Anti-interference multi-band antenna structure

Abstract

The anti-interference multi-band antenna structure comprises a reflecting plate, a low-frequency radiation unit, a high-frequency radiation unit and a feed circuit board, the middle part of the reflecting plate is provided with a mounting hole for mounting the high-frequency radiation unit, and the edge of the reflecting plate is provided with a plurality of mounting positions for mounting the low-frequency radiation units; one surface of the reflecting plate is a fixed surface, the other surface of the reflecting plate is a mounting surface, a feed circuit board is detachably mounted on the fixed surface, a signal inlet piece is arranged on one surface, deviating from the fixed surface, of the feed circuit board, and an external signal line is electrically connected with the feed circuit board through the signal inlet piece; and the high-frequency radiation unit passes through the mounting hole and protrudes out of the mounting surface, and the high-frequency radiation unit is located at the center position of the plurality of low-frequency radiation units. The mounting column body can be used as an external protection structure of the copper wire and is blocked between the copper wire and the high-frequency radiation unit, so that the stability of signal transmission of the copper wire is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile antennas, in particular to an anti-interference multi-band antenna structure. Background Art

[0002] With the development of the communications industry, miniaturized, multi-band, and multi-standard base station antennas are increasingly becoming the mainstream antennas used in the communications industry. In order to improve space utilization, multi-band and multi-standard antennas currently generally adopt a coaxial nested structure, that is, embedding the high-frequency radiation unit into the low-frequency radiation unit. In the current base station antenna, the conventional nested radiation unit design consists of four low-frequency radiation units, which are connected to the feed network of the antenna system through a coaxial cable and power divider combination of one wavelength or longer. The cable on each low-frequency radiation unit is fixed to the reflector by electroplating welding. Since the cables on the four low-frequency radiation units need to be electroplated, the processing procedure is very complicated and troublesome, affecting the production and processing efficiency of the antenna. An antenna structure that can improve the antenna processing efficiency is urgently needed. Utility Model Content

[0003] In view of the above-mentioned defects, the purpose of the present invention is to provide an anti-interference multi-band antenna structure to reduce assembly difficulty and manufacturing cost.

[0004] To achieve this purpose, the utility model adopts the following technical solution: an anti-interference multi-band antenna structure includes: a reflector, a low-frequency radiation unit, a high-frequency radiation unit and a feed circuit board;

[0005] A reflector, wherein a mounting hole for mounting a high-frequency radiation unit is provided in the middle of the reflector, and a plurality of mounting positions for mounting a low-frequency radiation unit are provided at the edge of the reflector;

[0006] One side of the reflector is a fixing surface, and the other side is a mounting surface. A feeder circuit board is detachably mounted on the fixing surface. A signal inlet is provided on a side of the feeder circuit board away from the fixing surface. An external signal line is electrically connected to the feeder circuit board through the signal inlet.

[0007] A high-frequency radiation unit passes through the mounting hole and protrudes from the mounting surface, and the high-frequency radiation unit is located at the center of the plurality of low-frequency radiation units;

[0008] A low-frequency radiation unit, wherein the low-frequency radiation unit comprises two mounting structures in the same polarization direction, wherein the mounting structure comprises a mounting post and a copper wire, wherein one end of the mounting post is fixed to the mounting position, and the mounting post extends and protrudes toward the mounting surface;

[0009] A mounting groove is provided on a side of the mounting column away from the high-frequency radiation unit, one end of the mounting groove is connected to the fixing surface, a copper wire is fixed in the mounting groove by a fixing member, and one end of the copper wire is against the feed circuit board.

[0010] Preferably, fixed notches are respectively provided at the left and right ends of the feed circuit board, and when the copper wire abuts against the feed circuit board, the copper wire abuts against two inner wall surfaces facing each other of the fixed notches.

[0011] Preferably, the center of the feed circuit board is located on the line connecting the center of one of the low-frequency radiation units and the center of the mounting hole, and the left and right fixing notches of the feed circuit board are respectively against the copper wires of the two opposite low-frequency radiation units;

[0012] The feed circuit board is provided with an avoidance position, and a plurality of feed circuit boards are provided, and the plurality of feed circuit boards are arranged in a staggered manner, and the avoidance positions of different feed circuit boards are located at the same vertical position.

[0013] Preferably, an antenna arm extends horizontally from one end of the mounting column, and a plurality of antenna arms are arranged together to form a square;

[0014] The high-frequency radiation unit is located at the center of the square.

[0015] Preferably, the distance between the mounting ends of the two mounting poles of the same low-frequency radiation unit is greater than 2 to 5 cm.

