Antenna structure and wireless terminal access equipment

Abstract

The utility model provides an antenna structure and a wireless terminal access device. The antenna structure comprises a radiation layer, one side surface of the radiation layer is provided with a plurality of butterfly-shaped radiation structures, and each butterfly-shaped radiation structure comprises at least four radiation units; the feed layer is arranged on the side, away from the butterfly-shaped radiation structure, of the radiation layer, and the feed layer is provided with a plurality of feed ports; and the plurality of coupled feed parts are in one-to-one correspondence with the plurality of butterfly-shaped radiation structures, and the coupled feed parts are vertically arranged between the radiation layer and the feed layer. According to the utility model, the problem that the antenna structure in the prior art cannot give consideration to both wide working frequency band and light weight at the same time is solved.

Description

Technical Field

[0001] This utility model relates to the field of antenna equipment technology, and more specifically, to an antenna structure and a wireless terminal access device. Background Technology

[0002] In mobile communications, fifth-generation (5G) mobile communication is characterized by high speed, low latency, and massive connectivity. More and more 5G communication applications are being used in daily life, such as 5G mobile phones, autonomous driving, smart homes, smart cities, and smart transportation. Therefore, the demand from networks to mobile terminals is becoming increasingly urgent, leading to the development of 5G routers, 5G CPEs (Customer Premise Equipment), and 5G base stations. As users' requirements for antennas gradually increase, antenna structures need to be small in size, lightweight, and stable in performance, while also requiring a wide operating frequency band. However, existing antenna structures cannot achieve both a wide operating frequency band and lightweight design.

[0003] In other words, existing antenna structures cannot simultaneously achieve both a wide operating frequency band and lightweight design. Utility Model Content

[0004] The main objective of this invention is to provide an antenna structure and a wireless terminal access device to solve the problem that existing antenna structures cannot simultaneously achieve both wide operating frequency bands and lightweight design.

[0005] To achieve the above objectives, according to one aspect of the present invention, an antenna structure is provided, comprising: a radiating layer having a plurality of butterfly-shaped radiating structures on one side surface of the radiating layer, each butterfly-shaped radiating structure including at least four radiating elements; a feeding layer disposed on the side of the radiating layer away from the butterfly-shaped radiating structures, the feeding layer having a plurality of feeding ports; and a plurality of coupled feeding sections corresponding one-to-one with the plurality of butterfly-shaped radiating structures, the coupled feeding sections being erected between the radiating layer and the feeding layer.

[0006] Furthermore, the coupling feed section includes: a dielectric section, which is erected between the radiation layer and the feed layer, and a portion of the dielectric section passes through the radiation layer; multiple radiation units in each butterfly radiation structure are arranged circumferentially around the corresponding dielectric section; and a coupling feed line, which is disposed on the side wall of the dielectric section, and is arranged at intervals with the butterfly radiation structure and is signal connected; and the feed port is electrically connected to the coupling feed line.

[0007] Furthermore, the butterfly-shaped radiating structure includes four radiating units, the medium part is a cross-shaped plate structure, and each radiating unit has a clearance notch on the side facing the medium part, with the four wing plates of the cross-shaped plate structure located in the corresponding clearance notches.

[0008] Furthermore, the dielectric section includes two first dielectric substrates, one of which has a mounting groove in the middle, and the two first dielectric substrates are arranged crosswise to form a cross-shaped plate structure. At least one coupling feed line is provided on one side surface of each first dielectric substrate, and the coupling feed lines located on different first dielectric substrates are spaced apart.

[0009] Furthermore, the dielectric section also includes a shielding layer disposed on the side of the first dielectric substrate away from the coupling feed line.

[0010] Furthermore, each coupled feed line includes at least one first coupled feed line and at least one second coupled feed line, wherein the signal transmitted in the first coupled feed line has a phase difference with the signal transmitted in the second coupled feed line.

[0011] Furthermore, each coupled feed section is electrically connected to at least two feed ports, and the signals of the at least two feed ports electrically connected to the same coupled feed section have different phases.

