Antenna device and electronic device

Abstract

The application provides an antenna device and an electronic device. A ground plane of an antenna unit includes a first edge and a second edge with different extension directions. A first grounding point is arranged on the first edge, and a second grounding point is arranged on the second edge. The antenna unit is arranged opposite the first edge and is electrically connected to the first grounding point. A first feed source is electrically connected to the antenna unit and is configured to provide a first excitation signal to enable the antenna unit to transmit a first wavelength signal. A first conductor structure is arranged opposite the second edge and is electrically connected to the second grounding point to reduce the directivity of the antenna unit in transmitting the first wavelength signal. The antenna device has lower directivity, is less likely to trigger a power back-off event, and has better radiation performance.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna device and electronic device. Background Technology

[0002] With the development of communication technology, electronic devices such as smartphones are able to perform more and more functions, and their communication modes are becoming more diversified. For example, electronic devices can perform functions such as cellular communication and Wi-Fi communication.

[0003] However, Wi-Fi antennas in related technologies exhibit significant directivity, which can easily trigger power back-off events during operation, thus reducing their radiation performance. Therefore, there is an urgent need to propose a solution to reduce the directivity of Wi-Fi antennas. Summary of the Invention

[0004] This application provides an antenna device and electronic device that can reduce the directivity of the antenna device.

[0005] In a first aspect, this application provides an antenna device, comprising:

[0006] The grounding plane includes a first side and a second side with different extending directions. A first grounding point is provided on the first side, and a second grounding point is provided on the second side.

[0007] An antenna element is disposed opposite to the first side, and the antenna element is electrically connected to the first grounding point;

[0008] A first feed source, electrically connected to the antenna element, is used to provide a first excitation signal to enable the antenna element to transmit a first wavelength signal; and

[0009] A first conductor structure is disposed opposite to the second side, and the first conductor structure is electrically connected to the second grounding point to reduce the directivity of the antenna unit in transmitting the first wavelength signal.

[0010] Secondly, this application provides an electronic device including the antenna device described above.

[0011] The antenna device and electronic device of this application have an antenna element and a first conductor structure respectively disposed relative to a first side and a second side of a ground plane. When a first feed source provides a first excitation signal to the antenna element so that the antenna element can transmit a first wavelength signal, the antenna element can form a radiation pattern on one side of the first side. The first conductor structure can change the current distribution of the first excitation signal on the ground plane. The first conductor structure can cause part of the excitation signal that was originally concentrated on one side of the first side to flow to the second side. The first conductor structure can form another radiation pattern on one side of the second side. This radiation pattern can complement the radiation pattern formed by the antenna element, making the radiation pattern formed by the antenna device more uniform. Thus, the first conductor structure can reduce the directivity of the antenna element in transmitting the first wavelength signal, making the directivity of the entire antenna device lower. The antenna device is less likely to trigger a power back-off event, and the radiation performance of the antenna device is better. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a first structure of the antenna device provided in an embodiment of this application.

[0014] Figure 2 for Figure 1 The diagram shown illustrates an antenna device without a first conductor structure.

[0015] Figure 3 for Figure 2 The radiation patterns of the antenna elements of the antenna device shown are displayed when they are positioned at different locations.

[0016] Figure 4 for Figure 1 The diagram shows another schematic of the antenna device without a first conductor structure.

[0017] Figure 5 for Figure 4 The radiation patterns of the antenna elements of the antenna device shown are displayed when they are positioned at different locations.

[0018] Figure 6 for Figure 1 The radiation patterns of the antenna device shown are displayed when the antenna elements are positioned at different locations.

[0019] Figure 7 for Figure 1 The radiation patterns of the antenna device shown are displayed when the first conductor structure is positioned in different locations.

[0020] Figure 8 This is a schematic diagram of a second structure of the antenna device provided in an embodiment of this application.

[0021] Figure 9 This is a schematic diagram of a third structure of the antenna device provided in the embodiments of this application.

[0022] Figure 10 for Figure 1 The radiation patterns of the first conductor structure of the antenna device shown have different lengths.

[0023] Figure 11 This is a schematic diagram of a fourth structure of the antenna device provided in the embodiments of this application.

[0024] Figure 12 This is a fifth structural schematic diagram of the antenna device provided in the embodiments of this application.

[0025] Figure 13 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0026] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 13 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] This application provides an antenna device 100 that can realize wireless communication functions. For example, the antenna device 100 can transmit Wi-Fi signals, Global Positioning System (GPS) signals, 3rd Generation (3G), 4th Generation (4G), 5th Generation (5G), Near Field Communication (NFC) signals, Bluetooth (BT) signals, Ultra Wideband (UWB) signals, etc.

[0028] Please refer to Figure 1 , Figure 1This is a schematic diagram of a first structure of the antenna device 100 provided in an embodiment of this application. The antenna device 100 includes a ground plane 110, an antenna element 120, a first feed 130, and a first conductor structure 140.

