CPE array antenna

Abstract

The utility model provides a CPE array antenna, and belongs to the field of antenna structures. The CPE array antenna comprises four groups of antennas, the four groups of antennas form an annular antenna array, each group of antennas comprises two antennas with identical structures, the first group of antennas comprises a first antenna and a second antenna, the first antenna and the second antenna are arranged in parallel and opposite to each other, and the first antenna and the second antenna are arranged in parallel and opposite to each other. And the second group of antennas to the fourth group of antennas are symmetrically arranged on the two sides of a medial plane by taking the longitudinal vertical center line of the first antenna and the second antenna as the medial plane. The beneficial effects of the utility model are that the structure is compact, the mutual influence among the antennas is small, and the isolation and performance of the antennas are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of antenna structures, in particular to a CPE array antenna. Background Art

[0002] CPE, short for Customer Premises Equipment, refers to equipment located at the end-user's premises, typically providing telephones or other services. Common examples include telephones, cable TV set-top boxes, and Digital Subscriber Line (DSL) routers. Due to communication requirements, CPE devices often include multiple antennas. Since these antennas are primarily designed on printed circuit boards (PCBs), to prevent interference between them, they are typically positioned as far apart as possible within the CPE structure, or isolation structures are employed to improve isolation. However, this structure results in the antennas taking up a large space and increasing costs. Utility Model Content

[0003] To solve the problems in the prior art, the present invention provides a CPE array antenna, which is designed as a ring-shaped antenna array. Each antenna is evenly arranged on the ring, making its structure more compact, which is conducive to product miniaturization and reducing product costs.

[0004] The utility model CPE array antenna includes four groups of antennas, which form a ring-shaped antenna array. Each group of antennas includes two antennas with identical structures. The first group of antennas includes a first antenna and a second antenna. The first and second antennas are arranged parallel to each other, with the longitudinal perpendicular center line between the first and second antennas as the central axis. The second to fourth groups of antennas are symmetrically arranged on both sides of the central axis.

[0005] Furthermore, the second group of antennas, the third group of antennas, and the fourth group of antennas are arranged in staggered layers and are not in the same plane, and the extension lines of the second group of antennas, the third group of antennas, and the fourth group of antennas do not intersect with the plane where the first group of antennas are located.

[0006] Furthermore, it also includes an annular fixing structure, on which mounting positions corresponding to the antennas are respectively provided, and four groups of eight antennas are respectively fixed on the corresponding mounting positions.

[0007] Furthermore, the installation position is an installation slot, and one end of the eight antennas is respectively inserted into the installation slot and fixed.

[0008] Furthermore, the first group of antennas is a 5G antenna, including a symmetrically arranged 5G main antenna and a 5G diversity antenna, the second group of antennas is a 5G MIMO antenna, the third group of antennas is a 2.4G / 5.8G WIFI antenna, and the fourth group of antennas is a 4G antenna, including a 4G main antenna and a 4G diversity antenna, and the 2.4G / 5.8G WIFI antenna is arranged between the 5G MIMO antenna and the 4G antenna.

[0009] Furthermore, the 5G antenna includes a first antenna PCB board, a circuit structure arranged on the front of the first antenna PCB board, the circuit structure including a bandwidth control ring, an antenna vibrator upper arm and an antenna vibrator lower arm arranged on the periphery of the bandwidth control ring, the bandwidth control ring is arranged at one end of the first antenna PCB board, and the bandwidth control ring is provided with a dividing gap toward the other end of the first antenna PCB board, the antenna vibrator upper arm and the antenna vibrator lower arm are respectively arranged on both sides of the dividing gap, the antenna vibrator upper arm is provided with a first feeding point and a groove near the dividing gap and the bandwidth control ring, the antenna vibrator lower arm is provided with a protrusion passing through the dividing gap and extending into the groove, and the protrusion is provided with a first feeding point.

[0010] Furthermore, the width of the dividing gap gradually increases toward the other end of the antenna PCB board, and an antenna frequency control block is provided at the end of the first antenna PCB board and at a set distance from the end of the lower arm of the antenna vibrator. The antenna frequency control block is connected to the lower arm of the antenna vibrator.

