CN112271447B - Millimeter wave magneto-electric dipole antenna - Google Patents
Millimeter wave magneto-electric dipole antenna Download PDFInfo
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- CN112271447B CN112271447B CN202010959034.9A CN202010959034A CN112271447B CN 112271447 B CN112271447 B CN 112271447B CN 202010959034 A CN202010959034 A CN 202010959034A CN 112271447 B CN112271447 B CN 112271447B
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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
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
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Abstract
The invention discloses a millimeter wave magnetic electric dipole antenna, which comprises a plurality of millimeter wave magnetic electric dipole units, wherein each millimeter wave magnetic electric dipole unit comprises a first dielectric plate, a second dielectric plate and a third dielectric plate, the millimeter wave magnetic electric dipole unit further comprises a plurality of metal through holes penetrating through the first dielectric plate, the second dielectric plate and the third dielectric plate, wherein: the first dielectric plate is provided with the microstrip line, and the upper surface of first dielectric plate is provided with feed paster and the radiation paster of being connected through the microstrip line, and first metal via passes the feed paster, and the second metal via passes the radiation paster, is provided with the stripline between second dielectric plate and the third dielectric plate, and first metal via still passes the stripline. This facilitates the miniaturized design of millimeter wave magneto-electric dipole antennas.
Description
Technical Field
The invention relates to the technical field of microwave communication, in particular to a millimeter wave magneto-electric dipole antenna.
Background
The rapid development of wireless communication technology makes the spectrum resources more intense, and millimeter wave antennas become an important trend of future development due to obvious spectrum resources and bandwidth advantages.
In recent years, millimeter wave technology has been increasingly applied, such as 5G communication, automobile autopilot, remote sensing navigation, and the like. The miniaturization of millimeter wave antenna systems is advantageous in that they can be applied to a wide variety of applications. Compared with the common ultra-wideband antenna, the millimeter wave magnetic electric dipole antenna has the advantages of high gain, low cross polarization, stable radiation characteristic and the like, so that the application of the magnetic electric dipole antenna is wider. Therefore, how to realize miniaturization of millimeter wave magneto-electric dipole antenna is a technical problem to be solved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the millimeter wave magnetic electric dipole antenna, which is favorable for realizing the miniaturization of the millimeter wave magnetic electric dipole antenna.
In order to solve the technical problems, the invention discloses a millimeter wave magnetic dipole antenna, which comprises a plurality of millimeter wave magnetic dipole units, wherein each millimeter wave magnetic dipole unit comprises a first dielectric plate, a second dielectric plate and a third dielectric plate, and the millimeter wave magnetic dipole unit also comprises a plurality of metal through holes penetrating through the first dielectric plate, the second dielectric plate and the third dielectric plate, wherein:
the first dielectric plate is arranged at one side of the millimeter wave magneto dipole unit, the first dielectric plate is provided with a microstrip line, the upper surface of the first dielectric plate is provided with a feeding patch and a radiation patch which are connected through the microstrip line, a first metal via hole penetrates through the feeding patch, a second metal via hole penetrates through the radiation patch,
the third dielectric plate is arranged on the other side of the millimeter wave magneto-electric dipole unit, the second dielectric plate is arranged between the first dielectric plate and the third dielectric plate,
and a strip line is arranged between the second dielectric plate and the third dielectric plate, and the first metal via hole also penetrates through the strip line.
In an alternative embodiment, in the present invention, the lower surface of the third dielectric plate is provided with a second copper-clad surface, the upper surface of the second dielectric is provided with a first copper-clad surface,
and the first dielectric plate is adhered to the second dielectric plate through a first prepreg, and the second dielectric plate is adhered to the third dielectric plate through a second prepreg.
As an alternative embodiment, in the present invention, the feeding patch extends in a longitudinal direction on an upper surface of the first dielectric plate.
As an alternative embodiment, in the present invention, the radiation patch includes a plurality of lateral radiation patch segments extending in a lateral direction and a plurality of longitudinal radiation patch segments distributed in a longitudinal direction, wherein:
the first transverse radiation patch segment is positioned on one side of the upper surface of the first dielectric plate, one end of the first transverse radiation patch segment is connected with one end of the first longitudinal radiation patch segment,
the other end of the first longitudinal radiation patch segment is connected with one end of the second transverse radiation patch segment,
the other end of the second transverse radiation patch segment is connected with one end of the second longitudinal radiation patch segment,
the other end of the second longitudinal radiating patch segment is separated from the other end of the first transverse radiating patch segment, and a first notch is formed.