[0016] Preferably, the distance between the two mounting posts of the same low-frequency radiation unit gradually decreases from the mounting end to the free end.

[0017] Preferably, the fixing member includes a first fixing member and a second fixing member, the first fixing member is installed on the free ends of two mounting columns of the same low-frequency radiation unit; the second fixing member is installed on the column body of the mounting column.

[0018] Preferably, the first fixing member includes a square cover, a shielding plate and a line-crossing protrusion;

[0019] The front edge, left edge and right edge of the square cover body are all provided with mounting notches;

[0020] The rear edge of the square cover is connected to the shielding plate, the shielding plate is provided with the wire-passing protrusion inwardly, and the wire-passing protrusion is provided with a through hole for the copper wire to pass through;

[0021] When the first fixing member is installed on the low-frequency radiation unit, the column bodies at the free ends of the two mounting columns are against the mounting recesses on the front edge of the square cover body, and the antenna arm is against the mounting recesses on the left or right edge of the square cover body.

[0022] Preferably, the second fixing member comprises a fixing frame, a clamping portion and a wire fixing portion;

[0023] The left and right sides of the fixing frame are vertically provided with a clamping part, and the clamping part is used to clamp the fixing frame to the column body of the mounting column; the fixing parts are respectively arranged on the front and rear sides, wherein the fixing parts are U-shaped structures, and the openings of the U-shaped structures of the two fixing parts are opposite;

[0024] When the first fixing member is installed on the low-frequency radiation unit, the wire fixing portion is placed in the installation groove, and the copper wires are respectively fixed in the openings of the two U-shaped structures.

[0025] One of the above technical solutions has the following advantages or beneficial effects: replacing traditional cables with copper wires, which are single copper conductors and only need to contact the reflector to immediately complete the radiation and transmission of signals, without performing additional electroplating operations in a disorderly manner, greatly speeding up the assembly efficiency. At the same time, the price of copper wires is much lower than that of cables, reducing the overall manufacturing cost of the antenna. However, if copper wires are used, they may be affected by the high-frequency radiation unit. For this reason, the mounting post and the side facing away from the high-frequency radiation unit are provided with mounting grooves. The mounting post is made of plastic material. At this time, the mounting post can serve as an external protective structure for the copper wire, blocking between the copper wire and the high-frequency radiation unit, thereby protecting the stability of the signal transmission of the copper wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0027] Figure 2 It is a bottom view of an embodiment of the utility model after the high-frequency radiation unit is disassembled.

[0028] Figure 3 It is a structural schematic diagram of a first fixing member in an embodiment of the utility model.

[0029] Figure 4 It is a structural schematic diagram of the second fixing member in an embodiment of the utility model.

[0030] Figure 5 It is a structural schematic diagram of a feed circuit board in an embodiment of the utility model.

[0031] Among them: reflector 1, fixing surface 1a, mounting surface 1b, low-frequency radiation unit 2, mounting column 2a, mounting groove 2aa, copper wire 2b, high-frequency radiation unit 3, feeder circuit board 4, fixing notch 4a, avoidance position 4b, mounting position 5, antenna arm 6, first fixing member 7, square cover 7a, shielding plate 7b, wire protrusion 7c, mounting recess 7d, through hole 7e, second fixing member 8, fixing frame 8a, clamping part 8b, wire fixing part 8c, signal entry member 9, mounting hole 10. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figures 1 to 5 As shown, an anti-interference multi-band antenna structure comprises: a reflector (1), a low-frequency radiation unit (2), a high-frequency radiation unit (3) and a feed circuit board (4);

[0037] A reflector (1), wherein a mounting hole (10) for mounting a high-frequency radiation unit (3) is provided in the middle of the reflector (1), and a plurality of mounting positions (5) for mounting a low-frequency radiation unit (2) are provided at the edge of the reflector (1);

[0038] One side of the reflection plate (1) is a fixing surface (1a), and the other side is a mounting surface (1b); a feeder circuit board (4) is detachably mounted on the fixing surface (1a); a signal inlet component (9) is mounted on a side of the feeder circuit board (4) facing away from the fixing surface (1a); an external signal line is electrically connected to the feeder circuit board (4) via the signal inlet component (9);

[0039] a high-frequency radiation unit (3) passing through the mounting hole (10) and protruding from the mounting surface (1b), wherein the high-frequency radiation unit (3) is located at a central position of the plurality of low-frequency radiation units (2);

[0040] A low-frequency radiation unit (2), the low-frequency radiation unit (2) comprising two mounting structures in the same polarization direction, the mounting structure comprising a mounting column (2a) and a copper wire (2b), one end of the mounting column (2a) being fixed to the mounting position (5), and the mounting column extending and protruding in the direction of the mounting surface (1b);

[0041] A mounting groove (2aa) is provided on a side of the mounting column (2a) facing away from the high-frequency radiation unit (3); one end of the mounting groove (2aa) is connected to the fixing surface (1a); a copper wire (2b) is fixed in the mounting groove (2aa) via a fixing member; one end of the copper wire (2b) abuts against the feed circuit board (4).

