CN108682943B - Miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands - Google Patents
Miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands Download PDFInfo
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- CN108682943B CN108682943B CN201810619049.3A CN201810619049A CN108682943B CN 108682943 B CN108682943 B CN 108682943B CN 201810619049 A CN201810619049 A CN 201810619049A CN 108682943 B CN108682943 B CN 108682943B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
Abstract
The invention discloses a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands, which comprises a medium coating and a metal radiating surface which are assembled from bottom to top; the metal radiation surface comprises a Y-shaped plane monopole and a feed coplanar waveguide which are installed in a coplanar mode, a trident feeder line and a strip tuning arm which are connected to the Y-shaped plane monopole, a folding metal frame connected to a feed coplanar waveguide ground plane, and radiation gaps loaded on the Y-shaped plane monopole and the feed coplanar waveguide respectively. The antenna can meet the application requirement of a terminal which is required to face 5G commercial and is compatible with a 5G frequency band and the existing working frequency band, and has the advantages of small size, convenience in processing, easiness in conformal installation, stable radiation performance in a wide frequency band and the like.
Description
Technical Field
The invention belongs to the technical field of electromagnetic antennas, and particularly relates to a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands.
Background
At present, the commercialization of 5G is imminent, and the research and development thereof are rapidly promoted due to the rapid development of the mobile internet service and the wireless internet of things service. In particular, the METIS (mobile and wireless enablement for the 2020information facility) project initiated by the european union in 2012 made a series of provisions for the 5G research direction. Compared with 4G and 5G communication, the flow density, the transmission rate and the number of the connected terminal devices are greatly improved; meanwhile, the time delay of 5G end-to-end communication is reduced to one fifth of the original time delay, and the service time of a low-energy-consumption battery of the terminal is prolonged by 10 times. After the 5G communication is widely used, the intercommunication and interconnection between people and objects become possible, so that excellent user experience can be brought.
Since the existing available frequency band is congested, and considering a large number of users that will exist after the 5G mobile communication business and the internet of things are developed, research of many researchers is focused on research on terminal devices of the millimeter wave frequency band and antenna parts of the base station. However, in the transition stage from the business stage of 5G communication to the full development and maturity of millimeter wave communication, the good transition and compatibility between 5G mobile communication and the existing mobile communication, including 4G, WiFi, WiMAX, etc., is a very important issue, so it is very important to design a broadband antenna and array that can be compatible with both the 5G frequency band and the existing common communication frequency band (WiFi/WiMAX).
Disclosure of Invention
The invention aims to solve the problems, provides a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands, which is a miniaturized monopole antenna compatible with 5G middle frequency bands and WiFi/WiMax frequency bands and capable of working at 2.4-3.5GHz, can meet the application requirements of a terminal which is necessary for 5G commercial and compatible with 5G frequency bands and the existing working frequency bands, and has the characteristics of small size, convenience in processing, easiness in conformal installation, stable radiation performance in a wide frequency band and the like.
In order to solve the technical problems, the technical scheme of the invention is as follows: a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands comprises a dielectric coating and a metal radiating surface which are assembled from bottom to top; the metal radiation surface comprises a Y-shaped plane monopole and a feed coplanar waveguide which are installed in a coplanar mode, a trident feeder line and a strip tuning arm which are connected to the Y-shaped plane monopole, a folding metal frame connected to a feed coplanar waveguide ground plane, and radiation gaps loaded on the Y-shaped plane monopole and the feed coplanar waveguide respectively.
Preferably, the dielectric thickness of the dielectric coating layer is 1.0-1.6 mm, and the dielectric constant of the dielectric material is 4.0-4.5.
Preferably, the longitudinal dimension of the metal radiating surface is 28 mm to 32 mm, and the transverse dimension is 19 mm to 21 mm.
Preferably, the longitudinal dimension of the Y-type planar monopole is 12 mm to 13 mm, and the transverse dimension of the Y-type planar monopole is 15 mm to 20 mm.