In an alternative embodiment, in the present invention, a third transverse radiating patch segment is spaced apart from the second transverse radiating patch segment, one end of the third radiating patch segment is connected to one end of a third longitudinal radiating patch segment,
the other end of the third longitudinal radiation patch segment is connected with one end of a fourth transverse radiation patch segment,
the other end of the fourth transverse radiating patch segment is spaced from the other end of the fourth longitudinal radiating patch segment and forms a second notch.
In an alternative embodiment, the second longitudinal radiating patch section is connected to the fourth longitudinal radiating patch section by a fifth longitudinal radiating patch section.
In an alternative embodiment, the first and second longitudinal radiating patches are respectively provided with the second metal vias.
In an alternative embodiment, in the present invention, the first transverse radiation patch segment, the second transverse radiation patch segment, the third transverse radiation patch segment, the fourth transverse radiation patch segment, the first longitudinal radiation patch segment, the second longitudinal radiation patch segment, the third longitudinal radiation patch segment, the fourth longitudinal radiation patch segment, and the fifth longitudinal radiation patch segment form a radiation patch segment group, and the radiation patch segment groups are symmetrically distributed on the upper surface of the first dielectric plate.
In an alternative embodiment, in the present invention, the millimeter wave magneto-electric dipole units are arranged in an array.
In an alternative embodiment, in the present invention, electromagnetic waves are transmitted from the cavity formed by the second dielectric plate, the third dielectric plate and the first metal via to the millimeter wave magneto-electric dipole unit through a waveguide.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the electromagnetic energy transmission path of the millimeter wave magnetic dipole unit of the millimeter wave magnetic dipole antenna in the embodiment of the invention is as follows: the strip line-first metal via hole (namely the feed metal via hole) -feed patch is beneficial to the design of a feed network and the integration of the feed network and an antenna; the feed network is integrated into the millimeter wave magnetic electric dipole antenna, so that the miniaturization design of the millimeter wave magnetic electric dipole antenna is facilitated, and the popularization and the application of the millimeter wave magnetic electric dipole antenna are facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure of a millimeter wave magneto-electric dipole unit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a radiating patch and a feeding patch of an embodiment of the present invention;
FIG. 3 is a schematic view of a lower surface of a third dielectric plate according to an embodiment of the present invention;
fig. 4 is a schematic diagram showing the arrangement of millimeter wave magneto-electric dipole units according to an embodiment of the present invention;
fig. 5 is a graph of gain variation of a millimeter wave magneto-electric dipole antenna of an embodiment of the present invention over a frequency band;
fig. 6 is a graph of the operating bandwidth of a millimeter wave magneto-electric dipole antenna in accordance with an embodiment of the present invention;
fig. 7 is a center frequency point pattern of the millimeter wave magneto-electric dipole antenna of the embodiment of the present invention when operating in the 26GHz band.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
References in the specification and claims to an orientation, such as an orientation or positional relationship indicated above, below, longitudinal, transverse, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the invention, and do not indicate or imply that the device or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the invention.
The terms first, second and the like in the description and in the claims, are used for distinguishing between different objects and not for describing a particular sequential order.
The millimeter wave magneto dipole antenna of the embodiment of the invention comprises a plurality of millimeter wave magneto dipole units, as shown in fig. 1, wherein each millimeter wave magneto dipole unit comprises a first dielectric plate 100, a second dielectric plate 200 and a third dielectric plate 300, and further comprises a plurality of metal through holes penetrating through the first dielectric plate 100, the second dielectric plate 200 and the third dielectric plate 300, wherein:
the first dielectric plate 100 is disposed at one side of the millimeter wave magneto-electric dipole unit, the first dielectric plate 100 is provided with a microstrip line (not shown in the drawing), the upper surface of the first dielectric plate 100 is provided with a feeding patch 500 and a radiation patch 400 connected by the microstrip line, a first metal via 501 passes through the feeding patch 500, a second metal via 401 passes through the radiation patch 400,
the third dielectric plate 300 is disposed at the other side of the millimeter wave magneto-electric dipole unit, the second dielectric plate 200 is disposed between the first dielectric plate 100 and the third dielectric plate 300,
a strip line (not shown in the figure) is disposed between the second dielectric plate 200 and the third dielectric plate 300, and the first metal via 501 also passes through the strip line.
