5G full-frequency communication antenna

Abstract

The utility model relates to a 5G full-frequency communication antenna, which comprises an assembly plate, a feed pad, an impedance conversion line, a snakelike down-conversion line and a radiation branch knot are sequentially arranged on the assembly plate, and grounding pads welded with a coaxial cable shielding cover are arranged on two sides of one side, opposite to the impedance conversion line, of the feed pad; the tail end of the impedance conversion line is connected with the starting end of the snakelike down-conversion line; the radiation branch knot adopts an E-shaped symmetrical structure; the two sides of the connection position of the feeder line and the impedance conversion line are provided with H-shaped symmetrical branch grounding parts which extend from the grounding bonding pad to the area where the snake-shaped down-conversion line is located, and a plurality of coupling gaps are formed between the H-shaped symmetrical branch grounding parts and the snake-shaped down-conversion line at intervals. According to the 5G full-frequency communication antenna designed by the utility model, a symmetrical stable structure is adopted as a whole, the impedance conversion line is accessed after the feeder line is utilized, more frequency points are generated through the cooperation of the snake-shaped frequency reduction line, the E-shaped symmetrical radiation branch knot, the H-shaped symmetrical branch knot and other structures, and the bandwidth is effectively expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of communication antennas, in particular to a 5G full-frequency communication antenna. Background Art

[0002] In existing technologies, 5G communications have strict requirements for high speed, high capacity, and low latency. Therefore, 5G antennas need to have good radiation performance and support higher data transmission rates, wider coverage, and lower signal latency. Although there are many 5G antennas suitable for different scenarios, such as large sector antennas and small mobile antennas, there is still a lack of suitable antenna designs for some special scenarios, such as vehicle-mounted and cabinet environments.

[0003] These scenarios may have different requirements for antennas, requiring more flexible and miniaturized solutions. For example, the antennas currently used in some vehicle-mounted, cabinet-mounted and other environments are generally large in size, and miniaturization requirements are difficult to meet in these scenarios. The miniaturized design of 5G antennas needs to address more space constraints, adapt to the challenges of different environments, and reduce size while maintaining performance. In addition, the 5G communication frequency band is different from existing communication frequency bands such as 4G / 3G / 2G. However, in order to ensure backward compatibility, 5G antennas need to cover and support multiple communication frequency bands. This increases the complexity of antenna design, especially in meeting the requirements of multiple frequency bands while miniaturizing. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a miniaturized communication antenna with a frequency band covering the full 5G frequency band.

[0005] In order to achieve the above-mentioned purpose, the 5G full-frequency communication antenna designed by the utility model includes an assembly board, on which a feed pad, an impedance conversion line, a serpentine frequency reduction line and a radiation branch are arranged in sequence, the feed pad is used to connect to the core wire of an external coaxial cable, and the feed pad is connected to the starting end of the impedance conversion line through the feed line, and the two sides of the feed pad opposite to the impedance conversion line are provided with grounding pads welded to the coaxial cable shielding cover; the end of the impedance conversion line is connected to the starting end of the serpentine frequency reduction line to adjust the impedance matching between the antenna and the feed line; the radiation branch adopts a "mountain" symmetrical structure, and the starting end of the radiation branch is connected to the end of the serpentine frequency reduction line; H-shaped symmetrical branch grounding parts extending from the grounding pad to the area where the serpentine frequency reduction line is located are provided on both sides of the connection position between the feed line and the impedance conversion line, and a plurality of coupling gaps are formed between the H-shaped symmetrical branch grounding parts and the serpentine frequency reduction line.

[0006] In order to optimize the structural layout, the radiation branch node has its "mountain" structure opening side arranged toward the area where the serpentine frequency reduction line is located, and the radiation branch node is connected to the end of the serpentine frequency reduction line through the branch node in the middle of its "mountain" structure.

