CN112768922B - A 2×4 Broadband Beam Fixed Traveling-Wave Antenna - Google Patents

Abstract

The present invention provides a 2×4 broadband beam fixed array antenna, comprising an upper layer metal plate, a lower layer metal plate, a dielectric plate, a main feeder, 2 groups of general branches and 8 radiation patches, wherein: the upper layer metal plate and the lower layer metal plate Both the plate and the medium plate are rectangular plates, the upper metal plate is attached to the upper surface of the medium plate, and the lower metal plate is attached to the lower surface of the medium plate; the middle of the medium plate is opened with a In the middle layer, the main feeder, 2 groups of general branches and 8 radiation patches are all arranged in the middle layer, the main feeder is arranged along the length direction of the dielectric plate, and the 2 groups of general branches are respectively connected with the The main feeder is connected, the 2 groups of total branches respectively include 4 branches, a total of 8 branches of the 2 groups of total branches have a length difference, and the 8 branches of the 2 groups of total branches are connected by one radiation patch respectively. The invention realizes the radiation characteristic of beam fixed by the length difference of 2 groups of 8 branches in total.

Description

A 2×4 Broadband Beam Fixed Traveling-Wave Antenna

technical field

The invention relates to the field of communication antennas, and more particularly, to a 2×4 broadband beam fixed traveling wave antenna.

Background technique

The beam fixed antenna is a kind of antenna commonly used in wireless communication. It can radiate in a fixed direction and can be used in satellite communication and point-to-point communication. The traditional antennas that can realize beam fixation are series-fed array antennas. Some leaky wave antennas can also be regarded as series-fed array antennas, but there will be beam dispersion. The beam dispersion is reduced, and the beam fixation methods include coupled substrate integrated waveguide antennas, metamaterial antennas, and metasurface antennas. But the design of these antennas is more complicated.

The publication date is November 24, 2017, and the Chinese Patent Publication No. CN107394381A discloses a low-profile broadband circularly polarized array antenna based on stacked traveling wave antenna units, including: 3 sections of end-to-end printed on two dielectric plates. A circularly polarized antenna unit consisting of a metal layer on the side and a metallized through hole connecting two layers, a 2×2 antenna sub-array consisting of a metallized through-hole cavity and 4 antenna elements, and a 16-layer antenna consisting of metallized through holes All parallel feeding network, slot for coupling feeding between feeding layer and metal cavity and antenna, Grounded Coplanar Waveguide (GCPW) for testing and Substrate Integrated Waveguide (Substrate Integrated Waveguide, SIW), but the design of the antenna is more complicated.

SUMMARY OF THE INVENTION

The present invention provides a 2×4 broadband beam fixed traveling wave antenna, which realizes beam fixation and large bandwidth, and has the advantages of easy integration and easy processing.

For solving the above-mentioned technical problems, the technical scheme of the present invention is as follows:

A 2×4 broadband beam fixed array antenna, comprising an upper metal plate, a lower metal plate, a dielectric plate, a main feeder, 2 groups of general branches and 8 radiation patches, wherein:

The upper metal plate, the lower metal plate and the dielectric plate are all rectangular plates, the upper metal plate is attached to the upper surface of the dielectric plate, and the lower metal plate is attached to the lower surface of the dielectric plate ;

There is an intermediate layer in the middle of the dielectric plate, the main feeder, 2 groups of general branches and 8 radiation patches are all arranged in the intermediate layer, the main feeder is arranged along the length direction of the dielectric plate, the Two groups of general branches are respectively connected to the main feeder, the two groups of general branches respectively include 4 branches, a total of 8 branches of the 2 groups of general branches have length differences, and the total of 8 branches of the 2 groups of general branches are respectively connected with 1 radiant patch connection.

