CN115207613A - Broadband dual-polarized antenna unit and antenna array - Google Patents
Broadband dual-polarized antenna unit and antenna array Download PDFInfo
- Publication number
- CN115207613A CN115207613A CN202210821526.0A CN202210821526A CN115207613A CN 115207613 A CN115207613 A CN 115207613A CN 202210821526 A CN202210821526 A CN 202210821526A CN 115207613 A CN115207613 A CN 115207613A
- Authority
- CN
- China
- Prior art keywords
- dielectric substrate
- polarized antenna
- antenna unit
- dual
- broadband dual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
-
- 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
Abstract
The invention discloses a broadband dual-polarized antenna unit and an antenna array, wherein the broadband dual-polarized antenna unit comprises a first dielectric substrate, a feed balun and a fourth dielectric substrate, an antenna radiator is arranged on the first dielectric substrate and comprises a half-wavelength dipole, a full-wavelength slot and T-shaped branches, the working bandwidth of an antenna reaches 65% by mixing the half-wavelength dipole, the full-wavelength slot and the T-shaped branches, the miniaturization of the antenna unit is realized by loading the T-shaped branches, the structure of the antenna is simple, the large-scale production is facilitated, the isolation degree in the working frequency band of the broadband dual-polarized antenna unit is higher, and a stable radiation pattern is kept in the whole working frequency band.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a broadband dual-polarized antenna unit and an antenna array.
Background
In recent years, with the increase of global mobile communication data, the demand for bandwidth of a communication system has been gradually increased. Most of the current antennas work at 1710MHz-2690MHz and can cover 2G, 3G and 4G communication frequency bands. Therefore, antennas operating in these frequency bands have become a mainstream product in the industry. Recently, the 3GPP (3 rd Generation Partnership Project) organization has defined the 5GNR band. The device is divided into an FR1 frequency band working at sub-6G and an FR2 frequency band working at millimeter waves. The FR1 frequency band is the core frequency band of 5G at present, and the n50, n51, n70 and n74 frequency bands work at 1432MHz-1517MHz, 1427MHz-1432MHz, 1695MHz-1710MHz and 1427MHz-1470MHz respectively.
However, the continuous expansion of the operating frequency band also brings many challenges to the design of the base station antenna, such as how to further improve the operating bandwidth, how to maintain stable gain and good directivity pattern in a wide frequency band, and how to achieve miniaturization.
In order to meet the coverage requirement of the 5G frequency band and simultaneously consider the 2G, 3G and 4G communication frequency bands, it is urgently needed to design a broadband dual-polarized base station antenna capable of working in 1427MHz-2690 MHz.
In view of the importance of a broadband dual-polarized base station antenna satisfying the above-described needs, many researchers have studied it based on various schemes. Documents Wu, r.li, y.qin, and y.cui, "Bandwidth-enhanced branched-polarized Antennas for 2G/3G/4G and IMT services," IEEE Antennas Wireless processing.let, vol.17, no.9, pp.1702-1706, sep.2018, "propose two antenna elements that can cover 1.4-2.75 GHz. The first antenna increases the bandwidth by introducing a parasitic strip, a parasitic ring and a parasitic disc on the basis of dual-polarized crossed dipoles. However, this solution greatly increases the complexity of the antenna structure, and the antenna has a large area and a high profile. The second version of the antenna proposed in this document covers 1.4-2.7GHz by two resonance points created by the dipoles and an additional resonance point created by the parasitic disc. But this solution is also structurally complex. The antenna proposed in the document "s.fu, z.cao, p.chen, d.gao, and x.quan," a novel band-width-enhanced dual-polarized antenna with systematic capacitive-reactive-slots, "IEEE Access, vol.7, pp.87943-87950, 2019" has a simple structure while covering 1.4-2.82GHz, but has a large antenna area and no advantage of miniaturization. The antenna proposed in the documents l.h.ye, x.y.zhang, y.gao, and q.xue, "Wideband-polarized four-polarized-antenna with stable radiation pattern for base-station applications," IEEE trans.antennas pro-pattern, vol.68, no.6, pp.4428-4436, jun.2020, achieves a broadband effect by introducing a parasitic patch and coupling on the dipole, but the same structure is complex, high in profile height, and does not have the advantage of miniaturization.
