CN112736447A - Broadband wave beam fixed array antenna - Google Patents
Broadband wave beam fixed array antenna Download PDFInfo
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- CN112736447A CN112736447A CN202011600135.3A CN202011600135A CN112736447A CN 112736447 A CN112736447 A CN 112736447A CN 202011600135 A CN202011600135 A CN 202011600135A CN 112736447 A CN112736447 A CN 112736447A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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Abstract
The invention provides a broadband beam fixed array antenna, which comprises an upper layer metal plate, a lower layer metal plate, a dielectric plate, a feed probe, a main feeder, 4 groups of total branches and 16 radiation patches, wherein: the upper metal plate, the dielectric plate and the lower metal plate are strip-shaped 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 line, 4 groups of main branches and 16 radiation patches are arranged on the middle layer, the main feeder line is connected with the 4 groups of main branches at equal intervals, the 4 groups of main branches respectively comprise 16 branches including 4 branches, the 16 branches are respectively connected with 1 radiation patch, and the 16 branches have length difference; and a feeding probe which is longitudinally arranged and penetrates through the medium is arranged at the starting position of the main feeder line. The invention realizes the radiation characteristic of beam fixation through the length difference of 4 groups of 16 branches.
Description
Technical Field
The invention relates to the field of communication antennas, in particular to a broadband beam fixed array antenna.
Background
A beam fixed antenna is an antenna commonly used in wireless communication, which can radiate in a fixed direction, and can be used in satellite communication and point-to-point communication. Conventional antennas capable of achieving beam fixing have a series-fed array antenna. The partial leaky-wave antenna can also be regarded as a series-fed array antenna, but the beam dispersion condition exists, the beam dispersion is reduced, and the method for realizing the beam fixation comprises a coupled substrate integrated waveguide antenna, a metamaterial antenna, a super-surface antenna and the like, but the design of the antennas is complex.
Chinese patent publication No. CN107394381A, published 24/11/2017, discloses a stacked traveling wave antenna unit-based low-profile broadband circularly polarized array antenna, comprising: the antenna comprises a circularly polarized antenna unit formed by 3 sections of metal layers printed on two sides of a dielectric plate in an end-to-end manner and metallized through holes connected with 2 layers, a 2 x 2 antenna subarray formed by a metallized through hole cavity and 4 antenna units, a 16-path fully parallel feed network formed by metallized through holes, a gap for coupling feed between a feed layer and a metal cavity and between antennas, and a switching structure between a Grounded Coplanar Waveguide (GCPW) for testing and a Substrate Integrated Waveguide (SIW), but the design of the antenna is complex.
Disclosure of Invention
The invention provides a broadband wave beam fixed array antenna, which realizes wave beam fixation and large bandwidth, and has the advantages of easy integration and easy processing.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a fixed array antenna of broadband beam, includes upper metal sheet, lower floor metal sheet, dielectric-slab, feed probe, main feeder, 4 groups total branches and 16 radiation patches, wherein:
the upper metal plate, the dielectric plate and the lower metal plate are strip-shaped 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 line, 4 groups of main branches and 16 radiation patches are arranged on the middle layer, the main feeder line is connected with the 4 groups of main branches at equal intervals, the 4 groups of main branches respectively comprise 16 branches including 4 branches, the 16 branches are respectively connected with 1 radiation patch, and the 16 branches have length difference;
and a feeding probe which is longitudinally arranged and penetrates through the medium is arranged at the starting position of the main feeder line.
Preferably, the main feeder line includes a tapered feeder line, a first equal-width feeder line, a second equal-width feeder line and a third equal-width feeder line, the tapered feeder line, the first equal-width feeder line, the second equal-width feeder line and the third equal-width feeder line are connected end to end, wherein the width of the tapered feeder line changes linearly, the maximum width of the tapered feeder line, the width of the first equal-width feeder line, the width of the second equal-width feeder line and the width of the third equal-width feeder line decrease sequentially, 1 group of total branches is connected at a connection point of the tapered feeder line and the first equal-width feeder line, 1 group of total branches is connected at a connection point of the first equal-width feeder line and the second equal-width feeder line, 1 group of total branches is connected at a connection point of the second equal-width feeder line and the third equal-width feeder line, and 1 group of total branches is connected at the.
