CN111029761B - Broadband and high-gain double-unit microstrip antenna and manufacturing method thereof - Google Patents
Broadband and high-gain double-unit microstrip antenna and manufacturing method thereof Download PDFInfo
- Publication number
- CN111029761B CN111029761B CN201911289340.XA CN201911289340A CN111029761B CN 111029761 B CN111029761 B CN 111029761B CN 201911289340 A CN201911289340 A CN 201911289340A CN 111029761 B CN111029761 B CN 111029761B
- Authority
- CN
- China
- Prior art keywords
- microstrip antenna
- double
- dielectric substrate
- unit
- broadband
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
Abstract
The invention discloses a broadband high-gain double-unit microstrip antenna and a manufacturing method thereof, and belongs to the field of microstrip antennas. A broadband and high-gain double-unit microstrip antenna is characterized in that a double-unit rectangular microstrip antenna loaded with a U-shaped groove is arranged on the upper surface of a dielectric substrate, two antenna units are connected by a T-shaped power divider, and meanwhile, periodically arranged square patches and open resonance rings are arranged around the double-unit antenna, wherein three sides of each square patch surround the double-unit U-shaped groove microstrip antenna, and the open resonance rings are periodically arranged at the edges of two sides of the substrate; the lower surface of the dielectric substrate is provided with a metal grounding plate and a square patch, and the square patch surrounds three surfaces of the metal grounding plate and is consistent with and aligned with the square patch on the upper surface respectively in size. And the metal wire corresponding to the split resonant ring on the upper surface is arranged on the lower surface of the substrate, and forms a complementary structure with the split of the split resonant ring. The defects of poor directivity and narrow broadband of the microstrip antenna in the prior art are overcome.
Description
Technical Field
The invention belongs to the field of microstrip antennas, and relates to a broadband high-gain double-unit microstrip antenna and a manufacturing method thereof.
Background
In the communication industry, wireless communication is the most widely used communication mode, and an antenna plays a key role in the communication process as an important carrier in the wireless communication. With the rapid development of the internet of things industry, various internet of things devices increasingly require miniaturization, low weight, interference resistance and other performances, which provide more strict requirements for the design of antennas.
In the field of wireless communication, wireless communication in the 2.4GHz ISM band is open for industrial, scientific and medical institutions without licenses, which increases the demand for radio-frequency antennas in this band. The microstrip antenna has the obvious advantages of small volume, light weight, low profile, easy array expansion, simple manufacture and the like, so that the research enthusiasm of a plurality of experts and scholars is stimulated. However, the conventional microstrip antenna has disadvantages such as narrow bandwidth, low gain, poor directivity, etc., which make it subject to many limitations in the field of engineering application. Although the microstrip antenna can improve the directivity coefficient of the antenna in an array expansion mode, the radiation efficiency of the feed network after array expansion is reduced due to the loss of the feed line, the design of the feed network is very complex, the design and adjustment difficulty is high, and the difficulty of popularization in the engineering field is also improved accordingly.
