An antenna assembly, antenna and electronic device

Abstract

This application provides an antenna assembly, an antenna, and an electronic device. An antenna assembly includes a radiating element and an isolation element connected to the radiating element. The isolation element is constructed as an electromagnetic metamaterial structure to absorb electromagnetic interference signals radiated by external devices in the target frequency band. The advantage of this application is that by adding an isolation element to the antenna, which is an electromagnetic metamaterial structure, it can absorb electromagnetic interference signals radiated by external devices in the target frequency band, enhancing the electronic device's resistance to electromagnetic interference from external devices; thereby ensuring the wireless internet speed of the electronic device. When the antenna of this application is placed at the hinge position, it will not be affected by electromagnetic radiation interference from external devices at the I / O interface, improving customer satisfaction.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and more particularly to an antenna assembly, antenna, and electronic device. Background Technology

[0002] The wireless internet speed of a laptop is highly correlated with the strength of electromagnetic interference (EMI) signals received by the WiFi antenna. Stronger EMI signals result in a lower signal-to-noise ratio (SNR) and slower speeds; conversely, weaker EMI signals lead to a higher SNR and faster speeds. Therefore, when designing laptops, engineers incorporate shielding features to address EMI sources within the system. These include adding shielding to DDR (Double Data Rate Synchronous Dynamic Random Access Memory), wrapping SSDs in aluminum foil, and attaching absorbing materials to the GPU (Graphics Processing Unit) to reduce EMI from these sources and ensure normal WiFi speeds. However, these electromagnetic interference (EMI) suppression solutions can only address EMI from internal noise sources within the laptop, not from external electronic devices connected to the laptop, such as external hard drives, USB flash drives, and docking stations. When these external devices are plugged into the laptop's interface via cables, both the devices themselves and the cables generate EMI. This radiated EMI signal is received by the laptop's WiFi antenna, causing a decrease in network speed. Furthermore, the quality of external electronic devices and cables varies greatly. Many external electronic devices on the market are not designed to shield EMI signals, resulting in very strong radiated EMI signals. Apple's Macbook has even had customer complaints about WiFi disconnection caused by connecting external USB devices.

[0003] Current solutions involve designing the laptop's WiFi antenna away from the I / O ports, extending the distance between the WiFi antenna and external electronic devices. These locations, such as above the LCD screen or in front of the base, minimize the risk of receiving electromagnetic interference signals from external devices. Alternatively, external devices and their cables can be completely wrapped in aluminum foil to shield against electromagnetic interference. However, this approach lacks universal applicability. In some cases, due to laptop industrial design requirements (narrow bezels) and structural limitations (metal casing), there is no space above the LCD screen or in front of the base to place the WiFi antenna. The antenna must then be placed in the hinge, close to the I / O ports, making it highly susceptible to electromagnetic interference signals from external devices and their cables, impacting customer experience and brand reputation. Utility Model Content

[0004] This application provides an antenna assembly, antenna, and electronic device to at least solve one of the technical problems existing in the prior art.

[0005] A first aspect of this application provides an antenna assembly, the antenna assembly comprising:

[0006] Radiation unit;

[0007] An isolation unit, connected to the radiation unit, is constructed as an electromagnetic metamaterial structure to absorb electromagnetic interference signals radiated by external devices in the target frequency band.

[0008] In one possible implementation, the isolation unit includes:

[0009] Isolation stubs, which are used to absorb electromagnetic interference signals in the target frequency band radiated by the external equipment;

[0010] The first grounding branch, the first end of the first grounding branch is connected to the isolation branch.

[0011] In one embodiment, the isolation branch has a spiral bending structure, a T-shaped structure, or a ring structure.

[0012] In one possible implementation, the radiating element includes:

[0013] First radiating branch;

[0014] The second radial branch is connected to the first radial branch;

[0015] A feeder stub, the first end of which is connected to the connection point of the first radiating stub and the second radiating stub;

[0016] The second grounding branch has its first end connected to the second end of the feeder branch, and its second end connected to the second end of the first grounding branch.

[0017] In one possible implementation, the antenna assembly further includes:

[0018] Feed point, wherein the feed point is located on the feed line branch;

[0019] The grounding point is located on the first grounding branch and / or the second grounding branch.

[0020] A second aspect of this application provides an antenna for use in an electronic device having an I / O interface, a substrate, and an antenna assembly as described in any of the above-described embodiments, the antenna assembly being disposed on the substrate.