In the embodiment of the invention, when the electromagnetic energy outside the millimeter wave magneto-electric dipole unit is transmitted to the strip line, the electromagnetic energy is transmitted to the feeding patch through the first metal via hole (namely the feeding metal via hole), namely, the transmission process of the electromagnetic energy from the strip line to the first metal via hole and to the feeding patch is realized; electromagnetic energy of the feed patch is coupled to the radiating patch. Therefore, the electromagnetic energy transmission path of the millimeter wave magneto dipole unit of the millimeter wave magneto dipole antenna in the embodiment of the invention is as follows: the strip line-first metal via (i.e., feed metal via) -feed patch is beneficial to feed network design and feed network integration with the antenna; the feed network is integrated into the millimeter wave magnetic electric dipole antenna, so that the miniaturization design of the millimeter wave magnetic electric dipole antenna is facilitated, and the popularization and the application of the millimeter wave magnetic electric dipole antenna are facilitated.
In the embodiment of the invention, the radiation patch can be equivalent to the electric dipole of the millimeter wave magnetic electric dipole unit, and the second metal via hole is arranged on the radiation patch, and penetrates through the first dielectric plate, the second dielectric plate and the third dielectric plate, so that the corresponding three-dimensional structure is a columnar cavity, and the structure can be equivalent to the magnetic dipole of the millimeter wave magnetic electric dipole unit.
In the embodiment of the invention, optionally, a plurality of millimeter wave magnetic dipole units are arranged in an array. Specifically, the millimeter wave magneto-electric dipole units 1 may be arranged in a matrix of 4×4 as shown in fig. 3 within the millimeter wave magneto-electric dipole antenna.
In an embodiment of the present invention, as shown in fig. 1 and 4, optionally, electromagnetic waves are transmitted to the millimeter wave magneto-electric dipole unit through a waveguide from a cavity (not shown in the drawings) formed by the second dielectric plate 200, the third dielectric plate 300 and the first metal via 501. The electromagnetic energy transmission path of the millimeter wave magneto dipole unit of the millimeter wave magneto dipole antenna of the embodiment of the invention is as follows: waveguide-stripline-first metal via (i.e., feed metal via) -feed patch.
In an embodiment of the present invention, optionally, as shown in fig. 2, the feeding patch 500 extends longitudinally on the upper surface of the first dielectric plate (not shown in the figure).
In an embodiment of the present invention, optionally, the radiating patch 400 includes a plurality of transverse radiating patches segments extending in a transverse direction and a plurality of longitudinal radiating patches segments distributed in a longitudinal direction, as shown in figure 2,
the first transverse radiation patch 411 is located at one side of the upper surface of the first dielectric plate, one end of the first transverse radiation patch 411 is connected with one end of the first longitudinal radiation patch 421, the other end of the first longitudinal radiation patch 421 is connected with one end of the second transverse radiation patch 412, the other end of the second transverse radiation patch 412 is connected with one end of the second longitudinal radiation patch 422, and the other end of the second longitudinal radiation patch 422 is separated from the other end of the first transverse radiation patch 411 and forms a first notch.
It can be seen that, in the embodiment of the present invention, the radiation patch includes a plurality of transverse radiation patches extending in a transverse direction and a plurality of longitudinal radiation patches distributed in a longitudinal direction, that is, the radiation patch is bent, which is advantageous to extend a current path by arranging the bent radiation patch under the condition of the same surface area, thereby being advantageous to miniaturization of the millimeter wave magneto dipole unit and further advantageous to miniaturization of the millimeter wave magneto dipole antenna. The arrangement of the first notch is beneficial to forming a new resonance point, thereby being beneficial to widening the bandwidth.
