All-in-one antenna

Abstract

The utility model provides an all-in-one antenna, and relates to the technical field of antennas, the antenna module comprises a circuit board and an antenna module, the antenna module comprises a plurality of first antennas electrically connected to a first surface of the circuit board, a second surface of the circuit board is provided with a current path, and the second surface and the first surface are arranged oppositely; a difference exists between the coupling phase between any two first antennas and the phase of the current path. The plurality of first antennas are integrated on the circuit board, so that signal reception with different functions is realized, multiple antennas are integrated into a whole, namely, the arrangement of an all-in-one antenna is realized, and the application requirement of antenna miniaturization is facilitated. The current path is introduced, and when the coupling phase between any two first antennas and the phase of the current path have a difference value, the isolation between the first antennas can be improved. A plurality of antennas can be integrated in a relatively small space, the isolation between the antennas is relatively good, and the space utilization rate is high.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an all-in-one antenna. Background Art

[0002] With the rapid development of satellite communications and mobile communications, MIMO (Multiple Input Multiple Output, which generally refers to the synchronous transmission and reception of wireless network signals through multiple antennas to increase data transmission rate) communication systems have become mainstream, and all-in-one antennas are increasingly widely used, so higher requirements are put forward for multiple antennas and antenna integration, which generally need to meet the requirements of multiple antenna integration, wide antenna bandwidth, high radiation efficiency, good isolation, and small size. In order to improve the isolation, the existing all-in-one antennas increase the distance between antennas, making the overall size of the antenna relatively large; some antennas have poor integration in a limited space and can only achieve two-in-one or three-in-one antennas. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide an all-in-one antenna that can integrate multiple antennas, has good isolation between antennas, and has high space utilization.

[0004] In one aspect of an embodiment of the present application, an all-in-one antenna is provided, including a circuit board and an antenna module, the antenna module including a plurality of first antennas electrically connected to a first surface of the circuit board, a current path being arranged on a second surface of the circuit board, the second surface and the first surface being arranged opposite to each other, and a coupling phase between any two of the first antennas having a difference with a phase of the current path.

[0005] Optionally, a difference between a coupling phase between any two of the first antennas and a phase of the current path is 180 degrees±20 degrees.

[0006] Optionally, at least one metal ground is provided on the first surface of the circuit board, and the plurality of first antennas are electrically connected to the at least one metal ground.

[0007] Optionally, when there are multiple metal grounds, a DC open circuit is set between the multiple metal grounds.

[0008] Optionally, the circuit board is divided into a corresponding plurality of coupling areas by a plurality of the metal grounds, and the current path flows through the plurality of the coupling areas.

[0009] Optionally, the antenna module further includes a second antenna, and the second antenna is arranged on the first surface of the circuit board, or is separately arranged outside the circuit board.

[0010] Optionally, it further includes a shell and a base, and a sealing ring is further provided on the inner wall of the shell to form a sealed space between the shell and the base, and the circuit board and the antenna module are located in the sealed space.

[0011] Optionally, the base may be detachably connected to a mounting bracket, so as to connect the all-in-one antenna to an external structure through the mounting bracket.

[0012] Optionally, the mounting bracket and the base are connected by any one of a stud connection, a magnetic connection, and an adhesive connection.

[0013] Optionally, a bending plate is formed on the mounting bracket, and a clamp assembly is provided on the bending plate for passing a mounting rod for connecting to an external structure.

[0014] The all-in-one antenna provided in the embodiment of the present application includes: a circuit board and an antenna module, the antenna module includes a plurality of first antennas electrically connected to the first surface of the circuit board, a current path is arranged on the second surface of the circuit board, the second surface and the first surface are arranged opposite to each other, and there is a difference between the coupling phase between any two first antennas and the phase of the current path. Multiple first antennas are integrated on the circuit board to realize signal reception of different functions, and to realize the setting of integrating multiple antennas into one, that is, to realize the setting of the all-in-one antenna, which is conducive to the application requirements of miniaturization of antennas. By introducing the current path, when there is a difference between the coupling phase between any two first antennas and the phase of the current path, the isolation between the first antennas can be improved. Multiple antennas can be integrated in a relatively small space, and the isolation between the antennas is relatively good, and the space utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a schematic diagram of the exploded structure of the all-in-one antenna provided in this embodiment;

[0017] Figure 2 is a schematic diagram of the partial structure of the all-in-one antenna provided in this embodiment;

[0018] Figure 3a This is one of the structural schematic diagrams of the all-in-one antenna circuit board provided in this embodiment;

[0019] Figure 3b This is the second structural schematic diagram of the all-in-one antenna circuit board provided in this embodiment;

[0020] Figure 4 This is one of the all-in-one antenna installation schematics provided in this embodiment;

[0021] Figure 5 This is the second schematic diagram of the all-in-one antenna installation provided in this embodiment;

[0022] Figure 6 This is the third schematic diagram of the all-in-one antenna installation provided in this embodiment;

[0023] Figure 7 This is the fourth schematic diagram of the all-in-one antenna installation provided in this embodiment;

[0024] Figure 8 This is the fifth all-in-one antenna installation diagram provided in this embodiment.

