Communication equipment and multi-beam Luneburg lens antenna

Abstract

The present application relates to a communication device and a multi-beam Luneburg lens antenna, which cross-combines two adjacent first polarization feed parts and cross-combines two adjacent second polarization feed parts to obtain multiple beams with different maximum beam directions and different horizontal beam widths, thereby meeting the multi-stream signal requirements of the coverage area. In addition, since the two first polarization feed parts of the same group adopt equal-amplitude in-phase feeding, and the two second polarization feed parts of the same group adopt equal-amplitude in-phase feeding, the equal-amplitude in-phase feeding method can enable the synthesized beam to obtain the maximum gain effect, and at the same time, the graph of the synthesized beam can be symmetrical, and the signal strength distribution is more uniform in the application of indoor WiFi equipment.

Description

Technical Field

[0001] The present application relates to the field of mobile communication technology, and in particular to a communication device and a multi-beam Luneburg lens antenna. Background Art

[0002] The Luneburg lens has axial symmetry, so it has inherent advantages as a multi-beam antenna. In addition, the Luneburg lens does not require a complex feeding network, and only needs to arrange multiple feed sources near the lens focus. The multiple feed sources in the related art are arranged in sequence around the Luneburg lens, and multiple beams pointing to different directions can be formed accordingly. However, in the dual-polarized Luneburg lens antenna in the related art, the two polarizations of each feed source are respectively provided with ports. When working, after the ports corresponding to the two polarizations of each feed source are connected to the feed signal, according to the antenna radiation diagram, it can be seen that multiple feed sources correspond to multiple beams one by one, and the two polarizations of each beam cover the same area. Therefore, only two-stream signals can be formed in the coverage area of ​​each beam, which cannot meet the needs of multi-stream signals in WiFi devices. In addition, the area covered by the beam is the area of ​​normal communication, and there will be a coverage blind area between two adjacent beams, which makes the signal distribution uniformity poor and cannot meet the needs of normal communication. Summary of the invention

[0003] Based on this, it is necessary to overcome the defects of the prior art and provide a communication device and a multi-beam Luneburg lens antenna, which can meet the needs of multi-stream signals in WiFi devices and at the same time have more uniform signal distribution.

[0004] A multi-beam Luneburg lens antenna, the multi-beam Luneburg lens antenna comprising:

[0005] Luneburg lens;

[0006] n dual-polarization directional antenna units, the n dual-polarization directional antenna units are arranged in sequence around the circumference of the Luneburg lens, n≥3, each of the dual-polarization directional antenna units is provided with a first polarization feeding portion and a second polarization feeding portion, and the first polarization feeding portions of the n dual-polarization directional antenna units are numbered X in the order of arrangement 1 , X 2 ......X n , the second polarization feeding parts of the n dual-polarization directional antenna units are numbered as Y in the order of arrangement 1 , Y 2 ......Y n ;

[0007] When n is an odd number, number X 1 The first polarization feed section has a port numbered X 2 To No. X nThe first polarization feeding parts of Y are grouped into a group with two adjacent first polarization feeding parts in the same group, and the two first polarization feeding parts of Y are fed with equal amplitude and same phase. n The second polarization feed section has a port numbered Y 1 To No. Y n-1 The second polarization feeding parts are grouped into a group with every two adjacent second polarization feeding parts in the order of numbering, and the two second polarization feeding parts in the same group are fed with equal amplitude and in phase;

[0008] When n is an even number, number X 1 The first polarization feeder and number X n The first polarization feeder is provided with a port numbered X 2 To No. X n-1 The first polarization feeding parts of Y are grouped into a group with two adjacent first polarization feeding parts in the same group, and the two first polarization feeding parts of Y are fed with equal amplitude and same phase. 1 To No. Y n The second polarization feeding parts are grouped into a group with every two adjacent second polarization feeding parts in the order of numbering, and the two second polarization feeding parts in the same group are fed with equal amplitude and in phase.

