CN213520304U

CN213520304U - High-gain WLAN antenna

Info

Publication number: CN213520304U
Application number: CN202022431705.2U
Authority: CN
Inventors: 章玉涛; 卓贵清; 何耀铭; 陈志兴; 黄锋
Original assignee: Guangdong Shenglu Telecommunication Tech Co Ltd
Current assignee: Guangdong Shenglu Telecommunication Tech Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-06-22
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a high-gain WLAN antenna, divide ware and a plurality of radiating element including reflecting plate, merit, wherein: the radiation unit comprises a first guide sheet, a second guide sheet and a folded vibrator which are sequentially installed from top to bottom, the radiation unit further comprises a metal column, the radiation unit is installed on one side of the reflecting plate through the metal column, and the power divider is installed on the other side of the reflecting plate. Implement the utility model discloses be favorable to improving the gain of WLAN antenna.

Description

High-gain WLAN antenna

Technical Field

The utility model relates to a wireless communication technology field especially relates to a high-gain WLAN antenna.

Background

The WLAN (Wireless Local Area network) technology brings great convenience to people in terms of flexibility, rate and capacity of networking, and the antenna is used as a key component of Wireless transmission, so that the performance of the antenna is good and bad in relation to the quality of the whole networking.

WLAN antennas are commonly divided into omni-directional and directional. The omnidirectional antenna can realize 360-degree coverage and is suitable for household use, but the gain is low and is generally between 3 and 5dBi, so that the coverage distance is short. The gain of the directional antenna realizes the coverage in a certain specific direction by a reflecting plate and an array mode, and can meet the requirement of long-distance coverage.

The conventional directional antenna WLAN antenna realizes high gain by a 2 x 2 and 2 x 4 matrix arrangement mode, and can reach 14 dBi. However, in the design of the radiation unit, the gain of the radiation unit is limited, and the aperture is not fully utilized, resulting in insufficient gain. Therefore, how to improve the radiating element to improve the gain of the WLAN antenna is a technical problem that needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high-gain WLAN antenna is provided, through improving the radiating element structure to improve the gain of WLAN antenna.

In order to solve the technical problem, the utility model discloses a high-gain WLAN antenna, divide ware and a plurality of radiating element including reflecting plate, merit, wherein:

the radiation unit comprises a first guide sheet, a second guide sheet and a folded vibrator which are sequentially arranged from bottom to top, and also comprises a metal column,

the radiation unit is installed at one side of the reflection plate through the metal post,

the power divider is arranged on the other side of the reflecting plate.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the utility model discloses in, through set up two-layer guide to the piece in radiating element to and convert into the oscillator, through the inner space of rational utilization antenna, start from radiating element's structure, the available bore of make full use of antenna, and be favorable to improving this radiating element's gain.

As an alternative embodiment, in the present invention, the radiation units are arranged in a 2 × 2 matrix and mounted on the reflection plate.

As an optional implementation manner, in the utility model discloses, the merit is divided the ware and is included two merits and divide the unit, the merit is divided the unit and is provided with an input and four outputs, wherein:

the first output end, the second output end and the input end are arranged on one side edge of the power divider, the third output end and the fourth output end are arranged on the other side edge of the power divider,

the first output end is connected with the third output end through a first microstrip line,

the second output end is connected with the fourth output end through a second microstrip line,

a third microstrip line is arranged between the first microstrip line and the second microstrip line,

the input end is connected with the third microstrip line through a fourth microstrip line.

As an optional implementation manner, in the present invention, the first microstrip line, the second microstrip line, the third microstrip line, and the fourth microstrip line are linear.

As an alternative embodiment, the present invention further comprises a coaxial line, wherein,

the metal column is grounded and forms a current loop with the outer conductor of the coaxial line so as to realize balanced feed.

As an optional implementation manner, in the present invention, the radiation unit further includes a PCB bottom plate, the PCB bottom plate is installed between the metal pillar and the reflection plate, and the metal pillar and the coaxial line are welded on the PCB bottom plate.

As an optional implementation manner, in the present invention, the edge of the reflection plate is folded upwards relative to the plane where the reflection plate is located, so as to form a surrounding edge.

As an optional implementation manner, in the present invention, the folded dipole is a dual-polarized folded dipole, and the dual-polarized folded dipole forms ± 45 ° polarization by vector superposition in the vertical and horizontal directions.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a high-gain WLAN antenna according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a power divider of the high-gain WLAN antenna shown in fig. 1;

fig. 3 is a diagram illustrating the result of the high-gain WLAN antenna gain test according to an embodiment of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

As shown in fig. 1, an embodiment of the present invention discloses a high-gain WLAN antenna, which includes a reflection plate 200, a power divider (not shown in fig. 1) and a plurality of radiation units 100, wherein:

the radiating element 100 includes a first guide plate 110, a second guide plate 120, and a folded dipole 210, which are sequentially installed from top to bottom, the radiating element 100 further includes a metal post (not shown in fig. 1),

the radiation unit 100 is mounted on one side of the reflection plate 200 by a metal pillar,

the power divider is installed at the other side of the reflection plate 200.

The embodiment of the utility model provides an in, through set up two-layer guide piece in radiating element to and convert into the oscillator, through the inner space of rational utilization antenna, start from radiating element's structure, the available bore of make full use of antenna, and be favorable to improving this radiating element's gain.