[0007] A further solution is that the width of the branch connecting the radiating branch and the serpentine frequency reduction line is greater than the width of the branches on both sides of the "mountain" structure, and first arc-shaped connecting arms are provided on the branches on both sides of the radiating branch.

[0008] A further solution is that the H-shaped symmetrical branch grounding portion includes two L-shaped connecting portions and a straight-line branch that are symmetrically arranged about the axis of the feeder, the long sides of the L-shaped connecting portions are connected to the grounding pad, and the short sides are connected to the straight-line branch portions, and the long sides of the two L-shaped connecting portions are spaced apart to form a channel for the feeder to pass through, and a second arc-shaped connecting arm is provided on the side of the straight-line branch close to the feed pad.

[0009] In order to reduce energy reflection and loss, the impedance matching between the antenna and the feeder is 50Ω.

[0010] In order to make the debugging, testing and troubleshooting of the antenna system more convenient and efficient, a test resistance pad is provided at the starting portion of the feed line adjacent to the feed pad.

[0011] In order to facilitate processing and reduce manufacturing costs, the assembly board is a single-sided copper-clad PCB made of FR-4 material.

[0012] In order to facilitate fixing of the antenna, a plurality of fixing through holes are provided on the assembly plate.

[0013] The 5G full-frequency communication antenna designed by the utility model adopts a symmetrical and stable structure as a whole. The impedance conversion line is connected after the feeder to effectively adjust the impedance matching of the antenna and the feeder to 50Ω, and the serpentine frequency reduction line is adopted to greatly reduce the occupied area while reducing the frequency. The end of the radiating surface adopts "mountain" symmetrical radiation branches to generate multiple frequency points while expanding the bandwidth to a certain extent. The grounding part adopts H-shaped symmetrical branches, and there are multiple coupling gaps between the grounding part and the frequency reduction serpentine frequency reduction line to generate more frequency points and effectively expand the bandwidth. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of Example 1;

[0015] Figure 2 This is the 4G frequency band test diagram of Example 1;

[0016] Figure 3 This is the 4G+5G frequency band test diagram of Example 1.

[0017] Among them: assembly board 1, feeding pad 2, impedance conversion line 3, serpentine frequency reduction line 4, radiation branch 5, first arc-shaped connecting arm 51, feeding line 6, grounding pad 7, H-shaped symmetrical branch grounding part 8, L-shaped connecting part 81, straight branch 82, second arc-shaped connecting arm 83, resistor pad 9, through hole 10, coupling gap 11. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example 1.

[0020] like Figure 1 As shown, the 5G full-frequency communication antenna described in this embodiment includes an assembly board 1, on which a feed pad 2, an impedance conversion line 3, a serpentine frequency reduction line 4 and a radiation branch 5 are arranged in sequence, the feed pad 2 is used to connect to the core wire of an external coaxial cable, and the feed pad 2 is connected to the starting end of the impedance conversion line 3 through a feed line 6, and the two sides of the feed pad 2 opposite to the impedance conversion line 3 are provided with grounding pads 7 welded to the coaxial cable shielding cover; the end of the impedance conversion line 3 is connected to the starting end of the serpentine frequency reduction line 4, which is used to adjust the impedance matching between the antenna and the feed line 6; the radiation branch 5 adopts a "mountain" symmetrical structure, and the starting end of the radiation branch 5 is connected to the end of the serpentine frequency reduction line 4; H-shaped symmetrical branch grounding portions 8 extending from the grounding pad 7 to the area where the serpentine frequency reduction line 4 is located are provided on both sides of the connection position between the feed line 6 and the impedance conversion line 3, and a plurality of coupling gaps 11 are formed between the H-shaped symmetrical branch grounding portions 8 and the serpentine frequency reduction line 4.

[0021] Specifically, the core wire of the external coaxial feed line 6 is welded on the feed pad 2, and the feed pad 2 is connected to the impedance conversion line 3 through the feed line 66, so that the feed line 6 and the impedance conversion line 3 are connected.

