CN117293522A - Wide-axial-ratio circularly polarized antenna and communication equipment - Google Patents
Wide-axial-ratio circularly polarized antenna and communication equipment Download PDFInfo
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- CN117293522A CN117293522A CN202311237234.3A CN202311237234A CN117293522A CN 117293522 A CN117293522 A CN 117293522A CN 202311237234 A CN202311237234 A CN 202311237234A CN 117293522 A CN117293522 A CN 117293522A
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- wide
- circularly polarized
- polarized antenna
- dielectric plate
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- 238000004891 communication Methods 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 48
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 230000010287 polarization Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a wide-axis-ratio circularly polarized antenna and communication equipment, wherein the wide-axis-ratio circularly polarized antenna comprises a bottom dielectric plate, a round metal ground, a middle dielectric plate and a top dielectric plate which are sequentially laminated and connected from bottom to top, the top dielectric plate is provided with a plurality of metal columns arranged in a square array, two metal columns positioned on a first diagonal corner in the square array are missing, the bottom surface of the bottom dielectric plate is provided with a feeder line, the round metal ground is provided with a coupling gap which is coupled with the feeder line, the coupling gap is in a cross shape, the coupling gap comprises a long gap and a short gap which are vertically intersected, and the central axis of the short gap is collinear with the diagonal line of the first diagonal corner. The wide-axis-ratio circularly polarized antenna is novel in structure, and circular polarization can be realized through simple metal column layout; the metal ground is arranged into a round shape, and the feed gap is modified, so that the axial ratio of the antenna is greatly increased, and the antenna can be better suitable for satellite communication while miniaturization is realized.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a wide-axial-ratio circularly polarized antenna and communication equipment.
Background
An antenna is a device in a radio system that emits or receives electromagnetic waves, the functional nature of which is energy conversion, also known as a matching of a wave source to space. With the continuous rise of communication frequency, millimeter waves can be applied to earth orbit satellite communication besides the traditional mobile terminal and base station terminal.
Satellite communications require antennas to radiate circularly polarized waves, and conventional circularly polarized antennas require a large number of complex feed networks to form circularly polarized beams, which is not conducive to miniaturization of the antennas, and more importantly, the conventional antenna circularly polarized structure form has very narrow axial ratio bandwidth.
Disclosure of Invention
The technical problems solved by the invention are as follows: provided are a wide-axis-ratio circularly polarized antenna and a communication device having the same.
In order to solve the technical problems, the first technical scheme adopted by the invention is as follows: the utility model provides a wide axial ratio circular polarized antenna, includes by supreme bottom dielectric plate, circular metal ground, middle level dielectric plate and the top layer dielectric plate that stacks gradually and link to each other down, the top layer dielectric plate has a plurality of metal posts that are square array and set up, is located two on the first diagonal angle in the square array the metal post is absent, the bottom surface of bottom dielectric plate is equipped with the feeder, be equipped with on the circular metal ground with the coupling gap of feeder coupling, the coupling gap is the cross, the coupling gap includes perpendicular long gap and short gap, the axis of short gap with the diagonal collineation of first diagonal angle.
In order to solve the technical problems, the second technical scheme adopted by the invention is as follows: communication equipment comprises the wide-axis-ratio circularly polarized antenna.
The invention has the beneficial effects that: the wide-axis-ratio circularly polarized antenna is novel in structure, and circular polarization can be realized through simple metal column layout; the metal ground is arranged into a round shape, and the feed gap is modified, so that the axial ratio of the antenna is greatly increased, and the antenna can be better suitable for satellite communication while miniaturization is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a wide-axis-ratio circularly polarized antenna according to a first embodiment of the present invention;
fig. 2 is an axial bandwidth diagram of a wide axial circularly polarized antenna according to a first embodiment of the present invention;
fig. 3 is a perspective view of an initial antenna;
FIG. 4 is an axial bandwidth diagram of an initial antenna;
fig. 5 is a perspective view of a primary retrofitted antenna;
FIG. 6 is an axial ratio bandwidth diagram of a primary retrofitted antenna;
fig. 7 is a perspective view of a secondary retrofit antenna;
fig. 8 is an axial ratio bandwidth diagram of a secondarily modified antenna.
