Electronic equipment

Abstract

The invention provides electronic equipment which comprises a first side edge, a second side edge and a third side edge which are connected in sequence, and the length of the second side edge is larger than the length of the first side edge and the length of the third side edge; the main radiation branch knot is arranged on the second side edge, the main radiation branch knot comprises a first open end and a first grounding point, the first grounding point is grounded, the first grounding point is closer to the third side edge than the first open end, the main radiation branch knot forms first resonance, and the first resonance has a first center frequency; the parasitic radiation branch knot is arranged on the second side edge and comprises a second open end and a second grounding point, a gap is formed between the second open end and the first open end, the parasitic radiation branch knot is coupled with the main radiation branch knot through the gap, the second grounding point is grounded, and the second grounding point is closer to the first side edge than the second open end; the parasitic radiation branch forms a second resonance, the second resonance has a second center frequency, and the second center frequency is greater than the first center frequency. The radiation efficiency of the radiation branch knot can be improved.

Description

Technical Field

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

[0002] With the development of communication technologies, electronic devices such as smart phones can implement more and more functions, and the communication modes of electronic devices are also more diversified. It can be understood that each communication mode of an electronic device requires a corresponding antenna to support. In the related art, an electronic device uses a metal frame with a slit to form a radiation stub for signal transmission and reception. However, the radiation efficiency of the radiation stub is relatively low. Summary of the Invention

[0003] This application provides an electronic device, which can improve the radiation efficiency of the radiation stub by reasonably arranging the radiation stub.

[0004] This application provides an electronic device, including:

[0005] A first side, a second side, and a third side connected in sequence, where the length of the second side is greater than the lengths of the first side and the third side;

[0006] A main radiation stub disposed on the second side, the main radiation stub including a first open end and a first grounding point, the first grounding point being grounded, the first grounding point being closer to the third side than the first open end, the main radiation stub forming a first resonance, and the first resonance having a first center frequency;

[0007] A parasitic radiation stub disposed on the second side, the parasitic radiation stub including a second open end and a second grounding point, there being a gap between the second open end and the first open end, the parasitic radiation stub being coupled to the main radiation stub through the gap, the second grounding point being grounded, the second grounding point being closer to the first side than the second open end, the parasitic radiation stub forming a second resonance, and the second resonance having a second center frequency, and the second center frequency being greater than the first center frequency.

[0008] In the embodiments of the present application, the radiating stub includes not only the main radiating stub, but also the parasitic radiating stub. The main radiating stub and the parasitic radiating stub are coupled through a slot. The ends of the main radiating stub and the parasitic radiating stub that are away from the slot are grounded respectively. The center frequency of the second resonance formed by the parasitic radiating stub is higher than the center frequency of the first resonance formed by the main radiating stub, so that the current directions of the main radiating stub and the parasitic radiating stub are the same. The second resonance formed by the parasitic radiating stub will not directly affect the first resonance formed by the main radiating stub, and basically will not cause frequency deviation of the first center frequency of the first resonance formed by the main radiating stub. Moreover, the second resonance of the parasitic radiating stub can also play a positive enhancement role in the radiation efficiency of the first resonance of the main radiating stub, thereby improving the radiation efficiency of the main radiating stub. In the embodiments of the present application, the main radiating stub and the parasitic radiating stub are located on the long side of the electronic device, and the length of the long side is relatively long. Therefore, the positions of the main radiating stub, the slot and the parasitic radiating stub on the second side can be adjusted flexibly and reasonably. When an external object supports the electronic device, such as when a user holds the electronic device by hand, the user's hand can be staggered from the slot and at least partially in contact with the parasitic radiating stub. It can be understood that when an external object such as the user's hand holds the electronic device and avoids the slot, it can avoid affecting the radiation efficiency of the main radiating stub. Moreover, the dielectric constant of the user's hand is relatively high. When at least part of the parasitic radiating stub is held by the user's hand, the center frequency of the second resonance formed by the parasitic radiating stub will also shift towards the center frequency of the first resonance formed by the main radiating stub. Therefore, the positive enhancement effect on the radiation efficiency of the main radiating stub can be further strengthened, thereby further improving the radiation efficiency of the main radiating stub. Moreover, both the main radiating stub and the parasitic radiating stub contribute to the overall radiation, and can enhance the overall radiation efficiency of the radiating stub. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 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 drawings in the following description 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.

[0010] Figure 1 FIG. 1 is a schematic diagram of the first structure of the electronic device provided by the embodiment of the present application.

[0011] Figure 2 FIG. 2 is a schematic diagram of the first structure of the electronic device in the related art.

[0012] Figure 3 FIG. 3 is a schematic diagram of the second structure of the electronic device in the related art.