[0021] In one embodiment, two antenna assemblies are provided, both of which are disposed on the same substrate to form a main antenna and a secondary antenna, respectively. The radiating elements of the main antenna and the secondary antenna are arranged close to each other, and the isolation elements are arranged far apart from each other.

[0022] In one embodiment, two antenna assemblies are provided, each of which is mounted on a substrate to form a main antenna and a secondary antenna, respectively. The isolation units of the main antenna and the secondary antenna are both located close to the I / O interface, and the radiating units are both located away from the I / O interface.

[0023] In one embodiment, a grounding electrode is also included, which is connected to a first grounding branch and a second grounding branch of the antenna assembly.

[0024] A third aspect of this application provides an electronic device including an antenna assembly or antenna as described in any of the above-described possible embodiments.

[0025] Compared with existing technologies, the advantages of this application are: 1) By adding an isolation unit to the antenna, which is an electromagnetic metamaterial structure, this application can absorb electromagnetic interference signals radiated by external devices in the target frequency band, enhancing the electronic device's resistance to electromagnetic interference from external devices, thereby ensuring the wireless internet access speed of the electronic device. 2) When the antenna of this application is placed at the hinge position, it will not be affected by electromagnetic radiation interference from external devices at the I / O interface, improving customer satisfaction. 3) This application optimizes the antenna body without adding additional auxiliary material costs.

[0026] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0027] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0028] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0029] Figure 1 A schematic diagram of the structure of a first type of antenna according to an embodiment of this application is shown;

[0030] Figure 2 A schematic diagram of the structure of a second type of antenna according to an embodiment of this application is shown;

[0031] Figure 3A cross-sectional schematic diagram of a first antenna assembly according to an embodiment of this application is shown;

[0032] Figure 4 A cross-sectional schematic diagram of a second type of antenna assembly according to an embodiment of this application is shown;

[0033] Figure 5 Another cross-sectional schematic diagram of a first antenna assembly according to an embodiment of this application is shown;

[0034] Figure 6 Another cross-sectional schematic diagram of a second type of antenna assembly according to an embodiment of this application is shown;

[0035] Figure 7 A schematic diagram showing the dimensions of a first type of antenna and a second type of antenna according to embodiments of this application is shown;

[0036] Figure 8 This diagram illustrates the structure of a first type of antenna and a second type of antenna sharing a single substrate, according to embodiments of this application.

[0037] Figure 9 A flowchart illustrating the fabrication process of an antenna according to an embodiment of this application is shown.

[0038] Explanation of the labels in the diagram: 1-Antenna assembly, 2-Baseboard, 3-Main antenna, 4-Sub-antenna;

[0039] 11-Radiating unit, 111-First radiating branch, 112-Second radiating branch, 113-Feeder branch, 114-Second grounding branch, 1121-Radiating main body section, 1122-Extension section, 1131-First feeder connection section, 1132-Second feeder connection section, 1133-Third feeder connection section;

[0040] 12-Isolation unit, 121-Isolation branch, 122-First grounding branch, 1211-First isolation segment, 1212-Second isolation segment, 1213-Third isolation segment, 1214-Fourth isolation segment, 1215-Fifth isolation segment, 1216-Sixth isolation segment;

[0041] 13 - Power supply point, 14 - Grounding point. Detailed Implementation

[0042] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Due to the current structural limitations of laptops, the antenna can only be placed at the hinge position, which is close to the input / output port (I / O interface). Therefore, it is easy to receive electromagnetic interference signals from external devices and their cables at the I / O interface.

[0044] The amount of electromagnetic signal energy received by an antenna can be calculated using the Friis Transmission Equation, which describes how signal power is transmitted from one antenna to another in free space. It takes into account antenna gain, wavelength, and the distance between the two antennas. The Friis Transmission Equation is as follows:

[0045] Among them, P R It is the received power, P T It is the transmission power, G T It is the gain of the transmitting antenna, G R λ is the gain of the receiving antenna, λ is the wavelength of the signal, and d is the distance between the two antennas. Treating the external device as an electromagnetic interference (EMI) signal transmitting antenna, the closer the laptop's Wi-Fi antenna is to the external device, the greater the energy of the received EMI signal and the stronger the impact. Therefore, it is evident that placing the Wi-Fi antenna at the hinge position makes it more susceptible to receiving EMI signals from external devices.