Disclosure of Invention
The present invention is directed to at least one of the technical problems of the prior art, and provides a broadband dual-polarized antenna unit.
According to a second aspect of the present invention, there is provided an antenna array including the wideband dual-polarized antenna unit as described in the first aspect.
According to the embodiment of the first aspect of the present invention, there is provided a broadband dual-polarized antenna unit, including a first dielectric substrate, a feeding balun, and a fourth dielectric substrate, where an antenna radiator is disposed on the first dielectric substrate, the antenna radiator includes a half-wavelength dipole, a full-wavelength slot, and T-shaped branches, the half-wavelength dipole includes four element portions distributed in a cross shape, an end of each element portion is configured as a diameter-reduced portion, the diameter-reduced portion is gradually reduced away from an end direction of the element portion, the full-wavelength slot includes a slot portion located in a middle of the element portion and arranged along a length direction of the element portion, an end of the slot portion is arranged in an arrow shape, and an angle bisector of an adjacent element portion is configured with the T-shaped branches, the T-shaped branch is used for generating a first resonance point, the feed balun comprises a second medium substrate and a third medium substrate, the second medium substrate and the third medium substrate are arranged in an orthogonal mode, the top ends of the second medium substrate and the third medium substrate are abutted to the first medium substrate and connected with the antenna radiator, a fourth medium substrate is arranged at the bottom ends of the second medium substrate and the third medium substrate, a first floor is arranged at the upper end of the fourth medium substrate, the first floor is connected with the second medium substrate and the third medium substrate and grounded, a first coaxial line and a second coaxial line are further arranged on the fourth medium substrate, the first coaxial line is connected with the second medium substrate, and the second coaxial line is connected with the third medium substrate.
Has the advantages that: the broadband dual-polarized antenna unit comprises a first dielectric substrate, a feed balun and a fourth dielectric substrate, wherein an antenna radiating body is configured on the first dielectric substrate and comprises a half-wavelength dipole, a full-wavelength gap and T-shaped branches, the working bandwidth of the antenna reaches 65% by mixing the half-wavelength dipole, the full-wavelength gap and the T-shaped branches, the miniaturization of the antenna unit is realized by loading the T-shaped branches, the antenna unit is simple in structure and convenient for large-scale production, the isolation degree in the working frequency band of the broadband dual-polarized antenna unit is higher, and a stable radiation pattern is kept in the whole working frequency band.
According to the broadband dual-polarized antenna unit in the embodiment of the first aspect of the present invention, the second dielectric substrate includes a first surface and a second surface, the first surface is printed with a first metal floor, the second surface is printed with a first feeding microstrip line, the upper end of the first metal floor is connected to the oscillator portion of the antenna radiator for feeding, the lower end of the first metal floor is connected to the first floor and grounded, and the first feeding microstrip line is connected to the first coaxial inner conductor.
According to the broadband dual-polarized antenna unit in the embodiment of the first aspect of the present invention, two first through holes are disposed on the first dielectric substrate and arranged along the bisector of the angle between adjacent two adjacent oscillator portions, and the upper end of the first metal floor is connected to the oscillator portions through the two first through holes for feeding.
According to the broadband dual-polarized antenna unit in the embodiment of the first aspect of the present invention, the third dielectric substrate includes an upper surface and a lower surface, the upper surface is printed with a second metal floor, the lower surface is printed with a second feeding microstrip line, the upper end of the second metal floor is connected to the oscillator portion of the antenna radiator for feeding, the lower end of the second metal floor is connected to the first floor and grounded, and the second feeding microstrip line is connected to the inner conductor of the second coaxial line.
According to the broadband dual-polarized antenna unit in the embodiment of the first aspect of the present invention, two second through holes are disposed on the first dielectric substrate and are disposed along the bisector of the adjacent oscillator parts, and the upper end of the second metal floor is connected to the oscillator parts through the two second through holes for feeding.
According to the broadband dual-polarized antenna unit in the embodiment of the first aspect of the present invention, two ground pads are disposed on the lower surface of the fourth dielectric substrate, the ground pads are connected to the first ground board through metallized via holes, a non-metallized through hole is disposed in the center of the ground pads, and the first coaxial line and the second coaxial line are connected to the second dielectric substrate and the third dielectric substrate through the non-metallized through hole.
