CN107732445B - Millimeter wave circularly polarized array antenna and radiator thereof - Google Patents
Millimeter wave circularly polarized array antenna and radiator thereof Download PDFInfo
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- CN107732445B CN107732445B CN201710872449.0A CN201710872449A CN107732445B CN 107732445 B CN107732445 B CN 107732445B CN 201710872449 A CN201710872449 A CN 201710872449A CN 107732445 B CN107732445 B CN 107732445B
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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
- 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
-
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a millimeter wave circularly polarized array antenna and a radiator thereof, wherein the antenna comprises a first dielectric substrate, a second dielectric substrate, a first floor, a feed network and a radiator, wherein the radiator, the first dielectric substrate, the first floor, the second dielectric substrate and the feed network are sequentially arranged from top to bottom, the radiator comprises a radiation plate and a plurality of radiation units arranged on the radiation plate, each radiation unit comprises four short-circuit patches, two short-circuit patches are diagonally arranged and loaded with L-shaped branches, and the other two short-circuit patches are diagonally arranged and provided with corner cutting parts; each radiation unit is connected with the first floor through a through hole penetrating through the first dielectric substrate. The millimeter wave circularly polarized array antenna has longer bandwidth, larger gain and wider circularly polarized axial ratio, has simple structure and can meet the requirement of a worker department on planning a broadband wireless access system (42.3-48.4 GHz) for millimeter wave frequency band mobile services.
Description
Technical Field
The invention relates to an array antenna, in particular to a millimeter wave circularly polarized array antenna and a radiator thereof, belonging to the field of wireless communication.
Background
With the vigorous development of wireless communication technology, the low-frequency electromagnetic spectrum resources increasingly tend to be exhausted. To meet the challenge of 5G (the 5th Generation) high-speed communication, it is necessary to develop spectrum resources of millimeter wave band. Circular polarized antennas have many distinct advantages over linear polarized antennas, such as anti-multipath reflection, avoidance of polarization mismatch, and flexible alignment of the receiving and transmitting antennas. Communication in the millimeter wave band is affected by high free space transmission loss, atmospheric absorption, and the like, so that a millimeter wave antenna system generally requires high gain to compensate for attenuation of electromagnetic wave energy. By forming the millimeter wave antennas into an array, high gain output of the antenna system can be achieved. As far as the current domestic reports exist, few millimeter wave 16-element array antennas working in the frequency range of 42.3-48.4GHz are adopted, and the number of circularly polarized polarization modes is reduced. Most of the conventional millimeter wave circularly polarized antennas have narrow axial ratio bandwidth or are excessively complex in structure and are not suitable for large-scale array application. Therefore, it is necessary to design a millimeter wave circularly polarized array antenna with simple structure, high gain, and wide impedance bandwidth and axial ratio bandwidth.
The prior art has been investigated and understood as follows:
in 2016, yujian Li, kwai-Man Luk et al, publication "IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION" entitled "A60-GHz Wideband Circularly Polarized Aperture-Coupled magnetic-Electric Dipole Antenna Array," a circularly polarized electromagnetic dipole antenna array was fed by SIW slot feeding. The whole antenna uses three layers of dielectric substrates, all the dielectric substrates are coupled through gaps, so that very wide axial ratio bandwidth and impedance bandwidth are realized, and the gain in the working frequency band exceeds 24dBi. However, due to the adoption of the SIW feed structure, the whole feed network is quite complex in structure and huge in volume, and in order to realize the design of the array, the whole antenna is necessarily constructed on three layers of dielectric substrates.
In 2016, Q.Zhu, K.B.Ng, C.H.Chan, et al, in the publication "IEEE TRANSACTIONS ON ANTENNAS AND process Application" titled "Printed Circularly Polarized Spiral Antenna Array for Millimeter-Wave Application," the antenna is fed by a SIW slot, and a 4*4-element circularly polarized array antenna is formed by three dielectric plates, and the antenna radiator is formed by a planar double helix, and has a very wide axial ratio bandwidth and impedance bandwidth. But the structure of the antenna becomes very complicated due to the three dielectric plates.
Disclosure of Invention
The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a radiator that implements circular polarization radiation characteristics by loading L-shaped stubs on two of diagonally-disposed short-circuit patches of each radiating element and performing corner cutting processing on the other two diagonally-disposed short-circuit patches, and that implements a wide impedance bandwidth and axial ratio bandwidth.
