CN112038758A - Ultra-wideband dual-polarized radiation unit, antenna and antenna array - Google Patents
Ultra-wideband dual-polarized radiation unit, antenna and antenna array Download PDFInfo
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- CN112038758A CN112038758A CN202011010071.1A CN202011010071A CN112038758A CN 112038758 A CN112038758 A CN 112038758A CN 202011010071 A CN202011010071 A CN 202011010071A CN 112038758 A CN112038758 A CN 112038758A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- 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
- H01Q5/10—Resonant antennas
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- 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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- 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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Abstract
The application relates to the technical field of communication antennas, and provides an ultra-wideband dual-polarized radiation unit, an antenna and an antenna array. The utility model provides an ultra wide band dual polarization radiating element includes: the radiating vibrator plate, the low-frequency parasitic radiating plate and the high-frequency parasitic radiating plate are arranged in parallel; the radiation oscillator plate is positioned between the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate; the radiating element plate includes: the feed circuit comprises a dielectric plate, two dipoles with mutually orthogonal polarization directions and a feed circuit; the dipole is arranged on one side surface of the dielectric plate, and the feed circuit is arranged on the other side surface of the dielectric plate and is electrically connected with the dipole; the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are respectively provided with metal circuits for inducing low-frequency electromagnetic waves and high-frequency electromagnetic waves. The scheme provided by the application can realize the radiation function of the ultra-wideband according to a simple structure.
Description
Technical Field
The application relates to the technical field of communication antennas, in particular to an ultra-wideband dual-polarized radiation unit, an ultra-wideband dual-polarized antenna and an ultra-wideband dual-polarized antenna array.
Background
The 5G (fifth generation mobile communication) network has the characteristics of ultra-high speed, ultra-low delay, large capacity and the like, and relies on that a 5G base station end adopts a super-large scale antenna array (english name: Massive MIMO) which is not separable. The adoption of large-scale antenna array systems requires that the radiating elements must be miniaturized, broadband and simplified. There is a need for a novel antenna radiating element with simple structure, low cost and wide bandwidth and a large-scale antenna array composed of the novel antenna radiating element.
At present, antenna radiation units generally applied to 5G Massive MIMO mainly have a microstrip patch form and a symmetrical half-wave oscillator form. The narrow frequency band is just the main disadvantage of the microstrip patch antenna, theoretically, the relative bandwidth of the microstrip antenna is 1%, and the bandwidth of the microstrip patch antenna can reach 10% through the efforts of designers. If the half-wave oscillator scheme is designed into a broadband, the oscillator design is very complex, the size is very large, and both the two schemes can only meet a certain frequency band of 5G. Therefore, the current antenna array design cannot simultaneously meet the requirements of simple structure and ultra-wide radiation frequency band of the working frequency band.
Disclosure of Invention
The ultra-wideband dual-polarized radiation unit, the ultra-wideband dual-polarized antenna and the ultra-wideband dual-polarized antenna array are provided aiming at the technical problem that the design scheme of the antenna radiation unit cannot meet the requirements of simple structure and ultra-wideband radiation frequency band of a working frequency band at the same time.
In a first aspect, an ultra-wideband dual-polarized radiating element provided by the present application includes:
the radiating vibrator plate, the low-frequency parasitic radiating plate and the high-frequency parasitic radiating plate are arranged in parallel; the radiation oscillator plate is positioned between the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate;
the radiating element plate includes: the feed circuit comprises a dielectric plate, two dipoles with mutually orthogonal polarization directions and a feed circuit; the dipole is arranged on one side surface of the dielectric plate, and the feed circuit is arranged on the other side surface of the dielectric plate and is electrically connected with the dipole;
the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are respectively provided with metal circuits for inducing low-frequency electromagnetic waves and high-frequency electromagnetic waves; the metal circuit is used for obtaining corresponding induced current according to the coupling of the electromagnetic wave of the corresponding frequency band, and the induced current generates the electromagnetic wave of the corresponding frequency band to radiate to the space.
In an optional embodiment of the first aspect, the ultra-wideband dual-polarized radiation unit further includes: a feed balun;
the feed balun is used for supporting the radiating oscillator plate and feeding power to the radiating oscillator plate.
