CN113823900B - Novel multiband high-gain hexagonal slotting microstrip patch antenna - Google Patents
Novel multiband high-gain hexagonal slotting microstrip patch antenna Download PDFInfo
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- CN113823900B CN113823900B CN202111115785.3A CN202111115785A CN113823900B CN 113823900 B CN113823900 B CN 113823900B CN 202111115785 A CN202111115785 A CN 202111115785A CN 113823900 B CN113823900 B CN 113823900B
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- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 241000276425 Xiphophorus maculatus Species 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 abstract 2
- 238000004891 communication Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
Abstract
The present invention relates to the field of multiband, high gain antennas. The utility model provides a novel multiband high gain hexagon fluting microstrip patch antenna, including the dielectric substrate 1 of the dielectric constant of flat platy that prepares is 2.2, be in the radiating element 2 of regular hexagon metal sheet of dielectric substrate 1 upper surface, be in the metal butt joint board 3 of dielectric substrate 1 lower surface, coaxial feed probe 4, the fluting of the fretwork of six 120 degrees angles is had at the edge of radiating element 2, 120 degrees angles of every fluting correspond an interior angle of radiating element 2 and 120 degrees both sides of angle are parallel with the both sides of the interior angle of radiating element 2 that corresponds respectively, adjacent two fluting contactless, the outer core connection dielectric substrate 1 of coaxial feed probe 4 and metal butt joint board 3, the radiating element 2 is connected to the inner core of coaxial feed probe 4.
Description
Technical Field
The present invention relates to the field of multiband high gain antennas.
Background
The rapid development of contemporary wireless communication systems, particularly the substantial increase in communication rate, has also increased the requirements for antenna performance. Microstrip antennas are commonly used in various occasions of modern communications due to their low profile, low cost, ease of conformal with carriers, ease of integration, and the like. Conventional microstrip patch antennas have limited their widespread use due to low gain, single frequency band. Therefore, increasing the gain and the number of the spread frequency points of the antenna has become a hot point of research, and the research of microstrip patch antennas is continuously innovated and developed, and several technologies have been proposed at present to increase the gain and the number of the spread frequency points, thereby improving the antenna performance.
In order to realize the multi-frequency operation of the microstrip antenna, the most direct method is to place a plurality of radiation patches with different resonant frequencies on the same dielectric substrate, and the design has simple structure but increases the size of the antenna; the multi-frequency antenna can also be designed in a mode of overlapping radiation patches or loading parasitic patches to form a laminated structure. An antenna with parasitic disc loading as proposed by Zhijun Zhang, yue Li et al realizes a Dual band circularly polarized rotating patch antenna of 2.2GHz-2.3GHz,2.6GHz-2.7GHz, and Dual bands (Deng C, li Y, zhang Z, et al, dual-band circularly polarized rotated patch antenna with a parasitic circular patch loading J IEEE Antennas and Wireless Propagation Letters,2013, 12 (2): 492-495), but this increases the thickness and volume of the microstrip antenna, which makes it difficult to meet the requirements of low profile and miniaturization of the antenna in today's communication systems.
The dual-frequency operation can be realized by designing a proper feed network and simultaneously exciting a fundamental mode and a higher order mode of the microstrip patch antenna. A controlled polarization CP patch antenna over dual bands as proposed by Jin-Dong Zhang, lei Zhu et al, achieves dual bands of 2.5GHz-3GHz,4GHz-4.5GHz, (Zhang J D, zhu L, liu N W, et al CP patch antenna with controllable polarisation over dual-frequency bands J IET Microwaves Antennas & production 2017, 11 (2): 224-231) but in this way adds complexity to the design and fabrication.
For improvement of antenna gain, antenna array is an effective method. Such as: a1 x4 array microstrip patch antenna proposed by Yang J Q et al can work in 2.3GHz and 2.6GHz frequency bands simultaneously. Microstrip array antennas have ideal radiation gain in both operating bands, a maximum gain of 6.17 dB at low frequency band 2.3GHz and 7.48 dB at high frequency band 2.6GHz (Yang J Q, cao L H, zhou C, et al Design of miniaturized dual-band microstrip array antenna J Journal of Hubei University (Natural Science), 2021, 43 (1): 96-101.), but the feed network design of the antenna array is complex and the antenna size is not well controlled.
Although some technologies have been proposed to improve the gain of the microstrip antenna and realize the multi-frequency operation of the antenna, the problems of high design difficulty, complex structure, high requirements on manufacturing and processing and the like of the antenna are still pure.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the novel hexagonal multiband high-gain microstrip patch antenna is provided, and the performance of the antenna is improved and improved by slotting a hexagonal radiation patch.