An antenna array, comprising: the broadband dual-polarized antenna unit according to the embodiment of the first aspect, the number of the broadband dual-polarized antenna units is two or more, and the broadband dual-polarized antenna units are arranged in an array manner.
Has the beneficial effects that: compared with the prior art, the antenna array has a simpler structure and a smaller volume, and keeps higher isolation and stable radiation mode in the whole working frequency band by adopting the broadband dual-polarized antenna unit.
According to the antenna array in the embodiment of the second aspect of the present invention, a fifth dielectric substrate is disposed on a peripheral side of each broadband dual-polarized antenna unit, and the fifth dielectric substrate forms a metal wall with a closed periphery.
According to the antenna array in the embodiment of the second aspect of the present invention, the fifth dielectric substrate includes a main board, a connecting portion disposed at the bottom of the main board, and a notch disposed in the middle of the top end of the main board, and the connecting portion is connected to the fourth dielectric substrate.
According to the antenna array of the embodiment of the second aspect of the present invention, the number of the broadband dual-polarized antenna units is even, the broadband dual-polarized antenna units are arranged in a staggered manner to form a plurality of rows, the odd-numbered rows of the broadband dual-polarized antenna units are located between every two of the even-numbered rows of the broadband dual-polarized antenna units, or the even-numbered rows of the broadband dual-polarized antenna units are located between every two of the odd-numbered rows of the broadband dual-polarized antenna units.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
fig. 1 is an exploded schematic view of a broadband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 2 is a top view of an antenna radiator on an upper surface of a first dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 3 is a side view of a first feeding microstrip line on a second dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 4 is a side view of a first metal floor on a second dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 5 is a side view of a second feeding microstrip line on a third dielectric substrate of the wideband dual-polarized antenna unit according to the embodiment of the present invention;
fig. 6 is a side view of a second metal ground plane on a third dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 7 is a top view of an upper surface of a fourth dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 8 is a top view of a lower surface of a fourth dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 9 is a front view of a fifth dielectric substrate of a wideband dual-polarized antenna unit according to an embodiment of the present invention;
fig. 10 is a side view of an antenna array provided by an embodiment of the present invention;
fig. 11 is a schematic diagram of changes of S parameters of two ports of a broadband dual-polarized antenna unit with frequency according to an embodiment of the present invention;
fig. 12 is a schematic diagram of the maximum achievable gain of the dual ports of the broadband dual-polarized antenna unit according to the embodiment of the present invention, which varies with frequency;
fig. 13 is a two-dimensional radiation pattern at 1.5GHz when the port 1 of the broadband dual-polarized antenna unit provided by the embodiment of the present invention is excited;
fig. 14 is a two-dimensional radiation pattern at 2GHz when the port 1 of the broadband dual-polarized antenna unit provided by the embodiment of the present invention is excited;
fig. 15 is a two-dimensional radiation pattern at 2.6GHz when the port 1 of the broadband dual-polarized antenna unit provided by the embodiment of the present invention is excited;
fig. 16 is a two-dimensional radiation pattern of the x-z plane when the antenna array with broadband dual polarization provided by the embodiment of the present invention is polarized at + 45 °.
A first dielectric substrate 100; a half-wavelength dipole 110, a vibrator part 111, a diameter reducing part 112, a first through hole 113, a second through hole 114, a full-wavelength slit 120, and a T-shaped branch 130;
a feed balun 200; a second dielectric substrate 210, a first surface 211, a second surface 212, a first metal floor 213, a first feed microstrip line 214, a third dielectric substrate 220, an upper surface 221, a lower surface 222, a second metal floor 223, and a second feed microstrip line 224;
a fourth dielectric substrate 300; a first floor 310, a first coaxial line 320, a second coaxial line 330, a ground pad 340;
a fifth dielectric substrate 400.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the essential numbers, and greater than, less than, etc. are understood as including the essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood 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 otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, a broadband dual-polarized antenna unit 10 includes: first dielectric substrate 100, feeding balun 200 and fourth dielectric substrate 300.