In an optional embodiment of the first aspect, each of the dipoles comprises a first radiating dipole arm and a second radiating dipole arm arranged oppositely;
the feed balun comprises two groups of balun structures, each group of balun structure comprises a coaxial cable and a metal column, and the coaxial cable and the metal column are respectively connected with the first radiation oscillator arm and the second radiation oscillator arm.
In an optional embodiment of the first aspect, the feeder line comprises two orthogonally arranged feeder sub-lines, each feeder sub-line corresponding to each group of the balun structures;
each of the feed sub-lines includes a first end and a second end;
the first end part is overlapped with the first radiation dipole arm, and the corresponding overlapped area is close to the central position of the corresponding dipole; the second end part is overlapped with the second radiation oscillator arm, and the corresponding overlapped area is the area on two sides of the central line of the second radiation oscillator arm penetrating through the first radiation oscillator arm and the second radiation oscillator arm.
In an alternative embodiment of the first aspect, the first and second radiating dipole arms each have a circular aperture therein, the circular apertures being sized according to a selected operating frequency.
In an optional embodiment of the first aspect, a metal via is opened in a region where the first radiating dipole arm overlaps the first end portion;
an outer conductor of the coaxial cable is soldered to a region of the first radiating element arm overlapping the first end portion;
the inner conductor of the coaxial cable penetrates through the metal through hole and is welded on the first end part through the metal through hole.
In an alternative embodiment of the first aspect, the two orthogonally arranged feeder sub-circuits are a first feeder sub-circuit and a second feeder sub-circuit, respectively;
the first feed sub-line is arranged on one surface of the dielectric plate, two avoidance metal holes are arranged at the intersection of the second feed sub-line and the first feed sub-line, the two avoidance metal holes penetrate through the dielectric plate, and the second feed sub-line penetrates through and transmits along the two avoidance metal holes.
In an optional embodiment of the first aspect, the ultra-wideband dual-polarized radiation unit further includes: the fixing block is arranged below the low-frequency parasitic radiation plate;
the fixing block fixes the coaxial cable and the metal column.
In an optional embodiment of the first aspect, the metal line of the low-frequency parasitic radiating plate is a first metal line, and the first metal line is a closed loop;
a range of a circumference of the first metal line: the operating frequency band of the dual-polarized radiation unit is 1/4 integral multiple of the wavelength of the low-frequency band electromagnetic wave.
In an optional embodiment of the first aspect, the metal lines of the high-frequency parasitic radiating plate are second metal lines, and the second metal lines are four circular metal lines;
each circular metal circuit is over against the circular hole of the corresponding radiation oscillator arm, and the range of the circumference of the circular metal circuit is in integral multiple of 1/4 high-frequency band electromagnetic wave wavelength of the working frequency band of the dual-polarized radiation unit.
In an alternative embodiment of the first aspect, the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are fixedly connected to the radiating oscillator plate through plastic columns located at four corner regions of each of the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate.
In a second aspect, the present application provides an ultra-wideband dual-polarized antenna, which includes:
an ultra-wideband dual-polarized radiation unit as described in any of the above embodiments, and a reflection plate on which the ultra-wideband dual-polarized radiation unit is mounted; and the edge of the reflecting plate is provided with a partition plate.
In a third aspect, an ultra-wideband dual-polarized antenna array provided in the present application includes:
a plurality of ultra-wideband dual-polarized radiation units as described in any of the above embodiments, and a reflection plate on which the ultra-wideband dual-polarized radiation units are mounted;
the edge of the reflecting plate is provided with a partition plate, and a partition plate is arranged between every two ultra-wideband dual-polarized radiation units.
The application provides a pair of ultra wide band dual polarization radiating element, ultra wide band dual polarization antenna and ultra wide band dual polarization antenna array, its beneficial effect is:
the ultra-wideband dual-polarized radiation unit, the ultra-wideband dual-polarized antenna and the ultra-wideband dual-polarized antenna array can use the radiation oscillator plate, the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate which are arranged in parallel as radiation main bodies, radiate low-frequency electromagnetic waves and high-frequency electromagnetic waves to a space through resonance excitation according to radio-frequency signals, can realize the radiation function of ultra-wideband with a simple structure, and greatly expand the working bandwidth of the radiation unit.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice.