Disclosure of Invention
The invention aims to overcome the defects of poor directivity and narrow broadband of a microstrip antenna in the prior art, and provides a broadband and high-gain double-unit microstrip antenna and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a broadband and high-gain double-unit microstrip antenna comprises a dielectric substrate, wherein copper layers are respectively arranged on the upper surface and the lower surface of the dielectric substrate;
the upper surface of the dielectric substrate is provided with a double-unit U-shaped groove microstrip antenna and a T-shaped power divider, the opening of the double-unit U-shaped groove microstrip antenna is arranged upwards, the centers of two U-shaped grooves of the double-unit U-shaped groove microstrip antenna are respectively connected with two signal feed-in lines of the T-shaped power divider, and the tail end of the T-shaped power divider extends to the lower end surface of the dielectric substrate;
the upper surface of the dielectric substrate is also provided with a plurality of square patches which are arranged into a U shape and surround the periphery of the double-unit U-shaped groove microstrip antenna, and the opening direction of the U shape formed by the square patches is opposite to the opening direction of the U-shaped groove in the double-unit U-shaped groove microstrip antenna;
the upper surface of the dielectric substrate is also provided with a plurality of open resonance rings, the open resonance rings are symmetrically arranged on the outer side of the U-shaped square patch, and the opening direction of the open resonance rings is the same as that of the U-shaped groove in the double-unit U-shaped groove microstrip antenna;
the lower surface of the dielectric substrate is provided with a plurality of metal wires, a plurality of square patches and a metal grounding plate, the square patches on the upper surface and the lower surface are arranged in a one-to-one correspondence manner, the metal grounding plate is positioned on the inner side of the square patches on the lower surface, and the metal grounding plate extends to the lower end face of the dielectric substrate; the metal wire on the lower surface is arranged corresponding to the opening resonance ring on the upper surface, and the width of the metal wire is the same as that of the opening resonance ring;
the feed position of the T-shaped power divider is connected with an SMA coaxial connector, and the other end of the SMA coaxial connector is connected with the metal grounding plate.
Furthermore, the split ring is rectangular frame-shaped, and a notch is arranged on the rectangular edge.
Further, the split ring resonator is a symmetrical pattern.
Further, the length of the metal wire is equal to the length of the split resonant ring.
Furthermore, the metal grounding plate is rectangular.
Furthermore, the square patch, the metal ground plate and the metal wire are all made of copper.
Further, the dielectric substrate is made of epoxy resin.
The invention relates to a manufacturing method of a broadband and high-gain double-unit microstrip antenna, which comprises the following steps:
1) coating copper on the upper and lower surfaces of the dielectric substrate;
2) etching a double-unit U-shaped groove microstrip patch antenna, a T-shaped power divider, a square patch and an opening resonance ring on the upper surface of a dielectric substrate;
etching a metal grounding plate, a square patch and a metal wire on the lower surface of the dielectric substrate;
3) the tail end of the T-shaped power divider is a high-frequency signal feed-in end, the high-frequency signal feed-in end is used as a feed position, an SMA coaxial connector is installed at the feed position, and the other end of the SMA coaxial connector is connected with the metal grounding plate.
Compared with the prior art, the invention has the following beneficial effects:
according to the broadband high-gain double-unit microstrip antenna, the gain of a single-unit antenna is improved through the structure of double units, and the feeder loss is not further increased due to no further array expansion; in order to increase the bandwidth of the microstrip antenna, a U-shaped groove is loaded on a microstrip patch, the flowing length of current on the patch is changed, and therefore a new resonance point is added to expand the impedance bandwidth, compared with a common rectangular unit antenna, the relative bandwidth is improved by 16.3%, meanwhile, square patches are arranged around the double-unit antenna, the square patches with symmetrical upper and lower surfaces of a substrate can be used as a filtering channel of lateral electromagnetic waves, the polarization mode of the lateral electromagnetic wave propagation is changed, the magnetic field vector of the electromagnetic waves is perpendicular to the substrate, and the electric field vector is parallel to the substrate; the negative magnetic permeability metamaterial formed by the open resonant rings and the metal wires is arranged on two sides of the substrate, so that the negative magnetic permeability is generated to inhibit lateral radiation, and the negative magnetic permeability metamaterial has very singular electromagnetic characteristics in a microwave frequency band, so that the negative magnetic permeability characteristic can be generated and the electromagnetic loss is small, the electromagnetic energy is more concentrated, and the half-power beam width of far-field radiation is reduced.
Furthermore, the dielectric substrate adopted by the microstrip antenna is epoxy resin (FR4), and compared with the low-loss dielectric substrate adopted to improve the gain of the microstrip antenna, the material price is much lower, and the microstrip antenna is very suitable for mass production and manufacturing.
The manufacturing method of the broadband high-gain double-unit microstrip antenna adopts the circuit board etching technology, can integrally etch the microstrip antenna, the band-pass filtering channel formed by the square patch and the negative magnetic conductivity metamaterial, and reduces the manufacturing cost.