[0042] Since the cable is wrapped with a protective layer and insulating material on the outside and has a relatively complex internal structure, in order to ensure the stability of the signal, when assembling the antenna, it is necessary to remove the outer protective layer of the cable to expose the internal communication line, and then electroplate the communication line on the reflector (1). At this time, the assembly process takes a long time, which affects the production process. In order to facilitate installation, in the utility model, the copper wire (2b) replaces the traditional cable. The copper wire (2b) is a single copper conductor and only needs to contact the reflector (1) to immediately complete the radiation and transmission of the signal. No additional electroplating operation is required, which greatly speeds up the assembly efficiency. At the same time, the price of the copper wire (2b) is much lower than that of the cable, which reduces the overall manufacturing cost of the antenna. However, if the copper wire (2b) is used, it may be affected by the high-frequency radiation unit (3). For this reason, the mounting column (2a) and the side facing away from the high-frequency radiation unit (3) are provided with a mounting groove (2aa), and the mounting column (2a) is made of plastic material. In this case, the mounting column (2a) can serve as an external protective structure for the copper wire (2b), blocking between the copper wire (2b) and the high-frequency radiation unit (3), thereby improving the signal interference between the copper wire (2b) and the high-frequency radiation unit (3).

[0043] Preferably, Figure 5 As shown, the left and right ends of the feed circuit board (4) are respectively provided with fixed notches (4a), and when the copper wire (2b) abuts against the feed circuit board (4), the copper wire (2b) abuts against the two inner wall surfaces facing each other of the fixed notch (4a).

[0044] In order to improve the stability of the copper wire (2b) and the feeder circuit board (4) during installation, in the utility model, a fixed notch (4a) is provided on the feeder circuit board (4), one end of the copper wire (2b) is inserted into the fixed notch (4a), and the copper wire (2b) is against two opposite end faces of the fixed notch (4a). At this time, the two opposite sides of the copper wire (2b) are supported by the inner wall surface of the fixed notch (4a), so that the structure of the copper wire (2b) can be kept more stable, and it is not easy to fall off from the feeder circuit board (4).

[0045] Preferably, the center of the feed circuit board (4) is located on the line connecting the center of one of the low-frequency radiation units (2) and the center of the mounting hole (10), and the left and right fixing notches (4a) of the feed circuit board (4) are respectively abutted against the copper wires (2b) of the two opposite low-frequency radiation units (2).

[0046] The feed circuit board (4) is provided with a avoidance position (4b), a plurality of feed circuit boards (4) are provided, the plurality of feed circuit boards (4) are arranged in a staggered manner, and the avoidance positions (4b) of different feed circuit boards (4) are located at the same vertical position.

[0047] Since the existing wiring is quite messy, it is difficult for maintenance personnel to disassemble and assemble the corresponding cables during later repairs. Therefore, in the utility model, the center of the feeder circuit board (4) is the center for installation, and the installation position is located on the line connecting the center of one of the low-frequency radiation units (2) and the center of the installation hole (10). After the feeder circuit board (4) is installed, the distances from the left and right ends of the feeder circuit board (4) to the opposite low-frequency radiation units (2) are the same. At this time, the copper wires (2b) of the two opposite low-frequency radiation units (2) can directly contact the fixing notch (4a), making the installation and wiring more neat and tidy. At the same time, the feeder circuit board (4) is provided with an avoidance position (4b), so that multiple feeder circuits can be staggered, and the two feeder circuit boards (4) will not contact each other and affect each other. The feeder circuit board (4) can also be integrated in a place on the fixing surface (1a), which is convenient for maintenance personnel to repair.

[0048] Preferably, an antenna arm (6) extends horizontally from one end of the mounting column (2a), and a plurality of antenna arms (6) are arranged together to form a square.

[0049] The high-frequency radiation unit (3) is located at the center of the square.