Drawings
The foregoing and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic perspective view of an ultra-wideband dual-polarized radiation unit according to an embodiment of the present application;
FIG. 2 is a schematic view of a radiating dipole plate provided by an embodiment of the present application;
fig. 3 is a schematic diagram of a feed line on the upper side of a radiating dipole plate provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of a positional relationship between a metal vent and a radiating vibrator arm according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a low frequency parasitic radiating plate provided by an embodiment of the present application;
fig. 6 is a schematic diagram of a high-frequency parasitic radiation plate provided by an embodiment of the present application;
fig. 7 is an isolation test chart of an ultra-wideband dual-polarized radiation antenna provided by an embodiment of the present application;
fig. 8 is a standing wave ratio test chart of an ultra-wideband dual-polarized radiation antenna provided by an embodiment of the present application;
fig. 9 is a test chart of the radiation pattern of an ultra-wideband dual-polarized radiation antenna provided by an embodiment of the present application;
fig. 10 is a schematic perspective view of an ultra-wideband dual-polarized antenna provided by an embodiment of the present application;
fig. 11 is a schematic perspective view of an array of ultra-wideband dual-polarized antennas according to an embodiment of the present application.
Detailed Description
The present application is further described with reference to the following drawings and exemplary embodiments, wherein like reference numerals are used to refer to like elements throughout. In addition, if a detailed description of the known art is not necessary to show the features of the present application, it is omitted.
Referring to fig. 1 and 2, fig. 1 is a schematic perspective view of an ultra-wideband dual-polarized radiation unit provided in an embodiment of the present application; fig. 2 is a schematic view of a radiating dipole plate according to an embodiment of the present application.
The ultra-wideband dual-polarized radiation unit 10 provided in the embodiment of the present application includes a radiation oscillator plate 100, a low-frequency parasitic radiation plate 200, and a high-frequency parasitic radiation plate 300, which are parallel to each other. Wherein the radiating dipole plate 100 is located between the low-frequency parasitic radiating plate 200 and the high-frequency parasitic radiating plate 300. In this embodiment, the low-frequency parasitic radiation plate 200 and the high-frequency parasitic radiation plate 300 can be fixedly connected to the radiating oscillator plate 100 by mounting plastic posts 500 through mounting holes at four corners of each of the two plates. The distance between the low-frequency parasitic radiation plate 200 and the radiation oscillator plate 100 and the distance between the high-frequency parasitic radiation plate 300 and the radiation oscillator plate 100 can be respectively adjusted according to the radiation parameter requirements.
The radiating oscillator plate 100 has a dielectric plate 101 as a substrate, and in this embodiment, the dielectric plate 101 is a PCB. A dipole 120 and a feeder line 110 are provided on both side surfaces of the dielectric board 101. Wherein, a dipole 120 is disposed on the dielectric plate 101, and the polarization directions of the two dipoles 120 are orthogonal to each other. The feeder line 110 corresponds to the two dipoles 120.
For the sake of clarity, the side of the radiating dipole panel 100 where the feeder line 110 is disposed is defined as up, and the side where the dipole 120 is disposed is defined as down in the following description. According to the present embodiment, the direction of the ultra-wideband dual-polarized radiation element 10 is defined, in the schematic diagram of the embodiment shown in fig. 2, a side surface of the feed line 110 is a front surface of the schematic diagram, and the feed line 110 is represented by a solid line; the dipole 120 is located on the side opposite to the schematic, and the dipole 120 is shown in dashed lines.
The low-frequency parasitic radiation plate 200 is disposed below the radiation oscillator plate 100, and the high-frequency parasitic radiation plate 300 is disposed above the radiation oscillator plate 100. When the feeder line 110 receives a radio frequency signal, an ultra-wideband electromagnetic wave, which includes a high-frequency electromagnetic wave and a low-frequency electromagnetic wave, is generated at the dipole 120 and radiated to the space. The low frequency electromagnetic wave can cause the metal wiring of the low frequency parasitic radiation plate 200 to generate a low frequency induced current by resonance. The low-frequency induced current causes the metal line of the low-frequency parasitic radiating plate 200 to generate a low-frequency band electromagnetic wave, and radiate the low-frequency band electromagnetic wave to the space.
In addition, the high-frequency electromagnetic wave can cause the metal wiring of the high-frequency parasitic radiation plate 300 to generate a high-frequency induced current by resonance. The high-frequency induced current causes the metal line of the high-frequency parasitic radiation plate 300 to generate a high-frequency band electromagnetic wave, and radiate the high-frequency band electromagnetic wave to a space.