[0029] The ground plane 110 can form a common ground. The ground plane 110 can be formed by conductors, printed circuits, or metal printed layers in the antenna device 100. For example, the ground plane 110 can be formed on the motherboard or small board of the antenna device 100 or electronic device, the ground plane 110 can also be formed on the frame of the antenna device 100 or electronic device, or the ground plane 110 can also be formed on the housing of the antenna device 100 or electronic device.

[0030] The grounding plane 110 may include a first side 101 and a second side 102 extending in different directions. The first side 101 may extend towards a first direction H1, and the second side 102 may extend towards a second direction H2. The first direction H1 may be different from the second direction H2, so that the first side 101 or its extension may intersect with the second side 102 or its extension. The first side 101 may be directly or indirectly connected to the second side 102. The second side 102 may include a first end 1021 and a second end 1022 disposed opposite to each other. The first end 1021 may extend towards the direction of the first side 101 and be close to the side where the first side 101 is located, and the second end 1022 may extend away from the direction of the first side 101. A first grounding point 111 may be provided on the first side 101, and a second grounding point 112 may be provided on the second side 102.

[0031] Antenna element 120 may be disposed relative to the first side 101, such that the projection of antenna element 120 on ground plane 110 may be located on the first side 101. Antenna element 120 may be provided with a first free end 121, a first feed end 122 and a first ground end 123 spaced apart from each other. The first feed end 122 may be located between the first free end 121 and the first ground end 123. The first ground end 123 may be electrically connected to a first ground point 111 on the first side 101 of ground plane 110, so that antenna element 120 may be grounded through the first ground end 123 and the first ground point 111.

[0032] The first feed source 130 can be directly or indirectly electrically connected to the antenna element 120. For example, the first feed source 130 can be directly or indirectly electrically connected to the first feed terminal 122 of the antenna element 120. The first feed source 130 can provide a first excitation signal to the antenna element 120, which can excite the antenna element 120 to form a first resonance and transmit a first wireless signal of a first wavelength.

[0033] It is understood that the first wireless signal of the first wavelength can be, but is not limited to, a Wi-Fi signal. For example, it can be a 2.4G Wi-Fi signal or a 5G Wi-Fi signal. Of course, the first wireless signal of the first wavelength can also be a signal of other frequency bands, and this application embodiment does not limit this.

[0034] It is understood that the antenna device 100 may also include a tuning circuit (not shown) and a filtering circuit (not shown). The tuning circuit and the filtering circuit can tune and filter the first wireless signal provided by the first feed 130 so that the antenna unit 120 can transmit the first wireless signal.

[0035] The first conductor structure 140 may be disposed relative to the second side 102, such that the projection of the first conductor structure 140 onto the ground plane 110 can be located on the second side 102. The first conductor structure 140 may include a second free end 141 and a second ground end 142 disposed at intervals. The second free end 141 may be disposed away from the second ground end 142 and the antenna element 120 in the second direction H2. The second ground end 142 may be electrically connected to a second grounding point 112 on the second side 102 of the ground plane 110. The antenna element 120 may be grounded through the second ground end 142 and the second grounding point 112 to reduce the directivity of the first wireless signal of the first wavelength transmitted by the antenna element 120.

[0036] The first excitation signal provided by the first feed 130 can flow into the ground plane 110 through the first ground terminal 123 of the antenna element 120 and the first ground point 111 of the ground plane 110. The first excitation signal can also be coupled to the first conductor structure 140 from the second ground point 112 and the second ground terminal 142. The first conductor structure 140 can reduce the directivity of the antenna element 120 in transmitting the first wavelength signal.

[0037] It's understandable that antenna directivity refers to an antenna's ability to radiate or receive signals in different directions in space. Antenna directivity is the opposite of antenna omnidirectionality. Omnidirectionality means that an antenna's ability to radiate or receive signals is relatively uniform across different directions in space; in this case, the antenna has no directivity. For example, when an antenna has strong directivity in a certain direction, its radiation or reception capability in that direction is stronger, and its omnidirectionality is weaker. When an antenna has strong directivity, it is more likely to trigger a power back-off event during antenna testing, thus affecting the antenna's radiation performance.

[0038] When the antenna element 120 and the first conductor structure 140 are electrically connected to the ground plane 110 to achieve grounding, the first conductor structure 140 can change the current distribution of the excitation signal provided by the first feed 130 on the ground plane 110. The first conductor structure 140 can form a notch structure (e.g., a first notch structure) to reduce the directivity of the antenna element 120 in transmitting the first wavelength signal. It is understood that the notch structure can destroy the original resonance of the antenna element 120 at a certain frequency point in the operating frequency band when the notch structure is not set, so that the antenna element 120 cannot work normally at that frequency point. The notch structure can change the phase of the antenna element 120 at a certain frequency point to reduce the directivity of the antenna element 120.