As shown in fig. 1 and fig. 2, the first dielectric substrate 100 is configured with antenna radiators, and the antenna radiators are ± 45 ° dual-polarized antenna radiators disposed on the first dielectric substrate 100. The antenna radiator includes a half-wavelength dipole 110, a full-wavelength slot 120, and a T-branch 130. Specifically, the half-wavelength dipole 110 includes four vibrator parts 111 arranged in a cross shape, and the distal ends of the vibrator parts 111 are arranged as diameter-reduced parts 112, and the diameter-reduced parts 112 are gradually reduced in a direction away from the distal ends of the vibrator parts 111. The full-wavelength slot 120 includes a slot portion 121 located in the middle of the element portion 111 and arranged along the length direction of the element portion 111, an end portion of the slot portion 121 is arranged in an arrow shape, a T-shaped branch 130 is arranged on an angle bisector of the adjacent element portions 111, and the T-shaped branch 130 is used for generating a first resonance point.
Referring to fig. 1 and 2, the first dielectric substrate 100 is provided with crossed half-wavelength dipoles 110 arranged in a cross shape, and the ends of the vibrator part 111 are configured such that the ends are narrowed and tapered to form an isosceles right triangle, that is, a diameter-reduced part 112. Of course, the reduced diameter portion may not have any other triangular or tapered shape. A cross-shaped full wavelength slot 120 is etched into the middle of the half-wavelength dipole 110, and the ends of the full wavelength slot 120 are arranged in the shape of arrows to increase the slot length and decrease the size, so that the full wavelength slot 120 mode operates at 2.65GHz.
The broadband dual-polarized antenna unit 10 enables the antenna to work at 1.41GHz-2.76GHz by mixing a dipole mode generated by the half-wavelength dipoles 110, a full-wavelength slot mode generated by the full-wavelength slots 120 and a T-shaped branch mode generated by the T-shaped branches.
The feeding balun 200 includes a second dielectric substrate 210 and a third dielectric substrate 220. The second dielectric substrate 210 and the third dielectric substrate 220 are disposed perpendicular to each other, and the top ends of the second dielectric substrate 210 and the third dielectric substrate 220 are in contact with the first dielectric substrate 100 and are connected to the antenna radiator.
The fourth dielectric substrate 300 is used as a reflective plate, the fourth dielectric substrate 300 is disposed at the bottom ends of the second dielectric substrate 210 and the third dielectric substrate 220, a first floor 310 is disposed at the upper end of the fourth dielectric substrate 300, and the first floor 310 is connected to the second dielectric substrate 210 and the third dielectric substrate 220 and grounded. The first floor 310 is a metal plate. The fourth dielectric substrate 300 is further provided with a first coaxial line 320 and a second coaxial line 330, the first coaxial line 320 is connected with the second dielectric substrate 210, and the second coaxial line 330 is connected with the third dielectric substrate 220.
Referring to fig. 3 and 4, in some of the embodiments, the second dielectric substrate 210 includes a first face 211 and a second face 212, the first face 211 is printed with a first metal floor 213, and the second face 212 is printed with a first feed microstrip line 214. The upper end of the first metal floor 213 is connected to the antenna radiator element 111 for feeding, the lower end of the first metal floor 213 is connected to the ground of the first floor 310, and the first feeding microstrip line 214 is connected to the inner conductor of the first coaxial line 320, so as to achieve 45 ° polarized radiation.
Specifically, the first dielectric substrate 100 is provided with two first through holes 113 disposed along the bisector of the corner of the adjacent element portion 111, and the upper end of the first metal floor 213 is connected to the element portion 111 through the two first through holes 113 for feeding power. It is easily understood that the first metal floor 213 is provided at the upper end thereof with two latches capable of passing through the first through hole 113 to enable the first metal floor 213 to be connected to the vibrator part 111 for feeding power, and also to enable the first metal floor 213 to be fixed.
Referring to fig. 5 and 6, the third dielectric substrate 220 includes an upper surface 221 and a lower surface 222, the upper surface 221 is printed with a second metal ground plate 223, the lower surface 222 is printed with a second feed microstrip line 224, the upper end of the second metal ground plate 223 is connected to the oscillator portion 111 of the antenna radiator for feeding, the lower end of the second metal ground plate 223 is connected to the first ground plate 310 for grounding, and the second feed microstrip line 224 is connected to the inner conductor of the second coaxial line 330, so that-45 ° polarized radiation is realized.
