Electronic devices

Abstract

The present application relates to an electronic device including: a housing including a covering body, the covering body having a first interface and a second interface spaced apart in a thickness direction and having a non-uniform spacing. A carrier having a third interface disposed toward the first interface. And an antenna body disposed on the third interface and generating a first transmission wave and a second transmission wave, the first transmission wave starting from the first interface and passing through the second interface to form a first main transmission wave, the same first transmission wave is reflected between the first interface and the second interface and then forms a first sub-transmission wave passing through the second interface, the second transmission wave starting from the third interface and passing through the first interface to form a second main transmission wave, the same second transmission wave is reflected between the first interface and the third interface and then forms a second sub-transmission wave passing through the first interface, the first main transmission wave and the first sub-transmission wave have the same phase, and the second main transmission wave and the second sub-transmission wave have the same phase. In this way, the radiation performance of the electronic device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an electronic equipment. Background Art

[0002] As the demand for wireless communication capacity increases day by day, moving to higher frequency bands to compete for available spectrum resources will be an effective solution. Today, the 5G communication FR2 protocol will upgrade the frequency band to the millimeter wave band, using large bandwidth to increase communication transmission rate and capacity. However, there are certain challenges in applying millimeter wave communication technology to electronic devices such as mobile phones, such as increased transmission loss, and the dielectric materials around the millimeter wave antenna are prone to cause greater reflection of electromagnetic waves, which in turn affects the radiation performance of the millimeter wave antenna. At the same time, it is also difficult to take into account the smaller electronic devices to accommodate existing electronic components. Summary of the invention

[0003] A technical problem solved by the present application is how to improve the radiation performance of electronic equipment while ensuring that the electronic equipment has a reasonable volume.

[0004] An electronic device, comprising:

[0005] The housing comprises a covering body, wherein the covering body has a first interface and a second interface which are arranged at intervals in a thickness direction and have a non-uniform spacing;

[0006] a carrier board having a third interface disposed toward the first interface; and

[0007] The antenna body is arranged on the third interface and generates a first transmission wave and a second transmission wave, wherein the first transmission wave starts from the first interface and passes through the second interface to form a first main transmission wave, and the first transmission wave is reflected between the first interface and the second interface to form a first sub-transmission wave that passes through the second interface, and the second transmission wave starts from the third interface and passes through the first interface to form a second main transmission wave, and the second transmission wave is reflected between the first interface and the third interface to form a second sub-transmission wave that passes through the first interface, and the first main transmission wave and the first sub-transmission wave have the same phase, and the second main transmission wave and the second sub-transmission wave have the same phase.

[0008] In one embodiment, the housing includes a first covering portion and a second covering portion connected to each other, the thickness of the second covering portion is greater than the thickness of the first covering portion, and the second covering portion is spaced apart from the antenna body.

[0009] In one embodiment, the orthographic projection of the second covering portion on the carrier covers the antenna body.

[0010] In one embodiment, the same first transmission wave forms multiple first reflected waves between the first interface and the second interface, and the phase delay A generated by the first reflected wave from the second interface to the first interface and from the first interface to the second interface is 180° respectively.

[0011] In one embodiment, the distance between the first interface and the second interface is d, the frequency of the electromagnetic wave generated by the antenna body is f, and the angle between the emission direction and the normal of the first interface is θ, and the equivalent relative dielectric constant of the covering body is ε, where A=2πd / (λ g *cosθ), and λ g =3*10 8 / (f*ε 1 / 2 ).

[0012] In one embodiment, the same second transmission wave forms multiple second reflected waves between the first interface and the third interface, and the phase delay B generated by the second reflected wave from the third interface to the first interface and from the first interface to the third interface is 90° respectively.

[0013] In one embodiment, the distance between the portion of the third interface not covered by the antenna body and the first interface is D, and the wavelength of the electromagnetic wave generated by the antenna body is λ 0 The angle between its emission direction and the normal direction of the first interface is θ, where B = 2πD / (λ 0 *cosθ).

[0014] In one embodiment, the housing includes a covering body, the first interface and the second interface are both located on the covering body, and the material of the covering body includes glass.