[0039] For example, please refer to 2 and Figure 3 , Figure 2 for Figure 1 The diagram shown illustrates an antenna device 100 without the first conductor structure 140. Figure 3 for Figure 2 The radiation patterns of the antenna element 120 of the antenna device 100 are shown in different positions. When the antenna device 100 does not include the first conductor structure 140 and the antenna element 120 is positioned relative to the first side 101 of the ground plane 110, the first grounding terminal 123 of the antenna element 120 is electrically connected to the first grounding point 111 of the ground plane 110 to achieve grounding. In this case, the absence of the first conductor structure 140 changes the distribution of the excitation current provided by the feed on the ground plane 110. Figure 3 As shown, Figure 3 The first figure shows the radiation pattern of the antenna element 120 when the first grounding point 111 is set at the center point A of the first side 101; Figure 3 The second figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is located 20 mm (A-20) below the center point of the first side 101; Figure 3 The third figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is located 40 mm (A-40) below the center point of the first side 101; Figure 3 The fourth figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is located 70 mm (A-70) below the center point of the first side 101; Figure 3 The fifth figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is set 20 mm (A+20) above the center point of the first side 101; Figure 3 The sixth figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is located 40 mm (A+40) above the center point of the first side 101. Figure 2 and Figure 3It can be seen that when the antenna device 100 does not have the first conductor structure 140 and the antenna element 120 returns to ground through the first grounding point 111 located on the first side 101, the directivity of the antenna element 120 when returning to ground through the first grounding point 111 located at the center point of the first side 101 is as low as about 2.674 dBi. There is still room for improvement in this directivity.

[0040] For another example, please refer to Figure 4 and Figure 5 , Figure 4 for Figure 1 Another schematic diagram of the antenna device 100 shown without the first conductor structure 140 is provided. Figure 5 for Figure 4 The radiation patterns of the antenna element 120 of the antenna device 100 shown are displayed at different positions. When the antenna device 100 does not include the first conductor structure 140 and the antenna element 120 is positioned relative to the second side 102 of the ground plane 110, the first grounding point 111 of the ground plane 110 is correspondingly positioned on the second side 102. The first grounding terminal 123 of the antenna element 120 is electrically connected to the first grounding point 111 to achieve grounding. The first free end 121 of the antenna element 120 extends in a direction away from the first side 101. In this case, the first conductor structure 140 does not change the distribution of the excitation current provided by the feed on the ground plane 110. Figure 5 As shown, Figure 5 The first figure shows the radiation pattern of the antenna element 120 when the first grounding point 111 is set at the endpoint B (first end 1021) of the second side 102 near the first side 101; Figure 5 The second figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is set 15 mm to the right (B+15) of the endpoint B of the first side 101 near the second side 102. Figure 5 The third figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is set 30 mm to the right (B+30) of the endpoint B of the second side 102, close to the first side 101. Figure 5 The fourth figure shows the radiation pattern of antenna element 120 when the first grounding point 111 is located 45 mm (B+45) to the right of endpoint B of the first side 101 on the second side 102. Figure 4 and Figure 5It can be seen that when the antenna device 100 does not have the first conductor structure 140 and the antenna element 120 returns to ground through the first grounding point 111 located on the second side 102, the directivity of the antenna element 120 when returning to ground through the first grounding point 111 located near the center point of the second side 102 and close to the first side 101 (to the left of the center point of the second side 102) is less than the directivity when returning to ground through the first grounding point 111 located far from the center point of the second side 102 and away from the first side 101 (to the right of the center point of the second side 102). The lowest directivity of the antenna element 120 is approximately 2.838 dBi. There is still room for improvement in this directivity.

[0041] For example, please refer to Figure 1 Please refer to Figure 6 and Figure 7 , Figure 6 for Figure 1 The radiation patterns of the antenna element 120 of the antenna device 100 shown are displayed when the antenna element 120 is positioned at different locations. Figure 7 for Figure 1 The radiation patterns of the antenna device 100 with the first conductor structure 140 positioned at different locations are shown. Figure 1 and Figure 6 As shown, when the antenna device 100 includes both the antenna element 120 and the first conductor structure 140, Figure 6 The first figure shows the radiation pattern of the antenna device 100 when the first conductor structure 140 is located at end B (first end 1021) of the second side 102 and the antenna element 120 returns to ground through the first grounding point 111 set at the center point A of the second side 102. Figure 6 The second figure shows the radiation pattern of the antenna device 100 when the first conductor structure 140 is located at end B of the second side 102 and the antenna element 120 returns to ground through the first grounding point 111 located 20 mm (A-20) below the center point A of the second side 102. Figure 6 The third figure shows the radiation pattern of the antenna device 100 when the first conductor structure 140 is located at end B of the second side 102 and the antenna element 120 returns to ground through the first grounding point 111 located 40 mm below the center point A of the second side 102 (A-40). Figure 1 He Ru Figure 7 As shown, Figure 7 The first figure in the figure is a radiation pattern of the antenna device 100 when the antenna element 120 returns to ground through the first grounding point 111 located 40 mm below the center point A of the second side 102 (A-40) and the first conductor structure 140 is located 15 mm to the right of the end B of the second side 102 near the first side 101. Figure 7The second figure shows the radiation pattern of the antenna device 100 when the antenna element 120 returns to ground through the first grounding point 111, which is located 40 mm below the center point A of the second side 102 (A-40), and the first conductor structure 140 is located 35 mm to the right of the end B of the second side 102 near the first side 101. Figure 6 and Figure 7 It can be seen that when the antenna device 100 includes both the antenna element 120 and the first conductor structure 140, the directivity of the antenna device 100 is at least about 2.157 dBi, which is much lower than... Figures 2 to 5 The directivity shown is lower when only antenna element 120 is set. The directivity of antenna device 100 in this embodiment is even lower after the first conductor structure 140 is set, and antenna device 100 is less likely to trigger power back-off events.