The invention also aims to provide the millimeter wave circularly polarized array antenna which has the characteristics of easy processing, high gain, small volume, low cost, wide frequency band and wide axial ratio, and can be applied to a broadband wireless access system in domestic millimeter wave frequency band mobile service.
The aim of the invention can be achieved by adopting the following technical scheme:
the utility model provides a radiator, includes the radiation board and sets up a plurality of radiating element on the radiation board, every radiating element includes four short circuit paster, and wherein two short circuit paster diagonal setting and loading have L shape minor matters, and other two short circuit paster diagonal setting and have the corner cut.
Further, the number of the radiating units is sixteen, and sixteen radiating units are arranged on the radiating plate in a mode of four rows and four columns.
The other object of the invention can be achieved by adopting the following technical scheme:
the utility model provides a millimeter wave circular polarization array antenna, includes first dielectric substrate, second dielectric substrate, first floor, feed network and foretell radiator, first dielectric substrate, first floor, second dielectric substrate and feed network from the top down set gradually, every radiating element in the radiator is all connected with first floor through the through-hole that runs through first dielectric substrate.
Further, a plurality of gaps are etched on the first floor, and the number of the gaps corresponds to the number of the radiating units in the radiator.
Further, the feed network includes a plurality of first power splitters for exciting the radiating elements in the radiator, and a second power splitter connected to the plurality of first power splitters, respectively, for equally splitting electromagnetic energy fed from the microwave connector to the plurality of first power splitters.
Further, each first power divider comprises a plurality of L-shaped bent microstrip feed lines.
Further, a Z-shaped bending microstrip feeder line is arranged at the connection part of the second power divider and each first power divider.
Further, the antenna further comprises a second floor, the second floor and the feed network are located on the same plane, and the second floor is connected with the first floor through a through hole penetrating through the second dielectric substrate.
Further, the second floor comprises two copper-clad sheets, and the two copper-clad sheets are arranged at the joints of the microwave connector and the feed network.
Further, the two copper-clad sheets are connected with the first floor board through ten through holes penetrating through the second dielectric substrate respectively.
Compared with the prior art, the invention has the following beneficial effects:
1. the radiator is provided with four radiating units, L-shaped branches are loaded on two diagonally-arranged short-circuit patches of each radiating unit, and the other two diagonally-arranged short-circuit patches are subjected to corner cutting treatment, so that circular polarization radiation characteristics are realized, and a very wide impedance bandwidth and an axial ratio bandwidth are realized through the corner cutting treatment.
2. Compared with the design of the prior art, the millimeter wave circularly polarized array antenna only adopts two layers of dielectric substrates, the characteristic of high gain of the broadband wide axis ratio of the antenna array can be maintained on the basis of simplifying the structure of the antenna, and each radiating unit in the included radiator can be improved to obtain the circularly polarized array with the broadband wide axis ratio on the basis of the original linearly polarized antenna by loading the L-shaped branches and the chamfer angles.
3. The feed network in the millimeter wave circularly polarized array antenna is provided with a plurality of first power distributors and second power distributors, each first power distributor is used for exciting a radiation unit in a radiator, and an L-shaped bending microstrip feeder line is introduced into the first power distributor to feed the radiation unit in a constant-amplitude and same-phase manner; the second power divider is used for equally dividing electromagnetic energy fed from the microwave connector to each first power divider, and Z-shaped bending microstrip feeder lines are introduced at the connection positions of the second power divider and the first power divider, so that the compactness of the feeder network is improved, and meanwhile, the distance between adjacent microstrip feeder lines is increased, and the coupling is reduced.
4. The millimeter wave circularly polarized array antenna feeds the array in an in-phase feeding mode, does not need to continuously rotate a feed network, not only increases the compactness of the feed network, but also greatly reduces the design difficulty of the feed network.
5. In the millimeter wave circularly polarized array antenna, the floor which is in the same plane with the feed network can be arranged, and the floor is connected with the floor between the two layers of dielectric substrates, so that the loss enhancement matching can be reduced.
6. In the millimeter wave circularly polarized array antenna, the floor board on the same plane with the feed network comprises the microwave connector and the two copper-clad sheets arranged at the joint of the microwave connector and the feed network, and the two copper-clad sheets are connected with the floor board between the two layers of medium substrates through the through holes, so that the matching between the microwave connector and the feed network can be regulated, and the loss is effectively reduced.
