CN115117612B - Broadband millimeter wave magneto-electric dipole antenna based on SIW feed - Google Patents
Broadband millimeter wave magneto-electric dipole antenna based on SIW feed Download PDFInfo
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- CN115117612B CN115117612B CN202210655060.1A CN202210655060A CN115117612B CN 115117612 B CN115117612 B CN 115117612B CN 202210655060 A CN202210655060 A CN 202210655060A CN 115117612 B CN115117612 B CN 115117612B
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a broadband millimeter wave magneto dipole antenna based on SIW feed, which comprises a substrate integrated waveguide SIW, wherein a PP plate and an upper dielectric substrate are sequentially arranged above the substrate integrated waveguide SIW, and the upper surface of the upper dielectric substrate is provided with two split-ring resonators and an H-shaped metal patch for loading the split-ring resonators; the substrate integrated waveguide SIW comprises an upper layer metal plate, a lower dielectric substrate and a grounding plate which are sequentially arranged from top to bottom, wherein an hourglass-shaped gap is formed in the upper layer metal plate; two metal blind holes are formed in the upper metal plate and are respectively connected with the H-shaped metal patch and the upper metal plate structure. The impedance bandwidth of the invention at-10 dB is 38.5%, which is higher than the bandwidth of the same type of antenna. The gain of the invention is larger than 5.5dBi in the frequency band range, the maximum gain is about 7.5dBi, and the gain is stable. The invention can realize wideband millimeter wave by only using one layer of SIW structure and H-shaped metal patch, and has very important significance for 5G mobile communication.
Description
Technical Field
The invention relates to the field of antennas, in particular to a broadband millimeter wave magneto-electric dipole antenna based on SIW feed.
Background
The 5G mobile communication has two frequency bands of Sub-6GHz and millimeter wave, but with the increase of end users, the frequency spectrum bandwidth of Sub-6GHz becomes very crowded, the frequency spectrum resources are seriously deficient, and the frequency spectrum resources of millimeter wave frequency band are abundant, so that the problems can be effectively solved, and the broadband technology has important significance for fully exerting the abundant frequency spectrum resources of millimeter wave.
The design of the millimeter wave magnetic dipole antenna with the SIW rectangular slot coupling feed electromagnetic dipole is characterized in that the SIW rectangular slot coupling feed electromagnetic dipole is adopted in the design of the millimeter wave magnetic dipole antenna, the whole size of the antenna is smaller, and the research and application of the broadband millimeter wave antenna with the SIW slot coupling feed is provided in the design of the SIW butterfly slot coupling feed arched magnetic dipole antenna, the loss of the SIW butterfly slot coupling feed arched magnetic dipole antenna in the millimeter wave frequency band is low, the SIW butterfly slot coupling feed electromagnetic dipole antenna is easy to integrate, and the bandwidth is about 30%. In summary, the bandwidth of the existing SIW fed magnetic electric dipole antenna still has the possibility of further widening.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a broadband millimeter wave magneto-electric dipole antenna based on SIW feed, which has wider antenna bandwidth.
In order to achieve the aim of the invention, the invention adopts the following technical scheme: the integrated waveguide comprises a substrate integrated waveguide SIW, wherein a PP plate and an upper medium substrate are sequentially arranged above the substrate integrated waveguide SIW, two split resonance rings and an H-shaped metal patch loading the split resonance rings are arranged on the upper surface of the upper medium substrate, and the two split resonance rings are arranged in an upper groove and a lower groove outside the H-shaped metal patch; the substrate integrated waveguide SIW comprises an upper layer metal plate, a lower dielectric substrate and a grounding plate which are sequentially arranged from top to bottom, an hourglass-shaped gap is formed in the upper layer metal plate, two metal blind holes are formed in the upper dielectric substrate and are respectively connected with an H-shaped metal patch and an upper layer metal patch, and the two metal blind holes are respectively connected between two sides of the hourglass-shaped gap.
Further, the lower dielectric substrate of the substrate integrated waveguide SIW is provided with a plurality of metal through holes formed by metal holes, and the metal through holes, the upper metal plate and the grounding plate form a SIW structure.