[0042] Based on the above description, in the antenna device 100 of this application embodiment, the antenna element 120 and the first conductor structure 140 are respectively arranged relative to the first side 101 and the second side 102 of the ground plane 110. The first conductor structure 140 can change the current distribution of the excitation signal provided by the first feed 130 on the ground plane 110. The first conductor structure 140 can make part of the current originally concentrated on the side where the first side 101 is located flow to the second side 102. The first conductor structure 140 can form a radiation pattern on the side of the second side 102. This radiation pattern is complementary to the radiation pattern formed by the antenna element 120, making the radiation pattern formed by the antenna device 100 more uniform. Thus, the first conductor structure 140 can reduce the directivity of the antenna element 120 in transmitting the first wavelength signal, making the directivity of the entire antenna device 100 lower. The antenna device 100 is less likely to trigger a power back-off event, and the radiation performance of the antenna device 100 is better.

[0043] Please refer to this again. Figure 6 and Figure 7 Please refer to Figure 8 , Figure 8 This is a schematic diagram of a second structure of the antenna device 100 provided in an embodiment of this application. When the antenna element 120 and the first conductor structure 140 return to ground through the first grounding point 111 and the second grounding point 112, respectively, the distance λ between the first grounding point 111 and the second grounding point 112 can affect the directivity of the antenna device 100. It is understood that when the distance λ between the first grounding point 111 and the second grounding point 112 is approximately the first wavelength, the first conductor structure 140 can significantly reduce the directivity of the antenna element 120 in transmitting the first wavelength signal. For example, in Figures 1 to 8In the antenna device 100 shown, when the first wavelength signal transmitted by the antenna element 120 is a 2.4G Wi-Fi signal and the length of the first side 101 is about 140 mm and the length of the second side 102 is about 70 mm, when the first grounding point 111 is located 40 mm below the center point A of the first side 101 (A-40) and the second grounding point 112 is located near the endpoint B of the second side 102 close to the first side 101 (for example, the second grounding point 112 is 15 mm to the right of the endpoint B), the distance λ between the first grounding point 111 and the second grounding point 112 along the edge of the grounding plane 110 is greater than the distance of the first wavelength. The phase formed by the first excitation current on the first conductor structure 140 is in the same direction as the phase formed on the antenna element 120. The radiation pattern formed by the first conductor structure 140 and the radiation pattern formed by the antenna element 120 can be more complementary. The first conductor structure 140 can more easily reduce the directivity of the antenna device 100.

[0044] It is understood that in the above embodiments of this application, the length of the first side 101 can be greater than the length of the second side 102, so that the first side 101 is the long side of the ground plane 110 and the second side 102 is the short side of the ground plane 110. When the user is in a Wi-Fi scenario and holds the antenna device 100 or electronic device horizontally, the user is less likely to block the antenna element 120, and the antenna element 120 can have better radiation performance.

[0045] Of course, in actual use, the length of the second side 102 can be set to be greater than the length of the first side 101. In this case, the first grounding point 111 and the second grounding point 112 can be set at appropriate positions on the first side 101 and the second side 102 by adjustment, so that when the distance between the first grounding point 111 and the second grounding point 112 is approximately the first wavelength, the antenna device 100 has low directivity. This application embodiment does not limit this.

[0046] It is understood that in this embodiment, the distance λ between the first grounding point 111 and the second grounding point 112 can be approximately equal to the first wavelength, and the two can fluctuate within a certain range so that the phase formed by the first excitation current on the first conductor structure 140 is in the same direction as the phase formed on the antenna element 120. Considering that the effective electrical length of the antenna element 120 and the first conductor structure 140 can be increased or decreased by setting inductors, capacitors, etc., this distance can fluctuate within a certain range of the first wavelength so that the phase formed by the first excitation signal on the first conductor structure 140 is in the same direction as the phase formed by the first excitation signal on the antenna element 120. This embodiment does not limit the specific value of the distance between the first grounding point 111 and the second grounding point 112.

[0047] Please refer to this again. Figure 7 And refer to Figure 9 , Figure 9 This is a schematic diagram of a third structure of the antenna device 100 provided in an embodiment of this application. When the first distance L1 between the second grounding point 112 and the first end 1021 of the second side 102 is less than the second distance L2 between the second grounding point 112 and the second end 1022 of the second side 102, the second grounding point 112 is located on the second side 102 near the first side 101 (near the antenna element 120). When the first conductor structure 140 returns to ground through the second grounding point 112 and the antenna element 120 returns to ground through the first grounding point 111 on the first side 101, the first excitation current is more easily coupled to the first conductor structure 140, the first conductor structure 140 is more likely to form a radiation pattern complementary to the antenna element 120, and the first conductor structure 140 is more likely to reduce the directivity of the antenna device 100.