7. The simulation result of the millimeter wave circularly polarized array antenna shows that the values of the gain curves are larger than 18dB in the frequency range of 41 GHz-49.7 GHz, and the millimeter wave circularly polarized array antenna has higher gain.
8. The millimeter wave circularly polarized array antenna can be processed by adopting a standard PCB processing technology, has low cost, high yield and simple manufacturing process, and can meet the requirement of the millimeter wave antenna on low manufacturing cost.
9. The millimeter wave circularly polarized array antenna has the advantages of simple structure, low section and small size, has fewer parameters to be adjusted, is easy to process and design, and is suitable for engineering application.
Drawings
Fig. 1 is a perspective view of a millimeter wave circularly polarized array antenna of embodiment 1 of the present invention.
Fig. 2 is a structural layered diagram of a millimeter wave circularly polarized array antenna according to embodiment 1 of the present invention.
Fig. 3 is a structural view of layers of the radiator of embodiment 1 of the present invention.
Fig. 4 is an enlarged view at a in fig. 3.
Fig. 5 is a structural view of the floor according to embodiment 1 of the present invention.
Fig. 6 is an enlarged view at B in fig. 5.
Fig. 7 is a block diagram of a layer of a feed network in embodiment 1 of the present invention.
Fig. 8 is an enlarged view at C in fig. 7.
Fig. 9 is a view of fig. 7 at D.
Fig. 10 is a return loss curve of the millimeter wave circularly polarized array antenna of embodiment 1 of the present invention.
Fig. 11 is a graph showing the axial ratio of the millimeter wave circularly polarized array antenna according to embodiment 1 of the present invention as a function of frequency.
Fig. 12 is a graph showing the gain of the millimeter wave circularly polarized array antenna according to embodiment 1 of the present invention as a function of frequency.
Fig. 13 is a 45GHz E-plane pattern of the millimeter wave circularly polarized array antenna of embodiment 1 of the present invention.
Fig. 14 is a 45GHz H-plane pattern of the millimeter wave circularly polarized array antenna of embodiment 1 of the present invention.
The antenna comprises a 1-radiator, an 11-radiation plate, a 12-radiation unit, 121-a first short-circuit patch, 122-a second short-circuit patch, 123-a third short-circuit patch, 124-a fourth short-circuit patch, 125-L-shaped branches, 126-corner cutting parts, 2-a first dielectric substrate, 3-a first floor, 31-gaps, 4-a second dielectric substrate, a 5-feed network, 51-a feed plate, 52-a first power distributor, 521-L-shaped bent microstrip feed lines, 522-T-shaped structures, 53-a second power distributor, 54-Z-shaped bent microstrip feed lines, 6-first through holes, 7-second through holes, 8-third through holes, 9-fourth through holes, 10-a second floor, 101-first copper clad sheets, 102-second copper clad sheets and 11-fifth through holes.
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 and 2, the present embodiment provides a millimeter wave circularly polarized array antenna, which is a 4*4 array antenna, and includes a radiator 1, a first dielectric substrate 2, a first floor 3, a second dielectric substrate 4, and a feed network 5 sequentially disposed from top to bottom, so that a five-layer structure is formed, where the radiator 1 is located in a first layer, the first dielectric substrate 2 is located in the first layer, the first floor 3 is located in a third layer, the second dielectric substrate 4 is located in a fourth layer, and the feed network 5 is located in a fifth layer.
The first dielectric substrate 2 and the second dielectric substrate 4 are both made of PCB boards, but are made of materials with different dielectric constants and different loss tangents, and the materials can be any two of FR-4, polyimide, polytetrafluoroethylene glass cloth and co-fired ceramics.
