power supply has a fixed mounting position, and the power supply forms a communication connection with a communication terminal or external device through the fixed mounting position.

[0022] At least one beneficial effect of the multi-antenna device provided in this embodiment of the invention is that the multi-antenna device includes a feed body, a radiator, and multiple different antenna elements. The radiator has multiple radiating surfaces and is movably mounted on the feed body so that the radiator can rotate relative to the feed body. The multiple different antenna elements are independent of each other, and each radiating surface is provided with a corresponding antenna element. The radiator can drive the multiple different antenna elements to rotate according to a preset situation to switch any different antenna element to connect to the same feed interface. In summary, the multi-antenna device arranges multiple different antenna elements one-to-one on multiple radiating surfaces, so that the multiple different antenna elements can follow the rotation of the radiator to achieve rapid switching, thereby adapting to the wireless communication needs in different scenarios. This design gives the multi-antenna device the advantages of simple structure, low cost, convenient maintenance, wide scenario adaptability, strong switching reliability, and strong anti-interference. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is an exploded view of the multi-antenna device provided in an embodiment of the present invention; Figure 2 This is a front view schematic diagram of the feeder provided in an embodiment of the present invention; Figure 3 This is a front view schematic diagram of the first antenna element provided in an embodiment of the present invention; Figure 4 This is a front view schematic diagram showing the width dimension of the first antenna unit provided in an embodiment of the present invention; Figure 5 This is a front view schematic diagram showing the length dimensions of the first antenna unit provided in an embodiment of the present invention; Figure 6 This is a front view schematic diagram of the second antenna unit provided in an embodiment of the present invention; Figure 7 This is a front view schematic diagram showing the width dimension of the second antenna unit provided in an embodiment of the present invention; Figure 8 This is a front view schematic diagram showing the length dimensions of the second antenna unit provided in an embodiment of the present invention; Figure 9 This is a front view schematic diagram of the third antenna unit provided in an embodiment of the present invention; Figure 10 This is a front view schematic diagram showing the width dimension of the third antenna unit provided in an embodiment of the present invention; Figure 11 This is a front view schematic diagram showing the length dimensions of the third antenna unit provided in an embodiment of the present invention; Figure 12 This is a front view schematic diagram of the fourth antenna unit provided in an embodiment of the present invention; Figure 13 This is a front view schematic diagram showing the width dimension of the fourth antenna unit provided in this embodiment of the invention; Figure 14 This is a front view schematic diagram showing the length dimensions of the fourth antenna unit provided in this embodiment of the invention; Figure 15 This is a schematic diagram of the simulation results of S11 when switching to the first antenna element according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the simulation results of the total efficiency when switching to the first antenna element according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the simulation results of S11 when switching to the second antenna unit according to an embodiment of the present invention; Figure 18 This is a schematic diagram of the simulation results of the total efficiency when switching to the second antenna unit according to an embodiment of the present invention; Figure 19 This is a schematic diagram of the simulation results of S11 when switching to the third antenna element according to an embodiment of the present invention; Figure 20 This is a schematic diagram of the simulation results of the total efficiency when switching to the third antenna element according to an embodiment of the present invention; Figure 21 This is a schematic diagram of the simulation results of S11 when switching to the fourth antenna element according to an embodiment of the present invention; Figure 22 This is a schematic diagram of the simulation results of the total efficiency when switching to the fourth antenna element according to an embodiment of the present invention.