[0050] Arranging the antenna arms (6) in a square can effectively utilize space, thereby reducing interference between the antenna arms (6) while maintaining a high signal coverage range. The four antenna arms (6) are arranged in a square to achieve better directivity. At the same time, more accurate signal transmission and reception directions are achieved, thereby improving the performance of the communication system.

[0051] Preferably, the distance between the mounting ends of the two mounting posts (2a) of the same low-frequency radiation unit (2) is greater than 2 to 5 cm.

[0052] Since the high-frequency radiation unit (3) is located at the center of the square, if the high-frequency radiation unit (3) is easily blocked by the mounting post (2a) of the low-frequency radiation unit (2) when radiating, in order to improve signal propagation, in the present invention, the distance between the mounting ends of the two mounting posts (2a) of the same low-frequency radiation unit (2) is greater than 2 to 5 cm. When the distance between the mounting ends of the two mounting posts (2a) increases, the high-frequency radiation signal can be propagated from the gap between the two mounting posts, thereby improving the signal propagation efficiency.

[0053] Preferably, the distance between the two mounting posts (2a) of the same low-frequency radiation unit (2) gradually decreases from the mounting end to the free end.

[0054] Preferably, the fixing member comprises a first fixing member (7) and a second fixing member (8), wherein the first fixing member (7) is installed on the free ends of two mounting columns (2a) of the same low-frequency radiation unit (2); and the second fixing member (8) is installed on the column body of the mounting column.

[0055] The first fixing member (7) and the second fixing member (8) are mounted on the low-frequency radiation unit (2) by means of a clamping method, which is convenient for disassembly and installation. At the same time, the first fixing member (7) and the second fixing member (8) are both made of plastic to avoid affecting the signal transmission of the copper wire (2b).

[0056] Preferably, Figure 3 As shown, the first fixing member (7) comprises a square cover (7a), a shielding plate (7b) and a line-crossing protrusion (7c);

[0057] The front edge, left edge and right edge of the square cover body (7a) are all provided with mounting recesses (7d);

[0058] The rear edge of the square cover (7a) is connected to the shielding plate (7b) downwardly, the shielding plate (7b) is provided with the wire-passing protrusion (7c) inwardly, and the wire-passing protrusion (7c) is provided with a through hole (7e) through which the copper wire (2b) passes;

[0059] When the first fixing member (7) is installed on the low-frequency radiation unit (2), the column bodies at the free ends of the two mounting columns (2a) abut against the mounting recesses (7d) at the front edge of the square cover body (7a), and the antenna arm (6) abuts against the mounting recesses (7d) at the left edge or the right edge of the square cover body (7a).

[0060] The first fixing member (7) can seal and cover the free ends of the two mounting posts (2a), thereby preventing dust from entering from the mounting groove (2aa) at the free ends and adhering to the copper wire (2b), thereby affecting the signal transmission efficiency of the copper wire (2b). During installation, it is only necessary to place the square cover body (7a) on the free ends of the two mounting posts (2a). At this time, the front edge, left edge and right edge of the square cover body (7a) are all provided with mounting recesses (7d), which can be connected to the antenna arm (6) or the column of the mounting post (2a) through the mounting recesses (7d). Thus, installation and fixation can be achieved quickly. At the same time, a through hole (7e) is provided in the wire-passing protrusion (7c), and the copper wire (2b) can pass through the through hole (7e) from one mounting column (2a) to another mounting column (2a), thereby achieving installation and fixation of the copper wire (2b) and avoiding external collision that causes the copper wire (2b) to fall off and affects the abutment relationship between the copper wire (2b) and the feeder circuit board (4).

[0061] Preferably, Figure 4 As shown, the second fixing member (8) comprises a fixing frame (8a), a clamping portion (8b) and a wire fixing portion (8c);

[0062] The left and right sides of the fixing frame (8a) are vertically provided with a clamping portion (8b), and the clamping portion (8b) is used to clamp the fixing frame (8a) to the column body of the mounting column (2a); the fixing portion (8c) is respectively arranged on the front and rear sides, wherein the fixing portion (8c) is a U-shaped structure, and the openings of the U-shaped structures of the two fixing portions (8c) are opposite;

[0063] When the first fixing member (7) is installed on the low-frequency radiation unit (2), the wire fixing portion (8c) is placed in the installation groove (2aa), and the copper wire (2b) is respectively fixed in the openings of the two U-shaped structures.

