CN216357496U

CN216357496U - Easy-to-integrate end-fire broadband phased array antenna

Info

Publication number: CN216357496U
Application number: CN202123060561.5U
Authority: CN
Inventors: 刘雪飞; 康育贵; 张霖; 狄隽
Original assignee: Aerospace Science And Technology Microsystem Technology Co ltd
Current assignee: Aerospace Science And Technology Microsystem Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-19
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses an easily-integrated end-fire broadband phased-array antenna, which comprises a metal shell and a plurality of layers of PCBs (printed circuit boards) which are locally installed in the metal shell, wherein each layer of PCB comprises a surface copper-clad layer and at least one copper-clad intermediate layer; the multilayer PCB is also provided with second-class metallized holes, the second-class metallized holes are positioned between two rows of the first-class metallized holes, the second-class metallized holes are connected with the surface copper-clad layer of the multilayer PCB, and the second-class metallized holes are not connected with the copper-clad intermediate layer; the first type of metalized hole and the first type of metalized hole are positioned in the metal shell. The utility model has wide bandwidth, simple structure and high integration level.

Description

Easy-to-integrate end-fire broadband phased array antenna

Technical Field

The utility model relates to the technical field of antennas, in particular to a phased array antenna.

Background

The position of the antenna in the whole wireless communication system is very important, along with the continuous development of the modern wireless communication technology, people have higher and higher requirements on the performance of the antenna, along with the development of miniaturization and modularization of a radio frequency micro system, the integration level of the antenna is required to be higher and higher, and particularly the antenna is easy to integrate. In recent years, as the frequency of a phased array is gradually increased to a high frequency, an end-fire antenna of a high frequency wide band is a relatively large number of antenna structures under study.

The antenna array of the high-frequency brick type phased array at present has the problems of difficult processing, low integration level, narrow bandwidth and the like.

Disclosure of Invention

In order to solve the problems, the utility model provides an end-fire broadband phased array antenna easy to integrate, which is wide in bandwidth, simple in structure and high in integration level.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the utility model discloses an easy-integration end-fire broadband phased-array antenna, which comprises a metal shell and a plurality of layers of PCB boards partially arranged in the metal shell, wherein each layer of PCB board comprises a surface copper-coated layer and at least one copper-coated intermediate layer;

the multilayer PCB is also provided with second-class metallized holes, the second-class metallized holes are positioned between two columns of the first-class metallized holes, the second-class metallized holes are connected with the surface copper-clad layer of the multilayer PCB, and the second-class metallized holes are not connected with the copper-clad intermediate layer;

the first type of metalized hole and the second type of metalized hole are both positioned in the metal shell.

Furthermore, the multilayer PCB is also provided with third-class metallization holes, the third-class metallization holes are connected with the copper-clad middle layer and any one copper-clad layer on the surface, the third-class metallization holes are arranged in pairs, the third-class metallization holes are positioned between two rows of the first-class metallization holes, and the third-class metallization holes are positioned in the metal shell.

Preferably, there are several pairs of said third type of metallized holes.

Preferably, all the third type of metallized holes are connected to the same surface copper-clad layer.

Preferably, the multilayer PCB comprises a copper-clad intermediate layer, and a prepreg layer is arranged between the copper-clad intermediate layer and the surface copper-clad layer.

Preferably, the metal shell is rectangular, one lateral side of the metal shell is provided with an opening, the multilayer PCB board passes through the opening, and the lateral dimension of the part of the multilayer PCB board outside the metal shell is smaller than that of the part of the multilayer PCB board inside the metal shell.

Preferably, the inner walls of the two longitudinal side walls of the metal shell are provided with longitudinal clamping grooves, and the multilayer PCB is clamped on the longitudinal clamping grooves.

Preferably, the opening does not penetrate through the bottom surface and the top surface of the metal case.

Preferably, the part of the multilayer PCB board located outside the metal shell is rectangular.

The principle of the utility model is as follows: when the utility model is cascaded with the lower end, the radio frequency signal is transmitted to the antenna end on the PCB board in a SIW integrated waveguide mode, and then the radio frequency signal is fed by the metallized through hole, so the transmission loss is small.

The utility model has the following beneficial effects:

1. the utility model adopts the traditional PCB board and metal shell to manufacture, has mature process, simple structure and low cost.

2. The number of layers of the PCB board can be adjusted according to actual needs, and is not limited to the number of layers shown in the figure; the antenna can be connected with the rear end through the SIW integrated waveguide, and the loss between the connection is small.

3. The utility model can realize wider bandwidth, obtain stable gain in the working frequency band and meet the requirement of phased array.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a left side sectional view of fig. 1.

Fig. 3 is a front sectional view of fig. 1.

Fig. 4 is a graph of the active standing wave ratio of the present invention.

Fig. 5 is a gain curve diagram of the present invention.

Fig. 6 is an antenna pattern of the present invention at a frequency of 80 GHz.

Fig. 7 is an antenna pattern of the present invention at a frequency of 84 GHz.