[0025] Figure label: 100. Multi-antenna device; 1. Feed body; 11. Feed line; 12. Feed point; 13. Grounding wire; 2. Radiator; 201. Mounting hole; 3. First antenna element; 31. First part; 32. Second part; 33. Third part; 34. Fourth part; 35. Fifth part; 4. Second antenna element; 41. Sixth part; 42. Seventh part; 43. Eighth part; 44. Ninth part; 5. Third antenna element; 51. Tenth part; 52. Eleventh part; 53. Twelfth part; 54. Thirteenth part; 55. Fourteenth part; 6. Fourth antenna element; 61. Fifteenth part; 62. Sixteenth part; 63. Seventeenth part; 64. Eighteenth part; 65. Nineteenth part; 66. Twentieth part; 67. Twenty-first part; 7. Connector; 71. Fixing part; 72. Rotating part; w1, First width dimension; w2, Second width dimension; w3, Third width dimension; w4, Fourth width dimension; w5, Fifth width dimension; w6, Sixth width dimension; w7, Seventh width dimension; w8, Eighth width dimension; w9, Ninth width dimension; w10, Tenth width dimension; w11, Eleventh width dimension; w12, Twelfth width dimension; w13, Thirteenth width dimension; w14, Fourteenth width dimension; w15, Fifteenth width dimension; w16, Sixteenth width dimension; w17, Seventeenth width dimension; w18, Eighteenth width dimension; w19, Nineteenth width dimension; w20, Twentieth width dimension; w21, Twenty-first width dimension; L1, First length dimension; L2, Second length dimension; L3, Third length dimension; L4, Fourth length dimension; L5, Fifth length dimension; L6, Sixth length dimension; L7, Seventh length dimension; L8, Eighth length dimension; L9, Ninth length dimension; L10, Tenth length dimension; L11, Eleventh length dimension; L12, Twelfth length dimension; L13, Thirteenth length dimension; L14, Fourteenth length dimension; L15, Fifteenth length dimension; L16, Sixteenth length dimension; L17, Seventeenth length dimension; L18, Eighteenth length dimension; L19, Nineteenth length dimension; L20, Twentieth length dimension; D. Diameter. Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0027] It should be noted that, unless otherwise expressly specified and limited, the terms "mutually orthogonal," "normal," "first direction," "along," "towards," "width direction," "length direction," etc., used in this specification to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "installed," "connected," "joined," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Furthermore, the terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," "ninth," "tenth," "eleventh," "twelfth," "thirteenth," "fourteenth," "fifteenth," "sixteenth," "seventeenth," "eighteenth," "nineteenth," "twentieth," and "twentieth-first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," "ninth," "tenth," "eleventh," "twelfth," "thirteenth," "fourteenth," "fifteenth," "sixteenth," "seventeenth," "eighteenth," "nineteenth," "twentieth," and "twentieth-first" may explicitly or implicitly include one or more of that feature; "multiple" or "several" means two or more; and "and / or" includes any and all combinations of one or more of the associated listed items. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Please see Figure 1 and Figure 2 The multi-antenna device 100 includes a feed element 1, a radiator 2, and multiple different antenna elements.

[0029] Different antenna elements have different radiation characteristics to adapt to complex application environments such as communication in different frequency bands, signal coverage enhancement, and anti-interference.

[0030] The aforementioned feed element 1 has a feed interface, and the feed interface adopts a universal design to adapt to the feed requirements of multiple different antenna elements.

[0031] The radiator 2 described above has multiple radiating surfaces, and the radiator 2 is movably mounted on the feeder 1 so that the radiator 2 can rotate relative to the feeder 1.

[0032] The multiple different antenna elements are independent of each other, and each radiating surface is provided with a corresponding antenna element. This indicates that the multi-antenna device 100 adopts an integrated design of multiple independent antenna elements to adapt to the communication needs of multiple frequency bands and multiple standards.

[0033] The radiator 2 can drive multiple different antenna elements to rotate according to a preset configuration, so as to switch any different antenna element to be connected to the same feed interface.

[0034] In this embodiment, the multi-antenna device 100 replaces complex electronic tuning devices with mechanical rotation, thereby simplifying the design and manufacturing process. This design can reduce the number of devices used, thereby reducing manufacturing costs. As a result, the multi-antenna device 100 has the advantages of convenient maintenance, simple structure and controllable cost.

[0035] In some embodiments, such as Figure 1 and Figure 2 As shown, the radiator 2 and the feeder 1 are separate structures, thus forming an upper and lower separate design.

[0036] The feed body 1 located at the lower part of the multi-antenna device 100 is a fixed feed area, while the radiator 2 located at the upper part of the multi-antenna device 100 is a rotatable radiating area. Therefore, the multi-antenna device 100 can quickly switch between different antenna elements by rotating the radiator 2, thereby enabling the multi-antenna device 100 to adapt to the wireless communication needs of multiple scenarios.

[0037] In some embodiments, such as Figure 1 and Figure 2 As shown, the feed body 1 cannot rotate, while the radiator 2 can rotate relative to the feed body 1.

[0038] In this embodiment, the multi-antenna device 100 adopts a split mechanical rotation switching design, which eliminates the traditional electronic switching circuit, structurally avoids electromagnetic interference, and eliminates switching failures, thereby enhancing the switching reliability and anti-interference capability of the multi-antenna device 100.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the differences between the multiple antenna elements lie in their frequency bands and / or different standards.

