CN219626884U

CN219626884U - Dual-circular polarization phased array antenna radiating element and array surface

Info

Publication number: CN219626884U
Application number: CN202223466804.XU
Authority: CN
Inventors: 张秀锋
Original assignee: Xi'an Tianan Electronic Technology Co ltd
Current assignee: Xi'an Tianan Electronic Technology Co ltd
Priority date: 2022-12-24
Filing date: 2022-12-24
Publication date: 2023-09-01
Anticipated expiration: 2032-12-24

Abstract

The dual-circularly polarized phased array antenna radiating element array surface comprises a coupling radiating layer, a first dielectric layer, a feed radiating layer, a second dielectric layer, a first metal ground, a third dielectric layer, a dual-circularly polarized network, a fourth dielectric layer and a second metal ground; the coupling radiation layer, the first dielectric layer, the feed radiation layer, the second dielectric layer, the first metal ground, the third dielectric layer, the double circular polarization network, the fourth dielectric layer and the second metal ground are sequentially arranged from top to bottom to form a strip line structure. The utility model has the characteristic of double circular polarization at the same time. The utility model adopts a miniaturized 3dB bridge to form a double-circular polarization network, and the double-circular polarization network outputs excitation signals with the phase difference of +/-90 degrees respectively through different input ports of the double-circular polarization network, so that the antenna has the capability of radiating left-hand circular polarization electromagnetic waves and right-hand circular polarization electromagnetic waves to space simultaneously.

Description

Dual-circular polarization phased array antenna radiating element and array surface

Technical Field

The utility model belongs to the field of antennas, and relates to a dual circularly polarized phased array antenna radiating element and an array surface.

Background

With the rapid development of modern wireless communication, the communication system puts higher demands on the volume, cost and performance of the antenna. The dual-circularly polarized antenna can receive circularly polarized waves and linearly polarized waves in any polarization direction, has strong anti-interference and anti-attenuation capabilities, and has wide application prospects in mobile communication and satellite communication. So far, researchers have proposed a variety of antennas that achieve dual circularly polarized radiation. For example, the switching of excited left-handed circularly polarized (LHCP) radiation and right-handed circularly polarized (RHCP) radiation is realized based on the on-off of a diode, a four-feed double-circularly polarized antenna based on a wilkinson power divider and a loop bridge feed, and a double-circularly polarized antenna based on a cross slot coupling feed. However, these antennas have large size and narrow operating bandwidth, which is not conducive to miniaturization design, and it is difficult to meet the requirements of the communication system for broadband, miniaturization and low profile of the antennas.

Disclosure of Invention

The utility model aims to provide a dual circularly polarized phased array antenna radiating unit and an array surface, which are used for solving the problems that the size of an antenna is large, the working bandwidth is narrow, the miniaturization design is not facilitated, and the broadband, miniaturization and low profile requirements of a communication system on the antenna are difficult to meet.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a dual-circularly polarized phased array antenna radiating element comprises a coupling radiating layer, a first dielectric layer, a feed radiating layer, a second dielectric layer, a first metal ground, a third dielectric layer, a dual-circularly polarized network, a fourth dielectric layer and a second metal ground; the coupling radiation layer, the first dielectric layer, the feed radiation layer, the second dielectric layer, the first metal ground, the third dielectric layer, the double circular polarization network, the fourth dielectric layer and the second metal ground are sequentially arranged from top to bottom to form a strip line structure.

Furthermore, metallized blind holes are formed in the third dielectric layer and the fourth dielectric layer and are used for connecting the first metal ground and the second metal ground respectively.

Further, the coupling radiation layer and the feed radiation layer are circular patches with different radiuses.

Further, the coupling radiation layer is printed on the first dielectric layer, and the feed radiation layer is printed on the second dielectric layer.

Further, the double circularly polarized network is a 3dB bridge designed by a T-type equivalent method.

Further, the output phase difference of the dual circular polarization network is +/-90 degrees.

Further, the feed radiation layer and the double circularly polarized network are interconnected through the metallized blind holes.

An array surface comprises a plurality of uniformly arranged double circular polarization phased array antenna radiating units, and the array surface is formed by rectangular arrays 5*5.

Compared with the prior art, the utility model has the following technical effects:

the utility model has the characteristic of double circular polarization at the same time. The utility model adopts a miniaturized 3dB bridge to form a double-circular polarization network, and the double-circular polarization network outputs excitation signals with the phase difference of +/-90 degrees respectively through different input ports of the double-circular polarization network, so that the antenna has the capability of radiating left-hand circular polarization electromagnetic waves and right-hand circular polarization electromagnetic waves to space simultaneously.

The utility model has the characteristic of wide working frequency band. The double-layer patch is adopted to effectively widen the bandwidth, the feed radiation layer is used for radiating left-handed circularly polarized waves and right-handed circularly polarized waves to the space, and the coupling radiation layer is used for widening the bandwidth of the antenna and improving the gain.