[0013] Figure 4The second structural schematic diagram of the electronic device provided by the embodiment of the present application.

[0014] Figure 5 The schematic diagram of the comparison of the radiation efficiency curves of the radiation stub of the embodiment of the present application and the radiation stub of the related technology.

[0015] Figure 6 The schematic diagram of the comparison of the radiation efficiency curves of the radiation stub when the lengths of the parasitic radiation stubs provided by the embodiments of the present application are different.

[0016] Figure 7 The schematic diagram of the comparison of the total radiation efficiency curves of the radiation stub when the lengths of the parasitic radiation stubs provided by the embodiments of the present application are different.

[0017] Figure 8 The schematic diagram of the comparison of the radiation efficiency of the radiation stub in different scenarios provided by the embodiments of the present application.

[0018] Figure 9 The third structural schematic diagram of the electronic device provided by the embodiment of the present application. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying Figure 1 to the accompanying Figure 9 . Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0020] Referring to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] The embodiments of the present application provide an electronic device. The electronic device can be a device such as a smart phone, a tablet computer, etc., and can also be a game device, an augmented reality device, an automotive device, a data storage device, an audio playback device, a video playback device, a notebook computer, a desktop computing device, etc.

[0022] Please refer to Figure 1 , Figure 1The first structural schematic diagram of the electronic device provided by the embodiment of the present application. The electronic device 10 includes a first side 211, a second side 212, and a third side 213 connected in sequence. The length of the second side 214 is greater than the lengths of the first side 211 and the third side 213. For example, the electronic device 10 includes a frame 210 with multiple interconnected sides. The first side 211, the second side 212, and the third side 213 can be the bottom side, the long side, and the top side of the electronic device 10 respectively. Among them, the second side 212 can be the left long side or the right long side of the electronic device 10.

[0023] The radiation stub 100 of the electronic device 10 includes a main radiation stub 110 and a parasitic radiation stub 120. Among them, the main radiation stub is disposed on the second side 212. The main radiation stub 110 includes a first open end 112 and a first ground point 111. The first ground point 111 is grounded. The first ground point 111 is closer to the third side 213 than the first open end 112. The main radiation stub 110 forms a first resonance, and the first resonance has a first center frequency.

[0024] The parasitic radiation stub 120 is disposed on the second side 212. The parasitic radiation stub 120 includes a second open end 122 and a second ground point 121. There is a gap 130 between the second open end 122 and the first open end 112. The parasitic radiation stub 120 is coupled to the main radiation stub 110 through the gap 130. The second ground point 121 is grounded. The second ground point 121 is closer to the first side 211 than the second open end 122. For example, the ends of the main radiation stub 110 and the parasitic radiation stub 120 that are away from the gap 130 are grounded. The parasitic radiation stub 120 forms a second resonance, and the second resonance has a second center frequency, and the second center frequency is greater than the first center frequency.

[0025] When the radiation stub 100 of the embodiment of the present application is in a free space state, the main radiation stub 110 forms a first resonance, and the parasitic radiation stub 120 forms a second resonance. The first center frequency of the first resonance is higher than the second center frequency of the second resonance. That is, the main radiation stub 110 generates a first resonance within a first frequency band, and the parasitic radiation stub 120 generates a second resonance within a second frequency band. The second frequency band is higher than the first frequency band. The second resonance formed by the parasitic radiation stub 120 does not directly affect the first resonance formed by the main radiation stub 110, and the parasitic radiation stub 120 does not cause a frequency deviation in the first resonance of the main radiation stub 110. Moreover, based on the structures of the main radiation stub 110 and the parasitic radiation stub 120 in the embodiment of the present application, and keeping the first frequency band of the main radiation stub 110 lower than the second frequency band of the parasitic radiation stub 120, the current directions of the main radiation stub 110 and the parasitic radiation stub 120 are the same. For example, at a certain moment, the current direction of the main radiation stub 110 is from the first ground point 111 towards the first free end 112, and the current direction of the parasitic radiation stub 120 is from the second free end 122 towards the second ground point 121. At another moment, the current direction of the main radiation stub 110 is from the first free end 112 towards the first ground point 111, and the current direction of the parasitic radiation stub 120 is from the second ground point 121 towards the second free end 122. Therefore, the parasitic radiation stub 120 can play a positive enhancement role in the radiation efficiency of the main radiation stub 110, thereby improving the radiation efficiency of the main radiation stub 110.

[0026] Please refer to Figure 2 , Figure 2 FIG. 1 is a schematic structural diagram of a first type of electronic device in the related art. In the related art, the radiation stub 700 of the electronic device 20 only includes a main radiation stub. A slit is opened below the radiation stub 700, but no parasitic radiation stub is provided. Without a parasitic radiation stub, it cannot play a positive enhancement role in the radiation efficiency of the radiation stub. Even when the radiation stub 700 is in a free space state, in the entire mid-high frequency band, the radiation efficiency of the radiation stub 100 in the embodiment of the present application is higher than that of the radiation stub 700 in the related art.