[0011] Furthermore, the 5G MIMO antenna includes a 5G MIMO3 antenna and a 5G MIMO4 antenna with the same structure. The 5G MIMO3 antenna includes a second antenna PCB board. The second antenna PCB board is provided with a first radiating element and a second radiating element. A first feeding point is provided in the middle of the first radiating element. Two extension arms are provided at the end of the first radiating element away from the second radiating element. A first coupling channel is provided near the middle of the second radiating element. The feeding point is set at the bottom of the first coupling channel. The second radiating element is provided with an end extending to the first coupling channel. The end is provided with a second feeding point. The second radiating element is also provided with several radiating extension ends. The radiating extension ends can be coupled with the extension arms of the first radiating element to form a coupling frequency of 3 to 5 GHz. The frequencies controlled by the first radiating element and the second radiating element are superimposed on each other, and the operating frequency is set between 2000 and 5500 MHz.

[0012] Furthermore, the 2.4G / 5.8G WIFI antenna includes a third antenna PCB board, and a circuit structure is provided at one end of the front side of the third antenna PCB board. The circuit structure includes an extended ground structure and an antenna frequency control structure connected to the extended ground structure, wherein a coupling gap is provided between the extended ground structure and the antenna frequency control structure, and a third feeding point and a third feeding point are provided on both sides of the coupling gap respectively. The extended ground structure includes a ground structure and an extended ground extending toward the other end of the third antenna PCB board, and a gap is provided in the middle of the extended ground and the ground structure, which are connected to each other and connected to the coupling gap.

[0013] Furthermore, the 4G antenna includes a fourth antenna PCB board, on which a low-frequency radiation element, a high-frequency radiation element, and a coupled radiation element are provided, wherein a bandwidth extension unit is provided between the low-frequency radiation element and the coupled radiation element, a second coupling channel is provided in the middle of the coupled radiation element, a fourth feeding point is provided at the bottom of the second coupling channel, one end of the high-frequency radiation element extends into the second coupling channel, and a fourth feeding point corresponding to the fourth feeding point is provided at the front end, the coupled radiation elements are symmetrically distributed on the front and back sides of the fourth antenna PCB board, and a number of conductive holes that connect the front and back sides of the fourth antenna PCB board are evenly provided on the coupled radiation element.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: the present invention designs four groups of antennas into a ring-shaped antenna array, and each antenna is evenly arranged on the side wall of the ring, making its structure more compact, which is conducive to the miniaturization of the product and reducing product costs. The antennas are integrated into one through a fixed structure and separated from the CPE equipment, which is conducive to the assembly of the product and improves the assembly efficiency of the product.

[0015] The array antenna of this utility model can improve the signal isolation between antennas in a limited space through its unique layout. The symmetrical design of the dual antennas effectively improves the signal strength and various performance indicators of the antennas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 and Figure 2 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 3This is a schematic diagram of the arrangement positions of the antennas in one embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the 5G antenna structure;

[0020] Figure 5 This is a schematic diagram of the 5G MIMO antenna structure;

[0021] Figure 6 This is a schematic diagram of the 2.4G / 5.8G WIFI antenna structure;

[0022] Figure 7 and Figure 8 This is a schematic diagram of the 4G antenna structure;

[0023] Figures 9-16 The graphs are for the test results of each antenna performance. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The terms "including" and "having" and any variations thereof in the specification and claims of this utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this utility model or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figures 1 to 3As shown, the CPE array antenna of the present invention includes a total of four groups of antennas, namely the first group of antennas consisting of antenna 1 and antenna 5, the second group of antennas consisting of antenna 2 and antenna 6, the third group of antennas consisting of antenna 3 and antenna 7, and the fourth group of antennas consisting of antenna 4 and antenna 8. In this example, the four groups of antennas form a circular antenna array, and each group of antennas includes two antennas with exactly the same structure. In this example, antenna 1 and antenna 5 of the first group of antennas are parallel, and the front faces of the antennas are arranged relative to each other. Then, in this example, the longitudinal vertical center line of the antenna 1 and antenna 5 is used as the central axis plane, and the second to fourth groups of antennas are vertically symmetrically arranged on both sides of the central axis plane.

[0028] Preferably, the second, third, and fourth antenna groups in this example are arranged in staggered layers that are not in the same plane, and the second, third, and fourth antenna groups do not intersect with the extension of the plane in which the first antenna group is located. The three antenna groups in this example can be arranged in a stepped manner, moving away from the central axis plane in sequence, or they can be arranged with the third antenna group in the middle being farthest away and the second and fourth antenna groups on both sides being closer.

