Electronic device

Abstract

The present application discloses an electronic device, including: an antenna assembly: a first stub, the first stub is provided with a first feeding point; a second stub is opposite to the first stub and forms a gap, the second stub is provided with a second feeding point and a detection connection point, the second feeding point is located on a side away from the first stub of the detection connection point; a first feeding power source is connected to the first feeding point and is used for feeding an excitation signal of a first frequency band into the first stub; a second feeding power source is connected to the second feeding point and is used for feeding an excitation signal of a second frequency band into the second stub, and at least part of the first frequency band and the second frequency band overlap; a detection assembly: a detection chip, which is used for detecting a detection signal of a third frequency band induced by the second stub; a filtering circuit, the filtering circuit forms a low impedance characteristic to the ground for the signals of the overlapping frequency band and forms a high impedance characteristic to the ground for the detection signal. The isolation degree of the signals of the overlapping frequency band corresponding to the first feeding power source and the second feeding power source can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technologies, and more particularly, to an electronic device. Background Art

[0002] Currently, with the rapid development of electronic information technologies, the number of frequency bands supported by the antenna of an electronic device is increasing, and people also need to control the radiation power of the electronic device. Although the distance between the human body and the electronic device can be detected by a detection component, and then the radiation power of the electronic device can be controlled. However, connecting the detection component easily causes mutual interference between the overlapping frequency bands of multiple feed power sources, resulting in a poor isolation degree of the overlapping frequency bands between the feed power sources. Summary of the Invention

[0003] The present application provides an electronic device to improve the above defects.

[0004] In a first aspect, an embodiment of the present application provides an electronic device, including: an antenna assembly, including a first branch, the first branch being provided with a first feeding point; a second branch, opposite to the first branch and having a gap formed therebetween, the second branch being provided with a second feeding point and a detection connection point, the second feeding point being located on a side of the detection connection point away from the first branch; a first feed power source, connected to the first feeding point, for feeding an excitation signal of a first frequency band into the first branch to excite the first branch to form a resonance of the first frequency band; a second feed power source, connected to the second feeding point, for feeding an excitation signal of a second frequency band into the second branch to excite the second branch to form a resonance of the second frequency band, wherein at least part of the first frequency band and the second frequency band overlap; a detection component, including a detection chip for detecting a detection signal of a third frequency band induced by the second branch; a filtering circuit, the filtering circuit being connected between the detection chip and the detection connection point and grounded, the filtering circuit forming a low impedance characteristic to the ground for the signal of the overlapping frequency band and forming a high impedance characteristic to the ground for the detection signal.

[0005] The electronic device provided by the present application includes: an antenna assembly and a detection assembly. The antenna assembly includes a first branch, a second branch, a first power feed source, and a second power feed source. The detection assembly includes a detection chip and a filter circuit. The first power feed source is connected to the first power feed point and is used to feed an excitation signal of a first frequency band into the first branch to excite the first branch to form a resonance of the first frequency band. The second power feed source is connected to the second power feed point and is used to feed an excitation signal of a second frequency band into the second branch to excite the second branch to form a resonance of the second frequency band. Among them, at least part of the first frequency band and the second frequency band overlap. The filter circuit is connected between the detection chip and the detection connection point and is grounded. The filter circuit forms a low impedance characteristic to the ground for the signals of the overlapping frequency bands and a high impedance characteristic to the ground for the detection signals. Since the excitation signal of the first frequency band fed by the first power feed source into the first branch and the excitation signal of the second frequency band fed by the second power feed source into the second branch include at least part of the overlapping frequency bands, and the excitation signals of the overlapping frequency bands are prone to interfere with each other, resulting in a decrease in the isolation degree of the first power feed source and the second power feed source corresponding to the overlapping frequency bands. Therefore, in the present application, the filter circuit forms a low impedance characteristic to the ground for the signals of the overlapping frequency bands, so that the signals of the overlapping frequency bands can be grounded through the filter circuit, which can reduce the mutual interference of the signals of the overlapping frequency bands to a certain extent, and further improve the isolation degree of the signals of the overlapping frequency bands corresponding to the first power feed source and the second power feed source. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0007] Figure 1 FIG. shows a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0008] Figure 2 FIG. shows a schematic structural diagram of the antenna assembly and the detection assembly provided by an embodiment of the present application;

[0009] Figure 3 FIG. shows a schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application;

[0010] Figure 4 FIG. shows a schematic structural diagram of the antenna assembly and the detection assembly provided by still another embodiment of the present application;

[0011] Figure 5 FIG. shows a schematic structural diagram of the antenna assembly and the detection assembly provided by yet another embodiment of the present application;

[0012] Figure 6 Shows the schematic diagram of the resonance point provided by the embodiment of the present application;

[0013] Figure 7 Shows the schematic diagram of the isolation degree provided by the embodiment of the present application;

[0014] Figure 8 Shows the schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application;

[0015] Figure 9 Shows the schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application;

[0016] Figure 10 Shows the schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application;

[0017] Figure 11 Shows the schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application;

[0018] Figure 12 Shows the schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application;

[0019] Figure 13 Shows the schematic diagram of the resonance point provided by yet another embodiment of the present application;

[0020] Figure 14 Shows the schematic diagram of the isolation degree provided by yet another embodiment of the present application;

[0021] Figure 15 Shows the schematic diagram of the radiation efficiency diagram provided by the embodiment of the present application;

[0022] Figure 16 Shows the schematic structural diagram of the antenna assembly and the detection assembly provided by another embodiment of the present application. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0025] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0028] Currently, with the rapid development of electronic information technology, the number of frequency bands that the antenna of an electronic device can support is increasing, and people also need to control the radiation power of the electronic device. Although the distance between the human body and the electronic device can be detected by a detection component, and then the radiation power of the electronic device can be controlled. However, connecting the detection component will make it easy for multiple antennas to interfere with each other, resulting in a poor isolation degree between the antennas. How to improve the isolation degree between the antennas is an urgent problem to be solved.

[0029] Currently, an electronic device generally has multiple power feeds. The electronic device can use the metal frame as an antenna stub, so that the power feed can radiate signals through the antenna stub. Specifically, the power feed can be used to generate an excitation signal of a specified frequency band, feed the excitation signal into the antenna stub, so that the antenna stub generates resonance based on the specified frequency band, and then generates an electromagnetic wave that can be transmitted in space, that is, the antenna stub can radiate a wireless communication signal based on the resonance, where the frequency band of the wireless communication signal is the same as the specified frequency band. The specified frequency band can be a single frequency band, for example, including the middle frequency MB (Middle Band, MB) frequency band, the N78 frequency band number or the N79 frequency band; the specified frequency band can also be more than one frequency band, for example, including the middle frequency MB frequency band and the N78 frequency band. Further, the specified frequency bands of the excitation signals generated by different power feeds may not overlap. For example, the specified frequency band of the excitation signal generated by power feed 1 can be the middle frequency MB frequency band, and the specified frequency band of the excitation signal generated by power feed 2 can be the N78 frequency band. In this case, the frequency bands of the excitation signals generated by power feed 1 and power feed 2 do not overlap with each other. The specified frequency bands of the excitation signals generated by different power feeds may also partially overlap. For example, the specified frequency band of the excitation signal generated by power feed 1 can include the middle frequency MB frequency band and the N78 frequency band, and the specified frequency band of the excitation signal generated by power feed 2 can include the N78 frequency band. In this case, the specified frequency bands in the excitation signals generated by power feed 1 and power feed 2 overlap in the N78 frequency band, that is, partially overlap.