Preferably, the lengths of the upper metal plate, the lower metal plate and the dielectric plate are equal, the width of the dielectric plate is longer than the width of the upper metal plate and the lower metal plate, and the upper metal plate and the lower metal plate are along the medium One long edge of the board is aligned and attached, and the overlapping area of the upper metal plate, the lower metal plate and the dielectric plate is the overlapping area.

Preferably, the dielectric plate is a solid dielectric.

Preferably, the distance between the intermediate layer and the upper surface and the lower surface of the dielectric plate is equal.

Preferably, a total of 8 branches of the main feeder and 2 groups of total branches are located in the overlapping area at the position of the intermediate layer, and the eight radiating patches are located outside the overlapping area at the position of the intermediate layer .

Preferably, the length of the main feeder is equal to the lengths of the upper metal plate, the lower metal plate and the dielectric plate.

Preferably, the two groups of general branches are a first general branch and a second general branch, wherein the first general branch further includes a first wiring structure, and the four branches of the first general branch are connected to the first general branch through the first wiring structure. The main feeder is connected, wherein the second general branch further includes a second wiring structure, and the four branches of the second general branch are connected to the main feeder through the second wiring structure.

Preferably, the first wiring structure includes four sections. The first section starts from the main feeder and extends along the width direction of the dielectric board; the second section starts from the end point of the first section and extends along the width of the dielectric board. The length direction extends 8ΔL mm; the third section is from the end point of the second section, and extends Δy mm along the width direction of the dielectric plate and the extension direction is the same as the extension direction of the first section; the fourth section is from the third section. The starting point extends along the length direction of the medium plate and the extending direction is opposite to that of the second segment; the 4 divisions of the first general branch are connected to the fourth segment at an interval of L millimeters;

The second wiring structure includes four sections, the first section starts from the main feeder and extends along the width direction of the dielectric board; the second section starts from the end point of the first section and extends along the length direction of the dielectric board 4ΔL mm; the third section starts from the end point of the second section, and extends Δy mm along the width direction of the medium plate and extends in the same direction as the first section; the fourth section starts from the end point of the third section along the The length direction of the dielectric plate extends and the extending direction is opposite to that of the second segment; the four branches of the second general branch are connected to the fourth segment at equal intervals of L millimeters;

The length of the first segment of the second wiring structure is Δy mm longer than the length of the first segment of the first wiring structure.

Preferably, the four branches of the first general branch are all L-shaped branches, one side of the L-shaped branch is connected to the fourth segment of the first wiring structure, and the length of one side of the L-shaped branch increases sequentially Δy mm; the other side of the L-shaped branch is connected to the radiation patch, the other side of the L-shaped branch is successively reduced by ΔL mm, and the longest length of the other side of the L-shaped branch is 3ΔL mm.

Preferably, the four branches of the second general branch are all L-shaped branches, one side of the L-shaped branch is connected to the fourth segment of the first wiring structure, and the length of one side of the L-shaped branch increases sequentially Δy mm; the other side of the L-shaped branch is connected to the radiation patch, the other side of the L-shaped branch is successively reduced by ΔL mm, and the longest length of the other side of the L-shaped branch is 3ΔL mm.

Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

The invention realizes the radiation characteristic of beam fixed by the length difference of 2 groups of 8 branches, meanwhile, the structure of the invention can adopt the technology of printed circuit board, and has the characteristics of easy integration and easy processing.

Description of drawings

1 is a perspective view of an embodiment;

Figure 2 is a top view of the embodiment;

Figure 3 is a side view of the embodiment;

FIG. 4 is a reflection coefficient and gain diagram of an embodiment;

FIG. 5 is a radiation pattern of an embodiment.