Reference numerals illustrate:
1. a bottom dielectric plate;
2. a circular metal land;
3. a middle layer dielectric plate;
4. a top dielectric plate;
5. a metal column;
6. a coupling slit; 61. a long slit; 62. a short slit;
7. a feeder.
Detailed Description
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiment of the present invention, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
Example 1
Referring to fig. 1 to 8, a first embodiment of the present invention is as follows: communication equipment comprising a wide-axis ratio circularly polarized antenna is well suited for satellite communication requirements.
As shown in fig. 1, the wide-axis-ratio circularly polarized antenna comprises a bottom dielectric plate 1, a circular metal ground 2, a middle dielectric plate 3 and a top dielectric plate 4 which are sequentially stacked and connected from bottom to top, wherein the top dielectric plate 4 is provided with a plurality of metal posts 5 arranged in a square array, and two metal posts 5 positioned on a first diagonal angle in the square array are missing, in other words, an array formed by arranging the plurality of metal posts 5 is not a standard square array; the bottom surface of bottom dielectric plate 1 is equipped with feeder 7, be equipped with on the circular metal ground 2 with feeder 7 coupled coupling gap 6, coupling gap 6 is the cross, coupling gap 6 includes long slit 61 and the short slit 62 of perpendicular crossing, the axis of short slit 62 with the diagonal collineation of first diagonal angle.
The projection of the metal ground on the top dielectric plate 4 covers each metal post 5, namely, when the top dielectric plate 4 and the middle dielectric plate 3 are hidden and the wide-axis-ratio circularly polarized antenna is overlooked, each metal post 5 is positioned in the circular metal ground 2.
The feeder 7 passes through the junction of the long slot 61 and the short slot 62, and the feeder 7 forms an included angle of 45 degrees with the short slot 62 and the long slot 61 respectively. Specifically, the intersection of the long slit 61 and the short slit 62 corresponds to the center of the square array, that is, the center line of the metal pillar 5 located at the center passes through the intersection of the long slit 61 and the short slit 62.
In this embodiment, the metal posts 5 are cylindrical, the diameter of the metal posts 5 is 1mm, the center distance between two adjacent metal posts 5 in the X-axis direction is 1.15mm, and the center distance between two adjacent metal posts 5 in the Y-axis direction is 1.15mm.
Optionally, the height of the metal pillar 5 is 0.508mm, and the thickness of the top dielectric plate 4 is 0.508mm, that is, the hole on the top dielectric plate 4 for accommodating the metal pillar 5 is a through hole, in detail, the top surface of the metal pillar 5 is coplanar with the top surface of the top dielectric plate 4, and the bottom surface of the metal pillar 5 is coplanar with the bottom surface of the top dielectric plate 4.
The dielectric constant of the top dielectric plate 4 and the dielectric constant of the bottom dielectric plate 1 are smaller than the dielectric constant of the middle dielectric plate 3. Optionally, the dielectric constant of the top dielectric plate 4 is equal to the dielectric constant of the bottom dielectric plate 1; the thickness of the top dielectric plate 4 is larger than that of the bottom dielectric plate 1. In this embodiment, the top dielectric plate 4 and the bottom dielectric plate 1 are respectively formed by using rojies 4350 plates, and the middle dielectric plate 3 is formed by using rojies 4450 plates.
The width of the long slit 61 is smaller than the width of the short slit 62, in this embodiment, the length of the long slit 61 is 4mm, and the width of the long slit 61 is 0.2mm; the length of the short slit 62 is 1.6mm, and the width of the short slit 62 is 0.3mm.
Fig. 2 shows an axial ratio bandwidth diagram of the wide axial ratio circularly polarized antenna of the present embodiment, and as can be seen from fig. 2, the axial ratio bandwidth of the wide axial ratio circularly polarized antenna of the present embodiment is 27.5-40.5GHz, thereby realizing ultra-wideband.
Next, the following development process of the present technical solution is briefly described:
fig. 3 is a perspective view of an initial antenna, where the initial antenna includes a bottom dielectric plate, a square metal ground, a middle dielectric plate, and a top dielectric plate that are sequentially stacked and connected from bottom to top, the top dielectric plate has a plurality of metal columns arranged in a square array (5 x5 array), a coupling slot in a shape of a line is arranged on the square metal ground, a feeder line coupled to the coupling slot is arranged on the bottom surface of the bottom dielectric layer, and the feeder line is perpendicular to the coupling slot.
Fig. 4 shows an axial ratio bandwidth diagram of the initial antenna, and as can be seen from fig. 4, the axial ratio of the initial antenna in the whole frequency band is greater than 3dB, which indicates that the initial antenna is a typical linear polarization antenna.
Fig. 5 is a perspective view of a primary rebuilt antenna that eliminates two of the metal posts located at the first diagonal in a square array, based on the original antenna.
Fig. 6 shows an axial ratio bandwidth diagram of the primary rebuilt antenna, and as can be seen from fig. 6, the primary rebuilt antenna is a circularly polarized antenna, and the axial ratio bandwidth can only cover 31.8-38.5GHz.
Fig. 7 is a perspective view of a secondary retrofit antenna that improves square metal ground to round metal ground on the basis of a primary retrofit antenna.
Fig. 8 shows an axial ratio bandwidth diagram of the secondary modified antenna, and as can be seen from fig. 8, the secondary modified antenna is a circularly polarized antenna, and the axial ratio bandwidth of the secondary modified antenna is improved to 30.5-40Ghz.
The wide-axis-ratio circularly polarized antenna of the embodiment is based on the secondary transformation of the antenna, the coupling gap in the shape of a straight line is improved to be a cross-shaped coupling gap, the lengths of two linear gaps in the cross-shaped coupling gap are different, the central axis of a short gap is collinear with the diagonal of the first diagonal, and finally the wide-axis-ratio circularly polarized antenna of the embodiment is obtained.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A wide-axis-ratio circularly polarized antenna is characterized in that: including bottom dielectric slab, circular metal ground, middle level dielectric slab and the top dielectric slab that from bottom to top stacks gradually and link to each other, the top dielectric slab has a plurality of metal posts that are square array and set up, is located two on the first diagonal angle in square array the metal post is absent, the bottom surface of bottom dielectric slab is equipped with the feeder, circular metal ground be equipped with the coupling gap of feeder coupling, the coupling gap is the cross, the coupling gap includes perpendicular long gap and short gap, the axis of short gap with the diagonal line collineation of first diagonal angle.
2. The wide-axis ratio circularly polarized antenna of claim 1, wherein: the projection of the metal ground on the top dielectric plate covers each metal post.
3. The wide-axis ratio circularly polarized antenna of claim 1, wherein: and the feeder line passes through the junction of the long slot and the short slot in a projection mode along the thickness direction of the wide-axis ratio circularly polarized antenna.
4. A wide-axis ratio circularly polarized antenna as claimed in claim 3, wherein: and the feeder line forms an included angle of 45 degrees with the short slot and the long slot respectively along the thickness direction projection of the wide-axis ratio circular polarized antenna.
5. The wide-axis ratio circularly polarized antenna of claim 1, wherein: the diameter of the metal column is 1mm, the center distance between two adjacent metal columns in the X-axis direction is 1.15mm, and the center distance between two adjacent metal columns in the Y-axis direction is 1.15mm.
6. The wide-axis ratio circularly polarized antenna of claim 1, wherein: the height of the metal column is 0.508mm, and the thickness of the top dielectric plate is 0.508mm.
7. The wide-axis ratio circularly polarized antenna of claim 1, wherein: the dielectric constants of the top dielectric plate and the bottom dielectric plate are smaller than those of the middle dielectric plate.
8. The wide-axis ratio circularly polarized antenna of claim 7, wherein: the dielectric constant of the top dielectric plate is equal to that of the bottom dielectric plate.
9. The wide-axis ratio circularly polarized antenna of claim 1, wherein: the width of the long slit is smaller than the width of the short slit.
10. A communication device, characterized in that: comprising a wide-axis ratio circularly polarized antenna according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311237234.3A CN117293522A (en) | 2023-09-22 | 2023-09-22 | Wide-axial-ratio circularly polarized antenna and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311237234.3A CN117293522A (en) | 2023-09-22 | 2023-09-22 | Wide-axial-ratio circularly polarized antenna and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117293522A true CN117293522A (en) | 2023-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311237234.3A Pending CN117293522A (en) | 2023-09-22 | 2023-09-22 | Wide-axial-ratio circularly polarized antenna and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117293522A (en) |
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2023
- 2023-09-22 CN CN202311237234.3A patent/CN117293522A/en active Pending
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