CN107221750B - Dual-polarized dual-element array slot antenna - Google Patents
Dual-polarized dual-element array slot antenna Download PDFInfo
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- CN107221750B CN107221750B CN201710458047.6A CN201710458047A CN107221750B CN 107221750 B CN107221750 B CN 107221750B CN 201710458047 A CN201710458047 A CN 201710458047A CN 107221750 B CN107221750 B CN 107221750B
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- 230000009977 dual effect Effects 0.000 claims description 25
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 6
- 238000002955 isolation Methods 0.000 abstract description 5
- 238000003491 array Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 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
- H01Q1/50—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
- H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a dual-polarized dual-element array slot antenna, which comprises a resonant cavity and a baffle plate, wherein a first slot is formed in the left part of the resonant cavity, a second slot is formed in the bottom of the resonant cavity, the left side of the first slot is positioned at the center of the left outer wall of the resonant cavity, the right side of the first slot is positioned at the center of the left inner wall of the resonant cavity, the lower side of the second slot is positioned at the center of the bottom outer wall of the resonant cavity, the upper side of the second slot is positioned at the center of the bottom inner wall of the resonant cavity, the baffle plate is arranged on the top outer wall of the resonant cavity, a third slot, a fourth slot, a fifth slot and a sixth slot which are used as slot antenna arrays are formed in the baffle plate, and the third slot, the fourth slot, the fifth slot and the sixth slot are all formed in the positions from the top to the bottom of the baffle plate. The invention has the advantages of small volume, simple design, easy processing, high antenna gain, good isolation and the like, and can well meet the requirements of modern communication systems.
Description
Technical Field
The invention relates to a slot antenna, in particular to a dual-polarized dual-element array slot antenna, belonging to the field of wireless communication.
Background
Microwave antennas are indispensable devices at transmitting and receiving ends in modern communication systems, and conventional monopole antennas can only realize polarization in one direction, so that combining two monopole antennas into a dual-polarized antenna can realize dual-polarized functions, but this necessarily increases the number of antennas, so that the dual-polarized antenna requires more installation space and is troublesome in terms of subsequent maintenance work.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a dual-polarized dual-element array slot antenna which has the advantages of small volume, simple design, easy processing, high antenna gain, good isolation and the like, and can well meet the requirements of a modern communication system.
The aim of the invention can be achieved by adopting the following technical scheme:
a dual-polarized dual-element array slot antenna comprises a resonant cavity and a baffle, wherein a gap is formed in the left part and the bottom of the resonant cavity respectively, the baffle is arranged on the outer wall of the top of the resonant cavity, and four gaps serving as a slot antenna array are formed in the baffle.
As a preferable scheme, the gap at the left part of the resonant cavity is a first gap, the left side of the first gap is positioned at the center of the outer wall at the left part of the resonant cavity, and the right side of the first gap is positioned at the center of the inner wall at the left part of the resonant cavity; the gap at the bottom of the resonant cavity is a second gap, the lower edge of the second gap is positioned at the center of the outer wall of the bottom of the resonant cavity, and the upper edge of the second gap is positioned at the center of the inner wall of the bottom of the resonant cavity.
As a preferable scheme, the first gap is a rectangular structure with two long sides arranged left and right and two short sides arranged up and down when seen from the left side surface of the resonant cavity; and the second gap is of a rectangular structure with two long sides arranged left and right and two short sides arranged up and down when seen from the bottom surface of the resonant cavity.
As a preferred embodiment, the first slit and the second slit have the same size.
As a preferable scheme, four slots serving as slot antenna arrays on the baffle are a third slot, a fourth slot, a fifth slot and a sixth slot respectively, and the third slot, the fourth slot, the fifth slot and the sixth slot are all arranged at the positions from the top to the bottom of the baffle.
As a preferred scheme, from the top surface of baffle, third gap and fourth gap bilateral symmetry set up, and are two rectangle structures that set up about the long limit, two minor faces set up from top to bottom, fifth gap and sixth gap bilateral symmetry set up, and are two rectangle structures that set up about the long limit, two minor faces set up from top to bottom, interval between third gap and the fourth gap is the same with interval between fifth gap and the sixth gap.
As a preferred embodiment, the third slit, the fourth slit, the fifth slit and the sixth slit have the same size.
