CN113422212B - 5G antenna, array antenna, and phased array device - Google Patents
5G antenna, array antenna, and phased array device Download PDFInfo
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- CN113422212B CN113422212B CN202110690173.0A CN202110690173A CN113422212B CN 113422212 B CN113422212 B CN 113422212B CN 202110690173 A CN202110690173 A CN 202110690173A CN 113422212 B CN113422212 B CN 113422212B
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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
- H01Q1/36—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
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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Abstract
The invention discloses a 5G antenna, an array antenna and a phased array device. The 5G antenna comprises a dielectric substrate, a first radiator and a second radiator. The dielectric substrate is provided with a first plate surface and a second plate surface which are opposite, the first plate surface is provided with a feed portion, and the second plate surface is provided with a grounding portion. The first radiator is arranged on the first plate surface of the dielectric substrate and is connected with the feed portion through a first microstrip line. The second radiator is arranged on the second plate surface of the dielectric substrate and is connected with the grounding part through a second microstrip line. The first microstrip line and the second microstrip line are in corresponding positions, and the first radiator and the second radiator are arranged in axial symmetry by taking the first microstrip line or the second microstrip line as an axis. The invention adopts the Bow-tie antenna structure, realizes the miniaturization of the phased array antenna, has good directivity, is easy to manufacture and integrate, and can be applied to small intelligent equipment.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a 5G antenna, an array antenna and a phased array device.
Background
New research and technological expansion of fifth generation (5G) mobile communication systems has begun due to the increasing demand for higher data rate applications such as wireless broadband connections and highly reliable networks in the future. Compared with the previous generations, the 5G mobile communication network will use a wider millimeter wave frequency bandwidth, which can be obtained by increasing the operating frequency.
The phased array antenna controls the beam forming and beam scanning of the antenna by controlling the phase delay of microwave signals of each antenna element, has the advantages of quick and flexible scanning and high beam pointing precision, but also has the defects of large volume, high cost, difficulty in integration and the like.
Disclosure of Invention
The invention provides a 5G antenna, an array antenna and a phased array device, aiming at realizing miniaturization of the phased array antenna.
In order to achieve the above object, the present invention provides a 5G antenna applied to a phased array antenna, wherein the 5G antenna includes:
the dielectric substrate is provided with a first plate surface and a second plate surface which are opposite, the first plate surface is provided with a feed part, and the second plate surface is provided with a grounding part;
the first radiator is arranged on the first plate surface of the dielectric substrate and is connected with the feed part through a first microstrip line; and
the second radiator is arranged on the second plate surface of the dielectric substrate and is connected with the grounding part through a second microstrip line;
the first microstrip line and the second microstrip line are in corresponding positions, and the first radiator and the second radiator are arranged in axial symmetry by taking the first microstrip line or the second microstrip line as an axis.
In an embodiment, the ground portion is provided with an open slot, and the second microstrip line is connected to a slot bottom of the open slot.
In an embodiment, the open slot has a first side and a second side extending along a slot bottom direction of the open slot, a distance from the first side to the second microstrip line decreases progressively along the slot bottom direction of the open slot, and a distance from the second side to the second microstrip line decreases progressively along the slot bottom direction of the open slot.
In an embodiment, the width of the bottom of the open slot is equal to the width of the second microstrip line;
the second microstrip line divides the open slot into a first triangular sub-slot and a second triangular sub-slot,
the bottom width of the first triangular subslot is greater than the width of the first microstrip line, the bottom width of the second triangular subslot is consistent with the bottom width of the first triangular subslot, the height of the first triangular subslot is greater than the bottom width of the first triangular subslot, and the height of the second triangular subslot is consistent with the height of the first triangular subslot;
the distance between one end of the second microstrip line connected with the second radiator and the notch of the open slot is greater than the width of the bottom of the first triangular subslot.
In one embodiment, the length of the grounding portion is consistent with the width of the dielectric substrate, and the width of the grounding portion is smaller than half of the length of the dielectric substrate.
In an embodiment, the first microstrip line and the second microstrip line have the same width, and the length of the first microstrip line is greater than the width of the ground portion.