[0048] Please refer to this again. Figures 1 to 9 The first conductor structure 140 can extend in a direction away from the antenna element 120. The second grounding terminal 142 of the first conductor structure 140 can be electrically connected to the second grounding point 112. The second free end 141 of the first conductor structure 140 can extend in the direction of the second end 1022 of the second side 102, away from the first side 101 and away from the antenna element 120. Thus, the first conductor structure 140 can form a structure with an opening facing away from the first side 101. At this time, on the one hand, the radiation pattern formed by the first conductor structure 140 can extend in a direction away from the first side 101, and the radiation pattern formed by the first conductor structure 140 can more easily complement the radiation pattern formed by the antenna element 120, thereby making the radiation capability of the antenna device 100 more uniform in different directions and the directivity of the antenna device 100 lower; on the other hand, the first conductor structure 140 extends in the direction of the second end 1022 of the second side 102, and the first conductor structure 140 will not additionally extend the length of the antenna device 100 on the second side 102, and the size of the antenna device 100 will not be too large.

[0049] It is understood that the first conductor structure 140 may extend parallel to the second side 102 in a direction away from the first side 101; the first conductor structure 140 may also not be parallel to the second side 102 but extend in a direction away from the first side 101. This application embodiment does not limit this. Of course, the first conductor structure 140 may also extend in the direction of the antenna element 120. In this case, the directivity of the antenna device 100 formed by the first conductor structure 140 and the antenna element 120 can be reduced by adjusting the distance between them. This application embodiment does not specifically limit the specific orientation of the first conductor structure 140.

[0050] Please refer to this again. Figures 1 to 9 The antenna element 120 can extend toward the first conductor structure 140. The first ground terminal 123 of the antenna element 120 can be electrically connected to the first ground point 111 of the ground plane 110. The first free end 121 of the antenna element 120 can extend away from the first ground terminal 123 and toward the direction where the first conductor structure 140 and the second side 102 are located, so that the first free end 121 can be located between the first ground terminal 123 and the first conductor structure 140. At this time, on the one hand, the distance between the antenna element 120 and the first conductor structure 140 is relatively close, and the first conductor structure 140 is more likely to couple with the first excitation current on the ground plane 110 to form a notch structure; on the other hand, the radiation pattern formed by the antenna element 120 and the radiation pattern formed by the first conductor structure 140 are more likely to complement each other, thereby making it easier to reduce the directivity of the antenna device 100.

[0051] It is understood that the antenna element 120 may extend parallel to the first side 101 and toward the direction of the second side 102, or it may not be parallel to the first side 101 but extend toward the direction of the second side 102. This application embodiment does not limit this. Of course, the antenna element 120 may also not extend toward the direction of the second side 102. For example, the antenna element 120 may extend away from the second side 102 and away from the first conductor structure 140. In this case, the directivity of the antenna device 100 formed by the first conductor structure 140 and the antenna element 120 can be reduced by adjusting the distance between the antenna element 120 and the first conductor structure 140. This application embodiment does not specifically limit the specific orientation of the antenna element 120.

[0052] The length of the first conductor structure 140 can affect the directivity of the first conductor structure 140 in transmitting the first wavelength signal to the antenna element 120. For example, please refer to... Figure 10 , Figure 10 for Figure 1 The radiation patterns of the first conductor structure 140 of the antenna device 100 shown have different lengths. Figure 10 The first image shows the radiation pattern of the antenna device 100 when the length D of the first conductor structure 140 is 17 mm; Figure 10 The second figure shows the radiation pattern of the antenna device 100 when the length of the first conductor structure 140 is 18 mm; Figure 10 The third figure in the middle is the radiation pattern of the antenna device 100 when the length of the first conductor structure 140 is 19 mm; Figure 10 The fourth figure shows the radiation pattern of the antenna device 100 when the length of the first conductor structure 140 is 20 mm. Figure 10It is known that when antenna element 120 transmits a first wireless signal of the first wavelength, the first conductor structure 140 can operate in the same frequency band as antenna element 120. Under the excitation of the first excitation signal, the first conductor structure 140 can form a quarter-wavelength resonant mode. The effective electrical length of the first conductor structure 140 is approximately one-quarter of the dielectric wavelength (wave velocity / frequency / square root of dielectric constant). In this application, when antenna element 120 transmits a 2.4G Wi-Fi signal, the effective electrical length of the first conductor structure 140 is approximately... Figure 10 The third figure shows a diameter of 19 mm. At this time, the directivity of the antenna device 100 can be 2.053 dBi. The first conductor structure 140 can significantly reduce the directivity of the antenna device 100.