[0030] Further, in order to obtain the distance between the electronic device and the human body, so that the transmission power of the electronic device can be adjusted according to the distance between the electronic device and the human body, thereby reducing the impact on the human body. A detection component for detecting the human body can be connected at a certain position of the antenna branch, and the distance between the human body and the electronic device can be detected by this detection component.

[0031] However, the inventor found in the research that the detection component needs to suspend the connected antenna branch to improve the detection sensitivity. However, suspending the antenna branch will reduce the isolation degree between the overlapping frequency bands in the excitation signals generated by different feed power sources.

[0032] Therefore, the present application provides an electronic device to solve or partially solve the above problems. The embodiments of the present application will be specifically described below with reference to the drawings.

[0033] Please refer to Figure 1 , Figure 1 which shows an electronic device 100. The electronic device 100 includes a front shell 110, a rear cover 120, and a middle plate 150. The middle plate 150 can be surrounded within a frame 105, and the middle plate 150 can also be connected to the frame 105. The middle plate 150 includes a first side and a second side facing away from each other. The rear cover 120 is assembled on the first side of the middle plate 150, and the front shell 110 is assembled on the second side of the middle plate 150. Specifically, both the front shell 110 and the rear cover 120 are assembled within the frame 105 to form a closed housing assembly 190. The front shell 110 may include a display screen 160. The front shell 110 and the rear cover 120 jointly enclose a receiving space to receive other components, such as a main board 170 and a battery 180, etc.

[0034] Further, the electronic device 100 may further include an antenna assembly ( Figure 2 250 in Figure 2In (205), the antenna assembly 250 can generate an excitation signal in a specified frequency band and generate resonance based on the excitation signal, thereby generating an electromagnetic wave signal that can be transmitted in space, that is, a wireless communication signal. Among them, the frequency of the wireless communication signal is related to the excitation signal in a specific frequency band. Therefore, the wireless communication signal can have different frequencies, that is, the wireless communication signal can include signals in different frequency bands. For example, it can be a signal in the lower frequency (LowerBand, LB) band, or a signal in the medium frequency MB band, or a signal in the high frequency (HighBand, HB) band. Further, the wireless communication signal can also have different communication modes. For example, the wireless communication signal can be a Global System for Mobile Communications (GSM), or a Long-Term Evolution (LTE), or a New Radio (5GNR). The detection component 205 can be used to detect the detected signal in the third frequency band. For specific introductions of the antenna assembly 250 and the detection component 205, please refer to the subsequent embodiments.

[0035] For some embodiments, the front shell 110 and the rear cover 120 can be metal casings. It should be noted that the materials of the front shell 110 and the rear cover 120 in the embodiments of the present application are not limited to this, and other methods can also be adopted. For example: the front shell 110 and the rear cover 120 can include a plastic part and a metal part. Another example: the front shell 110 and the rear cover 120 can be plastic casings, ceramic casings, etc. The protection cover plate can be a glass cover plate, a sapphire cover plate, a plastic cover plate, etc., providing protection for the display screen 160 to prevent dust, moisture, or oil stains from adhering to the display screen, avoiding corrosion of the display screen 160 by the external environment, and at the same time preventing the impact of the external environment on the display screen 160 and avoiding breakage of the display screen 160. The protection cover plate can include a display area and a non-display area. The display area is transparent to correspond to the light-emitting surface of the display screen 160. The non-display area is non-transparent to shield the internal structure of the electronic device 100. The non-display area can be provided with openings for sound and light conduction.

[0036] It should be noted that the electronic device 100 in the embodiments of the present application can also be a full-screen design without reserving a non-display area. The electronic device 100 can be provided with a headphone jack, a microphone jack, a speaker jack, and a Universal Serial Bus (USB) interface jack at its periphery. The headphone jack, the microphone jack, the speaker jack, and the USB interface jack are all through holes and are formed on the frame and can be electrically connected to the main board 170 in the accommodation space.

[0037] For some embodiments, the electronic device 100 may be a mobile phone or a smart phone, a portable gaming device, a laptop computer, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and such as watches, earphones, pendants, earbuds, etc. The electronic device 100 may also be other wearable devices (e.g., head-mounted devices (HMDs) such as electronic glasses, electronic clothes, electronic bracelets, electronic necklaces, electronic tattoos, smart watches).

[0038] The embodiments of the present application may be arranged on the electronic device in the following manner. Specifically, please refer to Figure 2 , Figure 2 FIG. shows a schematic structural diagram of an antenna assembly 250 and a detection assembly 205 in an electronic device 100. The antenna assembly 250 may generate an excitation signal in a specified frequency band and resonate based on the excitation signal, thereby generating an electromagnetic wave signal that can be transmitted in space, i.e., a wireless communication signal. The detection assembly 205 may be used to detect a detection signal in a third frequency band that is sensed.

[0039] For some embodiments, the antenna assembly 250 may include a first branch 201, a second branch 202, a first feed power source 203, and a second feed power source 204. Among them, a first feed point 281 is provided on the first branch 201. The first feed power source 203 may be connected to the first feed point 281, and the first branch 201 may be a metal conductor. The first feed power source 203 in the antenna assembly 250 may generate an excitation signal in a first frequency band and feed the excitation signal in the first frequency band into the first branch 201 through the first feed point 281 to excite the first branch 201 to form a resonance in the first frequency band. The first branch 201 may generate an electromagnetic wave that can freely propagate in space based on the resonance in the first frequency band, i.e., a wireless communication signal. The wireless communication signal may be a wireless communication signal in the first frequency band.

[0040] Further, the second branch 202 faces the first branch 201 and has a gap 206 formed therebetween. The second branch 202 is provided with a second feeding point 2022 and a detection connection point 2021. The second feeding point 2022 is located on a side of the detection connection point 2021 away from the first branch 201. The second branch 202 can be a metal conductor. The second feeding source 204 in the antenna assembly 250 is connected to the second feeding point 2022. The second feeding source 204 can generate an excitation signal in a second frequency band and feed the excitation signal in the second frequency band into the second branch 202 through the second feeding point 2022 to excite the second branch 202 to form a resonance in the second frequency band. The second branch 201 can generate electromagnetic waves that can freely propagate in space, i.e., wireless communication signals, based on the resonance in the second frequency band. The wireless communication signals can be wireless communication signals in the second frequency band. Among them, the first frequency band and the second frequency band at least include partially overlapping frequency bands. For example, the first frequency band includes the Middle High Band (MHB) frequency band and the ultra-high frequency band, and the second frequency band includes the ultra-high frequency band. Then the overlapping frequency band can be the ultra-high frequency band, such as the N78 frequency band. The frequency band corresponding to N78 is 3400 - 3600 MHz, and the middle high frequency band is 1000 MHz - 3000 MHz.