Further, the H-shaped metal patch is provided with an H-shaped hollowed-out portion, and the H-shaped hollowed-out portion is provided with four stepped portions on one side close to the vertical symmetry axis.
Further, the split-ring resonators are double split-ring resonators, each split-ring resonator comprises an outer split-ring resonator connected with the H-shaped metal patch and an inner split-ring resonator arranged opposite to the outer split-ring resonator.
Further, chamfer angles are arranged at four corners of the outer part of the H-shaped metal patch, the length of the chamfer angles is 0.8mm, and the width of the chamfer angles is 0.35mm.
Further, the H-shaped hollowed-out part is provided with a step part at one side close to the vertical symmetry axis, the step part comprises three steps which are sequentially connected, the vertical height difference of each step is 0.2mm, 0.45mm and 0.4mm, and the transverse width difference of each step is 0.5mm, 0.3mm and 0.2mm.
Further, the outer split resonant ring comprises a first transverse section connected with the H-shaped metal patch, two ends of the first transverse section are respectively provided with a first bending part, a second bending part and a third bending part which are sequentially connected and are bent inwards, the bending angle of each bending part is 90 degrees, the tail end of the third bending part faces the inner split resonant ring, and the outer split resonant ring is in a concave shape. The lengths of the first transverse section, the first bending part, the second bending part and the third bending part are respectively 1.0mm, 0.7mm, 0.45mm and 0.4mm, and the width of the external split resonant ring is 0.08mm. The H-shaped metal patch is connected with the middle part of the first transverse section.
Further, the inner split resonant ring is C-shaped, and the C-shaped opening of the inner split resonant ring faces the tail ends of the two third bending parts; the width of the inner split resonant ring is 0.08mm; the inner split resonant ring comprises a second transverse section, the two ends of the second transverse section are respectively provided with an inward fourth bending part, and the bending angle of the fourth bending part is 90 degrees; the second transverse section and the fourth fold have lengths of 0.64mm and 0.17mm, respectively.
Further, a connecting part connected with the H-shaped metal patch is arranged on the second transverse section, and the width of the connecting part is equal to that of the inner opening resonant ring; the length of the connection portion is 0.25mm.
Further, the upper dielectric substrate (1) and the lower dielectric substrate are PCB boards, and the grounding plate and the upper metal plate are copper-clad plates.
Further, when the upper dielectric substrate and the lower dielectric substrate are mounted, the geometric centers of the hourglass-shaped gap and the H-shaped metal patch are overlapped in a top view.
The beneficial effects of the invention are as follows: the structure of the H-shaped metal patch is beneficial to the impedance matching of the antenna. The bandwidth of the magneto-electric dipole antenna in the millimeter wave frequency band is effectively widened. The structure of the split resonant ring is beneficial to widening the bandwidth of the antenna. The advantage of rich millimeter wave spectrum resources can be fully exerted. The bandwidth of the antenna-10 dB impedance of the invention is 38.5%, which is higher than that of the same type of antenna. The gain of the invention is larger than 5.5dBi in the frequency band range, the maximum gain is about 7.5dBi, and the gain is more stable in the working frequency band range. The E-plane and H-plane cross polarization of the antenna at the positions of 24GHz and 30GHz of the resonant frequency point is low, and the radiation characteristic of the antenna is good. The invention realizes broadband millimeter wave by only using a layer of SIW structure and the H-shaped metal patch which is mirror symmetrical and loads the split-ring resonator, and has very important significance for 5G mobile communication. The invention is composed of only two layers of dielectric substrates, and the circuit process is simple to process and is suitable for mass processing; the invention has low processing cost and is very suitable for the integrated design and mass production of microwave and millimeter wave circuits.
Drawings
FIG. 1 is a schematic diagram of the overall outline structure of the present invention;
FIG. 2 is a schematic diagram of the outline structure of the present invention with the upper dielectric substrate removed;
FIG. 3 is a top view of a lower dielectric substrate according to the present invention;
FIG. 4 is a top view of an upper dielectric substrate of the present invention;
FIG. 5 is a schematic view of a split ring resonator according to the present invention;
FIG. 6 is a diagram of S11 parameter simulation results in an embodiment of the present invention;
FIG. 7 is a diagram of the results of a Gain (IEEE) parameter simulation in accordance with an embodiment of the present invention;
fig. 8 is a radiation pattern of an antenna with a resonance frequency of 24GHz according to an embodiment of the present invention;
fig. 9 is a radiation pattern of an antenna with a resonance frequency of 30GHz according to an embodiment of the present invention.