Description of reference numbers:

label name label name 1 upper metal plate 2 lower metal plate 3 Media board 4 main feeder 5 branch 5 6 Radiant Patch 6 W_g Media board width L_g Media Plate Length W_m1(mm) Feeder width ε_r Dielectric Plate Dielectric Constant L_p Patch length W_p Patch width Δy(mm) Branch 5 height difference L(mm) Distance between branches 5 ΔL(mm) Branch 5 length difference W_m(mm) Branch 5 width g(mm) The distance between the patch and the metal plate h(mm) single layer thickness L₁(mm) Patch and feeder distance

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent;

In order to better illustrate this embodiment, some parts of the drawings are omitted, enlarged or reduced, which do not represent the size of the actual product;

It will be understood by those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for the purpose of description, and should not be construed as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

Example 1

This embodiment provides a 2×4 broadband beam fixed array antenna, as shown in FIG. 1 to FIG. 3 , including an upper metal plate 1, a lower metal plate 2, a dielectric plate 3, a main feeder 4, 2 groups of general branches, and 8 radiation stickers Sheet 6, where:

The upper metal plate 1, the lower metal plate 2 and the dielectric plate 3 are all rectangular plates, the upper metal plate 1 is attached to the upper surface of the dielectric plate 3, and the lower metal plate 2 is attached to the upper surface of the dielectric plate 3. the lower surface of the dielectric plate 3;

The dielectric plate 3 has an intermediate layer in the middle. The main feeder 4 , the 2 groups of general branches and the 8 radiation patches 6 are all arranged in the intermediate layer. The main feeder 4 is along the length of the dielectric plate 3 . Direction setting, the two groups of general branches are respectively connected to the main feeder 4, the two groups of general branches respectively include four branches 5, the two groups of total branches have a total of eight branches 5 with length difference, the two groups of general branches A total of 8 branches 5 are connected to one radiation patch 6 respectively. In this embodiment, the length and width of the radiation patch 6 are 8 mm and 2 mm.

The lengths of the upper metal plate 1, the lower metal plate 2 and the dielectric plate 3 are equal, and the width of the dielectric plate 3 is longer than the width of the upper metal plate 1 and the lower metal plate 2. The upper metal plate 1 and the lower metal plate 2 Align and fit along one long edge of the dielectric plate 3 , and the overlapping area of the upper metal plate 1 , the lower metal plate 2 and the dielectric plate 3 is the overlapping area. In this embodiment, the length of the upper metal plate 1 and the lower metal plate 2 is 90 mm, and the length, width and thickness of the dielectric plate 3 are respectively 90 mm, 50 mm and 1 mm.

The dielectric plate 3 is a solid dielectric.

The intermediate layer is equally spaced from the upper surface and the lower surface of the dielectric plate 3 .

The main feeder 4 and the 2 groups of total branches, a total of 8 branches 5 are located in the overlapping area at the position of the intermediate layer, and the 8 radiation patches 6 are located outside the overlapping area at the position of the intermediate layer .

The length of the main feeder 4 is equal to the lengths of the upper metal plate 1 , the lower metal plate 2 and the dielectric plate 3 .

The two groups of general branches are a first general branch and a second general branch, wherein the first general branch further includes a first wiring structure, and the four branches 5 of the first general branch communicate with the first general branch through the first wiring structure. The main feeder 4 is connected, wherein the second general branch further includes a second wiring structure, and the four branches 5 of the second general branch are connected to the main feeder 4 through the second wiring structure.

The first wiring structure includes four sections. The first section starts from the main feeder 4 and extends along the width direction of the dielectric board 3 ; the second section starts from the end point of the first section and extends along the width of the dielectric board 3 . The length direction extends 8ΔL mm; the third section is from the end point of the second section, and extends Δy mm along the width direction of the dielectric plate 3 and the extension direction is the same as the extension direction of the first section; the fourth section is from the third section. Starting from the end point, it extends along the length direction of the medium plate 3 and the extending direction is opposite to that of the second section; the 4 divisions of the first general branch are connected to the fourth section at an interval of L mm;

The second wiring structure includes four sections. The first section starts from the main feeder line 4 and extends along the width direction of the dielectric board 3 ; the second section starts from the end point of the first section and extends along the width of the dielectric board 3 . The length direction extends by 4ΔL mm; the third section starts from the end point of the second section, extends Δy mm along the width direction of the dielectric plate 3 and the extension direction is the same as the extension direction of the first section; the fourth section is from the third section. The end point extends along the length direction of the medium plate 3 and the extending direction is opposite to the second segment; the 4 branches 5 of the second general branch are connected to the fourth segment at equal intervals of L millimeters;

The length of the first segment of the second wiring structure is Δy mm longer than the length of the first segment of the first wiring structure.