[0041] For some embodiments, the detection component 205 is configured to detect the distance between the object to be detected and the electronic device 100. The object to be detected can be a human body or a part of the human body, such as the head, body, hand, or leg of the human body.

[0042] It is not difficult to understand that since the skin surface of the subject to be detected is charged, a magnetic field can be formed on the surface of the subject to be detected. When the subject to be detected approaches the second branch 202, it is equivalent to placing the second branch 202 in the magnetic field formed by the subject to be detected. At this time, since the second branch 202 is a metal conductor, the second branch 202 can generate an induced current, and this induced current is the detection signal received by the second branch 202. It is easy to understand that since the second branch 202 induces an induced current in the magnetic field generated by the subject to be detected, it can be known that the closer the distance between the subject to be detected and the second branch 202, the stronger the magnetic field where the second branch 202 is located, and the stronger the induced current generated by induction; while the farther the distance between the subject to be detected and the second branch 202, the weaker the magnetic field where the second branch 202 is located, and the weaker the induced current generated by induction. Therefore, the detection component connected to the second branch 202 can obtain the detection signal in the third frequency band, that is, the induced current, so as to judge the distance between the subject to be detected and the electronic device according to the magnitude of this induced current. It should be noted that since the second branch is arranged in the electronic device 200, the distance between the subject to be detected and the second branch 202 determined through the second branch 202 can be approximately used as the distance between the electronic device 200 and the subject to be detected.

[0043] Specifically, the detection component 205 may include a detection chip 2051, and the detection chip 2051 can be connected to the second branch 202. The detection chip 2051 may include an input end 2053. The detection chip 2051 can be connected to the detection connection point 2021 through the input end 2053 for detecting the detection signal in the third frequency band induced by the second branch 202. The second branch 202 can generate a detection signal in the third frequency band based on the distance between the subject to be detected and the electronic device 100. The detection component 205 connected to the second branch 202 can obtain this detection signal in the third frequency band, so as to determine the distance between the subject to be detected and the electronic device 100 based on this detection signal in the third frequency band. Exemplarily, the detection chip 2051 can be a Specific Absorption Rate (SAR) detector.

[0044] Furthermore, from the above analysis, it can be seen that the detection signal is the induced current generated by the magnetic field of the object to be detected, and the frequency of this induced current is associated with the magnetic field direction. Since the magnetic field direction of the object to be detected changes slowly, it is easy to know that the frequency of this induced current is low, that is, the third frequency band corresponds to a frequency band with a relatively low frequency. Moreover, if the second branch 202 floats relative to the reference ground, that is, the second branch is not directly connected to the reference ground, at this time, most of the detection signals obtained by the second branch can be fed into the detection component 205, rather than being fed into the reference ground. Therefore, the sensitivity of the detection signals obtained by the second branch can be improved, thereby improving the sensitivity of obtaining the distance between the electronic device 200 and the object to be detected. Therefore, the detection component 205 may further include a filter circuit 2052, and the filter circuit 2052 is connected between the detection chip 2051 and the detection connection point 2022, that is, between the input end 2053 and the detection point 2022, and is grounded. From the above analysis, it can be seen that the detection signal is a signal with a relatively low frequency, and the frequency band corresponding to the detection signal includes the third frequency band. Then, the filter circuit 2052 can form a characteristic of high impedance to the ground for the signals in the third frequency band, so that most of the detection signals obtained by the second branch can be fed into the detection component 205, rather than being fed into the reference ground. Therefore, the filter circuit 2052 forms a characteristic of low impedance to the ground for the signals in the overlapping frequency band, and forms a characteristic of high impedance to the ground for the detection signals. Thus, while improving the sensitivity of obtaining the distance between the electronic device 100 and the object to be detected, by grounding the signals in the overlapping frequency band through the filter circuit 2052, the mutual interference of the signals in the overlapping frequency band can be reduced to a certain extent, and further the isolation degree of the signals in the overlapping frequency band corresponding to the first power supply and the second power supply can be improved.

[0045] It is not difficult to understand that if there are multiple power supplies in the electronic device 100, and there are overlapping frequency bands between the frequency bands corresponding to the excitation signals generated by the power supplies, it may cause coupling between different power supplies, and further reduce the isolation degree between different power supplies. Exemplarily, if the electronic device is provided with a power supply A and a power supply B, where the power supply A is used to generate excitation signals with frequency bands X and Y, and the power supply B is used to generate excitation signals with frequency band X, then both the power supply A and the power supply B can generate excitation signals with frequency band X. At this time, if the excitation signal with frequency band X generated by the power supply A couples into the power supply B, and the excitation signal with frequency band X generated by the power supply B couples into the power supply A, it will cause coupling between the power supply A and the power supply B, reducing the isolation degree between the power supply A and the power supply B.

[0046] Therefore, please continue to refer to Figure 2, there is a gap 206 between the first branch 201 and the second branch 202. Among them, the first feed power source 203 can generate an excitation signal in the first frequency band. After the excitation signal in the first frequency band is fed into the first branch 201, resonance can be generated in the first branch 201. For some embodiments, the gap 206 can be regarded as an equivalent capacitance, and different distances of the gap 206 can generate different capacitance values. Therefore, the excitation signal in the first frequency band can also be coupled to the second branch 202 through the gap 206. At this time, if there is a partially overlapping frequency band in the excitation signal in the second frequency band generated by the second feed power source 204 connected to the second branch 202 and the excitation signal in the first frequency band, then a part of the excitation signal in the overlapping frequency band in the excitation signal in the first frequency band coupled to the second branch 202 through the gap 206 will be fed into the second feed power source 204, thereby causing a decrease in the efficiency of the excitation signal in the first frequency band generated by the first feed power source 203, and further reducing the efficiency of the first branch 201 radiating the wireless communication signal in the first frequency band.

[0047] Similarly, the second feed power source 204 can generate an excitation signal in the second frequency band. After the excitation signal in the second frequency band is fed into the second branch 202, resonance can be generated in the second branch 202. Therefore, the excitation signal in the second frequency band can also be coupled to the first branch 201 through the gap 206. At this time, a part of the excitation signal in the overlapping frequency band in the excitation signal in the second frequency band coupled to the first branch 201 through the gap 206 will be fed into the first feed power source 203, thereby causing a decrease in the efficiency of the excitation signal in the second frequency band generated by the second feed power source 204, and further reducing the efficiency of the second branch 202 radiating the wireless communication signal in the second frequency band.