[0009] In one embodiment, the multi-beam Luneburg lens antenna also includes a first power divider and a second power divider; two of the first polarization feeding parts in the same group are correspondingly provided with a port, and the two of the first polarization feeding parts in the same group are connected to the corresponding ports through the first power divider; two of the second polarization feeding parts in the same group are correspondingly provided with a port, and the two of the second polarization feeding parts in the same group are connected to the corresponding ports through the second power divider; the first power divider and the second power divider are both one-to-two power dividers, and the amplitude ratio of the two output ports of the power divider is 1:1, and the phase difference is 0.

[0010] In one of the embodiments, n dual-polarization directional antenna units are combined to obtain n+1 beams; the maximum beam directions of the n+1 beams are different from each other.

[0011] In one of the embodiments, the horizontal plane beam width of each of the dual-polarization directional antenna units is the same; the vertical plane beam width of each of the dual-polarization directional antenna units is the same; and the operating frequency of each of the dual-polarization directional antenna units is the same.

[0012] In one of the embodiments, the horizontal plane beam width of the dual-polarization directional antenna unit is 65±5°; the vertical plane beam width of the dual-polarization directional antenna unit is 65±5°; and the operating frequency of the dual-polarization directional antenna unit is 5150MHZ-5850MHZ.

[0013] In one embodiment, the focal length of each of the dual-polarization directional antenna units is the same as that of the Luneburg lens; the focal length of the dual-polarization directional antenna unit and the Luneburg lens is (0.1λ~0.2λ) mm, and λ is the wavelength of the center frequency of the working frequency band of the dual-polarization directional antenna unit.

[0014] In one embodiment, the Luneburg lens is cylindrical or spherical.

[0015] In one of the embodiments, n of the dual-polarization directional antenna units are arranged at equal intervals around the circumference of the Luneburg lens; and an angle formed by the first dual-polarization directional antenna unit and the nth dual-polarization directional antenna unit about the center of the Luneburg lens is less than 180°.

[0016] In one of the embodiments, when there are n dual-polarization directional antenna units, the angle formed between two adjacent dual-polarization directional antenna units with respect to the center of the Luneburg lens is θ, θ=180° / 2n to θ=180° / 1.5n.

[0017] A communication device, comprising the multi-beam Luneburg lens antenna.

[0018] The above-mentioned communication equipment and multi-beam Luneburg lens antenna use Luneburg lenses to easily realize multi-beam characteristics and focusing functions, expand the horizontal coverage area of ​​the multi-beam Luneburg lens antenna in the communication equipment, and improve the gain of the built-in antenna of the communication equipment, thereby enhancing the signal coverage area and coverage capability, and effectively improving the user experience. In addition, the two adjacent first polarization feed parts are cross-combined, and the two adjacent second polarization feed parts are cross-combined to obtain multiple beams with different maximum beam directions and different horizontal beam widths, thereby meeting the multi-stream signal requirements of the coverage area. In addition, since the two first polarization feed parts of the same group adopt equal-amplitude in-phase feeding, and the two second polarization feed parts of the same group adopt equal-amplitude in-phase feeding, the use of equal-amplitude in-phase feeding can make the synthesized beam obtain the maximum gain effect, and at the same time make the graph of the synthesized beam symmetrical, and the signal strength distribution is more uniform in the application of indoor WiFi equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a multi-beam Luneburg lens antenna according to an embodiment of the present application.

[0020] Figure 2 This is a diagram of the combined structure when n is an odd number in the multi-beam Luneburg lens antenna of an embodiment of the present application.

[0021] Figure 3 This is a diagram of the combined structure of a multi-beam Luneburg lens antenna according to an embodiment of the present application when n is an even number.

[0022] Figure 4 This is a diagram of the combined structure of a multi-beam Luneburg lens antenna when n is 3 according to an embodiment of the present application.

[0023] Figure 5 This is a diagram of the combined structure of a multi-beam Luneburg lens antenna when n is 4 according to an embodiment of the present application.

[0024] Figure 6 This is a diagram of the combined structure of a multi-beam Luneburg lens antenna when n is 5 according to an embodiment of the present application.

[0025] Figure 7 1 is the antenna radiation pattern of the multi-beam Luneburg lens antenna when n is 3 according to an embodiment of the present application.

[0026] Figure 8 This is the antenna radiation pattern when the number of dual-polarization directional antenna units in the Longman multi-beam lens antenna in the related art is 3.