In an embodiment, the first radiator and the second radiator are both hexagonal-shaped.
In an embodiment, the hexagon has a first side, a second side, a third side, a fourth side, a fifth side and a sixth side which are connected in sequence, the first side and the sixth side of the hexagon are respectively connected with the microstrip line, the second side and the fifth side of the hexagon are parallel, the distance between the second side and the fifth side of the hexagon is larger than the height of the first triangular subslot, and the perpendicular distance between the intersection point of the third side and the fourth side of the hexagon and the side, close to the hexagon, of the microstrip line is larger than the distance between the second side and the fifth side of the hexagon.
The present invention also provides an array antenna, including:
the 5G antennas are arranged in a linear array mode, and grounding parts of the 5G antennas are connected with each other.
The present invention also provides a phased array antenna apparatus including:
a controller;
a phase shifter; and
the above-mentioned array antenna;
the output end of the controller is connected with the first end of the phase shifter, the second end of the phase shifter is connected with the array antenna, and the phase shifter is used for controlling the feeding phase of the 5G antenna in the array antenna according to the phase shift value output by the controller.
The invention adopts the Bow-tie antenna structure to realize the miniaturization of the phased array antenna. The hexagonal Bow-tie antenna structure achieves high gain and a wide bandwidth. The electromagnetic wave of antenna radiation reflects between the first face of dielectric substrate and second face, forms the end radiation mode, and the directive property is good, and easily makes and integrate, can be applied to among the small-size smart machine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first plate surface of a dielectric substrate of an antenna 5G according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second plate surface of the antenna dielectric substrate according to embodiment 5G of the present invention;
fig. 3 is a schematic structural diagram of an array antenna according to an embodiment of the present invention;
FIG. 4 is a diagram of simulation parameters of an array antenna according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a phased array antenna apparatus according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides a 5G antenna applied to a phased array antenna, and in an embodiment, the 5G antenna includes a dielectric substrate, a first radiator 11, and a second radiator 21.
The dielectric substrate has a first plate surface 10 and a second plate surface 20 opposed to each other, the first plate surface 10 is provided with a power feeding portion 13, and the second plate surface 20 has a ground portion 23.
The first radiator 11 is disposed on the first plate surface 10 of the dielectric substrate and is connected to the feeding portion 13 through a first microstrip line 12.
The second radiator 21 is disposed on the second plate surface 20 of the dielectric substrate and is connected to the ground 23 through a second microstrip line 22.
The first microstrip line 12 and the second microstrip line 22 are located correspondingly, and the first radiator 11 and the second radiator 21 are arranged in axial symmetry with the first microstrip line 12 or the second microstrip line 22 as an axis.
The feed circuit of the 5G antenna feeds power to the first radiator 11 through the first microstrip line 12 connected to the feed portion 13 of the first plate surface 10 of the dielectric substrate, current changes at the connection of the first radiator 11 and the first microstrip line 12 to generate a changing magnetic field, and antenna resonance is caused at the connection of the first radiator 11 and the first microstrip line 12 and at the connection of the second radiator 21 and the second microstrip line 22. The main direction of the current in the radiators and microstrip lines is the same as the orientation of the first radiator 11, i.e. the main radiating direction of the antenna. The electromagnetic wave is reflected between the first plate surface 10 and the second plate surface 20 of the dielectric substrate to form an electromagnetic beam having the same main direction as the current, and an end radiation mode is formed. The wide plane of the grounding part 23 of the second plate surface 20 of the dielectric substrate has the function of current blocking, and the rear lobe radiation of the 5G antenna can be inhibited.
The Bow-tie antenna is a line antenna developed from a symmetrical array and has the advantages of planar structure, wide frequency band, easiness in processing and easiness in integration. The upper and lower arms of the antenna are similar to bow-tie shape. The invention adopts the Bow-tie antenna structure, has small size and low cost, and is easy to manufacture and integrate. The Bow-tie antenna structure has a wide bandwidth, and good directivity and high gain are realized through an end radiation mode. The phased array antenna can make up for the defects of large volume, high cost, difficulty in integration and the like, and is convenient to integrate in small intelligent equipment.
