CN111600136A - High-isolation high-gain large-scale MIMO antenna applied to wireless local area network - Google Patents
High-isolation high-gain large-scale MIMO antenna applied to wireless local area network Download PDFInfo
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- CN111600136A CN111600136A CN202010626610.8A CN202010626610A CN111600136A CN 111600136 A CN111600136 A CN 111600136A CN 202010626610 A CN202010626610 A CN 202010626610A CN 111600136 A CN111600136 A CN 111600136A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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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
- H01Q1/52—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
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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Abstract
The invention discloses a high-isolation high-gain large-scale MIMO antenna applied to a wireless local area network, which comprises a first medium substrate, a second medium substrate and a third medium substrate, wherein the first medium substrate comprises 4 symmetrical H-shaped metal patches and 4 windmill-shaped metal patches, the 4H-shaped metal patches are arranged in a central symmetry manner, and the 4 windmill-shaped metal patches are arranged in a central symmetry manner; the lower surface of the first medium substrate comprises 4 windmill-shaped patches which are arranged in central symmetry; the second dielectric plate is sleeved in the circular through hole of the first dielectric plate in a clearance mode, and the Bluetooth antenna is laid on the surface of the second dielectric plate; the reflector is printed on the upper surface of the third dielectric substrate, and four sides of the reflector are provided with T-shaped grooves; the short circuit arm at the end of the metal radiating array is connected to the third dielectric plate, and the 4 metal radiating arrays are arranged in a centrosymmetric mode. The invention covers wifi frequency band, has high antenna isolation, good performance and low whole antenna section, and is suitable for being applied to AP equipment of ceiling or wall.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a high-isolation high-gain large-scale MIMO antenna applied to a wireless local area network.
Background
In 2010, Thomas l.mreta proposed a Massive MIMO technology concept, namely Massive MIMO. In a TDD large-scale MMO system, a base station can estimate downlink channel state information (CsI) through a pilot sequence of a reverse link, and can reduce interference between cells and users only by adopting simple preprocessing without cooperation between the base stations. It is also noted that uncorrelated additive noise and fast fading vanishes with infinite increase in the number of antennas. Since the concept of massive MIMO was proposed, a large group of scholars began to turn to the study of massive MIMO.
The large-scale MIMO technology is a multi-antenna technology in which a large-scale antenna array is adopted at a base station, the number of antennas exceeds ten, even hundreds, and multiple users are served in the same time-frequency resource. In consideration of user mobility and low complexity handling of the device terminal, the user terminal generally employs a single antenna system, or a small number of multiple antenna systems.
The current massive MIMO antenna has the following disadvantages:
1. poor antenna pattern, non-uniform coverage, poor circularity of antenna coverage,
2. the antenna isolation is low, and the antennas are close to each other due to the fact that the number of the antennas is large.
Disclosure of Invention
The invention aims to provide a high-isolation high-gain large-scale MIMO antenna applied to a wireless local area network, which covers a wifi frequency band, has good performance and a low whole antenna profile, and is suitable for being applied to AP equipment on a ceiling or a wall.
The technical scheme adopted by the invention is as follows:
a high-isolation high-gain massive MIMO antenna applied to a wireless local area network comprises a first dielectric plate, a second dielectric plate and a third dielectric plate,
a circular through hole is formed in the center of the first dielectric plate, the second dielectric plate is sleeved in the circular through hole in a clearance mode, a circular patch is arranged in the center of the upper surface of the second dielectric plate, a non-closed annular patch is sleeved on the periphery of the circular patch in a clearance mode, a non-concentric circular patch is arranged on the lower surface of the second dielectric plate, the circle center of the non-concentric circular patch is staggered relative to the circle center of the circular patch, and the non-closed annular patch is in short connection with the non-concentric circular patch on the lower surface through a metal through hole, so that.
The upper surface and the lower surface of the first medium plate are respectively and correspondingly printed with an upper radiation oscillator and a lower radiation oscillator, the upper radiation oscillator comprises 4 pairs of concave metal paster pairs and 4 windlass type pasters, the 4 pairs of concave metal paster pairs and the 4 windlass type pasters are arranged around the concentric circumference of the circular through hole in a staggered and spaced mode, the 4 windlass type pasters are arranged in a central symmetry mode and are distributed on the same relative inner circumference, the 4 pairs of concave metal paster pairs are arranged in a central symmetry mode and are distributed on the same relative outer circumference,
the lower radiation oscillator comprises 4 lower windmill type patches which are overlapped with the 4 upper windmill type patches on the upper surface of the first medium plate, the blades of the upper windmill type patches and the lower windmill type patches are arranged in a mirror image manner, the upper windmill type patches and the lower windmill type patches at the same position form a windmill-shaped metal patch,
the third dielectric plate is coaxially arranged below the second dielectric plate, a reflector is printed on the upper surface of the third dielectric plate, and T-shaped grooves are formed in the four sides of the reflector relative to the third dielectric plate; the 4 metal radiation oscillators are arranged at four corners of the upper surface of the reflector in a central symmetry manner, and the short circuit arms of the metal radiation oscillators are in short circuit with the reflector on the third dielectric slab.
Further, the shape of the first dielectric slab is regular octagon, the shape of the second dielectric slab is circular, the shape of the third dielectric slab is square, and the material of the first dielectric slab, the second dielectric slab and the third dielectric slab is FR 4.
Furthermore, each pair of the concave metal patches comprises two concave metal patches which are mirror images of each other, and the concave metal patches form directional radiation under the action of the reflector.
Furthermore, the upper windmill type patch and the lower windmill type patch both comprise a cross microstrip line, one end of each cross microstrip line is provided with a triangular fan blade, the current on the triangular fan blade is in a closed loop, and the upper windmill type patch and the lower windmill type patch are matched to form omnidirectional radiation.
Furthermore, 4 pairs of concave metal patches and 4 windmill-shaped metal patches are arranged in a crossed manner and are uniformly distributed in eight directions of the eight diagrams in a central symmetry manner, the arrangement not only improves the isolation between the metal patches, but also enables the directional diagram to cover all directions.
Furthermore, an arc through hole is formed between every two adjacent windmill-shaped metal patches, rectangular through holes are formed in the peripheries of the two ends of each arc through hole and correspond to the two sides of the corresponding concave-shaped metal patch pair respectively, one end of each rectangular through hole is communicated with the corresponding arc through hole, and the other end of each rectangular through hole is arranged at intervals with the corresponding edge of the corresponding first dielectric plate.
Furthermore, the reflector patch is in a rectangular frame shape, and each T-shaped groove on the third dielectric slab corresponds to the center of the side edge of the rectangular frame patch respectively; the four T-shaped grooves have the same size, and the isolation among the 4 metal radiating oscillators is increased by the four T-shaped grooves.
Further, the transverse edge of each T-shaped groove is parallel to the side edge of the corresponding rectangular frame patch, and the vertical edge of each T-shaped groove is perpendicular to the side edge of the corresponding rectangular frame patch.
Furthermore, the metal radiating oscillator is provided with two concave metal arms, and the shape is favorable for expanding the bandwidth of the antenna; the metal radiating oscillator feeds electricity at the center, and the tail ends of two metal arms of a current path form a 2.4G frequency band; the current path flows through the concave notch to form a 5G frequency band; the concave notch of the metal radiating oscillator is used as a short circuit branch to be in short circuit with the reflector on the upper surface of the third dielectric plate, so that the size of the antenna is reduced.
Furthermore, the 4 metal radiating oscillators are flat with the first dielectric substrate and are in central symmetry.