[0027] 10. Luneburg lens; 20. Dual-polarization directional antenna unit; 21. First polarization feeder; 22. Second polarization feeder; 30. First power divider; 40. Second power divider; 50. Port; 60. Signal blind spot. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] See also Figure 1 , Figure 1 The structure diagram of a multi-beam Luneburg lens antenna according to an embodiment of the present application is shown. An embodiment of the present application provides a multi-beam Luneburg lens antenna, which includes a Luneburg lens 10 and n dual-polarization directional antenna units 20. The n dual-polarization directional antenna units 20 are arranged in sequence in a circumferential direction around the Luneburg lens 10, and n≥3.

[0030] See also Figure 2 or Figure 3 Each dual-polarized directional antenna unit 20 is provided with a first polarized feeder 21 and a second polarized feeder 22. The first polarized feeder 21 is polarized at +45°, and the second polarized feeder 22 is polarized at -45°.

[0031] The first polarization feeding parts 21 of the n dual-polarization directional antenna units 20 are numbered as X,1 , X 2 ......X n The second polarization feeding parts 22 of the n dual-polarization directional antenna units 20 are numbered Y and Y respectively according to the arrangement order. 1 , Y 2 ......Y n .

[0032] See also Figure 2 When n is an odd number, such as 3, 5, 7, 9 or 11, the number X 1 The first polarization feeder 21 is provided with a port 50, indicated by a reference numeral X 1 The signal fed into the port 50 corresponding to the first polarization feeding unit 21 is focused by the Luneburg lens 10 to obtain a first polarized beam signal.

[0033] In addition, number X 2 To No. X n The first polarization feeders 21 are grouped into two adjacent groups according to the numbering sequence, and the two first polarization feeders 21 in the same group are fed with equal amplitude and in phase. 2 With number X 3 The first polarization feeders 21 are combined into a group, numbered X 4 With number X 5 The first polarization feeders 21 are combined into a group, numbered X n-1 With number X n The first polarization feeders 21 are combined into one group.

[0034] In addition, number X 2 To No. X n The number of groups of the first polarization feeding units 21 combined is (n-1) / 2 in total, and the signals fed into each group are focused by the Luneburg lens 10 to obtain (n-1) / 2 first polarization beam signals.

[0035] Therefore, after n first polarization feeding units 21 are combined, (n+1) / 2 first polarization beam signals can be obtained.

[0036] Similarly, number Y n The second polarization feeder 22 is provided with a port 50. n The signal fed into the port 50 corresponding to the second polarization feeding unit 22 is focused by the Luneburg lens 10 to obtain a beam signal of the second polarization.

[0037] In addition, number Y 1 To No. Y n-1The second polarization feeding parts 22 of the embodiment are grouped into two adjacent ones according to the numbering sequence, and the two second polarization feeding parts 22 of the same group are fed with equal amplitude and in phase; specifically, the second polarization feeding parts 22 numbered Y 1 With number Y 2 The second polarization feeders 22 are combined into a group, numbered Y 3 With number Y 4 The second polarization feeders 22 are combined into a group, numbered Y n-2 With number Y n-1 The second polarization feeding parts 22 are combined into one group.

[0038] In addition, number Y 1 To No. Y n-1 The number of groups of the second polarization feeding units 22 combined is (n-1) / 2 in total, and the signals fed into each group are focused by the Luneburg lens 10 to obtain (n-1) / 2 second polarization beam signals.

[0039] Therefore, after combining n second polarization feeders 22, (n+1) / 2 second polarization beam signals can be obtained. Furthermore, n dual-polarization directional antenna units 20 can obtain n+1 beam signals. In addition, the maximum beam directions of the n+1 beams are different from each other.

[0040] See also Figure 3 When n is an even number, such as 4, 6, 8, 10 or 12, the number X 1 The first polarization feeder 21 and number X n The first polarization feeder 21 is provided with a port 50. 1 The signal fed into the port 50 corresponding to the first polarization feeder 21 is focused by the Luneburg lens 10 to obtain a first polarization beam signal. n The signal fed into the port 50 corresponding to the first polarization feeding unit 21 is focused by the Luneburg lens 10 to obtain a first polarized beam signal.