[0040] In this embodiment, the multi-antenna device 100 can quickly switch between various antenna elements of different frequency bands or different standards by rotating to meet the diverse wireless communication needs of multiple frequency bands and multiple scenarios, thereby giving the multi-antenna device 100 the advantage of wide scenario adaptability.

[0041] In some embodiments, such as Figure 1 and Figure 2 As shown, the multi-antenna device 100 also includes a connector 7.

[0042] The connector 7 is located at the top of the feed body 1, and the radiator 2 is movably connected to the feed body 1 through the connector 7.

[0043] In this embodiment, the connector 7 includes, but is not limited to, a conductive slip ring and a spring pin.

[0044] The functions of connector 7 include, but are not limited to: connector 7 achieving stable and reliable contact between the fixed feed body 1 and the rotatable radiator 2 through elastic deformation characteristics (e.g., the compression and rebound of the spring pin or the rotational contact of the conductive slip ring); when the radiator 2 rotates, the elastic design of connector 7 can compensate for displacement caused by mechanical tolerances, vibration, or thermal expansion and contraction, thereby avoiding signal interruption or contact resistance fluctuations caused by gaps or misalignments at the contact points, thus enabling different antenna elements to have the advantages of stable signal transmission and low loss during switching. Connector 7 also undertakes bidirectional signal transmission functions; on the one hand, it receives external signals (such as radio frequency signals, control commands) or power from communication terminals or external devices and introduces them into the feed body 1 through the fixed mounting position; on the other hand, it transmits the processed signals to the antenna elements on the radiator 2 through connector 7, supporting the dynamic feeding requirements of the polyhedral antenna in different rotation states. The connector 7 can also adapt to the feeding requirements of different polyhedral antenna elements; for example, by adjusting the number / layout of the spring pins or the number of conductive rings of the slip ring, the number of feeding points and signal bandwidth of different antenna arrays can be matched. Furthermore, the flexibility of the connector 7 can accommodate the dimensional tolerances or installation errors of different rotating bodies, thereby reducing the stringent requirements on the manufacturing precision of the radiator and thus improving the flexibility and scalability of the multi-antenna device design.

[0045] In some embodiments, such as Figure 1 and Figure 2 As shown, the radiator 2 has an upper surface and a lower surface opposite each other in the first direction, and the radiator 2 has a mounting hole 201 that penetrates the upper surface and the lower surface.

[0046] Among them, the radiator 2 is a polyhedral structure extending along the first direction, and the first direction is orthogonal to the normals of the multiple radiating surfaces.

[0047] In some embodiments, such as Figure 1 and Figure 2As shown, the connector 7 includes at least a fixed part 71 and a rotating part 72 (the connector 7 is a conductive slip ring at this time).

[0048] The fixing part 71 is installed at the top of the feed body 1; the rotating part 72 is inserted into the mounting hole 201 of the radiator 2 so that the radiator 2 can rotate relative to the feed body 1.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, the feed body 1 has a feed structure, and any different antenna element is electrically connected to the same feed interface through the feed structure.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the power supply structure includes at least: a feeder 11 and a grounding wire 13.

[0051] One end of the feed line 11 is connected to any different antenna element, and the other end of the feed line 11 is provided with a feed point 12.

[0052] An electrical connection is formed between the grounding wire 13 and the feed point 12, so that the grounding wire 13 serves as the feed point of the feed structure.

[0053] In this embodiment, the feeder 11 includes, but is not limited to, cable lines (Cable is a cable, which here usually refers to a coaxial cable) and microstrip lines.

[0054] In some embodiments, such as Figure 1 and Figure 2 As shown, the power supply 1 has a fixed mounting position, and the power supply 1 forms a communication connection with a communication terminal or external device through the fixed mounting position to input or output signals.

[0055] Preferably, the radiator 2 is a rectangular tetrahedron, but it can also be extended to regular polyhedra such as regular hexahedrons and regular octahedrons.

[0056] In this embodiment, the radiator 2 is described as a rectangular tetrahedron. It needs to be equipped with four different and independent antenna elements. These four different and independent antenna elements are specifically the first antenna element 3, the second antenna element 4, the third antenna element 5, and the fourth antenna element 6.