As a preferable scheme, the resonant cavity and the baffle are of rectangular structures, the top of the resonant cavity is provided with an opening, the length of the baffle is larger than that of the opening at the top of the resonant cavity, and the width of the baffle is larger than that of the opening at the top of the resonant cavity.
As a preferred solution, the baffle is fixed to the top outer wall of the resonant cavity by means of screws.
As a preferable scheme, the resonant cavity and the baffle are both made of metal materials.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the left part and the bottom part of the resonant cavity are respectively provided with a gap, the horizontal/vertical polarization is realized in one resonant cavity, the technical requirement of dual polarization is met, and as different polarization directions in the dual polarization antenna are mutually vertical, the slotting directions of the resonant cavity are vertical, and the resonant cavity can realize good isolation even if overlapped; in addition, under the condition of not increasing the volume of the resonant cavity, four slots are formed on the baffle plate to serve as a slot antenna array, namely, the gain of the antenna can be well increased by increasing the number of slots to form an array, the gains in two polarization directions can reach more than 8dB, the directivity is good, the radiation of the slot antenna array is good, the performance is good, the structure is simple, the implementation is easy, and the requirements of a modern communication system can be well met.
Drawings
Fig. 1 is a schematic diagram of a dual-element array slot antenna according to embodiment 1 of the present invention.
Fig. 2 is an S-parameter graph of the dual-element array slot antenna of embodiment 1 of the present invention.
Fig. 3a is an E-plane direction diagram of the dual-element array slot antenna of embodiment 1 of the present invention in the horizontal direction.
Fig. 3b is an E-plane direction diagram of the dual-element array slot antenna of embodiment 1 of the present invention in the vertical direction.
Fig. 4 is a schematic diagram of a rectangular metal block in the case of manufacturing the dual-element array slot antenna of embodiment 1 of the present invention.
Fig. 5 is a schematic view of a metal plate in the case of manufacturing the dual-element array slot antenna of embodiment 1 of the present invention.
Wherein, 1-resonant cavity, 2-baffle, 3-first gap, 4-second gap, 5-third gap, 6-fourth gap, 7-fifth gap, 8-sixth gap.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1:
as shown in fig. 1, this embodiment provides a dual polarized dual element array slot antenna, this antenna includes resonant cavity 1 and baffle 2, resonant cavity 1 and baffle 2 all adopt metal material to make, and are rectangular body structure, and the open top of resonant cavity 1 makes its inside packing have the air, baffle 2 passes through the fix with screw on the top outer wall of resonant cavity 1, and the length of baffle 2 is greater than resonant cavity 1 open top's length, and the width of baffle 2 is greater than resonant cavity 1 open top's width, and in this embodiment, the length of baffle 2 is consistent with resonant cavity 1 open top's length, and the width of baffle 2 is consistent with resonant cavity 1 open top's width.
The left part of the resonant cavity 1 is provided with a first gap 3, the bottom of the resonant cavity 1 is provided with a second gap 4 for feeding, the left side of the first gap 3 is positioned at the center of the outer wall of the left part of the resonant cavity 1, the right side of the first gap is positioned at the center of the inner wall of the left part of the resonant cavity 1, and the first gap 3 is a rectangular structure with two long sides arranged left and right and two short sides arranged up and down as seen from the left side surface of the resonant cavity 1; the lower edge of the second gap 4 is positioned at the center of the outer wall of the bottom of the resonant cavity 1, the upper edge of the second gap 4 is positioned at the center of the inner wall of the bottom of the resonant cavity 1, the second gap 4 is a rectangular structure with two long edges arranged left and right and two short edges arranged up and down, and the first gap 3 and the second gap 4 are the same in size.
The baffle 2 is provided with a third gap 5, a fourth gap 6, a fifth gap 7 and a sixth gap 8, the third gap 5, the fourth gap 6, the fifth gap 7 and the sixth gap 8 are used as slot antenna arrays, all the third gap 5 and the fourth gap 6 are symmetrically arranged left and right and are rectangular structures which are arranged left and right on two long sides and are arranged up and down on two short sides, the fifth gap 7 and the sixth gap 8 are symmetrically arranged left and down on two long sides and are rectangular structures which are arranged left and right on two short sides, the distance between the third gap 5 and the fourth gap 6 is the same as the distance between the fifth gap 7 and the sixth gap 8, and the sizes of the third gap, the fourth gap, the fifth gap and the sixth gap are the same.