Preferably, the 4 groups of total branches are a first total branch, a second total branch, a third total branch and a fourth total branch, wherein the first total branch further comprises a first wiring structure, and the 4 branches of the first total branch are connected with the main feeder line through the first wiring structure; the second main branch further comprises a second wiring structure, and 4 branches of the second main branch are connected with the main feeder line through the second wiring structure; the third main branch further comprises a third wiring structure, and 4 branches of the third main branch are connected with the main feeder line through the third wiring structure; the fourth main branch further comprises a fourth wiring structure, and 4 branches of the fourth main branch are connected with the main feeder line through the fourth wiring structure.
Preferably, the first connection structure includes four sections, where the first section extends from a connection position of the tapered feeder line and the first equal-width feeder line along a width direction of the dielectric slab; the second section extends for 12 delta L millimeters along the length direction of the dielectric slab from the terminal point of the first section; the third section extends from the end point of the second section by 3 delta y along the width direction of the dielectric plate1Mm and extending direction and the firstThe extension directions of the segments are the same; the fourth section extends from the end point of the third section along the length direction of the dielectric slab and has the extending direction opposite to that of the second section, the fourth section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail of each small section is connected with 1 branch;
the second wiring structure comprises four sections, wherein the first section starts from the connection position of the first equal-width feeder line and the second equal-width feeder line and extends along the width direction of the dielectric slab; 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 from the end point of the second section by 2 delta y along the width direction of the dielectric plate1Millimeter and the extension 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 has the extending direction opposite to that of the second section, the fourth section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail of each small section is connected with 1 branch;
the third wiring structure comprises four sections, wherein the first section starts from the connection position of the second equal-width feeder line and the third equal-width feeder line and extends 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 from the end point of the second section along the width direction of the dielectric plate by delta y1Millimeter and the extension 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 has the extending direction opposite to that of the second section, the fourth section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail of each small section is connected with 1 branch;
the fourth wiring structure comprises two sections, wherein the first section starts from the tail end of the third equal-width feeder line and extends along the width direction of the dielectric plate; the second section starts from the terminal point of the first section, extends along the length direction of the dielectric slab and has the extending direction opposite to that of the second section of the third wiring structure, the second section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and 1 branch is connected at the tail end of each small section;
the length of the first section of the first wiring structure is shorter than that of the second wiring structure by delta y1Millimeters, the length of the first section of the second wiring structure being shorter by Δ y than the length of the first section of the third wiring structure1Millimeters, the length of the first section of the third wiring structure is shorter than the length of the first section of the fourth wiring structure by delta y1And (4) millimeter.
Preferably, the widths of the first segment, the second segment and the third end of the first wiring structure are all increased linearly, the widths of the first segment, the second segment and the third end of the second wiring structure are all increased linearly, the widths of the first segment, the second segment and the third end of the third wiring structure are all increased linearly, and the width of the first segment of the fourth wiring structure is increased linearly.
Preferably, 16 branches of the 4 groups of total branches are all L-shaped branches, and for 4L-shaped branches of the same group of total branches, one side of each L-shaped branch is connected with the end of each small segment of the fourth segment of the first wiring structure, and the other side of each L-shaped branch is connected with 1 radiating patch.
Preferably, for 4L-shaped branches of the same group of total branches, one side of the L-shaped branch is sequentially increased by Δ y mm, the other side of the L-shaped branch is sequentially decreased by Δ L mm, and the longest length of the other side of the L-shaped branch is 3 Δ L mm.
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 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, 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 the 4 groups of total branches have 16 branches located in the overlapped area, and the 16 radiation patches are located outside the overlapped area.
Preferably, the dielectric plate is a solid dielectric.