The technical scheme adopted by the invention is as follows: the utility model provides a novel multiband high gain hexagon fluting microstrip patch antenna, dielectric substrate (1) that dielectric constant is 2.2 including the platy of preparation, be in radiating element (2) of regular hexagon metal sheet of dielectric substrate (1) upper surface, be in metal base plate (3) of dielectric substrate (1) lower surface, coaxial feed probe (4), the fluting of fretwork of six 120 degrees angles is had at the edge of radiating element (2), 120 degrees angles of every fluting correspond radiating element (2) one interior angle and 120 degrees both sides of angle are parallel rather than the both sides of the interior angle of corresponding radiating element (2) respectively, adjacent two fluting contactless, the outer core connection dielectric substrate (1) of coaxial feed probe (4) and metal base plate (3), radiating element (2) are connected to the inner core of coaxial feed probe (4).
The position of the coaxial feed probe (4) is at a 7.5mm offset from the center of the radiating element (2) along the line from the center to the midpoint of one side of the radiating element (2).
The side length of the regular hexagon of the radiation unit (2) is 30mm, the connecting line of the inner vertexes of the grooves of six 120-degree angles forms a regular hexagon with the side length of 26mm, the connecting line of the outer vertexes of the grooves of six 120-degree angles forms a regular hexagon with the side length of 28mm, and the interval distance between the grooves of two adjacent 120-degree angles is 3mm.
The radius of the inner core of the coaxial feed probe (4) is 0.43mm, and the radius of the outer core of the coaxial feed probe (4) is 0.98mm.
The dielectric substrate (1) is made of polytetrafluoroethylene glass fiber reinforced material, the thickness is 3mm, the radiating unit (2) is made of copper, and the metal base plate (3) is made of copper.
The beneficial effects of the invention are as follows: the invention realizes the improvement of gain and the increase of frequency band by carrying out slotting treatment on the traditional microstrip patch antenna, greatly simplifies the complex structure of the multiband antenna, and has the advantages of simple preparation and the like. The working wave band of the antenna is L wave band 2.0GHz (1.98 GHZ-2.03 GHZ), C wave band 5.30GHZ (5.19-5.37 GHZ), 6.92GHz (6.76 GHz-7.09 GHz), and gains are all the same6dbi with a larger gain, VSWR +.>2. The invention has reasonable structure, effectively solves the technical problems of low gain, single frequency band and the like of the traditional microstrip antenna, and is suitable for wireless communication in a WiFi frequency band.
Drawings
FIG. 1 is a schematic view of a layer structure of an embodiment;
FIG. 2 is a schematic overall structure of the embodiment;
FIG. 3 is a schematic representation of the reflectance of an embodiment;
FIG. 4 is an embodiment antenna gain diagram;
the antenna comprises a dielectric substrate 1, a dielectric substrate 2, a radiation unit 3, a metal base plate 4, a coaxial feed probe 5 and a slot.
Detailed Description
First, a square dielectric substrate having a side length of 80mm was prepared using a polytetrafluoroethylene glass fiber reinforced material (Rogers RT 5880) having a dielectric constant of 2.2 and a thickness of 3mm, and the shape of the dielectric substrate may be a circle having a radius of 80mm or a regular hexagon having a side length of 80mm as an example.
Secondly, plating a layer of copper mold with the thickness smaller than 1mm on the upper surface of the medium substrate, wherein the copper mold is a regular hexagon with the side length of 30mm (in order to facilitate the increase of the frequency number in L and C wave bands, the side length of 30mm is arranged), the center of the medium substrate is aligned with the center of the radiating unit, then, a corrosion or cutting method is adopted to form six hollowed-out grooves with 120-degree angles on the regular hexagon copper mold, the radiating unit is formed, each groove with 120-degree angle corresponds to one inner angle of the radiating unit, two sides of the 120-degree angle are respectively parallel to two sides of the inner angle of the corresponding radiating unit, two adjacent grooves are in non-contact, the side length of the regular hexagon of the radiating unit is 30mm, the inner vertex connecting lines of the grooves with the six 120-degree angles form a regular hexagon with the side length of 26mm, the outer vertex connecting lines of the grooves with the six 120-degree angles form a regular hexagon with the side length of 28mm, and the interval between every two adjacent grooves with the 120-degree angles is 3mm. The width of the slot is about 1.7mm and the distance of the slot from the side of the radiating patch (regular hexagon with radius of 30 mm) is about 1.7mm.
The invention utilizes the shape of the radiation unit, the size and symmetry of the slot, influences the current path of the surface of the patch, the current is mainly concentrated around the slot, the loaded slot changes the current path, and the multi-frequency point, the structure size and the reduction of the radiation unit are realized.
And plating a layer of copper on the lower surface of the dielectric substrate.