[0057] like Figures 3-5 As shown, the first antenna element 3 consists of a first part 31, a second part 32, a third part 33, a fourth part 34, and a fifth part 35.

[0058] The first part 31 is trapezoidal, the second part 32, the third part 33 and the fourth part 34 are rectangular, and the fifth part 35 is triangular.

[0059] The first width dimension w1 of the end of the first part 31 near the feed body 1 in its width direction is smaller than the second width dimension w2 of the other end of the first part 31 in its width direction.

[0060] The second part 32 has a third width dimension w3 in its width direction, the fourth part 34 has a fourth width dimension w4 in its width direction, and the fifth part 35 has a fifth width dimension w5 in its width direction away from the tip, which is equal to the second width dimension w2 mentioned above.

[0061] The length directions of the first part 31, the second part 32, the fourth part 34 and the fifth part 35 are parallel to the first direction, and the length direction of the third part 33 is orthogonal to the first direction.

[0062] To help readers understand the concept of this invention, a simulation experiment of the first antenna element 3 is conducted below.

[0063] like Figures 3-5 As shown, the first width dimension w1 is 2.98mm, the second width dimension w2, the third width dimension w3, the fourth width dimension w4 and the fifth width dimension w5 are all 6.21mm, and the sixth width dimension w6 of the third part 33 in its width direction is 4mm.

[0064] The first part 31 has a first length dimension L1 of 4.4 mm in its length direction, the second part 32 has a second length dimension L2 of 11.5 mm in its thickness direction, the third part 33 has a third length dimension L3 of 12 mm in its length direction, the fourth part 34 has a fourth length dimension L4 of 4.93 mm in its length direction, and the fifth part 35 has a fifth length dimension L5 of 7.45 mm in its length direction.

[0065] The first part 31 is connected to the feed line 11 at one end near the feed body 1. The other end of the first part 31 is connected to one end of the second part 32. The other end of the second part 32 is connected to one side of the third part 33 and is located in the middle of the third part 33. One end of the fourth part 34 is connected to the other side of the third part 33 and is located in the middle of the third part 33. The fifth part 35 is connected to the other end of the fourth part 34 at one end away from the tip.

[0066] The simulation results of the return loss of the first antenna element 3 are as follows: Figure 15 As shown, from Figure 15The simulation results directly show that multiple troughs of return loss S11 less than -10dB occur within the operating frequency band from 0GHz to 10GHz. Specifically, at a frequency of approximately 0.8GHz, the corresponding S11 is approximately -22.4dB; at a frequency of approximately 1GHz, the corresponding S11 is approximately -12.9dB; at a frequency of approximately 2.7GHz, the corresponding S11 is approximately -13.2dB; at a frequency of approximately 2.8GHz, the corresponding S11 is approximately -13.7dB; at a frequency of approximately 4.2GHz, the corresponding S11 is approximately -31.9dB; at a frequency of approximately 5.7GHz, the corresponding S11 is approximately -15dB; at a frequency of approximately 6.4GHz, the corresponding S11 is approximately -31.6dB; and at a frequency of approximately 8.1GHz, the corresponding S11 is approximately -16.1dB.

[0067] The simulation results of the overall efficiency of the first antenna element 3 are as follows: Figure 16 As shown, from Figure 16 As can be directly seen from the simulation results, the total efficiency within the 0GHz to 10GHz operating frequency band exhibits multiple main peaks. Specifically, at a frequency of approximately 1GHz, the corresponding total efficiency is approximately 0.78% or 78%; at a frequency of approximately 2.7GHz, the corresponding total efficiency is approximately 0.61% or 61%; at a frequency of approximately 4.2GHz, the corresponding total efficiency is approximately 0.58% or 58%; at a frequency of approximately 5.7GHz, the corresponding total efficiency is approximately 0.51% or 51%; and at a frequency of approximately 6.4GHz, the corresponding total efficiency is approximately 0.49% or 49%.

[0068] Furthermore, at a frequency of approximately 0.8 GHz, the corresponding total efficiency is approximately 0.3 or 30%; at a frequency of approximately 2.8 GHz, the corresponding total efficiency is approximately 0.58 or 58%; and at a frequency of approximately 8.1 GHz, the corresponding total efficiency is approximately 0.47 or 47%.