[0022] The impedance of the antenna is matched, and the impedance of the antenna and the feed line 6 is adjusted to 50Ω. The matched signal enters the serpentine frequency reduction line 4 from the impedance conversion line 3. The serpentine structure reduces the working frequency band of the antenna and greatly reduces the area occupied by the conventional microstrip line. The signal after frequency reduction excites the radiation branch 5 to generate electromagnetic radiation and generate multiple frequency points. The "mountain" symmetrical structure of the radiation branch 5 generates multiple frequency points while expanding the bandwidth to a certain extent. The H-shaped symmetrical branch grounding part 8 extending from the ground pad 7 forms multiple coupling gaps 11 with the serpentine frequency reduction line 4, which are used to couple out more resonant frequency points. In order to verify the working bandwidth of the antenna, the antenna of Example 1 was tested in the 4G and 5G frequency bands. The test results are as follows: Figure 2 and Figure 3 As shown, Figure 2 The S11 parameters when only the 4G frequency band is covered are given. Figure 3 The S11 parameters when covering both the 4G and 5G frequency bands are given. It can be seen that the antenna of this embodiment successfully achieves the technical effect of full-band coverage.

[0023] In this embodiment, if Figure 1As shown, in order to optimize the structural layout, the side of the opening of the "mountain" structure of the radiation branch 5 is arranged toward the area where the serpentine frequency reduction line 4 is located, and the radiation branch 5 is connected to the end of the serpentine frequency reduction line 4 through the branch in the middle of the "mountain" structure. This structural optimization method ensures the appropriate connection and layout between the radiation branch 5 and the serpentine frequency reduction line 4, so as to optimize the performance and working effect of the antenna. In this embodiment, as Figure 1 As shown, the width of the branch connecting the radiating branch 5 and the serpentine frequency reduction line 4 is greater than the width of the branches on both sides of the "mountain" structure, and the branches on both sides of the radiating branch 5 are provided with first arc-shaped connecting arms 51 to optimize signal transmission and radiation performance.

[0024] In this embodiment, if Figure 1 As shown, the H-shaped symmetrical branch grounding portion 8 includes two L-shaped connecting portions 81 and a straight branch 82 for the feeder 6 to be symmetrically arranged along the axis, the long side of the L-shaped connecting portion 81 is connected to the grounding pad 7, the short side is connected to the straight branch 82, and the long sides of the two L-shaped connecting portions 81 are spaced to form a channel for the feeder 6 to pass through, and the straight branch 82 is provided with a second arc-shaped connecting arm 83 on one side close to the feed pad 2. By symmetrically arranging the L-shaped connecting portion 81 and the straight branch 82 along the axis, combined with the mutual connection between the second arc-shaped connecting arms 83, a specific structural layout is formed, which is conducive to performance consistency.

[0025] In this embodiment, if Figure 1 As shown, in order to make the debugging, testing and troubleshooting of the antenna system more convenient and efficient, a test resistor pad 9 is provided at the starting portion of the feed line 6 adjacent to the feed pad 2. The test resistor pad 9 provides a convenient interface or location for connecting a test device or a test point, and can evaluate the performance, signal transmission quality and impedance matching of the antenna system.

[0026] In this embodiment, for ease of processing and low manufacturing cost, the assembly board 1 is a PCB single-sided copper-clad board made of FR-4 material. The single-sided copper-clad board made of FR-4 material is usually relatively low in cost. This helps to reduce manufacturing costs and to a certain extent reduce production costs, especially in large-scale production.

[0027] In this embodiment, if Figure 1 As shown, in order to facilitate the fixing of the antenna, the assembly board 1 is provided with a plurality of fixing through holes 10. By using the fixing through holes 10, the antenna can be firmly fixed at a desired position with screws, nuts or other fixing elements, thereby improving the fixation and stability of the antenna.