Drawings
FIG. 1 is a schematic structural diagram of a broadband, high-gain dual-element microstrip antenna according to the present invention;
FIG. 2 is a front view of a dual-unit U-slot microstrip antenna of the present invention;
FIG. 3 is a rear view of a dual-unit U-slot microstrip antenna of the present invention;
FIG. 4 is a front view of a dual-unit U-slot microstrip antenna portion of the present invention;
FIG. 5 is a front view of a square patch of the present invention;
fig. 6 is a front view of the split ring and the metal line of the present invention, fig. 6(a) is a front view of the split ring, and fig. 6(b) is a front view of the metal line;
FIG. 7 is a schematic diagram of the H-plane gain comparison of a Negative Permeability Metamaterial (NPM) dual element microstrip antenna of the present invention with and without the NPM;
FIG. 8 is a schematic diagram of the H-plane Half Power Beam Width (HPBW) comparison of NPM and NPM dual element microstrip antennas of the present invention;
FIG. 9 is a schematic diagram comparing the E-plane Half Power Beam Width (HPBW) of NPM and NPM dual element microstrip antennas of the present invention;
FIG. 10 is a comparison of return loss for NPM and NPM-less dual element microstrip antennas of the present invention;
FIG. 11 is a schematic diagram comparing the H-plane radiation patterns of NPM-added and NPM-not-added dual-element microstrip antennas of the present invention;
fig. 12 is a schematic diagram comparing the E-plane radiation patterns of the NPM-added and NPM-not-added dual-element microstrip antennas of the present invention.
The antenna comprises a 1-double-unit U-shaped groove microstrip antenna, a 2-T-shaped power divider, a 3-square patch, a 4-open resonant ring, a 5-metal grounding plate and a 6-dielectric substrate.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a broadband high-gain double-unit microstrip antenna and a manufacturing method thereof in order to improve the performance of the antenna in the 2.4GHz ISM frequency band.
A broadband and high-gain double-unit microstrip antenna is characterized in that a double-unit rectangular microstrip antenna loaded with a U-shaped groove is arranged on the upper surface of a dielectric substrate, two antenna units are connected by a T-shaped power divider, and meanwhile, periodically arranged square patches and open resonance rings are arranged around the double-unit antenna, wherein three sides of each square patch surround the double-unit U-shaped groove microstrip antenna, and the open resonance rings are arranged at the edges of two sides of the dielectric substrate; the lower surface of the dielectric substrate is provided with a metal grounding plate and a square patch, and the square patch surrounds three sides of the metal grounding plate and is consistent with and aligned with the square patch on the upper surface respectively in size. And the lower surface of the medium substrate is provided with a metal wire corresponding to the opening resonance ring on the upper surface, the length of the metal wire is consistent with the length of the opening periodic resonance ring, the width of the metal wire is consistent with the size of the opening resonance ring, and the metal wire and the opening of the opening resonance ring form a complementary structure.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the broadband high-gain dual-unit microstrip antenna of the present invention includes a dual-unit U-shaped slot microstrip antenna 1, a T-shaped power divider 2, a square patch 3, an open resonator ring 4, a metal ground plate 5 and a dielectric substrate 6; the upper and lower surfaces of the dielectric substrate 6 are all provided with copper layers, the upper surface of the dielectric substrate 6 is provided with a double-unit U-shaped groove microstrip antenna 1, a T-shaped power divider 2, a square patch 3 and an opening resonance ring 4, and the specific position relation is as follows: the double-unit U-shaped groove microstrip antenna 1 is arranged on the upper surface of the dielectric substrate 6, and the opening of the double-unit U-shaped groove microstrip antenna is arranged upwards; the T-shaped power divider 2 is arranged at the lower side of the double-unit U-shaped groove microstrip antenna 1, two signal feed-in lines of the T-shaped power divider 2 are respectively connected with the center of a U-shaped groove of the double-unit U-shaped groove microstrip antenna 1, and a vertical rod of the T-shaped power divider 2 extends to the lower end face of the dielectric substrate 6; the periphery of the double-unit U-shaped groove microstrip antenna 1 is provided with a plurality of square patches 3, the square patches 3 are arranged in a groove shape, a horizontal row of the groove is positioned on the upper side of a U-shaped groove of the double-unit U-shaped groove microstrip antenna 1, a vertical row of the groove is positioned on the left side and the right side of the double-unit U-shaped groove microstrip antenna 1, an opening resonant ring 4 is arranged on the outer side of the vertical row of the groove, and an opening of the opening resonant ring 4 is arranged upwards;