[0025] Icons: 1-housing; 2, 14-sealing ring; 3-GNSS active antenna; 4, 7, 10, 13, 28-screws; 5-MH antenna; 6-LMH antenna; 8-circuit board; 9-base; 11A-mounting bracket; 11-stud A; 12-stud B; 15-gasket; 16-nut; 16a-threaded pipe; 17-GNSS cable; 18-LMH cable; 19-MH cable; 20-shielding cover; 21-adhesive layer; 22-CE label; 23-mounting plate; 24-mounting base; 25-bending plate; 26-clamp assembly; 27-mounting rod; 29-wall expansion pin; E-current path; F-isolation tape; Q-wall. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0027] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Please refer to Figure 1 An embodiment of the present application provides an all-in-one antenna, including: a circuit board 8 and an antenna module, the antenna module including a plurality of first antennas electrically connected to a first surface 8a of the circuit board 8, a current path E is provided on a second surface 8b of the circuit board 8, the second surface 8b and the first surface 8a are arranged opposite to each other, and there is a difference between the coupling phase between any two first antennas and the phase of the current path E.

[0030] In one embodiment, the difference between the coupling phase between any two first antennas and the phase of the current path E is 180 degrees ±20 degrees.

[0031] The circuit board 8 includes a first surface 8a and a second surface 8b, and the first surface 8a and the second surface 8b are opposite to each other; for example, in the present application, the first surface 8a of the circuit board 8 is the front surface, and the second surface 8b is the back surface. A plurality of first antennas electrically connected to the circuit board 8 are arranged on the first surface 8a of the circuit board 8, and the functions and types of the plurality of first antennas may be the same or different; the plurality of first antennas are integrated on the circuit board 8 to realize signal reception of different functions, realize the setting of integrating multiple antennas into one, that is, realize the setting of multiple antennas, which is conducive to the application demand of miniaturization of antennas.

[0032] For example, the all-in-one antenna of the present application has an overall size of φ103.5 mm×42.5 mm to meet the needs of miniaturization scenarios.

[0033] The number of first antennas arranged on the circuit board 8 depends on the operating frequency of the first antenna. When the operating frequency of the first antenna is lower and the space occupied is larger, in order to achieve miniaturization, the number of first antennas that can be arranged on the circuit board 8 is smaller. Therefore, how the first antenna is arranged on the circuit board 8 depends on specific needs.

[0034] On this basis, the second side 8b of the circuit board 8 of the present application introduces a current path E. When the difference between the coupling phase between any two first antennas and the phase of the current path E is 180 degrees, the isolation between the first antennas can be improved.

[0035] In one embodiment of the present application, Figure 2As shown, the multiple first antennas arranged on the circuit board 8 are two MH (Low High, referring to medium and high frequency bands) antennas 5, whose operating frequencies are 1400-6000MHz; and two LMH (Low Middle High, referring to low, medium and high frequency bands) antennas 6, whose operating frequencies are 600-6000MHz.

[0036] At least one metal ground is provided on the first surface 8a of the circuit board 8, and the plurality of first antennas are electrically connected to the at least one metal ground. When there are a plurality of metal grounds, a DC open circuit is provided between the plurality of metal grounds.

[0037] When the circuit board 8 has only one metal ground, all the first antennas can be connected to this metal ground; however, the area of ​​the metal ground needs to be larger to accommodate more first antennas, resulting in poor isolation between the first antennas.

[0038] When there are multiple metal grounds, multiple first antennas can be connected to corresponding metal grounds as needed. For example, the first antennas and metal grounds can correspond one to one, or some of the first antennas correspond to the same metal ground.

[0039] Taking the above embodiment as an example, the MH antenna 5 and the LMH antenna 6 are soldered on the circuit board 8, and the copper foil on the circuit board 8 is used as the antenna ground. One MH antenna 5 and one LMH antenna 6 share one metal ground, and another MH antenna 5 and another LMH antenna 6 share another metal ground, and the DC between the two metal grounds is open.

[0040] The circuit board 8 is divided into a corresponding plurality of coupling areas by a plurality of metal grounds, and the current path E flows through the plurality of coupling areas.