Preferably, the distance between the middle layer and the upper surface and the distance between the middle layer and the lower surface of the dielectric plate are equal.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention realizes the radiation characteristic of beam fixation through the length difference of 4 groups of 16 branches, and simultaneously, the structure of the invention can adopt the printed circuit board technology and has the characteristics of easy integration and easy processing.
Drawings
FIG. 1 is a perspective view of an embodiment;
FIG. 2 is a top view of the embodiment;
FIG. 3 is a side view of the embodiment;
FIG. 4 is a reflection coefficient plot for an embodiment;
FIG. 5 is a graph of gain versus efficiency for an embodiment;
figure 6 is a radiation pattern for an embodiment operating at 10.0 GHz.
Figure 7 is a radiation pattern for an embodiment operating at 12.0 GHz.
Figure 8 is a radiation pattern for an embodiment operating at 14.0 GHz.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
2 | Upper |
| 3 | |
4 | |
| 5 | |
6 | Branch of |
| 7 | Main feeder | Lg | Length of dielectric plate |
| Wg | Width of dielectric plate | g | Distance between the patch and the dielectric plate |
| Lp | Patch length | Wp | Width of patch |
| Δy(mm) | Height difference of branch in group | L(mm) | Distance between branches |
| ΔL(mm) | Difference in branch length | Wm(mm) | Width of branch |
| W1(mm) | Distance between the patch and the dielectric plate | L2(mm) | Distance between group external feeder and main feeder |
| L1(mm) | Inter-group patch feeder distance | εr | Dielectric constant of dielectric plate |
| Δy1 | Height difference of branch outside the group | h(mm) | Thickness of single layer plate |
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The present embodiment provides a broadband beam fixed array antenna, as shown in fig. 1 to fig. 3, including an upper metal plate 2, a lower metal plate 3, a dielectric plate 4, a feeding probe 1, a main feeder 7, 4 groups of total branches, and 16 radiation patches 5, where:
the upper metal plate 2, the dielectric plate 4 and the lower metal plate 3 are strip-shaped plates, the upper metal plate 2 is attached to the upper surface of the dielectric plate 4, and the lower metal plate 3 is attached to the lower surface of the dielectric plate 4;
an intermediate layer is arranged in the middle of the dielectric slab 4, the main feeder 7, 4 groups of main branches and 16 radiation patches 5 are arranged in the intermediate layer, the main feeder 7 is connected with the 4 groups of main branches at equal intervals, the 4 groups of main branches respectively comprise 16 branches 6 including 4 branches 6, the 16 branches 6 are respectively connected with 1 radiation patch 5, and the 16 branches 6 have length difference;
the starting position of the main feeder 7 is provided with a feed probe 1 which is longitudinally arranged and penetrates through the medium.
The main feeder 7 comprises a gradient feeder 7, a first equal-width feeder 7, a second equal-width feeder 7 and a third equal-width feeder 7, the gradient feeder 7, the first equal-width feeder 7, the second equal-width feeder 7 and the third equal-width feeder 7 are connected end to end, wherein the width of the gradient feeder 7 is changed linearly, the maximum width of the gradient feeder 7, the width of the first equal-width feeder 7, the width of the second equal-width feeder 7 and the width of the third equal-width feeder 7 are sequentially reduced, 1 group of total branches are connected at the connection position of the gradient feeder 7 and the first equal- width feeder 7, 1 group of total branches are connected at the connection position of the first equal-width feeder 7 and the second equal- width feeder 7, 1 group of total branches are connected at the connection position of the second equal-width feeder 7 and the third equal- width feeder 7, and 1 group of total branches are connected at the end of the third equal-width feeder 7.
The 4 groups of total branches are a first total branch, a second total branch, a third total branch and a fourth total branch, wherein the first total branch further comprises a first wiring structure, and the 4 branches 6 of the first total branch are connected with the main feeder 7 through the first wiring structure; the second main branch further comprises a second wiring structure through which the 4 branches 6 of the second main branch are connected with the main feeder 7; the third main branch further comprises a third wiring structure through which the 4 branches 6 of the third main branch are connected with the main feeder 7; the fourth main branch further comprises a fourth wiring structure through which the 4 branches 6 of the fourth main branch are connected with the main feeder 7.