with reference to fig. 1 and 3, the lower surface of the dielectric substrate 6 is provided with a metal ground plate 5, a plurality of square patches 3 and a plurality of metal wires, the position relationship is as follows, the square patches 3 on the lower surface are arranged in a one-to-one correspondence with the upper surface, the metal ground plate 5 is arranged on the inner side of each square patch 3, the bottom of each metal ground plate 5 is flush with the bottom of the dielectric substrate 6, the length of each metal wire is equal to that of the corresponding open resonant ring 4, the width of each metal wire is equal to the width of the opening of the corresponding open resonant ring 4, and the orthographic projection of each metal wire on the upper surface is located in the corresponding open resonant ring 4 and is filled in the corresponding opening.
The metal grounding plate 5, the square patches 3, the open resonant ring 4 and the metal wire are all made of copper, the square patches 3 on the upper surface and the lower surface of the dielectric substrate 5 form a band-pass filtering channel, the polarization mode of lateral electromagnetic waves can be effectively changed, so that the direction of a fringe magnetic field is perpendicular to the substrate, and the fringe magnetic field is matched with a negative magnetic permeability metamaterial (NPM) to generate a negative magnetic permeability phenomenon and inhibit lateral radiation, thereby improving the radiation directivity, reducing the half-power beam width and improving the radiation gain. The open resonant rings 4 and the metal wires on the upper surface and the lower surface of the dielectric substrate 5 form the metamaterial with negative magnetic permeability, the open resonant rings adopt square open resonant rings, the symmetric square patches can excite the resonant effect more easily, and the electromagnetic wave of the lateral radiation passing through the band-pass filtering channel can excite the phenomenon of negative magnetic permeability, so that the lateral radiation effect is inhibited.
The dielectric substrate is made of epoxy resin (FR4), is low in price and suitable for large-scale production, and completely meets the requirement of the 2.4GHz ISM frequency band. The double-unit antenna on the dielectric substrate, the square patch, the split resonant ring and the like are printed integrally by adopting a circuit board, so that the manufacturing is simple, and the cost is lower.
The invention also discloses a manufacturing method of the broadband high-gain double-unit microstrip antenna, which comprises the following steps:
s1, coating copper on the upper surface and the lower surface of the dielectric substrate 6;
s2, etching the double-unit U-shaped groove microstrip patch antenna 1, the T-shaped power divider 2, the periodically arranged square patches 3 and the periodically arranged open resonant ring array on the upper surface of the dielectric substrate 6;
s3, etching a rectangular metal grounding plate 5 and periodically arranged square patches 3 on the lower surface of the dielectric substrate 6, wherein the square patches on the lower surface have the same size and are in one-to-one correspondence with the square patches on the upper surface. Etching metal wires which are complementary to the upper surface opening resonance ring on two sides of the lower surface, wherein the length of the metal wires is equal to the side length of the opening resonance ring, and the width of the metal wires is equal to the size of the opening;
and S4, taking the tail end of the T-shaped power divider 2 as a high-frequency signal feed-in end, installing a standard 50-ohm SMA coaxial connector at the feed-in end, and connecting the other end of the SMA coaxial connector with the metal grounding plate. Specifically, the tail end of the T-shaped power divider 2 is used as an interface for installing a standard 50-ohm SMA coaxial connector, the anode of the SMA coaxial connector is connected with the tail end microstrip line 2, and the cathode of the SMA coaxial connector is connected with the metal grounding plate.