In a further alternative embodiment of the present invention, as shown in fig. 2, a third transverse radiating patch 413 is spaced apart from the second transverse radiating patch 412, one end of the third transverse radiating patch is connected to one end of the third longitudinal radiating patch 423, the other end of the third longitudinal radiating patch 423 is connected to one end of the fourth transverse radiating patch 414, and the other end of the fourth transverse radiating patch 414 is spaced apart from the other end of the fourth longitudinal radiating patch 424, and a second notch is formed.
In yet a further alternative embodiment of the present invention, as shown in fig. 2, the second longitudinal radiating patch 422 is connected to the fourth longitudinal radiating patch 424 by a fifth longitudinal radiating patch 425.
In an embodiment of the present invention, as shown in fig. 2, a second metal via 401 is disposed on each of the first longitudinal radiating patch 421 and the second longitudinal radiating patch 422.
In an embodiment of the present invention, as shown in fig. 2, the first transverse radiation patch 411, the second transverse radiation patch 412, the third transverse radiation patch 413, the fourth transverse radiation patch 414, the first longitudinal radiation patch 421, the second longitudinal radiation patch 422, the third longitudinal radiation patch 423, the fourth longitudinal radiation patch 424, and the fifth longitudinal radiation patch 425 form a radiation patch group, and the radiation patch groups are symmetrically distributed on the upper surface of the first dielectric plate.
In the embodiment of the invention, the shape of the radiation patch, the structural parameters of the metal via hole and the like are optimally designed, so that the performance of the millimeter wave magneto-electric dipole antenna can be optimized. Specifically, through the optimal design, as shown in fig. 5 and 6, the millimeter wave magneto-electric dipole antenna can achieve the gain of 6.7dB + -0.7 dB at 22GHz to 28.5GHz, that is, the millimeter wave magneto-electric dipole antenna has the characteristics of low gain, wide bandwidth and low back lobe, as shown in fig. 7, when the frequency band of 26GHz works, the bandwidth of the electric field plane (E plane) and the magnetic field plane (H plane) of the millimeter wave magneto-electric dipole antenna is between 80 degrees and 100 degrees, and the millimeter wave magneto-electric dipole antenna has better directional diagram consistency.
In some embodiments of the invention, the lower surface of the third dielectric plate is provided with a second copper-clad surface, the upper surface of the second dielectric is provided with a first copper-clad surface,
and the first dielectric plate is bonded with the second dielectric plate through the first prepreg, and the second dielectric plate is bonded with the third dielectric plate through the second prepreg.
In this embodiment, the strip line is connected to the first copper-clad surface through a second metal via such that the strip line is grounded, thereby enabling a loop to be formed when electromagnetic energy is transmitted to the strip line; the microstrip line is connected with the radiation patch, and the second metal via hole on the radiation patch is connected with the first copper-clad surface, so that the microstrip line is grounded, and a loop can be formed when electromagnetic energy is transmitted to the microstrip line, and compared with an external ground wire, the microstrip line is favorable for reasonable utilization of space, and miniaturization of the millimeter wave magnetic electric dipole unit is facilitated.
In this embodiment, the lower surface of the third dielectric plate is provided with a second copper-clad surface, which can be used to adjust the impedance matching of the whole millimeter wave magneto-electric dipole antenna. Alternatively, a copper-clad blank area may be adjusted on the second copper-clad surface, for example, an annular copper-clad blank area 301 shown in fig. 4 is formed, so as to adjust the overall impedance matching of the millimeter wave magneto-electric dipole antenna.
In this embodiment, by providing the first prepreg and the second prepreg, the first dielectric plate, the second dielectric plate, and the third dielectric plate can be bonded into a whole, which is advantageous for the arrangement of the millimeter wave magneto dipole unit in the millimeter wave magneto dipole antenna.