Preferably, the longitudinal dimension of the feeding coplanar waveguide is 3 mm to 5 mm, and the transverse dimension is 5 mm to 7 mm.
Preferably, the minimum bending length of the folded metal frame is 4 mm to 6 mm, the rest bending lengths are subjected to equal difference gradual change, and the difference value is 0.4 mm to 0.6 mm.
Preferably, the lateral dimension of the tridentate feeder is 3 mm to 5 mm, and the line width is 0.8 mm to 1.2 mm.
Preferably, the transverse dimension of the strip-shaped tuning arm is 8 mm to 10 mm, the longitudinal dimension of the strip-shaped tuning arm is 2 mm to 4 mm, and the width of the strip-shaped tuning arm is 0.8 mm to 1.2 mm.
Preferably, the slot width of the radiation slot is 0.4 mm to 0.6 mm.
Preferably, the transverse and longitudinal radiation gap lengths loaded on the right side of the Y-type planar monopole are in an equal difference distribution, the minimum transverse gap length is 17 mm to 18 mm, the difference is 1.8 mm to 2.2 mm, the minimum longitudinal gap length is 7 mm, and the difference is 1.2 mm to 1.4 mm.
The miniaturized antenna compatible with the 5G and Wi-Fi/WiMax frequency bands provided by the invention has the following beneficial effects:
1. the antenna can meet the requirements of being compatible with a 5G middle frequency band and a WiFi/WiMAX frequency band on the frequency band, and can meet the commercial requirements of the upcoming 5G communication;
2. the antenna is smaller than the common size of the patch antenna with the same frequency in size, and is easy to form a miniaturized array or carry out common-mode design with a terminal and a front end;
3. the antenna can improve and optimize relevant parameters according to actual needs, and further can be respectively suitable for a base station and a terminal to use: if the antenna faces the base station, the antenna medium, the antenna material and the like can be changed so as to adapt to the huge transmitting power of the base station antenna; when the antenna faces the terminal, the antenna can be further miniaturized, the radiation efficiency of the antenna is improved, and the isolation of the antenna is further improved;
4. in general, the miniaturized antenna compatible with the 5G and Wi-Fi/WiMax frequency bands provided by the invention has the characteristics of small size, convenience in processing, easiness in conformal installation, stable radiation performance in a wide frequency band and the like, has very strong practicability, and is worthy of popularization in the industry.
Drawings
FIG. 1 is a schematic structural diagram of a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands;
FIG. 2 is a schematic view of a metal radiating surface of a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands;
FIG. 3 is a schematic diagram of a miniaturized antenna compatible with 5G and Wi-Fi/WiMax bands according to the present invention;
FIG. 4 is a return loss diagram of a miniaturized antenna compatible with 5G and Wi-Fi/WiMax bands according to the present invention;
FIG. 5 shows the radiation patterns of a miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands at 2.4GHz and 3.5GHz, FIG. 5(a) shows the E-plane radiation pattern of the antenna at 2.4GHz, FIG. 5(b) shows the H-plane radiation pattern of the antenna at 2.4GHz, FIG. 5(c) shows the E-plane radiation pattern of the antenna at 3.5GHz, and FIG. 5(d) shows the H-plane radiation pattern of the antenna at 3.5 GHz;
FIG. 6 is a schematic diagram of the broadband gain of the miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands.
Description of reference numerals: 1. a dielectric coating; 2. a metal radiating surface; 3. a Y-shaped planar monopole; 4. a feed coplanar waveguide; 5. folding the metal frame; 6. a tridentate feed line; 7. a ribbon-shaped tuning arm; 8. a radiation slit.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
as shown in fig. 1 to 3, the miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands of the present invention includes a dielectric coating 1 and a metal radiating surface 2, where the metal radiating surface 2 includes a Y-shaped planar monopole 3, a feeding coplanar waveguide 4, a folded metal frame 5, a tridentate feeder 6, a strip tuning arm 7, and a radiating slot 8. The dielectric coating 1 and the metal radiating surface 2 are assembled from bottom to top. The Y-shaped planar monopole 3 and the feeding coplanar waveguide 4 are installed in a coplanar mode, the Y-shaped planar monopole 3 is connected with the trident feeder line 6 and the strip tuning arm 7, the feeding coplanar waveguide 4 is connected with the folding metal frame 5 in a ground plane mode, and the radiation gaps 8 are loaded on the Y-shaped planar monopole 3 and the feeding coplanar waveguide 4 respectively.
The dielectric thickness of the dielectric coating layer 1 is preferably 1.0 mm to 1.6 mm, and the dielectric constant of the dielectric material is preferably 4.0 to 4.5, which mainly plays roles of protecting the radiation slot 8, improving antenna impedance matching, and stabilizing the radiation direction of the antenna in a wide frequency band.
The longitudinal dimension of the metallic radiating surface 2 is preferably 28 mm to 32 mm, and the transverse dimension is preferably 19 mm to 21 mm. The longitudinal dimension of the Y-type planar monopole 3 is preferably 12 mm to 13 mm, and the transverse dimension is preferably 15 mm to 20 mm. The Y-shaped plane monopole 3 plays a role in reasonably utilizing the space of the radiation unit and reducing the low-frequency resonant frequency of the patch. The longitudinal dimension of the feeding coplanar waveguide 4 is preferably 3 mm to 5 mm, and the transverse dimension is preferably 5 mm to 7 mm. The coplanar waveguide has a series of advantages of ensuring the integrity of antenna signals, improving the density of integrated circuits, having small radiation loss, high design flexibility and the like. The Y-shaped plane monopole 3 and the feed coplanar waveguide 4 form a basic metal radiation surface, and good impedance matching and radiation characteristics can be maintained in a wide frequency band.
The minimum bending length of the folded metal frame 5 is preferably 4 mm to 6 mm, the rest bending lengths are subjected to equal-difference gradual change, and the difference value is preferably 0.4 mm to 0.6 mm. The function of the folded metal frame 5 is to increase the antenna current path and reduce the antenna resonance point frequency, which is a core part of antenna miniaturization.
The lateral dimension of the tridentate power supply line 6 is preferably 3 mm to 5 mm, and the line width is preferably 0.8 mm to 1.2 mm. The trident feed line 6 is used to adjust the antenna impedance matching to improve the antenna return loss with as little effect as possible on the antenna resonant frequency.
The transverse dimension of the strip-shaped tuning arm 7 is preferably 8 mm to 10 mm, the longitudinal dimension is preferably 2 mm to 4 mm, and the width is preferably 0.8 mm to 1.2 mm, which are respectively located at both sides of the antenna feed line. The function of the strip tuning arm 7 is to create two resonance points, broaden the antenna band, and adjust the antenna return loss.
The slot width of the radiation slot 8 is preferably 0.4 mm to 0.6 mm, and is respectively loaded on the Y-type monopole and the feeding coplanar waveguide. The lengths of the transverse and longitudinal radiation gaps loaded on the right side of the Y-type planar monopole 3 are in an equal difference distribution, the minimum transverse gap length is preferably 17 mm to 18 mm, the difference is preferably 1.8 mm to 2.2 mm, the minimum longitudinal gap length is preferably 7 mm, and the difference is preferably 1.2 mm to 1.4 mm. The effect of the radiating slot 8 is to create multiple resonant frequency points to broaden the antenna bandwidth.
