CN113690585B - Antenna device, housing and electronic equipment - Google Patents
Antenna device, housing and electronic equipment Download PDFInfo
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- CN113690585B CN113690585B CN202110918792.0A CN202110918792A CN113690585B CN 113690585 B CN113690585 B CN 113690585B CN 202110918792 A CN202110918792 A CN 202110918792A CN 113690585 B CN113690585 B CN 113690585B
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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
- H01Q1/48—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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Abstract
The application discloses an antenna device, a shell and electronic equipment, wherein the antenna device comprises a radiation main body, a first radiation branch, a second radiation branch, a feed point and a grounding point, wherein the radiation main body is provided with a first end and a second end; the first radiation branch is connected with the first end, and is provided with a first aperture end and used for realizing radiation of a first frequency band and a second frequency band; the second radiation branch is connected with the second end, the second radiation branch is provided with a second caliber end, the second caliber end and the first caliber end are oppositely arranged at intervals and are mutually coupled, and the second radiation branch and the first radiation branch are jointly used for realizing radiation of a third frequency band; the length of the first radiation branch is greater than that of the second radiation branch; the feeding point and the grounding point are electrically connected with the feeding region and the grounding region of the radiating body respectively. The antenna device, the shell and the electronic equipment can meet the bandwidth requirement of each frequency band of the antenna and improve the radiation efficiency of the antenna.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an antenna apparatus, a housing, and an electronic device.
Background
The frequency band that needs to be supported by 5G (5 th Generation Wireless Systems, fifth generation mobile communication technology) electronic devices covers a very wide frequency range, and the environmental and efficiency requirements of such electronic devices for the antenna used are also high. However, with the light and thin electronic products and diversified functions, the internal space of the electronic device is occupied by more peripheral modules, resulting in less and less internal space left for the antenna. How to improve the antenna structure under such adverse conditions to better satisfy the bandwidth and efficiency of the antenna becomes a technical problem to be solved.
Disclosure of Invention
The embodiment of the application discloses an antenna device, a shell and electronic equipment, which not only can meet the antenna bandwidth required to be supported by a 5G antenna, but also have higher efficiency.
To achieve the above object, in a first aspect, the present application discloses an antenna device comprising:
a radiating body having a first end and a second end, respectively;
the first radiation branch is connected with the first end of the radiation main body and is provided with a first caliber end, and the first radiation branch is used for realizing radiation of a first frequency band and a second frequency band;
the second radiation branch is connected with the second end of the radiation main body, the length of the first radiation branch is larger than that of the second radiation branch, the second radiation branch is provided with a second caliber end, the second caliber end and the first caliber end are arranged at opposite intervals and are mutually coupled, the second radiation branch and the first radiation branch are jointly used for realizing radiation of a third frequency range, and the frequency range of the third frequency range is larger than that of the first frequency range and the second frequency range;
a feeding point electrically connected to a feeding region of the radiation body;
and the grounding point is electrically connected with the grounding area of the radiation main body.
In a second aspect, an embodiment of the present application discloses a housing, including a housing body and an antenna device according to the first aspect, where the antenna device is disposed on the housing body.
In a third aspect, an embodiment of the present application discloses an electronic device, where the electronic device includes a housing, the housing includes a housing body and the antenna device according to the first aspect, and the antenna device is disposed on the housing body.