The main component symbols in the drawings are described as follows:
1. an upper dielectric substrate; 2. h-shaped metal patches; 3. an hourglass-shaped slit; 4. an upper metal plate; 5. a lower dielectric substrate; 6. a metal blind hole; 7. a PP plate; 8. a split ring resonator; 9. a ground plate;
81. an outer split ring resonator; 811. a first transverse section; 812. a first bending part; 813. a second bending part; 814. a third bending part;
82. an internally split resonant ring; 821. a second transverse section; 822. and a fourth bending part.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
The broadband millimeter wave magneto dipole antenna based on SIW feed comprises a substrate integrated waveguide SIW, wherein a PP plate 7 and an upper dielectric substrate 1 are sequentially arranged above the substrate integrated waveguide SIW, and two split-resonance rings 8 and an H-shaped metal patch 2 for loading the split-resonance rings 8 are arranged on the upper surface of the upper dielectric substrate 1; the two parts are arranged in the upper and lower grooves outside the H-shaped metal patch 2, and the split resonant ring 8 and the H-shaped metal patch are positioned on the same plane. The length and width of the upper dielectric substrate 1, the upper metal plate 4 and the lower dielectric substrate 5 are equal, and the length and width are 7.38mm and 5.85mm respectively. The H-shaped metal patch 2 has a length of 3.87mm, a width of 3.42mm, and an outer upper and lower groove of 1.17mm and a depth of 0.81mm.
In this embodiment, the outer four corners of the H-shaped metal patch 2 are provided with chamfers, the length of which is 0.8mm and the width of which is 0.35mm.
In this embodiment, the substrate integrated waveguide SIW includes an upper metal plate 4, a lower dielectric substrate 5, and a ground plate 9 sequentially disposed from top to bottom, an hourglass-shaped slot 3 is disposed on the upper metal plate 4, a height direction of the hourglass-shaped slot 3 is parallel to a length direction of the upper metal plate 4, two metal blind holes 6 are disposed on the upper dielectric substrate 1, and the two metal blind holes 6 are respectively connected with the metal patch 2 and the upper metal plate 4; two metal blind holes 6 are connected between the waists of the two sides of the hourglass-shaped gap 3. Of these, the radius of the blind metal holes 6 is preferably 0.14mm, and the distance between the two blind metal holes 6 is 1.35mm. Of these, the width of the hourglass-shaped slit 3 is preferably 1.35mm, the height is 3.42mm, the vertical height of the upper and lower bases is 0.59mm, and the hourglass opening is 0.63mm. The distance between the metallized blind hole 4 and the hourglass shaped slot 3 has a significant impact on the matching of the antenna.
In this embodiment, the lower dielectric substrate 5 of the substrate integrated waveguide SIW is provided with a plurality of metal holes, and the plurality of metal holes, the upper metal plate 4 and the ground plate 9 form a SIW structure. The space between the centers of the metal through holes is 0.8mm, the metal hole arrays are preferably arranged at 24 positions and are symmetrically distributed in a U shape, two rows of the metal through holes 10 are transversely distributed, and the radius of the metal holes is 0.25mm at the position of the right vertical distribution 6.
In this embodiment, the H-shaped metal patch 2 is provided with an H-shaped hollowed portion, and the H-shaped hollowed portion is provided with four stepped portions on one side close to the vertical symmetry axis.
In this embodiment, the split ring 8 is a double split ring, and each split ring 8 includes an outer split ring connected to the H-shaped metal patch 2, and an inner split ring disposed opposite to the outer split ring.
In this embodiment, the H shape fretwork portion is provided with four ladder portions in the one side that is close to vertical symmetry axle, and four ladder portions are for the vertical and horizontal symmetry axle symmetry of H shape fretwork portion set up the ladder portion including three ladder that connect gradually, and the vertical difference in height of every ladder is 0.2mm, 0.45mm, 0.4mm respectively, and the horizontal width difference of every ladder is 0.5mm, 0.3mm, 0.2mm respectively.
