Decoupling radiation unit, antenna device, antenna array and communication equipment

Abstract

The invention relates to a decoupling radiation unit, an antenna device, an antenna array and communication equipment, a resonant ring is a part of a radiation arm, and when interference electromagnetic waves irradiate the radiation arm, interference current on the resonant ring and interference current on a radiation main body can be offset; besides, a capacitor is formed between the resonant ring and the radiation main body, and the whole structure is an FSS structure, is similar to a band-pass filter and has a wave-transparent effect, so that the influence on the target frequency band radiation unit can be reduced, and meanwhile, the influence on the own circuit and the directional diagram performance can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile communications, and particularly to a decoupling radiation unit, an antenna device, an antenna array and a communication device. Background Art

[0002] With the rapid development of mobile communication technology, base station antennas, as key devices in wireless communication networks, are facing more and more challenges in their design. In an environment where multi-mode networks coexist, the demand for multi-band antennas is increasing day by day, and the requirements for antenna performance indicators are also increasing day by day. In a multi-band common-aperture antenna, the electromagnetic environment is complex. Due to its large size, the low-frequency radiation unit is likely to block the high-frequency radiation unit. When high-frequency electromagnetic waves irradiate on the low-frequency radiation unit, an induced current will be generated on the low-frequency radiation unit, and after secondary radiation, the scattered radiation pattern will be superimposed on the original radiation pattern, resulting in distortion of the intermediate-frequency or high-frequency radiation pattern.

[0003] In related technologies, the low-frequency radiation unit is usually designed as a radiation unit with a wave-transmitting effect, so as to reduce the influence on the intermediate-frequency or high-frequency radiation unit. However, the design of the wave-transmitting radiation unit is likely to affect its own circuit or radiation pattern performance, or the passband of the radiation unit is relatively narrow. Summary of the Invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a decoupling radiation unit, an antenna device, an antenna array and a communication device, which has a wave-transmitting effect, reduces the influence on the radiation unit of the target frequency band, and at the same time can reduce the influence on its own circuit and radiation pattern performance.

[0005] A decoupling radiation unit, the decoupling radiation unit includes a radiation arm, and the radiation arm includes:

[0006] A radiation main body, the radiation main body is arranged in a ring shape; and

[0007] A decoupling structure, the decoupling structure is electrically connected to the radiation main body, the decoupling structure is arranged as a closed resonant ring, or the decoupling structure and the radiation main body enclose a closed resonant ring.

[0008] In one embodiment, the decoupling structure is connected to the inner side of the radiation main body; and / or, the contour shape of the radiation main body is rectangular, circular, semi-circular, triangular, pentagonal, hexagonal or octagonal.

[0009] In one embodiment, the number of the resonant rings is one or more; and / or, the contour shape of the resonant ring is rectangular, circular, semi-circular, triangular, pentagonal, hexagonal or octagonal.

[0010] In one embodiment, the perimeter of the resonant loop is 0.25λ to 0.75λ, where λ is the wavelength of the center frequency point of the target frequency band.

[0011] In one embodiment, the radiation body includes a plurality of radiation single arms connected in sequence end to end; at least one of the decoupling structures is provided on each of the radiation single arms.

[0012] In one embodiment, at least two resonant loops are provided on each radiation single arm, and the perimeters of the respective resonant loops on each radiation single arm are different from each other, or the perimeters of the respective resonant loops on each radiation single arm are the same.

[0013] In one embodiment, the plane of the decoupling structure and the radiation surface of the radiation body are arranged on the same plane.

[0014] In one embodiment, the plane of the decoupling structure and the radiation surface of the radiation body are arranged at an angle.

[0015] In one embodiment, the radiation body includes a plurality of radiation single arms connected in sequence end to end; the radiation single arm includes a first line segment and a second line segment, the first line segment is connected to the second line segment, and the width of the first line segment is greater than the width of the second line segment.

[0016] In one embodiment, the decoupling radiation unit further includes a feeding balun; a feeding portion is provided on the radiation body, and the feeding portion is electrically connected to the feeding balun.

[0017] In one embodiment, the radiation arm and the feeding balun are integrally formed by die-casting process or sheet metal process; alternatively, the radiation arm is a PCB structure or a sheet metal structure, and the radiation arm is electrically connected to the feeding balun by welding or coupling.