[0064] The clamping portion (8b) is a hook structure, which can be hooked on the column body of the installation column (2a) during installation to achieve the fixation of the second fixing member (8), and the fixing frame (8a) is provided with a wire fixing portion (8c), and the copper wire (2b) passes through the opening of the wire fixing portion (8c), and the openings of the two wire fixing portions (8c) are arranged in opposite directions, so that the copper wire (2b) can be better fixed and external collisions can be avoided, which may cause the copper wire (2b) to fall off and affect the abutment relationship between the copper wire (2b) and the feeder circuit board (4).

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An anti-interference multi-band antenna structure, characterized in that: include: Reflector, low frequency radiation unit, high frequency radiation unit and feeder circuit board; A reflector, wherein a mounting hole for mounting a high-frequency radiation unit is provided in the middle of the reflector, and a plurality of mounting positions for mounting a low-frequency radiation unit are provided at the edge of the reflector; One side of the reflector is a fixing surface, and the other side is a mounting surface. A feeder circuit board is detachably mounted on the fixing surface. A signal inlet is provided on a side of the feeder circuit board away from the fixing surface. An external signal line is electrically connected to the feeder circuit board through the signal inlet. A high-frequency radiation unit passes through the mounting hole and protrudes from the mounting surface, and the high-frequency radiation unit is located at the center of the plurality of low-frequency radiation units; A low-frequency radiation unit, wherein the low-frequency radiation unit comprises two mounting structures in the same polarization direction, wherein the mounting structure comprises a mounting post and a copper wire, wherein one end of the mounting post is fixed to the mounting position, and the mounting post extends and protrudes toward the mounting surface; A mounting groove is provided on a side of the mounting column away from the high-frequency radiation unit, one end of the mounting groove is connected to the fixing surface, a copper wire is fixed in the mounting groove by a fixing member, and one end of the copper wire is against the feed circuit board.

2. The anti-interference multi-band antenna structure according to claim 1, characterized in that: The left and right ends of the feed circuit board are respectively provided with fixed notches. When the copper wire abuts against the feed circuit board, the copper wire abuts against two inner wall surfaces facing each other of the fixed notches.

3. The anti-interference multi-band antenna structure according to claim 2, characterized in that: The center of the feed circuit board is located on the line connecting the center of one of the low-frequency radiation units and the center of the mounting hole, and the left and right fixing notches of the feed circuit board are respectively against the copper wires of the two opposite low-frequency radiation units; The feed circuit board is provided with an avoidance position, and a plurality of feed circuit boards are provided, and the plurality of feed circuit boards are arranged in a staggered manner, and the avoidance positions of different feed circuit boards are located at the same vertical position.

4. The anti-interference multi-band antenna structure according to claim 2, characterized in that: An antenna arm extends horizontally from one end of the mounting column, and a plurality of antenna arms are arranged together to form a square; The high-frequency radiation unit is located at the center of the square.

5. The anti-interference multi-band antenna structure according to claim 4, characterized in that: The distance between the installation ends of the two installation poles of the same low-frequency radiation unit is greater than 2 to 5 cm.

6. The anti-interference multi-band antenna structure according to claim 2, characterized in that: The distance between the two mounting posts of the same low-frequency radiation unit gradually decreases from the mounting end to the free end.

7. The anti-interference multi-band antenna structure according to claim 4, characterized in that: The fixing member includes a first fixing member and a second fixing member, wherein the first fixing member is installed at the free ends of two mounting columns of the same low-frequency radiation unit; and the second fixing member is installed at the column body of the mounting column.

8. The anti-interference multi-band antenna structure according to claim 7, characterized in that: The first fixing member includes a square cover, a shielding plate and a line-crossing protrusion; The front edge, left edge and right edge of the square cover body are all provided with mounting notches; The rear edge of the square cover is connected to the shielding plate, the shielding plate is provided with the wire-passing protrusion inwardly, and the wire-passing protrusion is provided with a through hole for the copper wire to pass through; When the first fixing member is installed on the low-frequency radiation unit, the column bodies at the free ends of the two mounting columns are against the mounting recesses on the front edge of the square cover body, and the antenna arm is against the mounting recesses on the left or right edge of the square cover body.

9. The anti-interference multi-band antenna structure according to claim 7, characterized in that: The second fixing member includes a fixing frame, a clamping portion and a wire fixing portion; The left and right sides of the fixing frame are vertically provided with a clamping part, and the clamping part is used to clamp the fixing frame to the column body of the mounting column; the fixing parts are respectively arranged on the front and rear sides, wherein the fixing parts are U-shaped structures, and the openings of the U-shaped structures of the two fixing parts are opposite; When the first fixing member is installed on the low-frequency radiation unit, the wire fixing portion is placed in the installation groove, and the copper wires are respectively fixed in the openings of the two U-shaped structures.

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