Finally, it should be noted that: the embodiment of the invention discloses a millimeter wave magneto-electric dipole antenna which is disclosed as a preferred embodiment of the invention, and is only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (9)
1. The millimeter wave magneto dipole antenna is characterized by comprising a plurality of millimeter wave magneto dipole units, wherein each millimeter wave magneto dipole unit comprises a first dielectric plate, a second dielectric plate and a third dielectric plate, and each millimeter wave magneto dipole unit further comprises a plurality of metal through holes penetrating through the first dielectric plate, the second dielectric plate and the third dielectric plate, wherein:
the first dielectric plate is arranged at one side of the millimeter wave magneto dipole unit, the first dielectric plate is provided with a microstrip line, the upper surface of the first dielectric plate is provided with a feeding patch and a radiation patch which are connected through the microstrip line, a first metal via hole penetrates through the feeding patch, a second metal via hole penetrates through the radiation patch,
the third dielectric plate is arranged on the other side of the millimeter wave magneto-electric dipole unit, the second dielectric plate is arranged between the first dielectric plate and the third dielectric plate,
a strip line is arranged between the second dielectric plate and the third dielectric plate, and the first metal via hole also penetrates through the strip line;
the lower surface of the third dielectric plate is provided with a second copper-clad surface, the upper surface of the second dielectric plate is provided with a first copper-clad surface,
and the first dielectric plate is adhered to the second dielectric plate through a first prepreg, and the second dielectric plate is adhered to the third dielectric plate through a second prepreg.
2. The millimeter wave magneto-electric dipole antenna according to claim 1, wherein said feed patch extends longitudinally on an upper surface of said first dielectric plate.
3. The millimeter wave magneto-electric dipole antenna according to claim 1, wherein said radiating patch comprises a plurality of laterally radiating patches segments extending in a lateral direction and a plurality of longitudinally radiating patches segments distributed in a longitudinal direction, wherein:
the first transverse radiation patch segment is positioned on one side of the upper surface of the first dielectric plate, one end of the first transverse radiation patch segment is connected with one end of the first longitudinal radiation patch segment,
the other end of the first longitudinal radiation patch segment is connected with one end of the second transverse radiation patch segment,
the other end of the second transverse radiation patch segment is connected with one end of the second longitudinal radiation patch segment,
the other end of the second longitudinal radiating patch segment is separated from the other end of the first transverse radiating patch segment, and a first notch is formed.
4. The millimeter wave magneto-electric dipole antenna according to claim 3, wherein a third transverse radiating patch segment is spaced apart from said second transverse radiating patch segment, wherein an end of said third transverse radiating patch segment is connected to an end of a third longitudinal radiating patch segment,
the other end of the third longitudinal radiation patch segment is connected with one end of a fourth transverse radiation patch segment,
the other end of the fourth transverse radiation patch segment is separated from the other end of the fourth longitudinal radiation patch segment, and a second notch is formed.
5. The millimeter wave magneto-electric dipole antenna according to claim 4, wherein said second longitudinal radiating patch section and said fourth longitudinal radiating patch section are connected by a fifth longitudinal radiating patch section.
6. The mmwave magneto-electric dipole antenna of claim 5, wherein the first longitudinal radiating patch segment and the second longitudinal radiating patch segment are each provided with the second metal via.
7. The millimeter wave magneto-electric dipole antenna according to claim 6, wherein said first transverse radiating patch, said second transverse radiating patch, said third transverse radiating patch, said fourth transverse radiating patch, said first longitudinal radiating patch, said second longitudinal radiating patch, said third longitudinal radiating patch, said fourth longitudinal radiating patch, and said fifth longitudinal radiating patch comprise a radiating patch set, said radiating patch set being symmetrically distributed on an upper surface of said first dielectric sheet.
8. The mmwave magnetoelectrical dipole antenna of any of claims 1-7, wherein said plurality of mmwave magnetoelectrical dipole elements are arranged in an array.
9. The millimeter wave magneto-electric dipole antenna according to any one of claims 1-7, wherein electromagnetic waves are transmitted to said millimeter wave magneto-electric dipole element through a waveguide from a cavity formed by said second dielectric plate, said third dielectric plate and said first metal via.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010959034.9A CN112271447B (en) | 2020-09-14 | 2020-09-14 | Millimeter wave magneto-electric dipole antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010959034.9A CN112271447B (en) | 2020-09-14 | 2020-09-14 | Millimeter wave magneto-electric dipole antenna |
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| CN112271447A CN112271447A (en) | 2021-01-26 |
| CN112271447B true CN112271447B (en) | 2023-09-15 |
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| CN112271447A (en) | 2021-01-26 |
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