Middle frame assembly and electronic equipment

Abstract

The invention relates to a middle frame assembly and electronic equipment, and the middle frame assembly comprises a frame body which comprises a first side and a second side which are opposite to each other; the frame body is provided with a first side and a second side, at least one part of the plurality of antennas is respectively arranged on the first side and the second side, the plurality of antennas radiate and / or receive first frequency band signals, and the plurality of antennas are arranged around the frame body so that antenna patterns of the plurality of antennas are uniformly distributed. According to the invention, the plurality of antennas are respectively arranged on the first side and the second side which are opposite to each other on the frame body, the signal radiation capability and the signal receiving capability of the antennas are enhanced by increasing the number of the antennas, the isolation of the antennas is improved by designing the arrangement positions of the plurality of antennas, and the overall transmission performance of the antennas is improved. The signal receiving capability of the electronic equipment in a weak signal environment is enhanced, the signal transmission speed and downloading speed of the electronic equipment are improved, and the signal network use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna manufacturing technology, and in particular to a middle frame assembly and electronic equipment. Background Art

[0002] With the rapid development of mobile communication technology, electronic devices such as mobile phones and tablets have become indispensable in people's daily lives. However, in weak network environments such as underground garages and elevators, electronic devices often suffer from problems such as slow download speeds and weak signal strength. Summary of the Invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a middle frame assembly and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a middle frame assembly is provided, comprising: a frame body, the frame body comprising a first side and a second side opposite to each other; a plurality of antennas, at least a portion of the plurality of antennas being respectively arranged on the first side and the second side, the plurality of antennas radiating and / or receiving a first frequency band signal, wherein the plurality of antennas are arranged around the frame body so that the antenna radiation patterns of the plurality of antennas are evenly distributed.

[0005] In some embodiments, the antenna includes a first antenna and a second antenna, and the first antenna and the second antenna are respectively arranged at the two ends of the first side; the antenna includes a third antenna and a fourth antenna, and the third antenna and the fourth antenna are respectively arranged at the two ends of the second side.

[0006] In some embodiments, the first antenna includes a first radiator and a parasitic radiator, and the first radiator and the parasitic radiator are arranged with a gap between them, wherein the first radiator is provided with a feeding point and a grounding point, and compared with the feeding point, the grounding point is arranged away from the parasitic radiator.

[0007] In some embodiments, the first radiator includes a first radiating portion and a second radiating portion connected to each other, and the frame includes a third side connected to the first side; the first radiating portion is arranged on the first side, and the second radiating portion is arranged on the third side.

[0008] In some embodiments, a parasitic radiator is disposed on the first side, and compared to the first radiating portion, the parasitic radiator is disposed farther away from the third side.

[0009] In some embodiments, the feeding point is located at an end of the first side close to the third side, and the grounding point is located at an end of the first radiating portion.

[0010] In some embodiments, the first antenna is located at the bottom of the frame.

[0011] In some embodiments, the first antenna includes an adjustment circuit, which is electrically connected to the first radiator and changes the inductance or capacitance of the first antenna. The adjustment circuit is arranged on a side of the feed point close to the parasitic radiator.

[0012] In some embodiments, the length of the parasitic radiator is 35 mm to 45 mm.

[0013] In some embodiments, the current of the parasitic radiator is uniformly distributed.

[0014] In some embodiments, the first antenna transmits and receives signals in a first frequency band; the second antenna receives signals in the first frequency band; the third antenna transmits and receives signals in the first frequency band; and the fourth antenna receives signals in the first frequency band.

[0015] In some embodiments, the frequency of the first frequency band signal is 600 Hz to 1000 Hz.

[0016] In some embodiments, the multiple antennas are a multiple-input multiple-output antenna array.

[0017] In some embodiments, the middle frame assembly is rectangular, and the first side and the second side are long sides of the rectangle.

[0018] According to a second aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: the middle frame assembly described in any one of the first aspects.

[0019] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure provides multiple antennas on the first and second opposite sides of the frame, thereby enhancing the first-band signal radiation capability and the first-band signal receiving capability of the antenna by increasing the number of antennas, and improving the isolation of the antenna by designing the setting positions of the multiple antennas, thereby improving the overall transmission performance of the antenna, enhancing the signal reception capability of the electronic device in a weak signal environment, improving the signal transmission speed and download rate of the electronic device, and improving the user's signal network usage experience.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] Figure 1The figure is a schematic structural diagram of a middle frame assembly according to an exemplary embodiment.

