Antenna applied to panel AP and panel AP
By using antenna elements with bent microstrip line structures and parasitic stubs to adjust the current phase difference in panel APs, the problem of insufficient antenna radiation intensity in panel APs was solved, and a high-gain directional radiation and low-loss antenna array was achieved.
Patent Information
- Application Number
- CN202511123079.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2025-11-18
AI Technical Summary
The antenna of the panel AP has insufficient radiation intensity due to space limitations, and the wall-mounted method poses challenges to electrical performance.
The antenna element employs a bent microstrip line structure, combined with parasitic stubs to adjust the current phase difference, thereby achieving directional radiation, and the gain is improved by arraying.
It achieves high-gain directional radiation in a limited space, reduces dielectric loss, and implements a high-gain antenna array using a low-cost single-panel panel.
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Figure CN120978385A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of antennas, and particularly relates to an antenna applied to a panel AP and the panel AP. BACKGROUND
[0002] The size of a panel AP (Access Point) device is usually small, and the space left for an antenna is very limited. In addition, the wall-mounted installation mode of the panel AP also brings great challenges to the electrical performance of the antenna. At present, the mainstream antenna scheme in the panel AP is to place omnidirectional antennas on both sides of the panel AP to radiate to all directions, but due to the panel antenna scheme and space constraints, the radiation intensity in the space is not high enough. SUMMARY
[0003] The application aims to provide an antenna applied to a panel AP and the panel AP, and aims to solve the problem that the radiation intensity of the conventional panel AP antenna is not enough due to the antenna scheme and space constraints.
[0004] In a first aspect, an embodiment of the application provides an antenna applied to a panel AP, comprising a substrate and one or more array-arranged antenna units arranged on one surface of the substrate, the antenna unit comprising a first dipole arm, a second dipole arm, a feed port, and at least one parasitic branch, the first dipole arm and the second dipole arm being arranged on opposite sides of the feed port and being coupled with the feed port respectively, the first dipole arm and the second dipole arm are both in a bent microstrip line structure, the parasitic branch is connected to the first dipole arm and / or the second dipole arm, and is used to adjust the current phase of the first dipole arm and the current phase of the second dipole arm to present a preset phase difference.
[0005] In some embodiments, the parasitic branch is connected to a current zero point of the first dipole arm and / or the second dipole arm.
[0006] In some embodiments, the first dipole arm and the second dipole arm constitute an odd-order mode dipole antenna unit.
[0007] In some embodiments, the first dipole arm and the second dipole arm are in an "arch" shape or an inverted "arch" shape.
[0008] In some embodiments, the first dipole arm and the second dipole arm both comprise a first L-shaped radiation line segment and at least one second L-shaped radiation line segment, wherein the short edge end of the first L-shaped radiation line segment is connected to the feed port, the long edge end of the first L-shaped radiation line segment is connected to the short edge end of the second L-shaped radiation line segment, and if there are more than two second L-shaped radiation line segments, the long edge end of a previous second L-shaped radiation line segment is connected to the short edge end of a subsequent second L-shaped radiation line segment.
[0009] In some embodiments, the long sides of the first L-shaped radiation line segment and the second L-shaped radiation line segment are parallel to each other, and the short sides of the first L-shaped radiation line segment and the second L-shaped radiation line segment are parallel to each other.
[0010] In some embodiments, the long sides of the first L-shaped radiation line segment and the second L-shaped radiation line segment are straight line segments or curved line segments.
[0011] In some embodiments, at least one of the short sides of the first L-shaped radiation line segment and the second L-shaped radiation line segment of the first dipole arm is connected with the parasitic branch.
[0012] In some embodiments, the parasitic branch is in the shape of a straight strip or a spindle.
[0013] In some embodiments, the parasitic branch is arranged on the first dipole arm, and the second dipole arm is not provided with the parasitic branch.
[0014] In some embodiments, a directing branch is further included, and the directing branch is arranged on the surface and located on the side of the second dipole arm away from the first dipole arm.
[0015] In a second aspect, the embodiments of the present application provide a panel AP, including the antenna applied to the panel AP as described above.
