CN114614241B - Decoupled dual-polarized low-frequency oscillator, antenna and method - Google Patents
Decoupled dual-polarized low-frequency oscillator, antenna and method Download PDFInfo
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- CN114614241B CN114614241B CN202011416716.1A CN202011416716A CN114614241B CN 114614241 B CN114614241 B CN 114614241B CN 202011416716 A CN202011416716 A CN 202011416716A CN 114614241 B CN114614241 B CN 114614241B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005855 radiation Effects 0.000 claims abstract description 24
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 7
- 238000003491 array Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005388 cross polarization Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating 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
- H01Q1/36—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
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a decoupled dual-polarized low-frequency oscillator, an antenna and a method, wherein the low-frequency oscillator comprises the following components: a base board on which a first circuit is printed; two orthogonally spliced oscillator pieces, wherein the oscillator pieces are printed with a second circuit, one end of each oscillator piece is fixed on the base plate, and the second circuit is electrically connected with the first circuit; the radiating patch is fixed at the other end of the oscillator patch and comprises four oscillator arms which are not contacted with each other in pairs, the oscillator arms are in a cross shape, two non-adjacent oscillator arms form a dipole, the four oscillator arms form two orthogonal dipole radiation, and the oscillator arms are electrically connected with the second circuit. The vibrator arm of the invention adopts a cross structure, so that the low-frequency vibrator has no shielding to the high-frequency vibrator, the shielding of the low-frequency vibrator to the high-frequency vibrator units which are arranged on two sides side by side can be effectively reduced, the mutual interference between the high frequency and the low frequency is small, and the invention can be widely applied to the technical field of antennas.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a decoupled dual-polarized low-frequency oscillator, an antenna and a method.
Background
With the rapid development of the mobile communication industry, the requirements of people on mobile networks are gradually increased, and in the current large environment where 2G, 3G, 4G and 5G networks coexist, the evolution of the base station antenna to multifrequency and miniaturization is required, and a miniaturized MIMO (Multiple-Input Multiple-Output) antenna supporting the operation of Multiple systems is becoming the main development direction of the base station antenna.
At present, the MIMO antenna mainly adopts a structure of high-low frequency nesting and multi-frequency side by side, along with the improvement of the miniaturization requirement of the antenna, the requirement of the space between the antenna arrays is higher and higher, but due to the coupling effect between the arrays, the smaller the space between the antenna arrays is, the larger the energy coupling between the arrays is, and the mutual influence is also larger. In this case, decoupling of the systems is required, which would easily deteriorate the circuit and the index of the pattern, and affect the antenna performance. In recent years, a large number of X-like vibrator units are used as low-frequency vibrator units, and such vibrator units can be flexibly arranged, but the high-frequency vibrator units arranged on both sides are shielded.
Disclosure of Invention
In order to solve at least one of the technical problems existing in the prior art to a certain extent, the invention aims to provide a decoupled dual-polarized low-frequency oscillator, an antenna and a method.
The technical scheme adopted by the invention is as follows:
A decoupled dual polarized low frequency oscillator comprising:
A base board on which a first circuit is printed;
Two orthogonally spliced oscillator pieces, wherein a second circuit is printed on each oscillator piece, one end of each oscillator piece is fixed on the base plate, and the second circuit is electrically connected with the first circuit;
The radiating patch is fixed at the other end of the oscillator patch, the radiating patch comprises four oscillator arms which are not contacted with each other in pairs and are cross-shaped, each oscillator arm is W-shaped, two non-adjacent oscillator arms form a dipole, four oscillator arms form two orthogonal dipole radiation, and each oscillator arm is electrically connected with the second circuit.
Further, the middle part of the vibrator arm is hollowed out to form a radiation groove, the radiation groove divides the vibrator arm into an outer frame and an inner frame, the outer frame is distributed on the outer side of the radiation groove, and the inner frame is distributed on the inner side of the radiation groove;
a plurality of parallel short stubs are arranged on the inner frame; and/or the number of the groups of groups,
And a plurality of parallel short stubs are arranged on the outer frame.