In this embodiment, the outer split ring resonator 81 includes a first transverse section 811 connected to the H-shaped metal patch 2, two ends of the first transverse section 811 are respectively provided with a first bending portion 812, a second bending portion 813 and a third bending portion 814 that are sequentially connected and bent inwards, a bending angle of each bending portion is 90 °, an end of the third bending portion 814 faces the inner split ring resonator 82, and the outer split ring resonator 81 is concave. The lengths of the first lateral section 811, the first bent portion 812, the second bent portion 813, and the third bent portion 814 are 1.0mm, 0.7mm, 0.45mm, and 0.4mm, respectively, and the width of the externally-opened resonance ring 81 is 0.08mm. An H-shaped metal patch 2 is connected to the middle of the first lateral section 811.
In this embodiment, the inner split ring 82 has a "C" shape, the "C" shaped opening of the inner split ring 82 faces the ends of the two third bending portions 814, and the inner side angle of the inner split ring 82 is 90 °. The width of the internally vented resonator ring 82 is 0.08mm. The inner split resonant ring 82 includes a second transverse segment 821, and both ends of the second transverse segment 821 are respectively provided with an inward fourth bending portion 822, and the bending angle of the fourth bending portion 822 is 90 °. The second lateral segment 811 and the fourth fold 822 have lengths of 0.64mm and 0.17mm, respectively.
In the present embodiment, the second transverse segment 821 is provided with a connection portion with the H-shaped metal patch 2, the width of the connection portion being equal to the width of the internally split resonant ring. The length of the connection portion is 0.25mm.
In this embodiment, the upper dielectric substrate 1 and the lower dielectric substrate 5 are PCB boards, and the ground plate 9 and the upper metal plate 4 are copper-clad plates.
When the upper dielectric substrate 1 and the lower dielectric substrate 5 are mounted, the geometric centers of the hourglass-shaped gap 3 and the H-shaped metal patch 2 are overlapped in a top view.
In this embodiment, the feed end is located at the front end of the substrate integrated waveguide SIW, and is coupled to the upper metal plate 4 through the hourglass-shaped slot 3 near the short-circuited end, and the hourglass-shaped slot 3 and the H-shaped metal patch 2 loaded with the split-ring resonator 8 have an important influence on the matching of the antenna.
In the present embodiment, the broadband millimeter wave magneto dipole antenna based on SIW feeding models simulation experimental data in electromagnetic simulation software CST, as shown in fig. 6 to 9:
fig. 6 is a simulation result of the S11 parameter in this embodiment, and it can be seen from the figure that the-10 dB impedance bandwidth of the antenna is 38.5% higher than that of the same type of antenna.
Fig. 7 is a graph of the Gain (IEEE) parameter simulation results of the antenna according to this embodiment, and it can be seen from the graph that the Gain of the antenna is greater than 5.5dBi in the frequency band range, the maximum Gain is about 7.5dBi, and the Gain is relatively stable in the operating frequency band range.
Fig. 8 and 9 are antenna radiation patterns of the antenna of the present embodiment at the resonance frequency points 24GHz and 30GHz, respectively, and it can be seen from the figures that the cross polarization of the E plane and the H plane in the embodiment is low, and the radiation characteristic of the antenna is good.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, the foregoing examples and the accompanying drawings are only to be considered as examples for the purpose of aiding in the understanding of the method and core concept of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Those of ordinary skill in the art will recognize that the embodiments described herein are for the purpose of aiding the reader in understanding the principles of the present invention and should be understood that the scope of the invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.
Claims (10)
1. The broadband millimeter wave magneto dipole antenna based on SIW feed is characterized by comprising a substrate integrated waveguide SIW, wherein a PP plate (7) and an upper dielectric substrate (1) are sequentially arranged above the substrate integrated waveguide SIW, two split resonance rings (8) and an H-shaped metal patch (2) for loading the split resonance rings (8) are arranged on the upper surface of the upper dielectric substrate (1), and the two split resonance rings (8) are arranged in upper and lower grooves outside the H-shaped metal patch (2);
the substrate integrated waveguide SIW comprises an upper layer metal plate (4), a lower dielectric substrate (5) and a grounding plate (9) which are sequentially arranged from top to bottom, wherein an hourglass-shaped gap (3) is formed in the upper layer metal plate (4); two metal blind holes (6) are formed in the upper medium substrate (1), the two metal blind holes (6) are respectively connected with the H-shaped metal patch (2) and the upper metal plate (4), and the two metal blind holes (6) are respectively connected between the two sides of the hourglass-shaped gap (3).