[0015] In one embodiment, the shell further includes a rear shell connected to the covering body, the rear shell having an inner surface and an outer surface, the inner surface and the first interface are both arranged toward the carrier, the outer surface and the second interface are both arranged away from the carrier, the inner surface is flush with a portion of the first interface, or the first interface is further away from the outer surface relative to the inner surface along the thickness direction of the shell.

[0016] In one embodiment, the second interface is further away from the inner surface than the outer surface along the thickness direction of the shell.

[0017] In one embodiment, the carrier comprises a circuit board.

[0018] A technical effect of an embodiment of the present application is: in view of the uneven spacing between the first interface and the second interface, the shell is designed with uneven thickness. In this way, the phases of the first main transmission wave and the first sub-transmission wave can be guaranteed to be the same, and the phases of the second main transmission wave and the second sub-transmission wave can be the same, while the thickness of the electronic device is constant without increasing the volume and satisfying the assembly of other electronic components, thereby improving the radiation performance of the antenna body and improving the antenna radiation field pattern. In fact, if the shell adopts an equal thickness design to keep the volume of the electronic device unchanged, it is impossible to keep the above phases the same and reserve enough installation space for other electronic components. If the shell adopts an equal thickness design to make the above phases the same, the gap between the shell and the carrier will be enlarged to increase the volume of the electronic device. Therefore, for the two conditions of satisfying the above phases and keeping the size of the electronic device constant to have enough limited installation space to accommodate other electronic components, the shell with equal thickness design cannot meet them at the same time, and the realization of one condition is at the expense of the other condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a planar structure of an electronic device provided by an embodiment;

[0020] Figure 2 for Figure 1 A schematic diagram of the CC cross-sectional structure of the electronic device shown;

[0021] Figure 3 for Figure 1 Schematic diagram of reflection and penetration of electromagnetic waves between a first interface and a second interface in the electronic device shown;

[0022] Figure 4 for Figure 1 Schematic diagram of reflection and penetration of electromagnetic waves between the first interface and the third interface in the electronic device shown;

[0023] Figure 5 for Figure 1 A schematic diagram of a 3D radiation pattern simulation of an antenna body in the electronic device shown;

[0024] Figure 6 Schematic diagram of the 3D radiation field simulation of the antenna body in a traditional electronic device. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0027] See also Figure 1 and Figure 2 The electronic device 10 provided in the present application may be a smart phone, etc. The electronic device 10 includes a housing 100, an antenna body 200, a carrier board 300 and a camera 600. The carrier board 300 may be a circuit board 310. The circuit board 310 and the antenna body 200 are used to be contained in the cavity surrounded by the housing 100. The housing 100 includes a covering body 110. The material used for the covering body 110 includes glass. For example, the covering body 110 may be a glass covering body made entirely of glass material. The camera 600 is arranged on the covering body 110. The camera 600 may be a rear camera of a smart phone. The other parts of the housing 100 except the covering body 110 may be made of alloy materials such as aluminum alloy and titanium alloy, or may be made of non-metallic materials such as ceramics.

[0028] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the covering body 110 has a first interface 111 and a second interface 112 facing oppositely. The first interface 111 and the second interface 112 are actually two end surfaces in the thickness direction of the covering body 110. The first interface 111 is closer to the circuit board 310 than the second interface 112, that is, the first interface 111 is arranged toward the circuit board 310. The thickness of the covering body 110 is uneven, and the thickness is the distance between the first interface 111 and the second interface 112, that is, the covering body 110 is not designed with equal thickness. For example, the covering body 110 includes a first covering portion 113 and a second covering portion 114, the thickness of the second covering portion 114 is greater than the thickness of the first covering portion 113, and the orthographic projection of the second covering portion 114 along its thickness direction can cover the entire antenna body 200. The length of the second covering portion 114 can be about 6.6 mm, the width of the second covering portion 114 can be about 5.1 mm, and the thickness of the second covering portion 114 can be about 0.95 mm. The thickness of the first covering portion 113 may be about 0.6 mm. Obviously, the surfaces of the first covering portion 113 and the second covering portion 114 facing the circuit board 310 constitute the first interface 111 , and the surfaces of the first covering portion 113 and the second covering portion 114 facing away from the circuit board 310 constitute the second interface 112 .