[0029] As an embodiment of the present invention, the four groups of antennas in this example are all fixed on the annular fixing structure 9 through their ends. The annular fixing structure 9 is provided with mounting positions 901 respectively arranged corresponding to the antennas. A total of eight antennas in four groups are respectively fixed on the corresponding mounting positions 901. Preferably, the mounting positions 901 in this example are mounting slots similar to those of computer graphics cards. One ends of the eight antennas are respectively inserted into the mounting slots and fixed. The installation method is simple and convenient, and the positioning effect is good.

[0030] In this example, baffles or shells may be provided around the eight antennas below the annular fixing structure 9 to form a complete whole. A mounting structure may also be provided on the shell to achieve quick connection with the CPE device.

[0031] Of course, the installation structure of this example is not limited to the annular fixing structure 9. The installation position can also be set on the shell, or directly fixed by screws to achieve the effect of the present invention.

[0032] As a preferred embodiment of the present invention, the eight antenna circuit boards in this example are made of PCB-FR4 material, which is stable, will not deform or bend, and is easy to assemble. During assembly, buckle positions are reserved directly on the shell material, and the PCB board can be directly buckled in the specified position without falling off.

[0033] As the third embodiment of the present invention, before being installed on the CPE device, each antenna is independent and not a whole. In this example, a mounting structure can be arranged on the CPE device. During installation, each antenna can be directly fixed in the setting position according to the mounting position of the mounting structure, which can also achieve the technical effect of the present invention.

[0034] This example uses four groups of eight antennas, placed symmetrically in pairs, to form a circular antenna array. Each group of symmetrical antennas shares the same path and operating frequency, and adjacent antennas are spaced a certain distance apart to ensure adequate isolation and prevent mutual interference. This creates a more compact structure, contributing to product miniaturization and cost reduction. The fixed structure integrates the antennas, separating them from the CPE equipment, facilitating and improving product assembly efficiency.

[0035] Due to the rapid development of 5G networks, 5G antennas are increasingly used in CPEs. The antenna array in this example is also a 5G antenna array. Specifically, the first group of antennas in this example is a 5G antenna, including a symmetrically arranged 5G main antenna and a 5G diversity antenna. The second group of antennas is a 5G MIMO antenna. The third group of antennas is a 2.4G / 5.8G WiFi antenna. The fourth group of antennas is a 4G antenna, including a 4G main antenna and a 4G diversity antenna. The 2.4G / 5.8G WiFi antenna is arranged between the 5G MIMO antenna and the 4G antenna.

[0036] In this example, the 5G MAIN and DIV antennas are symmetrically placed, with a distance of 79mm between them. This distance is significantly greater than a quarter wavelength, so the interference between them is minimal. The main interference from the 5G MAIN / DIV antennas comes from the 5G MIMO antennas in the same frequency band. To reduce this interference and improve isolation and antenna performance, this example optimizes the following three aspects:

[0037] 1. Place the 5G antenna and the 5G MIMO antenna at a 90-degree angle. Based on antenna principles and radiation patterns, placing the two antennas at a 90-degree angle is optimal (the radiation pattern is shaped like an apple, with no signal at the poles). The strongest antenna faces the weakest antenna, and the two antennas form a spherical shape.

[0038] 2. Optimize the structure of the two antenna groups so that the lines constructed on the two antenna groups are placed one above the other. The 5G MAIN / DIV antenna path is placed on the top, and the 5G MIMO antenna path is placed on the bottom. There is no intersection in the horizontal direction of the entire structure, which minimizes interference between the two groups.

[0039] 3. The distance between the two antennas meets the minimum requirement of λ / 4 (calculated at 5 GHz, λ / 4=15 mm). The present invention sets the distance between the two antennas to be no less than 15 mm.

[0040] In this example, the 4G MAIN and 4G DIV antennas are symmetrically placed, with a distance of 80.6mm between them. This distance is exactly λ / 4 of the low-frequency band, which improves isolation and antenna gain. The superposition of the two antennas multiplies the gain. The operating frequencies of the adjacent antennas (the 2.4G / 5.8G Wi-Fi antenna and the 5G MAIN / DIV antenna) are staggered and spaced apart, minimizing their mutual impact.