2. The SIW-feed-based broadband millimeter wave magneto-electric dipole antenna according to claim 1, wherein the lower dielectric substrate (5) of the substrate integrated waveguide SIW is provided with a plurality of metal through holes.
3. The broadband millimeter wave magneto-electric dipole antenna based on SIW feeding according to claim 1, wherein the H-shaped metal patch (2) is provided with an H-shaped hollowed-out part, and the H-shaped hollowed-out part is provided with four stepped parts at one side close to a vertical symmetry axis.
4. A wideband millimeter wave magneto-electric dipole antenna based on SIW feeding according to claim 3, wherein said step portion comprises three steps connected in sequence, each of said steps having a vertical height difference of 0.2mm, 0.45mm, 0.4mm, and a lateral width difference of 0.5mm, 0.3mm, 0.2mm, respectively.
5. The broadband millimeter wave magneto-electric dipole antenna based on SIW feeding according to claim 1, wherein the outer four corners of the H-shaped metal patch (2) are provided with chamfers, and the chamfers are 0.8mm in length and 0.35mm in width.
6. A wideband millimeter wave magneto-electric dipole antenna based on SIW feeding according to claim 1, characterized in that said split ring (8) is a double split ring, each of said split rings (8) comprising an outer split ring (81) connected to an H-shaped metal patch (2), and an inner split ring (82) arranged opposite to the outer split ring (81).
7. The wideband millimeter wave magneto-electric dipole antenna based on SIW feeding according to claim 6, wherein the outer split resonant ring (81) comprises a first transverse section (811) connected with the H-shaped metal patch (2), two ends of the first transverse section (811) are respectively provided with a first bending part (812), a second bending part (813) and a third bending part (814) which are sequentially connected and are bent inwards, the bending angle of each bending part is 90 degrees, the tail end of the third bending part (814) faces the inner split resonant ring (82), and the outer split resonant ring (81) is in a concave shape; the lengths of the first transverse section (811), the first bending part (812), the second bending part (813) and the third bending part (814) are respectively 1.0mm, 0.7mm, 0.45mm and 0.4mm, and the width of the external opening resonance ring (81) is 0.08mm; the H-shaped metal patch (2) is connected to the middle of the first transverse section (811).
8. The SIW feed-based broadband millimeter wave magneto-electric dipole antenna according to claim 7, wherein said inner split ring resonator (82) has a "C" shape, said "C" shaped opening of said inner split ring resonator (82) being directed toward the ends of said third folded portions (814); the inner split resonant ring (82) comprises a second transverse section (821), four inward bending parts (822) are respectively arranged at two ends of the second transverse section (821), and the bending angle of each fourth bending part (822) is 90 degrees; the second transverse segment (821) and the fourth fold (822) have lengths of 0.64mm and 0.17mm, respectively, and the inner split ring resonator (82) has a width of 0.08mm.
9. The SIW feed-based broadband millimeter wave magneto-electric dipole antenna according to claim 8, characterized in that said second transversal section (821) is provided with a connection portion connected to said H-shaped metal patch (2), said connection portion having a width equal to the width of said inner split resonant ring (82); the length of the connecting part is 0.25mm.
10. The broadband millimeter wave magneto-electric dipole antenna based on SIW feeding according to claim 1, wherein the upper dielectric substrate (1) and the lower dielectric substrate (5) are PCB boards, and the grounding plate (9) and the upper metal plate (4) are copper-clad plates.
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| CN110380218B (en) * | 2019-05-17 | 2020-12-25 | 东南大学 | Circular polarization plane substrate integrated magnetoelectric dipole antenna and array thereof |
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| CN114284736A (en) * | 2021-12-31 | 2022-04-05 | 厦门大学 | Millimeter-wave wide-band high-gain dual-polarization magnetoelectric dipole filter antenna |
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