The principles of the present invention are explained in detail below:
the metamaterial is a very important scientific research result proposed in the society, is an artificial microstructure material, can generate corresponding response to an external electromagnetic field by designing different structural units, can obtain dielectric constant and magnetic permeability with any size in principle, and is evaluated as one of ten technological breakthroughs in the year 2003 by the American Science journal. The design concept of the metamaterial breaks through the inherent understanding of people on the traditional material, especially brings a brand new idea for the microwave radio frequency field, and greatly expands the design range of the microstrip antenna. When the artificial microstructure is used for a radio frequency antenna, the performance of the microstrip antenna can be improved through careful design, such as improving radiation directivity, reducing half-power beam width, reducing radar scattering cross section (RCS) and the like. The dielectric constant and the magnetic permeability of most materials in nature are positive values, and when electromagnetic waves pass through the materials, the electric field vector, the magnetic field vector and the wave vector of the electromagnetic waves meet the right-hand spiral law. However, when the electromagnetic wave passes through the metamaterial with negative dielectric constant and magnetic permeability, the left-handed helix phenomenon is conformed.
The negative magnetic conductivity metamaterial is characterized in that a square opening resonant ring is etched on the upper surface of a dielectric substrate, a metal wire complementary with the upper surface is etched on the lower surface of the dielectric substrate, when electromagnetic waves parallelly penetrate through the opening resonant ring, the direction of a magnetic field of a wave vector is perpendicular to the opening resonant ring, the direction of an electric field of the wave vector is parallel to an opening of the opening resonant ring, the left-hand metamaterial generates electromagnetic resonance to generate a negative magnetic conductivity phenomenon, and due to the excellent characteristics of the negative magnetic conductivity metamaterial, loss is low when the negative magnetic conductivity phenomenon occurs, more energy is concentrated to radiate upwards, so that the directivity and gain of an antenna are improved.
For the improvement of the frequency band of the microstrip antenna, the U-shaped groove is etched on the rectangular patch, the flowing direction of high-frequency current of the rectangular patch is changed, a plurality of resonance points are generated, broadband response can be achieved through reasonable adjustment, and compared with the mode that the bandwidth is improved through a parasitic patch, the size and the weight of the antenna are greatly reduced. And the distance between the antenna and the negative magnetic permeability metamaterial is reasonably designed, so that the negative magnetic permeability metamaterial has small influence on the return loss of the antenna. Therefore, the antenna, the negative magnetic permeability metamaterial and the band-pass filtering channel can be designed respectively and then integrated comprehensively, and the design period and the design difficulty are greatly reduced.
The rectangular double-unit antenna loaded with the U-shaped groove has the working frequency of 2.4GHz and the relative impedance bandwidth of 18.3%, the bandwidth is increased by 16.3% compared with that of a common rectangular double-unit antenna, the forward gain can reach 8.2dB, and the gain is increased by 2.2dB compared with that of a double-unit rectangular antenna without the negative magnetic permeability metamaterial. And after the negative magnetic permeability metamaterial is distributed around the substrate, the half-power beam width of the H surface of the metamaterial is reduced by 20.8 degrees.
Examples
Referring to fig. 2-6, fig. 2-6 are schematic structural diagrams of the component in the present invention, respectively, and referring to fig. 2 and 3, the dielectric substrate is an epoxy resin (FR4) substrate with a thickness of 5mm, a length Ls of 291.7mm, and a width Ws of 134 mm; referring to fig. 3 and 5, the side length of the square patch and the distance between the two patches are 30mm Ln and 32mm L5, respectively; referring to fig. 6(a), the side length of the split ring resonator, the distance between the split ring resonator and the two ring resonators are Ln 1-16 mm, g-3 mm, and L4-18 mm, respectively; referring to fig. 6(b), the width g of the metal wire is 3mm, and the length Ln1 is 16 mm; referring to fig. 3, the length of the metal ground plate is L1-191.7 mm, and the width of the metal ground plate is W1-84 mm; referring to fig. 2, the T-shaped power divider is bilaterally symmetrical, and the distance between two feed points is L3-104 mm, wherein L0-32.4 mm, and W0-2.3 mm; the specific dimensions of the double-unit U-shaped groove are shown in fig. 4, where Fy is 1.9mm, C is 20.4mm, H is 2.3mm, D is 28mm, E is 1.6mm, Wp is 53.7mm, and Lp is 27.6 mm.