[0041] The 5G MIMO3 and 5G MIMO4 antennas are placed symmetrically, with a distance of 60mm between them. This distance is significantly greater than a quarter wavelength, so the interference between them is minimal. Interference with 5G MIMO antennas primarily comes from adjacent antennas. Interference with 5G MIMO antennas and their solutions have been described above. The focus is on resolving interference with 2.4G and 5G Wi-Fi antennas.

[0042] Due to the compactness of the layout, the distance between each antenna is minimized as much as possible so that they are evenly distributed on the ring. The distance between the 5G MIMO antenna and the 2.4 / 5.8G WiFi antenna is 9.4mm, which is not enough. Therefore, the utility model staggers the paths of these two groups of antennas in the upper and lower positions, that is, increases the distance between them in the vertical projection direction. In addition, the circuit boards of each antenna are arranged in parallel to minimize the directional interference of each other's signals as much as possible, thereby improving their isolation and performance.

[0043] The 2.4 / 5.8GHz WiFi antennas are placed symmetrically with a distance of 78mm between them, which is much greater than 1 / 4 wavelength. Therefore, the impact between them is minimal.

[0044] The specific structure of each antenna is exemplified below. It should be understood that the main innovation of the present invention lies in the arrangement of the antenna array. Antennas of other structures can be arranged according to the present invention to achieve the present invention in a limited space. Improved isolation capability and performance effects.

[0045] like Figure 4As shown, the 5G antenna of this example is a single-sided design, including a first antenna PCB board, and a circuit structure arranged on the front side of the first antenna PCB board. The circuit structure includes a bandwidth control ring 101, an antenna vibrator upper arm 102 and an antenna vibrator lower arm 103 arranged on the periphery of the bandwidth control ring 101, the bandwidth control ring 101 is arranged at one end of the first antenna PCB board, and the bandwidth control ring is provided with a dividing gap 107 toward the other end of the first antenna PCB board. The antenna vibrator upper arm 102 and the antenna vibrator lower arm 103 are respectively arranged on both sides of the dividing gap 107, and the antenna vibrator upper arm 102 is provided with a first feeding point 105 and a groove near the dividing gap 107 and the bandwidth control ring 101. The antenna vibrator lower arm 103 is provided with a protrusion that passes through the dividing gap 107 and extends into the groove, and the protrusion is provided with a first feeding point 106.

[0046] In this example, the length and width of the outer ring of the bandwidth control loop 101 are equivalent to loading an inductor on the antenna, and the size of the blank space inside the bandwidth control loop 101 is equivalent to loading a capacitor on the antenna. The combination of the two forms an "LC" circuit to control the bandwidth of the antenna.

[0047] Preferably, in this example, the width of the dividing gap gradually increases toward 107 toward the other end of the antenna PCB board. An antenna frequency control block 104 is also provided at the end of the first antenna PCB board and at a set distance from the end of the lower arm 103 of the antenna vibrator. The antenna frequency control block 104 is connected to the lower arm 103 of the antenna vibrator, and a blank block 108 is provided at the end of the upper arm 102 of the antenna vibrator at a certain distance from the antenna frequency control block 104.

[0048] In order to achieve wide bandwidth operation, the 5G antenna of the present invention can hardly meet the requirements by simply adjusting the bandwidth control loop 101 and the antenna frequency control block 4. The present invention optimizes the structure of the antenna vibrator upper arm 102 and the antenna vibrator lower arm 103, and sets a blank block 108, which plays a vital role in the coupling of the present invention. It can achieve more convenient and fast coupling under wide bandwidth, effectively reduce the size of the first antenna PCB board, and make the bandwidth of the present invention reach 3.5GHz when the operating frequency is in the range of 2000~5500MHz.