[0028] The 5G full-frequency communication antenna provided in this embodiment adopts a symmetrical and stable structure as a whole. The impedance conversion line is connected after the feeder to effectively adjust the impedance matching of the antenna and the feeder to 50Ω. The serpentine frequency reduction line is adopted to greatly reduce the occupied area while reducing the frequency. The end of the radiating surface adopts "mountain" symmetrical radiation branches to generate multiple frequency points while expanding the bandwidth to a certain extent. The grounding part adopts H-shaped symmetrical branches, and there are multiple coupling gaps between the grounding part and the frequency reduction serpentine frequency reduction line to generate more frequency points and effectively expand the bandwidth.

[0029] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. 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 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 the present invention.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A 5G full-frequency communication antenna, comprising a mounting plate (1), characterized in that: The assembly board (1) is provided with a feeding pad (2), an impedance conversion line (3), a serpentine frequency reduction line (4) and a radiation branch (5) arranged in sequence. The feeding pad (2) is used to connect to an external coaxial cable core wire, and the feeding pad (2) is connected to the starting end of the impedance conversion line (3) through a feeding line (6). The feeding pad (2) is provided with grounding pads (7) welded to the coaxial cable shielding cover on both sides of the side opposite to the impedance conversion line (3); the end of the impedance conversion line (3) is connected to the starting end of the serpentine frequency reduction line (4). The radiating branch (5) is connected to the starting end thereof and is used for adjusting the impedance matching between the antenna and the feeder (6); the radiating branch (5) adopts a "mountain" symmetrical structure, and the starting end of the radiating branch (5) is connected to the end of the serpentine frequency reduction line (4); H-shaped symmetrical branch grounding portions (8) extending from the grounding pad (7) to the area where the serpentine frequency reduction line (4) is located are provided on both sides of the connection position between the feeder (6) and the impedance conversion line (3), and a plurality of coupling gaps (11) are formed between the H-shaped symmetrical branch grounding portions (8) and the serpentine frequency reduction line (4).

2. The 5G full-frequency communication antenna according to claim 1, characterized in that: The radiation branch node (5) is arranged with its "mountain"-shaped structure opening side facing the area where the serpentine frequency reduction line (4) is located, and the radiation branch node (5) is connected to the end of the serpentine frequency reduction line (4) through the branch node in the middle of its "mountain"-shaped structure.

3. The 5G full-frequency communication antenna according to claim 2, characterized in that: The width of the branch connecting the radiating branch (5) and the serpentine frequency reduction line (4) is greater than the width of the branches on both sides of the "mountain" structure, and first arc-shaped connecting arms (51) are provided on the branches on both sides of the radiating branch (5).

4. The 5G full-frequency communication antenna according to claim 1, 2 or 3, characterized in that: The H-shaped symmetrical branch grounding portion (8) comprises two L-shaped connecting portions (81) and a straight branch (82) arranged symmetrically about the axis of the two feed lines (6); the long side of the L-shaped connecting portion (81) is connected to the grounding pad (7), and the short side is connected to the straight branch (82); and a channel for the feed line (6) to pass through is formed at intervals between the long sides of the two L-shaped connecting portions (81); and a second arc-shaped connecting arm (83) is arranged on one side of the straight branch (82) close to the feed pad (2).

5. The 5G full-frequency communication antenna according to claim 1, characterized in that: The impedance matching between the antenna and the feed line (6) is 50Ω.

6. The 5G full-frequency communication antenna according to claim 1, characterized in that: A test resistance pad (9) is provided at a starting portion of the feed line (6) adjacent to the feed pad (2).

7. The 5G full-frequency communication antenna according to claim 1, characterized in that: The assembly board (1) is a single-sided copper-clad PCB made of FR-4 material.

8. The 5G full-frequency communication antenna according to claim 1 or 7, characterized in that: The assembly plate (1) is provided with a plurality of fixing through holes (10).

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