[0023] Figure 2 FIG. 1 is a schematic structural diagram of a first antenna of a middle frame assembly according to an exemplary embodiment.

[0024] Figure 3 is a diagram showing the radiation efficiency of a first antenna according to a related embodiment.

[0025] Figure 4 is a diagram showing radiation efficiency of a first antenna according to an exemplary embodiment.

[0026] Figure 5 is a diagram showing radiation efficiency of a first antenna according to an exemplary embodiment. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0028] In related technologies, electronic devices usually have only two low-frequency antennas. In weak network environments such as underground garages and elevators, the low-frequency download rate of electronic devices is low and the signal strength is weak.

[0029] In order to solve the above technical problems, according to an embodiment of the present disclosure, a middle frame assembly and an electronic device are provided, wherein the middle frame assembly includes: a frame body, the frame body including a first side and a second side relative to each other; a plurality of antennas, at least a portion of the plurality of antennas are respectively arranged on the first side and the second side, the plurality of antennas radiate and / or receive first frequency band signals, wherein the plurality of antennas are arranged around the frame body so that the antenna radiation patterns of the plurality of antennas are evenly distributed.

[0030] The present invention provides multiple antennas on the first and second opposite sides of the frame, thereby enhancing the signal radiation capability and signal receiving capability of the antenna by increasing the number of antennas, and improving the isolation of the antenna by designing the setting positions of the multiple antennas, thereby improving the overall transmission performance of the antenna, enhancing the signal receiving capability of the electronic device in a weak signal environment, improving the signal transmission speed and download rate of the electronic device, and improving the user's signal network usage experience.

[0031] It can be understood that the middle frame assembly involved in the present disclosure can be applicable to any terminal listed below.

[0032] It is understandable that the terminal involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: smart phones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0033] Figure 1 The figure is a schematic structural diagram of a middle frame assembly according to an exemplary embodiment.

[0034] In some embodiments, as Figure 1 As shown, the middle frame assembly includes: a frame body 100 and multiple antennas.

[0035] The frame 100 can be the main body of the middle frame assembly, and can provide an installation location and fixation for other components set in the middle frame assembly. Multiple antennas can be used to radiate and receive frequency band signals to achieve wireless data transmission. Multiple antennas can receive the first frequency band, and multiple antennas can radiate the first frequency band.

[0036] The housing 100 may include a first side 101 and a second side 102. At least a portion of the plurality of antennas may be disposed on the first side 101 and the second side 102, respectively. For example, one antenna of the plurality of antennas may be disposed on the first side 101, and two antennas of the plurality of antennas may be disposed on the second side 102. Alternatively, two antennas of the plurality of antennas may be disposed on the first side 101, and two antennas of the plurality of antennas may be disposed on the second side 102.

[0037] For example, when the frame 100 is a middle frame of an electronic device, the first side 101 may be a left side of the frame 100 of the electronic device, and the second side 102 may be a right side of the frame 100 of the electronic device.

[0038] The multiple antennas are arranged around the frame 100 so that the antenna patterns of the multiple antennas are evenly distributed, so that the electronic device can have good signal reception and radiation capabilities in all directions.

[0039] It can also increase the spatial distance between antennas, reduce the correlation between antennas, enhance the isolation between antennas, improve the overall transmission performance of the system, and enable antennas to better receive and transmit signals.

[0040] The present disclosure reduces the correlation of antennas and improves the isolation of antennas by respectively arranging multiple antennas on the first side 101 and the second side 102 relative to each other on the frame 100. By increasing the number of antennas, the signal radiation capability and signal receiving capability of the antenna are enhanced, the overall transmission performance of the antenna is improved, the signal receiving capability of electronic devices in weak signal environments is enhanced, the signal transmission speed and download rate of electronic devices are improved, and the user's signal network usage experience is improved.