[0018] An antenna device, the antenna device includes a first radiation unit, a second radiation unit and a reflector, the first radiation unit and the second radiation unit are mounted on the reflector; the first radiation unit is the decoupling radiation unit as described above, the operating frequency band of the first radiation unit is lower than the operating frequency band of the second radiation unit, and the first radiation unit can suppress the induced current of the second radiation unit.

[0019] In one embodiment, the antenna device further includes a third radiation unit, the third radiation unit is mounted on the reflector, the operating frequency band of the first radiation unit is lower than the operating frequency band of the third radiation unit, and the first radiation unit can suppress the induced current of the third radiation unit.

[0020] An antenna array, the antenna array includes the decoupled radiation unit described above, and / or the antenna device described above.

[0021] A communication device, the communication device includes the decoupled radiation unit described above, and / or the antenna device described above, and / or the antenna array described above.

[0022] For the above-mentioned decoupled radiation unit, antenna device, antenna array and communication device, the resonant ring is a part of the radiation arm. When the interfering electromagnetic wave irradiates on the radiation arm, the interfering current on the resonant ring can cancel the interfering current on the radiation main body; in addition, a capacitor is formed between the resonant ring and the radiation main body, and the overall structure is an FSS structure, similar to a band-pass filter, with a wave-transmitting effect, so as to reduce the influence on the radiation unit in the target frequency band, and at the same time reduce the influence on its own circuit and radiation pattern performance. Description of the Drawings

[0023] Figure 1 It is a structural diagram of the decoupled radiation unit according to an embodiment of the present application.

[0024] Figure 2 It is a structural diagram of the radiation arm according to the first embodiment of the present application.

[0025] Figure 3 It is a structural diagram of the decoupled radiation unit according to another embodiment of the present application.

[0026] Figure 4 It is a structural diagram of the radiation arm according to the second embodiment of the present application.

[0027] Figure 5 It is a structural diagram of the radiation arm according to the third embodiment of the present application.

[0028] Figure 6 It is a structural diagram of the radiation arm according to the fourth embodiment of the present application.

[0029] Figure 7 It is a structural diagram of the radiation arm according to the fifth embodiment of the present application.

[0030] Figure 8 It is a structural diagram of the radiation arm according to the sixth embodiment of the present application.

[0031] Figure 9 It is a structural diagram of the radiation arm according to the seventh embodiment of the present application.

[0032] Figure 10 It is a structural diagram of the radiation arm according to the eighth embodiment of the present application.

[0033] Figure 11 It is a structural diagram of the radiation arm according to the ninth embodiment of the present application.

[0034] Figure 12 is Figure 11Another perspective structural diagram of the radiation arm shown.

[0035] Figure 13 Structural diagram of the radiation arm of the tenth embodiment of the present application.

[0036] Figure 14 is Figure 13 Another perspective structural diagram of the radiation arm shown.

[0037] Figure 15 Structural diagram of the radiation arm of the eleventh embodiment of the present application.

[0038] Figure 16 Structural diagram of the decoupling radiation unit of an embodiment of the present application.

[0039] Figure 17 is Figure 16 Exploded structural diagram of the structure shown.

[0040] Figure 18 Structural diagram of the antenna device of an embodiment of the present application.

[0041] Figure 19 Based on Figure 2 Transmission coefficient simulation diagram of a specific frequency band of the radiation arm shown.

[0042] Figure 20 Based on Figure 15 Transmission coefficient simulation diagram of a specific frequency band of the radiation arm shown.

[0043] Figure 21 Based on Figure 7 Transmission coefficient simulation diagram of a specific frequency band of the radiation arm shown.

[0044] 10. Decoupling radiation unit; 11. Radiation arm; 111. Radiation main body; 1111. Radiation single arm; 1112. First line segment; 1113. Second line segment; 1114. Feeding part; 112. Decoupling structure; 12. Resonant ring; 13. Feeding balun; 14. Support frame; 20. Second radiation unit; 30. Reflector; 40. Third radiation unit; 50. Fixing member; 60. Feeding sheet. Detailed implementation manners

[0045] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand 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 departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0046] It should be noted that in this embodiment, FSS is an abbreviation for Frequency Selective Surface, and its Chinese translation is frequency selective surface.