As shown in fig. 1 to fig. 4, the radiator 1 includes a radiation plate 11 and sixteen radiation units 12, the radiation plate 11 is attached to the upper layer of the first dielectric substrate 2, the sixteen radiation units 12 have the same structure and are arranged on the radiation plate 11 in a four-row four-column manner, each radiation unit 12 includes a first short-circuit patch 121, a second short-circuit patch 122, a third short-circuit patch 123 and a fourth short-circuit patch 124, the first short-circuit patch 121 and the third short-circuit patch 123 are mirror-symmetrical, and are diagonally arranged, so as to form a pair of dipole antenna units, and the second short-circuit patch 122 and the fourth short-circuit patch 124 are mirror-symmetrical, and are diagonally arranged, so as to form another pair of dipole antenna units; in order to realize the circular polarization radiation characteristic, by loading the L-shaped branches 125 on the first short-circuit patch 121 and the third short-circuit patch 123 and performing corner cutting treatment on the second short-circuit patch 122 and the fourth short-circuit patch 124, a corner cut 126 is formed, and as can be seen from fig. 4, the second short-circuit patch 122 and the fourth short-circuit patch 124 have pentagonal structures after the corner cutting treatment, a very wide impedance bandwidth and an axial ratio bandwidth can be realized through the corner cutting treatment; in order to realize the short-circuiting of the first short-circuiting patch 121, the second short-circuiting patch 122, the third short-circuiting patch 123 and the fourth short-circuiting patch 124, the first short-circuiting patch 121 is connected to the first floor 3 through the first through hole 6 penetrating the first dielectric substrate 2, the second short-circuiting patch 122 is connected to the first floor 3 through the second through hole 7 penetrating the first dielectric substrate 2, the third short-circuiting patch 123 is connected to the first floor 3 through the third through hole 8 penetrating the first dielectric substrate 2, and the fourth short-circuiting patch 124 is connected to the first floor 3 through the fourth through hole 9 penetrating the first dielectric substrate 2.
As shown in fig. 1, 2, 5 and 6, sixteen slits 31 are etched on the first floor 3 to correspond to sixteen radiation units 12, the sixteen slits 31 have the same structure and a rectangular structure, and are arranged on the first floor 3 in the same manner as the radiation units 12 in four rows and four columns, the row spacing is X, the column spacing is Y, and the sixteen radiation units 12 have the same row spacing and column spacing.
As shown in fig. 1, fig. 2, and fig. 7 to fig. 9, the feeding network 5 includes a feeding board 51, a first power divider 52 and a second power divider 53, the feeding board 51 is attached to the lower layer of the second dielectric substrate 4, the first power divider 52 and the second power divider 53 are disposed on the feeding board 51, the first power divider 52 is four, the four first power dividers 52 are all large and one-fourth microstrip power dividers, each first power divider 52 is used for exciting the four radiating units 12 in the radiator 1, and includes four L-shaped bent microstrip feeding lines 521 and three T-shaped structures 522, the L-shaped bent microstrip feeding lines 521 are introduced for feeding the radiating units in phase at equal amplitude, each T-shaped structure is a one-second T-shaped structure, the three T-shaped structures 522 are respectively marked as a first T-shaped structure, a second T-shaped structure and a third T-shaped structure, two paths of the first T-shaped structure are respectively connected with two microstrip feeding lines 521, two paths of the second T-shaped structure are respectively connected with two other microstrip feeding lines 521, and the third T-shaped structure is connected with the second microstrip feeding lines 53; the second power divider 53 adopts a small quarter microstrip power divider for equally dividing electromagnetic energy fed from a microwave connector into four first power dividers 52, and a Z-shaped bending microstrip feeder 54 is arranged at the connection part of the second power divider 53 and each first power divider 52, namely, at the connection part of the third T-shaped structure of the second power divider 53, so that the Z-shaped bending microstrip feeder 54 is introduced, which contributes to improving the compactness of the feeding network 5, and increases the distance between adjacent microstrip feeders and reduces the coupling.
As shown in fig. 1, 2, 5 and 7, in order to reduce loss and enhance matching, the millimeter wave circularly polarized array antenna of the present embodiment further includes a second floor 10, where the second floor 10 and the feed network 5 are located on the same plane, that is, the second floor 10 is also located on a fifth layer, and the second floor 10 includes a first copper clad sheet 101 and a second copper clad sheet 102, where the first copper clad sheet 101 and the second copper clad sheet 102 are both rectangular structures, and are disposed at a connection position between a microwave connector and the feed network 5, specifically at a connection position between the microwave connector and the second power divider 53, where the first copper clad sheet 101 and the second copper clad sheet 102 are respectively connected with the first floor 3 through ten fifth through holes 11 (that is, twenty fifth through holes 11 share) penetrating through the second dielectric substrate 4, so that matching between the microwave connector and the feed network 5 can be adjusted, and loss is effectively reduced.