The corresponding test performance of the examples is as follows:
referring to fig. 7, it can be seen from the H-plane radiation gain diagram of the dual-element microstrip antenna that the gain of the dual-element microstrip antenna of the present invention reaches 8.2dB at the operating frequency of 2.4GHz, which is 2.2dB higher than that of the dual-element microstrip antenna without the negative permeability material.
Referring to fig. 8 and 9, normalized gain plots on the H-plane and E-plane are shown, respectively, and it can be seen that the half-power beam width of the dual-element microstrip antenna with the negative permeability metamaterial added on the H-plane is 28.3 °, which is 20.8 ° smaller than that of the microstrip array antenna without the element. The half-power beam width of the double-unit microstrip antenna with the negative magnetic permeability metamaterial unit added on the E-plane diagram is 93.8 degrees, and is slightly increased compared with the double-unit microstrip antenna without the unit.
Fig. 10 is a return loss comparison graph of a dual-element microstrip antenna, and it can be seen from the graph that, compared with a common rectangular microstrip antenna, the bandwidth of the dual-element microstrip antenna loaded with a U-shaped slot is expanded, and after a material with a negative magnetic permeability is loaded on the basis, the bandwidth is slightly increased, the final relative bandwidth is 18.3%, and compared with a common rectangular microstrip antenna, the bandwidth is increased by 16.3%.
Referring to fig. 11 and 12, the comparison of the radiation patterns of the H-plane and E-plane of the microstrip array antenna with and without the negative permeability material element in polar coordinate form is shown, and it can be seen from these two figures that the array antenna with the negative permeability metamaterial element has higher gain and better directivity.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A broadband high-gain double-unit microstrip antenna is characterized by comprising a dielectric substrate (6), wherein copper layers are respectively arranged on the upper surface and the lower surface of the dielectric substrate (6);
the upper surface of the dielectric substrate (6) is provided with a double-unit U-shaped groove microstrip antenna (1) and a T-shaped power divider (2), the opening of the double-unit U-shaped groove microstrip antenna (1) is arranged upwards, the centers of two U-shaped grooves of the double-unit U-shaped groove microstrip antenna are respectively connected with two signal feed-in lines of the T-shaped power divider (2), and the tail end of the T-shaped power divider (2) extends to the lower end face of the dielectric substrate (6);
the upper surface of the dielectric substrate (6) is also provided with a plurality of square patches (3), the square patches (3) are arranged into a U shape and surround the periphery of the double-unit U-shaped groove microstrip antenna (1), and the opening direction of the U shape formed by the arrangement of the square patches (3) is opposite to the opening direction of the U-shaped groove in the double-unit U-shaped groove microstrip antenna (1);
the upper surface of the dielectric substrate (6) is also provided with a plurality of open-ended resonance rings (4), the open-ended resonance rings (4) are symmetrically arranged on the outer side of the U-shaped square patch (3), and the opening direction of the open-ended resonance rings (4) is the same as that of the U-shaped groove in the double-unit U-shaped groove microstrip antenna (1);
the lower surface of the dielectric substrate (6) is provided with a plurality of metal wires, a plurality of square patches (3) and metal grounding plates (5), the square patches (3) on the upper surface and the lower surface are arranged in a one-to-one correspondence manner, the metal grounding plates (5) are positioned on the inner sides of the square patches (3) on the lower surface, and the metal grounding plates (5) extend to the lower end face of the dielectric substrate (6); the metal wire on the lower surface is arranged corresponding to the opening resonance ring (4) on the upper surface, and the width of the metal wire is the same as that of the opening resonance ring;
the power feed position of the T-shaped power divider (2) is connected with an SMA coaxial connector, and the other end of the SMA coaxial connector is connected with a metal grounding plate (5).