[0053] It is understood that when the first conductor structure 140 is not electrically connected to circuit devices such as inductors and capacitors, the effective electrical length of the first conductor structure 140 can be equivalent to its physical length, and the effective electrical length of the first conductor structure 140 can be equal to the distance between its second ground terminal 142 and its second free terminal 141. When the first conductor structure 140 is electrically connected to circuit devices such as inductors and capacitors that can increase or decrease its effective electrical length, the effective electrical length of the first conductor structure 140 can be greater than or less than its physical length, so that the first conductor structure 140 can form a quarter-wavelength resonant mode. The embodiments of this application do not limit the specific physical length of the first conductor structure 140.

[0054] The effective electrical length of the first conductor structure 140 in this embodiment is approximately one-quarter of the dielectric wavelength. The first conductor structure 140 can excite a resonant mode of one-quarter wavelength and can better reduce the directivity of the antenna element 120.

[0055] In this configuration, when transmitting a first wireless signal of the first wavelength, antenna element 120 can form a quarter-wavelength resonant mode, and the effective electrical length of antenna element 120 can also be approximately one-quarter of the dielectric wavelength. In this case, antenna element 120 is more easily excited to resonate and transmit the first wireless signal of the first wavelength, resulting in better radiation performance.

[0056] Please refer to the following: Figure 11 , Figure 11 This is a fourth structural schematic diagram of the antenna device 100 provided in the embodiments of this application. The antenna device 100 may further include a second feed source 150.

[0057] The second feed source 150 can be directly or indirectly electrically connected to the first conductor structure 140. For example, the first conductor structure 140 may also be provided with a second feed terminal 143, and the second feed source 150 can be electrically connected to the second feed terminal 143. The second feed source 150 can provide a second excitation signal. When the second feed source 150 feeds the first excitation signal to the first conductor structure 140, the first conductor structure 140 can transmit a second wireless signal of a second wavelength.

[0058] It is understandable that the second wireless signal can be different from the first wireless signal. For example, the frequency of the second wireless signal can be different from the frequency of the first wireless signal, so that the second wavelength of the second wireless signal can be different from the first wavelength of the first wireless signal.

[0059] It is understandable that the second feed 150 can operate simultaneously with the first feed 130, enabling the antenna element 120 to transmit the first wireless signal and the first conductor structure 140 to transmit the second wireless signal. The first conductor structure 140 can also form a notch filter structure for the antenna element 120, thus achieving multiplexing. Alternatively, the second feed 150 may not operate simultaneously with the first feed 130. In this case, the first conductor structure 140 can serve as a notch filter structure for the antenna element 120, or it can transmit the second wireless signal independently.

[0060] In the antenna device 100 of this application embodiment, the first conductor structure 140 is electrically connected to the second feed 150. The first conductor structure 140 can transmit wireless signals independently or serve as a notch filter structure for the antenna element 120. The first conductor structure 140 can be reused, and the antenna device 100 can be miniaturized.

[0061] Please refer to the following: Figure 12 , Figure 12 This is a fifth structural schematic diagram of the antenna device 100 provided in an embodiment of this application. The antenna device 100 may further include a second conductor structure 160.

[0062] The second conductor structure 160 can be disposed on a side of the ground plane 110 that extends in a direction different from that of the first side 101. For example, Figure 12As shown, the grounding plane 110 can be a rectangular structure. The grounding plane 110 may also include a third side 103 and a fourth side 104. The third side 103 can be positioned opposite the second side 102, and the fourth side 104 can be positioned opposite the first side 101. The first side 101, the second side 102, the fourth side 104, and the third side 103 can sequentially enclose and form a rectangular structure. The second conductor structure 160 can be positioned relative to the third side 103. The projection of the second conductor structure 160 onto the grounding plane 110 can be located on the third side 103. Therefore, the antenna element 120, the first conductor structure 140, and the second conductor structure 160 can be respectively positioned on different sides of the grounding plane 110. Of course, the second conductor structure 160 can also be positioned on other sides, such as the second side 102. In this case, both the first conductor structure 140 and the second conductor structure 160 can be located on the second side 102. This application embodiment does not limit the specific position of the second conductor structure 160.

[0063] It is understood that a third grounding terminal 161 may be provided on the second conductor structure 160, and a third grounding point 113 may be provided on the third side 103 of the grounding plane 110. The second conductor structure 160, for example, the third grounding terminal 161, may be electrically connected to the third grounding point 113 to reduce the directivity of the first wireless signal of the first wavelength transmitted by the antenna element 120. When the first excitation signal provided by the first feed 130 flows into the grounding plane 110 through the first grounding terminal 123 of the antenna element 120 and the first grounding point 111 of the grounding plane 110, the first excitation signal may also be coupled to the second conductor structure 160 from the third grounding point 113 and the third grounding terminal 161. The second conductor structure 160 may form a notch structure (e.g., a second notch structure) to reduce the directivity of the first wireless signal of the first wavelength transmitted by the antenna element 120.

[0064] It is understood that, based on the aforementioned description of the first grounding point 111 and the second grounding point 112, the distance between the third grounding point 113 and the first grounding point 111 can also be approximately the first wavelength, so that the second conductor structure 160 can further reduce the directivity of the antenna device 100.