The four branches 5 of the first general branch are all L-shaped branches 5, one side of the L-shaped branch 5 is connected to the fourth section of the first wiring structure, and the lengths of one side of the L-shaped branch 5 are sequentially Increase Δy mm; the other side of the L-shaped branch 5 is connected to the radiation patch 6 , the other side of the L-shaped branch 5 decreases by ΔL mm in turn, and the longest length of the other side of the L-shaped branch 5 is 3ΔL mm.

The four branches 5 of the second general branch are all L-shaped branches 5 , one side of the L-shaped branch 5 is connected to the fourth section of the first wiring structure, and the lengths of one side of the L-shaped branch 5 are sequentially Increase Δy mm; the other side of the L-shaped branch 5 is connected to the radiation patch 6 , the other side of the L-shaped branch 5 decreases by ΔL mm in turn, and the longest length of the other side of the L-shaped branch 5 is 3ΔL mm. In this embodiment, ΔL is 3.3, Δy is 0.8, the width of the branch 5 is 0.3 mm, and the width of the main feeder 4 is 3 mm.

In this embodiment, a printed circuit board (PCB) technology is used to manufacture the antenna, which has low cost and low assembly difficulty.

In the specific implementation process, the antenna is assembled on a dielectric layer with a dielectric constant of 2.2, a loss tangent of 0.0009, a length of 90mm, a width of 50mm, and a total thickness of 1mm; the length of the upper metal plate 11 and the lower metal plate 22 is 90mm, branch 5, feeder 4 and patch are in the middle layer of the antenna, the distance between branches 5 is 6.7mm, the height difference between branches 5 is 0.8mm, the length difference between branches 5 is 3.3mm, and the width of branch 5 is 0.3mm, feeder 4 is 90mm long and 3mm wide.

Figure 4 shows the reflection coefficient and gain coefficient of the present invention. It can be seen from Figure 4 that the antenna impedance bandwidth (|S11|<-10dB) is about 20%, the bandwidth is large, and the maximum gain is 5.9dBi.

FIG. 5 is the radiation pattern of the present invention working at 9.0, 10.0, and 11.0 GHz. It can be seen that the pattern of the antenna is stable and the beam is fixed.

The same or similar reference numbers correspond to the same or similar parts;

The terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on this patent;

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (8)

1. The utility model provides a fixed travelling wave antenna of 2 x 4 broadband beam which characterized in that, includes upper metal sheet, lower floor metal sheet, dielectric plate, main feeder, 2 groups total branches and 8 radiation patches, wherein:

the upper metal plate, the lower metal plate and the dielectric plate are rectangular plates, the upper metal plate is attached to the upper surface of the dielectric plate, and the lower metal plate is attached to the lower surface of the dielectric plate;

the middle of the dielectric slab is provided with a middle layer, the main feeder, 2 groups of main branches and 8 radiation patches are all arranged in the middle layer, the main feeder is arranged along the length direction of the dielectric slab, the 2 groups of main branches are respectively connected with the main feeder, the 2 groups of main branches respectively comprise 4 branches, the 2 groups of main branches totally comprise 8 branches with length difference, and the 2 groups of main branches totally comprise 8 branches which are respectively connected with 1 radiation patch;

the lengths of the upper metal plate, the lower metal plate and the dielectric plate are equal, the width of the dielectric plate is longer than the widths of the upper metal plate and the lower metal plate, the upper metal plate and the lower metal plate are aligned and attached along the long edge of one side of the dielectric plate, and the overlapped area of the upper metal plate, the lower metal plate and the dielectric plate is an overlapped area;

the main feeder line and 2 groups of total branches have 8 branches which are positioned in the overlapping area at the position of the middle layer, and the 8 radiating patches are positioned outside the overlapping area at the position of the middle layer.