The utility model has the characteristic of high isolation between units. According to the utility model, the coupling radiation layer, the first dielectric layer, the feed radiation layer, the second dielectric layer, the first metal ground, the third dielectric layer, the double circular polarization network, the fourth dielectric layer and the second metal ground are sequentially arranged from top to bottom to form a strip line structure, and meanwhile, the metalized blind holes are arranged on the periphery, so that the isolation performance among units can be effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a three-dimensional exploded view of a dual circularly polarized phased array antenna radiating element of the present utility model;

fig. 2 is a perspective view of a dual circularly polarized phased array antenna radiating element;

FIG. 3 is a top view of a miniaturized 3dB bridge type dual circularly polarized network;

the reference numerals are as follows:

1-a coupling radiation layer; 2-a first dielectric layer; 3-a feed radiation layer; 4-a second dielectric layer; 5-a first metal ground; 6-a third dielectric layer; 7-a dual circularly polarized network; 8-a fourth dielectric layer; 9-a second metal ground; 10-metallizing blind holes.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present utility model can be understood in detail, a more particular description of the utility model, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Also in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixedly connected, detachably connected or integrally connected: it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a dual circularly polarized phased array antenna radiating element and array plane includes: the coupling radiation layer 1, the first dielectric layer 2, the feed radiation layer 3, the second dielectric layer 4, the first metal ground 5, the third dielectric layer 6, the double circular polarization network 7, the fourth dielectric layer 8, the second metal ground and the metallized blind holes 10;

the coupling radiation layer, the first dielectric layer, the feed radiation layer, the second dielectric layer, the first metal ground, the third dielectric layer, the double circular polarization network, the fourth dielectric layer and the second metal ground are sequentially arranged from top to bottom to form a strip line structure, and meanwhile metallized blind holes are formed in the periphery and located in the third dielectric layer and the fourth dielectric layer to connect the first metal ground and the second metal ground.

As shown in fig. 2, the coupling radiation layer and the feeding radiation layer are circular patches with different radiuses and printed on the dielectric plate; the feed radiation layer is used for radiating left-handed circularly polarized waves and right-handed circularly polarized waves to the space, and the coupling radiation layer is used for widening the bandwidth of the antenna and improving the gain.

As shown in fig. 3, the dual circular polarization network is composed of miniaturized 3dB bridges, and the 3dB bridges designed by the T-type equivalent method can effectively expand the bandwidth and reduce the physical size; the miniaturized 3dB bridge is adopted to form a double-circular polarized network, and the double-circular polarized network outputs excitation signals with the phase difference of +/-90 degrees respectively through different input ports of the double-circular polarized network, so that the antenna has the capability of radiating left-hand circular polarized electromagnetic waves and right-hand circular polarized electromagnetic waves to space simultaneously.

The coupling radiation layer, the first dielectric layer, the feed radiation layer, the second dielectric layer, the first metal ground, the third dielectric layer, the double circular polarization network, the fourth dielectric layer and the second metal ground are sequentially arranged from top to bottom to form a strip line structure, and meanwhile, the metallized blind holes are formed in the periphery, so that the generation of surface waves can be effectively inhibited, and the isolation performance between units, the axial ratio under broadband wide-angle scanning and the standing wave characteristic are improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The dual-circularly polarized phased array antenna radiating unit is characterized by comprising a coupling radiating layer (1), a first dielectric layer (2), a feed radiating layer (3), a second dielectric layer (4), a first metal ground (5), a third dielectric layer (6), a dual-circularly polarized network (7), a fourth dielectric layer (8) and a second metal ground (9); the coupling radiation layer (1), the first dielectric layer (2), the feed radiation layer (3), the second dielectric layer (4), the first metal ground (5), the third dielectric layer (6), the double circular polarization network (7), the fourth dielectric layer (8) and the second metal ground (9) are sequentially arranged from top to bottom to form a strip line structure.

2. A dual circularly polarised phased array antenna radiating element according to claim 1, characterised in that the third dielectric layer (6) and the fourth dielectric layer (8) are provided with metallized blind holes (10) for connecting the first (5) and the second (9) metal ground, respectively.

3. A dual circularly polarised phased array antenna radiating element according to claim 1 characterised in that the coupling radiating layer (1) and the feed radiating layer (3) are circular patches of different radii.

4. A dual circularly polarised phased array antenna radiating element according to claim 3 characterised in that the coupling radiation layer (1) is printed on the first dielectric layer (2) and the feed radiation layer (3) is printed on the second dielectric layer (4).

5. A dual circularly polarised phased array antenna radiating element according to claim 1 characterised in that the dual circularly polarised network (7) is a 3dB bridge designed by the T-type equivalent method.

6. A dual circularly polarised phased array antenna radiating element according to claim 5 characterised in that the dual circularly polarised network (7) outputs are out of phase by ± 90 degrees.

7. A dual circularly polarised phased array antenna radiating element according to claim 1 characterised in that the feed radiating layer (3) and the dual circularly polarised network (7) are interconnected by metallised blind holes.

8. The array surface is characterized by comprising a plurality of uniformly arranged double circular polarization phased array antenna radiating units, and the array surface is formed by rectangular arrays 5*5.