[0047] Referring to Figure 1 in Figure 3 , a decoupling radiation unit 10 provided in an embodiment of the present application, the decoupling radiation unit 10 can be either a single-polarization radiation unit or a dual-polarization radiation unit. The decoupling radiation unit 10 includes a radiation arm 11. When the decoupling radiation unit 10 is a dual-polarization radiation unit, the radiation arm 11 is correspondingly provided with four, for example.

[0048] The radiation arm 11 includes a radiation main body 111 and a decoupling structure 112. The radiation main body 111 is arranged in a ring shape. The decoupling structure 112 is electrically connected to the radiation main body 111. Among them, the decoupling structure 112 can be independently set as a closed resonant ring 12, specifically as shown in any one of Figure 2 , Figure 4 , Figure 5 and Figures 8 to 10 . Of course, the decoupling structure 112 can also be enclosed with the radiation main body 111 to form a closed resonant ring 12, specifically as shown in Figure 6 or Figure 7 . The decoupling structure 112 is arranged in a curve, and the opposite ends of the decoupling structure 112 are respectively connected to the radiation main body 111.

[0049] For the above-mentioned decoupling radiation unit 10, the resonant ring 12 is a part of the radiation arm 11. When interfering electromagnetic waves irradiate on the radiation arm 11, the interfering current on the resonant ring 12 can cancel the interfering current on the radiation main body 111; in addition, a capacitor is formed between the resonant ring 12 and the radiation main body 111, and the overall structure is an FSS structure, similar to a band-pass filter, with a wave-passing effect, so as to reduce the influence on the radiation unit in the target frequency band, and at the same time reduce the influence on its own circuit and pattern performance. In addition, the radiation arm 11 has a band-pass effect in different frequency bands.

[0050] Exemplarily, the decoupling structure 112 is connected to the inner side of the radiation main body 111. In this way, the decoupling structure 112 is located within the annular region of the radiation main body 111, with a compact structure and small occupied space, which is beneficial to the miniaturization of the product.

[0051] Optionally, the decoupling structure 112 and the radiation main body 111 are an integrated structure, including but not limited to being obtained by injection molding in one piece, sheet metal process, die casting process or welding connection.

[0052] Exemplarily, the contour shape of the radiation body 111 includes, but is not limited to, a rectangle, a circle, a triangle, a pentagon, a hexagon, an octagon, or other regular shapes and irregular shapes, and can be flexibly adjusted and set according to actual requirements, which are not limited herein.

[0053] Exemplarily, the resonant loop 12 includes, but is not limited to, a rectangle, a circle, a semicircle, a triangle, a pentagon, a hexagon, an octagon, or other regular shapes and irregular shapes, and can be flexibly adjusted and set according to actual requirements, which are not limited herein.

[0054] Please refer to Figure 2 , when the decoupling structure 112 is independently set as a closed resonant loop 12, and each resonant loop 12 is set as a circle, on the one hand, the current direction on the resonant loop 12 is opposite to that on the coupling single arm 1111, and they will cancel each other out after vector superposition; on the other hand, the current directions between two adjacent resonant loops 12 are opposite, and they will cancel each other out after vector superposition. Furthermore, under the irradiation of the second radiation unit and the third radiation unit, the decoupling radiation unit has good band-pass characteristics, thereby reducing the influence of the low-frequency radiation unit on the high-frequency radiation unit.

[0055] Optionally, the number of the resonant loops 12 is the same as that of the decoupling structures 112, including, but not limited to, one or more. Multiple ones are, for example, 2, 3, 4, 6, 7, 8, 10, 12, or 16, etc., and can be flexibly adjusted and set according to actual requirements. When the number of the resonant loops 12 increases, the number of the decoupling structures 112 increases correspondingly, enabling the wave transmission effect to exist at more positions of the radiation body 111.

[0056] Exemplarily, when there are multiple resonant loops 12, the multiple resonant loops 12 are arranged at intervals in sequence along the circumferential direction of the resonant body, specifically, for example, arranged at equal intervals.

[0057] Exemplarily, when there are multiple resonant loops 12, the circumferences of each of the resonant loops 12 can either remain the same, as shown in Figure 15 , or be different from each other, as shown in Figure 10 or Figure 13 and Figure 14 . It can also be set in other forms, and can be flexibly adjusted and set according to actual requirements, which are not limited herein.