[0041] In some embodiments, at least a portion of the frame 100 may be metal, and at least a portion of the metal portion may serve as the antenna's radiator. The antenna may be a slot-16 antenna. The slot-16 antenna can be used in electronic devices with all-metal housings, thereby protecting the antenna assembly from the shielding effect of the metal housing, creating a better radiation environment and improving the radiation performance of the antenna assembly. The slot-16 antenna also has advantages such as a strong structure, simple and compact design, ease of processing, convenient power feeding, and simple installation.

[0042] Figure 2 FIG. 1 is a schematic structural diagram of a first antenna of a middle frame assembly according to an exemplary embodiment.

[0043] In some embodiments, as Figure 1 and Figure 2 As shown, the antenna may include a first antenna 10, which may be used to transmit and receive signals in a first frequency band. The first antenna 10 may include a first radiator 11 and a parasitic radiator 12, and the first radiator 11 and the parasitic radiator 12 may be arranged with a gap 16 therebetween. The first radiator 11 may be provided with a feeding point 13 and a grounding point 14, and the grounding point 14 may be arranged farther away from the parasitic radiator 12 than the feeding point 13.

[0044] The first radiator 11 may be a main radiator, and the feed source may feed radiation current from the feed point 13 into the main radiator, and the radiation current changes on the first radiator 11 to generate electromagnetic waves for radiation.

[0045] The parasitic radiator 12 can be a parasitic branch. When there is a radiation current on the first radiator 11, a corresponding induced current can be generated on the parasitic radiator 12 through the current induction effect. The induced current on the parasitic radiator 12 changes correspondingly with the radiation current on the first radiator 11, so that the first radiator 11 and the parasitic radiator 12 can cooperate to radiate, thereby improving the radiation performance of the first antenna 10, improving the overall transmission performance of the antenna, enhancing the signal reception capability of the electronic device in a weak signal environment, improving the signal transmission speed and download rate of the electronic device, and improving the user's signal network usage experience.

[0046] Furthermore, the addition of the parasitic radiator 12 can increase the radiation area of ​​the first antenna 10, thereby improving the antenna efficiency of the first antenna 10 and the antenna's receiving capability in a poor signal environment. At the same time, the current on the antenna is dispersed over a larger radiation area, thereby reducing the occurrence of current-intensive points on the first antenna 10 and lowering the specific absorption ratio (SAR) of the electronic device, thereby helping to reduce the impact of signal radiation on the human body.

[0047] In some embodiments, as Figure 1 As shown, the first antenna 10 can cover the radiation of low-frequency signals and medium-high-frequency signals, and switch the matching devices through the switch connected to the ground point 14 to achieve frequency band switching of the first antenna 10.

[0048] In some embodiments, as Figure 1 As shown, the antenna may include a second antenna 20, and the second antenna 20 may be used to receive signals in the first frequency band.

[0049] The first antenna 10 and the second antenna 20 can be respectively arranged at the two ends of the first side 101, so that the spatial distance between the first antenna 10 and the second antenna 20 is increased, thereby improving the isolation between the first antenna 10 and the second antenna 20 and improving the overall transmission capacity of the first antenna 10 and the second antenna 20.

[0050] The first antenna 10 and the second antenna 20 are arranged at both ends of the first side 101 , and the first antenna 10 and the second antenna 20 are arranged at a position where the distance from the end of the first side 101 or the corner of the frame 100 is less than 15% of the entire length of the first side 101 .

[0051] For example, the first antenna 10 and the second antenna 20 may be disposed at positions where the distance from the end of the first side 101 or the corner of the frame 100 is 10% of the entire length of the first side 101 .

[0052] In addition, the first antenna 10 and the second antenna 20 are respectively arranged at the two ends of the first side 101, so that the first antenna 10 and the second antenna 20 can respectively receive signals from different directions, thereby making the overall radiation field strength distribution of the antenna system more uniform, which is beneficial to improving the user experience.

[0053] For example, in a Multiple-Input Multiple-Output (MIMO) communication system, when multiple antennas are placed in close proximity, correlation exists between the received signals from each antenna. The greater the correlation, the lower the independence between the signal channels, and the more significant the degradation of the overall system transmission performance.