The ultra-wideband dual-polarized radiating element 10 provided by the embodiment of the application can generate low-frequency band electromagnetic waves and high-frequency band electromagnetic waves simultaneously by using a simple design structure of the antenna radiating element, and radiate ultra-wideband electromagnetic waves to the space, thereby being beneficial to realizing the requirements of miniaturization, broadband and simple design of the antenna.
In this embodiment, the ultra-wideband dual-polarized radiating element 10 further includes a feeding balun 400. The feeding balun 400 is connected to the radiating dipole plate 100, and is used for supporting and feeding power to the radiating dipole plate 100. Referring to fig. 1, the feeding balun 400 extends from below the low frequency parasitic radiating plate 200 to the radiating dipole plate 100. In this embodiment, the feeding balun 400 includes two sets of balun structures, each set of balun structures including a coaxial cable (410, 420) and a metal post (430, 440). A set of coaxial cables (410 or 420) and metal posts (430 or 440) are respectively connected with two radiation oscillator arms (121, 122) of a dipole 120 which are oppositely arranged.
The feeding line 110 includes two feeding sub-lines, and they are arranged orthogonally to each other. Each feeder sub-line corresponds to each group of balun structures.
In the present embodiment, each dipole 120 includes a first radiating dipole arm 121 and a second radiating dipole arm 122 disposed opposite to each other. Each of the feed sub-lines includes a first end portion 113 and a second end portion 115, the first end portion 113 corresponding to the first radiating oscillator arm 121, and the second end portion 115 corresponding to the second radiating oscillator arm 122. The feeder sub-lines and the corresponding dipoles 120 are located on both side surfaces of the dielectric plate 101. In the present embodiment, there is an overlapping region between the first end portion 113 and the first radiating dipole arm 121, and the overlapping region is close to the center position of the corresponding dipole 120. The second end portion 115 and the second radiating oscillator arm 122 also have an overlapping region, and the corresponding vertical regions are two side regions on the second radiating oscillator arm 122 and passing through the center lines of the first radiating oscillator arm 121 and the second radiating oscillator arm 122.
In the present embodiment, the first and second radiating vibrator arms 121 and 122 each have a circular hole 123 therein, and the size of the circular hole 123 is set according to a selected operating frequency. Therefore, the first radiation oscillator arm 121 and the second radiation oscillator arm 122 are both annular.
Correspondingly, the overlapping region between the first end portion 113 and the first radiating dipole arm 121 is a circular ring region of the first radiating dipole arm 121 near the center of the dipole 120, as shown at point a in fig. 2. The overlapping area between the second end portion 115 and the second radiating vibrator arm 122 is a semicircular area on both sides of a center line passing through the first radiating vibrator arm 121 and the second radiating vibrator arm 122, as shown at points B and C in fig. 2.
Referring to fig. 3 and 4, fig. 3 is a schematic diagram of a feeding line of an upper side of a radiating dipole plate provided by an embodiment of the present application; fig. 4 is a schematic diagram of a positional relationship between a bypass metal hole and a radiation oscillator arm according to an embodiment of the present application.
A metal via hole 114 is formed at the point a, the metal via hole 114 penetrates through the first radiating oscillator arm 121, the dielectric plate 101 and the first end portion 113, an outer conductor of the coaxial cable is soldered to the first radiating oscillator arm 121 at a position corresponding to the point a, and an inner conductor thereof penetrates through the metal via hole 114 and is soldered to the point a of the first end portion 113. In the present embodiment, the feeder sub-line where the point a is located is defined as the first feeder sub-line 111. The rf signal is transmitted to the point a of the first feed sub-line 111 through the coaxial cable 410 and is transmitted to the second end 115 through its line. Since the second end portion 115 overlaps with two side regions of the second radiating oscillator arm 122, the rf signal can be coupled to the second radiating oscillator arm 122 overlapped with the second end portion 115. A metal post 430 is fixedly connected to the surface of the second radiating oscillator arm 122. The metal pillar 430 is connected to a region near the center of the corresponding dipole 120, and in fig. 4, the connection position of the metal pillar 430 and the second radiating dipole arm 122 is located at the position of point D. The metal post 430 and the coaxial cable 410 connected to the first radiating dipole arm 121 constituting the same dipole 120 constitute a balun structure. The position of the metal via 114 at the connection of the metal pillar 430 and the second radiating dipole arm 122 is symmetrical to the position of the D point at the connection of the coaxial cable 410 and the first radiating dipole arm 121 with respect to the intersection of the two first feeding sub-lines 121 and the second feeding sub-line 122.