The first wiring structure comprises four sections, wherein the first section starts from the connection position of the gradual change feeder line 7 and the first equal width feeder line 7 and extends along the width direction of the dielectric plate 4; the second section extends for 12 delta L millimeters from the terminal point of the first section along the length direction of the dielectric plate 4; the third section extends from the end point of the second section by 3 delta y along the width direction of the medium plate 41Millimeter and the extension 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 4, the extending direction of the fourth section is opposite to that of the second section, the fourth section consists of four small sections, each small section is connected end to end, the width of each small section is reduced in sequence, and 1 branch 6 is connected at the tail of each small section;
the second wiring structure comprises four sections, wherein the first section starts from the connection position of the first equal-width feeder line 7 and the second equal-width feeder line 7 and extends along the width direction of the dielectric plate 4; the second section extends for 8 delta L millimeters from the terminal point of the first section along the length direction of the dielectric plate 4; the third section extends from the end point of the second section by 2 delta y along the width direction of the medium plate 41Millimeter and the extension 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 4, the extending direction of the fourth section is opposite to that of the second section, the fourth section consists of four small sections, each small section is connected end to end, the width of each small section is reduced in sequence, and 1 branch 6 is connected at the tail of each small section;
the third wiring structure comprises four sections, wherein the first section starts from the connection position of the second equal-width feeder line 7 and the third equal-width feeder line 7 and extends along the width direction of the dielectric plate 4; the second section extends for 4 delta L millimeters along the length direction of the dielectric plate 4 from the terminal point of the first section; the third section extends from the end point of the second section along the width direction of the dielectric plate 4 by delta y1Millimeter and the extension 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 medium plate 4The extending direction is opposite to that of the second section, the fourth section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail of each small section is connected with 1 branch 6;
the fourth wiring structure comprises two sections, wherein the first section starts from the tail end of the third equal-width feeder line 7 and extends along the width direction of the dielectric plate 4; the second section starts from the terminal point of the first section, extends along the length direction of the dielectric slab 4 and has the extending direction opposite to that of the second section of the third wiring structure, the second section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail end of each small section is connected with 1 branch 6;
the length of the first section of the first wiring structure is shorter than that of the second wiring structure by delta y1Millimeters, the length of the first section of the second wiring structure being shorter by Δ y than the length of the first section of the third wiring structure1Millimeters, the length of the first section of the third wiring structure is shorter than the length of the first section of the fourth wiring structure by delta y1And (4) millimeter.
The widths of the first section, the second section and the third end of the first wiring structure are linearly increased, the widths of the first section, the second section and the third end of the second wiring structure are linearly increased, the widths of the first section, the second section and the third end of the third wiring structure are linearly increased, and the width of the first section of the fourth wiring structure is linearly increased.
The gradual change of the width of the main feed line 7 and the width of the wiring structure is used for realizing impedance matching.
The total 16 branches 6 of the 4 groups of total branches are all L-shaped branches 6, and for the 4L-shaped branches 6 of the same group of total branches, one side of each L-shaped branch 6 is connected with the tail of each small section of the fourth section of the first wiring structure, and the other side of each L-shaped branch 6 is connected with 1 radiation patch 5.
For 4L-shaped branches 6 of the same group of total branches, one side of each L-shaped branch 6 is sequentially increased by delta y millimeters, the other side of each L-shaped branch 6 is sequentially decreased by delta L millimeters, and the longest length of the other side of each L-shaped branch 6 is 3 delta L millimeters.