[0048] For the embodiments provided in this application, when the first feed power supply 203 radiates the wireless communication signal of the first frequency band through the first stub 201, the second stub 202 can also be coupled to the wireless communication signal of the first frequency band, and the wireless communication signal of the first frequency band can be coupled on the second stub 202 to obtain the signal of the first frequency band. Exemplarily, if the first frequency band is the N78 frequency band, that is, the signal of the first frequency band coupled by the second stub 202 is also the N78 frequency band, and the N78 frequency band is the same as the second frequency band of the excitation signal generated by the second feed power supply 204. That is, at this time, a part of the signal of the first frequency band will be fed into the second feed power supply 204. Similarly, the second stub 202 can also be coupled to the wireless communication signal of the second frequency band, and the wireless communication signal of the second frequency band can be coupled on the second stub 202 to obtain the signal of the second frequency band. Specifically, on the second stub 202, the wireless communication signal of the second frequency band is radiated by detecting the stub corresponding to the end of the connection point 2021 to the second stub 202 away from the first stub 201. Therefore, for the stub corresponding to the end of the second stub 202 facing the first stub 201 to the detection connection point 2021, the wireless communication signal of the second frequency band can be coupled to generate the signal of the second frequency band, and then coupled to the first stub 201 through the gap 206. Therefore, a coupling is formed between the first feed power supply 203 and the second feed power supply 204, resulting in a low isolation degree between the first feed power supply 203 and the second feed power supply 204.

[0049] Among them, the wireless communication signal of the first frequency band can be coupled to the second stub 202 through the first coupling path. The first coupling path can be that the wireless communication signal of the first frequency band is coupled to the second stub 202 through the transmission medium. The transmission medium can be one or more of air, dielectric substrate, floor, and ground layer, etc. It can also be coupled to the second stub 202 through the second coupling path. The second coupling path can be that the wireless communication signal of the first frequency band is coupled to the second stub 202 through the gap 206 existing between the first stub 201 and the first end of the second stub 202. Similarly, the manner in which the second wireless communication signal is coupled to the first stub 201 is similar to the manner in which the first wireless communication signal is coupled to the second stub 202, and will not be elaborated here.

[0050] Therefore, in order to improve the efficiency of the first feed power supply 203 in generating the excitation signal of the first frequency band, thereby improving the efficiency of the first stub 201 in radiating the wireless communication signal of the first frequency band, and improving the efficiency of the second feed power supply 204 in generating the excitation signal of the second frequency band, thereby improving the efficiency of the second stub 202 in radiating the wireless communication signal of the second frequency band, the second stub 202 can be grounded. For some embodiments, the signals in the overlapping frequency band can be grounded through the filter circuit 2052 connected to the second stub 202, where the signals in the overlapping frequency band can include the excitation signals in the overlapping frequency band in the excitation signal of the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band. Specifically, since the filter circuit 2052 forms a low impedance characteristic to the ground for the signals in the overlapping frequency band, among the excitation signals of the first frequency band generated by the first feed power supply 203, the part of the excitation signals in the overlapping frequency band coupled to the second stub 202 through the slot 206 can be grounded through the filter circuit 2052; and the excitation signals in the overlapping frequency band in the excitation signal of the second frequency band generated by the second feed power supply 204 can also be grounded through the filter circuit 2052. Thus, the efficiency of the first feed power supply 203 in generating the excitation signal of the first frequency band can be improved, and the efficiency of the second feed power supply 204 in generating the excitation signal of the second frequency band can be improved. Among them, the filter circuit 2052 can be a capacitor, a band-stop filter, a low-pass filter, etc. For specific details, please refer to the introduction of the subsequent embodiments.

[0051] Please refer to Figure 3 , Figure 3 FIG. shows a schematic structural diagram of the antenna assembly 250 and the detection assembly 205 in an electronic device 100. Among them, for the specific connection relationship and functions of the antenna assembly 250 and the detection assembly 205, please refer to the introduction in the foregoing embodiments, and details are not described herein again.

[0052] For some embodiments, as can be seen from the foregoing introduction, the filtering circuit 2052 forms a low impedance characteristic to the ground for the signals in the overlapping frequency band, and forms a high impedance characteristic to the ground for the detection signals. Therefore, exemplarily, the filtering circuit 2052 can be a capacitor. Specifically, the filtering circuit 2052 can include a first capacitor C1. One end of the first capacitor C1 is connected to the input terminal 2053 of the detection chip 2051, and the other end is grounded. That is, one end of the first capacitor C1 is connected to the detection connection point 2021 on the second branch 202, and the other end is grounded. The first capacitor C1 forms a low impedance characteristic to the ground for the signals in the overlapping frequency band. That is, among the excitation signals in the first frequency band coupled by the second branch 202, the excitation signals in the overlapping frequency band can be conducted by the first capacitor C1, that is, approximately short-circuited to the ground at the other end of the first capacitor C1, so as to achieve grounding. Similarly, among the excitation signals in the second frequency band fed into the second branch 202 through the second feeding power supply 204, the excitation signals in the overlapping frequency band can be conducted by the first capacitor C1, that is, approximately short-circuited to the ground at the other end of the first capacitor C1, so as to achieve grounding. Also, since the first capacitor C1 forms a high impedance characteristic to the ground for the detection signals, the detection signals in the third frequency band induced by the second branch 202 will be cut off by the first capacitor C1, that is, approximately open-circuited to the ground at the other end of the first capacitor C1, so that the detection signals are input through the input terminal 2053 of the detection chip 2051, thereby improving the sensitivity of the second branch 202 to obtain the detection signals, and further improving the sensitivity of obtaining the distance between the electronic device 100 and the object to be detected.

[0053] Another exemplary case is that the filtering circuit 2052 can also be a band-stop filter. That is, one end of the band-stop filter is connected to the detection connection point 2021 on the second stub 202, and the other end is grounded. The band-stop filter can block signals within the cut-off frequency range and pass signals outside the cut-off frequency range. Therefore, the band-stop filter can use the third frequency band range corresponding to the detection signal as the cut-off frequency. At this time, the high-pass filter can form a high impedance characteristic to the ground for the detection signal in the third frequency band, and form a low impedance characteristic to the ground for the signals in the overlapping frequency band. That is, among the excitation signals in the first frequency band coupled by the second stub 202, the excitation signals in the overlapping frequency band can be conducted by the band-stop filter, that is, approximately short-circuited to the ground at the other end of the band-stop filter, so as to achieve grounding. Similarly, among the excitation signals in the second frequency band fed into the second stub 202 through the second feed power supply 204, the excitation signals in the overlapping frequency band can be conducted by the band-stop filter, that is, approximately short-circuited to the ground at the other end of the band-stop filter, so as to achieve grounding. Also, since the band-stop filter forms a high impedance characteristic to the ground for the detection signal, the detection signal in the third frequency band induced by the second stub 202 will be blocked by the band-stop filter, that is, approximately open-circuited to the ground at the other end of the band-stop filter, so that the detection signal is input through the input terminal 2053 of the detection chip 2051. Thus, the sensitivity of the second stub 202 to obtain the detection signal can be improved, and further the sensitivity of obtaining the distance between the electronic device 100 and the object to be detected can be improved.