In this embodiment, the miniaturized antenna compatible with the 5G and Wi-Fi/WiMax frequency bands provided by the present invention is prepared according to the following preferred parameter design: the dielectric thickness of the dielectric coating layer 1 is 1.6 mm, and the dielectric constant of the dielectric material is 4.4; the longitudinal dimension of the metal radiating surface 2 is 30 mm, the transverse dimension of the metal radiating surface is 20 mm, the metal radiating surface is attached to the dielectric coating, and the thickness of the metal radiating surface is 0.018 mm; the longitudinal dimension of the Y-shaped planar monopole 3 is 12.5 mm, and the transverse dimension is 18 mm; the longitudinal dimension of the feeding coplanar waveguide 4 is 4 mm, and the transverse dimension is 6 mm; the minimum bending length of the folded metal frame 5 is 5 mm, the rest bending lengths are subjected to equal-difference gradual change, and the difference value is 0.5 mm; the transverse dimension of the tridentate feeder line 6 is 3 mm-5 mm, and the line width is 0.8 mm-1.2 mm; the transverse dimension of the strip-shaped tuning arm 7 is 9 mm, the longitudinal dimension of the strip-shaped tuning arm is 3 mm, and the width of the strip-shaped tuning arm is 1 mm and is respectively positioned at two sides of the antenna feeder line; the gap width of the radiation gap 8 is 0.5 mm, the radiation gap is respectively loaded on the Y-type monopole and the feed coplanar waveguide, the transverse and longitudinal gap lengths loaded on the right side of the Y-type monopole are in equal difference distribution, the minimum transverse gap length is 17.4 mm, the difference value is 2 mm, the minimum longitudinal gap length is 7 mm, and the difference value is 1.3 mm.
The following will provide a further detailed description of the principles of the present invention to better demonstrate the advantages of the present invention: the Y-shaped planar monopole 3 adopted by the invention effectively plays the roles of saving the antenna space and miniaturizing the antenna volume on the premise of ensuring the antenna current path, and the folding metal frame 5 plays the roles of increasing the antenna current path and reducing the antenna resonant frequency, thereby further ensuring the miniaturization of the antenna. The trident feed line 6 acts to improve the return loss of the antenna with as little effect as possible on the antenna resonant frequency: on one hand, the surface current distribution on the Y-shaped plane monopole 3 patch can have better consistency by adopting a trident feeding mode, so that the stability of input impedance is improved, and the working bandwidth of the antenna is increased; on the other hand, because there is a huge difference between the impedances of the planar monopole and the feed line, the addition of the feed-in path can also play a role in balancing the impedance between the antenna and the feed line, and thus can play an effect of impedance matching. The use of the strip-shaped tuning arm 7 adds an extra resonant frequency point to the antenna, because the antenna can be regarded as an RLC parallel loop with the characteristic of capacitance, and the strip-shaped tuning arm 7 can be regarded as an RLC series loop, and the two loops are equivalent and independent, so that two different resonant points can be generated, and the effect of widening the antenna frequency band is achieved. Furthermore, the loading radiation slot method adopted by the invention achieves the effect of adding different current paths for the antenna by adding different slots on the Y-shaped plane monopole 3 and the feed coplanar waveguide 4, and plays the role of generating a plurality of resonance frequency points to widen the bandwidth of the antenna. The monopole antenna can be directly connected with a coaxial transmission line with the characteristic impedance of 50 omega without complex impedance transformation design, so that the monopole antenna can be widely applied to antenna design schemes under the conditions of simplification, miniaturization and limited space.
As shown in fig. 4-6, the performance of the miniaturized antenna compatible with 5G and Wi-Fi/WiMax bands provided by the present invention is as follows: the return loss of the antenna is less than-10 dB in the working bandwidth of 2.4GHz-3.5GHz, the gain is greater than 1.5dBi, and the directional diagram at 2.5GHz and 3.2GHz has stronger consistency and has the radiation characteristic of an omnidirectional antenna.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (10)
1. A miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands is characterized in that: comprises a medium coating (1) and a metal radiation surface (2) which are assembled from bottom to top; the metal radiation surface (2) comprises a Y-shaped plane monopole (3) and a feed coplanar waveguide (4) which are installed in a coplanar manner, a trident feeder line (6) and a strip tuning arm (7) which are connected to the Y-shaped plane monopole (3), a folding metal frame (5) which is connected to the ground plane of the feed coplanar waveguide (4), and radiation gaps (8) which are loaded on the Y-shaped plane monopole (3) and the feed coplanar waveguide (4) respectively; the folding part of the folding metal frame (5) is positioned above the Y-shaped plane monopole (3), and the folding part is bent in a snake shape.
2. The miniaturized antenna of claim 1 compatible with 5G and Wi-Fi/WiMax bands, wherein: the dielectric thickness of the dielectric coating layer (1) is 1.0-1.6 mm, and the dielectric constant of the dielectric material is 4.0-4.5.
3. The miniaturized antenna of claim 1 compatible with 5G and Wi-Fi/WiMax bands, wherein: the longitudinal dimension of the metal radiating surface (2) is 28 mm-32 mm, and the transverse dimension is 19 mm-21 mm.
4. The miniaturized 5G and Wi-Fi/WiMax band compatible antenna of any of claims 1-3, wherein: the longitudinal dimension of the Y-shaped planar monopole (3) is 12 mm-13 mm, and the transverse dimension of the Y-shaped planar monopole is 15 mm-20 mm.
5. The miniaturized 5G and Wi-Fi/WiMax band compatible antenna of any of claims 1-3, wherein: the longitudinal dimension of the feeding coplanar waveguide (4) is 3 mm-5 mm, and the transverse dimension is 5 mm-7 mm.
6. The miniaturized 5G and Wi-Fi/WiMax band compatible antenna of any of claims 1-3, wherein: the minimum bending length of the folding metal frame (5) is 4 mm-6 mm, the rest bending lengths are subjected to equal difference gradual change, and the difference value is 0.4 mm-0.6 mm.
7. The miniaturized 5G and Wi-Fi/WiMax band compatible antenna of any of claims 1-3, wherein: the transverse dimension of the three-fork feeder (6) is 3 mm-5 mm, and the line width is 0.8 mm-1.2 mm.
8. The miniaturized 5G and Wi-Fi/WiMax band compatible antenna of any of claims 1-3, wherein: the transverse dimension of the strip-shaped tuning arm (7) is 8 mm-10 mm, the longitudinal dimension of the strip-shaped tuning arm is 2 mm-4 mm, and the width of the strip-shaped tuning arm is 0.8 mm-1.2 mm.
9. The miniaturized 5G and Wi-Fi/WiMax band compatible antenna of any of claims 1-3, wherein: the width of the radiation gap (8) is 0.4 mm-0.6 mm.
10. The miniaturized antenna compatible with 5G and Wi-Fi/WiMax bands of claim 9, wherein: the lengths of the transverse and longitudinal radiation gaps (8) loaded on the right side of the Y-shaped planar monopole (3) are in equal difference distribution, the minimum gap length of the transverse gap is 17 mm-18 mm, the difference value is 1.8 mm-2.2 mm, the minimum gap length of the longitudinal gap is 7 mm, and the difference value is 1.2 mm-1.4 mm.
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| CN201810619049.3A CN108682943B (en) | 2018-06-15 | 2018-06-15 | Miniaturized antenna compatible with 5G and Wi-Fi/WiMax frequency bands |
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| CN108682943B true CN108682943B (en) | 2020-01-14 |
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| CN101320837A (en) * | 2008-07-17 | 2008-12-10 | 上海联能科技有限公司 | Ultra-wideband antenna based on composite right/left-handed transmission line |
| CN101752665A (en) * | 2010-01-21 | 2010-06-23 | 上海大学 | UWB (ultra wide band) antenna with band-stop characteristic |
| CN102005645B (en) * | 2010-12-02 | 2013-02-06 | 哈尔滨工程大学 | Miniaturized dual-frequency antenna |
| CN202134653U (en) * | 2011-04-15 | 2012-02-01 | 哈尔滨工程大学 | Miniaturized wideband antenna |
| CN102664307B (en) * | 2012-05-18 | 2014-05-14 | 哈尔滨工业大学 | Slot-loaded multi-frequency printed antenna |
| CN103199339B (en) * | 2013-03-28 | 2015-05-27 | 哈尔滨工程大学 | Reactance loaded dual-band antenna |
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