In an embodiment, the shape of the first radiator 11 and the second radiator 21 may be a triangle, a quadrangle, or a hexagon. The shape of the first radiator 11 and the second radiator 21 may change the current distribution of the antenna, affecting the bandwidth of the antenna. In the application, when the first radiator 11 and the second radiator 21 are hexagonal, the bandwidth of the antenna is the widest, and the overall performance of the antenna is the best.
In one embodiment, the grounding portion 23 is provided with an open slot, and the second microstrip line 22 is connected to the slot bottom of the open slot. The open slot can change the current direction in the antenna, thereby changing the radiation direction of electromagnetic waves and improving the radiation performance of the antenna in the main radiation direction.
In an embodiment, the open slot has a first side and a second side extending along the slot-to-slot bottom direction of the open slot, the distance from the first side to the second microstrip line 22 decreases progressively along the slot-to-slot bottom direction of the open slot, and the distance from the second side to the second microstrip line 22 decreases progressively along the slot-to-slot bottom direction of the open slot. The open slot is trapezoidal in shape, and the second microstrip line 22 divides the open slot into two sub-slots. The direction of the current is changed when the current passes through the two subslots, so that more electromagnetic waves are radiated in the main radiation direction of the antenna, and the radiation performance of the antenna in the main radiation direction is improved.
In the above embodiment, the width of the bottom of the open slot is equal to the width of the second microstrip line 22.
The second microstrip line 22 divides the open slot into a first triangular sub-slot and a second triangular sub-slot,
the width of the bottom of the first triangular subslot is greater than that of the first microstrip line 11, the width of the bottom of the second triangular subslot is the same as that of the first triangular subslot, the height of the first triangular subslot is greater than that of the first triangular subslot, and the height of the second triangular subslot is the same as that of the first triangular subslot.
The distance from the end of the second microstrip line 22 connected to the second radiator to the notch of the open slot is greater than the width of the bottom of the first triangular sub-slot.
In one embodiment, the width T1 of the bottom of the first triangular subslot is 0.52 mm, the width T1 of the bottom of the second triangular subslot is equal to T1, the height T2 of the first triangular subslot is 1.04 mm, and the width T2 of the bottom of the second triangular subslot is equal to T2.
The distance L1 from one end of the second radiator 21 connected to the second microstrip line 22 to the notch of the open slot is 0.9 mm.
In the above embodiment, two triangular subslots are formed between the second microstrip line 22 and the ground 23. The triangular subslot can change the current direction in the antenna, so that electromagnetic waves are radiated in the main direction of the antenna more, and the radiation performance of the antenna in the main radiation direction is improved.
In one embodiment, the length of the grounding portion 23 is equal to the width of the dielectric substrate, and the width of the grounding portion 23 is less than half of the length of the dielectric substrate.
In one embodiment, the dielectric substrate is an Arlon AR350 substrate, and has a length L0 of 4.6 mm, a width W0 of 4.6 mm, and a thickness H of 0.5 mm. The length of the land portion 23 is equal to the width W0 of the dielectric substrate, and the width L3 of the land portion 23 is 2.1 mm. The Arlon AR350 substrate has a dielectric constant ∈ r =3.5 and a loss tangent δ =0.0026. It is understood that the larger the dielectric constant, the smaller the radiation efficiency of the antenna, and the loss tangent is inversely proportional to the quality factor of the antenna. The dielectric constant of the PCB of the common FR4 material relative to the air is 4.2-4.7, the tangent angle loss is 0.025 under the condition of 1MHz, the radiation efficiency of the 5G antenna can be effectively improved by the smaller dielectric constant of the Arlon AR350 substrate, and the quality factor of the 5G antenna can be effectively improved by the smaller tangent loss angle.
In the above embodiment, the wide plane of the ground 23 has the function of blocking current, and can effectively suppress the radiation back lobe of the 5G antenna. The lobe in which the main radiation direction of the antenna is located is called the radiation main lobe of the antenna, and the radiation rear lobe of the antenna is the lobe which is completely opposite to the main lobe direction. The radiation of the antenna in an unnecessary direction can be inhibited by inhibiting the antenna back lobe, and the directional radiation performance of the antenna is improved.