[0046] Based on this, this application makes a creative improvement to the Wi-Fi antenna, enabling it to be placed at the hinge of a laptop while blocking electromagnetic interference signals from external devices at the I / O interface.

[0047] Therefore, as Figure 1-2 This application provides an antenna for use in an electronic device. The electronic device has an I / O interface. The antenna includes an antenna assembly 1 and a substrate 2. The antenna assembly 1 is disposed on the substrate 2. The antenna assembly 1 includes a radiating element 11 and an isolation element 12 connected to the radiating element 11. The isolation element 12 is constructed as an electromagnetic metamaterial structure to absorb electromagnetic interference signals of the target frequency band radiated by external devices.

[0048] The antennas in this application include, but are not limited to, Wi-Fi antennas. These Wi-Fi antennas are used in electronic devices and can be placed at the hinge of the electronic device to absorb electromagnetic interference signals of the target frequency band radiated by external devices, thereby enhancing the electronic device's ability to resist electromagnetic interference from external devices and ensuring the wireless internet access speed of the electronic device.

[0049] For example, the isolation unit 12 and the radiating unit 11 of the antenna assembly 1 are made of the same material, such as copper or alloys.

[0050] Taking a laptop computer as an example and a Wi-Fi antenna as an example, this application proposes a Wi-Fi antenna solution to improve the laptop's resistance to electromagnetic interference from external devices. According to actual measurements, the electromagnetic interference signals radiated by external devices are mainly in the 2.4 GHz band, which overlaps with the 2.4 GHz band of the Wi-Fi antenna's operating frequency (2.4 GHz / 5 GHz / 6 GHz). Therefore, when Wi-Fi operates in the 2.4 GHz band, the electromagnetic interference signals radiated by external devices in the 2.4 GHz band will cause a deterioration in the quality of the 2.4 GHz Wi-Fi signal received by the Wi-Fi antenna, resulting in a decrease in network speed. This application innovatively proposes to weaken the electromagnetic interference signals received from the left / right sides by adding an anti-interference signal isolation stub to one side of the antenna's radiating element and by optimizing the layout of the radiating stubs for the three frequency bands of the Wi-Fi antenna, thereby enhancing the laptop's resistance to electromagnetic interference from external devices.

[0051] This application adds an isolation unit to the antenna. The isolation unit is an electromagnetic metamaterial structure, and its resonant frequency is designed in the 2.4 GHz band to absorb 2.4 GHz electromagnetic interference signals radiated from external devices (including their cables) at the I / O interfaces on the left and right sides of the laptop. Metamaterials are a novel type of structural electromagnetic wave absorbing material that has attracted widespread attention in recent years. Metamaterials possess unique electromagnetic parameters, such as negative refractive index and high impedance surfaces. These properties help control the propagation and reflection of electromagnetic waves, thereby achieving a wave absorption effect. The metamaterial structure generates strong electromagnetic resonance at a specific frequency, resulting in the efficient absorption and conversion of the incident electromagnetic wave's energy into heat energy. By designing the electromagnetic parameters of the metamaterial isolation unit, good impedance matching with free space can be achieved, allowing electromagnetic waves to effectively enter the material's interior, reducing reflection and increasing absorption. Furthermore, through ingenious isolation unit structural design, such as using a rotationally symmetric structure, this application enables the metamaterial isolation unit to maintain stable absorption performance for electromagnetic waves with different incident angles and polarization states.

[0052] Electromagnetic metamaterials are a class of artificial composite structures possessing extraordinary physical properties not found in natural materials; in other words, electromagnetic metamaterials are a type of structure. Their properties primarily arise from the microstructure design of the material, rather than the intrinsic properties of its constituent materials. Through specific structural designs, electromagnetic metamaterials can exhibit properties such as negative permittivity, negative permeability, and negative refractive index.

[0053] In some embodiments, such as Figure 3-4 As shown, the isolation unit 12 includes: an isolation stub 121, which is used to absorb electromagnetic interference signals of the target frequency band radiated by external equipment; and a first grounding stub 122.

[0054] The first end of the first grounding branch 122 is connected to the isolation branch 121.