[0054] By respectively arranging the first antenna 10 and the second antenna 20 at the two ends of the first side 101, the first antenna 10 and the second antenna 20 can better receive signals, and at the same time, the mutual winding between the first antenna 10 and the second antenna 20 can be reduced, the isolation between the first antenna 10 and the second antenna 20 can be improved, and the overall transmission capability of the antenna is improved, thereby enhancing the signal reception capability of the electronic device in a weak signal environment, improving the signal transmission speed and download rate of the electronic device, and improving the user's signal network usage experience.

[0055] In some embodiments, as Figure 1 As shown, the antenna may include a third antenna 30 and a fourth antenna 40 , which can receive first frequency band signals. The third antenna 30 and the fourth antenna 40 are respectively arranged at two ends of the second side 102 .

[0056] The third antenna 30 and the fourth antenna 40 are arranged at both ends of the second side 102 , which can be a position where the distance between the third antenna 30 and the fourth antenna 40 and the end of the second side 102 or the corner of the frame 100 is less than 15% of the overall length of the second side 102 .

[0057] For example, the third antenna 30 and the fourth antenna 40 may be disposed at positions at a distance from an end of the second side 102 or a corner of the frame body 100 that is 10% of the entire length of the second side 102 .

[0058] By arranging the first antenna 10 and the second antenna 20 on the first side 101 and the third antenna 30 and the fourth antenna 40 on the second side 102, the spatial distance between the first antenna 10 and the second antenna 20 and the third antenna 30 and the fourth antenna 40 can be increased, thereby improving the isolation between the first antenna 10 and the second antenna 20 and the third antenna 30 and the fourth antenna 40, and improving the overall transmission capacity of the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40.

[0059] The third antenna 30 and the fourth antenna 40 can be respectively arranged at the two ends of the second side 102, so that the spatial distance between the third antenna 30 and the fourth antenna 40 is increased, thereby improving the isolation between the third antenna 30 and the fourth antenna 40, and improving the overall transmission capability of the third antenna 30 and the fourth antenna 40.

[0060] In addition, the third antenna 30 and the fourth antenna 40 are respectively arranged at the two ends of the second side 102, so that the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40 can respectively receive signals in different directions, thereby making the overall directional pattern radiation field strength distribution of the antenna system more uniform, making the signal transmission capability of the electronic device in all directions in space close, which is beneficial to improving the user experience.

[0061] For example, when the frame is rectangular, the first antenna 10 and the second antenna 20 can be arranged at both ends of the first side 101 serving as the long side, and the third antenna 30 and the fourth antenna 40 can be arranged at both ends of the second side 102 serving as the long side, thereby reducing the correlation among the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40 and improving the isolation among the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40.

[0062] In MIMO communication systems, when multiple antennas are placed in close proximity, correlation exists between the received signals from each antenna. The greater the correlation, the lower the independence between the various signal channels, and the more significant the degradation of the overall system transmission performance.

[0063] By arranging the first antenna 10 and the second antenna 20 on the first side 101 and arranging the third antenna 30 and the fourth antenna 40 at the two ends of the second side 102 respectively, the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40 can better receive signals, and at the same time, the mutual winding between the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40 can be reduced, and the isolation of the first antenna 10, the second antenna 20, the third antenna 30 and the fourth antenna 40 can be improved, thereby improving the overall transmission capacity of the antenna, enhancing the signal reception capability of the electronic device in a weak signal environment, improving the signal transmission speed and download rate of the electronic device, and improving the user's signal network usage experience.

[0064] The present disclosure provides a first antenna 10, a second antenna 20, a third antenna 30, and a fourth antenna 40 on a first side 101 and a second side 102 opposite to each other on a frame 100, respectively. The first antenna 10 and the second antenna 20 are provided on the first side 101, and the third antenna 30 and the fourth antenna 40 are provided at both ends of the second side 102, respectively. This reduces the correlation among the first antenna 10, the second antenna 20, the third antenna 30, and the fourth antenna 40, improves the isolation between the first antenna 10, the second antenna 20, the third antenna 30, and the fourth antenna 40, strengthens the signal radiation capability and signal reception capability of the antenna by increasing the number of antennas, improves the overall transmission performance of the antenna, enhances the signal reception capability of the electronic device in a weak signal environment, improves the signal transmission speed and download rate of the electronic device, and improves the user's signal network usage experience.