In one embodiment, the widths of the first microstrip line 12 and the second microstrip line 22 are the same, and the length of the first microstrip line 12 is greater than the width of the grounding portion 23.
In one embodiment, the width W1 of the first microstrip line 12 is 0.36 mm, and the length L2 of the first microstrip line 12 is 2.9 mm.
In the above embodiment, the first microstrip line 12 and the second microstrip line 22 are printed microstrip lines. The resonance point of the antenna can be adjusted by changing the widths of the first microstrip line 12 and the second microstrip line 22, and in application, when the widths of the first microstrip line 12 and the second microstrip line 22 are 0.36 mm, the resonance point of the 5G antenna falls in a high frequency band, and the comprehensive performance of the antenna is best.
In one embodiment, the first radiator 11 and the second radiator 21 are both hexagonal-shaped.
The hexagonal antenna shape can change the current distribution in the antenna and expand the bandwidth of the antenna. The antenna has small size, low cost and simple structure, and can effectively reduce the size of the antenna when being applied to a phased array antenna.
In one embodiment, the first radiator 11 and the first radiator 11 are hexagonal patches.
The hexagon has the first side that connects gradually, the second limit, the third side, the fourth side, fifth side and sixth side, hexagonal first side and sixth side are connected with the microstrip line respectively, hexagonal second side and fifth side are parallel, distance between hexagonal second side and the fifth side is greater than the height of first triangle-shaped subslot, the perpendicular distance between the crossing point of hexagonal third side and fourth side and one side that the microstrip line is close to the hexagon is greater than the distance between hexagonal second side and the fifth side.
In one embodiment, the distance L4 between the second side and the fifth side of the hexagon is 1.125 mm, and the perpendicular distance W2 between the intersection point of the third side and the fourth side of the hexagon and the side of the microstrip line close to the hexagon is 1.5075 mm.
The hexagonal antenna shape can change the current distribution in the antenna and expand the bandwidth of the antenna. The patch antenna is easy to manufacture and integrate and convenient to produce.
The principles of the present invention will be described in detail below with reference to the accompanying drawings:
the feeder feeds power to the first radiator 11 through the first microstrip line 12 connected to the power feeding portion 13 of the first plate surface 10 of the dielectric substrate, and the current changes at the connection between the first radiator 11 and the first microstrip line 12 and at the connection between the second radiator 21 and the second microstrip line 22 to generate a changing magnetic field, so that the 5G antenna generates a resonance point between 26.5GHz and 37 GHz. The main direction of the current is the same as the direction of the first radiator 11, i.e. the main radiation direction of the antenna is the direction toward which the first radiator 11 faces. The resonance point of the 5G antenna can be adjusted by adjusting the widths of the first microstrip line 12 and the second microstrip line 22, and in an application, when the width is 0.36 mm, the resonance point just falls in the range of 26.5GHz to 37GHz, and the comprehensive performance of the antenna is the best. The electromagnetic wave radiated by the antenna is reflected between the first plate surface 10 and the second plate surface 20 of the dielectric substrate to form an electromagnetic wave beam with the same current main direction, and then an end radiation mode is formed. The small dielectric constant and the tangent loss angle of the Arlon AR350 substrate effectively improve the radiation efficiency and the quality factor of the antenna. The wide plane of the grounding part 23 on the second plate surface 20 of the dielectric substrate has the function of current blocking, and can inhibit the radiation back lobe of the antenna; the two triangular grooves between the second microstrip line 22 and the grounding portion 23 can change the current direction, and further change the direction of the magnetic field, so as to improve the radiation performance of the antenna in the main radiation direction. The hexagonal shape of the first radiator 11 and the second radiator 21 changes the current distribution in the antenna, and the bandwidth of the antenna can be expanded. Because the printed microstrip antenna and the hexagonal patch are used, the overall size of the antenna is 4.6 multiplied by 0.5 cubic millimeter, and the antenna has the characteristic of miniaturization.