[0041] In addition, number X 2 To No. X n-1 The first polarization feeders 21 are grouped into two adjacent groups according to the numbering sequence, and the two first polarization feeders 21 in the same group are fed with equal amplitude and in phase. 2 With number X 3 The first polarization feeders 21 are combined into a group, numbered X 4 With number X 5 The first polarization feeders 21 are combined into a group, numbered X n-2 With number X n-1 The first polarization feeders 21 are combined into one group.

[0042] In addition, number X 2 To No. X n-1 The number of groups of the first polarization feeding units 21 combined is (n-2) / 2 in total, and the signals fed into each group are focused by the Luneburg lens 10 to obtain (n-2) / 2 first polarization beam signals.

[0043] Therefore, after n first polarization feeding units 21 are combined, (n+2) / 2 first polarization beam signals can be obtained.

[0044] No. Y 1 To No. Y n The second polarization feeders 22 are grouped into a group of two adjacent second polarization feeders 22 in the order of numbering, and the two second polarization feeders 22 in the same group are fed with equal amplitude and in phase. 1 With number Y 2 The second polarization feeders 22 are combined into a group, numbered Y 3 With number Y 4 The second polarization feeders 22 are combined into a group, numbered Y n-1 With number Y n The second polarization feeding parts 22 are combined into one group.

[0045] In addition, number Y 1 To No. Y n The number of groups of the second polarization feeding units 22 combined is n / 2 in total, and the signals fed into each group are focused by the Luneburg lens 10 to obtain n / 2 second polarization beam signals.

[0046] Therefore, n dual-polarization directional antenna units 20 can obtain n+1 beam signals.

[0047] Please refer to Figures 4 to 6 , Figures 4 to 6 The specific combined structural schematic diagrams of the dual-polarized directional antenna units 20 in the multi-beam Luneburg lens antenna are shown respectively when n is 3, 4 or 5.

[0048] The above-mentioned multi-beam Luneburg lens antenna, using the Luneburg lens 10, is easy to realize the multi-beam characteristics and focusing function, expands the horizontal plane coverage area of ​​the multi-beam Luneburg lens antenna in the communication equipment, and improves the gain of the built-in antenna of the communication equipment, enhances the signal coverage area and coverage capability, and effectively improves the user experience. In addition, the two adjacent first polarization feed parts 21 are cross-combined, and the two adjacent second polarization feed parts 22 are cross-combined to obtain multiple beams with different maximum beam pointing and different horizontal plane beam widths, which meet the multi-stream signal requirements of the coverage area. In addition, since the two first polarization feed parts 21 of the same group adopt equal amplitude and in-phase feeding, and the two second polarization feed parts 22 of the same group adopt equal amplitude and in-phase feeding, the use of equal amplitude and in-phase feeding can make the synthesized beam obtain the maximum gain effect, and at the same time make the graph of the synthesized beam symmetrical, and the signal strength distribution is more uniform in the application of indoor WiFi equipment.

[0049] See also Figure 2 or Figure 3 In one embodiment, the multi-beam Luneburg lens antenna further includes a first power divider 30 and a second power divider 40. Two first polarization feeders 21 of the same group are correspondingly provided with a port 50, and the two first polarization feeders 21 of the same group are connected to the corresponding port 50 through the first power divider 30; two second polarization feeders 22 of the same group are correspondingly provided with a port 50, and the two second polarization feeders 22 of the same group are connected to the corresponding port 50 through the second power divider 40. Optionally, both the first power divider 30 and the second power divider 40 are one-to-two power dividers, and the amplitude ratio of the two output ports of the power divider is, for example, 1:1, and the phase difference is 0. In this way, the two first polarization feeders 21 of the same group are combined and connected to one port 50 by using the first power divider 30, and the two second polarization feeders 22 of the same group are combined and connected to one port 50 by using the second power divider 40, which can reduce the number of ports 50 and reduce costs. In addition, since the two first polarization feeding parts 21 of the same group are respectively provided with a port 50, the two first polarization feeding parts 21 of the same group adopt equal-amplitude and in-phase feeding; since the two second polarization feeding parts 22 of the same group are respectively provided with a port 50, the two second polarization feeding parts 22 of the same group adopt equal-amplitude and in-phase feeding.