Further, for the radiating dipole plate 100, the feeding balun 400 including two sets of balun structures is used for supporting and feeding. Referring to fig. 3, the feed line 110 includes a second feed sub-line 112 in addition to the above-mentioned first feed sub-line 111. The first feed sub-line 111 and the second feed sub-line 112 are orthogonally arranged. The first feeder sub-line 111 is entirely provided on the upper side of the dielectric plate 101, and the second feeder sub-line 112 is provided with two escape metal holes 117 at the intersection with the first feeder sub-line 111. The two avoiding metal holes 117 are located at two sides of the first feeder sub-line 111, and respectively penetrate through the second feeder sub-line 112, the dielectric plate 101 and the first radiating oscillator arm 121 of the corresponding dipole 120, and penetrate through the second feeder sub-line 112, the dielectric plate 101 and the second radiating oscillator arm 122 of the corresponding dipole 120. Referring to fig. 4, the second feeding sub-line 112 is wound to a side surface of the dielectric plate 101 where the corresponding dipole 120 is disposed through the two avoiding metal holes 117, and avoids the first feeding sub-line 111, so that the first feeding sub-line 111 and the second feeding sub-line 112 are not easily contacted, and a short circuit is avoided.
The radiation dipole arms of the mutually orthogonal dipoles 120 generate electromagnetic waves with mutually orthogonal polarizations under the coupling action of the first feed sub-circuit 111 and the second feed sub-circuit 112.
Referring to fig. 3, each of the feeding sub-lines has a Y-shaped structure, the second end portion 115 has a V-shape, and two branches 116 of the V-shape of the second end portion 115 overlap with corresponding second radiating oscillator arms 122. The second end portion 115 may also be a straight-line structure, a circular structure or a square structure, and both ends of the second end portion overlap with the corresponding second radiating oscillator arms 122, so as to couple the rf signal to the corresponding second radiating oscillator arms 122.
The ultra-wideband dual-polarized radiating element 10 provided by this embodiment further includes a fixing block 600 located below the low-frequency parasitic radiating plate 200, where the fixing block 600 is used to fix each coaxial cable (410, 420) and metal post (430, 440) in the feeding balun 400. In this embodiment, the fixing block 600 is made of a metal structure.
Referring to fig. 5, fig. 5 is a schematic diagram of a low-frequency parasitic radiation plate according to an embodiment of the present application.
In the present embodiment, the metal line on the low-frequency parasitic radiating plate 200 is defined as a first metal line 210. The first metal line 210 is a closed loop, and the circumference of the first metal line 210 corresponds to a low-frequency electromagnetic wave, and in this embodiment, the low-frequency electromagnetic wave is approximately 1/4 times the wavelength of the low-frequency electromagnetic wave. When the electromagnetic wave generated by the dipole 120 is radiated to the space, the first metal line 210 can generate a resonance effect according to the low-frequency electromagnetic wave radiated by the dipole 120, and a corresponding low-frequency induced current is generated in the first metal line 210. The first metal line 210 can generate a corresponding low-frequency band electromagnetic wave under the action of the low-frequency induced current, and radiate the low-frequency band electromagnetic wave to the space.
In this embodiment, a first through hole 220 is formed in the middle of the first metal line 210, and the feeding balun 400 is disposed through the first through hole 220 and connected to the radiating oscillator board 100.
In this embodiment, the first metal line 210 is a square closed loop, and may be a closed loop with other shapes.
Referring to fig. 1, the plastic posts 500 are fixed below the radiating vibrator plate 100 by mounting the plastic posts 500 through the first mounting holes 230 at the four corners of the low frequency parasitic radiating plate 200.
Referring to fig. 6, fig. 6 is a schematic diagram of a high-frequency parasitic radiation plate 300 according to an embodiment of the present application.