[0016] Compared with the related art, the embodiments of the present application have the beneficial effects that the one or more array-arranged antenna units of the antenna applied to the panel AP include a first dipole arm, a second dipole arm, a feeding port, and at least one parasitic branch, the first dipole arm and the second dipole arm are both in the structure of a bent microstrip line, and the miniaturization of a high-order mode antenna is achieved; the parasitic branch is connected to the first dipole arm and / or the second dipole arm, and is used to adjust the current phase of the first dipole arm and the current phase of the second dipole arm to present a preset phase difference, thereby realizing the directional radiation and gain improvement of the antenna; in addition, the antenna units can be arrayed, a high-gain antenna array can be realized by using a low-cost single panel, and the influence of dielectric loss is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 FIG. 1 is a structural schematic diagram of an antenna applied to a panel AP according to an embodiment of the present application;
[0018] Figure 2 FIG. 1 is a structural schematic diagram of an antenna applied to a panel AP according to an embodiment of the present application;
[0019] Figure 3 FIG. 1 is a structural schematic diagram of an antenna applied to a panel AP according to an embodiment of the present application;
[0020] Figure 4 A module diagram of an antenna applied to a panel AP is provided for an embodiment of the present application;
[0021] Figure 5 A corresponding diagram of an antenna applied to a panel AP is provided for an embodiment of the present application;
[0022] Figure 6 A corresponding diagram of an antenna applied to a panel AP is provided for an embodiment of the present application;
[0023] Figure 7 A corresponding diagram of an antenna applied to a panel AP is provided for an embodiment of the present application;
[0024] Figure 8 A three-dimensional radiation pattern and an XoZ plane radiation pattern of an antenna with a single antenna unit are provided for an embodiment of the present application;
[0025] Figure 9 A three-dimensional radiation pattern and an XoZ plane radiation pattern of an antenna with an antenna array are provided for an embodiment of the present application. DETAILED DESCRIPTION
[0026] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.
[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0029] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical characteristics. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.
[0030] Referring to Figure 1 and Figure 2 , an embodiment of the present application proposes an antenna applied to a panel AP, comprising a substrate 100 and one or more array-arranged antenna units 200 arranged on one surface of the substrate 100, the antenna unit 200 comprising a first dipole arm 210, a second dipole arm 220, a feed port 230, and at least one parasitic branch 240, the first dipole arm 210 and the second dipole arm 220 are respectively arranged on opposite sides of the feed port 230 and are respectively coupled with the feed port 230, the first dipole arm 210 and the second dipole arm 220 are both in a meander-shaped microstrip line structure, the parasitic branch 240 is connected to the first dipole arm 210 and / or the second dipole arm 220, for adjusting the current phase of the first dipole arm 210 and the current phase of the second dipole arm 220 to present a preset phase difference.
[0031] Among them, the substrate 100 is, for example, a single-layer FR4 board material. The structure of the first dipole arm 210 and the second dipole arm 220 can be matched with the corresponding shape according to the working frequency band, for example, to form a dipole antenna; or the working frequency bands of the two are different, and are configured into different shapes.
[0032] The first dipole arm 210 and the second dipole arm 220 are both in a meander-shaped microstrip line structure, which can make the antenna small in size and facilitate arrangement in the panel AP. The parasitic branch is used to regulate the current phase of the dipole arm, so that the current phases on the two sides of the dipole arm present a preset phase difference, to realize directional radiation of the antenna and further improve the gain of the antenna. Among them, the preset phase difference is set according to actual application requirements.
[0033] In order to further improve the antenna gain and make full use of the space in the panel AP, the directional radiation antenna unit 200 can be arrayed, referring to Figure 2 . The two antenna units 200 are fed in parallel through a transmission line, the size of the two antenna units 200 is fine-tuned to regulate the gain of the array antenna, and the feed distance is regulated to adjust the standing wave of the antenna.
[0034] In some embodiments, when the plurality of antenna units 200 are arranged in an array, each of the antenna units 200 can be fed in parallel by parallel double lines 300, which include a first feeding line 310 and a second feeding line 320 parallel to each other. The midpoints of the first feeding line 310 and the second feeding line 320 are connected to the feeding port 230, and the two ends of the first feeding line 310 are connected to the first dipole arms 210 of the two antenna units 200.
[0035] When the antenna units 200 are two, the two ends of the second feeding line 320 are connected to the second dipole arms 220 of the two antenna units 200. It can be understood that the output impedance can be adjusted by adjusting the size of the parallel double lines, and thus the antenna standing wave can be adjusted.
[0036] When the antenna units 200 are more than three, the size and relative position relationship of the parallel double lines 300, the antenna units 200, and the feeding port 230 can be arranged according to the substrate 100, the size of the panel AP is fully utilized, and the antenna gain is improved.
[0037] Referring to Figure 3 and Figure 4 In some embodiments, the first dipole arm 210 and the second dipole arm 220 form a high-order mode dipole antenna, which realizes the miniaturization of the antenna. Typically, the first dipole arm 210 and the second dipole arm 220 form an odd-order mode dipole antenna unit. Exemplarily, Figure 3 An embodiment of a third-order mode dipole antenna is shown. Exemplarily, Figure 4 An embodiment of a seventh-order mode dipole antenna is shown.
[0038] Referring to Figures 1-4 In some embodiments, the parasitic branch 240 is connected at the current zero point of the first dipole arm 210 and / or the second dipole arm 220. The current zero point can be determined by simulation of the dipole arm. Generally, the bending part of the dipole arm is the current zero point. The parasitic branch 240 is added to adjust the current phase of one of the dipole arms, so that the current phases on the two dipole arms exhibit a predetermined phase difference, to realize directional radiation of the antenna, and thus improve the gain of the antenna.
[0039] It can be understood that as the antenna gain is improved, the front-to-back ratio of the antenna will become worse and worse, and thus it is necessary to improve the front-to-back ratio of the antenna to maximize the antenna gain. The adjustment of the antenna gain and the front-to-back ratio can be realized by adjusting at least one of the shape or size of the parasitic branch 240, the bending degree and / or size of the first dipole arm 210, and the bending degree and / or size of the second dipole arm 220.
[0040] Referring to Figures 1-7In some embodiments, the first and second arms 210 and 220 are both serpentine microstrip line structures, which save the space of the substrate 100 while meeting the required length of the trace.
[0041] Referring to Figures 1-4 In some embodiments, the first and second arms 210 and 220 each include a first L-shaped radiating line segment 211 and at least one second L-shaped radiating line segment 212, wherein the short end of the first L-shaped radiating line segment 211 is connected to the feed port 230, the long end of the first L-shaped radiating line segment 211 is connected to the short end of the second L-shaped radiating line segment 212; if there are more than two second L-shaped radiating line segments 212, the long end of the former second L-shaped radiating line segment 212 is connected to the short end of the latter second L-shaped radiating line segment 212, and the long end of the last second L-shaped radiating line segment 212 is left hanging.
[0042] wherein, Figure 1 , 2 In the embodiments, there are two second L-shaped radiating line segments 212 on each arm. Figure 3 In the embodiments, there is one second L-shaped radiating line segment 212 on each arm. Figure 4 In the embodiments, there are three second L-shaped radiating line segments 212 on each arm. The serpentine microstrip line structure saves the space of the substrate 100 while meeting the required length of the trace.
[0043] Referring to Figure 1 , 2 In some embodiments, when there are two second L-shaped radiating line segments 212, the first and second arms 210 and 220 are in the shape of an "arch", and the second arm 220 is in the shape of an inverted "arch". The serpentine microstrip line structure saves the space of the substrate 100 while meeting the required length of the trace.
[0044] Referring to Figures 1-4 In some embodiments, the long edges of the first and second L-shaped radiating line segments 211 and 212 are parallel to each other, and the short edges of the first and second L-shaped radiating line segments 211 and 212 are parallel to each other. That is, the connected ends are perpendicular to each other. However, as can be seen from the foregoing description, this is a typical special case.
[0045] In other embodiments, as the antenna gain increases, the front-to-back ratio of the antenna becomes worse and worse, so it is necessary to adjust at least one of the bending degree and / or size of the first arm 210 and the bending degree and / or size of the second arm 220 to achieve the adjustment of the antenna gain and the front-to-back ratio, improve the front-to-back ratio of the antenna, and maximize the antenna gain. It can be understood that adjusting the bending degree of the arm may make the connected ends of the radiating line segments no longer perpendicular to each other.
[0046] In some embodiments, each long side of the first L-shaped radiation line segment 211 and the second L-shaped radiation line segment 212 is a long straight line segment (see Figures 1 to 4 ) or a curved line segment. See Figure 5 , the curved line segment, for example, forms a zigzag line segment, which is beneficial to the miniaturization of the antenna while improving the gain of the antenna.
[0047] In some embodiments, the parasitic branch 240 is arranged at at least one bending of the meander line structure of the first dipole arm 210. The phase distribution of the current on the dipole arm is adjusted by adding the parasitic branch 240, so that the current phases on the two dipole arms present a preset phase difference.
[0048] In some embodiments, at least one of the short sides of the first L-shaped radiation line segment 211 and the second L-shaped radiation line segment 212 of the first dipole arm 210 is connected with the parasitic branch 240. That is, the parasitic branch 240 is added at the bending, so as to adjust the current phase of the dipole arm. In some embodiments, the parasitic branch 240 is in a straight strip shape (see Figures 1 to 5 ) or a spindle shape (see Figure 6 ). The shape of the parasitic branch 240 can be freely selected, which is beneficial to the layout of the microstrip line and the miniaturization of the product.
[0049] Please refer to Figures 1-7 , in some embodiments, the parasitic branch 240 is arranged on the first dipole arm 210, and the second dipole arm 220 is not provided with the parasitic branch 240. To realize the directional radiation of the antenna, the phase distribution of the current on the dipole arm on one side of the high-order mode dipole antenna is adjusted by adding the parasitic branch 240, so that the current phases on the two dipole arms present a preset phase difference. In the case that the current phase adjustment can be realized, the arrangement of the parasitic branch 240 is reduced, which is beneficial to the layout of the antenna and the clearance of the circuit board.