The embodiment of the utility model provides an in, optional, first lead to the piece and the second leads to the piece can choose for use thickness to be 0.2 mm's epoxy board to be favorable to reducing manufacturing cost.

The embodiment of the utility model provides an in, it is optional, the merit divides the ware and can be connected through the coaxial line with each radiating element, is favorable to reducing the feed loss.

The embodiment of the utility model provides an in, optional, turn into the oscillator and turn into the oscillator for the double polarization to, the double polarization turns into the oscillator and adopts vector stack on vertical and the horizontal direction to form 45 polarization. Specifically, the radiation unit adopts a dual-polarization folded dipole form, the folded dipole corresponds to one wavelength (1/2 wavelengths are used as dipoles in the prior art) during resonance, the folded dipole utilizes vector superposition in two vertical and horizontal directions to form polarization of +/-45 degrees, and the aperture of the antenna unit of the folded dipole is about 1.4 times of that of the dipole, so that the unit is larger, and the aperture of the folded dipole can be increased. Further optionally, the substrate of the dual-polarized folded oscillator can be made of a PCB plate with a dielectric constant of 2.2, and the aperture of the folded oscillator can be further increased by reducing the dielectric constant.

In the embodiment of the present invention, optionally, as shown in fig. 1, the edge of the reflection plate 200 is turned upwards relative to the plane where the reflection plate 200 is located, so as to form the surrounding edge 210. The arrangement of the surrounding edge is beneficial to further improving the gain of the high-gain WLAN antenna.

In some embodiments of the present invention, as shown in fig. 1, the radiation units 100 are arranged in a 2 × 2 matrix and mounted on the reflection plate 200.

Further, as shown in fig. 2, the power divider 300 includes two power dividing units 310, and each power dividing unit 310 is provided with one input terminal 315 and four output terminals, where:

the first output terminal 311, the second output terminal 312 and the input terminal 315 are disposed on one side edge of the power divider 300, the third output terminal 313 and the fourth output terminal 314 are disposed on the other side edge of the power divider 300,

the first output terminal 311 is connected to the third output terminal 313 through a first microstrip line 316,

the second output end 312 and the fourth output end 314 are connected by a second microstrip line 317,

a third microstrip line 319 is arranged between the first microstrip line 316 and the second microstrip line 317,

the input terminal 315 is connected to the third microstrip line 319 via a fourth microstrip line 318.

In this embodiment, the power divider is divided into four parts, and corresponds to the arrangement of the radiation units.

Further, as shown in fig. 2, the first microstrip line 316, the second microstrip line 317, the third microstrip line 319 and the fourth microstrip line 318 are linear. It can be understood that the microstrip lines are arranged in an H-shaped structure, which is beneficial to reducing the axes of the microstrip lines, thereby being beneficial to reducing the feed loss.

In some embodiments of the present invention, the high-gain WLAN antenna further includes a coaxial line, wherein the metal pillar is grounded and forms a current loop with an outer conductor of the coaxial line to realize balanced feeding.

Further, the length of the metal post may be 1/4 operating wavelength of the radiating element, and the metal post is grounded and forms a current loop with the coaxial line outer conductor, which is 1/2 operating wavelength of the radiating element, further facilitating balanced feeding.

Still further, the radiating unit further comprises a PCB bottom plate, the PCB bottom plate is installed between the metal column and the reflection plate, and the metal column and the coaxial line are soldered on the PCB bottom plate.

As shown in fig. 3, for the utility model discloses high-gain WLAN antenna tests result of gain, it is visible, the utility model discloses the high-gain WLAN antenna of embodiment reaches 15dBi at 5150MHz to 5850MHz frequency channel, gain, and partial frequency point reaches 16dBi, compares the gain of the WLAN antenna among the prior art and generally is 14dBi, the embodiment of the utility model has the advantage.

Finally, it should be noted that: the disclosure of the high-gain WLAN antenna disclosed in the embodiments of the present invention is only a preferred embodiment of the present invention, and is only for illustrating the technical solution of the present invention, not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A high-gain WLAN antenna is characterized by comprising a reflecting plate, a power divider and a plurality of radiating elements, wherein:

the radiation unit comprises a first guide sheet, a second guide sheet and a folded vibrator which are sequentially arranged from top to bottom, and also comprises a metal column,

the power divider is arranged on the other side of the reflecting plate.

2. The high gain WLAN antenna of claim 1, wherein the radiation units are arranged in a 2 x 2 matrix and mounted on the reflection plate.

3. The high-gain WLAN antenna of claim 2, wherein the power divider comprises two power dividing units, and the power dividing units are provided with one input end and four output ends, wherein:

4. The high-gain WLAN antenna according to claim 3, wherein the first microstrip line, the second microstrip line, the third microstrip line, and the fourth microstrip line are linear.

5. The high gain WLAN antenna according to claim 1, further comprising a coaxial line, wherein,

6. The high gain WLAN antenna according to claim 5, wherein the radiating element further includes a PCB bottom plate installed between the metal post and the reflection plate, and wherein the metal post and the coaxial line are soldered on the PCB bottom plate.

7. The high gain WLAN antenna according to any one of claims 1 to 6, wherein the edge of the reflector is folded upward relative to the plane of the reflector to form a surrounding edge.

8. The high-gain WLAN antenna according to any one of claims 1 to 6, wherein the folded dipole is a dual-polarized folded dipole, and the dual-polarized folded dipole forms ± 45 ° polarization by vector superposition in vertical and horizontal directions.