[0049] like Figure 5As shown, the 5G MIMO antenna in this example includes a 5G MIMO3 antenna and a 5G MIMO4 antenna with the same structure. The MIMO3 antenna includes a second antenna PCB board, on which a first radiating element 201 and a second radiating element 202 are provided. A first feeding point 203 is provided in the middle of the first radiating element 201, and the end of the first radiating element 201 away from the second radiating element 202 is provided with two extension arms 2011 and 2012 extending horizontally toward the second antenna PCB board. A first coupling channel is provided near the middle of the second radiating element 202, and the feeding point 203 is provided at the bottom of the first coupling channel. The second radiating element 202 is provided with an end extending to the first coupling channel, and the end is provided with a second feeding point 204. The second radiating element 202 is also provided with four radiating extension ends 2021 and 2022, wherein the radiating extension end 2021 is provided close to the first radiating element 201 and is perpendicular to the extension arms 2011 and 2012. There are three radiating extension ends 2022, which extend in opposite directions of the extension arms respectively. Among them, the middle radiation extension end is on the same line with the second feeding point 204, and the other two radiation extension ends are arranged on both sides of the middle radiation extension end, and the length is set according to the coupling effect. In this example, through a specific structural setting, it can be coupled with the extension arms 2011 and 2012 of the first radiation vibrator 201 to form a coupling frequency of 3 to 5 GHz. The frequencies controlled by the first radiation vibrator 201 and the second radiation vibrator 202 are superimposed on each other, and the operating frequency is set between 2000 and 5500 MHz.

[0050] The two extension arms 2011 and 2012 of the present invention effectively increase the length of the antenna, while the radiating extension ends 2021 and 2022 of the present invention are used to change the wavelength of the antenna and control the operating frequency. Since the 5G MIMO antenna and the 5G antenna have the same operating frequency, if the paths are designed to be the same or similar, the two are relatively close together, and the directional patterns are the same, they will interfere with each other and have poor isolation. Therefore, the present invention uses structural design to make the structures of the two sets of antennas completely different. The 5G MIMO antenna is arranged at one end of the second PCB board, and the line path does not intersect with the antenna path of the 5G antenna in the cross section, thus being arranged vertically. This significantly differs in the paths and directional patterns, thereby reducing mutual interference between the antennas, improving their isolation, and enhancing the overall performance of the antennas.

[0051] like Figure 6As shown, the 2.4G / 5.8G WIFI antenna of this example operates in two frequency bands, namely: 2400-2500MHz and 5000-5900MHz. The 2.4G / 5.8G WIFI antenna of the utility model includes a third antenna PCB board. A circuit structure is provided at one end of the front side of the third antenna PCB board. The circuit structure includes an extended ground structure 301 and an antenna frequency control structure 302 connected to the extended ground structure 301. The antenna frequency control structure 302 is arranged in a door shape, and the extended ground structure 301 is arranged inside the antenna frequency control structure 302. A coupling gap 306 is provided between the extended ground structure 301 and the antenna frequency control structure 302, and a third feeding point 305 and a third feeding point 304 are provided on both sides of the coupling gap 306, respectively.

[0052] Preferably, the extended ground structure 301 of this embodiment, in addition to comprising a semi-enclosed ground structure disposed inside the antenna frequency control structure 302, also includes an extended ground 303 extending toward the other end of the third antenna PCB board. The extended ground is connected to the inner sidewall of the antenna frequency control structure 302. A gap 307 is provided between the extended ground 303 and the ground structure, interconnected and connected to the coupling gap 306. By controlling gap 307, the present invention can control the antenna bandwidth. By setting the coupling gap, the antenna frequency can be coupled between 5000 and 5900 MHz. This high frequency and short wavelength place high demands on the gap width and length. By configuring the semi-enclosed structure, the present invention can reduce the difficulty of setting the coupling gap 306.

[0053] like Figure 7 and Figure 8 As shown, the 4G antenna in this example includes a fourth antenna PCB board with a double-sided line design, on which a low-frequency radiation element 401, a high-frequency radiation element 403, and a coupled radiation element 404 are provided. A bandwidth extension unit 402 is provided between the low-frequency radiation element 401 and the coupled radiation element 404. A second coupling channel is provided in the middle of the coupled radiation element 404, and a fourth feeding point 407 is provided at the bottom of the second coupling channel. One end of the high-frequency radiation element 403 extends into the second coupling channel, and a fourth feeding point 408 corresponding to the fourth feeding point 407 is provided at the front end. The coupled radiation elements 404 are symmetrically distributed on the front and back surfaces of the fourth antenna PCB board. On the back surface of the fourth antenna PCB board, two ground structures 409 and 410 with the same structure as the front surface of the fourth antenna PCB board are also included. Eight conductive holes 405 that connect the front and back surfaces of the fourth antenna PCB board are also evenly provided on the coupled radiation element 404.