Specifically, two second through holes 114 arranged along the angle bisector of the adjacent element parts are arranged on the first dielectric substrate 100, and the upper end of the second metal floor 223 is connected with the element part 111 through the two second through holes 114 for feeding. Further, two clamping blocks are arranged at the upper end of the second metal floor 223, and the clamping blocks can penetrate through the second through hole 114, so that the second metal floor 223 can be connected with the vibrator part 111 for feeding, and the second metal floor 223 can be fixed.
Referring to fig. 7 and 8, in some embodiments, a first ground plane 310 is printed on an upper surface of a fourth dielectric substrate 300, two ground pads 340 are printed on a lower surface of the fourth dielectric substrate 300, the ground pads 340 are connected to the first ground plane 310 through eight metalized vias and are grounded, non-metalized through holes are respectively formed from centers of the two ground pads 340 to an upper side, and an inner conductor of the first coaxial line 320 and an inner conductor of the second coaxial line 330 are respectively connected to the first feed microstrip line 214 of the second dielectric substrate 210 and the second feed microstrip line 224 of the third dielectric substrate 220 through the non-metalized through holes. Two ground pads 340 are connected to the outer conductor of the first coaxial line 320 and the outer conductor of the second coaxial line 330, respectively, and grounded.
Referring to fig. 9, of course, fifth dielectric substrates 400 may be disposed on the periphery of the wideband dual-polarized antenna unit 10, top notches are printed on the fifth dielectric substrates 400, the fifth dielectric substrates 400 surround to form a metal wall, and the four same fifth dielectric substrates 400 surround the wideband dual-polarized antenna unit 10, so as to widen the beam width of the wideband dual-polarized antenna unit 10 at low frequency, thereby enhancing the beam scanning effect of the array.
Referring to fig. 10, an antenna array includes: according to the broadband dual-polarized antenna unit 10 described in the embodiment of the first aspect, the number of the broadband dual-polarized antenna unit 10 is more than two, and the broadband dual-polarized antenna units 10 are arranged in an array manner.
Wherein, the periphery of each broadband dual-polarized antenna unit 10 is provided with a fifth dielectric substrate 400, and the fifth dielectric substrate 400 forms a metal wall with a closed periphery. The fifth dielectric substrate 400 includes a main board, a connecting portion disposed at the bottom of the main board, and a notch disposed in the middle of the top end of the main board, and the connecting portion is connected to the fourth dielectric substrate 300. The fifth dielectric substrate 400 surrounds the outer circumference of the wideband dual-polarized antenna unit 10, and surrounds the antenna unit, so that the beam width of the antenna unit at low frequency can be widened, and the beam scanning effect of the array is enhanced.
The fifth dielectric substrate 400 may be enclosed to form a square groove, or enclosed to form a cylinder, etc., and the shape of the metal wall is not limited herein.
The number of the broadband dual-polarized antenna units 10 is even, the broadband dual-polarized antenna units 10 are arranged in a staggered manner to form a plurality of rows, the broadband dual-polarized antenna units 10 in odd rows are located between every two broadband dual-polarized antenna units 10 in even rows, or the broadband dual-polarized antenna units 10 in even rows are located between every two broadband dual-polarized antenna units 10 in odd rows.
In some embodiments, the wideband dual-polarized antenna element 10 and four fifth dielectric substrates 400, which are centrosymmetrically surrounding the wideband dual-polarized antenna element 10, form a sub-element of an array, a first row of the array is provided with three sub-elements, the distance between each sub-element is opposite, a second row of the array is completely consistent with the first row of the array, and each sub-element of the second row is arranged between every two sub-elements of the first row, which is equivalent to reducing the distance between the antennas by half, thereby increasing the beam scanning range of the array.
Fig. 11 is a schematic diagram of dual-port simulation S parameters of two different polarizations of the broadband dual-polarized antenna unit provided in this embodiment. Referring to fig. 11, it can be seen that the reflection coefficients of the two ports have good uniformity due to the symmetrical structure, and the reflection coefficient is lower than-10 dB in the frequency band of about 1.41GHz-2.76GHz, and the port isolation is higher than 27.8dB in the whole working frequency band.
Fig. 12 is a simulation schematic diagram of the maximum achievable gain of the broadband dual-polarized antenna unit provided in this embodiment as a function of frequency. Referring to fig. 12, it can be seen that the gains of both ports are greater than 6.4dBi in the operating band.