[0054] Another exemplary embodiment is that the filtering circuit 2052 can also be a high-pass filter. One end of the high-pass filter is connected to the detection connection point 2021 on the second stub 202, and the other end is grounded. The high-pass filter can block signals with frequencies lower than the cut-off frequency and pass signals with frequencies greater than or equal to the cut-off frequency. Therefore, the high-pass filter can use the upper limit value of the third frequency band range corresponding to the detection signal as the cut-off frequency. At this time, the high-pass filter can form a high impedance characteristic to the ground for the detection signals in the third frequency band, and form a low impedance characteristic to the ground for the signals in the overlapping frequency band. That is, among the excitation signals in the first frequency band coupled by the second stub 202, the excitation signals in the overlapping frequency band can be conducted by the high-pass filter, that is, approximately short-circuited to the ground at the other end of the high-pass filter, thereby achieving grounding. Similarly, for the excitation signals in the second frequency band fed into the second stub 202 through the second feed power supply 204, the excitation signals in the overlapping frequency band can be conducted by the high-pass filter, that is, approximately short-circuited to the ground at the other end of the high-pass filter, thereby achieving grounding. Also, since the high-pass filter forms a high impedance characteristic to the ground for the detection signals, the detection signals in the third frequency band induced by the second stub 202 will be blocked by the high-pass filter, that is, approximately open-circuited to the ground at the other end of the high-pass filter, so that the detection signals are input through the input terminal 2053 of the detection chip 2051. Thus, the sensitivity of the second stub 202 to obtain the detection signals can be improved, and further the sensitivity of obtaining the distance between the electronic device 100 and the object to be detected can be improved.

[0055] Please refer to Figure 4 , Figure 4 shows a schematic structural diagram of the antenna assembly 250 and the detection assembly 205 in an electronic device 100. Among them, for the specific connection relationships and functions of the antenna assembly 250 and the detection assembly 205, please refer to the descriptions in the foregoing embodiments, and will not be elaborated here.

[0056] For some embodiments, through the above analysis, it can be seen that the frequency of the third frequency band is lower than that of the overlapping frequency band. Therefore, in order to couple the detection signal of the third frequency band with a lower frequency into the detection chip 2051 as much as possible, and prevent the signal of the overlapping frequency band with a higher frequency from being coupled into the detection chip 2051 as much as possible, an inductor can be connected in series between the input terminal 2053 of the detection chip 2051 and the detection connection point 2021. Specifically, the detection component 205 may further include a first inductor L1, where one end of the first inductor L1 is connected to one end of the first capacitor C1, and the other end is connected to the input terminal 2053 of the detection chip 2051. Among them, the first inductor L1 forms a high impedance characteristic for the signal of the overlapping frequency band and a low impedance characteristic for the detection signal. Therefore, through the first inductor L1, it is possible to couple the detection signal of the third frequency band with a lower frequency into the detection chip 2051 as much as possible, and prevent the signal of the overlapping frequency band with a higher frequency from being coupled into the detection chip 2051, thereby improving the sensitivity of the detection component 205 to detect the distance between the object to be detected and the electronic device 200.

[0057] Please refer to Figure 5 , Figure 5 FIG. shows a schematic structural diagram of the antenna component 250 and the detection component 205 in an electronic device 100. Among them, for the specific connection relationship and functions of the antenna component 250 and the detection component 205, please refer to the description in the foregoing embodiments, and will not be elaborated here.

[0058] For some embodiments, the first feed power source 203 and the first stub 201 may be connected through the first feed wire 211. When the excitation signal in the first frequency band generated by the first feed power source 203 is fed into the first stub 201 through the first feed wire 211, different impedances will be generated in the first feed wire 211. Since the frequency of the first frequency band is generally relatively high, if the impedance between the first feed wire 211 and the first feed power source 203 does not match, part of the excitation signal in the first frequency band fed from the first feed power source 203 into the first stub 201 will be reflected back to the first feed power source 203 during the transmission through the first feed wire 211 to the first stub 201, resulting in a decrease in the efficiency of the first feed power source. Therefore, the electronic device 100 may further include a first matching circuit 207. The first end of the first matching circuit 207 is connected to the first feed power source 203, the second end is connected to the first feed point 281 on the first stub 201, and the third end is grounded. The first matching circuit 207 is used to match the impedance between the first feed power source 203 and the first feed wire 211, so that the excitation signal in the first frequency band generated by the first feed power source 203 can be transmitted to the first stub 201 through the first feed wire 211 as much as possible, and less is reflected back to the first feed power source 203, thereby improving the efficiency of the first feed power source 203. Exemplarily, when the impedance between the first feed wire 211 and the first feed power source 203 is matched, the impedance between the first feed wire 211 and the first feed power source 203 may be 75 ohms. Among them, the first matching circuit 207 may be a matching circuit composed of an inductor and a capacitor, and the present application does not limit this.

[0059] Similarly, the second feed power supply 204 can be connected to the second feed point 2022 on the second stub 202 through the second feed wire 212. When the excitation signal of the second frequency band generated by the second feed power supply 204 is fed into the second stub 202 through the second feed wire 212, different impedances will be generated in the second feed wire 212. Since the frequency of the second frequency band is generally relatively high, if the impedance between the second feed wire 212 and the second feed power supply 204 does not match, a part of the excitation signal of the second frequency band fed into the second stub 202 by the second feed power supply 204 will be reflected back to the second feed power supply 204 during the transmission process through the second feed wire 212 to the second stub 202, resulting in a decrease in the efficiency of the first feed power supply. Therefore, the electronic device 100 may further include a second matching circuit 210. The first end of the second matching circuit 210 is connected to the second feed power supply 204, the second end is connected to the first feed point 281 on the second stub 202, and the third end is grounded. The second matching circuit 210 is used to match the impedance between the second feed power supply 204 and the second feed wire 212, so that the excitation signal of the second frequency band generated by the second feed power supply 204 can be transmitted to the second stub 202 through the second feed wire 212 as much as possible, and less is reflected back to the second feed power supply 204, thereby improving the efficiency of the second feed power supply 204. Exemplarily, when the impedance between the second feed wire 212 and the second feed power supply 204 is matched, the impedance between the second feed wire 212 and the second feed power supply 204 can be 75 ohms. Among them, the second matching circuit 210 may be a matching circuit composed of an inductor and a capacitor, and the present application does not limit this.