[0065] It is understood that, like the first conductor structure 140, the second conductor structure 160 can also extend in a direction away from the antenna element 120, so that the radiation pattern formed by the second conductor structure 160 can be further complementary to the first conductor structure 140, thereby making the radiation pattern of the antenna device 100 more uniform.

[0066] It is understandable that when the antenna element 120 transmits the first wireless signal of the first wavelength, the second conductor structure 160 can also form a quarter-wavelength resonant mode, and the effective electrical length of the second conductor structure 160 can also be a quarter of the dielectric wavelength.

[0067] It is understood that, similar to the first conductor structure 140, the antenna device 100 may also include a third feed (not shown), which may be electrically connected to the second conductor structure 160 so that the second conductor structure 160 can transmit a third wireless signal of a third wavelength. The second conductor structure 160 can serve as a notch filter structure for the antenna element 120 or can transmit wireless signals independently; the second conductor structure 160 can be multiplexed.

[0068] The antenna device 100 of this application embodiment is provided with two notch structures, a first conductor structure 140 and a second conductor structure 160. The first conductor structure 140, the second conductor structure 160 and the antenna element 120 are respectively disposed on different sides of the ground plane 110. Thus, the first conductor structure 140 and the second conductor structure 160 can better complement the radiation pattern of the antenna element 120, making the radiation pattern formed by the antenna device 100 more uniform and the directivity of the antenna device 100 lower.

[0069] It should be noted that the first conductor structure 140 and the second conductor structure 160 of this application can be as follows: Figures 1 to 12 The diagram shows a long, strip-shaped radiating branch structure, but other structures are also possible. For example, the first conductor structure 140 and the second conductor structure 160 can be, but are not limited to, L-shaped, U-shaped, or F-shaped structures; the embodiments of this application do not specifically limit their shapes. As another example, slots 311 can be provided on the first conductor structure 140 and the second conductor structure 160. These slots 311 can be, but are not limited to, long, arc-shaped, ring-shaped, or butterfly-shaped; the embodiments of this application do not limit the specific structure of the slots 311. Furthermore, the first conductor structure 140 and the second conductor structure 160 can be electrically connected to an adjustment circuit. This adjustment circuit can include one or more components such as capacitors, resistors, and inductors; the embodiments of this application do not limit the structure of the adjustment circuit. The embodiments of this application do not limit the specific form of the first conductor structure 140 and the second conductor structure 160. Any notch filter structure that can form the antenna element 120 to transmit the first wireless signal of the first wavelength can be the first conductor structure 140 and the second conductor structure 160 of the embodiments of this application.

[0070] It should be noted that, in addition to the antenna element 120 described above, the antenna device 100 of this application may also include other antenna modules, such as one or more antenna modules disposed on the fourth side 104 relative to the ground plane 110. The antenna module may have the same structure as the antenna element 120 or may be different. This application does not limit the specific implementation of this feature.

[0071] Based on the structure of the antenna device 100 described above, this application also provides an electronic device 10. The electronic device 10 can be a smartphone, tablet computer, or other similar device, or it can be a gaming device, augmented reality (AR) device, automotive device, data storage device, audio playback device, video playback device, laptop computer, desktop computing device, etc. Please refer to... Figure 13 , Figure 13 This is a schematic diagram of the structure of an electronic device 10 provided in an embodiment of this application. The electronic device 10 may include the antenna device 100, display screen 200, mid-frame 300, circuit board 400, battery 500 and back cover 600 of the foregoing embodiments.

[0072] The display screen 200 can be mounted on the mid-frame 300 and connected to the rear housing 600 via the mid-frame 300 to form the display surface of the electronic device 10. The display screen 200 can be used to display images, text, and other information. The display screen 200 can be a display device of the type such as an Organic Light-Emitting Diode (OLED) display or an Organic Light-Emitting Diode (OLED) monitor.

[0073] The middle frame 300 may include a frame 310 and a middle plate 320. The middle plate 320 can provide support for electronic devices or electronic components in the electronic device 10. The frame 310 is connected to the edge of the support plate and protrudes from the support plate. The frame 310 and the middle plate 320 form an accommodating space in which electronic components or electronic devices in the electronic device 10 can be installed and fixed.

[0074] Circuit board 400 can be mounted on mid-frame 300. Circuit board 400 can be the motherboard of electronic device 10. Circuit board 400 can integrate one, two, or more electronic devices such as microphone, speaker, receiver, headphone jack, universal serial bus interface (USB interface), camera assembly, distance sensor, environmental sensor, gyroscope, and processor. Display screen 200 can be electrically connected to circuit board 400 to control its display via the processor on circuit board 400. One or more of the first feed source 130, second feed source 150, and third feed source can be disposed on circuit board 400 to control the aforementioned devices via the processor.

[0075] Battery 500 can be mounted on mid-frame 300. Simultaneously, battery 500 is electrically connected to circuit board 400 to power electronic device 10. Power management circuitry can be installed on circuit board 400. This power management circuitry distributes the voltage provided by battery 500 to the various electronic components within electronic device 10.