[0027] In an embodiment of the present application, the radiation branch 110 and the parasitic radiation branch 120 are both arranged on the second side 212 of the electronic device 10 and are coupled through the gap. It can be understood that the second side 212 is a long side with a longer length, so the positions of the main radiation branch 110, the gap and the parasitic radiation branch 120 on the second side 212 can be flexibly adjusted, so that when an external object supports the electronic device 10, the external object can be offset from the gap 130 and at least partially in contact with the parasitic radiation branch 120. Exemplarily, the external object may be, for example, a user's hand. By reasonably adjusting the positions of the main radiation branch 110 and the parasitic radiation branch 120, when the user's hand holds the electronic device 10, the user's hand contacts the parasitic radiation branch 120, and the gap 130 is offset from the user's hand. The external object, such as the user's hand, can avoid the gap 130 when holding the electronic device 10, thereby avoiding affecting the radiation efficiency of the main radiation branch 110. Moreover, the dielectric constant of the user's hand is relatively high. When the parasitic radiation branch 120 is held by the user's hand, the center frequency of the second resonance formed by the parasitic radiation branch 120 will shift toward the center frequency of the first resonance formed by the main radiation branch 110. Therefore, the positive enhancement effect on the radiation efficiency of the main radiation branch 110 can also be further enhanced, thereby further improving the radiation efficiency of the main radiation branch 110. Moreover, both the main radiation branch 110 and the parasitic radiation branch 120 contribute to the overall radiation, thereby enhancing the overall radiation efficiency of the radiation branch 100.

[0028] Please refer to Figure 3 and Figure 4 , Figure 3 is a second structural schematic diagram of an electronic device in the related art, Figure 4 A second structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0029] In one embodiment, the second side 212 has a preset area, which is an area in contact with the second side when an external object supports the electronic device, at least part of the parasitic radiation branches are arranged in the preset area, and the gap is staggered with the preset area.

[0030] The external object may be, for example, a user's hand, or an object such as a bracket. Exemplarily, the external object is a user's hand, the user's hand holds the electronic device 10 in the right hand, and the second side 212 is the right side of the electronic device 10. When the user's hand normally holds the electronic device 10, it will contact the second side 212. The relative position where the user's hand contacts the second side 212 is called a preset area, and the circled area in the figure is the preset area. It should be noted that the embodiment of the present application does not limit the position of the specific preset area. Based on the size of the general user's palm and the length of the second side 212 of different electronic devices 10, the preset area of ​​the second side 212 of different electronic devices can be predetermined. For example, if the length of the second side is 15 cm, then from the first side 211 toward the third side 213, the preset area can be located at 7 cm to 9 cm in the approximate middle area of ​​the second side 212.

[0031] Please refer to Figure 3 In the related art, the gap is located in the preset area, so the gap is easily blocked by the user's hand, which greatly reduces the radiation capacity of the radiation branch 700. The radiation efficiency of the radiation branch 700 decreases at medium and high frequencies, and obvious fluctuations occur.

[0032] Please refer to Figure 4 In the embodiment of the present application, the second side 212 is a long side with a long length, and the positions of the main radiation branch 110, the gap 130 and the parasitic radiation branch 120 on the second side 212 can be flexibly adjusted. For example, in the embodiment of the present application, the main radiation branch 110 and the gap 130 are moved upward, and the position of the gap 130 no longer falls into the preset area. The parasitic radiation branch 120 is added below the gap 130, and at least part of the parasitic radiation branch 120 can be located in the preset area. Therefore, under normal circumstances, when the user's hand holds the electronic device 10, the user's hand contacts the parasitic radiation branch 120, and the gap 130 is staggered with the user's fingers. For example, the gap 130 is located above the user's fingers, which can prevent the user's hand from blocking the gap 130 and improve the radiation efficiency of the radiation branch.

[0033] For example, please continue to refer to Figure 3 and Figure 4 , the electronic device 10 further includes a battery 500, the battery 500 is disposed adjacent to the second side 212, the main radiation branch 110 is provided with a feeding point, the feeding point is connected to a feed source, and the feeding point is located on the side of the orthographic projection of the battery 500 on the second side 212 toward the third side 213. For example, taking the battery 500 of the electronic device 10 as a reference, when the user's hand holds the electronic device 10 under normal circumstances, the preset area is approximately located in the middle area of ​​the orthographic projection of the battery 500 on the second side 212 as an example for explanation, from Figure 3It can be seen that in the related art, the radiating branches 700 only include main radiating branches, most of the radiating branches 700 are arranged within the orthographic projection of the battery 500 on the second side 212, the feeding points of the radiating branches 700 are also arranged within the orthographic projection of the second side 212, and the gap 130 is located below the radiating branches 700 and is also easy to fall into the hand-holding area, so the gap is easily blocked when the user holds the electronic device.