In the present embodiment, the metal line disposed on the high-frequency parasitic radiation plate 300 is the second metal line 310. The second metal lines 310 are four circular metal lines. The circular metal line is located above the corresponding first radiating oscillator arm 121 or first radiating oscillator arm 122. In the present embodiment, the circular metal line is directly above the corresponding first radiating oscillator arm 121 or the first radiating oscillator arm 122, so as to be able to sufficiently receive the electromagnetic wave generated by the corresponding radiating oscillator arm.
The circular metal line has a perimeter corresponding to a high-frequency electromagnetic wave, and in the present embodiment, is a low-frequency electromagnetic wave of approximately an integral multiple of the wavelength of the high-frequency electromagnetic wave of 1/4. When the electromagnetic wave generated by the dipole 120 is radiated to the space, the second metal line 310 can generate a resonance effect according to the high-frequency electromagnetic wave radiated by the corresponding radiating dipole arm, and a corresponding high-frequency induced current is generated in the second metal line 310. The second metal line 310 can generate corresponding high-frequency band electromagnetic waves under the action of the high-frequency induced current, and radiate the electromagnetic waves to the space.
In the present embodiment, a second via 320 is opened between four circular metal lines on the high-frequency parasitic radiating plate 300.
Referring to fig. 1, the plastic posts 500 are fixed above the radiating oscillator plate 100 by mounting the plastic posts 500 through the second mounting holes 330 at the four corners of the high-frequency parasitic radiating plate 300.
The ultra-wideband dual-polarized radiation unit 10 provided by the application can use the radiation oscillator board 100, the low-frequency parasitic radiation board 200 and the high-frequency parasitic radiation board 300 which are arranged in parallel as a radiation main body, and radiate low-frequency band electromagnetic waves and high-frequency band electromagnetic waves to a space through resonance excitation according to radio-frequency signals, so that the ultra-wideband radiation function can be realized by a simple structure, and the working bandwidth of the radiation unit is greatly expanded.
Fig. 10 is a schematic perspective view of an ultra-wideband dual-polarized antenna provided in an embodiment of the present application.
On the basis of the ultra-wideband dual-polarized radiation unit 10 provided in the above embodiment, the present application also provides an ultra-wideband dual-polarized antenna 1000. The ultra-wideband dual-polarized antenna 1000 comprises an ultra-wideband dual-polarized radiation unit 10 provided in any of the above embodiments, and a reflector plate 20 on which the ultra-wideband dual-polarized radiation unit 10 is mounted. A spacer 21 is disposed at an edge of each of the reflection plates 20 to adjust the isolation of the ultra-wideband dual-polarized antenna 1000.
Referring to fig. 7-9, fig. 7 is a graph illustrating isolation test of an ultra-wideband dual-polarized radiation antenna according to an embodiment of the present application; fig. 8 is a standing wave ratio test chart of an ultra-wideband dual-polarized radiation antenna provided by an embodiment of the present application; fig. 9 is a test chart of the radiation pattern of an ultra-wideband dual-polarized radiation antenna provided by an embodiment of the present application.
According to the above side views of fig. 7-9, the ultra-wideband dual-polarized radiation antenna 1000 provided by the present application can achieve a radiation frequency band of 2.41GHz-4 GHz while ensuring that the radiation pattern meets the requirements, a standing-wave ratio is less than 2.0, and a relative bandwidth is 49.6%. In the frequency band used at 5G: the standing-wave ratio of 2.515-2.675GHz and 3.4-3.6GHz is less than 1.35, the polarization isolation is more than 27dB, and the design requirements of the 5G Massive MIMO antenna on the radiation unit are completely met.
Fig. 11 is a schematic perspective view of an array of ultra-wideband dual-polarized antennas according to an embodiment of the present application.
An ultra-wideband dual-polarized antenna array 2000 is provided. The ultra-wideband dual-polarized antenna array 2000 comprises a plurality of ultra-wideband dual-polarized radiation units 10 provided in any of the above embodiments, and a reflector plate 20 on which the ultra-wideband dual-polarized radiation units 10 are mounted. Each reflection plate 20 can simultaneously mount a plurality of ultra-wideband dual-polarized radiation elements 10 according to the size. The edge of the reflecting plate 20 is provided with a partition 21, and a partition 21 is arranged between each ultra-wideband dual-polarized radiating element 10, so as to ensure the isolation between each ultra-wideband dual-polarized radiating element 10.