The invention adopts a Bow-tie antenna structure, realizes miniaturization by using a microstrip antenna, has the overall size of 4.6 multiplied by 0.5 cubic millimeter and occupies small space. And low cost, easy to manufacture and integrate. The Bow-tie antenna structure has a wide bandwidth, and good directivity and high gain are realized through an end radiation mode. The phased array antenna can make up for the defects of large volume, high cost, difficulty in integration and the like. Suitable for integration in small communication devices.
The invention also provides an array antenna which is applied to a phased array antenna and comprises a plurality of the 5G antennas, the 5G antennas are arranged in a linear array, and the grounding parts of the 5G antennas are mutually connected.
In an embodiment, the dielectric substrates of the plurality of 5G antennas are integrally disposed, the plurality of 5G antennas are arranged in a linear array on the integrally disposed dielectric substrate, and the grounding portions of the plurality of 5G antennas are connected to each other along the length direction of the dielectric substrate. The detailed structure of the 5G antenna can refer to the above embodiments, and is not described herein again; it can be understood that, because the array antenna of the present invention uses the 5G antenna, the embodiment of the array antenna of the present invention includes all technical solutions of all embodiments of the 5G antenna, and the achieved technical effects are also completely the same, and are not described herein again.
In the above-described embodiments, the number of 5G antennas in the array antenna may be six, seven, or eight.
Referring to fig. 3, in an embodiment, the array antenna includes eight 5G antennas, the eight 5G antennas are arranged in a linear array on an integrally disposed dielectric substrate, and the ground portions of the eight 5G antennas are connected to each other along a length direction of the dielectric substrate.
The dielectric substrate of the array antenna has a first plate surface 100 and a second plate surface 200 which are opposite to each other, and eight grounding parts are arranged on the second plate surface 200 and connected with each other along the length direction of the dielectric substrate. The eight feeding portions and the eight first microstrip lines are arranged on the first board surface 100, the eight feeding portions are arranged in a linear array at certain intervals, and the eight first microstrip lines are correspondingly connected with the eight feeding portions respectively.
The feed point circuit feeds power to the eight first radiators through the eight first microstrip lines connected with the eight feed parts respectively, current changes at the joint of each first radiator and each first microstrip line to generate a changing magnetic field, and resonance is generated at the joint of each first microstrip line and each first radiator and the joint of each second microstrip line and each second radiator. The main radiation direction of the antenna array is the same as the orientation of the first radiator. The electromagnetic wave is reflected between the first plate surface 100 and the second plate surface 200 of the dielectric substrate to form an electromagnetic beam with the same main direction as the current, and then an end radiation mode is formed. The wide plane of the ground portion of the second plate surface 200 of the dielectric substrate has a function of blocking current, and can suppress the back lobe radiation of the 5G antenna.
Referring to fig. 4, fig. 4 is a simulation S parameter diagram of an array antenna provided in the present invention. As can be seen from fig. 3, the array antenna provided by the present invention generates two resonance points in the operating frequency band range of 26.5GHz to 37GHz, which are respectively about 28.5G and about 32G; the return loss of the array antenna is small, and the radiation performance of the array antenna is good; the isolation between the 5G antennas is high, and the signal interference between the 5G antennas is small; the array antenna has large peak gain and good directivity.
The 5G antenna has the characteristics of miniaturization, low cost and easiness in manufacturing and integration, and can make up for the defects of large volume, high cost, difficulty in integration and the like when applied to a phased array antenna. The device is suitable for being integrated in small-sized communication equipment and occupies small space.
The present invention also provides a phased array antenna apparatus including a controller 300, a phase shifter 400, and the above-described array antenna 500.
The output terminal of the controller 300 is connected to the first terminal of the phase shifter 400, the second terminal of the phase shifter 400 is connected to the array antenna 500, and the phase shifter 400 is configured to control the feeding phase of the 5G antenna in the array antenna 500 according to the phase shift value output by the controller 300. The direction of the maximum of the antenna pattern, i.e., the main radiation direction of the array antenna 500, can be changed by changing the feeding phase, so as to realize beam scanning.
