CN211980891U

CN211980891U - Dual-polarized array antenna

Info

Publication number: CN211980891U
Application number: CN202020025336.4U
Authority: CN
Inventors: 袁裕深
Original assignee: Dongguan Xinsheng Electronic Co ltd
Current assignee: Dongguan Xinsheng Electronic Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-11-20
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a dual polarization array antenna contains PCB, PCB openly is provided with a plurality of radiating element, and first polarization feed network and second polarization feed network are carved with to the reverse side seal, first polarization feed network, second polarization feed network be "ten" font quadrature, PCB openly one side still is provided with the plane of reflection, and the "H" shape radiating element of adoption possesses high gain and high efficiency, and every radiating element all is two balun structures, possesses better impedance bandwidth and radiation bandwidth, and the plane "ten" font symmetric array of adoption simultaneously, the wave beam bandwidth of every polarization is unanimous, through the jump-connection strip line two pairs of feed network separation, guarantees the independence of every pair of feed network.

Description

Dual-polarized array antenna

Technical Field

The utility model relates to the field of communication, specifically a dual polarization array antenna.

Background

With the development of networks and communication technologies, wireless local area networks have penetrated into every corner of every household, and WiFi has gained unprecedented favor by its unique advantages of high speed, convenience, and low cost. Wifi hot spot products under the application of the technology are distributed in the whole city, and stable and smooth network experience is provided for the masses.

The utility model provides a dual polarization array antenna for wifi focus product when guaranteeing the antenna high gain, has increased another input port, has expanded wireless network's capacity and radio signal interference killing feature.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dual polarization array antenna to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a dual-polarized planar array antenna comprises a PCB, wherein a plurality of radiating units are arranged on the front side of the PCB, a first polarized feed network and a second polarized feed network are printed on the back side of the PCB, the first polarized feed network and the second polarized feed network are orthogonal in a cross shape, and a reflecting surface is further arranged on one side of the front side of the PCB.

As a further aspect of the present invention: the PCB is a double-sided low-loss copper-clad plate.

As a further aspect of the present invention: the radiating units are H-shaped, are symmetrically distributed on four sides of the PCB by taking the PCB as the center, are symmetrical in pairs, are provided with double baluns, and are composed of a pair of half-wave dipoles, each pair of H-shaped radiating units forms a pair of antenna arrays, and the two arrays are mutually orthogonal to form two polarized outputs.

As a further aspect of the present invention: the first polarization feed network comprises a pair of bi-directional coupled feed strip lines; the specific type of the second polarization feed network is not limited, and in this embodiment, preferably, the second polarization feed network includes a first feed strip line and a second feed strip line.

As a further aspect of the present invention: the front surface of the PCB is provided with a jumper connection strip line, and the jumper connection strip line is provided with a plurality of metalized holes; the second feed strip line is connected with the jumper connection strip line through a metalized hole, and the two secondary feed networks are mutually orthogonal.

As a further aspect of the present invention: and the bidirectional coupling feed strip line is provided with a reactance adjusting branch section.

Compared with the prior art, the beneficial effects of the utility model are that:

the adopted H-shaped radiating elements have high gain and high efficiency, each radiating element has a double balun structure and has better impedance bandwidth and radiation bandwidth, meanwhile, the adopted planar cross-shaped symmetrical array has consistent wave beam bandwidth of each polarization, and the two pairs of feed networks are separated by a jumper connection strip line, so that the independence of each pair of feed networks is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a dual-polarized array antenna.

Fig. 2 is a schematic diagram of a front structure of a dual-polarized array antenna.

Fig. 3 is a schematic structural diagram of the reverse side of the dual-polarized array antenna.

In the figure: the antenna comprises a printed circuit board (1-PCB), a radiating unit (2), a first polarization feed network (3), a second polarization feed network (4), a reflecting surface (5), a double balun (8), a metalized hole (9), a jumper connection strip line (10), a bidirectional coupling feed strip line (11), a reactance adjusting branch (12), a first feed strip line (13) and a second feed strip line (14).

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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 work belong to the protection scope of the present invention.

It should be noted that, if there is a directional indication (such as up, down, left, right, front, and back) in the embodiment of the present invention, it is only used to explain the relative position relationship between the components, the motion situation, etc. in a certain specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if a description of "first", "second", etc. is referred to in the present invention, it is used for descriptive purposes only and not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example 1

Please refer to fig. 1-3, in an embodiment of the present invention, a dual-polarized planar array antenna includes a PCB1, the front side of the PCB1 is provided with a plurality of radiation units 2, the back side of the PCB1 is printed with a first polarized feed network 3 and a second polarized feed network 4, the first polarized feed network 3 and the second polarized feed network 4 are orthogonal in a cross shape, the front side of the PCB1 is further provided with a reflection surface 5, and the reflection surface 5 is a reflection surface of the radiation unit 2 and a reference ground of the first polarized feed network 3 and the second polarized feed network 4.

The specific material of the PCB1 is not limited, and in this embodiment, preferably, the PCB1 is a double-sided low-loss copper-clad plate.

The specific type of the radiation unit 2 is not limited, in this embodiment, preferably, the radiation unit 2 is "H" shaped, and is symmetrically distributed on four sides of the PCB1 with the PCB1 as a center, and is symmetric in pairs, each radiation unit 2 is provided with a dual balun 8, each "H" shaped radiation unit 2 is composed of a pair of half-wave dipoles, each pair of "H" shaped radiation units 2 forms a pair of antenna arrays, and each pair of arrays are orthogonal to each other to form two polarization outputs.

The specific type of the first polarization feed network 3 is not limited, and in this embodiment, preferably, the first polarization feed network 3 includes a pair of bidirectional coupling feed strip lines 11; the specific type of the second polarization feed network 4 is not limited, and in this embodiment, preferably, the second polarization feed network 4 includes a first feed strip line 13 and a second feed strip line 14.

In order to ensure the independence of each secondary feed network, a jumper connection strip line 10 is arranged on the front surface of the PCB1, and a plurality of metalized holes 9 are formed in the jumper connection strip line 10; the second feeding strip line 14 is connected with the jumper connection strip line 10 through the metalized hole 9, the two secondary feeding networks are mutually orthogonal, and in the orthogonal area, the two secondary feeding networks are separated through the jumper connection strip line 10, so that the independence of each secondary feeding network is ensured.

The utility model discloses a theory of operation is:

the radiation unit 2 of the antenna is engraved on the front surface of the dual-polarized planar array antenna PCB1, the feed network of the antenna is engraved on the back surface of the PCB1, and because the two secondary feed networks are mutually orthogonal, the two secondary feed networks are separated through the jumper connection strip line 10 in the orthogonal area, and the independence of each secondary feed network is ensured. Meanwhile, the radiation units are symmetrically and equally distributed by taking the PCB1 as the center, so that the wave beam bandwidth of each polarization is ensured to be the same, and the polarization of the antenna can be freely selected by a product.

Example 2

In order to facilitate the adjustment of the impedance of the radiation unit 2, the present embodiment is further improved on the basis of embodiment 1, and the improvement lies in that: the bidirectional coupling feeder strip line 11 is provided with a reactance adjustment stub 12.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A dual-polarized array antenna comprises a PCB (1), and is characterized in that the PCB (1) is a double-sided low-loss copper-clad plate, a plurality of radiation units (2) are arranged on the front surface of the PCB (1), the radiation units (2) are H-shaped, are symmetrically distributed on four side edges of the PCB (1) by taking the PCB (1) as a center, are symmetrical in pairs, each radiation unit (2) is provided with a double balun (8), each H-shaped radiation unit (2) consists of a pair of half-wave dipoles, each pair of H-shaped radiation units (2) forms a pair of antenna arrays, and each pair of arrays are mutually orthogonal to form two polarized outputs; the reverse side of the PCB (1) is printed with a first polarization feed network (3) and a second polarization feed network (4), the first polarization feed network (3) and the second polarization feed network (4) are orthogonal in a cross shape, and one side of the front side of the PCB (1) is also provided with a reflecting surface (5).

2. A dual polarized array antenna according to claim 1, characterized in that said first polarized feed network (3) comprises a pair of bidirectionally coupled feed strip lines (11); the second polarization feed network (4) comprises a first feed strip line (13) and a second feed strip line (14).

3. A dual polarized array antenna according to claim 2, wherein the front face of the PCB (1) is provided with a jumper strip line (10), and the jumper strip line (10) is provided with a plurality of metallized holes (9); the second feed strip line (14) is connected with the jumper connection strip line (10) through a metalized hole (9), and the two secondary feed networks are mutually orthogonal.

4. A dual polarized array antenna according to claim 2, characterized in that said bi-directionally coupled feedstrip line (11) is provided with reactance adjustment stubs (12).