Furthermore, the invention also discloses a terminal which comprises the high-isolation high-gain large-scale MIMO antenna applied to the wireless local area network.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages: the antenna has a large number and good performance. The antenna comprises 13 antennas, namely 4 2.4G and 5G dual-frequency antennas, 4 5G omnidirectional antennas, 4 omnidirectional antennas and 1 Bluetooth antenna. The horizontal omnidirectional antenna and the directional antenna are combined, and the eight-diagram-shaped layout of the eight-direction alternative arrangement is adopted, so that the short-distance and long-distance directional patterns can be fully covered. The metal radiating oscillator is vertically polarized, the Bluetooth antenna and the 5G antenna are horizontally polarized, and meanwhile, the horizontally polarized antenna and the vertically polarized antenna are alternately arranged, so that the combination of different polarized antennas is beneficial to improving the isolation of the antennas. The antenna size can be 235mm by 10.5mm, achieving a low profile. The antenna has good performance and is suitable for being applied to AP equipment on a ceiling or on a wall.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
fig. 1 is a perspective view of a high isolation high gain massive MIMO antenna for a wireless local area network;
FIG. 2 is a top view of a high isolation high gain massive MIMO antenna for WLAN and a position diagram of each antenna;
FIG. 3 is a front view of the relative positions of a first dielectric substrate, a second dielectric substrate and a third dielectric substrate;
FIG. 4 is a schematic structural diagram of an upper surface of a first dielectric substrate;
FIG. 5 is a schematic view of a bottom surface of a first dielectric substrate;
fig. 6 is a schematic structural diagram of a 5G omnidirectional antenna on a second dielectric substrate;
FIG. 7 is a schematic structural diagram of an upper surface of a second dielectric substrate;
FIG. 8 is a schematic view of the structure of the lower surface of the second dielectric substrate;
FIG. 9 is a schematic structural view of an upper surface of a third dielectric substrate;
fig. 10 is a schematic perspective view of a metal radiating oscillator;
fig. 11 is a top view of a structure of a metallic radiating element;
fig. 12 is a structural front view of a metal radiating vibrator;
fig. 13 is a diagram showing simulation results of reflection coefficients of ANT1, ANT2, ANT3 and ANT 4;
fig. 14 is a diagram showing isolation simulation results of ANT1, ANT2, ANT3 and ANT 4;
FIG. 15 is a graph showing the results of a simulation of the reflection coefficients of 5G-1,5G-2,5G-3,5G-4,5G-5,5G-6,5G-7, 5G-8;
FIG. 16 is a graph showing the results of isolation simulation for 5G-1,5G-2,5G-3,5G-4,5G-5,5G-6,5G-7, 5G-8;
FIG. 17 is a diagram of the isolation simulation results of 4 dual-band antennas ANT1, ANT2, ANT3, ANT4 and 8 5G single-band antennas 5G-1,5G-2,5G-3,5G-4,5G-5,5G-6,5G-7 and 5G-8 in the 5150 and 5850MHz frequency bands;
FIG. 18 is a graph of reflection coefficient simulation results for a Bluetooth (BT) antenna;
fig. 19 is a diagram of the isolation simulation results of Bluetooth (BT) antenna and 4-branch dual-band antennas ANT1, ANT2, ANT3, ANT4 in 2400-2500MHz band;
fig. 20 is gain simulation gain data, 3D pattern and 2D roundness data for ANT1 antenna at theta 60 °;
fig. 21 is gain simulation gain data for a 5G1 antenna, 3D pattern and 2D data for phi 0 ° & phi 90 °;
fig. 22 is 5G5, gain simulation gain data for the antenna, 3D pattern and 2D roundness data for theta 60 °;
fig. 23 is gain simulation gain data, 3D pattern and 2D roundness data for a Bluetooth (BT) antenna at theta 60 °;
in the figure, 1,5G directional antennas, 2,5G omnidirectional antennas, 3, double-frequency metal radiation oscillator, 4, bluetooth antenna, 5, "T" shaped slot, 6, third medium substrate, 7, first medium substrate, 8, second medium substrate, 9, "concave" font metal patch, 10, windlass type patch, 11, windmill type patch, 12, non-closed annular patch, 13, circular patch, 14, non-concentric annular patch, 15, triangular fan blade, 16, cross microstrip line, 17, metal via hole, 18, "concave" font metal radiation arm, 19, short-circuit arm, 20, reflector.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
As shown in one of fig. 1 to 12, the present invention discloses a high-isolation high-gain massive MIMO antenna applied to a wireless local area network, which comprises a first dielectric plate 7, a second dielectric plate 8 and a third dielectric plate 6,
the center of the first dielectric plate 7 is provided with a circular through hole 71, the gap sleeve of the second dielectric plate 8 is arranged in the circular through hole 71, the center of the upper surface of the second dielectric plate 8 is provided with a circular patch 13, the gap sleeve of the periphery of the circular patch 13 is provided with a non-closed annular patch 12, the lower surface of the second dielectric plate 8 is provided with a non-concentric annular patch 14, the circle center of the non-concentric annular patch 14 is staggered relative to the circle center of the circular patch 13, the non-closed annular patch 12 is in short circuit with the non-concentric annular patch 14 of the lower surface through a metal via hole 17, a Bluetooth antenna 4 is further formed, and the antenna.
The upper surface and the lower surface of the first medium plate 7 are respectively and correspondingly printed with an upper radiation oscillator and a lower radiation oscillator, the upper radiation oscillator comprises 4 pairs of concave metal patch pairs 9 and 4 upper windmill type patches 10, the 4 pairs of concave metal patch pairs 9 and 4 upper windmill type patches 10 are arranged around the concentric circumference of the circular through hole 71 at intervals in a staggered manner, the 4 upper windmill type patches 10 are arranged in central symmetry and are distributed on the same relative inner circumference, the 4 pairs of concave metal patch pairs 9 are arranged in central symmetry and are distributed on the same relative outer circumference,
the lower radiation oscillator comprises 4 lower windmill type patches 11 which are overlapped with 4 upper windmill type patches 10 on the upper surface of the first medium plate 7, the blades of the upper windmill type patches 10 and the lower windmill type patches 11 are arranged in a mirror image manner, the upper windmill type patches 10 and the lower windmill type patches 11 at the same position form a windmill-shaped metal patch 2,
the third dielectric plate 6 is coaxially arranged below the second dielectric plate 8, a reflector 20 is printed on the upper surface of the third dielectric plate 6, and the reflector 20 is provided with T-shaped grooves 5 corresponding to four sides of the third dielectric plate 6; the 4 metal radiation oscillators 3 are arranged at four corners of the upper surface of the reflector 20 in a central symmetry manner, and the short circuit arms of the metal radiation oscillators 3 are in short circuit with the reflector 20 on the third dielectric plate 6.
Further, the shape of the first dielectric plate 7 is a regular octagon, the shape of the second dielectric plate 8 is a circle, the shape of the third dielectric plate 6 is a square, and the material of the first dielectric plate 7, the second dielectric plate 8 and the third dielectric plate 6 is FR 4.
Furthermore, each pair of concave metal patches 9 comprises two concave metal patches which are mirror images of each other, and a dipole antenna is formed by the pair of concave metal patches to form the 5G directional antenna 1 under the action of the reflector 20, so that high gain is achieved. The length of the "concave" radiating patch 9 corresponds to the wavelength of 1/4.
Furthermore, the upper windmill type patch 10 and the lower windmill type patch 11 both comprise a cross microstrip line 16, one end of each cross microstrip line 16 is provided with a triangular fan blade 15, and currents on the four pairs of triangular fan blades 15 form a closed loop, so that the closed loop forms a 5G omnidirectional antenna 2 with omnidirectional radiation, and high gain is achieved under the action of the reflector 20.
The upper windmill type patch 10 and the lower windmill type patch 11 cooperate to form omnidirectional radiation.
Furthermore, 4 pairs of concave metal patches 9 and 4 windmill-shaped metal patches 2 are arranged in a crossed manner, are distributed in eight directions of the eight diagrams uniformly in a centrosymmetric manner, and are in central symmetry, so that the arrangement not only improves the isolation degree between the eight diagrams, but also enables the directional diagram to cover all directions, namely, a short distance and a long distance.
Further, an arc through hole 23 is formed between two adjacent windmill-shaped metal patches 2, rectangular through holes 24 are respectively formed in the peripheries of two ends of the arc through hole 23 corresponding to two sides of the concave-shaped metal patch pair 9, one end of each rectangular through hole 24 is communicated with the arc through hole 23, and the other end of each rectangular through hole 24 is arranged at intervals with the corresponding edge of the first dielectric plate 7.
Furthermore, the reflector 20 patch is in a rectangular frame shape, and each T-shaped slot 5 on the third dielectric plate 6 corresponds to the center of the side edge of the rectangular frame patch; the four T-shaped grooves 5 have the same size, and the four T-shaped grooves 5 increase the isolation between the 4 metal radiating oscillators 3.
Further, the transverse edge of each T-shaped slot 5 is parallel to the side edge of the corresponding rectangular frame patch, and the vertical edge of each T-shaped slot 5 is perpendicular to the side edge of the corresponding rectangular frame patch.