[0029] By making the thickness of the first covering portion 113 smaller than the thickness of the second covering portion 114, a larger spacing space can be provided between the first covering portion 113 and the circuit board 310, and the spacing space provides sufficient space for the installation of other components in the electronic device 10, so that other components can make full use of the spacing space and avoid occupying the installation space outside the spacing space, and then to a certain extent, the electronic device 10 can be made more compact in structure, and the volume of the electronic device 10 can be reduced, so as to realize the miniaturization design of the electronic device 10. The equivalent relative dielectric constant of the covering body 110 can be recorded as ε. The spacing between the antenna body 200 and the second covering portion 114 can be about 0.5 mm, and there is a spacing gap between the antenna body 200 and the second covering portion 114, and no substance is filled in the spacing gap, that is, the substance filled in the spacing gap is air. In other embodiments, the spacing between the antenna body 200 and the second covering portion 114 can be filled with dielectric materials, etc.

[0030] In some embodiments, the circuit board 310 includes a metal wiring layer, which is arranged toward the cover body 110, and the metal wiring layer has a third interface 311, and the third interface 311 is arranged toward the first interface 111. The antenna body 200 is arranged on the third interface 311. For example, the antenna body 200 can be directly attached to the third interface 311, or a groove can be opened on the third interface 311, and the antenna body 200 can be matched with the groove. In other words, the antenna body 200 is embedded in the circuit board 310. The electromagnetic waves radiated by the antenna body 200 are millimeter waves, so the antenna body 200 can be used for receiving and sending 5G signals.

[0031] The angle between the emission direction of the electromagnetic wave emitted by the antenna body 200 and the normal of the first interface 111 is θ. After the electromagnetic wave passes through the first interface 111, it will form a first transmission wave 400 emitted from the first interface 111 to the second interface 112. Before being reflected in the cover body 110, a part of the first transmission wave 400 penetrates the second interface 112 to form a first main transmission wave 410. The first main transmission wave 410 is essentially an electromagnetic wave radiated from the antenna body 200 to the outside of the entire electronic device 10. When the first transmission wave 400 reaches the second interface 112, a portion of the energy of the first transmission wave 400 will penetrate the second interface 112 to form a first main transmission wave 410 that radiates outside the entire electronic device 10, and another portion of the energy of the first transmission wave 400 will be reflected on the second interface 112 to form a first first reflected wave 430 that is emitted from the second interface 112 to the first interface 111, and the first first reflected wave 430 will generate a second first reflected wave 430 that is emitted from the first interface 111 to the second interface 112 on the first interface 111. A portion of the energy of the second first reflected wave 430 will penetrate the second interface 112 to form a first first sub-transmission wave 420 that radiates outside the entire electronic device 10, and at the same time, a portion of the energy of the second first reflected wave 430 will be reflected on the second interface 112 to form a third first reflected wave 430 that is emitted from the second interface 112 to the first interface 111. The third first reflected wave 430 will be reflected on the first interface 111 to generate a fourth first reflected wave 430 emitted from the first interface 111 to the second interface 112, and a portion of the energy of the fourth first reflected wave 430 will penetrate the second interface 112 to form a second first sub-transmitted wave 420 radiated to the outside of the entire electronic device 10, and at the same time, a portion of the energy of the fourth first reflected wave 430 will be reflected on the second interface 112 to form a fifth first reflected wave 430 emitted from the second interface 112 to the first interface 111. According to the above transmission law, additional first sub-transmitted waves 420 and first reflected waves 430 can also be formed, so the number of first reflected waves 430 and first sub-transmitted waves 420 is multiple.