Fig. 13, 14 and 15 respectively show two-dimensional radiation patterns of the broadband dual-polarized antenna unit provided by the present embodiment at 1.5GHz, 2GHz and 2.6GHz when the antenna unit is excited through the port 1. Referring to fig. 13, 14 and 15, because of the symmetrical similarity between port 1 and port 2, only the two-dimensional radiation pattern of port 1 is shown here for simplicity. As shown in the figure, the broadband dual-polarized antenna unit has a stable side radiation mode, and a directional pattern in an operating frequency band is regular and stable. At 1.5GHz-2GHz, the cross-polarization level is less than-16.5 dB, and at 2.6GHz, the cross-polarization level is less than-12.4 dB.
Fig. 16 is a two-dimensional simulation pattern of the x-z plane when the antenna array provided by the present embodiment is polarized at + 45 °, and the phase difference of each port of the six elements is 90 °. As shown in the figure, it can be seen that at 1.5GHz, the main beam scan angle is-43 °, the 3dB beamwidth is 38.2 °, at 2GHz, the main beam scan angle is-50 °, the 3dB beamwidth is 40.8 °, at 2.6GHz, the main beam scan angle is-49 °, and the 3dB beamwidth is 31.4 °. The 3dB beam scan angle of the antenna array may cover ± 60 ° over the entire operating frequency band. Therefore, the present embodiment provides a dual-polarized wideband antenna unit operating at 1.41-2.76GHz and a six-element phased array capable of covering ± 60 ° in a 3dB beam scanning range, and the implemented dual-polarized wideband antenna unit has the advantages of simple structure and miniaturization, and maintains higher isolation and more stable radiation pattern and gain in an operating frequency band.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A wideband dual polarized antenna element, comprising:
the antenna comprises a first dielectric substrate, wherein an antenna radiator is arranged on the first dielectric substrate, the antenna radiator comprises a half-wavelength dipole, a full-wavelength gap and T-shaped branches, the half-wavelength dipole comprises four vibrator parts distributed in a cross shape, the tail end of each vibrator part is configured to be a diameter reducing part, the diameter reducing part is gradually reduced in the direction far away from the tail end of each vibrator part, each full-wavelength gap comprises a gap part which is positioned in the middle of each vibrator part and arranged along the length direction of each vibrator part, the end part of each gap part is arranged to be in an arrow shape, the T-shaped branches are arranged on angle bisectors of the adjacent vibrator parts, and the T-shaped branches are used for generating a first resonance point;
the feed balun comprises a second dielectric substrate and a third dielectric substrate, the second dielectric substrate and the third dielectric substrate are arranged in an orthogonal mode, and the top ends of the second dielectric substrate and the third dielectric substrate are abutted to the first dielectric substrate and connected with the antenna radiating body;
the fourth dielectric substrate is arranged at the bottom ends of the second dielectric substrate and the third dielectric substrate, a first floor is arranged at the upper end of the fourth dielectric substrate, the first floor is connected with the second dielectric substrate and the third dielectric substrate and grounded, a first coaxial line and a second coaxial line are further arranged on the fourth dielectric substrate, the first coaxial line is connected with the second dielectric substrate, and the second coaxial line is connected with the third dielectric substrate.
2. A wideband dual polarized antenna unit according to claim 1, characterized in that: the second dielectric substrate comprises a first surface and a second surface, the first surface is printed with a first metal floor, the second surface is printed with a first feed microstrip line, the upper end of the first metal floor is connected with the oscillator part of the antenna radiator for feeding, the lower end of the first metal floor is connected with the first floor and grounded, and the first feed microstrip line is connected with the inner conductor of the first coaxial line.
3. A wideband dual polarized antenna unit according to claim 2, characterized in that: the first medium substrate is provided with two first through holes arranged along the angle bisector of the adjacent oscillator parts, and the upper end of the first metal floor is connected with the oscillator parts through the two first through holes for feeding.
4. A wideband dual polarized antenna unit according to any one of claims 1 to 3, wherein: the third dielectric substrate comprises an upper surface and a lower surface, a second metal floor is printed on the upper surface, a second feed microstrip line is printed on the lower surface, the upper end of the second metal floor is connected with the oscillator part of the antenna radiator for feeding, the lower end of the second metal floor is connected with the first floor and grounded, and the second feed microstrip line is connected with the inner conductor of the second coaxial line.