The ultra-wideband dual-polarized antenna array 2000 may also be formed by combining a plurality of independent ultra-wideband dual-polarized antennas provided above.
In the ultra-wideband dual-polarized antenna array 2000, each ultra-wideband dual-polarized antenna 1000 is relatively independent, and different individual ultra-wideband dual-polarized antennas in the ultra-wideband dual-polarized antenna array 2000 can be controlled according to use requirements, or a combination of a plurality of ultra-wideband dual-polarized antennas 1000 can be controlled. The radiation frequency band of the ultra-wideband dual-polarized antenna array 2000 can be further controlled and adjusted by controlling the radiation frequency band of each ultra-wideband dual-polarized antenna 1000. If the number of the ultra-wideband dual-polarized antennas 1000 in the ultra-wideband dual-polarized antenna array 2000 is larger, the capacity of the corresponding frequency band range is higher.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (13)
1. An ultra-wideband dual-polarized radiating element, comprising:
the radiating vibrator plate, the low-frequency parasitic radiating plate and the high-frequency parasitic radiating plate are arranged in parallel; the radiation oscillator plate is positioned between the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate;
the radiating element plate includes: the feed circuit comprises a dielectric plate, two dipoles with mutually orthogonal polarization directions and a feed circuit; the dipole is arranged on one side surface of the dielectric plate, and the feed circuit is arranged on the other side surface of the dielectric plate and is electrically connected with the dipole;
the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are respectively provided with metal circuits for inducing low-frequency electromagnetic waves and high-frequency electromagnetic waves; the metal circuit is used for obtaining corresponding induced current according to the coupling of the electromagnetic wave of the corresponding frequency band, and the induced current generates the electromagnetic wave of the corresponding frequency band to radiate to the space.
2. An ultra-wideband dual polarized radiating element according to claim 1, further comprising: a feed balun;
the feed balun is used for supporting the radiating oscillator plate and feeding power to the radiating oscillator plate.
3. An ultra-wideband dual polarized radiating element according to claim 2,
each dipole comprises a first radiating oscillator arm and a second radiating oscillator arm which are oppositely arranged;
the feed balun comprises two groups of balun structures, each group of balun structure comprises a coaxial cable and a metal column, and the coaxial cable and the metal column are respectively connected with the first radiation oscillator arm and the second radiation oscillator arm.
4. An ultra-wideband dual polarized radiating element according to claim 3,
the feed line comprises two feed sub-lines which are orthogonally arranged, and each feed sub-line corresponds to each group of balun structures;
each of the feed sub-lines includes a first end and a second end;
the first end part is overlapped with the first radiation dipole arm, and the corresponding overlapped area is close to the central position of the corresponding dipole; the second end part is overlapped with the second radiation oscillator arm, and the corresponding overlapped area is the area on two sides of the central line of the second radiation oscillator arm penetrating through the first radiation oscillator arm and the second radiation oscillator arm.
5. An ultra-wideband dual polarized radiating element according to claim 4,
the first radiating oscillator arm and the second radiating oscillator arm are both provided with circular holes, and the sizes of the circular holes are set according to a selected working frequency.
6. An ultra-wideband dual polarized radiating element according to claim 5,
a metal through hole is formed in the overlapping area of the first radiation oscillator arm and the first end part;
an outer conductor of the coaxial cable is soldered to a region of the first radiating element arm overlapping the first end portion;
the inner conductor of the coaxial cable penetrates through the metal through hole and is welded on the first end part through the metal through hole.
7. An ultra-wideband dual polarized radiating element according to claim 6,
the two orthogonally arranged feeder sub-circuits are respectively a first feeder sub-circuit and a second feeder sub-circuit;
the first feed sub-line is arranged on one surface of the dielectric plate, two avoidance metal holes are arranged at the intersection of the second feed sub-line and the first feed sub-line, the two avoidance metal holes penetrate through the dielectric plate, and the second feed sub-line penetrates through and transmits along the two avoidance metal holes.
8. An ultra-wideband dual polarized radiating element according to any one of claims 2 to 7, further comprising: the fixing block is arranged below the low-frequency parasitic radiation plate;
the fixing block fixes the coaxial cable and the metal column.