[0060] Exemplarily, please refer to Figure 6 , Figure 6 which shows a schematic diagram of the resonance points of a first feed power supply and a second feed power supply. Figure 6 In the shown figure, the abscissa is frequency, with the unit of GHz, where 1 GHz = 1000 MHz, and the ordinate is the coupling depth, with the unit of dB. Figure 6 It includes curve N1 and curve N2. Among them, curve N1 is the relationship curve between the coupling depth and frequency corresponding to the first feed power supply, and curve N2 is the relationship curve between the coupling depth and frequency corresponding to the second feed power supply. Through Figure 6 it can be known that curve N1 includes point M1 and point M2. Among them, the coupling depth at point M1 and point M2 is relatively deep. Therefore, point M1 and point M2 are the two resonance points corresponding to the first feed power supply. Specifically, the frequency corresponding to point M1 is 1.85 GHz, and the corresponding coupling depth is -2.58 dB; the frequency corresponding to point M2 is 3.51 GHz, and the corresponding coupling depth is -1.56 dB. Figure 6It also includes point M3, where point M3 is a point on curve N2 with a relatively deep coupling depth. Specifically, the frequency corresponding to point M3 is 3.53 GHz, and the corresponding coupling depth is -15.96 dB. It should be noted that the smaller the coupling depth, the deeper the coupling depth is represented.

[0061] Please refer to Figure 7 , Figure 7 which shows a schematic diagram of the isolation between a first feeding power source and a second feeding power source. Specifically, Figure 7 the abscissa in it is frequency, with the unit of GHz, and the ordinate is isolation, with the unit of dB. Among them, Figure 7 it includes curve N3, and curve N3 includes point M4. Curve N3 is used to represent the isolation between the first feeding power source and the second feeding power source, and point M4 represents that the isolation between the first feeding power source and the second feeding power source at the frequency corresponding to point M4 is the isolation value corresponding to point M4. Specifically, the frequency corresponding to point M4 is 3.53 GHz, and the corresponding isolation is -8.06 dB. Then it can be known that the isolation between the first feeding power source and the second feeding power source at 3.53 GHz is -8.06 dB, that is, a certain degree of decoupling between the first feeding power source and the second feeding power source is achieved, and the isolation between the first feeding power source and the second feeding power source in the N78 frequency band is improved to a certain extent. Further, combining the above analysis, it can be known that the first wireless communication signal generated by the first feeding power source and the second wireless communication signal generated by the second feeding power source overlap in the N78 frequency band, that is, the first feeding power source and the second feeding power source do not overlap in the frequency bands outside the N78 frequency band. Therefore, in the frequency bands outside the N78 frequency band, the isolation between the first feeding power source and the second feeding power source is relatively high.

[0062] For some embodiments, in order to further improve the isolation between the first feeding power source and the second feeding power source, an isolation circuit can also be set in the second branch section, and the signals in the overlapping frequency band can be grounded through this isolation circuit. Specifically, please refer to Figure 8 , Figure 8 which shows a schematic diagram of the structure of the antenna assembly 250 and the detection assembly 205 in an electronic device 100. Among them, Figure 8The illustrated electronic device 100 further includes an isolation circuit 209, which can be disposed between the first end of the second stub 202 and the feeding point 2022. Therefore, when the first feeding power source 203 generates a first wireless communication signal through the first stub 201, a first current is coupled on the second stub by the first wireless communication signal. At this time, the isolation circuit 209 can be used to ground the first current generated by the first wireless communication signal on the second stub; when the second feeding power source 204 generates a second wireless communication signal through the second stub 202, the second stub 202 can couple to generate a second current, and the second current can be coupled to the first stub 201 through the slot 206. At this time, the isolation circuit 209 is further used to ground the second current generated by the second wireless communication signal on the second stub. Among them, the coupling to generate the first current and the second current can refer to the introduction in the foregoing embodiments, and will not be elaborated here. By providing the isolation circuit 209, the isolation degree between the first feeding power source 203 and the second feeding power source 204 can be further improved.

[0063] Optionally, Figure 8 In the illustrated electronic device 100, an isolation point 282 is further provided on the second stub 202, and the isolation point 282 is located on the side of the second feeding point 2022 facing the first stub 201. Further, the antenna assembly 250 further includes an isolation circuit 209, and the isolation circuit 209 is connected to the isolation point 282 and grounded. The isolation circuit 209 forms a low impedance characteristic to the ground for signals in the overlapping frequency band.

[0064] Specifically, through the foregoing introduction, it can be known that the signals in the overlapping frequency band include the excitation signals in the overlapping frequency band in the excitation signals of the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band. Therefore, the isolation circuit 209 can form a low impedance to the ground for the excitation signals in the overlapping frequency band in the excitation signals of the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band, so that the excitation signals in the overlapping frequency band in the excitation signals of the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band can be grounded through the isolation circuit 209, thereby improving the isolation degree between the first feeding power source 203 and the second feeding power source 204. Among them, the analysis of improving the isolation degree can refer to the description in the foregoing embodiments, and will not be elaborated here.

[0065] Please refer to Figure 9 , Figure 9 which shows a schematic structural diagram of the antenna assembly 250 and the detection assembly 205 in an electronic device 100. Among them, the specific connection relationship and functions of the antenna assembly 250 and the detection assembly 205 can refer to the introduction in the foregoing embodiments, and will not be elaborated here.

[0066] Figure 9In the illustrated electronic device 100, the isolation point 282 provided on the second stub 202 may include a first filtering point 2821, and the first filtering point 2821 is located on a side of the detection connection point 2021 facing the first stub 202. The isolation circuit 209 may include a first filtering circuit 2091. The first filtering circuit 2091 is connected to the first filtering point 2821 and grounded, and the first filtering circuit forms a low impedance characteristic to the ground for signals in the overlapping frequency band.

[0067] Specifically, from the foregoing introduction, it can be known that the signals in the overlapping frequency band include the excitation signals in the overlapping frequency band among the excitation signals in the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band. Therefore, the first filtering circuit 2091 can form a low impedance to the ground for the excitation signals in the overlapping frequency band among the excitation signals in the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band. Thus, the excitation signals in the overlapping frequency band among the excitation signals in the first frequency band and the excitation signals in the overlapping frequency band in the second frequency band can be grounded through the first filtering circuit 2091, thereby improving the isolation degree between the first feed power supply 203 and the second feed power supply 204. For the analysis of improving the isolation degree, reference can be made to the description in the foregoing embodiments, and details will not be elaborated herein.

[0068] Please refer to Figure 10 , Figure 10 FIG. shows a schematic structural diagram of the antenna assembly 250 and the detection assembly 205 in an electronic device 100. Among them, for the specific connection relationship and functions of the antenna assembly 250 and the detection assembly 205, reference can be made to the introduction in the foregoing embodiments, and details will not be elaborated herein.