[0058] Among them, please refer to Figure 10 or Figure 13 and Figure 14 , when the circumferences of the resonant loops 12 are different, the multiple resonant loops 12 with different circumferences correspond to multiple target frequency bands with different frequency band sizes one by one, and can achieve wave transmission for the multiple target frequency bands, thereby improving the antenna performance index.

[0059] The perimeter of each resonant loop 12 can be flexibly adjusted and set according to actual requirements.

[0060] When adjusting the perimeter of the resonant loop 12, the inductance value of the resonant loop 12 can be correspondingly adjusted, and the capacitance value between adjacent resonant loops 12 can be adjusted, thereby changing the band-pass characteristics of the radiation arm 11. Exemplarily, the perimeter of the resonant loop 12 includes but is not limited to 0.25λ to 0.75λ, where λ is the wavelength of the center frequency point of the target frequency band. In this way, it has a good wave-transmitting effect, which can reduce the influence on the radiation unit in the target frequency band, and at the same time can reduce the influence on its own circuit and pattern performance.

[0061] It should be noted that the target frequency band in this embodiment refers to a frequency band higher than the operating frequency band of the decoupling radiation unit 10. Specifically, when the decoupling radiation unit 10 is a low-frequency band, the target frequency band includes but is not limited to a medium-frequency band or a high-frequency band, and the specific size can be adjusted and set according to actual requirements, which will not be limited here.

[0062] In one embodiment, the radiation main body 111 includes a plurality of radiation single arms 1111 connected end to end in sequence. Each radiation single arm 1111 is provided with at least one decoupling structure 112. In this way, each radiation single arm 1111 has a good wave-transmitting effect, and the performance of the antenna is improved.

[0063] In one embodiment, at least two resonant loops 12 are provided on each radiation single arm 1111, and the perimeters of the resonant loops 12 on each radiation single arm 1111 are different in size.

[0064] Please refer to Figure 10 or Figure 13 and Figure 14 , in a specific embodiment, the number of decoupling structures 112 provided on each radiation single arm 1111 is, for example, two, and the number of resonant loops 12 on each radiation single arm 1111 is correspondingly two. In addition, the perimeters of the two resonant loops 12 on each radiation single arm 1111 are different in size, so that the radiation arm 11 can have a double-wave-transmitting effect, and the decoupling radiation unit 10 can have a wide-band or dual-band wave-transmitting effect, which can meet the requirements of different multi-frequency common-aperture antennas.

[0065] Please refer to Figures 4 to 10 Any one of them. In one embodiment, the plane of the decoupling structure 112 and the radiation surface of the radiation main body 111 are arranged on the same plane. In this way, the decoupling structure 112 occupies less space and is convenient for integral processing and forming with the radiation main body 111.

[0066] In addition, when the plane of the decoupling structure 112 and the radiation surface of the radiation body 111 are arranged on the same plane, the decoupling structure 112 can be formed on the radiation body 111 by milling or stamping. After processing, there is no need to bend the decoupling structure 112, which improves the production efficiency.

[0067] Please refer to Figures 11 to 14 , in one embodiment, the plane of the decoupling structure 112 and the radiation surface of the radiation body 111 are arranged at an angle. In this way, compared with the case where the plane of the decoupling structure 112 and the radiation surface of the radiation body 111 are arranged on the same plane, arranging the plane of the decoupling structure 112 and the radiation surface of the radiation body 111 at an angle can reduce the space of the plane of the radiation arm 11, which is more conducive to layout when the loop is large.

[0068] Among them, the included angle between the plane of the decoupling structure 112 and the radiation surface of the radiation body 111 includes but is not limited to 30°, 45°, 60°, 90°, 120°, 160°, etc.

[0069] Please refer to again Figure 1 , in one embodiment, the radiation body 111 includes a plurality of radiation single arms 1111 connected end to end in sequence. The radiation single arm 1111 includes a first line segment 1112 and a second line segment 1113 connected in sequence along its extending direction. The width of the first line segment 1112 is greater than the width of the second line segment 1113. In this way, the first line segment 1112 and the second line segment 1113 are connected and combined into a matching stub, which can not only be used for radiating signals, but also adjust the impedance of the decoupling radiation unit 10 by adjusting the respective line widths and lengths of the first line segment 1112 and the second line segment 1113, so as to achieve better matching performance.