[0050] Please refer to Figure 4 , when n is 3, number X 1 The first polarization feeder 21 is provided with a port 50, and the first polarization signal fed in is focused by the Luneburg lens 10 to obtain a first beam signal; 1 With number Y 2The second polarization feeder 22 is combined into a group and connected to a port 50, and the fed second polarization signal is focused by the Luneburg lens 10 to obtain a second beam signal; number X 2 With number X 3 The first polarization feeder 21 is combined into a group and connected to a port 50, and the first polarization signal fed is focused by the Luneburg lens 10 to obtain a third beam signal; number Y 3 The second polarization feeding unit 22 is provided with a port 50, and the fed second polarization signal is focused by the Luneburg lens 10 to obtain a fourth beam signal.

[0051] Please refer to Figure 7 , Figure 7 The antenna pattern when n is 3 is shown. Figure 7 It can be seen that there are 4 beam signals in total, and the 4 beam signals correspond to the first beam signal to the fourth beam signal in the order of arrangement from left to right. The area of ​​the signal blind area 60 between any two adjacent beam signals is relatively small, and the signal distribution is relatively uniform.

[0052] Please refer to Figure 8 , Figure 8 The antenna pattern when n is 3 in the related art is shown. Figure 8 It can be seen that there are three beam signals in total, the area of ​​the signal blind area 60 between any two adjacent beam signals is relatively large, and the signal distribution uniformity is poor.

[0053] Therefore, by comparison Figure 7 and Figure 8 It can be seen that in this embodiment, the use of equal-amplitude and in-phase feeding can make the synthetic beam obtain the maximum gain effect, and at the same time make the graph of the synthetic beam symmetrical, and the signal strength distribution is more uniform in the application of communication equipment; in addition, multiple beams with different maximum beam pointing directions and different horizontal beam widths can be obtained to meet the multi-stream signal requirements of the coverage area.

[0054] Based on the above embodiment, the horizontal beam widths of the three dual-polarization directional antenna units 20 are all, for example, 65±5°; the vertical beam widths of the three dual-polarization directional antenna units 20 are all, for example, 65±5°; and the operating frequencies of the three dual-polarization directional antenna units 20 are all, for example, 5150MHZ-5850MHZ. Figure 7It can be seen that the maximum beam pointing of the first beam signal is -35±3°, the maximum beam pointing of the second beam signal is -17.5±3°, the maximum beam pointing of the third beam signal is 17.5±3°, and the maximum beam pointing of the fourth beam signal is 35±3°. In addition, the horizontal plane beam width of the first beam signal is 30±5°, the horizontal plane beam width of the second beam signal is 45±5°, the horizontal plane beam width of the third beam signal is 45±5°, and the horizontal plane beam width of the fourth beam signal is 30±5°. In addition, the gain value of each port 50 satisfies greater than 10dBi.

[0055] In some embodiments, the maximum difference in gain between the multiple beams does not exceed 1 dBi. This arrangement can ensure that the gain of each synthesized beam remains consistent, and the signal uniformity is high.

[0056] In one embodiment, the horizontal beam widths of the dual-polarized directional antenna units 20 are the same. The vertical beam widths of the dual-polarized directional antenna units 20 are the same. The operating frequencies of the dual-polarized directional antenna units 20 are the same.

[0057] Specifically, the horizontal plane beam width of the dual-polarization directional antenna unit 20 is 65±5°; the vertical plane beam width of the dual-polarization directional antenna unit 20 is 65±5°; and the operating frequency of the dual-polarization directional antenna unit 20 is 5150MHZ-5850MHZ.

[0058] By way of example, each dual-polarization directional antenna unit 20 has the same focal length as the Luneburg lens 10 .

[0059] The ability of Luneburg lens 10 to focus electromagnetic signals is similar to that of a magnifying glass, and the best focusing ability can only be achieved within a certain focal length range. Through a large amount of experimental data, it can be seen that according to different technical indicators, the focal length of the dual-polarized directional antenna unit 20 and the Luneburg lens 10 can be adjusted within the range of (0.1λ~0.2λ) mm to meet the requirements of gain and beam width. Among them, λ is the wavelength of the center frequency of the working frequency band of the dual-polarized directional antenna unit 20.