2. The 2 x 4 broadband beam fixed traveling wave antenna according to claim 1, wherein the dielectric plate is a solid dielectric.

3. The 2 x 4 broadband beam fixed traveling-wave antenna according to claim 2, wherein the intermediate layer is equidistant from the upper surface and the lower surface of the dielectric plate.

4. The 2 x 4 broadband beam fixed traveling-wave antenna according to claim 3, wherein the length of the main feeder is equal to the lengths of the upper metal plate, the lower metal plate, and the dielectric plate.

5. The 2 x 4 wideband beam fixed traveling wave antenna according to claim 4 wherein the 2 groups of total branches are a first total branch and a second total branch, wherein the first total branch further comprises a first wiring structure through which 4 branches of the first total branch are connected to the main feed line, wherein the second total branch further comprises a second wiring structure through which 4 branches of the second total branch are connected to the main feed line.

6. The 2 x 4 broadband beam fixed traveling-wave antenna according to claim 5, wherein the first connection structure includes four segments, a first segment extending from a main feeder line in a width direction of the dielectric plate; the second section extends for 8 delta L millimeters from the terminal point of the first section along the length direction of the dielectric slab; the third section extends for delta y millimeters along the width direction of the dielectric slab from the terminal point of the second section, and the extending direction is the same as that of the first section; the fourth section extends from the end point of the third section along the length direction of the dielectric slab and the extending direction of the fourth section is opposite to that of the second section; the 4 branches of the first total branch are connected to the fourth section at intervals of L millimeters;

the second wiring structure comprises four sections, wherein the first section extends from the main feeder line along the width direction of the dielectric slab; the second section extends for 4 delta L millimeters from the terminal point of the first section along the length direction of the dielectric slab; the third section extends for delta y millimeters along the width direction of the dielectric slab from the terminal point of the second section, and the extending direction is the same as that of the first section; the fourth section extends from the end point of the third section along the length direction of the dielectric slab and the extending direction of the fourth section is opposite to that of the second section; the 4 branches of the second total branch are connected to the fourth section at equal intervals of L millimeters;

the length of the first segment of the second wiring structure is longer than the length of the first segment of the first wiring structure by ay millimeters.

7. The 2 x 4 wideband beam fixed traveling-wave antenna according to claim 6, wherein the 4 branches of the first total branch comprise 3 branches

Type branch and 1

A type branch, one side of the 4 branches and the first wiringThe fourth section of the structure is connected, and the lengths of the sides of the 4 branches of the first total branch, which are connected with the fourth section of the first wiring structure, are sequentially increased by delta y millimeters; the other sides of the 4 branches of the first total branch are connected with the radiating patches, and the other sides of the 3 branches of the first total branch are connected with the radiating patches

The middle edges of the type branches are sequentially reduced by Delta L millimeter, and 3 of the first total branches

The longest length of the middle side of the profile branch is 3 al millimeters.

8. The 2 x 4 wideband beam fixed traveling-wave antenna according to claim 7, wherein the 4 branches of the second total branch comprise 3 branches

Type branch and 1

The length of one side of the 4 branches of the second total branch connected with the fourth section of the first wiring structure is increased by delta y millimeters in sequence; the other sides of the 4 branches of the second main branch are connected with the radiation patch, and the other sides of the 3 branches of the second main branch are connected with the radiation patch

The middle edge of the profile branch is successively reduced by DeltaL mm, and the number of the second total branch is 3

The longest length of the middle side of the profile branch is 3 al millimeters.

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