[0076] The rear cover 600 can be connected to the middle frame 300. The rear cover 600, together with the middle frame 300 and the display screen 200, seals the electronic devices and functional components of the electronic device 10 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10.

[0077] Please refer to this again. Figure 13 When the frame 310 of the middle frame 300 is made of a conductive material, one or more slots 311 may be provided on the frame 310 of the middle frame 300 to form one or more metal branches 312. The antenna element 120 of the antenna device 100 may include one or more metal branches 312. Thus, the frame 310 of this embodiment can be reused as the antenna element 120, and the antenna device 100 and the electronic device 10 can be miniaturized.

[0078] It is understood that the first conductor structure 140 may also include one or more metal branches 312 on the frame 310, and the second conductor structure 160 may also include one or more metal branches 312 on the frame 310. This application does not limit this aspect.

[0079] It is understood that the antenna element 120, the first conductor structure 140, and the second conductor structure 160 can also be formed on other conductor structures of the electronic device 10. For example, when the rear cover 600 is made of a conductor material, one or more of the antenna element 120, the first conductor structure 140, and the second conductor structure 160 may also include one or more metal branches 312 on the rear cover 600. This application does not specifically limit the formation method of the antenna element 120, the first conductor structure 140, and the second conductor structure 160.

[0080] Please refer to this again. Figure 13 When the middle plate 320 of the middle frame 300 is made of a conductor material, the middle plate 320 can form the ground plane 110 of the antenna device 100. At this time, the middle plate 320 can both support the components of the electronic device 10 and serve as a grounding device. The middle plate 320 can be reused, and the antenna device 100 and the electronic device 10 can be miniaturized.

[0081] It is understandable that when the antenna unit 120, the first conductor structure 140, and the second conductor structure 160 are formed on the middle frame 300 and the middle plate 320 forms the ground plane 110, the distance between the antenna unit 120, the first conductor structure 140, the second conductor structure 160 and the ground plane 110 is closer, and the grounding wiring of the antenna unit 120, the first conductor structure 140, and the second conductor structure 160 is easier to set, which can simplify the structure of the antenna device 100.

[0082] It should be noted that the ground plane 110 of the antenna device 100 can also be disposed on other structures. For example, the ground plane 110 can be formed on components such as the circuit board 400 and the rear cover 600 of the electronic device 10, but is not limited to them. This application embodiment does not limit this.

[0083] In the description of this application, it should be understood that terms such as “first” and “second” are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0084] The antenna device and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An antenna device, characterized in that, include: The grounding plane includes a first side and a second side with different extending directions. A first grounding point is provided on the first side, and a second grounding point is provided on the second side. An antenna element is disposed relative to the first side. The antenna element includes a first free end, a first feed end, and a first ground end arranged sequentially and spaced apart from each other. The first ground end is electrically connected to the first grounding point. A first feed source is electrically connected to the antenna element, and the first feed source is used to provide a first excitation signal so that the antenna element transmits a first wavelength signal; and A first conductor structure is disposed opposite to the second side. The first conductor structure includes a second grounding terminal, which is electrically connected to the second grounding point. Wherein, the distance between the first grounding point and the second grounding point is the first wavelength, so that when the first feed source provides the first excitation signal, the excitation current on the first conductor structure and the excitation current on the antenna unit are in the same phase, thereby reducing the directivity of the antenna unit in transmitting the first wavelength signal.

2. The antenna device according to claim 1, characterized in that, The second grounding terminal is located at one end of the first conductor structure, and the other end of the first conductor structure extends in a direction away from the antenna element.

3. The antenna device according to claim 1, characterized in that, When the antenna unit transmits the first wavelength signal, the first conductor structure is used to form a quarter-wavelength resonant mode.

4. The antenna device according to claim 1, characterized in that, The first wavelength signal includes a wireless fidelity signal.

5. The antenna device according to any one of claims 1 to 4, characterized in that, Also includes: A second feed source is electrically connected to the first conductor structure, and the second feed source is used to provide a second excitation signal so that the first conductor structure transmits a second wavelength signal.

6. The antenna device according to any one of claims 1 to 4, characterized in that, The first grounding terminal is disposed at one end of the antenna unit, and the other end of the antenna unit extends toward the first conductor structure.

7. The antenna device according to any one of claims 1 to 4, characterized in that, The grounding plane further includes a third side, which is disposed opposite to the second side, and a third grounding point is provided on the third side; the antenna device further includes: A second conductor structure is disposed opposite to the third side, and the second conductor structure is electrically connected to the third grounding point to reduce the directivity of the antenna unit in transmitting the first wavelength signal.

8. An electronic device, characterized in that, Includes the antenna device as described in any one of claims 1 to 7.

9. The electronic device according to claim 8, characterized in that, Also includes: The middle frame includes a middle plate and a frame, the middle plate forming the ground plane, the frame having slots to form metal branches, and the antenna element including the metal branches.

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