[0034] In the embodiment of the present application, the main radiation branch 110 and the gap 130 are moved upward, and most of the main radiation branch 110 is arranged above the positive projection of the battery 500 on the second side 212. The feeding point is still arranged on the main radiation branch 110, but due to the upward movement, the feeding point is also adjusted to the position of the battery 500 above the positive projection of the second side 212. The position of the gap 130 no longer falls into the preset area, and a parasitic radiation branch 120 is added below the gap 130, and the parasitic radiation branch 120 is located in the preset area. Therefore, under normal circumstances, when the user's hand holds the electronic device 10, the user's hand contacts the parasitic radiation branch 120, and the gap 130 is staggered with the user's fingers. For example, the gap 130 is located above the user's fingers, which can avoid the user's hand from blocking the gap 130 and improve the radiation efficiency of the radiation branch.

[0035] In one embodiment, when at least a portion of the parasitic radiation branches are blocked by the external object, the second resonance has a third center frequency, and the third center frequency is smaller than the second center frequency and larger than the first center frequency.

[0036] When the parasitic radiation stub 120 is not blocked by an external object during the implementation of this application, the second resonance has a second center frequency. When the parasitic radiation stub 120 is at least blocked by an external object, the second resonance has a third center frequency. The third center frequency is less than the second center frequency and greater than the first center frequency. The dielectric constant of the external object is higher than that of the parasitic radiation stub 120. It can be understood that the main radiation stub 110 is not blocked by an external object, so it does not affect the radiation of the main radiation stub 110 itself. The first center frequency of the first resonance remains basically unchanged. However, the parasitic radiation stub 120 is clamped by an external object with a higher dielectric constant, and the center frequency of the second resonance shifts towards the first center frequency of the first resonance, adjusting from the second center frequency to the third center frequency. The third center frequency is closer to the first center frequency of the first resonance than the second center frequency. Therefore, the positive enhancement effect on the radiation efficiency of the main radiation stub 110 is further strengthened, which can further improve the radiation efficiency of the main radiation stub 110 and also further enhance the overall radiation efficiency of the radiation stub 100. Therefore, in the embodiment of this application, by arranging the main radiation stub 110 and the parasitic radiation stub 120 on the long side and reasonably arranging the positions of the main radiation stub 110 and the parasitic radiation stub 120, the radiation stub 100 of the embodiment of this application has better hand-holding performance, and the human hand characteristics can be used to improve the radiation efficiency of the main radiation stub 110 and the overall radiation efficiency of the radiation stub 100.

[0037] Exemplarily, please refer to Figure 5 , Figure 5Schematic diagram of the comparison of the radiation efficiency curves of the radiation stub of the embodiment of the present application and the radiation stub of the related art. Among them, curve L1 is the radiation efficiency curve of the radiation stub of the related art in the free space state, curve L2 is the radiation efficiency curve of the radiation stub of the embodiment of the present application in the free space state, and curve L3 is the radiation efficiency curve of the radiation stub of the embodiment of the present application in the state of being held by a user's hand. Among them, for example, the frequency band of the first resonance is the B3 frequency band (1730 MHz to 1879 MHz), and the frequency band of the second resonance is the N78 frequency band (3300 MHz to 3800 MHz). It can be seen from curve L1 that since the radiation stub 700 in the related art only includes the main radiation stub and does not have a parasitic radiation stub, a resonance will be formed in the B3 frequency band for the radiation stub 700. The radiation stub 100 of the embodiment of the present application includes a main radiation stub 110 and a parasitic radiation stub 120. It can be seen from curve L2 that the main radiation stub 110 will form a first resonance in the B3 frequency band, and the parasitic radiation stub 120 will also form a second resonance in the N78 frequency band, and the frequency band where the second resonance is located is higher than the frequency band where the first resonance is located, so that the currents of the main radiation stub 110 and the parasitic radiation stub 120 are in the same direction, and the parasitic radiation stub 120 can play a positive enhancement role in the radiation efficiency of the main radiation stub 110, thereby being able to improve the radiation efficiency of the main radiation stub 110, and both the main radiation stub 110 and the parasitic radiation stub 120 contribute to the overall radiation, and can play the effect of enhancing the overall radiation efficiency of the radiation stub 100. Therefore, it can be seen from the comparison between curve L1 and curve L2 that the radiation efficiency of the radiation stub 100 in the free space state in the embodiment of the present application is higher than the radiation efficiency of the radiation stub 700 in the free space state in the related art. Further, it can be seen from curve L3 that when the parasitic radiation stub 120 is blocked by an external object with a relatively high dielectric constant, for example, when a user's hand holds the parasitic radiation stub 120, the parasitic radiation stub 120 cooperates with the user's hand and uses the characteristics of the user's hand to change the environment of the parasitic radiation stub 120, so that the center frequency of the second resonance shifts towards the first center frequency of the first resonance, and the center frequency of the second resonance is closer to the center frequency of the first resonance, strengthening the positive enhancement effect of the radiation efficiency brought by the second resonance. Therefore, it can be seen from the comparison between curve L2 and curve L3 that compared with the scenario where the parasitic radiation stub 120 is not held by the user, when the user's hand holds the parasitic radiation stub 120, the radiation efficiency of the radiation stub 100 is higher.