5. A wideband dual polarized antenna unit according to claim 4, characterized in that: the first dielectric substrate is provided with two second through holes arranged along the angle bisector of the adjacent oscillator parts, and the upper end of the second metal floor is connected with the oscillator parts through the two second through holes for feeding.
6. A wideband dual polarized antenna element according to claim 1, characterized in that: the lower surface of the fourth dielectric substrate is provided with two grounding pads, the grounding pads are connected with the first floor through metalized through holes, a non-metalized through hole is formed in the center of each grounding pad, and the first coaxial line and the second coaxial line are connected with the second dielectric substrate and the third dielectric substrate through the non-metalized through hole.
7. An antenna array, comprising:
the broadband dual-polarized antenna unit according to any one of claims 1 to 6, wherein the number of the broadband dual-polarized antenna unit is two or more, and the broadband dual-polarized antenna unit is arranged in an array.
8. An antenna array according to claim 7, wherein: and a fifth dielectric substrate is arranged on the periphery of each broadband dual-polarized antenna unit, and the fifth dielectric substrate forms a metal wall with closed periphery.
9. An antenna array according to claim 8, wherein: the fifth dielectric substrate comprises a mainboard, a connecting part arranged at the bottom of the mainboard and a notch arranged in the middle of the top end of the mainboard, and the connecting part is connected with the fourth dielectric substrate.
10. An antenna array according to claim 7, wherein: the number of the broadband dual-polarized antenna units is even, the broadband dual-polarized antenna units are arranged in a staggered mode to form a plurality of rows, the broadband dual-polarized antenna units in odd rows are located between every two broadband dual-polarized antenna units in even rows, or the broadband dual-polarized antenna units in even rows are located between every two broadband dual-polarized antenna units in odd rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210821526.0A CN115207613B (en) | 2022-07-13 | 2022-07-13 | Broadband dual-polarized antenna unit and antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210821526.0A CN115207613B (en) | 2022-07-13 | 2022-07-13 | Broadband dual-polarized antenna unit and antenna array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115207613A true CN115207613A (en) | 2022-10-18 |
| CN115207613B CN115207613B (en) | 2023-05-23 |
Family
ID=83579457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210821526.0A Active CN115207613B (en) | 2022-07-13 | 2022-07-13 | Broadband dual-polarized antenna unit and antenna array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115207613B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116093590A (en) * | 2023-03-16 | 2023-05-09 | 广东工业大学 | Dual-broadband dual-polarized antenna |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291905A1 (en) * | 2009-01-12 | 2011-12-01 | Comba Telecom System (China) Ltd. | Dual-polarized radiation element and planar oscillator thereof |
| CN204011714U (en) * | 2014-08-25 | 2014-12-10 | 罗森伯格技术（昆山）有限公司 | Dual polarization vibrator |
| JP5872018B1 (en) * | 2014-12-19 | 2016-03-01 | 電気興業株式会社 | Dual-polarized antenna device |
| US20190081413A1 (en) * | 2017-09-08 | 2019-03-14 | Pc-Tel, Inc. | BROADBAND LOW-PROFILE DUAL-LINEARLY POLARIZED ANTENNA FOR A OneLTE TWO-IN-ONE PLATFORM |
| CN110429374A (en) * | 2019-07-29 | 2019-11-08 | 华南理工大学 | Wideband dual polarized filtering base station antenna unit, base-station antenna array and communication equipment |
| CN111710973A (en) * | 2020-07-08 | 2020-09-25 | 哈尔滨众达电子有限公司 | Stacked differential broadband base station antenna |
| CN112736433A (en) * | 2020-12-31 | 2021-04-30 | 南京中新赛克科技有限责任公司 | Dual-frequency dual-polarized dipole antenna unit for 5G |
| CN113131193A (en) * | 2019-12-30 | 2021-07-16 | 华为技术有限公司 | Dual-polarized antenna, router and base station |
| CN113964522A (en) * | 2021-09-27 | 2022-01-21 | 华南理工大学 | Miniaturized differential feed dual-polarized C-band patch antenna |