2. The broadband, high gain, dual-element microstrip antenna according to claim 1 wherein said split ring (4) is rectangular frame shaped with a notch on the rectangular edge.
3. The broadband, high gain, dual-element microstrip antenna according to claim 2 wherein said split resonant ring (4) is a symmetrical pattern.
4. The broadband, high gain, dual-element microstrip antenna according to claim 2 wherein the length of said metal line is equal to the length of the open resonator loop (4).
5. The broadband, high gain, dual-element microstrip antenna according to claim 1 wherein said metallic ground plane (5) is rectangular in shape.
6. The broadband, high gain, dual-element microstrip antenna according to claim 1 wherein the square patch (3), the metal ground plane (5) and the metal wire are all made of copper.
7. The broadband, high gain, dual-element microstrip antenna according to claim 1 wherein the dielectric substrate (6) is made of epoxy.
8. A method of manufacturing a broadband, high gain, dual element microstrip antenna according to any of claims 1 to 7 comprising the steps of:
1) copper is coated on the upper surface and the lower surface of the dielectric substrate (6);
2) etching a double-unit U-shaped groove microstrip patch antenna (1), a T-shaped power divider (2), a square patch (3) and an open resonant ring (4) on the upper surface of a dielectric substrate (6);
etching a metal grounding plate (5), a square patch (3) and a metal wire on the lower surface of the dielectric substrate (6);
3) the tail end of the T-shaped power divider (2) is a high-frequency signal feed-in end, the high-frequency signal feed-in end is used as a feed position, an SMA coaxial joint is arranged at the feed position, and the other end of the SMA coaxial joint is connected with a metal grounding plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289340.XA CN111029761B (en) | 2019-12-13 | 2019-12-13 | Broadband and high-gain double-unit microstrip antenna and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289340.XA CN111029761B (en) | 2019-12-13 | 2019-12-13 | Broadband and high-gain double-unit microstrip antenna and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111029761A CN111029761A (en) | 2020-04-17 |
| CN111029761B true CN111029761B (en) | 2021-10-01 |
Family
ID=70209069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911289340.XA Active CN111029761B (en) | 2019-12-13 | 2019-12-13 | Broadband and high-gain double-unit microstrip antenna and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111029761B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366456A (en) * | 2020-11-02 | 2021-02-12 | 合肥学院 | 5G communication is with ultra wide band antenna based on artifical electromagnetism metamaterial |
| CN113258298B (en) * | 2021-06-01 | 2021-09-21 | 光谷技术有限公司 | Antenna structure and gateway equipment |
| CN116799516B (en) * | 2023-07-10 | 2024-04-12 | 安徽大学 | Array antenna based on low RCS super surface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1941502A (en) * | 2005-09-30 | 2007-04-04 | 西北工业大学 | Microband antenna containing resonance ring in S-band and its array |
| CN106876982A (en) * | 2017-02-22 | 2017-06-20 | 西安电子科技大学 | Improve the super surface of multiaerial system performance and the multiaerial system using super surface |
| CN107134637A (en) * | 2017-04-21 | 2017-09-05 | 华东交通大学 | A kind of double frequency EBG structures and the microstrip antenna based on double frequency EBG structures |
| CN110112552A (en) * | 2019-05-09 | 2019-08-09 | 长安大学 | A kind of X-band negative magnetic-inductive capacity material wideband microstrip antenna and preparation method thereof |
| CN110534901A (en) * | 2019-09-17 | 2019-12-03 | 长安大学 | Double unit microstrip antennas of a kind of high-isolation high-gain and preparation method thereof |
-
2019
- 2019-12-13 CN CN201911289340.XA patent/CN111029761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1941502A (en) * | 2005-09-30 | 2007-04-04 | 西北工业大学 | Microband antenna containing resonance ring in S-band and its array |