[0069] Figure 10 In the illustrated electronic device 100, the isolation point 282 provided on the second stub 202 may include a second filtering point 2822, and the second filtering point 2822 is located on a side of the detection connection point 2021 away from the first stub 202. The isolation circuit 209 may further include a second filtering circuit 2092. The second filtering circuit 2092 is connected to the second filtering point 2822 and grounded, and the second filtering circuit 2092 forms a low impedance characteristic to the ground for signals in the overlapping frequency band.

[0070] Similarly, the second filtering circuit 2092 can form a low impedance to the ground for the excitation signals in the overlapping frequency bands in the excitation signals of the first frequency band and the excitation signals in the overlapping frequency bands in the second frequency band. Thus, the excitation signals in the overlapping frequency bands in the excitation signals of the first frequency band and the excitation signals in the overlapping frequency bands in the second frequency band can be grounded through the second filtering circuit 2092, thereby improving the isolation between the first feed power supply 203 and the second feed power supply 204. For the analysis of improving the isolation, reference can be made to the description in the foregoing embodiments, and details are not described herein again.

[0071] Please refer to Figure 11 , Figure 11 FIG. shows a schematic structural diagram of an antenna assembly 250 and a detection assembly 205 in an electronic device 100. Among them, for the specific connection relationship and functions of the antenna assembly 250 and the detection assembly 205, reference can be made to the introduction in the foregoing embodiments, and details are not described herein again.

[0072] Figure 11 In the illustrated electronic device 100, the isolation points 282 provided on the second branch 202 may include a first filtering point 2821 and the second filtering point 2822. The second filtering point 2822 is located on the side of the detection connection point 2021 away from the first branch 201, and the first filtering point 2821 is located on the side of the detection connection point 2021 facing the first branch 201. Therefore, the second filtering point 2822 is located on the side of the detection connection point 2021 away from the first branch 201. The isolation circuit 209 may include a first filtering circuit 2091 and a second filtering circuit 2092. The first filtering circuit 2091 is connected to the first filtering point 2821 and grounded; the second filtering circuit 2092 is connected to the second filtering point 2822 and grounded.

[0073] Further, in the embodiment provided by the present application, both the first filtering circuit 2091 and the second filtering circuit 2092 form a low impedance characteristic to the ground for the signals in the overlapping frequency bands. Therefore, the isolation between the first feed power supply 203 and the second feed power supply 204 can be further improved. For the analysis of improving the isolation, reference can be made to the description in the foregoing embodiments, and details are not described herein again.

[0074] Further, please refer to Figure 12 , where Figure 12 FIG. shows a schematic structural diagram of an antenna assembly 250 and a detection assembly 205 in an electronic device 100. Among them, for the specific connection relationship and functions of the antenna assembly 250 and the detection assembly 205, reference can be made to the introduction in the foregoing embodiments, and details are not described herein again.

[0075] Specifically, Figure 12The first filtering circuit 2091 includes a second capacitor C2 and a second inductor L2. One end of the second capacitor C2 is connected to the first filtering point 2821, and the other end is connected to the second inductor L2. The other end of the second inductor L2 is grounded. The second filtering circuit 2092 includes a third capacitor C3 and a third inductor L3. One end of the third capacitor C3 is connected to the second filtering point 2822, and the other end is connected to the third inductor L3. The other end of the third inductor L3 is grounded. Exemplarily, in order to make the conduction frequency band of the first filtering circuit 2091 composed of the second capacitor C2 and the second inductor L2 the same as the overlapping frequency band, the second capacitor C2 can be 3 pf, where pf is the capacitance unit picofarad, and the second inductor L2 can be 0.7 nh, where nh is the inductance unit nanohenry. Also exemplarily, in order to make the conduction frequency band of the second filtering circuit 2092 composed of the third capacitor C3 and the third inductor L3 the same as the overlapping frequency band, the third capacitor C3 can be 3 pf, and the third inductor L3 can be 0.7 nh. Thus, both the first filtering circuit 2091 and the second filtering circuit 2092 form a low impedance characteristic to the ground for the signals in the overlapping frequency band, so the isolation degree between the first feeding power supply 203 and the second feeding power supply 204 can be further improved.

[0076] Please refer to Figure 13 , Figure 13 which shows Figure 11 a schematic diagram of the resonance points of the first feeding power supply and the second feeding power supply in the electronic device 100 shown. Figure 13 In the shown, the abscissa is frequency, with the unit of GHz, and the ordinate is coupling depth, with the unit of dB. Figure 13 It includes a curve N5 and a curve N6. The curve N5 is the relationship curve between the coupling depth and the frequency corresponding to the first feeding power supply, and the curve N6 is the relationship curve between the coupling depth and the frequency corresponding to the second feeding power supply. Through Figure 13 it can be known that the curve N5 includes points M5 and M6. The coupling depth at points M5 and M6 is relatively deep, so points M5 and M6 are the two resonance points corresponding to the first feeding power supply. Specifically, the frequency corresponding to point M5 is 1.85 GHz, and the corresponding coupling depth is -2.63 dB; the frequency corresponding to point M6 is 3.53 GHz, and the corresponding coupling depth is -3.60 dB. Figure 13 It also includes a point M7. Point M7 is a point with a relatively deep coupling depth on the curve N6. Specifically, the frequency corresponding to point M7 is 3.53 GHz, and the corresponding coupling depth is -4.26 dB. Further, Figure 13 it also includes a point M8. The point M8 is located on the curve N6, near the frequency of 2.4 GHz. Therefore, it can be known that for some embodiments, the second feeding power supply can also generate an excitation signal near 2.4 GHz, and then radiate the wireless communication signal in the 2.4 GHz frequency band through the second branch.

[0077] Further, please refer to Figure 14 , Figure 14 which shows Figure 11 the isolation between the first power feeder and the second power feeder in the electronic device 100 in Figure 14 . Specifically, in Figure 14 , the abscissa is frequency in GHz, and the ordinate is isolation in dB. Among them, Figure 7 includes curve N7, and curve N7 includes point M9. Curve N7 is used to characterize the isolation between the first power feeder and the second power feeder, and point M9 represents that the isolation between the first power feeder and the second power feeder at the frequency corresponding to point M9 is the isolation value corresponding to point M9. Specifically, the frequency corresponding to point M9 is 3.55 GHz, and the corresponding isolation is -12.0 dB. Then it can be known that the isolation between the first power feeder and the second power feeder at 3.55 GHz is -12.0 dB. Among them, 3.55 GHz is the overlapping frequency band, that is, the N78 frequency band. Compared with

[0078] Further, please refer to Figure 15 , Figure 15 which respectively show Figure 2 the radiation efficiency diagrams of the electronic device in Figure 11 and the electronic device shown in Figure 15 in the N78 frequency band. In Figure 15 , the abscissa is frequency in GHz, and the ordinate is radiation efficiency in dB. Specifically, Figure 2 includes curve N8 and curve N9, where N8 is used to characterize Figure 11 the radiation efficiency of the electronic device 100 in the N78 frequency band shown in Figure 15 , and N9 is used to characterize Figure 11 the radiation efficiency of the electronic device 100 in the N78 frequency band shown in

[0079] Please refer to Figure 16 , Figure 16The structural schematic diagram of the antenna assembly 250 and the detection assembly 205 in an electronic device 100 is shown. Among them, for the specific connection relationship and functions of the antenna assembly 250 and the detection assembly 205, reference can be made to the introduction in the foregoing embodiments, and details will not be elaborated here.