[0069] It can be seen that at a frequency of approximately 1 GHz, S11 is less than -10 dB (approximately -12.9 dB), and the overall efficiency is the highest relative to other frequencies (approximately 78%). This indicates that the antenna radiation efficiency of the first antenna element 3 is extremely high or other losses are minimal at this frequency. In summary, the first antenna element 3 is suitable for using 1 GHz as its main operating frequency.

[0070] To help readers understand the concept of this invention, a simulation experiment of the actual second antenna unit 4 is presented below.

[0071] like Figures 6-8As shown, the second antenna unit 4 consists of the sixth part 41, the seventh part 42, the eighth part 43, and the ninth part 44.

[0072] Parts 6.41, 7.42, 8.43, and 9.44 are all rectangular strips.

[0073] The seventh width dimension w7 of the sixth part 41 in its width direction is 2.3mm, the eighth width dimension w8 of the seventh part 42 in its width direction is 12mm, the ninth width dimension w9 of the eighth part 43 in its width direction is 2.5mm, and the tenth width dimension w10 of the ninth part 44 in its width direction is 2mm.

[0074] The sixth length dimension L6 of the sixth part 41 in its length direction is equal to the ninth length dimension L9 of the ninth part 44 in its length direction, both being 6.0 mm.

[0075] The seventh length dimension L7 of the seventh part 42 in its length direction is 33 mm, and the eighth length dimension L8 of the eighth part 43 in its length direction is 4.0 mm.

[0076] The sixth part 41 is connected to the feed line 11 at one end near the feed body 1. The other end of the sixth part 41 is connected to the bottom edge of the seventh part 42 and is located in the middle. One end of the eighth part 43 is connected to the right edge of the seventh part 42 and is flush with the bottom edge of the seventh part 42. The ninth part 44 is connected to the bottom edge of the eighth part 43 and is flush with the right edge of the eighth part 43 at one end away from the feed body 1. The seventh part 42 extends away from the sixth part 41 along the first direction in a direction away from the feed body 1. The other end of the ninth part 44 extends along the first direction in a direction close to the feed body 1.

[0077] The simulation results of the return loss of the second antenna element 4 are as follows: Figure 17 As shown, from Figure 17 As can be directly seen from the simulation results, multiple troughs with return loss S11 less than -10dB appear within the operating frequency band from 0GHz to 10GHz. Specifically, at a frequency of approximately 0.4GHz, the corresponding S11 is approximately -17.7dB; at a frequency of approximately 4.3GHz, the corresponding S11 is approximately -23.6dB; at a frequency of approximately 4.5GHz, the corresponding S11 is approximately -30dB; at a frequency of approximately 5.4GHz, the corresponding S11 is approximately -11.4dB; and at a frequency of approximately 6.4GHz, the corresponding S11 is approximately -10.5dB.

[0078] Furthermore, within the frequency range of 1 GHz to 4 GHz, the corresponding S11 is greater than -10 dB, therefore this frequency range is not of reference value; at a frequency of approximately 8 GHz, the corresponding S11 is approximately -11.8 dB.

[0079] The simulation results of the overall efficiency of the second antenna element 4 are as follows: Figure 18 As shown, from Figure 18 As can be directly seen from the simulation results, the total efficiency in the 0GHz to 10GHz operating frequency band shows multiple main peaks. Specifically, at a frequency of approximately 4.3GHz, the corresponding total efficiency is approximately 0.57% or 57%; at a frequency of approximately 5.4GHz, the corresponding total efficiency is approximately 0.42% or 42%; at a frequency of approximately 6.4GHz, the corresponding total efficiency is approximately 0.45% or 45%; and at a frequency of approximately 8GHz, the corresponding total efficiency is approximately 0.55% or 55%.

[0080] As can be seen, at a frequency of approximately 4.3 GHz, S11 is less than -10 dB (approximately -23.6 dB), and the overall efficiency is the highest relative to other frequency points (approximately 57%). This indicates that the antenna radiation efficiency of the second antenna element 4 is extremely high or other losses are minimal at this frequency. In summary, the second antenna element 4 is suitable to use 4.3 GHz as its main operating frequency.

[0081] To help readers understand the concept of this invention, a simulation experiment of the physical third antenna element 5 is presented below.

[0082] like Figures 9-11 As shown, the third antenna element 5 consists of part 10 51, part 11 52, part 12 53, part 13 54 and part 14 55.

[0083] Parts 10 (51), 11 (52), 12 (53), 13 (54), and 14 (55) are all rectangular strips.