[0054] The operating frequency of the low-frequency radiation vibrator 401 of the present invention is 700-960MHz. The middle serpentine bandwidth extension unit 402, through the combination of length and gap, is equivalent to loading a set of "LC" circuits between the front and back of the low frequency, which has the function of widening the low-frequency bandwidth and controlling the frequency point, so that it can work within the specified frequency. The operating frequency of the high-frequency radiation vibrator 403 in this example is 1700-2200MHz. Its length controls the frequency band, and the gap and shape between the vibrators around it control the bandwidth. The coupling radiation vibrator 404 set on the front and back sides can increase the length of the ground (the antenna must be referenced to the ground, and the length of the reference ground is λ / 4), which can improve the performance of the antenna. The 8 conductive holes 405 connect the line paths on the front and back sides to each other to form a whole.

[0055] Experimental verification

[0056] The CPE array antenna of this utility model was installed on the CPE device. A 3D passive efficiency test was conducted using a darkroom and a 5701B network analyzer to measure the gain and efficiency of each antenna. The superior performance of this utility model was demonstrated through antenna gain. Antenna gain is the ratio of the power density of the signal generated by an actual antenna to that of an ideal radiating element at the same point in space, given equal input power. It quantitatively describes the degree to which an antenna concentrates input power and measures its ability to transmit and receive signals in a specific direction. It is one of the most important parameters for selecting base station antennas.

[0057] like Figure 9 and Figure 10 As shown, the operating frequency of the 5G antenna of the present invention is 2000~5500MHz. The present invention selects the lowest frequency and the highest frequency band for testing. The test results show that the gain of the present invention is in the range of 0~3db in the frequency band of 2000~2700MHz, and in the high frequency band of 3300~5000MHz, the gain is in the range of -1.00~6db.

[0058] like Figure 11-12 As shown, the operating frequency of the 5G MIMO antenna of the present invention is also 2000~5500MHz. The present invention selects the lowest frequency and the highest frequency band for testing. The test results show that the gain of the present invention is in the range of 0.5~4.2db in the frequency band of 2000~2700MHz, and in the high frequency band of 3300~5000MHz, the gain is in the range of -0.5~5.5db.

[0059] The above two results show that the antenna array arrangement of the present invention can effectively avoid interference between 5G antennas and 5G MIMO antennas in the same frequency band, has good isolation, and effectively improves antenna performance.

[0060] like Figure 13 and Figure 14 As shown, the operating frequency of the 2.4G / 5.8G WIFI antenna of the present invention is 2400~2500MHz and 5000~5900MHz. The present invention tests the two frequency bands respectively. The test results show that within the 2.4G frequency band, the gain value is stable at 1dB, and within the 5.8G frequency band, the gain value is between -0.5 and 3.5dB.

[0061] like Figure 15-16 As shown, the operating frequency of the 4G antenna of the present invention is 700~960MHz and 1700~2200MHz. The present invention tests the two frequency bands respectively. The test results show that in the low frequency band, the gain is in the range of -0.7~3db, and in the high frequency band, the gain is in the range of 1.2~4.8db.

[0062] The performance of the four antenna groups shows that the array antenna of the present invention, through its unique layout, can improve the signal isolation between antennas within a limited space. The symmetrical design of the dual antennas effectively improves the signal strength and various performance indicators of the antennas.

[0063] The specific implementation methods described above are preferred implementation methods of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A CPE array antenna, characterized by: The invention comprises four groups of antennas, which form a circular antenna array. Each group of antennas includes two antennas with exactly the same structure. The first group of antennas includes a first antenna and a second antenna. The first antenna and the second antenna are arranged parallel to each other, with the longitudinal perpendicular center line of the first antenna and the second antenna as the central axis. The second to fourth groups of antennas are symmetrically arranged on both sides of the central axis.

2. The CPE array antenna according to claim 1, wherein: The second, third and fourth antenna groups are staggered and not arranged in the same plane, and the extension lines of the second, third and fourth antenna groups do not intersect with the plane where the first antenna group is located.

3. The CPE array antenna according to claim 1, wherein: It also includes an annular fixing structure, on which mounting positions corresponding to the antennas are respectively provided, and four groups of eight antennas are respectively fixed on the corresponding mounting positions.