Furthermore, the metal radiating oscillator 3 is provided with two concave metal arms 18, and the shape is favorable for expanding the bandwidth of the antenna; the metal radiating oscillator 3 feeds electricity at the center, and the tail ends of the two metal arms 18 of the current path form a 2.4G frequency band; the current path flows through the concave notch to form a 5G frequency band; the concave notch of the metal radiating oscillator 3 is used as a short circuit branch 19 to be in short circuit with the reflector 20 on the upper surface of the third dielectric plate 6, which is beneficial to reducing the size of the antenna.
Furthermore, 4 metal radiating oscillators 3 are flat with the first dielectric substrate and are in central symmetry.
Furthermore, the invention also discloses a terminal which comprises the high-isolation high-gain large-scale MIMO antenna applied to the wireless local area network.
Fig. 14 to 23 show simulation results of a high isolation and high gain massive MIMO antenna for a wireless lan, Freq indicates frequency, and "\" in the table indicates no requirement.
In the present embodiment, the antenna has dimensions of 235mm × 235mm × 10.5mm, which are lower than the conventional antenna in cross section. The 2400-2500MHz isolation of the antenna is at least 21dB and at most 30 dB; the isolation of 5150 and 5850MHz is minimum 25dB and maximum 45dB, which meets the requirement of high isolation. The minimum gain of 2400-; the minimum gain of 5150-5850MHz is 6dBi, the maximum gain is 9dB, and the requirement of high gain is met. As shown in table 1, the out-of-roundness of 13 antennas is less than 10dB when Theta is 60 ° (i.e., the difference between the maximum gain and the minimum gain is 60 °), which meets the roundness requirement.
Table 1-13 graphs of antenna gain data versus roundness data for Theta 60 deg
By adopting the technical scheme, compared with the prior art, the invention has the following advantages: the antenna has a large number and good performance. The antenna comprises 13 antennas, namely 4 2.4G and 5G dual-frequency antennas, 4 5G omnidirectional antennas, 4 omnidirectional antennas and 1 Bluetooth antenna. The horizontal omnidirectional antenna and the directional antenna are combined, and the eight-diagram-shaped layout of the eight-direction alternative arrangement is adopted, so that the short-distance and long-distance directional patterns can be fully covered. The metal radiating oscillator 3 is vertically polarized, the Bluetooth antenna and the 5G antenna are horizontally polarized, and meanwhile, the horizontally polarized antennas and the vertically polarized antennas are alternately arranged, so that the combination of different polarized antennas is beneficial to improving the isolation of the antennas. The antenna size can be 235mm by 10.5mm, achieving a low profile. The antenna has good performance and is suitable for being applied to AP equipment on a ceiling or on a wall.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. Thus, the detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
Claims (10)
1. A high-isolation high-gain large-scale MIMO antenna applied to a wireless local area network is characterized in that: which comprises a first dielectric plate, a second dielectric plate and a third dielectric plate,
a circular through hole is formed in the center of the first dielectric plate, the second dielectric plate is sleeved in the circular through hole in a clearance mode, a circular patch is arranged in the center of the upper surface of the second dielectric plate, a non-closed annular patch is sleeved on the periphery of the circular patch in a clearance mode, a non-concentric annular patch is arranged on the lower surface of the second dielectric plate, the circle center of the non-concentric annular patch is staggered relative to the circle center of the circular patch, and the non-closed annular patch is in short connection with the non-concentric annular patch on the lower surface through a metal through;
the upper surface and the lower surface of the first medium plate are respectively and correspondingly printed with an upper radiation oscillator and a lower radiation oscillator, the upper radiation oscillator comprises 4 pairs of concave metal paster pairs and 4 windlass type pasters, the 4 pairs of concave metal paster pairs and the 4 windlass type pasters are arranged around the concentric circumference of the circular through hole in a staggered and spaced mode, the 4 windlass type pasters are arranged in a central symmetry mode and are distributed on the same relative inner circumference, the 4 pairs of concave metal paster pairs are arranged in a central symmetry mode and are distributed on the same relative outer circumference,
the lower radiation oscillator comprises 4 lower windmill type patches which are overlapped with the 4 upper windmill type patches on the upper surface of the first medium plate, the blades of the upper windmill type patches and the lower windmill type patches are arranged in a mirror image manner, the upper windmill type patches and the lower windmill type patches at the same position form a windmill-shaped metal patch,
the third dielectric plate is coaxially arranged below the second dielectric plate, a reflector is printed on the upper surface of the third dielectric plate, and T-shaped grooves are formed in the four sides of the reflector relative to the third dielectric plate; the 4 metal radiation oscillators are arranged at four corners of the upper surface of the reflector in a central symmetry manner, and the short circuit arms of the metal radiation oscillators are in short circuit with the reflector on the third dielectric slab.
2. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: the first dielectric slab is in the shape of a regular octagon, the second dielectric slab is in the shape of a circle, the third dielectric slab is in the shape of a square, and the first dielectric slab, the second dielectric slab and the third dielectric slab are made of FR 4.
3. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: each pair of concave metal patches comprises two concave metal patches which are mirror images of each other, and the concave metal patches form directional radiation under the action of the reflector.
4. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: the upper windmill type patch and the lower windmill type patch both comprise cross microstrip lines, one end of each cross microstrip line is provided with a triangular fan blade, the current on the triangular fan blade is in a closed loop, and the upper windmill type patch and the lower windmill type patch are matched to form omnidirectional radiation.
5. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: an arc through hole is formed between every two adjacent windmill-shaped metal patches, rectangular through holes are formed in the two sides, corresponding to the concave metal patch pairs, of the peripheries of the two ends of the arc through holes respectively, one end of each rectangular through hole is communicated with the corresponding arc through hole, and the other end of each rectangular through hole is arranged at intervals with the corresponding edge of the first dielectric plate.
6. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: the reflector patch is in a rectangular frame shape, and each T-shaped groove on the third dielectric plate corresponds to the center of the side edge of the rectangular frame patch; the four T-shaped grooves have the same size, and the isolation among the 4 metal radiating oscillators is increased by the four T-shaped grooves.
7. The high isolation high gain massive MIMO antenna applied to WLAN according to claim 6 wherein: the transverse edge of each T-shaped groove is parallel to the side edge of the corresponding rectangular frame patch, and the vertical edge of each T-shaped groove is perpendicular to the side edge of the corresponding rectangular frame patch.
8. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: the metal radiating oscillator is provided with two concave metal arms, and the shape is favorable for expanding the bandwidth of the antenna; the metal radiating oscillator feeds electricity at the center, and the tail ends of two metal arms of a current path form a 2.4G frequency band; the current path flows through the concave notch to form a 5G frequency band; the concave notch of the metal radiating oscillator is used as a short circuit branch to be in short circuit with the reflector on the upper surface of the third dielectric plate, so that the size of the antenna is reduced.
9. The high isolation high gain massive MIMO antenna applied to wireless local area network according to claim 1, wherein: the 4 metal radiating oscillators are flat with the first medium substrate and are in central symmetry.
10. A terminal, characterized by: the terminal comprises a high-isolation high-gain massive MIMO antenna applied to the wireless local area network according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010626610.8A CN111600136A (en) | 2020-07-01 | 2020-07-01 | High-isolation high-gain large-scale MIMO antenna applied to wireless local area network |
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| CN202010626610.8A CN111600136A (en) | 2020-07-01 | 2020-07-01 | High-isolation high-gain large-scale MIMO antenna applied to wireless local area network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256601A (en) * | 2020-09-19 | 2022-03-29 | 华为技术有限公司 | Antenna, antenna module and electronic equipment |
| CN114976622A (en) * | 2022-07-05 | 2022-08-30 | 天津理工大学 | quasi-Taiji-shaped dual-frequency microstrip patch antenna loaded with eight-diagram-shaped parasitic patches |
-
2020
- 2020-07-01 CN CN202010626610.8A patent/CN111600136A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256601A (en) * | 2020-09-19 | 2022-03-29 | 华为技术有限公司 | Antenna, antenna module and electronic equipment |
| CN114976622A (en) * | 2022-07-05 | 2022-08-30 | 天津理工大学 | quasi-Taiji-shaped dual-frequency microstrip patch antenna loaded with eight-diagram-shaped parasitic patches |
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