The dual polarized dual element array slot antenna of this embodiment works as follows:
the first slot 3 and the second slot 4 are respectively connected with rectangular waveguides and serve as input ports (first ports), the third slot 5, the fourth slot 6, the fifth slot 7 and the sixth slot 8 serve as output ports (second ports), the rectangular waveguides connected with the first slot 3 and the second slot 4 feed power, energy is transmitted into the resonant cavity 1 to carry out resonant filtering, after the resonant filtering, the energy is radiated out through the third slot 5, the fourth slot 6, the fifth slot 7 and the sixth slot 8, S parameter curves are shown in fig. 2, S1 and 1 represent return loss of the first ports, S1 and 2 represent reverse transmission coefficients from the second ports to the first ports, S2 and 1 represent forward transmission coefficients from the first ports to the second ports, and S2 and 2 represent return loss of the second ports.
As shown in fig. 3a to 3b, in this embodiment, polarization in two directions of horizontal/vertical is implemented in one resonant cavity 1 through a first slot 3 at the left part of the resonant cavity 1 and a second slot 4 at the bottom, and since different polarization directions are perpendicular to each other in the dual polarized antenna, the slotting directions in the resonant cavity 1 are perpendicular, and even if overlapping together, excellent isolation can be implemented; in addition, in this embodiment, under the condition of not increasing the volume of the resonant cavity 1, the baffle plate 2 is provided with the third slot 5, the fourth slot 6, the fifth slot 7 and the sixth slot 8 as a slot antenna array, that is, the number of slots is increased to form an array, so that the gain of the antenna can be well increased, the gains in two polarization directions can reach more than 8dB, the directivity is better, and the slot antenna array has better radiation, good performance, simple structure and easy implementation.
The dual polarized dual element array slot antenna of this embodiment has the following processing procedures:
a first part: as shown in fig. 4, a rectangular cavity is formed in the middle of a rectangular metal block and is used as a resonant cavity 1, a rectangular slot is formed at the left part and the bottom of the resonant cavity 1 and is used as a feed port (a first slot 3 and a second slot 4) respectively, the two rectangular slots can be connected with a rectangular waveguide to feed the resonant cavity 1, and the top of the resonant cavity 1 is directly opened;
a second part: as shown in fig. 5, a metal plate is used as a baffle plate 2, four rectangular slots (a third slot 5, a fourth slot 6, a fifth slot 7 and a sixth slot 8) are formed in the baffle plate 2 as a slot antenna array, and the length and width dimensions of the baffle plate 2 are larger than the top opening of the resonant cavity 1 so as to meet the requirement of full sealing;
and fixing the first part and the second part by using screws, and finally connecting a rectangular waveguide for testing.
In the above embodiment, the metal material used for the resonant cavity and the baffle may be any one of aluminum, iron, tin, copper, silver, gold and platinum, or may be an alloy of any one of aluminum, iron, tin, copper, silver, gold and platinum.
In summary, the left part and the bottom of the resonant cavity are respectively provided with a slit, polarization in horizontal/vertical directions is realized in one resonant cavity, the technical requirement of dual polarization is met, and as different polarization directions in the dual polarization antenna are mutually vertical, the slotting directions of the resonant cavity are vertical, and good isolation can be realized even if the resonant cavities are overlapped; in addition, under the condition of not increasing the volume of the resonant cavity, four slots are formed on the baffle plate to serve as a slot antenna array, namely, the gain of the antenna can be well increased by increasing the number of slots to form an array, the gains in two polarization directions can reach more than 8dB, the directivity is good, the radiation of the slot antenna array is good, the performance is good, the structure is simple, the implementation is easy, and the requirements of a modern communication system can be well met.
The above-mentioned embodiments are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make equivalent substitutions or modifications according to the technical solution and the inventive concept of the present invention within the scope of the present invention disclosed in the present invention patent, and all those skilled in the art belong to the protection scope of the present invention.