Compared with the prior art, the application has the beneficial effects that:
in the antenna device, the shell and the electronic equipment provided by the embodiment of the application, the antenna device realizes the radiation of the first frequency band and the second frequency band by using the first radiation branch and the radiation of the third frequency band by using the second radiation branch by arranging the first radiation branch and the second radiation branch with different lengths and enabling the first caliber end of the first radiation branch and the second caliber end of the second radiation branch to be arranged at intervals and mutually coupled, thereby not only meeting the bandwidth requirement of each frequency band of the antenna, but also improving the radiation efficiency of the antenna.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present application;
fig. 2 is a schematic structural view of a housing provided with an antenna device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an antenna device according to an embodiment of the present application;
FIG. 4 is a graph of return loss of an antenna assembly according to an embodiment of the present application;
FIG. 5 is a Smith chart of an antenna device according to an embodiment of the application;
FIG. 6 is a diagram showing an electric field distribution of an antenna device in a second frequency band according to an embodiment of the present application;
FIG. 7 is a graph showing a surface current distribution of an antenna device in a second frequency band according to an embodiment of the present application;
FIG. 8 is a far field radiation pattern of an antenna device in a second frequency band according to an embodiment of the present application;
FIG. 9 is a diagram showing a far field distribution of an antenna device in a second frequency band according to an embodiment of the present application;
fig. 10 is a diagram showing the radiation efficiency of an antenna device in a first frequency band and a second frequency band according to an embodiment of the present application;
FIG. 11 is a diagram showing an electric field distribution of an antenna device in a third frequency band according to an embodiment of the present application;
FIG. 12 is a graph showing a surface current distribution of an antenna device in a third frequency band according to an embodiment of the present application;
FIG. 13 is a far field radiation pattern of an antenna device in a third frequency band according to an embodiment of the present application;
FIG. 14 is a diagram showing a far field distribution of an antenna device in a third frequency band according to an embodiment of the present application;
fig. 15 is a diagram showing the radiation efficiency of an antenna device in a third frequency band according to an embodiment of the present application.
Icon: 1. an antenna device; 11. a radiation body; 111. a first end; 112. a second end; 12. a first radiation branch; 121. a first orifice end; 13. a second radiation branch; 131. a second bore end; 14. a first slit; 15. a second slit; 2. a housing; 21. a housing body; 10. an electronic device.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
Furthermore, the dimensions (e.g., length, width, thickness, and depth) of elements (e.g., layers, films, substrates, regions, etc.) in the drawings may be exaggerated in an unequal manner for clarity in presenting the technical features of the present application. Therefore, the embodiments of the present application are not limited to the dimensions and shapes represented by the elements in the drawings, but rather, they are intended to cover deviations in the dimensions, shapes and both, such as may be caused by actual manufacturing processes and/or tolerances. For example, the planar layer shown in the figures may have rough and/or nonlinear features, and the acute angles shown in the figures may be rounded. Therefore, the elements shown in the drawings of the present application are mainly for illustration, and are not intended to precisely describe the actual shapes of the elements, nor limit the scope of the claims.
Moreover, the use of the terms "about," "approximately" or "approximately" herein above described encompasses not only the values and ranges of values explicitly recited, but also the allowable deviation as would be understood by one of ordinary skill in the art to which the application pertains. The deviation range may be determined by an error generated during measurement, which may be due to limitations of both the measurement system or the process conditions, for example. The terms "about," "approximately" or "approximately" as used herein may be used to select an acceptable range of deviation or standard deviation based on optical, etching, mechanical or other properties.
The technical scheme of the application will be further described with reference to the examples and the accompanying drawings.
In an electronic device using the 5G mobile communication technology, the requirement for antenna design is high. On the one hand, 5G electronic equipment needs to support SUB-6G NR frequency bands N77 (3300 MHz-4200 MHz), 78 (3300 MHz-3800 MHz) and N79 (4800 MHz-5000 MHz), and the coverage frequency ranges of the three frequency bands are very wide, namely, the bandwidth requirement on the antenna is high; on the other hand, in order to reduce the influence of devices around the antenna on the antenna performance, the clearance environment requirement on the periphery of the antenna is also high. However, with the trend of electronic devices (such as smart phones, smart wearable devices, etc.) toward light weight, full screen and multiple functions, the space available for the antenna inside the electronic devices has been smaller and smaller, which is difficult to meet the requirements of the antenna design and layout in the related art.
In this regard, the embodiment of the application provides an antenna device, a housing and an electronic device, and by improving the structure of the antenna device, the bandwidth requirement of a 5G antenna can still be met under the conditions of more electronic components around the antenna device and poorer headroom environment, and meanwhile, the antenna efficiency can also be improved, so that the antenna device is suitable for 5G electronic devices. It should be noted that, the electronic device to which the antenna device of the present application is applied includes, but is not limited to, a smart phone, a smart wearable device, a desktop computer, a notebook computer, a tablet computer, a camera, and a vehicle-mounted device. In the embodiment of the application, the electronic equipment is taken as a smart phone for explanation.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and fig. 2 is a schematic structural diagram of a housing with an antenna device according to an embodiment of the present application, that is, fig. 2 is a schematic structural diagram of the housing of the electronic device in fig. 1 and the antenna device disposed on the housing.
The electronic device 10 according to the embodiment of the application includes a housing 2, the housing 2 includes a housing body 21 and an antenna device 1, and the antenna device 1 is disposed on the housing body 21. The housing 2 may be a rear cover housing 2 of the electronic device 10, the electronic device 10 may further include a display screen that is mutually covered with the rear cover housing 2, a housing space is formed between the display screen and the rear cover housing 2, and the antenna device 1 is disposed on the housing body 21 of the housing 2 and is located in the housing space.
The antenna device 1 may be disposed on the housing body 21 in various manners, for example, the antenna device 1 may be manufactured by a process of manufacturing an FPC, and then the antenna device 1 is fixed on the housing body 21 by a manner of pasting or screwing, etc., in which the antenna device 1 is easy to be assembled and disassembled and easy to be processed; the antenna device 1 can also be molded to the housing body 21 using LDS technology, in which way the stability of the antenna device 1 is high.
The electronic device 10 may also include light sensors, receivers, microphones, etc. disposed in the receiving space or on the housing 2. The antenna device 1 in the embodiment of the present application may be disposed in a poor antenna environment with many other surrounding devices, for example, the antenna device 1 is opposite to the position of the optical sensor along the direction perpendicular to the plane where the display screen is located, and the left and right sides of the antenna device 1 are adjacent to the receiver and the microphone, respectively. Even in such a poor antenna environment, the antenna device 1 of the embodiment of the present application can still meet the requirements of antenna bandwidth and efficiency. Further, the electronic device 10 may further include a PCB board, and a positional relationship between the antenna device 1 and the PCB board will be explained in more detail later when describing the structural design of the antenna device 1.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an antenna device 1 according to an embodiment of the present application, where the antenna device 1 includes:
a radiating body 11 having a first end 111 and a second end 112;
a first radiation branch 12 connected to the first end 111 of the radiation body 11, the first radiation branch 12 having a first aperture end 121, the first radiation branch 12 being configured to implement radiation in a first frequency band and a second frequency band;
the second radiation branch 13 is connected with the second end 112 of the radiation main body 11, the second radiation branch 13 is provided with a second caliber end 131, the second caliber end 131 and the first caliber end 121 are oppositely arranged at intervals and are mutually coupled, the second radiation branch 13 and the first radiation branch 12 are jointly used for realizing radiation of a third frequency band, and the frequency range of the third frequency band is respectively larger than the frequency range of the first frequency band and the frequency range of the second frequency band; wherein the length of the first radiation branch 12 is greater than the length of the second radiation branch 13;
a feeding point (not shown) electrically connected to a feeding region of the radiation body 11;
a ground point (not shown) is electrically connected to the ground region of the radiation body 11.
The feeding point may be electrically connected to the feeding area of the radiating body 11 through a feeder line, so that an excitation current is fed to the radiating body 11, so that the radiating body 11 can transmit and receive signals of a specified frequency band.
In the embodiment of the present application, by improving the structure of the antenna device 1, the antenna device 1 includes, in addition to the radiation body 11, the feeding point and the grounding point, the first radiation branch 12 and the second radiation branch 13 having different lengths, and radiation of different frequency band wavelengths can be respectively realized by the difference of the two having different lengths. Meanwhile, the first caliber end 121 of the first radiation branch 12 and the second caliber end 131 of the second radiation branch 13 are arranged at intervals and are mutually coupled, so that the purpose of improving the bandwidth to meet the use requirement of the antenna is achieved. Specifically, since the first caliber end 121 and the second caliber end 131 are coupled to each other, the first radiation branch 12 can transmit and receive electromagnetic wave signals, and at the same time, the second radiation branch 13 can also transmit and receive electromagnetic wave signals, so that the coupling effect can improve the frequency band width which can be satisfied by the first radiation branch 12. Similarly, the second radiating stub 13 also satisfies a wider frequency band bandwidth by similar action.