-
2022
- 2022-07-13 CN CN202210821526.0A patent/CN115207613B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291905A1 (en) * | 2009-01-12 | 2011-12-01 | Comba Telecom System (China) Ltd. | Dual-polarized radiation element and planar oscillator thereof |
| CN204011714U (en) * | 2014-08-25 | 2014-12-10 | 罗森伯格技术（昆山）有限公司 | Dual polarization vibrator |
| JP5872018B1 (en) * | 2014-12-19 | 2016-03-01 | 電気興業株式会社 | Dual-polarized antenna device |
| US20190081413A1 (en) * | 2017-09-08 | 2019-03-14 | Pc-Tel, Inc. | BROADBAND LOW-PROFILE DUAL-LINEARLY POLARIZED ANTENNA FOR A OneLTE TWO-IN-ONE PLATFORM |
| CN110429374A (en) * | 2019-07-29 | 2019-11-08 | 华南理工大学 | Wideband dual polarized filtering base station antenna unit, base-station antenna array and communication equipment |
| CN113131193A (en) * | 2019-12-30 | 2021-07-16 | 华为技术有限公司 | Dual-polarized antenna, router and base station |
| CN111710973A (en) * | 2020-07-08 | 2020-09-25 | 哈尔滨众达电子有限公司 | Stacked differential broadband base station antenna |
| CN112736433A (en) * | 2020-12-31 | 2021-04-30 | 南京中新赛克科技有限责任公司 | Dual-frequency dual-polarized dipole antenna unit for 5G |
| CN113964522A (en) * | 2021-09-27 | 2022-01-21 | 华南理工大学 | Miniaturized differential feed dual-polarized C-band patch antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116093590A (en) * | 2023-03-16 | 2023-05-09 | 广东工业大学 | Dual-broadband dual-polarized antenna |
| CN116093590B (en) * | 2023-03-16 | 2023-06-02 | 广东工业大学 | Dual-broadband dual-polarized antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115207613B (en) | 2023-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100542829B1 (en) | High Gain and Wideband Microstrip Patch Antenna for Transmitting/Receiving and Array Antenna Arraying it | |
| US11329387B2 (en) | Single and dual polarized dual-resonant cavity backed slot antenna (D-CBSA) elements | |
| KR101687504B1 (en) | Dual polarization current loop radiator with integrated balun | |
| US11581660B2 (en) | High performance folded dipole for multiband antennas | |
| CN115732925A (en) | Dual-polarized antenna array with millimeter wave dual-frequency respective feeding | |
| CN116581531A (en) | Wide-beam dual-polarized dielectric resonator antenna | |
| CN114122682A (en) | Antenna unit, antenna array and electronic equipment | |
| WO2023064051A1 (en) | Multi-directional dual-polarized antenna system | |
| WO2023092469A1 (en) | Antenna device | |
| CN115207613B (en) | Broadband dual-polarized antenna unit and antenna array | |
| CN112886234B (en) | Microwave millimeter wave coplanar common-caliber antenna based on embedded structure | |
| CN114267940A (en) | Millimeter wave end-fire broadband circular polarization double-ring array based on substrate integrated waveguide | |
| CN113690584A (en) | Millimeter wave wide-angle scanning phased-array antenna based on substrate integrated ridge waveguide | |
| KR102275167B1 (en) | Wideband patch antenna device for millimeter wave | |
| CN210926312U (en) | Broadband radiation unit and antenna | |
| CN110380199B (en) | Common-caliber dual-band array antenna based on micro-strip grids and patches | |
| CN115911890A (en) | Dual-frequency dual-polarization magnetoelectric dipole antenna array for millimeter wave mobile phone terminal | |
| CN115939782A (en) | W-band rotary type circularly polarized magnetoelectric dipole antenna array | |
| CN115810917A (en) | Satellite-borne Ka-band circularly polarized antenna unit, antenna array and phased array | |
| KR20190087270A (en) | Antenna device and electronic apparatus having the same | |
| CN115173068A (en) | Broadband circularly polarized substrate integrated waveguide horn antenna array and wireless communication equipment | |
| CN115000727A (en) | Broadband wide-angle scanning array antenna unit | |
| CN114784495A (en) | Millimeter wave wide bandwidth wave beam patch antenna | |
| CN114243297A (en) | Compact dual-frequency dual-polarized antenna array applied to millimeter wave beam scanning | |
| KR100449836B1 (en) | Wideband Microstrip Patch Antenna for Transmitting/Receiving and Array Antenna Arraying it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |