An asymmetric dipole antenna and gateway product

Abstract

This utility model discloses an asymmetric dipole antenna and gateway product, belonging to the field of antenna technology. The asymmetric dipole antenna includes an antenna ground plane etched on a PCB motherboard, a first antenna radiator laid flat on the PCB motherboard's clearance area, and a second antenna radiator protruding from one side of the PCB motherboard. The first antenna radiator includes a first ground transmission line connected to the antenna ground plane, and a second ground transmission line is connected to the end of the first ground transmission line. An antenna feed point is provided between the first ground transmission line and the second antenna radiator. The second antenna radiator and the first antenna radiator are located on different planes. The asymmetric dipole antenna described in this application satisfies the requirement of a small antenna clearance area while also meeting the high antenna directivity requirements of the product.

Description

Technical Field

[0001] This utility model application relates to the field of antenna technology, and in particular to an asymmetric dipole antenna and gateway product. Background Technology

[0002] With the development of mobile internet and technology, Wi-Fi has brought great convenience to people's lives, and its coverage and application range are becoming increasingly wide. Currently, the 2.4G Wi-Fi antennas used in CPE products generally adopt printed antenna technology. However, due to the inherent asymmetry in their physical structure and current path, general single-stage antennas, loop antennas, and IFA antennas can only meet low directivity requirements. Most products with high Wi-Fi antenna directivity requirements need to adopt symmetrical dipole antennas. Symmetrical dipole antennas often occupy a relatively large space, which affects the layout of other components on the PCB board and cannot meet the needs of product miniaturization. Therefore, there is an urgent need for an antenna that can achieve high directivity and occupy little space to make up for this deficiency. Utility Model Content

[0003] In view of this, the purpose of this utility model embodiment is to provide an asymmetric dipole antenna and gateway product to solve the problems of large space occupation of existing antenna clearance area and the inability of asymmetric dipole antenna to meet the high antenna directivity requirements of the product.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] According to one aspect of the present invention, an asymmetric dipole antenna is provided, comprising an antenna ground plane etched on a PCB motherboard, a first antenna radiator laid flat on a clearance area of ​​the PCB motherboard, and a second antenna radiator protruding from one side of the PCB motherboard. The first antenna radiator includes a first ground transmission line connected to the antenna ground plane, and a second ground transmission line is connected to the end of the first ground transmission line. An antenna feed point is provided between the first ground transmission line and the second antenna radiator. The second antenna radiator and the first antenna radiator are located on different planes.

[0006] The second grounding transmission line includes a first antenna feed line, a second antenna feed line, and a third antenna feed line. The first antenna feed line is perpendicularly connected to one end of the first grounding transmission line. The second antenna feed line is connected to one end of the first antenna feed line and is arranged parallel to the first grounding transmission line. The third antenna feed line is connected to one end of the second antenna feed line and is arranged perpendicular to the second antenna feed line.

[0007] The lateral width of the third antenna feed line is greater than the longitudinal width of the second antenna feed line.

[0008] The second antenna radiator includes a first feed transmission line, a second feed transmission line, and a third feed transmission line. The first feed transmission line is set perpendicular to the clearance area of ​​the PCB motherboard and close to the antenna feed point. One end of the third feed transmission line is connected to the clearance area of ​​the PCB motherboard and is set parallel to the first feed transmission line. The second feed transmission line is connected to the first feed transmission line and the third feed transmission line respectively and is set parallel to the second ground transmission line.

[0009] The second feeder transmission line is shaped like a "[".

[0010] The signal receiving frequency range of the first antenna radiator and the second antenna radiator is 2.4GHz-2.5GHz.

[0011] The first antenna radiator and the antenna ground plane laid on the PCB motherboard are both covered with copper.

[0012] Among them, the current on the second grounding transmission line is the largest near the antenna feed point, and the current is smaller the farther away from the antenna feed point.

[0013] Among them, the current is largest near the antenna feed point of the second antenna radiator, and the current distributed on it decreases the farther away from the antenna feed point.

[0014] According to another aspect of the present invention, a gateway product is provided, including a PCB motherboard and the aforementioned asymmetric dipole antenna.

[0015] Compared to existing technologies, which suffer from large PCB antenna clearance areas and the inability of asymmetric dipole antennas to meet the high directivity requirements of products, the asymmetric dipole antenna described in this application addresses these issues. The first antenna radiator of the asymmetric dipole antenna occupies a small clearance area on the PCB motherboard, and the second antenna radiator protrudes from the PCB motherboard without occupying any clearance area. Furthermore, the second antenna radiator can be integrated into the product structure, significantly saving space. Therefore, the asymmetric dipole antenna described in this application satisfies both the requirement of a small antenna clearance area and the high directivity requirements of products. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the asymmetric dipole antenna provided in an embodiment of the present invention;

[0018] Figure 2 This is a front structural schematic diagram of the asymmetric dipole antenna provided in this embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the resonance of the asymmetric dipole antenna provided in this embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram illustrating the overall efficiency of the asymmetric dipole antenna as a function of frequency, provided in this embodiment of the present invention.

[0021] Figure 5 A schematic diagram of the far-field mode of the asymmetric dipole antenna at a frequency of 2.45 GHz provided in this embodiment of the present invention. Detailed Implementation

[0022] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Please see Figures 1 to 5 This is a schematic diagram of an asymmetric dipole antenna provided in an embodiment of the present invention. For ease of explanation, only the parts relevant to this embodiment are shown.

[0024] Example 1

[0025] Please see Figure 1 and Figure 2This application provides an asymmetric dipole antenna, including a PCB motherboard 10, an antenna ground plane 11 etched on the PCB motherboard 10, a first antenna radiator 12 laid flat on the PCB motherboard clearance area 101, and a second antenna radiator 13 protruding from one side of the PCB motherboard 10. The first antenna radiator 12 includes a first ground transmission line 121 connected to the antenna ground plane 11. A second ground transmission line 122 is connected to the end of the first ground transmission line 121. An antenna feed point is provided between the first ground transmission line 121 and the second antenna radiator 13. The second antenna radiator 13 and the first antenna radiator 12 are located on different planes.

[0026] The second grounding transmission line 122 includes a first antenna feed line 1221, a second antenna feed line 1222, and a third antenna feed line 1223. The first antenna feed line 1221 is perpendicularly connected to one end of the first grounding transmission line 121. The second antenna feed line 1222 is connected to one end of the first antenna feed line 1221 and is arranged parallel to the first grounding transmission line 121. The third antenna feed line 1223 is connected to one end of the second antenna feed line 1222 and is arranged perpendicular to the second antenna feed line 1222.

[0027] In this embodiment, the lateral width of the third antenna feed line 1223 is greater than the longitudinal width of the second antenna feed line 1222.

[0028] The second antenna radiator 13 includes a first feed transmission line 131, a second feed transmission line 132, and a third feed transmission line 133. The first feed transmission line 131 is perpendicular to the PCB motherboard and close to the antenna feed point. One end of the third feed transmission line 133 is connected to the clearance area of ​​the PCB motherboard and is parallel to the first feed transmission line 131. The second feed transmission line 132 is connected to the first feed transmission line 131 and the third feed transmission line 133 respectively and is parallel to the second ground transmission line 122.

[0029] In this embodiment, the second feeder transmission line 132 is shaped like "[".

[0030] In this embodiment, the signal receiving frequency range of the first antenna radiator 12 and the second antenna radiator 13 is 2.4GHz-2.5GHz.

[0031] In this embodiment, the first antenna radiator 12 and the antenna ground plane 11 laid on the PCB motherboard 10 are both covered with copper.

[0032] In this application, the current on the second grounding transmission line 122 is the largest near the antenna feed point, and the current is smaller the farther away from the antenna feed point. That is, the end of the second grounding transmission line 122 is the point with the smallest current.

[0033] The current is greatest near the antenna feed point of the second antenna radiator 13, and the current is smaller the farther away from the antenna feed point. That is, the end of the third feed transmission line 133 of the second antenna radiator 13 is the point with the minimum current.

[0034] Please see Figure 3 The figure shows a schematic diagram of the Wi-Fi resonant reflection coefficient S obtained from laboratory testing of the asymmetric dipole antenna described in this application. As can be seen from the figure, the reflection system of the asymmetric dipole antenna described in this application is at a minimum at 2.45 GHz, and the standing wave depth can reach below -6 dB.

[0035] Please see Figure 4 The figure shows the overall efficiency of the asymmetric dipole antenna described in this application as a function of frequency. As can be seen from the figure, when using the asymmetric dipole antenna described in this application at 2.45 GHz, its overall efficiency is at its maximum value of -1.2 dB, and its directivity can reach 3.2 dBi.

[0036] Please see Figure 5 The figure shows a far-field mode diagram of this application at a frequency of 2.45 GHz. It can be seen from the figure that the radiation efficiency (Rad. Eff) is: -0.04423 dB → 99% efficiency (near lossless) (10^(-0.04423 / 10) ≈0.99).

[0037] Total Efficiency (Tot. Eff): -1.200 dB → 76% efficiency (compared to) Figure 4 Consistent)

[0038] Directivity (Dir.): 3.221 dBi, superior to isotropic antennas.

[0039] Therefore, it can be seen that the asymmetric dipole antenna described in this application has good directivity, which can meet the requirements of high antenna directivity while occupying a small area of ​​the antenna clearance area.

[0040] In practical use, the asymmetric dipole antenna described in this application occupies a small clearance area on the PCB motherboard for the first antenna radiator, and the second antenna radiator protrudes from the PCB motherboard and does not need to occupy clearance area on the PCB motherboard. The second antenna radiator can be integrated with the product structure, which can save a lot of space. Therefore, the asymmetric dipole antenna described in this application can meet the requirements of high antenna directivity while occupying a small clearance area.

[0041] Example 2

[0042] This application also provides a gateway product, which includes a PCB motherboard and an asymmetric dipole antenna mounted on the PCB motherboard. The asymmetric dipole antenna has been described in detail in Embodiment 1 above and will not be repeated here.

[0043] The gateway product described in this application uses an asymmetric dipole antenna, which can meet the requirement of high antenna directivity while miniaturizing the gateway product.

[0044] The preferred embodiments of this utility model have been described above with reference to the accompanying drawings, but this does not limit the scope of the utility model. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of this utility model should be within the scope of the utility model.

Claims

1. An asymmetric dipole antenna, characterized by, The device includes an antenna ground plane etched on a PCB motherboard, a first antenna radiator laid flat on the clearance area of ​​the PCB motherboard, and a second antenna radiator protruding from one side of the PCB motherboard. The first antenna radiator includes a first ground transmission line connected to the antenna ground plane, and a second ground transmission line is connected to the end of the first ground transmission line. An antenna feed point is provided between the first ground transmission line and the second antenna radiator. The second antenna radiator and the first antenna radiator are located on different planes.

2. The asymmetric dipole antenna of claim 1, wherein, The second grounding transmission line includes a first antenna feed line, a second antenna feed line, and a third antenna feed line. The first antenna feed line is perpendicularly connected to one end of the first grounding transmission line. The second antenna feed line is connected to one end of the first antenna feed line and is arranged parallel to the first grounding transmission line. The third antenna feed line is connected to one end of the second antenna feed line and is arranged perpendicular to the second antenna feed line.

3. The asymmetric dipole antenna of claim 2, wherein, The lateral width of the third antenna feed line is greater than the longitudinal width of the second antenna feed line.

4. The asymmetric dipole antenna of claim 2, wherein, The second antenna radiator includes a first feed transmission line, a second feed transmission line, and a third feed transmission line. The first feed transmission line is set perpendicular to the clearance area of ​​the PCB motherboard and close to the antenna feed point. One end of the third feed transmission line is connected to the clearance area of ​​the PCB motherboard and is set parallel to the first feed transmission line. The second feed transmission line is connected to the first feed transmission line and the third feed transmission line respectively and is set parallel to the second ground transmission line.

5. The asymmetric dipole antenna of claim 4, wherein, The second feeder transmission line is shaped like "[".

6. The asymmetric dipole antenna of claim 1, wherein, The signal receiving frequency range of the first antenna radiator and the second antenna radiator is 2.4GHz-2.5GHz.

7. The asymmetric dipole antenna as described in claim 1, characterized in that, The first antenna radiator and the antenna ground plane laid on the PCB motherboard are both covered with copper.

8. The asymmetric dipole antenna as described in claim 1, characterized in that, The current on the second grounding transmission line is greatest near the antenna feed point, and decreases as it moves further away from the antenna feed point.

9. The asymmetric dipole antenna as described in claim 1, characterized in that, The current is greatest near the antenna feed point of the second antenna radiator, and the current decreases the farther away from the antenna feed point.

10. A gateway product, characterized in that, Includes a PCB motherboard and an asymmetric dipole antenna as described in any one of claims 1-9.

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