Further, in the embodiment of the present application, the first frequency band is an N77 frequency band, and the frequency range of the frequency band is 3300MHz to 4200MHz; the second frequency band is an N78 frequency band, and the frequency range of the frequency band is 3300 MHz-3800 MHz; the third frequency band is an N79 frequency band, and the frequency range of the frequency band is 4400 MHz-5000 MHz. The three frequency bands are several main frequency bands that need to be satisfied in the 5G mobile communication technology. The antenna device 1 of the embodiment of the application realizes the radiation of the N77 frequency band and the N78 frequency band (namely, realizes the electromagnetic wave signal receiving and transmitting of the two frequency bands) through the first radiation branch 12, and realizes the radiation of the N79 frequency band (namely, realizes the electromagnetic wave signal receiving and transmitting of the frequency band) through the combined action of the first radiation branch 12 and the second radiation branch 13.
Further, in the embodiment of the present application, the antenna device 1 has a plurality of different operation modes, the operation mode of the second frequency band is 1/4 wavelength of the first radiation branch 12, and the operation mode of the third frequency band is the co-loading of 1/4 wavelength of the second radiation branch 13 and 1/2 wavelength of the first radiation branch 12. The frequencies of the different frequency bands of the antenna device 1 are closely related to the radiation branch wavelength of the antenna, and the lower the frequency is, the longer the required wavelength is, the higher the frequency is, and the shorter the required wavelength is. The required operating frequency range of the N78 band is 3300-3800 MHz, which needs a longer wavelength to be satisfied, so in the embodiment of the present application, the operating mode of the band (i.e. the second band) is satisfied by 1/4 wavelength of the first radiation branch 12. The operating frequency range required by the N79 frequency band is between 4400 and 5000MHz, which is higher than the operating frequency of the N78 frequency band, and needs shorter wavelength to meet the requirement, so in the embodiment of the present application, on one hand, a part of the frequency range of the frequency band (i.e., the third frequency band) is met by 1/4 wavelength of the second radiation branch 13, and on the other hand, another part of the frequency range of the frequency band is met by coupling of the first radiation branch 12 and the second radiation branch 13 and by 1/2 wavelength of the first radiation branch 12. By this, the above-mentioned wavelength limitation of the radiation branches ensures that the antenna device 1 has a plurality of different operating modes.
Further, a first slit 14 is formed between the side of the first radiating stub 12 near the first end 111 and the radiating body 11. As shown in fig. 3, the first end 111 of the radiation body 11 is located at substantially the upper end of the right half portion of the entire radiation body 11, the first radiation branch 12 is connected to the first end 111, and the first radiation branch 12 is formed to extend from the first end 111 to the left by bending. An elongated first slit 14 is formed between a side of the first radiating stub 12 near the first end 111 (i.e., the left half of the first radiating stub 12) and the radiating body 11. By opening this gap, the current passing through the first radiating branch 12 can be made to form a differential mode, thereby increasing the resonance of the first radiating branch 12. That is, for the working modes of the second frequency band and the third frequency band, the first slot 14 is formed on the first radiation branch 12, so that the first radiation branch 12 can increase resonance, which is beneficial to widening the working bandwidth of the antenna device 1, and better meeting the working mode requirements of the frequency bands.
Further, the length direction of the first slit 14 is parallel to the length extending direction (i.e., the left-right direction in fig. 3) of the first radiating branch 12, and the width direction of the first slit 14 is perpendicular to the length direction of the first slit 14. The width of the first slit 14 along the direction perpendicular to the length direction of the first radiation branch 12 is d, and d is more than or equal to 0.1mm and less than or equal to 0.3mm. When the slit width of the first slit 14 is within this range, the increased resonance required can be better satisfied, and thus the widened operating bandwidth required can be satisfied. Especially d=0.25 mm, the effect is better.
Further, in addition to the first radiating stub 12, a first slit 14 is formed, and a second slit 15 is formed between a side of the second radiating stub 13 near the second end 112 and the radiating body 11. Referring to fig. 3, the second end 112 of the radiation body 11 is located at a lower end of a left half portion of the entire radiation body 11, the second radiation branch 13 is connected to the second end 112, and the second radiation branch 13 is formed by sequentially bending and extending leftwards, upwards and rightwards from the second end 112. A second slit 15 is formed between a side of the second radiation stub 13 near the second end 112 (i.e., a position of the second radiation stub 13 right and lower) and the radiation body 11, and the second slit 15 extends to a second caliber end 131 of the second slit 15 (i.e., a distal end of the second slit 15). Compared with the mode of directly slotting the left end of the radiation main body 11, the embodiment of the application can effectively increase the length of the second radiation branch 13 by arranging the second slot 15 at a specific position under the condition of ensuring that the antenna device 1 occupies a smaller space. Since the resonant frequency of the antenna is inversely proportional to the wavelength, the higher the resonant frequency, the shorter the wavelength in the case of a certain propagation speed; conversely, the lower the resonant frequency, the longer the wavelength. When the second slit 15 is formed between the second radiating stub 13 and the radiating body 11, it is advantageous to make the resonance frequency of the second radiating stub 13 on the N79 frequency band, equivalent to increasing the length of the second radiating stub 13 by slitting. That is, by bending the second radiating branch 13 and providing the second slot 15, the whole antenna device 1 occupies a smaller area, and meanwhile, the working mode requirement of the third frequency band is more easily satisfied by the combined action of the 1/4 wavelength of the second radiating branch 13 and the 1/2 wavelength of the first radiating branch 12, so that the internal space of the electronic device is not excessively occupied, and the required working frequency of the third frequency band is more easily satisfied.
In addition, the antenna device 1 of the embodiment of the present application has double resonance in the bandwidth range of 3.3G to 4.2G, and the antenna device 1 has double resonance in the bandwidth range of 4.8G to 5G. Therefore, the antenna device 1 of the embodiment of the application not only can meet the bandwidth requirement of the antenna on the working frequency band, but also can improve the working efficiency of the antenna.
As described above, the antenna device 1 according to the embodiment of the present application can satisfy the bandwidth requirement and the antenna operation efficiency of the corresponding frequency band even if it is installed in the electronic apparatus 10 having a poor antenna environment. The position of the antenna arrangement 1 in the electronic device 10 is further described below with reference to fig. 1 and 2.
In the antenna device 1 of the embodiment of the present application, the first caliber end 121 of the first radiating branch 12 is located at the top of the housing body 21 and is located in the clearance area of the housing body 21, and the second caliber end 131 of the second radiating branch 13 is located at the back of the housing body 21 and is located in the clearance area of the housing body 10. The top space of the shell body 21 has better signal receiving and transmitting capability, the first aperture end 121 of the first radiation branch 12 is arranged in the clearance area at the top of the shell body 10, the better signal receiving and transmitting capability of the top space of the electronic equipment 10 can be fully utilized, and the working efficiency of the N77 frequency band and the N78 frequency band is further improved. The second caliber end 131 of the second radiation branch 13 is arranged in the clearance area of the back surface of the shell body 21, so that the interference between the second radiation branch 13 and the first radiation branch 12 can be avoided, and the problems that other components of the electronic equipment 10 cause signal shielding and the like to the second radiation branch 13 can be avoided. Specifically, when the second caliber end 131 of the second radiation branch 13 is disposed on the back of the housing body 21, the situation that both the second radiation branch 13 and the first radiation branch 12 are disposed on the top of the housing body 21 can be avoided, and the problem of mutual interference signals possibly occurring when two radiation branches are disposed in a limited top space can be avoided; in addition, when the second radiation branch 13 is disposed on the side surface of the housing body 21, other electronic components also disposed on the side surface of the housing body 21 may be shielded. Therefore, the arrangement position of the antenna device 1 in the electronic equipment 10 can fully utilize the limited internal space of the electronic equipment, ensure good antenna performance and reduce mutual interference between radiation branches of different antenna devices or between the antenna devices and other components.
Further, in the embodiment of the application, a first included angle alpha is formed between the plane of the second radiation branch 13 and the plane of the PCB, alpha is more than or equal to 0 degree and less than or equal to 30 degrees, and a second included angle beta is formed between the plane of the second radiation branch 13 and the plane of the first radiation branch 12, and beta is more than or equal to 0 degree and less than 180 degrees. That is, the second radiation branch 13 and the PCB board may be disposed in parallel or disposed at a smaller inclined angle therebetween; the second radiation branch 13 is not arranged in parallel with the first radiation branch 12, but is arranged obliquely at an angle to each other. As a preferred embodiment, the first angle α is 0 °, i.e. the plane of the second radiating branch 13 is parallel to the plane of the PCB board; the second angle β is 90 °, i.e. the plane in which the first radiating stub 12 is located is perpendicular to the plane of the PCB. By such arrangement, the transverse wave and the longitudinal wave of the grounding portion (i.e., PCB) of the electronic device 10 can be fully utilized, and it is ensured that the user can smoothly transmit and receive signals regardless of the direction in which the user uses the electronic device. For example, when the user holds the electronic device vertically, at least the second radiation branch 13 is not blocked, so that signals can be successfully transmitted and received; when the user holds the electronic device laterally, at least the first radiation branch 12 is not blocked, and signals can be transmitted and received smoothly.
The performance indexes of the first radiation branch 12 and the second radiation branch 13 in the antenna device 1 according to the embodiment of the present application are further explained below.
Referring to fig. 4, fig. 4 is a return loss diagram of the antenna apparatus 1 according to an embodiment of the present application. From the figure, it can be seen that the antenna device 1 has a plurality of operation modes, and is double-resonant in the bandwidth of 3.3 GHz-4.2 GHz, which satisfies the bandwidth requirements of the N77 frequency band and the N78 frequency band, and is double-resonant in the bandwidth of 4.4 GHz-5 GHz, which satisfies the bandwidth requirements of the N79 frequency band.
Referring to fig. 5, fig. 5 is a smith chart of the antenna device 1 according to an embodiment of the present application, from which it can be seen that the impedance of the antenna device 1 at four resonance frequency points is well matched.
Referring to fig. 6 to 10, fig. 6 is an electric field distribution diagram of the antenna device 1 in the second frequency band according to the embodiment of the present application, fig. 7 is a surface current distribution diagram of the antenna device 1 in the second frequency band according to the embodiment of the present application, fig. 8 is a far field radiation diagram of the antenna device 1 in the second frequency band according to the embodiment of the present application, fig. 9 is a far field distribution diagram of the antenna device 1 in the second frequency band according to the embodiment of the present application, and fig. 10 is an antenna radiation efficiency diagram of the antenna device 1 in the first frequency band and the second frequency band according to the embodiment of the present application. As can be seen from fig. 6, when the antenna device 1 resonates in the second frequency band, the electric field is mainly distributed on the first radiation branch 12, which illustrates that the first radiation branch 12 has the capability of radiating electromagnetic wave signals to the space in the frequency band. Meanwhile, as can be seen from the curved arrow in fig. 7, when the antenna device 1 operates in the second frequency band, the current is mainly distributed in the first radiating branch 12. As is clear from fig. 8 and 9, the antenna device 1 has good directivity in the second frequency band. In fig. 8, the solid line indicates the far-field pattern of the E-plane in the direction parallel to the electric field, and the broken line indicates the far-field pattern of the H-plane in the direction parallel to the magnetic field. Fig. 10 shows the efficiency of the antenna device 1 at different resonance points when operating in the second frequency band, and it can be seen that the antenna efficiency at each resonance point in the diagram is relatively high, about-4.6 dB (i.e. 35% of the corresponding antenna efficiency), and meets the requirement for the antenna efficiency.
Referring to fig. 11 to 15, fig. 11 is an electric field distribution diagram of the antenna device 1 in the third frequency band according to the embodiment of the present application, fig. 12 is a surface current distribution diagram of the antenna device 1 in the third frequency band according to the embodiment of the present application, fig. 13 is a far field radiation diagram of the antenna device 1 in the third frequency band according to the embodiment of the present application, fig. 14 is a far field distribution diagram of the antenna device 1 in the third frequency band according to the embodiment of the present application, and fig. 15 is an antenna radiation efficiency diagram of the antenna device 1 in the third frequency band according to the embodiment of the present application. As can be seen from fig. 11, when the antenna device 1 resonates in the third frequency band, the electric field is mainly distributed on the second radiating branch 13, especially the second caliber end 131 of the second radiating branch 13, which indicates that the second radiating branch 13 has the capability of radiating electromagnetic wave signals to the space in the frequency band. Meanwhile, as can be seen from the curved arrow in fig. 7, when the antenna device 1 operates in the third frequency band, the current is mainly distributed on the second radiating branch 13 and the first radiating branch 12. As is clear from fig. 13 and 14, the antenna device 1 has good directivity in the third frequency band. In fig. 1, the solid line indicates the far-field pattern of the E-plane in the direction parallel to the electric field, and the broken line indicates the far-field pattern of the H-plane in the direction parallel to the magnetic field. Fig. 15 shows the efficiency of the antenna device 1 at different resonance points when operating in the third frequency band, and it can be seen that the antenna efficiency at each resonance point in the graph is relatively high, about-3.0 dB (i.e., the corresponding antenna efficiency is 49.4%), and meets the requirement for the antenna efficiency.
The second frequency band is an N78 frequency band, and the third frequency band is an N79 frequency band. It can be understood that, since the partial frequency ranges of the N77 frequency band and the N78 frequency band overlap, the N77 frequency band and the N78 frequency band can be understood as one frequency band, or the characteristics of the antenna device 1 in the N78 frequency band can reflect the characteristics of the antenna device 1 in the N77 frequency band, so the performance test result of the antenna device 1 in the N77 frequency band is not further provided in the embodiment of the present application.
According to the embodiment of the application, through structural improvement of the antenna device, the bandwidth of the frequency bands supported by N77, N78 and N79 5G mobile communication can be met even if the antenna device is installed in electronic equipment with more surrounding devices, and the antenna device can also meet the requirements of higher antenna working efficiency and stronger practicability.
The antenna device and the electronic device disclosed in the embodiments of the present application have been described in detail, and specific examples are applied to illustrate the principles and embodiments of the present application, where the description of the above embodiments is only for helping to understand the antenna device and the electronic device of the present application and the core ideas thereof; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present application, the present disclosure should not be construed as limiting the present application in summary.
Claims (10)
1. An antenna device, characterized in that the antenna device comprises:
a radiating body having a first end and a second end;
the first radiation branch is connected with the first end of the radiation main body and is provided with a first caliber end, and the first radiation branch is used for realizing radiation of a first frequency band and a second frequency band;
the second radiation branch is connected with the second end of the radiation main body, the length of the first radiation branch is larger than that of the second radiation branch, the second radiation branch is provided with a second caliber end, the second caliber end and the first caliber end are arranged at opposite intervals and are mutually coupled, the second radiation branch and the first radiation branch are jointly used for realizing radiation of a third frequency band, the frequency range of the third frequency band is larger than that of the first frequency band and the second frequency band, the frequency range of the first frequency band is 3300 MHz-4200 MHz, the frequency range of the second frequency band is 3300 MHz-3800 MHz, and the frequency range of the third frequency band is 4400 MHz-5000 MHz;
a feeding point electrically connected to a feeding region of the radiation body;
and the grounding point is electrically connected with the grounding area of the radiation main body.
2. The antenna device according to claim 1, wherein the second frequency band has an operating mode of 1/4 wavelength of the first radiating branch, and the third frequency band has an operating mode loaded by the 1/4 wavelength of the second radiating branch and the 1/2 wavelength of the first radiating branch together.
3. The antenna device according to claim 2, wherein a first gap is formed between a side of the first radiating stub near the first end and the radiating body.
4. An antenna arrangement according to claim 3, characterized in that the width of the first slot in the direction perpendicular to the length of the first radiating stub is d,0.1mm +.d +.0.3 mm.
5. The antenna device according to claim 2, wherein a second slit is formed between a side of the second radiating stub near the second end and the radiating body.
6. The antenna device according to any of claims 1-5, wherein the antenna device is dual resonant in a bandwidth range of 3.3 GHz-4.2 GHz and the antenna device is dual resonant in a bandwidth range of 4.4 GHz-5 GHz.
7. A housing comprising a housing body and an antenna device according to any one of claims 1 to 6, the antenna device being provided in the housing body.
8. An electronic device comprising a housing, the housing comprising a housing body and the antenna device according to any one of claims 1 to 6, the antenna device being provided in the housing body.
9. The electronic device of claim 8, wherein a first caliber end of the first radiating branch is located at a top of the housing body and within a headroom region of the housing body, and a second caliber end of the second radiating branch is located at a back of the housing body and within a headroom region of the housing body.
10. The electronic device of claim 8, further comprising a PCB board, wherein the plane of the second radiating branch is at a first angle α,0 ° - α -30 °, and the plane of the PCB board is at a second angle β,0 ° < β < 180 °.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110918792.0A CN113690585B (en) | 2021-08-11 | 2021-08-11 | Antenna device, housing and electronic equipment |
| PCT/CN2022/105688 WO2023016184A1 (en) | 2021-08-11 | 2022-07-14 | Antenna apparatus, housing, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110918792.0A CN113690585B (en) | 2021-08-11 | 2021-08-11 | Antenna device, housing and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113690585A CN113690585A (en) | 2021-11-23 |
| CN113690585B true CN113690585B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110918792.0A Active CN113690585B (en) | 2021-08-11 | 2021-08-11 | Antenna device, housing and electronic equipment |
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| Country | Link |
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| CN (1) | CN113690585B (en) |
| WO (1) | WO2023016184A1 (en) |
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|---|---|---|---|---|
| CN113690585B (en) * | 2021-08-11 | 2023-09-22 | Oppo广东移动通信有限公司 | Antenna device, housing and electronic equipment |
| CN115548650A (en) * | 2022-09-23 | 2022-12-30 | 深圳市飞比电子科技有限公司 | Intelligent gas valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203617418U (en) * | 2013-11-22 | 2014-05-28 | 上海斐讯数据通信技术有限公司 | Mobile phone antenna |
| CN112928456A (en) * | 2021-03-30 | 2021-06-08 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100289700A1 (en) * | 2009-05-15 | 2010-11-18 | Chung-Wen Yang | Multi-band antenna |
| CN212303895U (en) * | 2020-05-30 | 2021-01-05 | 昆山丰景拓电子有限公司 | Mobile phone with broadband antenna |
| CN112751204B (en) * | 2020-12-29 | 2023-04-28 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN113690585B (en) * | 2021-08-11 | 2023-09-22 | Oppo广东移动通信有限公司 | Antenna device, housing and electronic equipment |
-
2021
- 2021-08-11 CN CN202110918792.0A patent/CN113690585B/en active Active
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- 2022-07-14 WO PCT/CN2022/105688 patent/WO2023016184A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203617418U (en) * | 2013-11-22 | 2014-05-28 | 上海斐讯数据通信技术有限公司 | Mobile phone antenna |
| CN112928456A (en) * | 2021-03-30 | 2021-06-08 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023016184A1 (en) | 2023-02-16 |
| CN113690585A (en) | 2021-11-23 |
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