[0038] The radiation branch 100 of the embodiment of the present application includes a main radiation branch 110 and a parasitic radiation branch 120. Exemplarily, the length of the parasitic radiation branch 120 is not greater than 3 / 4 of the length of the main radiation branch 110. For example, the length of the parasitic radiation branch 120 may be approximately 1 / 4, 1 / 2, etc. of the length of the main radiation branch 110. By designing the parasitic radiation branch 120, the radiation efficiency of the main radiation branch 110 can be enhanced without directly affecting the radiation of the main radiation branch 110 itself. However, if the parasitic radiation branch 120 is too long, the second resonance of the parasitic radiation branch 120 is close to the first resonance of the main radiation branch 110. The first resonance and the second resonance will affect each other, which will affect the radiation efficiency of the main radiation branch 110. Therefore, in the embodiment of the present application, on the basis that the parasitic radiation branch 120 does not directly affect the first resonance radiation of the main radiation branch 110 itself, the length of the parasitic radiation branch 120 is set to be not greater than 3 / 4 of the length of the main radiation branch 110. Please refer to Figure 6 , Figure 6 A schematic diagram comparing radiation efficiency curves of radiation branches when the lengths of parasitic radiation branches are different provided in an embodiment of the present application. For example, the length of the main radiation branch 110 is about 20 mm, and the user holds the parasitic radiation branch 120 in his hand and staggers it with the gap 130, wherein curve L4 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 3 mm, curve L5 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 6 mm, curve L6 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 9 mm, curve L7 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 12 mm, curve L8 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 15 mm, curve L9 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 18 mm, and curve L10 is the radiation efficiency curve when the radiation branch does not have the parasitic radiation branch 120 in the related art. Figure 4It can be seen that as the length of the parasitic radiation branch 120 increases, the center frequency of the second resonance formed by the parasitic radiation branch 120 is closer to the first center frequency of the first resonance formed by the main radiation branch 110. When the length of the parasitic radiation branch 120 is not more than 15 mm, the radiation efficiency of the first resonance of the main radiation branch 110 is improved, and the first center frequency offset of the main radiation branch 110 is small, which basically does not affect the radiation of the first resonance formed by the main radiation branch 110 itself. When the length of the parasitic radiation branch 120 reaches 18 mm, although the radiation efficiency of the first resonance of the main radiation branch 110 is still higher than the radiation efficiency when there is no parasitic radiation branch 120, the second resonance is too close to the first resonance, which affects the first resonance formed by the main radiation branch 110 itself, causing the center frequency of the first resonance to shift to a low frequency. For example, the frequency band of the first resonance is the B3 frequency band. After the offset, the frequency band of the first resonance will be lower than the B3 frequency band. Therefore, an excessively long parasitic radiation branch 120 will affect the radiation of the main radiation branch 110 itself.

[0039] For example, please refer to Figure 7 , Figure 7 A schematic diagram for comparing total radiation efficiency curves of radiation branches with different lengths of parasitic radiation branches provided in an embodiment of the present application. For example, the length of the main radiation branch 110 is about 20 mm, and the user holds the parasitic radiation branch 120 in his hand and staggers it with the gap 130, wherein curve L11 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 3 mm, curve L12 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 6 mm, curve L13 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 9 mm, curve L14 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 12 mm, curve L15 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 15 mm, curve L16 is the radiation efficiency curve when the length of the parasitic radiation branch 120 is about 18 mm, and curve L17 is the radiation efficiency curve when the radiation branch in the related art does not have the parasitic radiation branch 120. For example, the first resonant frequency band of the main radiation branch 110 is the B3 frequency band, from Figure 7It can be seen that under the combined action of the parasitic radiation stub 120 and the main radiation stub 110 in the embodiments of the present application, compared with the case where the parasitic radiation stub 120 is not provided, the radiation efficiency of the radiation stub in the B3 band is enhanced. However, as the length of the parasitic radiation stub 120 increases, for example, when the length of the parasitic stub is 18 mm, since the second resonance of the parasitic radiation stub 120 is too close to the first resonance of the main radiation stub 110, which affects the first resonance, the radiation efficiency of the radiation stub in the B3 band decreases instead. The embodiments of the present application consider that when the parasitic radiation stub 120 is too long, it will affect the main radiation stub 110. Therefore, the length of the parasitic radiation stub 120 can be flexibly set according to the frequency band of the main radiation stub 110. For example, the length of the parasitic radiation stub 120 can be set to about 1 / 4 of the length of the main radiation stub 110. For example, the length of the parasitic radiation stub 120 is set to about 6 mm. At this time, not only the radiation efficiency in the B3 band is improved, but also the radiation efficiency is improved in the entire MHB band.