| CN106876982A (en) * | 2017-02-22 | 2017-06-20 | 西安电子科技大学 | Improve the super surface of multiaerial system performance and the multiaerial system using super surface |
| CN107134637A (en) * | 2017-04-21 | 2017-09-05 | 华东交通大学 | A kind of double frequency EBG structures and the microstrip antenna based on double frequency EBG structures |
| CN110112552A (en) * | 2019-05-09 | 2019-08-09 | 长安大学 | A kind of X-band negative magnetic-inductive capacity material wideband microstrip antenna and preparation method thereof |
| CN110534901A (en) * | 2019-09-17 | 2019-12-03 | 长安大学 | Double unit microstrip antennas of a kind of high-isolation high-gain and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| "Design and Simulation of a Wideband GPR Antenna with FSS-MA S hielding";Chenzhi lin.etc;《2019 International Symposium on Antennas and Propagation》;20191030;全文 * |
| "SRR loaded slot antenna for multiband applications";Princy Maria Paul.etc;《2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting》;20171019;全文 * |
| "一种新型C 波段宽带圆极化贴片天线的设计";高尧，韦高;《现代电子技术》;20110901;第34卷(第17期);全文 * |
| "基于开口谐振环的K 波段超材料";周精浩，董焱章;《湖北汽车工业学院学报》;20190930;第33卷(第3期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111029761A (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111029761B (en) | Broadband and high-gain double-unit microstrip antenna and manufacturing method thereof | |
| KR20030080217A (en) | Miniature broadband ring-like microstrip patch antenna | |
| CN110581368A (en) | Hydrological monitoring radar flat microstrip array antenna and design method thereof | |
| JP4364439B2 (en) | antenna | |
| CN108736153B (en) | Three-frequency low-profile patch antenna | |
| CN210443662U (en) | Novel K-band high-gain metamaterial microstrip antenna | |
| Baharom et al. | Dual-element of high-SHF PIFA MIMO antenna for future 5G wireless communication devices | |
| CN101540435A (en) | S waveband arborization left-handed material microstrip antenna | |
| CN109786959B (en) | Millimeter wave antenna | |
| CN109802225B (en) | Microstrip filter antenna | |
| CN101626110A (en) | Novel C-band microstrip antenna with negative permeability material | |
| Reddy et al. | Enhancement of CPW-fed inverted L-shaped UWB antenna performance characteristics using partial substrate removal technique | |
| CN101707284B (en) | LTCC electrically small integrated antenna for radio-frequency front-end system | |
| Parikh et al. | Effects of slots on resonant frequencies of a microstrip patch antenna | |
| CN115241647A (en) | Miniaturized dual-frequency omnidirectional antenna and microstrip antenna modeling method | |
| Meng et al. | Bandwidth extension of a printed square monopole antenna loaded with periodic parallel-plate lines | |
| CN108777358B (en) | Hemispherical broadband electrically small antenna based on near field coupling principle | |
| Errifi et al. | Enhancement of Inset Feed Microstrip Semicircular Patch Antenna Directivity using Dielectric Superstrate | |
| Cao et al. | W-band high-gain low profile circularly polarized magneto-electric dipole antenna array with gap waveguide feeding technology | |
| Liu et al. | Patch microstrip antenna with improving radiation performance for 2.4-GHz WLAN access point | |
| Surender et al. | A low-profile single band dielectric resonator antenna for radio frequency energy harvesting | |
| Lu et al. | Design of high gain planar dipole array antenna for WLAN application | |
| Ma et al. | A printed magneto-electric dipole based on substrate integrated gap waveguide | |
| Karkare et al. | Design of a Rectangular Microstrip Antenna with Artificial Magnetic Conductor Ground Plane | |
| Kamal et al. | A Printed Crossed-Dipole mmWave Antenna with Efficient Omnidirectional Circular Polarization for Wireless Surveillance in IOT Applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |