Horizontal polarization omnidirectional antenna
By designing the combination of multiple sets of half-wave dipole antenna groups and dielectric plates, the problem that existing antennas cannot achieve horizontal polarization omnidirectional coverage, achieving omnidirectional coverage and high efficiency in the horizontal direction, and are suitable for mass production and installation.
Patent Information
- Application Number
- CN202422311140.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Existing dipole antennas cannot simultaneously meet the need for good horizontal polarization omnidirectional coverage placed parallel to the ground.
A horizontally polarized omnidirectional antenna is designed, and multiple sets of half-wave dipole antenna groups and dielectric plates are used. The half-wave dipole antenna groups are installed on the dielectric plate in a circular array with the feeding point as the center. The branches and joints of the first and second dipole antennas are extended in opposite directions to ensure the consistent direction of the current to achieve omnidirectional radiation.
It realizes omnidirectional coverage in the horizontal direction, has good horizontal polarization effect, and has high efficiency in the 2.4G frequency band, and is simple and easy to install.
Smart Images
Figure CN223273508U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of antennas, in particular to a horizontally polarized omnidirectional antenna. Background Art
[0002] Conventional dipole omnidirectional antennas are mostly vertically polarized. However, with the development of mobile communications, in some special application scenarios, the requirements for horizontally polarized omnidirectional antennas are higher and are not limited to vertical polarization. Currently, existing dipole antennas cannot meet these requirements: the antenna must be placed parallel to the ground and achieve good horizontally polarized omnidirectional coverage.
[0003] Therefore, the prior art needs to be improved. Utility Model Content
[0004] In view of this, the present invention provides a horizontally polarized omnidirectional antenna for solving the problem that the dipole antennas in the prior art cannot meet: the antenna must be placed parallel to the ground and achieve good horizontally polarized omnidirectional coverage.
[0005] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the present invention proposes a horizontally polarized omnidirectional antenna, including multiple groups of half-wave dipole antenna groups and a dielectric plate, wherein a feeding point is provided on the dielectric plate, and multiple groups of the half-wave dipole antenna groups are installed on the dielectric plate in a circular array with the feeding point as the center; the half-wave dipole antenna group includes a first dipole antenna and a second dipole antenna, the first dipole antenna is located on the first surface of the dielectric plate, and the second dipole antenna is located on the second surface of the dielectric plate; the first dipole antenna includes a first branch, a second branch and a third branch, the first branch extends radially from the feeding point and with the feeding point as the center, and the second branch extends from one end of the first branch away from the feeding point. The arc extends counterclockwise or clockwise with the feeding point as the center, the third branch is an arc concentric with the second branch, the third branch and the second branch are located on the same side of the first branch, and one end of the third branch is connected to the first branch; the second dipole antenna includes a fourth branch, a fifth branch and a sixth branch, the fourth branch extends radially from the feeding point and with the feeding point as the center, the fifth branch extends in an arc from the end of the fourth branch away from the feeding point with the feeding point as the center in a direction opposite to the extension direction of the second branch, the sixth branch is an arc concentric with the fifth branch, the sixth branch and the fifth branch are located on the same side of the fourth branch, and one end of the sixth branch is connected to the fourth branch.
[0006] Preferably, the first branch and the fourth branch do not overlap in the vertical direction.
[0007] Preferably, the first branch and the fourth branch are of different lengths.
[0008] Preferably, the length of the first branch is 25 mm, and the length of the fourth branch is 20 mm.
[0009] Preferably, the dielectric plate is circular, and the diameter of the dielectric plate is 27 mm to 33 mm.
[0010] Preferably, the second branch section has the same length as the fifth branch section.
[0011] Preferably, the lengths of the second branch and the fifth branch are both 13 mm to 17 mm.
[0012] Preferably, the third branch section has the same length as the sixth branch section.
[0013] Preferably, the lengths of the third branch and the sixth branch are both 4 mm to 5 mm.
[0014] Preferably, the number of the half-wave dipole antenna groups is six.
[0015] Preferably, a micro connector interface is provided at the feeding point for connecting a coaxial feeder.
[0016] Preferably, the micro connector interface is an SMA interface.
[0017] The implementation of the present invention will have the following beneficial effects:
[0018] 1. It has good omnidirectionality in the horizontal direction, and can be placed parallel to the ground while achieving good horizontal polarization omnidirectional coverage;
[0019] 2. High efficiency in the 2.4G frequency band;
[0020] 3. Simple structure, suitable for mass production and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] in:
[0023] Figure 1 This is a schematic diagram of the top view of an embodiment of the present invention;
[0024] Figure 2 This is a schematic top view of the structure of a half-wave dipole antenna group in one embodiment of the present invention;
[0025] Figure 3 A return loss curve diagram of a horizontally polarized omnidirectional antenna provided in a specific embodiment of the present utility model;
[0026] Figure 4 This is an efficiency curve diagram of a horizontally polarized omnidirectional antenna provided in a specific embodiment of the present utility model;
[0027] Figure 5 、 Figure 6 、 Figure 7 The antenna pattern of the horizontally polarized omnidirectional antenna provided in a specific embodiment of the utility model.
[0028] The description of the accompanying drawings is as follows: 1. dielectric plate; 11. feeding point; 2. first dipole antenna; 21. first branch; 22. second branch; 23. third branch; 3. second dipole antenna; 31. fourth branch; 32. fifth branch; 33. sixth branch. DETAILED DESCRIPTION
[0029] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.
[0031] It is understood that the singular forms "a", "an", and "the" may also include plural forms, unless the context clearly indicates otherwise. It is also understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
[0032] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only. In the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle" and the like is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the present utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific circumstances.
[0033] Furthermore, the terms "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.
[0034] Reference Figure 1 、 Figure 2An embodiment of the present invention provides a horizontally polarized omnidirectional antenna, comprising a plurality of half-wave dipole antenna groups and a dielectric plate 1, wherein a feeding point 11 is provided on the dielectric plate 1, and the plurality of half-wave dipole antenna groups are installed on the dielectric plate 1 in a circular array with the feeding point 11 as the center; the half-wave dipole antenna group comprises a first dipole antenna 2 and a second dipole antenna 3, wherein the first dipole antenna 2 is located on the first surface of the dielectric plate 1, and the second dipole antenna 3 is located on the second surface of the dielectric plate 1; the first dipole antenna 2 comprises a first branch 21, a second branch 22 and a third branch 23, wherein the first branch 21 radially extends from the feeding point 11 and takes the feeding point 11 as the center, and the second branch 22 extends in a counterclockwise or clockwise arc from an end of the first branch 21 away from the feeding point 11 and takes the feeding point 11 as the center. Extension, the third branch 23 is an arc concentric with the second branch 22, the third branch 23 and the second branch 22 are located on the same side of the first branch 21, and one end of the third branch 23 is connected to the first branch 21; the second dipole antenna 3 includes a fourth branch 31, a fifth branch 32 and a sixth branch 33, the fourth branch 31 extends radially from the feeding point 11 and with the feeding point 11 as the center, the fifth branch 32 extends in an arc shape from the end of the fourth branch 31 away from the feeding point 11 with the feeding point 11 as the center in a direction opposite to the extension direction of the second branch 22, the sixth branch 33 is an arc concentric with the fifth branch 32, the sixth branch 33 and the fifth branch 32 are located on the same side of the fourth branch 31, and one end of the sixth branch 33 is connected to the fourth branch 31.
[0035] In the horizontally polarized omnidirectional antenna provided in this embodiment, the tangentially extending second branch 22 and third branch 23 extend in directions opposite to the radial first branch 21, and the fifth branch 32 and sixth branch 33 extend in directions opposite to the radial fourth branch 31. The first branch 21 and the fourth branch 31 are located on opposite sides of the dielectric plate 1, respectively, and the currents in the first branch 21 and the fourth branch 31 are in opposite directions during operation. This results in the currents in the tangentially extending second branch 22, the third branch 23, the fifth branch 32, and the sixth branch 33 being in the same direction during operation, thereby enabling the antenna to generate omnidirectional radiation.
[0036] In some optional embodiments, such as Figure 1 and Figure 2 As shown, the first branch 21 and the fourth branch 31 do not overlap in the vertical direction.
[0037] In some optional embodiments, such as Figure 1 and Figure 2 As shown, the first branch 21 and the fourth branch 31 have different lengths.
[0038] More specifically, the length of the first branch 21 is 25 mm, and the length of the fourth branch 31 is 20 mm.
[0039] In some optional embodiments, such as Figure 1 and Figure 2 As shown, the dielectric plate 1 is circular, and the diameter of the dielectric plate 1 is 27 mm to 33 mm; as a preferred example, the diameter of the dielectric plate 1 is 30 mm.
[0040] In some optional embodiments, such as Figure 1 and Figure 2 As shown, the second branch section 22 has the same length as the fifth branch section 32. Specifically, in some optional embodiments, the lengths of the second branch section 22 and the fifth branch section 32 are both 13 mm to 17 mm; as a preferred example, the lengths of the second branch section 22 and the fifth branch section 32 are both 15 mm.
[0041] In some optional embodiments, such as Figure 1 and Figure 2 As shown, the third branch 23 and the sixth branch 33 have the same length. Specifically, the lengths of the third branch 23 and the sixth branch 33 are both 4 mm to 5 mm. As a preferred example, the lengths of the third branch 23 and the sixth branch 33 are both 4.3 mm.
[0042] In some optional embodiments, such as Figure 1 As shown, the number of the half-wave dipole antenna groups is six.
[0043] In some optional embodiments, a micro connector interface is provided at the feeding point 11 for connecting a coaxial feeder to thereby realize feeding of the horizontally polarized omnidirectional antenna.
[0044] In some optional embodiments, the micro connector interface is an SMA interface.
[0045] The horizontally polarized omnidirectional antenna provided by the embodiment of the utility model is simple in structure, easy to produce and easy to install.
[0046] Figure 3 The return loss curve of the horizontally polarized omnidirectional antenna provided by the specific embodiment of the utility model is shown in FIG. Figure 4 It can be seen that the horizontally polarized omnidirectional antenna provided in the specific embodiment of the present invention can cover the WIFI 2.4G frequency band and meet the WIFI antenna frequency band design requirements.
[0047] Figure 4 The efficiency curve of the horizontally polarized omnidirectional antenna provided by the specific embodiment of the utility model is shown in FIG. Figure 4It can be seen that the horizontally polarized omnidirectional antenna provided by the specific embodiment of the present invention has an average efficiency of more than 80% in the 2.4G frequency band.
[0048] Figures 5 to 7 The antenna pattern of the horizontally polarized omnidirectional antenna provided in the specific embodiment of the utility model is as follows: Figures 5 to 7 It can be seen that the horizontally polarized omnidirectional antenna provided by the specific embodiment of the present invention has good omnidirectionality within a range of 360° in the horizontal direction.
[0049] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A horizontally polarized omnidirectional antenna, characterized by: The invention comprises a plurality of half-wave dipole antenna groups and a dielectric plate, wherein a feeding point is provided on the dielectric plate, and the plurality of half-wave dipole antenna groups are installed on the dielectric plate in a circular array with the feeding point as the center; the half-wave dipole antenna group comprises a first dipole antenna and a second dipole antenna, wherein the first dipole antenna is located on the first surface of the dielectric plate, and the second dipole antenna is located on the second surface of the dielectric plate; the first dipole antenna comprises a first branch, a second branch and a third branch, wherein the first branch radially extends from the feeding point and takes the feeding point as the center, and the second branch extends in an arc shape counterclockwise or clockwise from an end of the first branch away from the feeding point and takes the feeding point as the center. , the third branch is an arc concentric with the second branch, the third branch and the second branch are located on the same side of the first branch, and one end of the third branch is connected to the first branch; the second dipole antenna includes a fourth branch, a fifth branch and a sixth branch, the fourth branch extends radially from the feeding point and with the feeding point as the center, the fifth branch extends in an arc shape from the end of the fourth branch away from the feeding point with the feeding point as the center in a direction opposite to the extension direction of the second branch, the sixth branch is an arc concentric with the fifth branch, the sixth branch and the fifth branch are located on the same side of the fourth branch, and one end of the sixth branch is connected to the fourth branch.
2. The horizontally polarized omnidirectional antenna according to claim 1, wherein: The first branch node and the fourth branch node do not overlap in a vertical direction.
3. The horizontally polarized omnidirectional antenna according to claim 1 or 2, wherein: The first branch section and the fourth branch section have different lengths.
4. The horizontally polarized omnidirectional antenna according to claim 3, wherein: The length of the first branch is 25 mm, and the length of the fourth branch is 20 mm.
5. The horizontally polarized omnidirectional antenna according to claim 4, wherein: The dielectric plate is circular, and the diameter of the dielectric plate is 27 mm to 33 mm.
6. The horizontally polarized omnidirectional antenna according to claim 4, wherein: The second branch section has the same length as the fifth branch section.
7. The horizontally polarized omnidirectional antenna according to claim 6, wherein: The lengths of the second branch and the fifth branch are both 13 mm to 17 mm.
8. The horizontally polarized omnidirectional antenna according to claim 4, wherein: The third branch section has the same length as the sixth branch section.
9. The horizontally polarized omnidirectional antenna according to claim 8, wherein: The lengths of the third branch and the sixth branch are both 4 mm to 5 mm.
10. The horizontally polarized omnidirectional antenna according to claim 1, wherein: The number of the half-wave dipole antenna groups is six.