[0084] Part 10, 51, has an eleventh width dimension w11 in its width direction of 2.3 mm.

[0085] The twelfth width dimension w12 of part 11 52 in its width direction, the thirteenth width dimension w13 of part 12 53 in its width direction, the fourteenth width dimension w14 of part 13 54 in its width direction, and the fifteenth width dimension w15 of part 14 55 in its width direction are all equal, all being 2mm.

[0086] Part 10, 51, has a tenth length dimension L10 of 8 mm in its length direction; Part 11, 52, has an eleventh length dimension L11 of 8.15 mm in its length direction; Part 12, 53, has a twelfth length dimension L12 of 36 mm in its length direction; Part 13, 54, has a thirteenth length dimension L13 of 17 mm in its length direction; and Part 14, 55, has a fourteenth length dimension L14 of 46 mm in its length direction.

[0087] One end of the tenth part 51 near the feed body 1 is connected to the feed line 11. The other end of the tenth part 51 is connected to the bottom edge of the eleventh part 52 and is flush with the right edge of the eleventh part 52. The end of the eleventh part 52 away from the tenth part 51 is connected to the right edge of the twelfth part 53 and is flush with the bottom edge of the twelfth part 53. The end of the twelfth part 53 away from the eleventh part 52 is connected to the bottom edge of the thirteenth part 54 and is flush with the left edge of the thirteenth part 54. The end of the thirteenth part 54 away from the twelfth part 53 is connected to the left edge of the fourteenth part 55 and is flush with the top edge of the fourteenth part 55. The end of the fourteenth part 55 away from the thirteenth part 54 extends in the first direction toward the feed body 1.

[0088] The simulation results of the return loss of the third antenna element 5 are as follows: Figure 19 As shown, from Figure 19 The simulation results directly show that multiple troughs with return loss S11 less than -10dB appear within the operating frequency band from 0GHz to 10GHz. Specifically, at a frequency of approximately 0.9GHz, the corresponding S11 is approximately -17.3dB; at a frequency of approximately 1.4GHz, the corresponding S11 is approximately -16dB; at a frequency of approximately 2.2GHz, the corresponding S11 is approximately -12.5dB; at a frequency of approximately 2.8GHz, the corresponding S11 is approximately -14.8dB; at a frequency of approximately 3.9GHz, the corresponding S11 is approximately -18dB; at a frequency of approximately 4.1GHz, the corresponding S11 is approximately -18.2dB; at a frequency of approximately 5.5GHz, the corresponding S11 is approximately -17.8dB; and at a frequency of approximately 6.5GHz, the corresponding S11 is approximately -15.7dB.

[0089] Furthermore, at a frequency of approximately 8 GHz, the corresponding S11 is approximately -11 dB.

[0090] The simulation results of the overall efficiency of the third antenna element 5 are as follows: Figure 20 As shown, from Figure 20As can be directly seen from the simulation results, the total efficiency within the 0GHz to 10GHz operating frequency band exhibits multiple main peaks. Specifically, at a frequency of approximately 0.9GHz, the corresponding total efficiency is approximately 0.485% or 48.5%; at a frequency of approximately 1.4GHz, the corresponding total efficiency is approximately 0.64% or 64%; at a frequency of approximately 2.2GHz, the corresponding total efficiency is approximately 0.61% or 61%; at a frequency of approximately 2.8GHz, the corresponding total efficiency is approximately 0.485% or 48.5%; at a frequency of approximately 3.9GHz, the corresponding total efficiency is approximately 0.6% or 60%; at a frequency of approximately 5.5GHz, the corresponding total efficiency is approximately 0.5% or 50%; at a frequency of approximately 6.5GHz, the corresponding total efficiency is approximately 0.51% or 51%; and at a frequency of approximately 8GHz, the corresponding total efficiency is approximately 0.546% or 54.6%.

[0091] As can be seen, at a frequency of approximately 1.4 GHz, S11 is less than -10 dB (approximately -16 dB), and the overall efficiency is the highest relative to other frequency points (approximately 64%). This indicates that the antenna radiation efficiency of the third antenna element 5 is extremely high or other losses are minimal at this frequency. Meanwhile, at a frequency of approximately 3.9 GHz, S11 is also less than -10 dB (approximately -18 dB), and the overall efficiency is slightly lower than at the 1.4 GHz frequency point, but still approximately 60%. In summary, the third antenna element 5 is suitable for using 1.4 GHz and 3.9 GHz as its main operating frequencies.