[0040] Exemplarily, the main radiation stub 110 generates a first resonance in a first frequency band, and the parasitic radiation stub 120 generates a second resonance in a second frequency band, where the first frequency band includes the B3 band, and the second frequency band includes the N78 band. It should be noted that the embodiments of the present application do not limit the first frequency band and the second frequency band, not only limited to the B3 band and the N78 band, nor limited to the MHB band, and can also be set as needed for transmitting, for example, Wi-Fi signals, GPS signals, 3G signals, 4G signals, 5G signals, NFC signals, Bluetooth signals, UWB signals, etc., and can also be applicable to low-frequency antennas and other SUB6G antennas, etc.

[0041] Exemplarily, the electronic device 10 may further include an adjustment circuit (not shown in the figure). The adjustment circuit is connected to the main radiation stub 110, and the main radiation stub 110 changes the first center frequency of the first resonance through the adjustment circuit. For example, the adjustment circuit may include a switch, and the first center frequency of the first resonance can be flexibly adjusted through the switch. That is, the main radiation stub 110 can make the first resonance have an adjustable range through the switch, so that the first resonance of the main radiation stub 110 can be in different frequency bands within the adjustable range. Based on the adjustable range of the first resonance of the main radiation stub 110, the length of the parasitic stub 120 is set comprehensively, so that the radiation efficiency is improved when the first resonance is in each frequency band.

[0042] Exemplarily, any one of the first center frequencies of the first resonance is less than the third center frequency or the second center frequency of the second resonance. That is, even if the tuning circuit can adjust the first resonance of the main radiation branch 110 to the highest frequency band within the adjustable range, the frequency band of the second resonance of the parasitic radiation branch 120 is still higher than the highest frequency band that the first resonance can reach. Moreover, even if the parasitic radiation branch 120 is blocked by an external object with a relatively high dielectric constant, and the center frequency of the second resonance shifts from the second center frequency to the lower frequency to the third center frequency, the third center frequency of the second resonance is still higher than the first center frequency of the first resonance. It can also be understood that there is a frequency band difference between the second resonance of the parasitic radiation branch 120 and the first resonance of the main radiation branch 110, and this frequency band difference is greater than a preset difference, so as to ensure that even if the parasitic radiation branch 120 is held by an external object and the frequency band of the second resonance shifts to the lower frequency, the frequency band after the shift of the second resonance is still higher than the frequency band of the first resonance.

[0043] It should be noted that when the second center frequency or the third center frequency of the second resonance is higher than the first center frequency of the first resonance, the currents at the first resonance and the second resonance are in the same direction, and the second resonance plays a positive role in enhancing the radiation efficiency of the first resonance. If the second center frequency or the third center frequency of the second resonance is lower than the first center frequency of the first resonance, the currents at the first resonance and the second resonance are in the opposite direction, and the parasitic radiation branch 120 will cause a pit in the radiation efficiency of the main radiation branch 110, reducing the radiation efficiency of the main radiation branch 110.

[0044] It should be noted that the main purpose of adding the parasitic radiation branch 120 in the embodiment of the present application is to improve the radiation efficiency of the main radiation branch 110, rather than to cover more radiation frequency bands through the parasitic radiation branch 120. Therefore, it is not necessary to set the second resonance of the parasitic radiation branch 120 to be in a specific frequency band. It only needs that the length of the parasitic radiation branch 120 is less than that of the main radiation branch 110, and the frequency band of the second resonance is higher than that of the first resonance.