Further, the line length of the parallel stub is 0.12-0.3 wavelength of the high-frequency center frequency;
the line length between two adjacent parallel short stubs on the outer frame is smaller than one half wavelength of the highest frequency of the high frequency; or alternatively, the first and second heat exchangers may be,
The line length between two adjacent parallel short stubs on the inner frame is smaller than one half wavelength of the highest frequency of the high frequency.
Further, the vibrator sheet includes a printed dielectric plate, and the second circuit includes a ground layer printed on a first surface of the printed dielectric plate and a signal layer printed on a second surface of the printed dielectric plate.
Further, the stratum is composed of plane parallel double-wire, the upper end of the stratum passes through the hole site of the radiation piece to be electrically connected with the oscillator arm, and the signal layer forms a loop through the plane parallel double-wire crossing the stratum to feed the oscillator arm.
Further, the upper end of one oscillator piece is slotted, the lower end of the other oscillator piece is slotted, and the two oscillator pieces are in orthogonal insertion connection.
Further, the base plate is made of a single-sided printed circuit board, a copper foil is coated on one side, far away from the oscillator piece, of the single-sided printed circuit board, and a layer of green oil is coated on the copper foil, so that the base plate and the bottom plate are electrically coupled and connected.
The invention adopts another technical scheme that:
An antenna comprising a reflector plate, a high frequency element and a low frequency element, said low frequency element employing a decoupled dual polarized low frequency element as described above.
Further, 4 high-frequency vibrators and 1 low-frequency vibrator form an antenna array unit;
In one antenna array unit, 4 high-frequency vibrators are respectively arranged on four corners of the low-frequency vibrator, and each high-frequency vibrator corresponds to one vibrator arm of the low-frequency vibrator.
Further, the high-frequency system array unit is formed by the high-frequency vibrators of the 2x4 array, the distances among the high-frequency vibrators are equal, and the low-frequency vibrators are arranged in the middle of the high-frequency system array unit.
The invention adopts another technical scheme that:
the design method is applied to the decoupled dual-polarized low-frequency oscillator, and comprises the following steps of:
the vibrator arm is arranged to be of a cross structure, so that the low-frequency vibrator does not shade the high-frequency vibrator;
And a plurality of parallel short stubs are arranged on the oscillator arm, so that the parallel short stubs and the oscillator arm form a resonant circuit, and high-frequency current is prevented from flowing on the oscillator arm.
The beneficial effects of the invention are as follows: the vibrator arm of the invention adopts a cross structure, so that the low-frequency vibrator has no shielding to the high-frequency vibrator, the shielding of the low-frequency vibrator to the high-frequency vibrator units which are arranged on two sides side by side can be effectively reduced, and the mutual interference between the high frequency and the low frequency is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description is made with reference to the accompanying drawings of the embodiments of the present invention or the related technical solutions in the prior art, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solutions of the present invention, and other drawings may be obtained according to these drawings without the need of inventive labor for those skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of a decoupled cross dual-polarized low frequency oscillator unit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an exploded structure of a decoupled cross-type dual-polarized low frequency oscillator unit according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of the whole structure of a decoupled cross dual-polarized low frequency oscillator unit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an antenna according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another antenna according to an embodiment of the present invention;
FIG. 6 is a high frequency gain pattern when different types of low frequency oscillators are present in an embodiment of the present invention;
fig. 7 is a high frequency pattern when there are different types of low frequency oscillators in the embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Example 1