[0070] Optionally, each radiation single arm 1111 is provided with a first line segment 1112 and a second line segment 1113 connected to each other. In this way, the impedance matching of each radiation single arm 1111 can be adjusted.

[0071] Please refer to Figure 16 and Figure 17 , in one embodiment, the decoupling radiation unit 10 further includes a feeding balun 13. The radiation body 111 is provided with a feeding part 1114, and the feeding part 1114 is directly electrically connected or coupled to the feeding balun 13, and the feeding part 1114 and the feeding balun 13 are fixed together by means of rivets or buckles, etc.

[0072] Please refer to Figure 16 and Figure 17 , on the basis of the foregoing embodiment, the radiation arm 11 and the feeding balun 13 are integrally formed by die-casting process or sheet metal process; or, the radiation arm 11 is set as a PCB structure or a sheet metal structure, and the radiation arm 11 is electrically connected to the feeding balun 13 by welding or coupling.

[0073] On the basis of the foregoing embodiments, the radiation arm 11 is, for example, a sheet metal part, and is fixed to the insulating support frame 14 by means of snap fasteners, rivets or hot riveting. Please refer to Figure 3 , Figure 13 and Figure 14 . Four resonance rings 12 are provided on each radiation arm 11 for canceling high-frequency induced current and reducing the influence on the high-frequency antenna.

[0074] Optionally, the radiation arm 11 is not limited to being rectangular, and can also be optimized by means of chamfering, etc. The specific shape is as shown in Figure 9 , so as to improve the matching of the antenna. A coupling part is also provided on the radiation arm 11. The coupling part is coupled to the coupling part of the feed balun 13, and the two are fixed together by fasteners such as rivets or snap fasteners.

[0075] Please refer to Figure 16 and Figure 17 . The feed balun 13 of the radiation element is of a die-cast structure or a PCB structure. In this embodiment, it is of a die-cast structure, and a feed piece 60 is arranged inside it. The feed piece 60 is fixed in the balun by a fixing piece 50.

[0076] Please refer to Figure 18 . Another embodiment of the present application provides an antenna device. The antenna device includes a first radiation element, a second radiation element 20 and a reflector 30. The first radiation element and the second radiation element 20 are mounted on the reflector 30. The first radiation element is specifically a decoupling radiation element 10. The first radiation element can suppress the induced current of the second radiation element 20.

[0077] Specifically, the operating frequency band of the first radiation element is lower than that of the second radiation element 20. For example, the first radiation element is a low-frequency radiation element, and the second radiation element 20 is a high-frequency radiation element.

[0078] Optionally, the decoupling radiation element 10 is a low-frequency radiation element, and the second radiation element 20 is a high-frequency radiation element. The decoupling radiation element 10 has a wave-transmitting effect at high frequencies, thereby reducing the influence of the decoupling radiation element 10 on the high-frequency radiation element and avoiding the pattern distortion or circuit performance deterioration of the high-frequency radiation element caused by the shielding of the low-frequency radiation element.

[0079] In the above antenna device, the resonance ring 12 is a part of the radiation arm 11. When interfering electromagnetic waves irradiate on the radiation arm 11, the interfering current on the resonance ring 12 can cancel the interfering current on the radiation main body 111; in addition, a capacitance is formed between the resonance ring 12 and the radiation main body 111. The overall structure is an FSS structure, similar to a band-pass filter, and has a wave-transmitting function, so as to reduce the influence on the radiation element in the target frequency band and at the same time reduce the influence on its own circuit and pattern performance.

[0080] Please refer to Figure 18 , in one embodiment, the antenna device further includes a third radiation unit 40. The third radiation unit 40 is mounted on the reflector 30, and the operating frequency band of the third radiation unit 40 is higher than that of the first radiation unit. The first radiation unit can suppress the induced current of the third radiation unit 40. In addition, the operating frequency band of the third radiation unit 40 is less than that of the second radiation unit 20. Thus, the size of the first radiation unit is larger than that of the second radiation unit 20 and larger than that of the third radiation unit 40. Furthermore, since the first radiation unit will block the second radiation unit 20 and the third radiation unit 40, it will affect the antenna performance of the second radiation unit 20 and the third radiation unit 40. When the electromagnetic signals of the third radiation unit 40 and the second radiation unit 20 pass through the first radiation unit, interference currents will be generated on the first radiation unit. In this application, since the first radiation unit is the decoupling radiation unit 10 in the above embodiment, it can achieve that the interference current coupled by the resonant ring 12 and the interference current coupled by the radiation main body 111 can cancel each other out, achieving the purpose of canceling the interference current, thereby reducing the radiation of the antenna to the interference current.

[0081] It should be noted that the antenna device provided in the embodiment of this application is only an example. Among them, the structures of the first radiation unit and the second radiation unit 20 can be the same or different. For example, the first radiation unit and the second radiation unit 20 can both be die-cast antennas; or, the first radiation unit is a die-cast antenna and the second radiation unit 20 is a dielectric antenna; or, the first radiation unit is a dual-band antenna and the second radiation unit 20 is a single-band antenna, etc. The embodiment of this application does not limit this.

[0082] The size of the first radiation unit is larger than that of the second radiation unit 20, and the size of the first radiation unit is also larger than that of the third radiation unit 40. Therefore, the first radiation unit will block the second radiation unit 20 and the third radiation unit 40, thereby affecting the antenna performance of the second radiation unit 20 and the third radiation unit 40. Therefore, in this application, the first radiation unit is set as a wave-transmitting radiation unit, which has a scattering suppression effect on the second radiation unit 20 and the third radiation unit 40 and can reduce the influence on these two frequency bands.

[0083] In a multi-band antenna, the second radiation unit 20 and the third radiation unit 40 will generate high-frequency induced currents on the first radiation unit, and the radiation field generated by the induced currents will cause the circuit or pattern performance of the second radiation unit 20 and the third radiation unit 40 to deteriorate. As Figure 3 shown, by setting a circular ring on the radiation arm 11, the directions of the induced currents on the radiation arm 11 and the circular ring are different, and after vector superposition, they will cancel each other out, so that it has good band-pass characteristics in both the second radiation unit 20 and the third radiation unit 40, thereby reducing the influence of the low-frequency radiation unit on the high-frequency radiation unit.

[0084] Another embodiment of the present application provides an antenna array, which includes the decoupling radiation unit 10 of any one of the above embodiments and / or the antenna device of any one of the above embodiments.

[0085] In the above antenna array, the resonant ring 12 is a part of the radiation arm 11. When the interfering electromagnetic wave irradiates on the radiation arm 11, the interfering current on the resonant ring 12 can cancel out the interfering current on the radiation main body 111. In addition, a capacitor is formed between the resonant ring 12 and the radiation main body 111. The overall structure is an FSS structure, similar to a band-pass filter, with a wave-passing effect, so as to reduce the influence on the radiation unit in the target frequency band and at the same time reduce the influence on its own circuit and radiation pattern performance.

[0086] Another embodiment of the present application provides a communication device, which includes the decoupling radiation unit 10 of any one of the above embodiments and / or the antenna device of any one of the above embodiments and / or the antenna array of any one of the above embodiments.

[0087] In the above communication device, the resonant ring 12 is a part of the radiation arm 11. When the interfering electromagnetic wave irradiates on the radiation arm 11, the interfering current on the resonant ring 12 can cancel out the interfering current on the radiation main body 111. In addition, a capacitor is formed between the resonant ring 12 and the radiation main body 111. The overall structure is an FSS structure, similar to a band-pass filter, with a wave-passing effect, so as to reduce the influence on the radiation unit in the target frequency band and at the same time reduce the influence on its own circuit and radiation pattern performance.

[0088] Please refer to Figure 2 and Figure 19 , Figure 19 which is Figure 2 the simulation diagram of the transmission coefficient of a specific frequency band based on the radiation arm shown. It can be seen from Figure 19 that there is a band-pass effect in the range of 1.7 GHz to 2.7 GHz, and the band-pass frequency band is, for example, 1.64 GHz to 2.88 GHz.

[0089] Please refer to Figure 15 and Figure 20 , Figure 20 which is Figure 15 the simulation diagram of the transmission coefficient of a specific frequency band based on the radiation arm shown. It can be seen from Figure 20 that when two resonant rings 12 are provided for each radiation single arm 1111, there is a double-band-pass effect. Specifically, as shown in Figure 20 , the two band-pass frequency bands are 1.45 GHz to 2.1 GHz and 2.9 GHz to 3.6 GHz respectively.

[0090] Please refer to Figure 7 and Figure 21 , Figure 21is based on Figure 7 the simulation diagram of the transmission coefficient of a specific frequency band of the radiation arm shown in Figure 21 It can be seen that there is a passband effect in the range of 2 GHz to 3.6 GHz, and the band-pass frequency band is, for example, 2 GHz to 3.6 GHz.

[0091] In the description of this application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing this application and simplifying the description, rather than indicating or implying 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 to this application.

[0092] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0093] In this application, unless otherwise clearly specified and limited, if there are terms such as "install", "connect", "join", "fix", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0094] In this application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "above" or "below" a second feature, etc., the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0095] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0096] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0097] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application shall be subject to the appended claims.

Claims

1. A decoupling radiation unit, characterized in that: The decoupling radiation unit comprises a radiation arm, and the radiation arm comprises: a radiation body, wherein the radiation body is arranged in a ring shape; and A decoupling structure, wherein the decoupling structure is electrically connected to the radiating body, the decoupling structure is configured as a closed resonant ring, or the decoupling structure and the radiating body are enclosed to form a closed resonant ring.

2. The decoupling radiation unit according to claim 1, characterized in that: The decoupling structure is connected to the inner side of the radiating body; and / or the outline of the radiating body is rectangular, circular, semicircular, triangular, pentagonal, hexagonal or octagonal.

3. The decoupling radiation unit according to claim 1, characterized in that: The number of the resonant rings is one or more; and / or the outline shape of the resonant ring is rectangular, circular, semicircular, triangular, pentagonal, hexagonal or octagonal.

4. The decoupling radiation unit according to claim 1, characterized in that: The circumference of the resonant ring is 0.25λ~0.75λ, and λ is the wavelength of the center frequency point of the target frequency band.

5. The decoupling radiation unit according to claim 1, characterized in that: The radiation body comprises a plurality of radiation arms connected end to end in sequence; each of the radiation arms is provided with at least one decoupling structure.

6. The decoupling radiation unit according to claim 5, characterized in that: There are at least two resonant rings on each of the radiation arms, and the circumferences of the resonant rings on each of the radiation arms are different from each other, or the circumferences of the resonant rings on each of the radiation arms are the same.

7. The decoupling radiation unit according to claim 1, characterized in that: The plane of the decoupling structure and the radiation surface of the radiation body are arranged on the same plane.

8. The decoupling radiation unit according to claim 1, characterized in that: The plane of the decoupling structure is arranged at an angle to the radiation surface of the radiation body.

9. The decoupling radiation unit according to claim 1, characterized in that: The radiation body includes a plurality of radiation arms connected end to end in sequence; the radiation arm includes a first line segment and a second line segment, the first line segment is connected to the second line segment, and the width of the first line segment is greater than the width of the second line segment.

10. The decoupling radiation unit according to claim 1, characterized in that: The decoupling radiation unit further includes a feeding balun; the radiation body is provided with a feeding part, and the feeding part is electrically connected to the feeding balun.

11. The decoupling radiation unit according to claim 10, characterized in that: The radiation arm and the feeding balun are integrally formed by a die-casting process or a sheet metal process; or, the radiation arm is set to a PCB structure or a sheet metal structure, and the radiation arm is electrically connected to the feeding balun by welding or coupling.

12. An antenna device, characterized in that: The antenna device includes a first radiation unit, a second radiation unit and a reflection plate, and the first radiation unit and the second radiation unit are installed on the reflection plate; the first radiation unit is a decoupling radiation unit as described in any one of claims 1 to 11, the operating frequency band of the first radiation unit is lower than the operating frequency band of the second radiation unit, and the first radiation unit can suppress the induced current of the second radiation unit.

13. The antenna device according to claim 12, characterized in that: The antenna device also includes a third radiation unit, which is installed on the reflection plate. The working frequency band of the first radiation unit is lower than the working frequency band of the third radiation unit, and the first radiation unit can suppress the induced current of the third radiation unit.

14. An antenna array, characterized in that: The antenna array comprises the decoupling radiation unit according to any one of claims 1 to 11, and / or the antenna device according to claim 11 or 12.

15. A communication device, characterized in that: The communication device comprises the decoupling radiation unit according to any one of claims 1 to 11, and / or the antenna device according to claim 12 or 13, and / or the antenna array according to claim 14.

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