[0045] Please refer to Figure 8 , Figure 8Schematic diagram of the radiation efficiency comparison of the radiation stub provided in the embodiments of the present application in different scenarios. Among them, curve L18 is the radiation efficiency curve of the radiation stub in the prior art in the free space state, curve L19 is the radiation efficiency curve of the radiation stub in the prior art in the held state, curve L20 is the radiation efficiency curve of the radiation stub in the embodiments of the present application in the free space state, and curve 21 is the radiation efficiency curve of the radiation stub in the embodiments of the present application in the held state. It can be seen from curve L18 and curve L19 that in the prior art, when the user holds the electronic device 10 vertically with the hand and the gap 130 is held by the user's finger, the radiation ability of the radiation stub 700 is greatly reduced, the radiation efficiency of the radiation stub 700 decreases at medium and high frequencies, and obvious fluctuations occur. It can be seen from comparing curve L20 and curve L21 with curve L18 and curve L19 that the radiation stub 100 in the embodiments of the present application has been improved in the entire MHB full frequency band. For example, in the B3 frequency band, the radiation efficiency of the radiation stub 100 in the held state in the embodiments of the present application is about 1.5 dB higher than that of the radiation stub 700 in the held state in the prior art.

[0046] It should be noted that the frame 210 of the electronic device may further include a fourth side 214. The radiation stubs of the embodiments of the present application may also be located on the first side 211, the third side 213, and the fourth side 214. Considering the relative positions where external objects contact each side of the electronic device 10 in different scenarios, the positions of the main radiation stub 110, the slot 130, and the parasitic radiation stub 120 are adjusted. The ground connection design of the parasitic radiation stub 120 is at one end of the parasitic radiation stub 120 away from the slot 130, so that when an external object contacts the parasitic radiation stub 120, it is staggered from the slot 130. For example, the bracket is a accessory of the electronic device 10. When the bracket clamps the electronic device 10, the bracket contacts the middle area of the first side 211 and / or the third side 213 of the electronic device 10. Therefore, the main radiation stub 110 located on the first side 211 and / or the third side 213 can be relatively offset from the middle area and the slot 130 can be staggered from the bracket, and the parasitic radiation stub 120 is approximately in the middle area, so that the bracket contacts at least part of the parasitic radiation stub 120. Another example is that when in a gaming scenario, the user generally holds the electronic device 10 horizontally with the hand, and the user's hand contacts the connection area between adjacent sides of the electronic device 10. Therefore, the distributions of the main radiation stub 110, the slot 130, and the parasitic radiation stub 120 can be adjusted on two adjacent sides. The parasitic radiation stub 120 is located in the connection area, so that when the user holds the electronic device 10 horizontally with the hand, the user's hand holds the parasitic radiation stub 120 and the slot 130 is staggered from the user's hand. In addition, it should be noted that in the embodiments of the present application, the electronic device 10 may be provided with multiple radiation stubs 100. The positions of the main radiation stub 110 and the slot 130 can be reasonably set for any one of the radiation stubs 100 as needed, and the parasitic radiation stub 120 is added, so that when an external object is needed during the normal use process of the electronic device 10, the external object can avoid the slot 130 and contact the parasitic radiation stub 120, and the frequency band of the parasitic radiation stub 120 is higher than that of the main radiation stub 110.

[0047] Please refer to Figure 9 , Figure 9 FIG. 3 is a schematic diagram of a third structure of the electronic device provided by the embodiment of the present application. The electronic device 10 may further include a middle frame 200, a display screen 300, a circuit board 400, a battery 500, and a rear case 600.

[0048] The display screen 300 is disposed on the middle frame 200 to form a display surface of the electronic device 10 for displaying information such as images and texts. Among them, the display screen 300 may include a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen and other types of display screens.

[0049] The middle frame 200 may include the aforementioned frame 210 and the middle plate 220. The frame 210 may be a hollow frame structure and form the outer frame of the electronic device 10, and the middle plate 220 may be a thin plate or sheet-like structure. The middle frame 200 is used to provide support for the electronic components or functional components in the electronic device 10 to assemble the electronic components and functional components of the electronic device 10 together. For example, structures such as grooves, protrusions, and through holes may be provided on the middle frame 200 to facilitate the installation of the electronic components or functional components of the electronic device 10. It can be understood that when the frame 210 includes a metal material, that is, when multiple sides include a metal material, the main radiation branch 110 and the parasitic radiation branch 120 may be two metal branches on one side, or two metal branches on two adjacent sides. It should be noted that the main radiation branch 110 and the parasitic radiation branch 120 may also be arranged on different sides in other ways, such as in the form of patches. The embodiments of the present application do not limit this.

[0050] The circuit board 400 is disposed on the middle frame 200 for fixation, and the circuit board 400 is sealed inside the electronic device 10 by the rear shell 600. A processor may be integrated on the circuit board 400. In addition, one or more of functional components such as a headphone jack, an acceleration sensor, a gyroscope, and a motor may also be integrated. At the same time, the display screen 300 may be electrically connected to the circuit board 400 to control the display of the display screen 300 through the processor on the circuit board 400. It can be understood that components such as the feeding point and the adjustment circuit in the above embodiments may be disposed on the circuit board 400. Of course, the above components may also be disposed on a small board of the electronic device 10, and this is not limited herein.