[0065] In some embodiments, as Figure 2 As shown, the first antenna 10 may include an adjustment circuit 15 , and the adjustment circuit 15 may be disposed on a side of the feed point 13 close to the parasitic radiator 12 .

[0066] The regulating circuit 15 may include a capacitor and an inductor, or may include only one of the capacitor and the inductor.

[0067] Setting a capacitor in the adjustment circuit 15 can increase the capacitance of the first radiator 11, and setting an inductor in the adjustment circuit 15 can increase the inductance of the first radiator 11. By changing the capacitance and inductance of the first radiator 11, the position of the curve in the Smith chart of the first antenna 10 can be adjusted, so that the first radiator 11 can better match the first frequency band signal, improve the antenna efficiency of the first antenna 10, improve the overall transmission capacity of the antenna, enhance the signal reception ability of the electronic device in a weak signal environment, improve the signal transmission speed and download rate of the electronic device, and improve the user's signal network usage experience.

[0068] For example, Figure 1 As shown, the circuit 15 can be adjusted to increase the inductance of the first radiator 11 by adding inductance, thereby increasing the equivalent radiation length of the first radiator 11, so that the first antenna 10 can better match the first frequency band signal, thereby improving the overall transmission capability of the antenna, enhancing the signal receiving capability of electronic devices in weak signal environments, improving the signal transmission speed and download rate of electronic devices, and improving the user's signal network usage experience.

[0069] In some embodiments, as Figure 2 As shown, the length of the parasitic radiator 12 is 35 mm to 45 mm.

[0070] Regarding the current distribution of the parasitic radiator 12 , the shorter the parasitic radiator 12 , the more concentrated the current distribution is. This current concentration easily generates a current strong point with strong local radiation, resulting in a higher local radiation intensity, thereby increasing the SAR value of the first antenna 10 .

[0071] The longer the parasitic radiator 12, the more dispersed the current distribution is, and the current can be dispersed in a larger radiator range. After the current is dispersed, the current concentration at a certain location to produce a strong current point will be reduced, thereby reducing the SAR value of the first antenna 10, which helps to reduce the impact of signal radiation on the human body.

[0072] By setting the length of the parasitic radiator 12 to within the range of 35 mm to 45 mm, the radiation area of ​​the parasitic radiator 12 can be increased, thereby improving the antenna efficiency of the first antenna 10 and improving the antenna's receiving capability in an environment with poor signals. At the same time, the current on the antenna is dispersed over a larger radiator, reducing the occurrence of current-intensive strong points on the first antenna 10, reducing the SAR value of the electronic device, and helping to reduce the impact of signal radiation on the human body.

[0073] Figure 3 For an embodiment in which the length of the parasitic radiator 12 is 3 mm, Figure 4 For an embodiment in which the length of the parasitic radiator 12 is 18 mm, Figure 5 This is an embodiment in which the length of a human hair is 30. The first antenna 10 is a low-frequency antenna.

[0074] Figure 3 is a diagram showing the radiation efficiency of a first antenna according to a related embodiment. Figure 4 is a diagram showing radiation efficiency of a first antenna according to an exemplary embodiment. Figure 5 is a diagram showing radiation efficiency of a first antenna according to an exemplary embodiment.

[0075] In some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown in the figure, with the increase of parasitic length, the low-frequency efficiency is improved to varying degrees, especially in the B5 and B8 bands, with an improvement of more than 1.5dB.

[0076] Moreover, for an antenna array composed of multiple low-frequency antennas, the low-frequency reception performance of the antenna array is positively correlated with the reception capability of a single antenna. The stronger the reception capability of a single antenna, the stronger the overall reception capability of the multiple antennas.

[0077] In some embodiments, the current of the parasitic radiator 12 is uniformly distributed.

[0078] Regarding the current distribution of the parasitic radiator 12 , the shorter the parasitic radiator 12 , the more concentrated the current distribution is. This current concentration easily generates a current strong point with strong local radiation, resulting in a higher local radiation intensity, thereby increasing the SAR value of the first antenna 10 .