As shown in fig. 1,2 and 3, the present embodiment provides a decoupled cross dual-polarized low-frequency oscillator unit, which includes two orthogonally spliced oscillator pieces 22, and a base plate 33 and a radiation piece 11 respectively connected to two ends of the oscillator pieces 22. The radiation piece 11 comprises four W-shaped vibrator arms 12 which are not contacted with each other, and the four W-shaped vibrator arms 12 are distributed in an orthogonal symmetry mode, and a cross-shaped structure is integrally formed. Two small radiation arms on the outer side of the W-shaped vibrator arm are mutually perpendicular, and a radiation groove 13 is formed in the center of the W-shaped vibrator arm in a hollowed-out mode. The radiation groove 13 is in an axisymmetric structure about the symmetry axis of the W-shaped vibrator arm 12, and the radiation groove 13 divides the W-shaped vibrator arm 12 into two parts, namely an outer frame 15 and an inner frame 16 which are positioned outside and inside the radiation groove 13. Wherein the provision of the radiation slot 13 facilitates the extension of the path of the vibrator arm. Two or more parallel stubs 14 are distributed on the inner edges of the inner frame 16 and the outer frame 15 of the radiation groove 13, six parallel stubs are provided in this embodiment, and the parallel stubs 14 and the inner and outer frames between them form a low-pass filter, preventing high-frequency current from flowing on the W-shaped vibrator arm 12, and reducing the influence on the high-frequency pattern due to the existence of the low-frequency vibrator. The length of the parallel stub 14 is 0.12-0.3 center wavelength of the high frequency center frequency, the length of the outer frame or the inner frame between the two parallel stubs 14 is less than one half wavelength of the highest frequency of the high frequency, and the width of the parallel stub 14 is 0.3-3 mm. The bottom of the W-shaped oscillator arm 12 is connected with the oscillator piece 22, two non-adjacent oscillator arms form a pair to form a dipole, and four oscillator arms form two orthogonal dipole radiation.
The vibrator plate 22 is made of a printed circuit board and comprises a stratum 23 and a signal layer 24, the stratum 23 and the signal layer 24 are distributed on two different surfaces (namely a first surface and a second surface) of the printed medium plate, the stratum 23 is composed of plane parallel double wires, and the upper end of the stratum 23 penetrates through a hole site of the radiation plate 11 to be connected with the W-shaped vibrator arm 12. The signal layer 24 loops through the planar twin conductor across the formation, feeding one pair of transducer arms 12; the upper end of one oscillator piece 22 is provided with a groove 26, the lower end of the other oscillator piece 22 is provided with a groove 25, and the two oscillator pieces 22 are orthogonally spliced in a specific way as shown in fig. 2.
The base plate 33 is made of a single-sided printed circuit board, the lower layer of the printed circuit board is a stratum 34 covered with copper foil, and the lower layer of the copper foil is covered with a layer of green oil so as to realize the electric coupling connection between the base plate and the reflecting plate. Green oil is used to isolate the reflector plate 3 from the base plate 33, avoiding direct contact, to improve intermodulation of the whole system. The stratum 23 of the oscillator piece passes downwards through the hole site of the base plate and is connected with the stratum 34 of the base plate.
Example 2
As shown in fig. 4, the present embodiment also provides an antenna using the above-described decoupled cross-type dual-polarized low-frequency oscillator, which includes a reflection plate 3, and a low-frequency oscillator 1 and a high-frequency oscillator 2 both mounted on the reflection plate 3. The low-frequency oscillator 1 is arranged in the middle, the high-frequency oscillators 2 are arranged on two sides of the low-frequency oscillator 1, the high-frequency oscillators 2 are arranged on four corners of the low-frequency oscillator 1, two high frequencies on the same side are a system (namely, a left system and a right system respectively), space is saved by arrangement, meanwhile, projections of the low-frequency oscillator 1 and the high-frequency oscillator 2 on a bottom plate are not overlapped, and mutual interference between the high and low is small. Meanwhile, as the decoupling design reduces the influence of the low-frequency oscillator 1 on the high-frequency oscillator 2, as shown in fig. 6 and 7, the high-frequency directional diagram of the cross-shaped dual-polarized oscillator and the common cross-shaped dual-polarized oscillator with decoupling of the invention is provided without the low-frequency oscillator under the arrangement condition, and after the common cross-shaped dual-polarized oscillator is added, the high-frequency gain can be reduced by more than 1dBi, the cross polarization can be deteriorated, and the horizontal half-power wave width can be widened; when the cross dual-polarized vibrator is replaced by the cross dual-polarized vibrator with decoupling, the high-frequency gain is improved, the cross polarization is also improved, and the high-frequency radiation pattern is obviously improved.