[0051] The battery 500 is disposed on the middle frame 200, and the battery 500 is sealed inside the electronic device 10 by the rear shell 600. At the same time, the battery 500 is electrically connected to the circuit board 400 to enable the battery 500 to supply power to the electronic device 10. Among them, a power management circuit may be provided on the circuit board 400. The power management circuit is used to distribute the voltage provided by the battery 500 to each electronic component in the electronic device 10.

[0052] The rear shell 600 is connected to the middle frame 200. For example, the rear shell 600 may be attached to the middle frame 200 through an adhesive such as double-sided tape to achieve connection with the middle frame 200. Among them, the rear shell 600 is used to jointly seal the electronic components and functional components of the electronic device 10 inside the electronic device 10 with the middle frame 200 and the display screen 300 to protect the electronic components and functional components of the electronic device 10.

[0053] It can be understood that the ground system (not marked in the figure) of the embodiments of the present application can be formed by conductors, printed circuits, or metal printed layers in the electronic device 10. The ground system can be formed on the rear shell 600, the circuit board 400, the middle plate 220 of the middle frame 200, or other carrier boards of the electronic device 10. For example, a conductor region with a potential of zero can be set on the carrier board, the rear shell 600, the circuit board 400, or the middle plate 220, and the ground system 240 can be set on this conductor region.

[0054] It can be understood that the above is only an exemplary example of the electronic device 10. The electronic device 10 of the embodiments of the present application may further include components such as a camera, a sensor, and an acoustic-electric conversion device. The descriptions of these components can be referred to in the related art and will not be elaborated here.

[0055] It should be noted that the above embodiments can be combined arbitrarily on the premise of not conflicting, and the combined embodiment solutions are still within the protection scope of the embodiments of the present application. It should be understood that in the description of the present application, terms such as "first" and "second" are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0056] The above has introduced the electronic device provided by the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The descriptions of the above embodiments are only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be understood as a limitation to the present application.

Claims

1. An electronic device, characterized in that, Comprising: A first side, a second side, and a third side connected in sequence, wherein the length of the second side is greater than the lengths of the first side and the third side; A main radiation stub, disposed on the second side, the main radiation stub including a first open end and a first ground point, the first ground point being grounded, the first ground point being closer to the third side than the first open end, the main radiation stub forming a first resonance, the first resonance having a first center frequency; A parasitic radiation stub, disposed on the second side, the parasitic radiation stub including a second open end and a second ground point, there being a gap between the second open end and the first open end, the parasitic radiation stub being coupled to the main radiation stub through the gap, the second ground point being grounded, the second ground point being closer to the first side than the second open end, the parasitic radiation stub forming a second resonance, the second resonance having a second center frequency, the second center frequency being greater than the first center frequency.

2. The electronic device according to claim 1, characterized in that, The second side has a preset area, the preset area being the area in contact with the second side when an external object supports the electronic device, at least part of the parasitic radiation stub being disposed in the preset area, the gap being offset from the preset area.

3. The electronic device according to claim 2, characterized in that When at least part of the parasitic radiation stub is blocked by the external object, the second resonance has a third center frequency, the third center frequency being less than the second center frequency and greater than the first center frequency, the dielectric constant of the external object being higher than the dielectric constant of the parasitic radiation stub.

4. The electronic device according to claim 1, wherein The length of the parasitic radiation stub is not greater than 3 / 4 of the length of the main radiation stub.

5. The electronic device according to claim 1, wherein The current direction of the main radiation stub is the same as the current direction of the parasitic radiation stub.

6. The electronic device according to claim 1, wherein The main radiation stub generates a first resonance in a first frequency band, and the parasitic radiation stub generates a second resonance in a second frequency band, wherein the first frequency band includes the B3 band, and the second frequency band includes the N78 band.

7. The electronic device according to claim 1, characterized in that, The electronic device further includes an adjustment circuit, the adjustment circuit being connected to the main radiation stub, and the main radiation stub changing the first center frequency of the first resonance through the adjustment circuit.

8. The electronic device according to claim 7, any one of the first center frequencies of the first resonance is less than the third center frequency or the second center frequency of the second resonance.

9. The electronic device according to claim 1, wherein When the user holds the electronic device by hand, the user's hand contacts at least part of the parasitic radiation stub, and the gap is offset from the user's hand.

10. The electronic device according to claim 9, wherein The electronic device further includes a battery, the battery being disposed adjacent to the second side, the feeding point of the main radiation stub being connected to a feeder, the feeding point being located on the side of the second side where the battery is orthogonally projected towards the third side.

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