Fig. 8 is an antenna pattern of the present invention at a frequency of 88 GHz.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the embodiment discloses an end-fire broadband phased-array antenna easy to integrate, which includes a metal housing 2 and a multilayer PCB 1 partially installed in the metal housing, where the multilayer PCB 1 includes a surface copper-clad layer 3 and at least one copper-clad intermediate layer 4, the multilayer PCB 1 is provided with first-type metallization holes 5, there are two rows of the first-type metallization holes 5, the two rows of the first-type metallization holes 5 are longitudinally arranged, each row of the first-type metallization holes 5 has a plurality of first-type metallization holes, and the first-type metallization holes 5 are connected to all the copper-clad layers of the multilayer PCB 1; the multilayer PCB board 1 is also provided with second-class metallized holes 6, the second-class metallized holes 6 are positioned between two rows of the first-class metallized holes 5, the second-class metallized holes 6 are connected with the surface copper-clad layer 3 of the multilayer PCB board, and the second-class metallized holes 6 are not connected with the copper-clad intermediate layer 4; the first type of metallized hole 5 and the second type of metallized hole 6 are both positioned in the metal shell.

Radio frequency signals are transmitted to an antenna end on the multilayer PCB board 1 in a SIW integrated waveguide mode and then fed through the second type of metallized holes 6, so that transmission loss is small.

Example 2

As shown in fig. 2 and 3, the present embodiment is a preferred embodiment of embodiment 1, and specifically:

the multilayer PCB (printed circuit board) 1 is also provided with third-class metalized holes 7, the third-class metalized holes 7 are connected with the copper-clad middle layer 4 and any one copper-clad layer 3 on the surface, the third-class metalized holes 7 are arranged in pairs, the third-class metalized holes 7 are positioned between two rows of the first-class metalized holes 5, and the third-class metalized holes 7 are positioned in the metal shell; the third type of metallized holes 7 play a role in adjusting impedance matching, and the third type of metallized holes 7 can have a plurality of pairs as required.

As a preferred example, all the third type metallized holes 7 are connected to the same surface copper-clad layer 3.

Example 3

On the basis of

embodiment

1 or 2, this embodiment discloses a specific example, which is specifically as follows:

the multilayer PCB 1 only comprises an intermediate layer 4 which comprises copper, and a prepreg layer 8 is arranged between the intermediate layer 4 which comprises copper and the surface copper-clad layer 3.

The metal shell 2 is rectangular, one transverse side face of the metal shell 2 is provided with an opening, the multilayer PCB 1 penetrates through the opening, the opening does not penetrate through the bottom face and the top face of the metal shell, and the transverse dimension of the part, located outside the metal shell 2, of the multilayer PCB 1 is smaller than that of the part, located inside the metal shell 2, of the multilayer PCB; the part of the multilayer PCB positioned outside the metal shell is rectangular.

The inner walls of two longitudinal side walls of the metal shell 2 are provided with longitudinal clamping grooves 9, and the multilayer PCB 1 is clamped on the longitudinal clamping grooves 9.

Example 4

In this embodiment, simulation is performed on the basis of embodiment 3 by using the master-slave boundary, and the phased array design is performed for subsequent convenience, and the simulation results are shown in fig. 4 to 8, as can be seen from fig. 4 to 8.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. An easily integrated end-fire broadband phased array antenna, characterized in that: the multilayer PCB comprises a metal shell and a plurality of layers of PCBs (printed circuit boards) which are locally installed in the metal shell, wherein each layer of PCB comprises a surface copper-clad layer and at least one copper-clad intermediate layer, each layer of PCB is provided with a plurality of first-class metalized holes, two rows of the first-class metalized holes are longitudinally arranged, and each row of the first-class metalized holes is connected with all the copper-clad layers of the multilayer PCB;

2. An easy-to-integrate end-fire broadband phased array antenna as claimed in claim 1, wherein: the multilayer PCB is also provided with third-class metalized holes, the third-class metalized holes are connected with the copper-clad middle layer and any one copper-clad layer on the surface, the third-class metalized holes are arranged in pairs, the third-class metalized holes are positioned between two rows of the first-class metalized holes, and the third-class metalized holes are positioned in the metal shell.

3. An easy-to-integrate end-fire broadband phased array antenna as claimed in claim 2, wherein: there are several pairs of said third type of metallized holes.

4. An easy-to-integrate end-fire broadband phased array antenna as claimed in claim 3, wherein: all the third type metallized holes are connected with the same surface copper-clad layer.

5. An easy-to-integrate end-fire broadband phased array antenna according to any of claims 1 to 4, characterized in that: the multilayer PCB comprises a copper-clad middle layer, and a prepreg layer is arranged between the copper-clad middle layer and a surface copper-clad layer.

6. The easy-to-integrate end-fire broadband phased array antenna of claim 5, wherein: the metal shell is rectangular, an opening is formed in one transverse side face of the metal shell, the multilayer PCB penetrates through the opening, and the transverse size of the part, located outside the metal shell, of the multilayer PCB is smaller than that of the part, located inside the metal shell, of the multilayer PCB.

7. The easy-to-integrate end-fire broadband phased array antenna of claim 6, wherein: the inner walls of the two longitudinal side walls of the metal shell are provided with longitudinal clamping grooves, and the multilayer PCB is clamped on the longitudinal clamping grooves.

8. The easy-to-integrate end-fire broadband phased array antenna of claim 6, wherein: the opening does not penetrate through the bottom surface and the top surface of the metal shell.

9. The easy-to-integrate end-fire broadband phased array antenna of claim 6, wherein: the part of the multilayer PCB positioned outside the metal shell is rectangular.