In summary, compared with the prior art, the decoupled cross dual-polarized low-frequency oscillator of the embodiment has the following beneficial effects:
The vibrator arm adopts a cross structure, so that the low-frequency vibrator has no shielding to the high-frequency vibrator, and the mutual interference between the high frequency and the low frequency is small. Meanwhile, the parallel stub is added into the vibrator arm, and a resonant circuit is formed between the stub and the inner and outer frames of the vibrator arm, so that high-frequency current is prevented from flowing on the vibrator arm, the influence on a high-frequency directional diagram caused by the existence of a low-frequency vibrator is further reduced, and the isolation between high frequency and low frequency is improved. The antenna radiating unit has a simple structure, can realize excellent performance, and simultaneously enables the high-frequency and low-frequency vibrators to be interwoven, arranged and assembled to realize multifrequency design, so that the whole antenna product is easier to realize miniaturization and light weight.
Example 3
As shown in fig. 5, the present embodiment also provides an antenna using the above-described decoupled cross-type dual-polarized low-frequency oscillator, which includes a reflection plate 3, and a low-frequency oscillator 1 and a high-frequency oscillator 2 both mounted on the reflection plate 3. The high-frequency system is formed by equidistant linear arrangement of high-frequency vibrators of a 2x4 array to form an array unit of the two-beam system, and the low-frequency vibrators are arranged in the middle of the high-frequency system, so that projection of the high-frequency vibrators 2 and the low-frequency vibrators 1 on a bottom plate are not coincident, and decoupling arrangement on a low-frequency vibrator arm is added, so that mutual interference between high frequency and low frequency is small.
The embodiment also provides a design method, which comprises the following steps:
1. The vibrator arm is arranged to be of a cross structure, so that the low-frequency vibrator does not shade the high-frequency vibrator;
2. and a plurality of parallel short stubs are arranged on the oscillator arm, so that the parallel short stubs and the oscillator arm form a resonant circuit, and high-frequency current is prevented from flowing on the oscillator arm.
The design method of the embodiment has a one-to-one correspondence with the decoupled cross-shaped dual-polarized low-frequency oscillator, so that the design method has corresponding beneficial effects.
The foregoing detailed description of embodiments of the invention has been presented in conjunction with the drawings, and is not intended to limit the scope of the invention. It should be noted that, in addition to being realized with the printed circuit board in this example, it may also be realized with plastic plating, die casting or sheet metal; it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (9)
1. A decoupled dual polarized low frequency oscillator comprising:
A base board on which a first circuit is printed;
Two orthogonally spliced oscillator pieces, wherein a second circuit is printed on each oscillator piece, one end of each oscillator piece is fixed on the base plate, and the second circuit is electrically connected with the first circuit;
The radiating piece is fixed at the other end of the oscillator piece and comprises four oscillator arms which are not contacted with each other in pairs and are in a cross shape, the oscillator arms are in a W shape, two non-adjacent oscillator arms form a dipole, four oscillator arms form two orthogonal dipole radiation, and the oscillator arms are electrically connected with the second circuit;
The middle part of the oscillator arm is hollowed out to form a radiation groove, the radiation groove divides the oscillator arm into an outer frame and an inner frame, the outer frame is distributed on the outer side of the radiation groove, and the inner frame is distributed on the inner side of the radiation groove;
a plurality of parallel short stubs are arranged on the inner frame; and/or the number of the groups of groups,
And a plurality of parallel short stubs are arranged on the outer frame.
2. The decoupled dual polarized low frequency oscillator of claim 1 wherein the parallel stub has a line length of 0.12 to 0.3 wavelength of the high frequency center frequency;
the line length between two adjacent parallel short stubs on the outer frame is smaller than one half wavelength of the highest frequency of the high frequency; or alternatively, the first and second heat exchangers may be,
The line length between two adjacent parallel short stubs on the inner frame is smaller than one half wavelength of the highest frequency of the high frequency.