[0032] The first transmission wave 400 is adjacent to the first first reflected wave 430. The phase delay A generated when the first first reflected wave 430 reaches the first interface 111 from the second interface 112 is 180°. The phase delay A generated when the second first reflected wave 430 reaches the second interface 112 from the first interface 111 is also 180°. The phase delay A generated when the third first reflected wave 430 reaches the first interface 111 from the second interface 112 is 180°. The phase delay A generated when the fourth first reflected wave 430 reaches the second interface 112 from the first interface 111 is also 180°. Therefore, the phase delays A generated when the first reflected wave 430 reaches the first interface 111 from the second interface 112 and reaches the second interface 112 from the first interface 111 are 180°, respectively. Therefore, the first main transmitted wave 410 and the first first sub-transmitted wave 420 are separated by two first reflected waves 430 to generate a phase delay of 360°, that is, a phase difference of 360°, so that the phases of the first main transmitted wave 410 and the first first sub-transmitted wave 420 are the same. Moreover, any two adjacent first sub-transmitted waves 420 are also separated by two first reflected waves 430 to generate a phase delay of 360°, that is, a phase difference of 360°, so that the phases of any two adjacent first sub-transmitted waves 420 are the same. It can be further concluded that the phase difference between the first main transmitted wave 410 and the first sub-transmitted wave 420 is an integer multiple of 360°.

[0033] In view of the fact that the phase difference between the first main transmission wave 410 and the first sub-transmission wave 420 is an integer multiple of 360°, that is, the phases of the first main transmission wave 410 and the first sub-transmission wave 420 are the same. Therefore, in the process of the first main transmission wave 410 and the first sub-transmission wave 420 being transmitted outside the electronic device 10, constructive positive interference will be generated between each other, thereby improving the penetration performance of the electromagnetic wave, and the energy of the electromagnetic wave radiated from the antenna body 200 to the outside of the electronic device 10 is increased to improve the radiation performance. Prevent the first main transmission wave 410 and the first sub-transmission wave 420 from generating negative interference due to different phases, and then avoid the electromagnetic wave radiated from the antenna body 200 to the outside of the electronic device 10 from generating energy loss due to negative interference to weaken the penetration performance and radiation performance of the electromagnetic wave.

[0034] In some embodiments, the distance d between the first interface 111 and the second interface 112 can be understood as the thickness of the cover 110. The angle between the emission direction of the electromagnetic wave generated by the antenna body 200 and the normal direction of the first interface 111 is θ. Considering that the equivalent relative dielectric constant of the cover 110 can be recorded as ε, the above phase difference A can be calculated by the following formula: A = 2πd / (λ g *cosθ),λ g =3*10 8 / (f*ε1 / 2 ), where f is the frequency of the electromagnetic wave emitted by the antenna body 200. Therefore, on the one hand, the value of A can be determined by reasonably setting the value of d, that is, changing the thickness of the covering body 110 to satisfy the phase difference A of 180°. In other words, the value of the phase difference A can be determined starting from the structure of the covering body 110. On the other hand, the value of ε can also be reasonably set, that is, changing the equivalent relative dielectric constant of the covering body 110 to satisfy the phase difference A of 180°. In other words, the value of the phase difference A can be determined starting from the material of the covering body 110.

[0035] See also Figure 1 , Figure 2 and Figure 4, the angle between the emission direction of the electromagnetic wave emitted by the antenna body 200 and the normal of the first interface 111 is θ. After being reflected by the first interface 111 and the third interface 311, the electromagnetic wave can form a second transmission wave 500 emitted from the third interface 311 to the first interface 111. Before being reflected between the first interface 111 and the third interface 311, a part of the second transmission wave 500 penetrates the first interface 111 to form a second main transmission wave 510. The second main transmission wave 510 is essentially the electromagnetic wave radiated by the antenna body 200 to the inside of the covering body 110. When the second transmission wave 500 reaches the first interface 111, a portion of the energy of the second transmission wave 500 will penetrate the first interface 111 to form a second main transmission wave 510 radiated into the covering body 110, and another portion of the energy of the second transmission wave 500 will be reflected on the first interface 111 to form a first second reflected wave 530 emitted from the first interface 111 to the third interface 311, and the first second reflected wave 530 will generate a second second reflected wave 530 emitted from the third interface 311 to the first interface 111 on the third interface 311. A portion of the energy of the second second reflected wave 530 will penetrate the first interface 111 to form a first second sub-transmission wave 520 radiated into the covering body 110, and at the same time, a portion of the energy of the second second reflected wave 530 will be reflected on the first interface 111 to form a third second reflected wave 530 emitted from the first interface 111 to the third interface 311. The third second reflected wave 530 will be reflected on the third interface 311 to generate a fourth second reflected wave 530 emitted from the third interface 311 to the first interface 111, and a portion of the energy of the fourth second reflected wave 530 will penetrate the first interface 111 to form a second second sub-transmitted wave 520 radiated to the entire covering body 110. At the same time, a portion of the energy of the fourth second reflected wave 530 will be reflected on the first interface 111 to form a fifth second reflected wave 530 emitted from the first interface 111 to the third interface 311. According to the above transmission law, additional second sub-transmitted waves 520 and second reflected waves 530 can also be formed, so the number of second reflected waves 530 and second sub-transmitted waves 520 is multiple.

[0036] The second transmission wave 500 is adjacent to the first second reflected wave 530. The phase delay B generated when the first second reflected wave 530 reaches the third interface 311 from the first interface 111 is 90°. The phase delay B generated when the second second reflected wave 530 reaches the first interface 111 from the third interface 311 is also 90°. The phase delay B generated when the third second reflected wave 530 reaches the third interface 311 from the first interface 111 is 90°. The phase delay B generated when the fourth second reflected wave 530 reaches the first interface 111 from the third interface 311 is also 90°. By analogy, the phase delays B generated when the second reflected wave 530 reaches the first interface 111 from the third interface 311 and reaches the third interface 311 from the first interface 111 are 90° respectively. Therefore, there are two second reflected waves 530 between the second main transmitted wave 510 and the first second sub-transmitted wave 520. At the same time, considering that the third interface 311 is the surface of the metal wiring layer, that is, the third interface 311 is a metal surface, the electromagnetic wave will produce a phase difference of 180° after being reflected by the metal, that is, the first second reflected wave 530 will also produce a phase delay of 180° in the process of forming the second second reflected wave 530 after being reflected on the third interface 311. Therefore, a phase delay of 90°*2+180°=360° is generated between the second main transmitted wave 510 and the first second sub-transmitted wave 520, that is, a phase difference of 360°. In this way, the second main transmitted wave 510 and the first second sub-transmitted wave 520 can be ensured to be the same in phase. Moreover, any two adjacent second sub-transmitted waves 520 are also separated by two second reflected waves 530, and the second reflected waves 530 will generate a phase delay of 180° during the reflection process of the third interface 311, so any two adjacent second sub-transmitted waves 520 also generate a phase delay of 90°*2+180°=360°, that is, a phase difference of 360°, so that the phases between any two adjacent second sub-transmitted waves 520 can be guaranteed to be the same. It can be further concluded that the phase difference between the second main transmitted wave 510 and the second sub-transmitted wave 520 is an integer multiple of 360°.

[0037] In view of the fact that the phase difference between the second main transmission wave 510 and the second sub-transmission wave 520 is an integer multiple of 360°, that is, the phases of the second main transmission wave 510 and the second sub-transmission wave 520 are the same. Therefore, in the process of the second main transmission wave 510 and the second sub-transmission wave 520 being transmitted into the covering body 110, constructive positive interference will be generated between each other, thereby increasing the energy of the electromagnetic wave radiated from the antenna body 200 into the covering body 110 to improve the radiation performance, thereby greatly improving the antenna radiation field pattern. Prevent the second main transmission wave 510 and the second sub-transmission wave 520 from generating negative interference due to the different phases, thereby preventing the electromagnetic wave radiated from the antenna body 200 into the covering body 110 from affecting the improvement of the antenna radiation field pattern.

[0038] In some embodiments, the distance between the first interface 111 and the portion of the third interface 311 not covered by the antenna body 200 is D, the angle between the emission direction of the electromagnetic wave generated by the antenna body 200 and the normal direction of the first interface 111 is θ, and the wavelength of the electromagnetic wave is λ 0 The above phase difference B can be calculated by the following formula: B = 2πD / (λ 0 *cosθ). Therefore, the value of D can be changed by reasonably setting the thickness d of the covering body 110, so that the value of D can satisfy the phase difference B of 90°. The value of D is usually about 0.6 mm.

[0039] Therefore, in order to improve the radiation performance of the antenna body 200 and improve the antenna radiation field pattern, the first main transmission wave 410 and the first sub-transmission wave 420 must be in phase with each other, and the second main transmission wave 510 and the second sub-transmission wave 520 must be in phase with each other, and the above requirements can be met by adopting an unequal thickness design for the cover 110. In fact, if the electronic device volume remains unchanged and the cover 110 adopts an equal thickness design, the above two formulas A=2πd / (λg*cosθ) and B=2πD / (λ0*cosθ) cannot be established at the same time, and other electronic components will not have enough installation space reserved. If the cover 110 adopts an equal thickness design mode and the two formulas A=2πd / (λg*cosθ) and B=2πD / (λ0*cosθ) are established, the distance between the cover 110 and the circuit board 310 will be enlarged, thereby increasing the volume of the electronic device. Therefore, the two conditions of satisfying the above two formulas and keeping the electronic device volume constant cannot be achieved at the same time, and the realization of one condition is at the expense of the other condition. However, by adopting a unequal thickness design for the cover body 110, the above two formulas can be satisfied and the volume of the electronic device 10 can be kept constant.

[0040] In some embodiments, the housing 100 further includes a rear shell 120, a middle frame 130 and a cover 140, the cover 140 and the rear shell 120 are spaced apart in the thickness direction of the electronic device 10, and the middle frame 130 is connected between the rear shell 120 and the cover 140. The middle frame 130 can be integrated with the rear shell 120. The cover 140 can be combined with a display module (not shown). The circuit board 310 is located in the space between the rear shell 120 and the cover 140, the cover body 310 is connected to the rear shell 120, and the rear shell 120 has an inner surface 121 and an outer surface 122, the inner surface 121 and the first interface 111 are both arranged toward the circuit board 310, the outer surface 122 and the second interface 112 are both arranged away from the circuit board 310, and the inner surface 121 is flush with the part of the first interface 111 located on the first cover portion 113. Alternatively, the first interface 111 is further away from the outer surface 122 relative to the inner surface 121 along the thickness direction of the housing 100. In other words, the first interface 111 is protruding relative to the inner surface 121. In this way, it can be ensured that the value of D meets the requirement that the second main transmitted wave 510 and the second sub-transmitted wave 520 are in the same phase within the limited installation space determined by the limited volume of the electronic device 10, and the entire covering body 110 has sufficient structural strength. The second interface 112 is further away from the inner surface 121 relative to the outer surface 122 along the thickness direction of the housing 100. On the one hand, it can be ensured that the value of d meets the requirement that the first main transmitted wave 410 and the first sub-transmitted wave 420 are in the same phase within the limited volume of the electronic device 10, and on the other hand, it also makes the entire covering body 110 have sufficient structural strength.

[0041] If a mode of providing a wave-transmitting structure in the housing 100 to improve the radiation performance of the antenna body 200 is adopted, the wave-transmitting structure of this mode will occupy the space in the housing 100, thereby squeezing the installation space of other components of the electronic device 10, which will change the stacking structure of various components in the electronic device 10, and will also increase the total volume and total weight of the electronic device 10, which is not conducive to the thin and light design of the electronic device 10. At the same time, the wave-transmitting structure will increase the assembly process of the electronic device 10, thereby increasing the difficulty of assembling the electronic device 10, and the addition of the wave-transmitting structure itself will also increase the manufacturing cost of the electronic device 10. Furthermore, the wave-transmitting structure only improves the transmittance of electromagnetic waves through the housing 100, and this transmittance can be understood as "gross transmittance".

[0042] The electronic device 10 of the above embodiment does not need to be provided with additional components. It only needs to change the structure (thickness) or material of the cover body 110 to improve the radiation performance of the entire antenna body 200. At the same time, it is avoided to set additional components to increase the assembly difficulty and manufacturing cost of the electronic device 10, so as to prevent the volume and weight of the electronic device 10 from being too large, that is, the manufacturing cost of the electronic device 10 can be reduced on the basis of a light and thin setting. In fact, the antenna body 200 corresponds to the cover body 110 for setting the camera 600. The antenna can be similar to the structure of a "lens antenna", so that the antenna body 200 and other components can reasonably use the installation space of the cover body 110 accessories to ensure that the electronic device 10 has a smaller volume. It is worth mentioning that the electronic device 10 of the above embodiment can prevent the first main transmission wave 410 and the second sub-transmission wave 420 that have passed through the cover body 110 from generating energy loss due to interference, thereby increasing the "net transmittance" of the electromagnetic wave to improve the radiation performance.

[0043] Through simulation experiment analysis, see Figure 5 The 3D radiation pattern of the antenna body 200 of the electronic device 10 in the above embodiment is relatively more rounded and full, and the overall energy distribution is relatively uniform and concentrated, so the transmission performance of the electromagnetic wave generated by the antenna body 200 is greatly improved. Figure 6 The 3D radiation pattern of the antenna body 200 of the conventional electronic device 10 is rough and uneven, thereby affecting the 3D radiation pattern and the transmission performance of electromagnetic waves.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An electronic device, characterized in that: include: The housing comprises a covering body, wherein the covering body has a first interface and a second interface which are arranged at intervals in a thickness direction and have a non-uniform spacing; A carrier board having a third interface disposed toward the first interface; as well as The antenna body is arranged on the third interface and generates a first transmission wave and a second transmission wave, wherein the first transmission wave starts from the first interface and passes through the second interface to form a first main transmission wave, and the first transmission wave is reflected between the first interface and the second interface to form a first sub-transmission wave that passes through the second interface, and the second transmission wave starts from the third interface and passes through the first interface to form a second main transmission wave, and the second transmission wave is reflected between the first interface and the third interface to form a second sub-transmission wave that passes through the first interface, and the first main transmission wave and the first sub-transmission wave have the same phase, and the second main transmission wave and the second sub-transmission wave have the same phase.

2. The electronic device according to claim 1, characterized in that: The covering body includes a first covering portion and a second covering portion connected to each other, the thickness of the second covering portion is greater than the thickness of the first covering portion, and the second covering portion is spaced apart from the antenna body.

3. The electronic device according to claim 2, characterized in that: The orthographic projection of the second covering portion on the carrier covers the antenna body.

4. The electronic device according to claim 1, characterized in that: The same first transmission wave forms a plurality of first reflected waves between the first interface and the second interface, and the phase delay A generated by the first reflected waves from the second interface to the first interface and from the first interface to the second interface is 180° respectively.

5. The electronic device according to claim 3, characterized in that: The distance between the first interface and the second interface is d, the frequency of the electromagnetic wave generated by the antenna body is f, and the angle between the emission direction and the normal of the first interface is θ, and the equivalent relative dielectric constant of the covering body is ε, where A=2πd / (λ g *cosθ), and λ g =3*10 8 / (f*ε 1 / 2 ).

6. The electronic device according to claim 1, characterized in that: The same second transmission wave forms a plurality of second reflected waves between the first interface and the third interface, and the phase delays B generated by the second reflected waves from the third interface to the first interface and from the first interface to the third interface are 90° respectively.

7. The electronic device according to claim 6, characterized in that: The distance between the part of the third interface not covered by the antenna body and the first interface is D, the wavelength of the electromagnetic wave generated by the antenna body is λ0 and the angle between its emission direction and the normal of the first interface is θ, where B=2πD / (λ0*cosθ).

8. The electronic device according to claim 1, characterized in that: The material used for the covering body includes glass.

9. The electronic device according to claim 8, characterized in that: It also includes a camera, which is arranged on the covering body.

10. The electronic device according to claim 8, characterized in that: The shell also includes a rear shell connected to the covering body, the rear shell having an inner surface and an outer surface, the inner surface and the first interface are both arranged toward the carrier, the outer surface and the second interface are both arranged away from the carrier, the inner surface is flush with a portion of the first interface, or the first interface is further away from the outer surface relative to the inner surface along the thickness direction of the shell.

11. The electronic device according to claim 10, characterized in that: The second interface is further away from the inner surface than the outer surface along the thickness direction of the shell.

12. The electronic device according to claim 1, characterized in that: The carrier board includes a circuit board.

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