In the above embodiment, the radiator 1, the first floor 3 and the feeding network 5 are all made of metal materials, and the metal materials 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.
After the dimensional parameters of each part of the millimeter wave circularly polarized array antenna of the embodiment are adjusted, verification simulation is carried out on the millimeter wave circularly polarized array antenna of the embodiment through calculation and electromagnetic field simulation, as shown in fig. 10, the |S of the antenna in the frequency range of 40 GHz-50 GHz is given 11 Curves of simulation results of the i parameters (input port return loss); it can be seen that in the range of 40 GHz-50 GHz band, |S 11 The values of the I curves are smaller than-10 dB, and simulation results show that the millimeter wave circularly polarized array antenna of the embodiment has wider impedance bandwidth. As shown in FIG. 11, a simulation result curve of the axial ratio of the antenna in the frequency range of 41 GHz-50 GHz along with the frequency is given; as can be seen, in the frequency range of 41.4 GHz-49.3 GHz, the values of the axial ratio curves are smaller than 3dB, and simulation results show that the millimeter wave circularly polarized array antenna of the embodiment has wider axial ratio bandwidth. As shown in FIG. 12, a simulation result curve of the gain of the array antenna in the frequency range of 41 GHz-50 GHz along with the frequency is given; as can be seen, in the frequency range of 41 GHz-49.7 GHz, the values of the gain curves are all larger than 18dB, and simulation results show that the millimeter wave circularly polarized array antenna of the embodiment has higher gain.
The radiation patterns of the HFSS simulation model of the millimeter wave circularly polarized array antenna of the embodiment at 45GHz are shown in fig. 13 and 14, the upper curve is the left-hand circularly polarized pattern, the gray line is the right-hand circularly polarized pattern, and it can be seen that the array antenna pattern has smaller side lobes and a symmetrical structure, and the cross polarization is very low.
Example 2:
the millimeter wave circularly polarized array antenna in this embodiment may also be a 5*5 array antenna, a 6*6 array antenna, or an array antenna with different rows and columns, such as a 4*6 array antenna, a 6*8 array antenna, etc., where the number of the radiating elements 12, the slots 31, and the first power divider 52 need to be adjusted accordingly. The procedure is as in example 1.
In summary, the millimeter wave circularly polarized array antenna has longer bandwidth, larger gain and wider circularly polarized axial ratio, has simple structure, and can meet the requirement of the industrial signal department planning for a broadband wireless access system (42.3-48.4 GHz) in millimeter wave frequency band mobile service.
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 (5)
1. The millimeter wave circularly polarized array antenna is characterized in that: the novel antenna comprises a first dielectric substrate, a second dielectric substrate, a first floor, a feed network and a radiator, wherein the radiator, the first dielectric substrate, the first floor, the second dielectric substrate and the feed network are sequentially arranged from top to bottom, and each radiating unit in the radiator is connected with the first floor through a through hole penetrating through the first dielectric substrate;
the radiator comprises a radiation plate and sixteen radiation units arranged on the radiation plate, the sixteen radiation units are arranged on the radiation plate in a mode of four rows and four columns, each radiation unit comprises four short-circuit patches, two short-circuit patches are diagonally arranged and loaded with L-shaped branches, and the other two short-circuit patches are diagonally arranged and provided with corner cutting parts;
the feed network comprises a feed plate, a first power distributor and a second power distributor, wherein the feed plate is attached to the lower layer of a second medium substrate, the first power distributor and the second power distributor are arranged on the feed plate, the number of the first power distributors is four, the four first power distributors are all divided into four microstrip power distributors, each first power distributor is used for exciting four radiating units in a radiator and comprises four L-shaped bending microstrip feed lines and three T-shaped structures, each T-shaped structure is divided into two T-shaped structures, the three T-shaped structures are respectively marked as a first T-shaped structure, a second T-shaped structure and a third T-shaped structure, two output ends of the first T-shaped structure are respectively connected with two L-shaped bending microstrip feed lines, two output ends of the second T-shaped structure are respectively connected with other two L-shaped microstrip feed lines, and two output ends of the third T-shaped structure are respectively connected with input ends of the first T-shaped structure and the second T-shaped structure; the second power divider adopts a quarter microstrip power divider and is used for equally dividing electromagnetic energy fed in from the microwave connector into four first power dividers, and a Z-shaped bending microstrip feeder line is connected between each output end of the second power divider and the input end of the third T-shaped structure of each first power divider.