Finally, a coaxial feed probe is installed, the outer core of the coaxial feed probe is connected with the dielectric substrate and the metal base plate, the inner core of the coaxial feed probe is connected with the radiating unit, the coaxial feed probe is perpendicular to the center of the substrate and the radiating unit, in order to ensure the optimal feed effect and the optimal gain effect, the position of the coaxial feed probe is located at the position of 7.5mm offset from the center of the radiating unit along a connecting line from the center to the midpoint of one side of the radiating unit, as shown in the figure 2, a and b correspond to two dielectric substrates with different shapes, and the position of the coaxial feed probe is located at the position of 7.5mm offset from the center of the radiating unit to the position right above.
The matching impedance of the coaxial line is related to the radius of the inner core and the outer core and is unrelated to the length. In order to realize the transmission matching of the antenna 50 ohms and realize good transmission characteristics, 5 is a coaxial inner core, the radius of which is 0.43mm,6 is a coaxial outer core, the radius of which is 0.98mm, and the medium between the inner radius and the outer radius is air. As shown in fig. 3, the curve represents the reflection coefficient of the novel hexagonal multiband, high-gain microstrip patch antenna. It can be seen from the figure that the antenna is not a single frequency band of a conventional antenna, and can operate at L-band 2.0GHz (1.98 GHZ-2.03 GHZ), C-band 5.30GHZ (5.19-5.37 GHZ), and 6.92GHz (6.76 GHz-7.09 GHz).
As shown in fig. 4, the graph is a 3D gain graph of each frequency point of the antenna operation, it can be obtained from graph a that, at 2.03GH, the strongest gain of the antenna is 7.47bdi, it can be obtained from graph b that, at 5.30GHz, the strongest gain of the antenna is 6.0bdi, it can be obtained from graph c that, at 6.92GHz, the strongest gain of the antenna is 8.21dbi, and it can be obtained from graphs a, b, c that the radiation directions in 3 frequency bands are all in the positive axis direction of the reference coordinate system (the positive axis direction of the Y axis of the reference coordinate system) and have a certain improvement compared with the gains of 2-dbi of the conventional microstrip patch antenna.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. A novel multiband high-gain hexagonal slotting microstrip patch antenna is characterized in that: the method comprises a prepared flat dielectric substrate (1) with a dielectric constant of 2.2, radiating units (2) of a regular hexagon metal plate positioned on the upper surface of the dielectric substrate (1), a metal base plate (3) positioned on the lower surface of the dielectric substrate (1) and coaxial feed probes (4), wherein six hollowed grooves with 120-degree angles are formed in the edges of the radiating units (2), each grooved 120-degree angle corresponds to one inner angle of the radiating unit (2), two sides of the 120-degree angle are respectively parallel to two sides of the corresponding inner angle of the radiating unit (2), two adjacent grooves are not contacted, the outer cores of the coaxial feed probes (4) are connected with the dielectric substrate (1) and the metal base plate (3), and the inner cores of the coaxial feed probes (4) are connected with the radiating unit (2).
2. The novel multiband high-gain hexagonal-shaped slotted microstrip patch antenna of claim 1, wherein: the position of the coaxial feed probe (4) is at a 7.5mm offset from the center of the radiating element (2) along the line from the center to the midpoint of one side of the radiating element (2).
3. The novel multiband high-gain hexagonal-shaped slotted microstrip patch antenna of claim 2, wherein: the side length of the regular hexagon of the radiation unit (2) is 30mm, the connecting line of the inner vertexes of the grooves of six 120-degree angles forms a regular hexagon with the side length of 26mm, the connecting line of the outer vertexes of the grooves of six 120-degree angles forms a regular hexagon with the side length of 28mm, and the interval distance between the grooves of two adjacent 120-degree angles is 3mm.
4. A novel multiband high-gain hexagonal slotted microstrip patch antenna according to claim 3, wherein: the radius of the inner core of the coaxial feed probe (4) is 0.43mm, and the radius of the outer core of the coaxial feed probe (4) is 0.98mm.
5. The novel multiband high-gain hexagonal-shaped slotted microstrip patch antenna of claim 1, wherein: the dielectric substrate (1) is made of polytetrafluoroethylene glass fiber reinforced material, the thickness is 3mm, the radiating unit (2) is made of copper, and the metal base plate (3) is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111115785.3A CN113823900B (en) | 2021-09-23 | 2021-09-23 | Novel multiband high-gain hexagonal slotting microstrip patch antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111115785.3A CN113823900B (en) | 2021-09-23 | 2021-09-23 | Novel multiband high-gain hexagonal slotting microstrip patch antenna |
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| CN113823900A CN113823900A (en) | 2021-12-21 |
| CN113823900B true CN113823900B (en) | 2023-11-28 |
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Family Cites Families (2)
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2021
- 2021-09-23 CN CN202111115785.3A patent/CN113823900B/en active Active
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| CN108336492A (en) * | 2018-04-03 | 2018-07-27 | 南京信息工程大学 | A kind of small-sized Big Dipper B1 band microstrip center-fed antenna |
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