[0012] Further, the feed layer includes: a second dielectric substrate, with the feed port located on the side of the second dielectric substrate away from the radiation layer; a plurality of feed sections, each feed section corresponding to a plurality of feed ports, the feed sections being disposed on the side of the second dielectric substrate facing the radiation layer, each feed section being connected to at least one coupling feed wire; and a plurality of feed probes, the feed probes being disposed on the second dielectric substrate, the feed ports being electrically connected to the corresponding feed sections through the feed probes.

[0013] Furthermore, the power supply section includes at least one power supply branch, each power supply branch being connected to a coupling power supply line.

[0014] Furthermore, when multiple butterfly-shaped radiating structures are arranged in an N*M array, the number of feed ports is 2N, and the feed section has M feed branches.

[0015] Furthermore, the antenna structure satisfies at least one of the following: the thickness of the second dielectric substrate is greater than or equal to 0.8 mm and less than or equal to 1.2 mm; the length of the second dielectric substrate is greater than or equal to 140 mm and less than or equal to 180 mm; the width of the second dielectric substrate is greater than or equal to 100 mm and less than or equal to 140 mm.

[0016] Furthermore, the antenna structure satisfies at least one of the following: the radiating layer has a first mounting hole in the middle, the feed layer has a second mounting hole coaxially arranged with the first mounting hole, and the first mounting hole and the second mounting hole are elongated holes; the thickness of the radiating layer is greater than or equal to 0.8 mm and less than or equal to 1.2 mm; the length of the radiating layer is greater than or equal to 140 mm and less than or equal to 180 mm; the width of the radiating layer is greater than or equal to 100 mm and less than or equal to 140 mm; the resonant frequency of the antenna structure is greater than or equal to 3300 MHz and less than or equal to 5000 MHz.

[0017] According to another aspect of the present invention, a wireless terminal access device is provided, including the antenna structure described above.

[0018] The antenna structure using the technical solution of this utility model includes a radiating layer, a feeding layer, and multiple coupled feeding sections. One side surface of the radiating layer has multiple butterfly-shaped radiating structures, each butterfly-shaped radiating structure including at least four radiating elements. The feeding layer is disposed on the side of the radiating layer away from the butterfly-shaped radiating structures, and the feeding layer has multiple feeding ports. The multiple coupled feeding sections correspond one-to-one with the multiple butterfly-shaped radiating structures, and the coupled feeding sections are positioned between the radiating layer and the feeding layer.

[0019] By configuring a radiating layer, a feeding layer, and multiple coupling feed units, with the coupling feed units positioned between the radiating layer and the feeding layer and electrically connected to the feeding layer, signals from the feeding layer are transmitted to the coupling feed units, which then couple the signals into the radiating layer. Multiple butterfly-shaped radiating structures, each containing at least four radiating elements, are arranged on one side surface of the radiating layer. This arrangement facilitates dual-polarized radiation, enabling the antenna structure to simultaneously transmit and receive signals in both the vertical and horizontal directions, enhancing its receiving capability and transmission efficiency. Furthermore, the presence of multiple butterfly-shaped radiating structures, each containing multiple radiating elements, increases the antenna's radiating area and array density, significantly improving gain and providing better directional radiation characteristics. The coupling feed method between the coupling feed units and the butterfly radiating structures provides wider bandwidth coverage, allowing the antenna structure to operate over a wider frequency band. Meanwhile, multiple coupled feed sections are spaced apart at the corresponding positions of the butterfly-shaped radiating structure, rather than forming a single dielectric layer between the radiating layer and the feed layer. This helps reduce the weight of the antenna structure and achieve lightweight design. The antenna structure in this application achieves lightweight design while widening its operating frequency band. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the antenna structure of an optional embodiment of the present invention is shown; and

[0022] Figure 2 It shows Figure 1 Top view of the antenna structure;

[0023] Figure 3 It shows Figure 1 A side view of the antenna structure from one angle.

[0024] The above figures include the following reference numerals:

[0025] 10. Radiation layer; 11. First mounting hole; 12. Limiting hole; 20. Butterfly-shaped radiation structure; 21. Radiation unit; 211. Clearance notch; 30. Feed layer; 31. Feed port; 32. Second dielectric substrate; 321. Metal hole; 33. Feed section; 331. Feed branch line; 34. Feed probe; 35. Second mounting hole; 36. First metal layer; 37. Second metal layer; 38. First screw hole; 39. Second screw hole; 40. Coupled feed section; 41. Dielectric section; 411. First dielectric substrate; 412. Connecting lug; 42. Coupled feed line. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] To address the problem that existing antenna structures cannot simultaneously achieve both wide operating frequency bands and lightweight design, this invention provides an antenna structure and a wireless terminal access device.

[0030] like Figures 1 to 3As shown, the antenna structure includes a radiating layer 10, a feeding layer 30, and multiple coupled feeding sections 40. One side surface of the radiating layer 10 has multiple butterfly-shaped radiating structures 20, each butterfly-shaped radiating structure 20 including at least four radiating elements 21. The feeding layer 30 is disposed on the side of the radiating layer 10 away from the butterfly-shaped radiating structures 20, and the feeding layer 30 has multiple feeding ports 31. The multiple coupled feeding sections 40 correspond one-to-one with the multiple butterfly-shaped radiating structures 20, and the coupled feeding sections 40 are erected between the radiating layer 10 and the feeding layer 30.

[0031] By configuring a radiating layer 10, a feeding layer 30, and multiple coupling feed sections 40, with the coupling feed sections 40 positioned between the radiating layer 10 and the feeding layer 30 and electrically connected to the feeding layer 30, signals in the feeding layer 30 are transmitted to the coupling feed sections 40, which then couple the signals into the radiating layer 10. Multiple butterfly-shaped radiating structures 20 are arranged on one side surface of the radiating layer 10, each containing at least four radiating elements 21. This arrangement facilitates dual-polarized radiation of the radiating layer 10, enabling the antenna structure to simultaneously transmit and receive signals in both the vertical and horizontal directions, thus enhancing the antenna's receiving capability and transmission efficiency. Furthermore, the presence of multiple butterfly-shaped radiating structures 20 on the radiating layer 10, each containing multiple radiating elements 21, increases the antenna's radiating area and array density, significantly improving the antenna's gain and providing better directional radiation characteristics. The coupled feed section 40 and the butterfly radiating structure 20 employ a coupled feeding method, which provides wider bandwidth coverage, enabling the antenna structure to operate over a wider frequency band. Furthermore, the multiple coupled feed sections 40 are spaced apart at their respective positions on the butterfly radiating structure 20, rather than forming a single dielectric layer between the radiating layer 10 and the feed layer 30. This helps reduce the weight of the antenna structure, achieving a lightweight design. The antenna structure in this application achieves both a wider operating frequency band and a lighter weight.

[0032] In some alternative embodiments, please refer to Figure 3 The coupling feed section 40 includes a dielectric section 41 and a coupling feed line 42. The dielectric section 41 is erected between the radiating layer 10 and the feed layer 30, and a portion of the dielectric section 41 extends through the radiating layer 10. Multiple radiating units 21 within each butterfly-shaped radiating structure 20 are arranged circumferentially around the corresponding dielectric section 41. The coupling feed line 42 is disposed on the side wall of the dielectric section 41, and is spaced apart from the butterfly-shaped radiating structure 20 and signal-connected. The feed port 31 is electrically connected to the coupling feed line 42. By configuring the coupling feed section 40 as a dielectric section 41 and a coupling feed line 42, the dielectric section 41 can provide a mounting position for the coupling feed line 42, facilitating signal transmission between the coupling feed line 42 and the butterfly-shaped radiating structure 20 via coupling feed, while also ensuring the stability of the signal transmitted by the coupling feed line 42.

[0033] In some alternative embodiments, please refer to Figure 1 and Figure 2 The butterfly-shaped radiating structure 20 includes four radiating units 21. The dielectric part 41 is a cross-shaped plate structure, and each radiating unit 21 has a clearance notch 211 on the side facing the dielectric part 41. The four wings of the cross-shaped plate structure are respectively located within the corresponding clearance notches 211. Positioning the four wings of the cross-shaped plate structure within the clearance notches 211 of the radiating units 21 facilitates the vertical stacking of the radiating units 21 and the dielectric part 41, ensures alignment between the radiating units 21 and the coupling feed line 42, and improves the accuracy and stability of the coupling feed. Furthermore, the clearance notch 211 not only improves the stability of the connection between the dielectric part 41 and the radiating layer 10 but also optimizes the electromagnetic field coupling path. In the design of the coupling feed, the coupling efficiency between the coupling feed line 42 and the radiating units 21 is affected by their relative positions. By setting the clearance notch 211, the coupling efficiency between the coupling feed line 42 and the radiating units 21 is optimized, ensuring efficient and uniform signal transmission to the radiating units 21.

[0034] Furthermore, the butterfly-shaped radiating structure 20 itself can achieve dual-polarized radiation. Simultaneously, the cross-shaped plate structure works in conjunction with the four radiating elements 21 of the butterfly-shaped radiating structure 20 to optimize radiation performance in both the vertical and horizontal directions. This results in excellent signal reception and transmission capabilities in both directions, further enhancing the antenna structure's gain. The compact layout of the butterfly-shaped radiating structure 20 and the cross-shaped plate structure reduces the overall size of the antenna structure, facilitating the integration of more antenna elements within a limited space. This is particularly important for communication devices requiring miniaturization, such as 5G CPEs. Miniaturization not only saves device space but also improves the device's portability and aesthetics.

[0035] In some alternative embodiments, please refer to Figures 1 to 3The dielectric section 41 includes two first dielectric substrates 411. One of the first dielectric substrates 411 has a mounting groove in its center. The two first dielectric substrates 411 are arranged intersectingly to form a cross-shaped plate structure. At least one coupling feed line 42 is provided on one side surface of each first dielectric substrate 411. The coupling feed lines 42 located on different first dielectric substrates 411 are spaced apart. By using two first dielectric substrates 411 to form a cross-shaped structure through intersecting arrangement, the area occupied by the dielectric section 41 can be reduced while maintaining the antenna structure performance, which is beneficial for achieving a lightweight antenna structure. In addition, the two intersecting first dielectric substrates 411 form a stable cross-shaped plate structure. This structure not only ensures the structural stability of the dielectric section 41, but also ensures the overall rigidity of the antenna structure, reduces the impact of the external environment on the antenna performance, and ensures the stability and reliability of the antenna structure under various operating conditions.

[0036] In some optional embodiments, the dielectric section 41 further includes a shielding layer disposed on the side of the first dielectric substrate 411 facing away from the coupling feed line 42. By providing a shielding layer on the first dielectric substrate 411, electromagnetic waves that are not desired to be transmitted to the corresponding radiating element 21 can be effectively blocked, reducing signal interference between different feed paths or radiating elements 21. In dual-polarized antennas, vertically polarized and horizontally polarized signals need to be well isolated to avoid polarization aliasing. The presence of the shielding layer can reduce the mutual influence of signals in the two polarization directions, thereby improving the overall performance of the antenna. The shielding layer can reduce the omnidirectional leakage of electromagnetic energy, especially reducing the radiation of the signal from the coupling feed line 42 to the external environment. This not only helps to improve the efficiency of signal transmission but also reduces the signal loss inside the antenna structure, ensuring the stable operation of the antenna structure in a wide frequency band. In wireless communication environments, especially in the 5G band, there is interference from various wireless signals. The shielding layer can provide additional protection for the antenna structure, reduce the impact of external electromagnetic interference on antenna performance, and ensure that the antenna structure can maintain good signal reception and transmission capabilities even in complex electromagnetic environments. Shielding helps concentrate the energy output and reception of an antenna structure, improving its directivity by reducing unwanted lateral electromagnetic radiation. This is especially critical in communication applications requiring high gain and narrow beamwidth, such as 5G CPE devices, enabling longer-range communication and clearer signal quality.

[0037] In some alternative embodiments, the shielding layer is a metal layer.

[0038] In some alternative embodiments, please refer to Figure 3 The two ends of the first dielectric substrate 411 are respectively disposed on the radiation dielectric substrate and the second dielectric substrate 32 of the radiation layer 10, and the first dielectric substrate 411 is welded to the radiation dielectric substrate and the second dielectric substrate 32 of the radiation layer 10.

[0039] The first dielectric substrate 411 has two connecting lugs 412 at opposite ends, and the connecting lugs 412 pass through the radiation layer 10 or the second dielectric substrate 32.

[0040] In some optional embodiments, each coupled feed line 42 includes at least one first coupled feed line and at least one second coupled feed line, wherein the signal transmitted in the first coupled feed line has a phase difference with the signal transmitted in the second coupled feed line. The presence of this phase difference ensures that the first and second coupled feed lines can independently provide energy to the radiating elements in both vertical and horizontal polarization directions. This independent feeding method avoids interference between the two polarization directions, improves antenna isolation, and ensures the antenna's performance when simultaneously receiving and transmitting vertically and horizontally polarized signals. The phase difference design helps to broaden the operating bandwidth of the antenna structure. In some cases, controlling the phase difference can allow the antenna to maintain good matching over a wider frequency range, reducing signal attenuation and distortion, thereby covering the 3300MHz-5000MHz frequency band and meeting the frequency band requirements of 5G communication.

[0041] In some alternative embodiments, the four radiating elements 21 include two pairs of radiating element structures, with two radiating elements 21 in each radiating element structure located diagonally, and a first coupled electron feed line used to feed one pair of radiating element structures, while a second coupled electron feed line used to feed the other pair of radiating element structures.

[0042] In some alternative embodiments, please refer to Figure 1 and Figure 2 Each coupled feed section 40 is electrically connected to at least two feed ports 31, and the signals of the at least two feed ports 31 electrically connected to the same coupled feed section 40 have different phases. By controlling the phase difference between the signals of different feed ports 31 electrically connected to the same coupled feed section 40, the dual-polarization radiation characteristics of the antenna can be achieved. In a dual-polarization antenna, vertically polarized and horizontally polarized signals typically require a certain phase difference to ensure that they can radiate independently and simultaneously. The introduction of this phase difference allows the antenna to process signals from two mutually orthogonal polarization directions simultaneously, improving the stability of wireless communication and data transmission capability. By coupling signals with a phase difference to the same butterfly-shaped radiating structure 20, the radiation pattern of the antenna can be optimized, improving signal coverage and quality. In 5G communication, a specific phase difference can cause the antenna's radiation field to form specific radiation patterns in the vertical and horizontal directions. This not only helps in the directional propagation of signals and reduces signal loss in space, but also increases the antenna gain and improves receiving sensitivity, thereby maintaining good communication performance in complex environments. Signals with different phases can reduce mutual interference between different feed paths.

[0043] In some alternative embodiments, please refer to Figure 1 The feed layer 30 includes a second dielectric substrate 32, a plurality of feed portions 33 and a plurality of feed probes 34. The feed port 31 is located on the side of the second dielectric substrate 32 away from the radiation layer 10. The plurality of feed portions 33 correspond one-to-one with the plurality of feed ports 31. The feed portions 33 are disposed on the side of the second dielectric substrate 32 facing the radiation layer 10. Each feed portion 33 is connected to at least one coupling feed line 42. The feed probes 34 are disposed on the second dielectric substrate 32. The feed ports 31 are electrically connected to the corresponding feed portions 33 through the feed probes 34. The design of the feed probe 34 allows the feed port 31 to be directly connected to the feed section 33, reducing the propagation distance and path loss of the signal in the feed path and improving the efficiency of signal transmission. By setting multiple feed sections 33 corresponding to multiple feed ports 31 one by one, independent feeding of multiple signals can be achieved. The feed port 31 is located on the side of the second dielectric substrate 32 away from the radiating layer 10, while the feed section 33 is located on the side of the second dielectric substrate 32 facing the radiating layer 10 and is connected to the coupling feed line 42. This layout can optimize the internal structure of the antenna, avoid signal interference, and maintain the purity of the signal.

[0044] In some alternative embodiments, please refer to Figure 1 The feed layer 30 further includes a first metal layer 36 and a second metal layer 37. The first metal layer 36 is disposed on the side of the second dielectric substrate 32 away from the radiating layer 10, and the second metal layer 37 is disposed on the side of the second dielectric substrate 32 facing the radiating layer 10. The first metal layer 36 has a plurality of first metal vias that avoid the feed ports 31, and the second metal layer 37 has a plurality of second metal vias that avoid the feed portions 33. The second dielectric substrate 32 has a plurality of metal holes 321, and the first metal layer 36 and the second metal layer 37 are connected through the metal holes 321.

[0045] In some alternative embodiments, both the first metal layer 36 and the second metal layer 37 are grounded, and the first metal layer 36 and the second metal layer can serve to shield signals.

[0046] In some alternative embodiments, the feed layer 30 has a plurality of first screw holes 38 penetrating the first metal layer 36, the second dielectric substrate 32, and the second metal layer 37, the first screw holes 38 being used for fixed connection with other structures. The radiating layer 10 has a plurality of limiting holes 12 communicating with the sidewalls of the radiating layer 10, and the orthographic projection of the first screw holes 38 on the radiating layer 10 is located within the limiting holes 12, so as to facilitate the fixed connection of the feed layer 30 with other structures.

[0047] In some alternative embodiments, the power supply layer 30 has a plurality of second screw holes 39 penetrating the first metal layer 36, the second dielectric substrate 32, and the second metal layer 37. The second screw holes 39 are used for fixed connection with other structures. The second screw holes 39 are holes that are both circular and rectangular, or in other words, the second screw holes 39 are elongated holes with rounded ends.

[0048] In some alternative embodiments, the thickness of the radiating layer 10 is greater than or equal to 0.8 mm and less than or equal to 1.2 mm, so as to ensure the structural strength of the radiating layer 10 while facilitating the thinning of the antenna structure.

[0049] In some optional embodiments, the length of the radiating layer 10 is greater than or equal to 140 mm and less than or equal to 180 mm, and the width of the radiating layer 10 is greater than or equal to 100 mm and less than or equal to 140 mm. This ensures the structural strength of the radiating layer 10 while facilitating a thinner antenna structure. Preferably, the length and width of the radiating layer 10 are 160*119 mm.

[0050] In some alternative embodiments, the thickness of the second dielectric substrate 32 is greater than or equal to 0.8 mm and less than or equal to 1.2 mm, so as to ensure the structural strength of the second dielectric substrate 32 while facilitating the thinning of the antenna structure.

[0051] In some optional embodiments, the length of the second dielectric substrate 32 is greater than or equal to 140 mm and less than or equal to 180 mm, and the width of the second dielectric substrate 32 is greater than or equal to 100 mm and less than or equal to 140 mm. This ensures the structural strength of the second dielectric substrate 32 while facilitating the reduction of the antenna structure's thickness. Preferably, the length and width of the second dielectric substrate 32 are 160*119 mm.

[0052] In some alternative embodiments, please refer to Figure 1 and Figure 2 The power supply section 33 includes at least one power supply branch line 331, and each power supply branch line 331 is connected to a coupling power supply line 42. By providing at least one power supply branch line 331 in the power supply section 33, the same power supply section 33 can simultaneously supply power to multiple butterfly-shaped radiating structures 20, which helps to reduce the number of power supply ports 31 while ensuring the performance of the butterfly-shaped radiating structure 20.

[0053] In some optional embodiments, when multiple butterfly radiating structures 20 are arranged in an N*M array, the number of feed ports 31 is 2N, and the feed section 33 has M feed branches 331. This arrangement reduces the number of feed ports 31 while ensuring that each butterfly radiating structure 20 can receive a signal input. Each butterfly radiating structure 20 can be considered to have two feed ports 31, one for vertical polarization and the other for horizontal polarization. This ensures uniform signal distribution, allowing each butterfly radiating structure 20 to receive optimal signal excitation, thereby improving the antenna's radiation efficiency and signal quality. Furthermore, the 2N feed ports 31 and M feed branches 331 simplify the complexity of the feed network, reducing transmission loss and phase distortion in the signal path, lowering design and manufacturing difficulty, and contributing to improved overall antenna performance and reliability. For example, in some optional embodiments, four feed ports 31 and four feed sections 33 are used, each feed section 33 having three feed branches 331, forming a one-to-three feed network.

[0054] In some alternative embodiments, the radiating layer 10 has a first mounting hole 11 in the middle, and the feeding layer 30 has a second mounting hole 35 coaxially arranged with the first mounting hole 11. Both the first mounting hole 11 and the second mounting hole 35 are elongated holes. The arrangement of the first mounting hole 11 and the second mounting hole 35 facilitates the positioning and fixation of the antenna structure with other structures. The elongated design of the first mounting hole 11 and the second mounting hole 35 facilitates assembly with fasteners. Compared to circular holes or small rectangular holes, elongated holes can accommodate a wider range of fastener sizes, which can be screws or pins.

[0055] In some alternative embodiments, the length of the first mounting hole 11 is greater than or equal to 60 mm and less than or equal to 80 mm. The width of the first mounting hole 11 is greater than or equal to 6 mm and less than or equal to 16 mm. Preferably, the length and width of the first mounting hole 11 are 70.6 * 11 mm.

[0056] In some alternative embodiments, the length of the second mounting hole 35 is greater than or equal to 60 mm and less than or equal to 80 mm. The width of the second mounting hole 35 is greater than or equal to 6 mm and less than or equal to 16 mm. Preferably, the length and width of the second mounting hole 35 are 70.6 * 11 mm.

[0057] In some alternative embodiments, the resonant frequency of the antenna structure is greater than or equal to 3300MHz and less than or equal to 5000MHz, ensuring that the antenna structure can more effectively support the N77, N78, and N79 frequency bands in 5G communication, increasing the antenna's flexibility and adaptability. The use of high-frequency bands (3300MHz to 5000MHz), especially for 5G networks, can improve communication distance and penetration. This configuration ensures the antenna structure is compatible with 5G communication systems, provides broadband performance, supports dual-polarized communication, enhances communication stability, distance, and penetration, adapts to high-density network environments, reduces interference, and thus improves the overall communication experience for users on 5G CPE devices. The antenna gain can reach 1.9-8.9dBi in the 3300MHz to 5000MHz frequency band.

[0058] In some alternative embodiments, the present invention also provides a wireless terminal access device, which includes the antenna structure described above. The wireless terminal access device with the antenna structure described above can support the N77, N78, and N79 frequency bands in 5G communication.

[0059] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An antenna structure, characterized in that, include: A radiation layer (10) has a plurality of butterfly-shaped radiation structures (20) on one side surface, each of the butterfly-shaped radiation structures (20) including at least four radiation units (21); A feeding layer (30) is disposed on the side of the radiation layer (10) away from the butterfly radiation structure (20), and the feeding layer (30) has a plurality of feeding ports (31); Multiple coupling feed sections (40) are provided, each of which corresponds to one of the multiple butterfly-shaped radiation structures (20), and the coupling feed sections (40) are positioned between the radiation layer (10) and the feed layer (30).

2. The antenna structure according to claim 1, characterized in that, The coupling feed unit (40) includes: The dielectric section (41) is disposed between the radiation layer (10) and the feed layer (30), and a portion of the dielectric section (41) passes through the radiation layer (10). A plurality of radiation units (21) in each butterfly radiation structure (20) are arranged circumferentially around the corresponding dielectric section (41). A coupling feed line (42) is disposed on the side wall of the dielectric part (41), and the coupling feed line (42) is spaced apart from the butterfly radiation structure (20) and signal connected. The feed port (31) is electrically connected to the coupling feed line (42).

3. The antenna structure according to claim 2, characterized in that, The butterfly-shaped radiation structure (20) includes four radiation units (21), the medium part (41) is a cross-shaped plate structure, and each radiation unit (21) has a clearance notch (211) on one side facing the medium part (41), and the four plate wings of the cross-shaped plate structure are respectively located in the corresponding clearance notch (211).

4. The antenna structure according to claim 3, characterized in that, The dielectric section (41) includes two first dielectric substrates (411). One of the first dielectric substrates (411) has a mounting groove in the middle. The two first dielectric substrates (411) are arranged crosswise to form the cross-shaped plate structure. At least one coupling feed line (42) is provided on one side surface of each first dielectric substrate (411). The coupling feed lines (42) located on different first dielectric substrates (411) are spaced apart.

5. The antenna structure according to claim 4, characterized in that, The dielectric section (41) further includes a shielding layer disposed on the side of the first dielectric substrate (411) away from the coupling feed line (42).

6. The antenna structure according to claim 2, characterized in that, Each of the coupled feed lines (42) includes at least one first coupled feed line and at least one second coupled feed line, wherein the signal transmitted in the first coupled feed line has a phase difference with the signal transmitted in the second coupled feed line.

7. The antenna structure according to claim 1, characterized in that, Each of the coupling feed sections (40) is electrically connected to at least two feed ports (31), and the signals of the at least two feed ports (31) electrically connected to the same coupling feed section (40) have different phases.

8. The antenna structure according to any one of claims 2 to 6, characterized in that, The feed layer (30) includes: The second dielectric substrate (32) has the power supply port (31) located on the side of the second dielectric substrate (32) away from the radiating layer (10); Multiple power supply sections (33) are provided, each power supply section (33) corresponds to a multiple power supply port (31), the power supply section (33) is disposed on the side of the second dielectric substrate (32) facing the radiation layer (10), and each power supply section (33) is connected to at least one of the coupling power supply lines (42). Multiple power supply probes (34) are disposed on the second dielectric substrate (32), and the power supply port (31) is electrically connected to the corresponding power supply part (33) through the power supply probes (34).

9. The antenna structure according to claim 8, characterized in that, The power supply section (33) includes at least one power supply branch (331), each of the power supply branches (331) being connected to one of the coupling power supply lines (42).

10. The antenna structure according to claim 9, characterized in that, When multiple butterfly-shaped radiation structures (20) are arranged in an N*M array, the number of feed ports (31) is 2N, and the feed section (33) has M feed branches (331).

11. The antenna structure according to claim 8, characterized in that, The antenna structure satisfies at least one of the following: The thickness of the second dielectric substrate (32) is greater than or equal to 0.8 mm and less than or equal to 1.2 mm; The length of the second dielectric substrate (32) is greater than or equal to 140 mm and less than or equal to 180 mm; The width of the second dielectric substrate (32) is greater than or equal to 100 mm and less than or equal to 140 mm.

12. The antenna structure according to any one of claims 1 to 7, characterized in that, The antenna structure satisfies at least one of the following: The radiation layer (10) has a first mounting hole (11) in the middle, and the power feeding layer (30) has a second mounting hole (35) coaxially arranged with the first mounting hole (11). The first mounting hole (11) and the second mounting hole (35) are elongated holes. The thickness of the radiation layer (10) is greater than or equal to 0.8 mm and less than or equal to 1.2 mm; The length of the radiation layer (10) is greater than or equal to 140 mm and less than or equal to 180 mm; The width of the radiation layer (10) is greater than or equal to 100 mm and less than or equal to 140 mm; The resonant frequency of the antenna structure is greater than or equal to 3300MHz and less than or equal to 5000MHz.

13. A wireless terminal access device, characterized in that, The antenna structure includes any one of claims 1 to 12.

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