3. The decoupled dual polarized low frequency oscillator of claim 1, wherein the oscillator piece comprises a printed dielectric plate, the second circuit comprising a ground layer and a signal layer, the ground layer being printed on a first surface of the printed dielectric plate, the signal layer being printed on a second surface of the printed dielectric plate.
4. A decoupled dual polarized low frequency oscillator according to claim 3 wherein the ground layer is comprised of planar parallel twin wires, the upper end of the ground layer being electrically connected to the oscillator arm through the aperture of the radiating patch, the signal layer forming a loop by the planar parallel twin wires crossing the ground layer feeding the oscillator arm.
5. A decoupled dual polarized low frequency oscillator according to claim 1 wherein one of said oscillator pieces is slotted at its upper end and the other of said oscillator pieces is slotted at its lower end, said oscillator pieces being orthogonally nested.
6. An antenna comprising a reflector plate, a high frequency element and a low frequency element, said low frequency element employing a decoupled dual polarized low frequency element according to any of claims 1-5.
7. An antenna according to claim 6, characterized in that an antenna array unit is formed by 4 of said high frequency elements and 1 of said low frequency elements;
In one antenna array unit, 4 high-frequency vibrators are respectively arranged on four corners of the low-frequency vibrator, and each high-frequency vibrator corresponds to one vibrator arm of the low-frequency vibrator.
8. An antenna according to claim 6, characterized in that the high frequency system array unit is constituted by 2x4 arrays of said high frequency elements, the distances between said high frequency elements being equal, said low frequency element being placed in the middle of said high frequency system array unit.
9. A design method applied to a decoupled dual-polarized low frequency oscillator according to any one of claims 1-5, comprising the steps of:
the vibrator arm is arranged to be of a cross structure, so that the low-frequency vibrator does not shade the high-frequency vibrator;
And a plurality of parallel short stubs are arranged on the oscillator arm, so that the parallel short stubs and the oscillator arm form a resonant circuit, and high-frequency current is prevented from flowing on the oscillator arm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011416716.1A CN114614241B (en) | 2020-12-07 | 2020-12-07 | Decoupled dual-polarized low-frequency oscillator, antenna and method |
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| CN202011416716.1A CN114614241B (en) | 2020-12-07 | 2020-12-07 | Decoupled dual-polarized low-frequency oscillator, antenna and method |
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| CN114614241B true CN114614241B (en) | 2024-06-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025523A (en) * | 2016-08-09 | 2016-10-12 | 武汉虹信通信技术有限责任公司 | Radiating element of cross structure and antenna array thereof |
| CN210443665U (en) * | 2019-10-21 | 2020-05-01 | 南京澳博阳射频技术有限公司 | Radiating unit with 880-960MHz band filtering characteristic and base station antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051976A (en) * | 2013-02-26 | 2015-11-11 | 盖尔创尼克斯有限公司 | Dual-polarized dipole antenna and cruciform coupling element therefore |
| CN207947375U (en) * | 2018-01-10 | 2018-10-09 | 广东晖速通信技术股份有限公司 | A kind of Miniaturized low-frequency oscillator |
| CN109193176A (en) * | 2018-07-24 | 2019-01-11 | 广东博纬通信科技有限公司 | A kind of dual polarization low-frequency vibrator unit and multi-band array antenna |
| CN109037919B (en) * | 2018-08-02 | 2024-02-02 | 摩比天线技术（深圳）有限公司 | Vibrator assembly, vibrator unit and antenna |
| CN110265773A (en) * | 2019-07-12 | 2019-09-20 | 上海安费诺永亿通讯电子有限公司 | A kind of double horizontally polarized omnidirectional antennas of double frequency |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025523A (en) * | 2016-08-09 | 2016-10-12 | 武汉虹信通信技术有限责任公司 | Radiating element of cross structure and antenna array thereof |
| CN210443665U (en) * | 2019-10-21 | 2020-05-01 | 南京澳博阳射频技术有限公司 | Radiating unit with 880-960MHz band filtering characteristic and base station antenna |
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