The detailed structure of the array antenna can refer to the above embodiments, and is not described herein; it can be understood that, because the phased array antenna apparatus of the present invention uses the array antenna, the embodiments of the phased array antenna apparatus of the present invention include all technical solutions of all embodiments of the array antenna, and the achieved technical effects are also completely the same, and are not described herein again.
The invention realizes the miniaturization of the 5G antenna through the Bow-tie antenna structure, and further realizes the miniaturization of the phased array antenna device. The invention occupies small space. The phased array antenna is low in cost, easy to manufacture and integrate, capable of overcoming the defects that a traditional phased array antenna is large in size, high in cost, difficult to integrate and the like, and suitable for being applied to small communication equipment.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A5G antenna applied to a phased array antenna, characterized in that the 5G antenna comprises:
the dielectric substrate is provided with a first plate surface and a second plate surface which are opposite, the first plate surface is provided with a feed part, and the second plate surface is provided with a grounding part;
the first radiator is arranged on the first plate surface of the dielectric substrate and is connected with the feed part through a first microstrip line; and
the second radiator is arranged on the second plate surface of the dielectric substrate and is connected with the grounding part through a second microstrip line;
the first microstrip line and the second microstrip line are in corresponding positions, and the first radiator and the second radiator are arranged in axial symmetry by taking the first microstrip line or the second microstrip line as an axis;
the grounding part is provided with an open slot, and the second microstrip line is connected to the bottom of the open slot;
the width of the bottom of the open slot is equal to that of the second microstrip line, and the second microstrip line divides the open slot into a first triangular subslot and a second triangular subslot;
the first radiator and the second radiator are both hexagonal.
2. The 5G antenna of claim 1, wherein the open slot has a first side and a second side extending in a slot-to-slot bottom direction thereof, a distance from the first side to the second microstrip line decreases in the slot-to-slot bottom direction of the open slot, and a distance from the second side to the second microstrip line decreases in the slot-to-slot bottom direction of the open slot.
3. The 5G antenna according to claim 2, wherein the bottom width of the first triangular subslot is greater than the width of the first microstrip line, the bottom width of the second triangular subslot is equal to the bottom width of the first triangular subslot, the height of the first triangular subslot is greater than the bottom width of the first triangular subslot, and the height of the second triangular subslot is equal to the height of the first triangular subslot;
the distance between one end of the second microstrip line connected with the second radiator and the notch of the open slot is greater than the width of the bottom of the first triangular subslot.
4. The 5G antenna of any one of claims 1-3, wherein the length of the ground portion is consistent with the width of the dielectric substrate, and the width of the ground portion is less than half the length of the dielectric substrate.
5. The 5G antenna according to claim 4, wherein the first microstrip line and the second microstrip line have the same width, and the length of the first microstrip line is greater than the width of the ground portion.
6. The 5G antenna according to claim 5, wherein the hexagon has a first side, a second side, a third side, a fourth side, a fifth side and a sixth side which are connected in sequence, the first side and the sixth side of the hexagon are respectively connected with the microstrip line, the second side and the fifth side of the hexagon are parallel, the distance between the second side and the fifth side of the hexagon is larger than the height of the first triangular subslot, and the perpendicular distance between the intersection point of the third side and the fourth side of the hexagon and the side of the microstrip line close to the hexagon is larger than the distance between the second side and the fifth side of the hexagon.
7. An array antenna, comprising:
a plurality of 5G antennas as claimed in any one of claims 1 to 6, the plurality of 5G antennas being arranged in a linear array, and the grounds of the plurality of 5G antennas being connected to each other.
8. A phased array antenna apparatus, characterized in that the phased array antenna apparatus comprises:
a controller;
a phase shifter; and
an array antenna according to claim 7;
the output end of the controller is connected with the first end of the phase shifter, the second end of the phase shifter is connected with the array antenna, and the phase shifter is used for controlling the feeding phase of the 5G antenna in the array antenna according to the phase shift value output by the controller.
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| CN202110690173.0A CN113422212B (en) | 2021-06-22 | 2021-06-22 | 5G antenna, array antenna, and phased array device |
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| CN202110690173.0A CN113422212B (en) | 2021-06-22 | 2021-06-22 | 5G antenna, array antenna, and phased array device |
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