The length of the upper metal plate 2, the length of the lower metal plate 3 and the length of the medium plate 4 are equal, the width of the medium plate 4 is longer than the width of the upper metal plate 2 and the width of the lower metal plate 3, the upper metal plate 2 and the lower metal plate 3 are aligned and attached along the long edge of one side of the medium plate 4, the overlapped area of the upper metal plate 2, the overlapped area of the lower metal plate 3 and the medium plate 4 is an overlapped area, the main feeder 7 and the group of 4 main branches totally comprise 16 branches 6, the positions of the middle layers are located in the overlapped area, and the positions of the 16 radiation patches 5 are located outside the overlapped area. In this embodiment, the length of the upper metal plate 2 and the lower metal plate 3 is 193mm, the length, the width and the thickness of the dielectric plate 4 are 193mm, 59mm and 1.6mm, respectively, and the length and the width of the radiation patch 5 are 6mm and 2 mm.
The dielectric plate 4 is a solid dielectric.
The intermediate layers are equidistant from the upper and lower surfaces of the dielectric plate 4.
The antenna is manufactured by adopting a printed circuit board technology.
In a specific implementation, the antenna is assembled on a dielectric layer with the dielectric constant of 2.2, the loss tangent of 0.0009, the length of 193mm, the width of 59mm and the total thickness of 1.6 mm; the length of the upper layer metal plate 2 and the lower layer metal plate 3 is 193mm, the main feeder 7 and the radiation patch 5 are in the middle layer of the antenna, the distance L between the branches 6 is 6.7mm, the height difference Deltay between the branches 6 in the group is 4mm, the length difference DeltaL between the branches 6 is 3.3mm, the width of the branch 6 in the group is 0.5mm, and the height difference Deltay between the branches 6 outside the group is 31Is 6 mm.
Fig. 4 is a reflection coefficient of the present invention, fig. 5 is a peak gain and efficiency graph, and it can be seen from fig. 4 and fig. 5 that the impedance bandwidth (| S11| < -10dB) of the antenna is about 43.6%, the maximum gain is 11.2dBi, and the efficiency is stabilized at about 80%.
Fig. 6 to 8 show the radiation patterns of the present invention working at 10.0, 12.0 and 14.0GHz, and it can be seen that the antenna patterns are stable and the beams are fixed.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a fixed array antenna of broadband beam which characterized in that, includes upper metal sheet, lower floor metal sheet, dielectric plate, feed probe, main feeder, 4 groups total branches and 16 radiation patches, wherein:
the upper metal plate, the dielectric plate and the lower metal plate are strip-shaped 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 line, 4 groups of main branches and 16 radiation patches are arranged on the middle layer, the main feeder line is connected with the 4 groups of main branches at equal intervals, the 4 groups of main branches respectively comprise 16 branches including 4 branches, the 16 branches are respectively connected with 1 radiation patch, and the 16 branches have length difference;
and a feeding probe which is longitudinally arranged and penetrates through the medium is arranged at the starting position of the main feeder line.
2. The wideband beam-fixed array antenna of claim 1, wherein the main feeds include a tapered feed, a first equal-width feed, a second equal-width feed, and a third equal-width feed, the gradual change feeder line, the first equal-width feeder line, the second equal-width feeder line and the third equal-width feeder line are connected end to end, wherein the width of the gradient feeder line is linearly changed, the maximum width of the gradient feeder line, the width of the first equal-width feeder line, the width of the second equal-width feeder line and the width of the third equal-width feeder line are sequentially reduced, the connection position of the gradient feeder line and the first equal-width feeder line is connected with 1 group of main branches, the connection position of the first equal-width feeder line and the second equal-width feeder line is connected with 1 group of main branches, and 1 group of main branches are connected at the connection part of the second equal-width feeder line and the third equal-width feeder line, and 1 group of main branches are connected at the tail of the third equal-width feeder line.
3. The wideband beam-fixed array antenna of claim 1, wherein the 4 groups of total branches are a first total branch, a second total branch, a third total branch and a fourth total branch, wherein the first total branch further comprises a first patching structure, and wherein 4 branches of the first total branch are connected to the main feed line through the first patching structure; the second main branch further comprises a second wiring structure, and 4 branches of the second main branch are connected with the main feeder line through the second wiring structure; the third main branch further comprises a third wiring structure, and 4 branches of the third main branch are connected with the main feeder line through the third wiring structure; the fourth main branch further comprises a fourth wiring structure, and 4 branches of the fourth main branch are connected with the main feeder line through the fourth wiring structure.