[0060] In some embodiments, the Luneburg lens 10 is an axisymmetric geometric body, including but not limited to a cylindrical or spherical shape.

[0061] For example, the Luneburg lens 10 may be prepared by a rolling method or a particle filling method.

[0062] For example, n dual-polarization directional antenna units 20 are arranged at equal intervals around the circumference of the Luneburg lens 10. In other words, the n dual-polarization directional antenna units 20 are evenly arranged. That is, the angle formed by two adjacent dual-polarization directional antenna units 20 about the center of the Luneburg lens 10 remains consistent. In this way, the beam width of each synthesized beam remains consistent, the gain size and the coverage area size remain consistent, and the signal uniformity is high. On the contrary, when the n dual-polarization directional antenna units 20 are arranged at non-equal intervals in a circle, the beam widths of each synthesized beam will be inconsistent, the coverage signals in different areas will be different, and the signal uniformity will be poor.

[0063] For example, the angle between the first dual-polarization directional antenna unit 20 and the nth dual-polarization directional antenna unit 20 with respect to the center of the Luneburg lens 10 is less than 180°. In this way, the Luneburg lens 10 is an axisymmetric geometric body, and when the angle is greater than 180°, the dual-polarization directional antenna unit 20 placed beyond 180° and the dual-polarization directional antenna unit 20 placed within 180° form an obstruction, so that the signal cannot be effectively radiated.

[0064] It should be noted that the angle formed by two adjacent dual-polarization directional antenna units 20 about the center of the Luneburg lens 10 refers to two straight lines obtained by connecting the centers of the two dual-polarization directional antenna units 20 with the center of the Luneburg lens 10 respectively, and the aforementioned angle is also the angle formed by the two straight lines.

[0065] The angle formed between two adjacent dual-polarization directional antenna units about the center of the Luneburg lens is θ, θ=180° / 2n to θ=180° / 1.5n, and optionally, θ is rounded to an integer.

[0066] In one embodiment, when n=3, the angle formed between two adjacent dual-polarization directional antenna units 20 about the center of the Luneburg lens 10 includes but is not limited to 30° to 40°, specifically, for example, 30°, 33°, 35°, 37° or 40°, etc. Thus, when the angle is set at this angle, it is known from the antenna radiation pattern that it is beneficial to reduce the blind area coverage and improve the signal uniformity.

[0067] In one embodiment, the present application further provides a communication device, the communication device comprising the multi-beam Luneburg lens antenna of any of the above embodiments.

[0068] It should be noted that the communication device in this embodiment includes but is not limited to a WiFi device and the like.

[0069] The above-mentioned communication equipment uses the Luneburg lens 10 to easily realize the multi-beam characteristics and focusing function, expand the horizontal coverage area of ​​the multi-beam Luneburg lens antenna in the communication equipment, and improve the gain of the built-in antenna of the communication equipment, thereby enhancing the signal coverage area and coverage capability, and effectively improving the user experience. In addition, the two adjacent first polarization feeders 21 are cross-combined, and the two adjacent second polarization feeders 22 are cross-combined to obtain multiple beams with different maximum beam directions and different horizontal beam widths, thereby meeting the multi-stream signal requirements of the coverage area. In addition, since the two first polarization feeders 21 of the same group adopt equal-amplitude in-phase feeding, and the two second polarization feeders 22 of the same group adopt equal-amplitude in-phase feeding, the use of equal-amplitude in-phase feeding can make the synthesized beam obtain the maximum gain effect, and at the same time make the graph of the synthesized beam symmetrical, and the signal strength distribution is more uniform in the application of indoor WiFi equipment.