9. An ultra-wideband dual polarized radiating element according to claim 1,
the metal circuit arranged on the low-frequency parasitic radiation plate is a first metal circuit which is a closed ring;
a range of a circumference of the first metal line: the operating frequency band of the dual-polarized radiation unit is 1/4 integral multiple of the wavelength of the low-frequency band electromagnetic wave.
10. An ultra-wideband dual polarized radiating element according to claim 1,
the metal circuits arranged on the high-frequency parasitic radiation plate are second metal circuits, and the second metal circuits are four circular metal circuits;
each circular metal circuit is over against the circular hole of the corresponding radiation oscillator arm, and the range of the circumference of the circular metal circuit is in integral multiple of 1/4 high-frequency band electromagnetic wave wavelength of the working frequency band of the dual-polarized radiation unit.
11. An ultra-wideband dual polarized radiating element according to claim 1,
the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate are fixedly connected with the radiation oscillator plate through plastic columns located in four corner regions of the low-frequency parasitic radiation plate and the high-frequency parasitic radiation plate.
12. An ultra-wideband dual-polarized antenna, comprising:
an ultra-wideband dual-polarized radiating element as claimed in any one of claims 1 to 11, and a reflecting plate on which said ultra-wideband dual-polarized radiating element is mounted; and the edge of the reflecting plate is provided with a partition plate.
13. An ultra-wideband dual-polarized antenna array, comprising:
a plurality of ultra-wideband dual-polarized radiating elements as recited in any of claims 1-11, and a reflector plate on which said ultra-wideband dual-polarized radiating elements are mounted;
the edge of the reflecting plate is provided with a partition plate, and a partition plate is arranged between every two ultra-wideband dual-polarized radiation units.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011010071.1A CN112038758A (en) | 2020-09-23 | 2020-09-23 | Ultra-wideband dual-polarized radiation unit, antenna and antenna array |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011010071.1A CN112038758A (en) | 2020-09-23 | 2020-09-23 | Ultra-wideband dual-polarized radiation unit, antenna and antenna array |
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| CN202011010071.1A Pending CN112038758A (en) | 2020-09-23 | 2020-09-23 | Ultra-wideband dual-polarized radiation unit, antenna and antenna array |
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| CN112713396A (en) * | 2020-12-21 | 2021-04-27 | 北京机电工程研究所 | Dual-frequency miniaturized dipole antenna with rectangular back cavity |
| CN112864592A (en) * | 2020-12-31 | 2021-05-28 | 京信通信技术(广州)有限公司 | Antenna and radiation unit used by same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112713396A (en) * | 2020-12-21 | 2021-04-27 | 北京机电工程研究所 | Dual-frequency miniaturized dipole antenna with rectangular back cavity |
| CN112713396B (en) * | 2020-12-21 | 2022-10-18 | 北京机电工程研究所 | Dual-frequency miniaturized dipole antenna with rectangular back cavity |
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| CN114696072A (en) * | 2020-12-31 | 2022-07-01 | 华为技术有限公司 | Tightly-coupled array antenna and network equipment |
| CN114696072B (en) * | 2020-12-31 | 2023-09-01 | 华为技术有限公司 | Tightly coupled array antenna and network equipment |
| CN113013611A (en) * | 2021-05-18 | 2021-06-22 | 成都天锐星通科技有限公司 | Antenna board and antenna system |
| WO2023035391A1 (en) * | 2021-09-07 | 2023-03-16 | 华南理工大学 | Dual-frequency dual-polarized antenna and dual-frequency dual-polarized antenna array |
| CN114361779A (en) * | 2021-12-30 | 2022-04-15 | 华南理工大学 | Antenna device and low-frequency wave-transparent oscillator |
| CN114361779B (en) * | 2021-12-30 | 2022-11-29 | 华南理工大学 | Antenna device and low-frequency wave-transparent oscillator |
| CN114824764A (en) * | 2022-05-28 | 2022-07-29 | 广东浩信通信科技有限公司 | High-gain ultra-wideband dual-polarized directional oscillator |
| CN115411517A (en) * | 2022-10-11 | 2022-11-29 | 嘉兴诺艾迪通信科技有限公司 | Broadband directional panel antenna of crab pincer-shaped oscillator |
| CN115411517B (en) * | 2022-10-11 | 2024-01-23 | 嘉兴诺艾迪通信科技有限公司 | Broadband directional panel antenna of crab pincer-shaped vibrator |
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