[0080] Further, the antenna assembly 250 may further include a third branch 275, which is opposite to the second branch 202 and forms a second gap 276. Similar to the gap 206, the excitation signal in the second frequency band generated by the second feed source 204 can be coupled to the third branch 275 through the second gap 276. A third grounding point 274 is also provided on the third branch 275, and the third branch 275 can be grounded through the third grounding point 274.

[0081] In some embodiments, a first grounding point 271 may also be provided on the first branch 201, and the first grounding point 271 is located on the side of the first feeding point 281 away from the second branch 202. The first branch 201 can be grounded through the first grounding point 271. A second grounding point 272 may also be provided on the second branch 202, and the second grounding point 272 is provided on the side of the detection connection point 2021 close to the first branch 201. The second branch 202 can be grounded through the second grounding point 272.

[0082] Optionally, the antenna assembly may further include a third matching circuit 273, and the second branch 202 can be grounded through the third matching circuit 273. Among them, the third matching circuit 273 may exhibit a characteristic of low impedance to the ground for the excitation signal in the second frequency band fed into the second branch 202 by the second feed source 204, so that the excitation signal in the second frequency band can be grounded. Another example is that the third matching circuit 273 may also ground part of the excitation signal in the first frequency band coupled by the second branch 202 through the gap 206.

[0083] The electronic device provided by the present application includes: an antenna component and a detection component. The antenna component includes a first branch, a second branch, a first power feed source, and a second power feed source. The detection component includes a detection chip and a filtering circuit. The first power feed source is connected to the first power feed point and is used to feed an excitation signal of a first frequency band into the first branch to excite the first branch to form a resonance of the first frequency band. The second power feed source is connected to the second power feed point and is used to feed an excitation signal of a second frequency band into the second branch to excite the second branch to form a resonance of the second frequency band. Herein, at least part of the first frequency band and the second frequency band overlap. The filtering circuit is connected between the detection chip and the detection connection point and is grounded. The filtering circuit forms a low impedance characteristic to the ground for the signals of the overlapping frequency bands and forms a high impedance characteristic to the ground for the detection signals. Since the excitation signal of the first frequency band fed by the first power feed source into the first branch and the excitation signal of the second frequency band fed by the second power feed source into the second branch include at least part of the overlapping frequency bands, and the excitation signals of the overlapping frequency bands are prone to interfere with each other, resulting in a decrease in the isolation degree of the first power feed source and the second power feed source corresponding to the overlapping frequency bands. Therefore, in the present application, the filtering circuit forms a low impedance characteristic to the ground for the signals of the overlapping frequency bands, so that the signals of the overlapping frequency bands can be grounded through the filtering circuit, which can reduce the mutual interference of the signals of the overlapping frequency bands to a certain extent, and further improve the isolation degree of the signals of the overlapping frequency bands corresponding to the first power feed source and the second power feed source.

[0084] As described above, it is only a specific embodiment of the present application and does not impose any formal limitation on the present application. Although the present application has been disclosed above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some modifications or decorations to equivalent variations within the scope of the technical solution of the present application by using the technical content disclosed above. However, as long as it does not depart from the content of the technical solution of the present application, any brief modification, equivalent variation, and decoration made to the above embodiments according to the technical essence of the present application still fall within the scope of the technical solution of the present application.

Claims

1. An electronic device, characterized in that, Comprising: An antenna assembly, including, A first stub, the first stub being provided with a first feeding point; A second stub, opposite to the first stub and having a gap formed therebetween, the second stub being provided with a second feeding point, a detection connection point and an isolation point, the second feeding point being located on a side of the detection connection point away from the first stub, and the isolation point being located on a side of the second feeding point facing the first stub; A first feeding power source, connected to the first feeding point, for feeding an excitation signal of a first frequency band into the first stub to excite the first stub to form a resonance of the first frequency band; A second feeding power source, connected to the second feeding point, for feeding an excitation signal of a second frequency band into the second stub to excite the second stub to form a resonance of the second frequency band, wherein the first frequency band and the second frequency band include at least partially overlapping frequency bands; An isolation circuit, the isolation circuit being connected to the isolation point and grounded, and the isolation circuit forming a low impedance characteristic to the ground for signals of the overlapping frequency band; The isolation circuit includes a first filtering circuit and a second filtering circuit, the isolation point includes a first filtering point and a second filtering point, the second filtering point is located on a side of the first filtering point away from the first stub, the first filtering point is located on a side of the detection connection point facing the first stub, and the second filtering point is located on a side of the detection connection point away from the first stub; The first filtering circuit is connected to the first filtering point and grounded, and the first filtering circuit forms a low impedance characteristic to the ground for signals of the overlapping frequency band; The second filtering circuit is connected to the second filtering point and grounded, and the second filtering circuit forms a low impedance characteristic to the ground for signals of the overlapping frequency band; A detection assembly, including, A detection chip for detecting a detection signal of a third frequency band induced by the second stub; A filtering circuit, the filtering circuit being connected between the detection chip and the detection connection point and grounded, the filtering circuit forming a low impedance characteristic to the ground for signals of the overlapping frequency band and a high impedance characteristic to the ground for the detection signal.

2. The electronic device according to claim 1, wherein The conduction frequency band of the first filtering circuit is the same as the overlapping frequency band.

3. The electronic device according to claim 1, wherein The conduction frequency band of the second filtering circuit is the same as the overlapping frequency band.

4. The electronic device according to claim 1, wherein The filtering circuit includes a first capacitor, one end of the first capacitor is connected to the input end of the detection chip, and the other end is grounded; The first capacitor forms a low impedance characteristic to the ground for signals of the overlapping frequency band and a high impedance characteristic to the ground for the detection signal.

5. The electronic device according to claim 4, wherein The detection assembly further includes a first inductor, one end of the first inductor is connected to one end of the first capacitor, and the other end is connected to the input end of the detection chip; The first inductor forms a high impedance characteristic to the ground for signals of the overlapping frequency band and a low impedance characteristic to the ground for the detection signal.

6. The electronic device according to claim 1, characterized in that, The first frequency band includes a medium high frequency band and a super high frequency band, and the second frequency band includes a super high frequency band; The overlapping frequency band is the N78 frequency band.

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