[0041] The above embodiments are connected to two metal grounds of the circuit board 8 in pairs, dividing the circuit board 8 into two coupling areas; Figure 3a In the figure, the circuit board 8 is a disc structure, and the circuit board 8 is divided into two semicircular coupling areas by the isolation belt F in the middle, and the isolation belt disconnects the metals of the two coupling areas.

[0042] One group of LMH antennas 6 is welded at point C of the circuit board 8, and the MH antenna 5 is welded at point D of the circuit board 8; another group of LMH antennas 6 is welded at point A of the circuit board 8, and the MH antenna 5 is welded at point B of the circuit board 8; the four first antennas are in a rotated distribution state as a whole.

[0043] Figure 3bA current path E is introduced to the back of the middle circuit board 8, and the current path E spans across the two coupling areas. For example, when the energy at point A is coupled to point C, by introducing the current path E coupling, when the coupling phase between point A and point C differs from the phase of the current path E by 180 degrees, the energy of point AC and the current path E are equal in magnitude and opposite in direction, so the coupling energy between point A and point C can be basically offset, thereby improving the isolation between point A and point C.

[0044] It can be seen that the current path E is used to adjust the isolation between the first antennas.

[0045] In addition, the antenna module further includes a second antenna, which is disposed on the first surface 8 a of the circuit board 8 or is separately disposed outside the circuit board 8 .

[0046] When the second antenna is disposed on the first surface 8a of the circuit board 8, the second antenna can be considered to be the first antenna, and has all the functions described above for the first antenna.

[0047] The second antenna may also be arranged outside the circuit board 8. In this case, there is no connection between the second antenna and the first antenna and the circuit board 8, and the second antenna can independently realize its receiving function.

[0048] For example, in the present application, the second antenna may be a GNSS (Global Navigation Satellite System, which refers to an antenna that can be used for global satellite positioning systems such as GPS / GLONASS / Ga lileo / Beidou) active antenna 3, and the operating frequency band is L1+L5. The GNSS active antenna 3 is composed of two ceramic patch antennas of different sizes, and the bottom of the ceramic patch antenna is connected to an active amplifier circuit to amplify the signal.

[0049] Of course, an active amplifier circuit may also be provided at the bottom of the first antenna (the side facing the circuit board 8 ) to amplify the signal.

[0050] When the second antenna is separately arranged outside the circuit board 8, the antenna module is not limited to being integrated on the circuit board 8, and the antenna can be separately arranged according to space or other requirements, further increasing the number and function of the antenna.

[0051] The embodiment of the present application realizes the requirement of integrating two MH antennas 5 , two LMH antennas 6 and one GNSS active antenna 3 into a five-in-one configuration.

[0052] The all-in-one antenna further includes a housing 1 and a base 9. A sealing ring 2 is further provided on the top inner wall of the housing 1 to form a sealed space between the housing 1 and the base 9. The circuit board 8 and the antenna module are located in the sealed space.

[0053] The all-in-one antenna is integrally sealed and waterproof, meeting IP67, IP69K, and I K09 protection requirements.

[0054] Figure 1 In the embodiment, the GNSS active antenna 3 is fixed to the housing 1 by means of screws 4, which can minimize the influence of the MH antenna 5 and the LMH antenna 6 on the GNSS active antenna 3 and achieve a more compact antenna distribution.

[0055] A shielding cover 20 is further provided below the GNSS active antenna 3 to further isolate the signal interference with the MH antenna 5 and the LMH antenna 6 .

[0056] The whole formed by the circuit board 8 , the MH antenna 5 and the LMH antenna 6 is also arranged in the housing 1 and is located below the whole GNSS active antenna 3 .

[0057] The whole formed by the MH antenna 5 and the LMH antenna 6 is fixed to the base 9 by screws 7 and 10. The base 9 is also provided with a CE label 22 and an adhesive layer 21. The adhesive layer 21 can be used to bond the mounting column protruding from the base 9. The screw 7 is fixed to the base 9 by the mounting column.

[0058] The base 9 can also be detachably connected to a mounting bracket 11A, so that the all-in-one antenna can be connected to an external structure through the mounting bracket 11A.

[0059] The internal and external structures of the all-in-one antenna are DC open circuited to avoid electrostatic interference to the equipment.

[0060] Figure 1 The middle mounting bracket 11A includes a stud A11 , a stud B12 , a screw 13 , a sealing ring 14 , a gasket 15 , a nut 16 , a GNSS cable 17 , a LMH cable 18 , and a MH cable 19 .