2. The millimeter wave circularly polarized array antenna of claim 1, wherein: sixteen gaps are etched on the first floor, and sixteen gaps correspond to sixteen radiation units.
3. A millimeter wave circularly polarized array antenna according to any one of claims 1-2, wherein: the antenna also comprises a second floor, the second floor and the feed network are positioned on the same plane, and the second floor is connected with the first floor through a through hole penetrating through the second dielectric substrate.
4. A millimeter wave circularly polarized array antenna as claimed in claim 3, wherein: the second floor comprises two copper-clad sheets, and the two copper-clad sheets are arranged at the microwave connector and the junction with the feed network.
5. The millimeter wave circularly polarized array antenna of claim 4, wherein: the two copper-clad sheets are respectively connected with the first floor through ten through holes penetrating through the second dielectric substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710872449.0A CN107732445B (en) | 2017-09-25 | 2017-09-25 | Millimeter wave circularly polarized array antenna and radiator thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710872449.0A CN107732445B (en) | 2017-09-25 | 2017-09-25 | Millimeter wave circularly polarized array antenna and radiator thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107732445A CN107732445A (en) | 2018-02-23 |
| CN107732445B true CN107732445B (en) | 2023-11-17 |
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| CN109037935B (en) * | 2018-07-24 | 2024-01-30 | 南通至晟微电子技术有限公司 | Millimeter wave low-profile broadband antenna |
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| CN109818158B (en) * | 2019-03-13 | 2020-09-11 | 东南大学 | Broadband SIW back-cavity slot antenna array adopting L-shaped slot units |
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| US10804609B1 (en) * | 2019-07-24 | 2020-10-13 | Facebook, Inc. | Circular polarization antenna array |
| KR102612857B1 (en) * | 2019-10-30 | 2023-12-12 | 엘지전자 주식회사 | Electronic device equipped with a 5G antenna |
| CN112271447B (en) * | 2020-09-14 | 2023-09-15 | 广东盛路通信科技股份有限公司 | Millimeter wave magneto-electric dipole antenna |
| CN112164899B (en) * | 2020-09-25 | 2023-03-10 | 之江实验室 | Millimeter wave circularly polarized microstrip array antenna with wide axial ratio bandwidth |
| CN114336019B (en) * | 2021-12-15 | 2022-12-16 | 华南理工大学 | 5G large-frequency-ratio beam scanning antenna with co-radiator |
| CN114336024B (en) * | 2021-12-29 | 2024-02-06 | 杭州电子科技大学 | Broadband circularly polarized planar antenna array applied to millimeter wave communication system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931476A (en) * | 2011-08-08 | 2013-02-13 | 启碁科技股份有限公司 | Double frequency circularly polarized antenna |
| CN104953256A (en) * | 2015-05-25 | 2015-09-30 | 电子科技大学 | Broadband circularly-polarized panel array antenna |
| CN106252891A (en) * | 2015-06-12 | 2016-12-21 | 香港城市大学 | Complimentary antennas and antenna system |
| CN106848599A (en) * | 2016-12-27 | 2017-06-13 | 中国电子科技集团公司第五十四研究所 | A kind of broadband circular polarization microstrip antenna array row of C-band aperture-coupled |
| CN207282711U (en) * | 2017-09-25 | 2018-04-27 | 华南理工大学 | A kind of millimeter wave circular polarised array antenna and its radiator |
-
2017
- 2017-09-25 CN CN201710872449.0A patent/CN107732445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931476A (en) * | 2011-08-08 | 2013-02-13 | 启碁科技股份有限公司 | Double frequency circularly polarized antenna |
| CN104953256A (en) * | 2015-05-25 | 2015-09-30 | 电子科技大学 | Broadband circularly-polarized panel array antenna |
| CN106252891A (en) * | 2015-06-12 | 2016-12-21 | 香港城市大学 | Complimentary antennas and antenna system |
| CN106848599A (en) * | 2016-12-27 | 2017-06-13 | 中国电子科技集团公司第五十四研究所 | A kind of broadband circular polarization microstrip antenna array row of C-band aperture-coupled |
| CN207282711U (en) * | 2017-09-25 | 2018-04-27 | 华南理工大学 | A kind of millimeter wave circular polarised array antenna and its radiator |
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