[0092] To help readers understand the concept of this invention, a simulation experiment of the physical fourth antenna unit 6 is presented below.

[0093] like Figures 12-14 As shown, the fourth antenna element 6 consists of part 15 61, part 16 62, part 17 63, part 18 64, part 19 65, part 20 66, and part 21 67.

[0094] Parts 15 (61), 17 (63), 18 (64), 19 (65), 20 (66), and 21 (67) are all rectangular strips, while Part 16 (62) is a circular sheet.

[0095] The width dimension w16 of part 61 in the width direction is 2.15 mm, and the diameter dimension D of part 62 is 14 mm.

[0096] The seventeenth width dimension w17 of part 63 in its width direction, the eighteenth width dimension w18 of part 64 in its width direction, the nineteenth width dimension w19 of part 65 in its width direction, the twentieth width dimension w20 of part 66 in its width direction, and the twenty-first width dimension w21 of part 67 in its width direction are all equal, all being 2mm.

[0097] Part 15, 61, has a length dimension L15 of 27.1 mm in its length direction; Part 17, 63, has a length dimension L16 of 3.07 mm in its length direction; Part 18, 64, has a length dimension L17 of 9 mm in its length direction; Part 19, 65, has a length dimension L18 of 46 mm in its length direction; Part 20, 66, has a length dimension L19 of 1 mm in its length direction; and Part 21, 67, has a length dimension L20 of 36 mm in its length direction.

[0098] The end of the fifteenth part 61 near the feeder 1 is connected to the feeder 11, and the other end of the fifteenth part 61, as well as one end of the seventeenth part 63 and the twentieth part 66, are all connected to the sixteenth part 62.

[0099] The other end of the seventeenth part 63 is connected to the bottom edge of the eighteenth part 64 and is flush with the right edge of the eighteenth part 64. The end of the eighteenth part 64 away from the seventeenth part 63 is connected to the right edge of the nineteenth part 65 and is flush with the top edge of the nineteenth part 65. The other end of the twentieth part 66 is connected to the left edge of the twenty-first part 67 and is flush with the top edge of the twenty-first part 67. The end of the nineteenth part 65 away from the eighteenth part 64 and the end of the twenty-first part 67 away from the twentieth part 66 both extend in the first direction toward the direction of the feed body 1.

[0100] The simulation results of the return loss of the fourth antenna element 6 are as follows: Figure 21 As shown, from Figure 21The simulation results directly show that multiple troughs of return loss S11 less than -10dB occur within the operating frequency band from 0GHz to 10GHz. Specifically, at a frequency of approximately 1.5GHz, the corresponding S11 is approximately -22dB; at a frequency of approximately 1.8GHz, the corresponding S11 is approximately -16.8dB; at a frequency of approximately 2.4GHz, the corresponding S11 is approximately -11.6dB; at a frequency of approximately 2.8GHz, the corresponding S11 is approximately -17.7dB; and at... At a frequency of approximately 3.9 GHz, the corresponding S11 is approximately -16.5 dB; at a frequency of approximately 4.2 GHz, the corresponding S11 is approximately -20.3 dB; at a frequency of approximately 5.5 GHz, the corresponding S11 is approximately -14.1 dB; at a frequency of approximately 5.9 GHz, the corresponding S11 is approximately -15 dB; at a frequency of approximately 7.1 GHz, the corresponding S11 is approximately -14.3 dB; and at a frequency of approximately 8.2 GHz, the corresponding S11 is approximately -15 dB.

[0101] The simulation results of the overall efficiency of the fourth antenna element 6 are as follows: Figure 22 As shown, from Figure 22 As can be directly seen from the simulation results, the total efficiency in the 0GHz to 10GHz operating frequency band shows multiple main peaks. Specifically, at a frequency of approximately 1.5GHz, the corresponding total efficiency is approximately 0.50 or 50%; at a frequency of approximately 1.8GHz, the corresponding total efficiency is approximately 0.51 or 51%; at a frequency of approximately 2.4GHz, the corresponding total efficiency is approximately 0.54 or 54%; and at a frequency of approximately 3.9GHz, the corresponding total efficiency is approximately 0.555 or 55.5%.