[0079] The longer the parasitic radiator 12, the more dispersed the current distribution is, and the current can be dispersed in a larger radiator range. After the current is dispersed, the current concentration at a certain location to produce a strong current point will be reduced, thereby reducing the SAR value of the first antenna 10, which helps to reduce the impact of signal radiation on the human body.

[0080] In some embodiments, as Figure 2 As shown, the first radiator 11 may include a first radiating portion 111 and a second radiating portion 112 , the frame 100 may include a third side 103 connected to the first side 101 , the first radiating portion 111 may be arranged on the first side 101 , and the second radiating portion 112 may be arranged on the third side 103 .

[0081] The first radiating part 111 is set on the first side 101, and the second sound-emitting part is set on the third side 103, so that the first radiator 11 is set across the corner. The radiation length of the first radiator 11 can be increased, so that the first antenna 10 can better match the first frequency band signal. By enhancing the receiving capability of the first antenna 10, the overall transmission capability of the antenna is enhanced, the signal reception capability of the electronic device in a weak signal environment is enhanced, the signal transmission speed and download rate of the electronic device are improved, and the user's signal network usage experience is improved.

[0082] In some embodiments, as Figure 2 As shown, the feed point 13 is located at an end of the first side 101 close to the third side 103 , and the grounding point 14 is located at an end of the first radiating portion 111 .

[0083] By arranging the feed point 13 at the corner where the first side 101 and the third side 103 meet, the current fed from the feed point 13 into the first radiator 11 can better flow to the first radiator 11 located on the first side 101 and the parasitic radiator 12 located on the third side 103, thereby generating a radiation current. This improves the radiation effect of the first antenna 10 and enhances the receiving capability of the first antenna 10, thereby enhancing the overall transmission capability of the antenna, the signal reception capability of the electronic device in weak signal environments, and the signal transmission and download speeds of the electronic device, thereby improving the user's signal network experience.

[0084] In some embodiments, the first antenna 10 can transmit and receive first frequency band signals, the second antenna 20 can receive first frequency band signals, the third antenna 30 can transmit and receive first frequency band signals, and the fourth antenna 40 can receive first frequency band signals.

[0085] By using four antennas for receiving the first frequency band signal and using two antennas for transmitting the first frequency band signal, a multiple-input and multiple-output solution for the first frequency band signal is implemented, so that the antenna has extremely high spectrum utilization efficiency. On the basis of fully utilizing the existing spectrum resources, the reliability and effectiveness gains are obtained by utilizing spatial resources, which can effectively improve the spectrum efficiency.

[0086] In some embodiments, the first frequency band signal can be a low-frequency band. Generally speaking, in scenarios such as underground garages and elevators, electronic devices have low low-frequency download rates and weak signal strength. The present disclosure addresses this issue by providing multiple antennas with high radiation efficiency that cover the low-frequency band. For example, the first frequency band signal frequency can be between 600 Hz and 1000 Hz.

[0087] In some embodiments, the multiple antennas may be a multiple-input multiple-output antenna array. For example, in the present disclosure, the multiple antennas may be in a 4×4 MIMO array or a 4×2 MIMO array.

[0088] In some embodiments, the middle frame assembly may be rectangular, but the present disclosure is not limited thereto. In some embodiments, the middle frame assembly may also be other shapes, such as square, circular, oval, or irregular.

[0089] In some embodiments, the first side 101 and the second side 102 may be the two long sides of a rectangle. For example, when the frame 100 is the middle frame of an electronic device, the first side 101 may be the left side of the frame 100 of the electronic device, and the second side 102 may be the right side of the frame 100 of the electronic device. However, the present disclosure is not limited thereto. In some embodiments, the first side 101 and the second side 102 may also be the two short sides of a rectangle. As long as the antenna radiation intensity is uniform in all directions, this is sufficient.

[0090] In MIMO communication systems, when multiple antennas are placed in close proximity, correlation exists between the received signals from each antenna. The greater the correlation, the lower the independence between the various signal channels, and the more significant the deterioration in the overall system transmission performance. In this disclosure, four low-frequency antennas are placed on both sides of the phone, creating a uniform radiation pattern that allows for better signal reception. This also reduces the amount of inter-winding between the four low-frequency antennas, improving antenna isolation and overall transmission capability.