[0061] The GNSS cable 17 is connected to the GNSS active antenna 3, the LMH cable 18 is connected to the LMH antenna 6, and the MH cable 19 is connected to the MH antenna 5. The GNSS cable 17, the LMH cable 18, and the MH cable 19 are connected to the corresponding antennas through the threaded tube 16a; the threaded tube 16a is connected to the stud A11 and the stud B12.

[0062] For example, Figure 1 When threadedly connected, stud A11 and stud B12 are arranged side by side in a split structure. Stud A11 and stud B12 are connected to the base 9 by screws 13 respectively. The sealing ring 14 and the gasket 15 are sleeved on the threaded tube 16a and are located between the side-by-side structure of stud A11 and stud B12 and the nut 16. The nut 16 and the threaded tube 16a are connected by M20 threads, and other mounting brackets 11A can be disassembled and replaced to achieve the fastening connection of each component.

[0063] Figure 4 The mounting bracket 11A is connected to the antenna structure integrally formed by the housing 1 , the circuit board 8 and the antenna module through the mounting plate 23 .

[0064] Or Figure 5 Magnetic connection and adhesive connection. Figure 5 The lower part of the middle antenna structure is connected to the mounting base 24 , and the mounting bracket 11A is inserted into the mounting base 24 . A strong magnet is arranged in the mounting base 24 to adsorb and fix the mounting plate 23 .

[0065] Another possible situation is that Figure 5 The magnetic attraction is changed to adhesive bonding, and adhesive is arranged in the mounting base 24 to bond the mounting plate 23. The adhesive can be 3M VHB adhesive.

[0066] like Figure 6 to Figure 8 As shown, a bending plate 25 is formed on the mounting bracket 11A, and a clamp assembly 26 is provided on the bending plate 25 for passing a mounting rod 27 for connecting to an external structure, and the connection with the external structure is achieved through the mounting rod 27.

[0067] Figure 6 The middle mounting rod 27 is arranged horizontally. Figure 7 The mounting rod 27 is arranged vertically, and the clamp assembly 26 is adapted thereto.

[0068] Figure 8 The multi-in-one antenna is connected to the wall surface Q, and the wall mounting is realized by screws 28 and wall expansion pins 29 on the bending plate 25.

[0069] The above-mentioned various connection methods such as magnetic attraction, sticking, pole holding, wall hanging, etc. can meet the usage requirements of different scenarios.

[0070] The all-in-one antenna provided in the embodiment of the present application can integrate multiple antennas in a relatively small space, and the isolation between the antennas is relatively good, and the space utilization rate is high. At the same time, the solution has a variety of flexible and changeable installation accessories, which can meet the use requirements of various different scenarios.

[0071] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An all-in-one antenna, characterized in that: include: A circuit board and an antenna module, wherein the antenna module includes a plurality of first antennas electrically connected to a first surface of the circuit board, a current path is arranged on a second surface of the circuit board, the second surface and the first surface are arranged opposite to each other, and there is a difference between the coupling phase between any two of the first antennas and the phase of the current path.

2. The all-in-one antenna according to claim 1, characterized in that: The difference between the coupling phase between any two of the first antennas and the phase of the current path is 180 degrees ±20 degrees.

3. The all-in-one antenna according to claim 1, characterized in that: At least one metal ground is disposed on the first surface of the circuit board, and the plurality of first antennas are electrically connected to the at least one metal ground.

4. The all-in-one antenna according to claim 3, characterized in that: When there are multiple metal grounds, a DC open circuit is set between the multiple metal grounds.

5. The all-in-one antenna according to claim 4, characterized in that: The circuit board is divided into a corresponding plurality of coupling areas by a plurality of the metal grounds, and the current path flows through the plurality of the coupling areas.

6. The all-in-one antenna according to claim 3, characterized in that: The antenna module further includes a second antenna, and the second antenna is disposed on the first surface of the circuit board, or is separately disposed outside the circuit board.

7. The all-in-one antenna according to any one of claims 1 to 6, characterized in that: It also includes a shell and a base. A sealing ring is provided on the inner wall of the shell to form a sealed space between the shell and the base. The circuit board and the antenna module are located in the sealed space.

8. The all-in-one antenna according to claim 7, characterized in that: The base is also detachably connected to a mounting bracket, so that the all-in-one antenna can be connected to an external structure through the mounting bracket.

9. The all-in-one antenna according to claim 8, characterized in that: The mounting bracket and the base are connected by any one of a stud connection, a magnetic connection, and an adhesive connection.

10. The all-in-one antenna according to claim 8, characterized in that: A bending plate is formed on the mounting bracket, and a clamp assembly is arranged on the bending plate for passing a mounting rod for connecting an external structure.

Images