[0055] For example, the isolated branch 121 has a spiral bending structure, a T-shaped structure, or a ring structure. Figure 3 As shown, the isolated branch is formed by a counter-clockwise spiral bend, as... Figure 4 As shown, the isolated branch is formed by a clockwise spiral bend. Figure 5-6 As shown, taking the spiral bending structure of the isolation stub 121 as an example, the isolation stub 121 includes a first isolation segment 1211, a second isolation segment 1212, a third isolation segment 1213, a fourth isolation segment 1214, a fifth isolation segment 1215, and a sixth isolation segment 1216 connected sequentially along the spiral direction. The first end of the first isolation segment 1211 is connected to the first end of the second isolation segment 1212 and is perpendicular to it. The second end of the second isolation segment 1212 is connected to the first end of the third isolation segment 1213 and is perpendicular to it. The middle position of the third isolation segment 1213 is connected to the first end of the fourth isolation segment 1214 and is perpendicular to it. The second end of the fourth isolation segment 1214 is connected to the first end of the fifth isolation segment 1215 and is perpendicular to it. The second end of the fifth isolation segment 1215 is connected to the first end of the sixth isolation segment 1216 and is perpendicular to it. The second end of the sixth isolation segment 1216 is connected to the first end of the first grounding stub 122 and is perpendicular to it. In addition, the first isolation section 1211 and the third isolation section 1213 are arranged in parallel, the second isolation section 1212 and the fourth isolation section 1214 are arranged in parallel, and the fifth isolation section 1215 is arranged in parallel with the first grounding branch 122.

[0056] In some embodiments, such as Figure 3-4 As shown, the radiating element 11 includes: a first radiating branch 111;

[0057] The second radiating stub 112 is connected to the first radiating stub 111; the feeder stub 113 has its first end connected to the connection point of the first radiating stub 111 and the second radiating stub 112; the feeder stub 113 is used to efficiently transmit radio frequency signals (2.4G, 5G, 6G) to the first radiating stub and the second radiating stub.

[0058] The second grounding branch 114 has its first end connected to the second end of the feeder branch 113 and its second end connected to the second end of the first grounding branch 122.

[0059] For example, such as Figure 5-6As shown, the second radiating branch 112 is positioned away from the isolation unit. The second radiating branch 112 includes a radiating main section 1121 and an extension section 1122. The radiating main section 1121 and the extension section 1122 are positioned perpendicularly, and the extension section 1122 extends towards the second grounding branch 114. The radiating main sections 1121 of the first radiating branch 111 and the second radiating branch 112 are on the same straight line. The first radiating branch is a 5G / 6G radiating branch, and the second radiating branch 112 is a 2.4G radiating branch.

[0060] For example, such as Figure 5-6 As shown, the feeder stub 113 is a “~” shaped structure composed of a first feeder connecting segment 1131, a second feeder connecting segment 1132, and a third feeder connecting segment 1133 connected at their ends. The first end of the first feeder connecting segment 1131 is connected to the connection position of the first radiating stub 111 and the second radiating stub 112, and the second end of the first feeder connecting segment 1131 is inclined toward the second radiating stub 112. The second end of the first feeder connecting segment 1131 is connected to the first end of the second feeder connecting segment 1132. The second end of the second feeder connecting segment 1132 is connected to the first end of the third feeder connecting segment 1133. The second end of the third feeder connecting segment 1133 is connected to the first end of the second grounding stub 114. The second end of the second grounding stub 114 is connected to the second end of the first grounding stub 122. The second feeder connection section 1132 is arranged parallel to the first radiating branch 111, and the third feeder connection section 1133 is arranged perpendicular to the second feeder connection section 1132.

[0061] In some embodiments, such as Figure 1-2 As shown, antenna assembly 1 also includes:

[0062] Feed point 13 is located on feeder branch 113;

[0063] Grounding point 14 is located on the first grounding branch 122 and / or the second grounding branch 114.

[0064] For example, feed point 13 is connected to the radio frequency transmission line. The feed point is the physical connection point between the antenna and the radio frequency transmission line (such as a coaxial cable). It is responsible for transmitting the radio frequency signal energy generated by the wireless network card (such as a WiFi module) to the antenna, or transmitting the electromagnetic wave energy received from space back to the network card.

[0065] Grounding point 14 provides a reference potential for the antenna, forms a current loop and stabilizes the antenna's operating environment, reducing the impact of external interference on the signal.

[0066] In some embodiments, such as Figure 8As shown, there are two antenna assemblies 1, both of which are mounted on the same substrate 2 to form a main antenna 3 and a secondary antenna 4, respectively. The radiating elements 11 of the main antenna 3 and the secondary antenna 4 are arranged close to each other, and the isolation elements 12 are arranged far apart from each other.