4. The array antenna of claim 3, wherein the first connection structure comprises four segments, the first segment extends from the connection of the tapered feeder line and the first equal-width feeder line along the width direction of the dielectric plate; the second section extends for 12 delta L millimeters along the length direction of the dielectric slab from the terminal point of the first section; the third section extends from the end point of the second section by 3 delta y along the width direction of the dielectric plate1Millimeter and the extension 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 medium plate and the extending direction is opposite to that of the second section, the fourth section is composed of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail end of each small section is connected with the tail end of each small section1 branch is provided;
the second wiring structure comprises four sections, wherein the first section starts from the connection position of the first equal-width feeder line and the second equal-width feeder line and extends along the width direction of the dielectric slab; 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 from the end point of the second section by 2 delta y along the width direction of the dielectric plate1Millimeter and the extension 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 has the extending direction opposite to that of the second section, the fourth section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail of each small section is connected with 1 branch;
the third wiring structure comprises four sections, wherein the first section starts from the connection position of the second equal-width feeder line and the third equal-width feeder line and extends 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 from the end point of the second section along the width direction of the dielectric plate by delta y1Millimeter and the extension 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 has the extending direction opposite to that of the second section, the fourth section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and the tail of each small section is connected with 1 branch;
the fourth wiring structure comprises two sections, wherein the first section starts from the tail end of the third equal-width feeder line and extends along the width direction of the dielectric plate; the second section starts from the terminal point of the first section, extends along the length direction of the dielectric slab and has the extending direction opposite to that of the second section of the third wiring structure, the second section consists of four small sections, wherein each small section is connected end to end, the width of each small section is reduced in sequence, and 1 branch is connected at the tail end of each small section;
the length of the first section of the first wiring structure is shorter than that of the second wiring structure by delta y1Millimeters, the length of the first section of the second wiring structure being shorter by Δ y than the length of the first section of the third wiring structure1Millimeters, the length of the first section of the third wiring structure is shorter than the length of the first section of the fourth wiring structure by delta y1And (4) millimeter.
5. The wideband beam fixed array antenna of claim 4, wherein the widths of the first segment, the second segment and the third end of the first connection structure all increase linearly, the widths of the first segment, the second segment and the third end of the second connection structure all increase linearly, the widths of the first segment, the second segment and the third end of the third connection structure all increase linearly, and the width of the first segment of the fourth connection structure all increase linearly.
6. The wideband beam-fixed array antenna of claim 5, wherein 16 total branches of the 4 groups of total branches are L-shaped branches, and for 4L-shaped branches of the same group of total branches, one side of each L-shaped branch is connected to the end of each small segment of the fourth segment of the first patch structure, and the other side of each L-shaped branch is connected to 1 radiating patch.
7. The wideband beam-fixed array antenna of claim 6, wherein for 4L-shaped branches of the same set of total branches, one side of the L-shaped branches is sequentially increased by Δ y mm, the other side of the L-shaped branches is sequentially decreased by Δ L mm, and the longest length of the other side of the L-shaped branches is 3 Δ L mm.
8. The broadband beam fixed array antenna according to claim 7, wherein 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 a long edge of one side of the dielectric plate, an overlapping region of the upper metal plate, the lower metal plate and the dielectric plate is an overlapping region, the main feeder line and 4 groups of the total branches are 16 branches located in the overlapping region at the position of the middle layer, and the 16 radiation patches are located outside the overlapping region at the position of the middle layer.
9. The wideband beam fixed array antenna of claim 8, wherein the dielectric plate is a solid dielectric.
10. The wideband beam fixed array antenna of claim 9, wherein the intermediate layer is equidistant from the upper and lower surfaces of the dielectric slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600135.3A CN112736447B (en) | 2020-12-29 | 2020-12-29 | Broadband wave beam fixed array antenna |
Applications Claiming Priority (1)
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