4. The CPE array antenna according to claim 3, wherein: The installation positions are installation slots, and one ends of the eight antennas are respectively inserted into the installation slots and fixed.

5. The CPE array antenna according to any one of claims 1 to 4, characterized in that: The first group of antennas is a 5G antenna, including a symmetrically arranged 5G main antenna and a 5G diversity antenna, the second group of antennas is a 5G MIMO antenna, the third group of antennas is a 2.4G / 5.8G WIFI antenna, and the fourth group of antennas is a 4G antenna, including a 4G main antenna and a 4G diversity antenna. The 2.4G / 5.8G WIFI antenna is arranged between the 5G MIMO antenna and the 4G antenna.

6. The CPE array antenna according to claim 5, characterized in that: The 5G antenna includes a first antenna PCB board and a circuit structure arranged on the front side of the first antenna PCB board. The circuit structure includes a bandwidth control ring, an upper arm of an antenna vibrator and a lower arm of an antenna vibrator arranged on the periphery of the bandwidth control ring. The bandwidth control ring is arranged at one end of the first antenna PCB board, and a dividing gap is provided on the bandwidth control ring toward the other end of the first antenna PCB board. The upper arm of the antenna vibrator and the lower arm of the antenna vibrator are respectively arranged on both sides of the dividing gap. The upper arm of the antenna vibrator is provided with a first feeding point and a groove near the dividing gap and the bandwidth control ring. The lower arm of the antenna vibrator is provided with a protrusion that passes through the dividing gap and extends into the groove, and the protrusion is provided with a first feeding point.

7. The CPE array antenna according to claim 6, wherein: The width of the dividing gap gradually increases toward the other end of the antenna PCB board. An antenna frequency control block is also provided at the end of the first antenna PCB board and at a set distance from the end of the lower arm of the antenna vibrator. The antenna frequency control block is connected to the lower arm of the antenna vibrator.

8. The CPE array antenna according to claim 5, wherein: The 5G MIMO antenna includes a 5G MIMO3 antenna and a 5G MIMO4 antenna with the same structure. The 5G MIMO3 antenna includes a second antenna PCB board. The second antenna PCB board is provided with a first radiating element and a second radiating element. A first feeding point is provided in the middle of the first radiating element. Two extension arms are provided at the end of the first radiating element away from the second radiating element. A first coupling channel is provided near the middle of the second radiating element. The feeding point is set at the bottom of the first coupling channel. The second radiating element is provided with an end extending to the first coupling channel. The end is provided with a second feeding point. The second radiating element is also provided with several radiating extension ends. The radiating extension ends can be coupled with the extension arms of the first radiating element to form a coupling frequency of 3 to 5 GHz. The frequencies controlled by the first radiating element and the second radiating element are superimposed on each other, and the operating frequency is set between 2000 and 5500 MHz.

9. The CPE array antenna according to claim 5, wherein: The 2.4G / 5.8G WiFi antenna includes a third antenna PCB board. A circuit structure is provided at one end of the front of the third antenna PCB board. The circuit structure includes an extended ground structure and an antenna frequency control structure connected to the extended ground structure. A coupling gap is provided between the extended ground structure and the antenna frequency control structure. A third feeding point and a third feeding point are provided on both sides of the coupling gap, respectively. The extended ground structure includes a ground structure and an extended ground extending toward the other end of the third antenna PCB board. A gap is provided in the middle of the extended ground and the ground structure, interconnected and connected to the coupling gap.

10. The CPE array antenna according to claim 5, characterized in that: The 4G antenna includes a fourth antenna PCB board, on which a low-frequency radiation element, a high-frequency radiation element, and a coupled radiation element are provided. A bandwidth extension unit is provided between the low-frequency radiation element and the coupled radiation element. A second coupling channel is provided in the middle of the coupled radiation element, and a fourth feeding point is provided at the bottom of the second coupling channel. One end of the high-frequency radiation element extends into the second coupling channel, and a fourth feeding point corresponding to the fourth feeding point is provided at the front end. The coupled radiation elements are symmetrically distributed on the front and back surfaces of the fourth antenna PCB board. A plurality of conductive holes that connect the front and back surfaces of the fourth antenna PCB board are also evenly provided on the coupled radiation element.

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