Claims (7)
1. A dual polarized dual element array slot antenna is characterized in that: the antenna comprises a resonant cavity and a baffle, wherein the left part and the bottom of the resonant cavity are respectively provided with a gap, the baffle is arranged on the outer wall of the top of the resonant cavity, and four gaps serving as a slot antenna array are formed in the baffle;
the gap at the left part of the resonant cavity is a first gap, the left side of the first gap is positioned at the center of the outer wall at the left part of the resonant cavity, and the right side of the first gap is positioned at the center of the inner wall at the left part of the resonant cavity; the gap at the bottom of the resonant cavity is a second gap, the lower edge of the second gap is positioned at the center of the outer wall of the bottom of the resonant cavity, and the upper edge of the second gap is positioned at the center of the inner wall of the bottom of the resonant cavity; the first gap is a rectangular structure with two long sides arranged left and right and two short sides arranged up and down when seen from the left side surface of the resonant cavity; the second gap is a rectangular structure with two long sides arranged left and right and two short sides arranged up and down when seen from the bottom surface of the resonant cavity;
the four slots serving as the slot antenna array on the baffle are a third slot, a fourth slot, a fifth slot and a sixth slot respectively, and the third slot, the fourth slot, the fifth slot and the sixth slot are all arranged at the positions from the top to the bottom of the baffle; seen from the top surface of the baffle, the third gap and the fourth gap are arranged in bilateral symmetry, and are rectangular structures which are arranged on the left side and the right side of the two long sides and the upper side and the lower side of the two short sides, and the fifth gap and the sixth gap are arranged in bilateral symmetry and are rectangular structures which are arranged on the left side and the lower side of the two long sides and the upper side and the lower side of the two short sides.
2. A dual polarized dual element array slot antenna according to claim 1, wherein: the first gap and the second gap are the same in size.
3. A dual polarized dual element array slot antenna according to claim 1, wherein: the distance between the third gap and the fourth gap is the same as the distance between the fifth gap and the sixth gap.
4. A dual polarized dual element array slot antenna according to claim 3, wherein: the third gap, the fourth gap, the fifth gap and the sixth gap are the same in size.
5. A dual polarized dual element array slot antenna according to any one of claims 1-4, wherein: the resonant cavity and the baffle are of rectangular structures, the top of the resonant cavity is provided with an opening, the length of the baffle is larger than that of the opening at the top of the resonant cavity, and the width of the baffle is larger than that of the opening at the top of the resonant cavity.
6. A dual polarized dual element array slot antenna according to any one of claims 1-4, wherein: the baffle is fixed on the top outer wall of the resonant cavity through screws.
7. A dual polarized dual element array slot antenna according to any one of claims 1-4, wherein: the resonant cavity and the baffle are both made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458047.6A CN107221750B (en) | 2017-06-16 | 2017-06-16 | Dual-polarized dual-element array slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458047.6A CN107221750B (en) | 2017-06-16 | 2017-06-16 | Dual-polarized dual-element array slot antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107221750A CN107221750A (en) | 2017-09-29 |
| CN107221750B true CN107221750B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710458047.6A Active CN107221750B (en) | 2017-06-16 | 2017-06-16 | Dual-polarized dual-element array slot antenna |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321528B (en) * | 2018-01-18 | 2023-12-29 | 华南理工大学 | Groove antenna array with simplified feed structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716415A (en) * | 1984-12-06 | 1987-12-29 | Kelly Kenneth C | Dual polarization flat plate antenna |
| CN102544649A (en) * | 2012-01-04 | 2012-07-04 | 西安电子科技大学 | One-cavity three-mode filter |
| CN105552573A (en) * | 2015-12-22 | 2016-05-04 | 吴锡东 | Dual-polarized waveguide slot feed source lens antenna with symmetric dielectric filling columns |
| CN207038724U (en) * | 2017-06-16 | 2018-02-23 | 华南理工大学 | A kind of dual-polarized double base array slot antenna |
-
2017
- 2017-06-16 CN CN201710458047.6A patent/CN107221750B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716415A (en) * | 1984-12-06 | 1987-12-29 | Kelly Kenneth C | Dual polarization flat plate antenna |
| CN102544649A (en) * | 2012-01-04 | 2012-07-04 | 西安电子科技大学 | One-cavity three-mode filter |
| CN105552573A (en) * | 2015-12-22 | 2016-05-04 | 吴锡东 | Dual-polarized waveguide slot feed source lens antenna with symmetric dielectric filling columns |
| CN207038724U (en) * | 2017-06-16 | 2018-02-23 | 华南理工大学 | A kind of dual-polarized double base array slot antenna |
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| CN107221750A (en) | 2017-09-29 |
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