[0091] In some embodiments, the first antenna 10 is located at the bottom of the midframe assembly. The bottom here can be generally referred to as the bottom of the midframe assembly. In a mobile phone, for example, the bottom of the midframe assembly can be the portion away from the phone's motherboard. The bottom provides good antenna clearance, and placing the first antenna 10 at the bottom of the midframe assembly can improve the midframe assembly's antenna performance.

[0092] Based on the same concept, an embodiment of the present disclosure further provides an electronic device.

[0093] The electronic device may be a laptop computer, desktop computer, mobile phone, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, translator, or wearable device such as a watch or bracelet, and may be any electronic device having a mid-frame assembly. In the following description, a mobile phone is used as an example. The antenna assembly may use the mid-frame or frame of the electronic device as a radiator to transmit and receive antenna signals. However, the present disclosure is not limited thereto.

[0094] It is understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of related objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0095] It is further understood that the terms "second," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, expressions such as "second," "secondary," and the like are fully interchangeable. For example, without departing from the scope of this disclosure, the second information may also be referred to as the second information, and similarly, the second information may also be referred to as the second information.

[0096] It can be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0097] It is further understood that, unless otherwise specified, “connection” includes a direct connection where there are no other components between the two elements, and also includes an indirect connection where there are other elements between the two elements.

[0098] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0099] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0100] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A middle frame assembly, characterized in that: The middle frame assembly includes: a frame, the frame comprising a first side and a second side opposite to each other; multiple antennas, at least a portion of the multiple antennas are respectively arranged on the first side and the second side, and the multiple antennas radiate and / or receive first frequency band signals, The multiple antennas are arranged around the frame so that the antenna patterns of the multiple antennas are evenly distributed.

2. The middle frame assembly according to claim 1, characterized in that: The antenna includes a first antenna and a second antenna, wherein the first antenna and the second antenna are respectively arranged at two ends of the first side; The antenna includes a third antenna and a fourth antenna, and the third antenna and the fourth antenna are respectively arranged at two ends of the second side.

3. The middle frame assembly according to claim 2, characterized in that: The first antenna includes a first radiator and a parasitic radiator, wherein the first radiator and the parasitic radiator are separated by a gap. The first radiator is provided with a feeding point and a grounding point. Compared with the feeding point, the grounding point is arranged away from the parasitic radiator.

4. The middle frame assembly according to claim 3, characterized in that: The first radiator includes a first radiating portion and a second radiating portion connected to each other, and the frame includes a third side connected to the first side; The first radiating portion is disposed on the first side, and the second radiating portion is disposed on the third side.

5. The middle frame assembly according to claim 4, characterized in that: The parasitic radiator is disposed on the first side, and compared to the first radiating portion, the parasitic radiator is disposed farther away from the third side.

6. The middle frame assembly according to claim 4, characterized in that: The feeding point is located at an end of the first side close to the third side, and the grounding point is located at an end of the first radiating portion.

7. The middle frame assembly according to claim 3, characterized in that: The first antenna is located at the bottom of the frame.

8. The middle frame assembly according to claim 3, characterized in that: The first antenna includes an adjustment circuit, which is electrically connected to the first radiator and changes the inductance or capacitance of the first antenna. The adjustment circuit is arranged on a side of the feed point close to the parasitic radiator.

9. The middle frame assembly according to claim 3, characterized in that: The length of the parasitic radiator is 35 mm to 45 mm.

10. The middle frame assembly according to claim 3, characterized in that: The current of the parasitic radiator is evenly distributed.

11. The middle frame assembly according to claim 4, characterized in that: The first antenna transmits and receives signals in a first frequency band; The second antenna receives the first frequency band signal; The third antenna transmits and receives the first frequency band signal; The fourth antenna receives the first frequency band signal.

12. The middle frame assembly according to claim 1, characterized in that: The frequency of the first frequency band signal is 600 Hz to 1000 Hz.

13. The middle frame assembly according to claim 1, characterized in that: The multiple antennas are a multiple-input multiple-output antenna array.

14. The middle frame assembly according to claim 1, characterized in that: The middle frame assembly is rectangular, and the first side and the second side are long sides of the rectangle.

15. An electronic device, characterized in that: include: The middle frame assembly according to any one of claims 1 to 14.

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