[0102] As can be seen, at a frequency of approximately 3.9 GHz, S11 is less than -10 dB (approximately -16.5 dB), and the overall efficiency is the highest compared to other frequency points (approximately 55.5%). This indicates that the fourth antenna element 6 has extremely high antenna radiation efficiency or minimal other losses at this frequency. Meanwhile, at a frequency of approximately 2.4 GHz, S11 is also less than -10 dB (approximately -11.6 dB), and the overall efficiency is slightly lower than at 3.9 GHz, but still approximately 54%. Furthermore, at a frequency of approximately 1.8 GHz, S11 is also less than -10 dB (approximately -16.8 dB), and the overall efficiency is slightly lower than at 2.4 GHz, but still approximately 51%. Additionally, at a frequency of approximately 1.5 GHz... At the GHz frequency point, S11 is also less than -10dB (approximately -22dB), and the overall efficiency is similar to that at the 1.8GHz frequency point, approximately 50%. In summary, the fourth antenna element 6 is suitable for using 3.91GHz, 2.43GHz, 1.8GHz and 1.5GHz as its main operating frequencies.

[0103] In summary, the multi-antenna device provided in this embodiment of the invention includes a feed body, a radiator, and multiple different antenna elements. The radiator has multiple radiating surfaces and is movably mounted on the feed body so that it can rotate relative to the feed body. The multiple different antenna elements are independent of each other, and each radiating surface is provided with a corresponding antenna element. The radiator can drive the multiple different antenna elements to rotate according to a preset situation to switch any different antenna element to the same feed interface. In summary, this multi-antenna device arranges multiple different antenna elements one-to-one on multiple radiating surfaces, so that the multiple different antenna elements can follow the rotation of the radiator to achieve rapid switching, thereby adapting to the wireless communication needs in different scenarios. This design gives the multi-antenna device the advantages of simple structure, low cost, convenient maintenance, wide scenario adaptability, strong switching reliability, and strong anti-interference.

[0104] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention, but it should not be construed as limiting the specific implementation of the invention to these descriptions. Those skilled in the art will recognize that various modifications and improvements can be made without departing from the concept of the present invention, and all such modifications and improvements fall within the scope of protection of the present invention.

Claims

1. A multi-antenna device, comprising multiple different antenna elements, characterized in that, Also includes: A feed element having a feed interface that can be adapted to multiple different antenna elements; A radiator having multiple radiating surfaces is movably mounted on the feed body so that the radiator can rotate relative to the feed body; The multiple different antenna elements are independent of each other, and each of the radiating surfaces is provided with a corresponding antenna element; The radiator can drive multiple different antenna units to rotate according to a preset configuration, so as to switch any different antenna unit to be connected to the same feed interface.

2. The multi-antenna device according to claim 1, characterized in that, The radiator and the feeder are separate structures.

3. The multi-antenna device according to claim 1, characterized in that, The feed body cannot rotate, while the radiator can rotate relative to the feed body.

4. The multi-antenna device according to claim 1, characterized in that, The differences between the various antenna elements lie in their frequency bands and / or different standards.

5. The multi-antenna device according to claim 1, characterized in that, Also includes: A connector is disposed at the top of the feed body, and the radiator is movably connected to the feed body through the connector.

6. The multi-antenna device according to claim 5, characterized in that, The radiator has an upper surface and a lower surface opposite each other in a first direction, and the radiator has a mounting hole that penetrates the upper surface and the lower surface. The radiator is a polyhedral structure extending along the first direction, and the first direction is orthogonal to the normals of the plurality of radiating surfaces.

7. The multi-antenna device according to claim 6, characterized in that, The connector includes at least: The fixing part is installed at the top of the feed body; A rotating part is inserted into the mounting hole of the radiator so that the radiator can rotate relative to the feed body.

8. The multi-antenna device according to any one of claims 1-7, characterized in that, The feed body has a feed structure, and any different antenna element can be electrically connected to the same feed interface through the feed structure.

9. The multi-antenna device according to claim 8, characterized in that, The power supply structure includes at least: A feed line, one end of which is connected to any different antenna element, and the other end of which is provided with a feed point; A grounding wire is electrically connected to the feed point so that the grounding wire serves as the feed point of the feed structure.

10. The multi-antenna device according to any one of claims 1-7, characterized in that, The power supply has a fixed mounting position, and the power supply forms a communication connection with a communication terminal or external device through the fixed mounting position.

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