[0050] Please refer to Figure 7 , in some embodiments, the parasitic branch 240 is arranged on the first dipole arm 210, and the second dipole arm 220 is not provided with the parasitic branch 240, and the antenna further comprises a director branch 250 arranged on the surface of the substrate 100 on the side of the second dipole arm 220 away from the first dipole arm 210, so as to further improve the gain of the antenna.
[0051] Please refer to Figure 1 , 3 -7 and Figure 8, by bending two dipole arms of a high-order mode dipole antenna and adding a parasitic branch 240 at the current zero point (bending point) of one of the dipole arms, a small-sized directional antenna unit design is realized. The directional antenna unit is only 30mmx10mmx0.8mm in size, and the board material of the substrate 100 is a low-cost FR4 single-sided board, and a peak gain of 4.92dBi is realized at 5.5GHz.
[0052] Please refer to Figure 2 and Figure 9 In order to fully utilize the size in the panel AP and improve the antenna gain, the above small-sized directional antenna unit is arrayed on a 75.5mmx10mmx0.8mm FR4 single-sided board, and a peak gain of 7.24dBi is finally realized at 5.5GHz.
[0053] In a second aspect, the embodiments of the present application provide a panel AP, comprising the above antenna applied to the panel AP.
[0054] Compared with the related art, the beneficial effects of the embodiments of the present application are: one or more arrayed antenna units 200 of the antenna applied to the panel AP, the antenna unit 200 comprising a first dipole arm 210, a second dipole arm 220, a feed port 230 and at least one parasitic branch 240, the first dipole arm 210 and the second dipole arm 220 are both bending-shaped microstrip line structures, realizing the miniaturization of the antenna; the parasitic branch 240 is connected to the first dipole arm 210 and / or the second dipole arm 220, for adjusting the current phase of the first dipole arm 210 and the current phase of the second dipole arm 220 to present a preset phase difference, thereby realizing the directional radiation and gain improvement of the antenna; in addition, by arraying the antenna units 200, a low-cost single-sided board can be used to realize a high-gain antenna array and reduce the influence of dielectric loss.
[0055] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. An antenna applied to an application panel (AP), characterized by, The antenna includes a substrate and one or more arrayed antenna units arranged on one surface of the substrate, the antenna unit including a first dipole arm, a second dipole arm, a feed port, and at least one parasitic branch, the first dipole arm and the second dipole arm being arranged on opposite sides of the feed port and coupled to the feed port, the first dipole arm and the second dipole arm being both in a meander line structure, the parasitic branch being connected to the first dipole arm and / or the second dipole arm for adjusting the current phase of the first dipole arm and the current phase of the second dipole arm to present a preset phase difference.
2. The antenna of claim 1, wherein The parasitic branch is connected to a current zero point of the first dipole arm and / or the second dipole arm.
3. The antenna of claim 1, wherein The first dipole arm and the second dipole arm constitute an odd-order mode dipole antenna unit.
4. The antenna of claim 1, wherein The first dipole arm and the second dipole arm both include a first L-shaped radiation line segment and at least one second L-shaped radiation line segment, wherein the short end of the first L-shaped radiation line segment is connected to the feed port, and the long end of the first L-shaped radiation line segment is connected to the short end of the second L-shaped radiation line segment; if there are more than two second L-shaped radiation line segments, the long end of a previous second L-shaped radiation line segment is connected to the short end of a subsequent second L-shaped radiation line segment.
5. The antenna of claim 4, wherein, The long ends of the first L-shaped radiation line segment and the second L-shaped radiation line segment are parallel to each other, and the short ends of the first L-shaped radiation line segment and the second L-shaped radiation line segment are parallel to each other.
6. The antenna of claim 4, wherein, The long ends of the first L-shaped radiation line segment and the second L-shaped radiation line segment are in a straight line segment or a curved line segment.
7. The antenna of claim 4, wherein, At least one of the short ends of the first L-shaped radiation line segment and the second L-shaped radiation line segment of the first dipole arm is connected to the parasitic branch.
8. The antenna of any one of claims 1 to 7, wherein, The parasitic branch is in a straight strip shape or a spindle shape.
9. The antenna of any one of claims 1 to 7, wherein, The parasitic branch is arranged on the first dipole arm, and the second dipole arm is not provided with the parasitic branch.
10. The antenna of claim 9, wherein, A director is further included, the director being arranged on the surface and located on a side of the second dipole arm away from the first dipole arm.
11. An access point, AP, characterized by An antenna applied to an application panel (AP) is included, the antenna being as claimed in any one of claims 1 to 10.