[0070] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0071] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0073] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A multi-beam Luneburg lens antenna, characterized in that: The multi-beam Luneburg lens antenna comprises: Luneburg lens; n dual-polarization directional antenna units, the n dual-polarization directional antenna units are arranged in sequence around the circumference of the Luneburg lens, n≥3, each of the dual-polarization directional antenna units is provided with a first polarization feeding portion and a second polarization feeding portion, and the first polarization feeding portions of the n dual-polarization directional antenna units are numbered X1, X2, ..., X in the order of arrangement. n The second polarization feeding parts of the n dual-polarization directional antenna units are numbered as Y1, Y2, ..., Y in the order of arrangement. n ; When n is an odd number, the first polarization feeder numbered X1 is provided with one port, and the first polarization feeder numbered X2 to X3 is provided with one port. n The first polarization feeding parts of Y are grouped into a group with two adjacent first polarization feeding parts in the same group, and the two first polarization feeding parts of Y are fed with equal amplitude and same phase. n The second polarization feeder has a port numbered Y1 to Y n-1 The second polarization feeding parts are grouped into a group with every two adjacent second polarization feeding parts in the order of numbering, and the two second polarization feeding parts in the same group are fed with equal amplitude and in phase; When n is an even number, the first polarization feeder numbered X1 and the first polarization feeder numbered X n The first polarization feeder is provided with a port numbered X2 to X n-1 The first polarization feeding parts of the first polarization feeding parts are grouped into a group according to the numbering sequence, and the two first polarization feeding parts in the same group are fed with equal amplitude and in phase; n The second polarization feeding parts are grouped into a group with every two adjacent second polarization feeding parts in the order of numbering, and the two second polarization feeding parts in the same group are fed with equal amplitude and in phase; In which, the multi-beam Luneburg lens antenna also includes a first power divider and a second power divider; the two first polarization feeding parts in the same group are correspondingly provided with a port, and the two first polarization feeding parts in the same group are connected to the corresponding ports through the first power divider; the two second polarization feeding parts in the same group are correspondingly provided with a port, and the two second polarization feeding parts in the same group are connected to the corresponding ports through the second power divider.

2. The multi-beam Luneburg lens antenna according to claim 1, characterized in that: The first power divider and the second power divider are both one-to-two power dividers, and the amplitude ratio of the two output ports of the power divider is 1:1, and the phase difference is 0.

3. The multi-beam Luneburg lens antenna according to claim 1 or 2, characterized in that: The n dual-polarization directional antenna units are combined to obtain n+1 beams; the maximum beam directions of the n+1 beams are different from each other.

4. The multi-beam Luneburg lens antenna according to claim 1, characterized in that: The horizontal plane beam width of each dual-polarization directional antenna unit is the same; the vertical plane beam width of each dual-polarization directional antenna unit is the same; and the operating frequency of each dual-polarization directional antenna unit is the same.

5. The multi-beam Luneburg lens antenna according to claim 4, characterized in that: The horizontal plane beam width of the dual-polarization directional antenna unit is 65±5°; the vertical plane beam width of the dual-polarization directional antenna unit is 65±5°; and the operating frequency of the dual-polarization directional antenna unit is 5150MHZ-5850MHZ.

6. The multi-beam Luneburg lens antenna according to claim 1, characterized in that: The focal length of each dual-polarized directional antenna unit is the same as that of the Luneburg lens; the focal length of the dual-polarized directional antenna unit and the Luneburg lens is (0.1λ~0.2λ) mm, where λ is the wavelength of the center frequency point of the working frequency band of the dual-polarized directional antenna unit.

7. The multi-beam Luneburg lens antenna according to claim 1, characterized in that: The Luneburg lens is cylindrical or spherical.

8. The multi-beam Luneburg lens antenna according to claim 1, characterized in that: The n dual-polarization directional antenna units are arranged at equal intervals around the circumference of the Luneburg lens; the angle formed by the first dual-polarization directional antenna unit and the nth dual-polarization directional antenna unit about the center of the Luneburg lens is less than 180°.

9. The multi-beam Luneburg lens antenna according to claim 8, characterized in that: When there are n dual-polarization directional antenna units, the angle formed between two adjacent dual-polarization directional antenna units with respect to the center of the Luneburg lens is θ, θ=180° / 2n to θ=180° / 1.5n.

10. A communication device, characterized in that: The communication device comprises the multi-beam Luneburg lens antenna according to any one of claims 1 to 9.

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