[0067] Alternatively, there may be two antenna assemblies 1, each mounted on a substrate 2 to form a main antenna 3 and a secondary antenna 4, respectively. The isolation units 12 of the main antenna 3 and the secondary antenna 4 are both located close to the I / O interface, and the radiating units 11 are both located away from the I / O interface.

[0068] For example, such as Figure 8 As shown, when the main antenna 3 and the secondary antenna 4 share the same substrate 2, the second radiating stub 112 (2.4G radiating stub) is positioned close to each other and far from the isolation stub. The isolation units of the main antenna 3 and the secondary antenna 4 are located on the left and right sides, respectively. The isolation units on the left and right sides are metamaterial structures. The isolation units of this metamaterial structure adopt a spiral bending structure. By bending the isolation stub, the direction of the current is continuously changed. While reducing the size of the isolation stub, the current changing back and forth on the isolation stub cancels each other out, thereby reducing the impact on the radiation performance of the antenna itself.

[0069] For example, in this application, the isolation unit 12 of the main / sub antenna is placed close to the I / O interface, and the radiating unit 11 is placed away from the I / O interface. According to the Fries transmission equation, increasing the distance between the 2.4G radiating stub of the WiFi antenna and the external device can effectively reduce the energy of the 2.4G interference signal radiated by the external device received by the WiFi antenna. For an integrated antenna (the main / sub antenna shares a PCB board), the second radiating stub 112 (2.4G radiating stub) of the main / sub antenna can be designed in the middle of the PCB, which is the farthest from the I / O interface. For a separate antenna (the main / sub antenna uses a separate PCB board), the second radiating stub 112 (2.4G radiating stub) of each antenna can be designed on the side away from the I / O interface.

[0070] For example, the substrate of the antenna in this application is made of FR4 material (glass fiber reinforced epoxy resin board).

[0071] For example, as shown in Figure 7-8, the isolation units of the main antenna 3 and the secondary antenna 4 are symmetrically arranged and the isolation units of the two are the same size. Among them, the length L1 of the third isolation segment 1213 is 10.31 mm, the length L2 of the fourth isolation segment 1214 is 3.58 mm, the length L3 of the fifth isolation segment 1215 is 7.42 mm, and the length L4 of the sixth isolation segment is 6.27 mm.

[0072] For example, the radiating elements 11 of the main antenna 3 and the sub-antenna 4 are slightly different in size. Specifically, for the main antenna 3, the distance L8 between the first radiating stub 111 and the radiating body segment 1121 of the second radiating stub is 22.53 mm.

[0073] There are two connection points between the first feeder connection segment 1131 and the second feeder connection segment 1132. The distance L5 between the upper connection point and the outer edge of the third feeder connection segment 1133 is 12.26 mm, and the distance L6 between the lower connection point and the inner edge of the third feeder connection segment 1133 is 10.08 mm. The distance L7 between the outer edge of the third feeder connection segment 1133 and the outer edge of the sixth isolation segment 1216 is 28.06 mm.

[0074] For the sub-antenna 4, the distance L8' between the first radiating stub 111 and the radiating body segment 1121 of the second radiating stub is 22.35 mm. There are two connection points between the first feed line connection segment 1131 and the second feed line connection segment 1132. The distance L5' between the upper connection point and the outer edge of the third feed line connection segment 1133 is 13.92 mm, and the distance L6' between the lower connection point and the inner edge of the third feed line connection segment 1133 is 12.90 mm. The distance L7' between the outer edge of the third feed line connection segment 1133 and the outer edge of the sixth isolation segment 1216 is 28.95 mm. Furthermore, the length L9 of the extension segment 1122 of the second radiating stub is 6.05 mm.

[0075] In some embodiments, the antenna of this application further includes a grounding body (not shown in the figure), which is connected to the first grounding branch 122 and the second grounding branch 114 of the antenna assembly.

[0076] For example, the grounding electrode is a copper foil sheet.

[0077] Secondly, this application also provides an electronic device including the antenna in any of the above embodiments. For example, the antenna includes, but is not limited to, a Wi-Fi antenna. Electronic devices with the antenna of this application can also effectively solve the problem of Wi-Fi antennas at the hinge location being susceptible to electromagnetic radiation interference from external devices, improving customer satisfaction. Furthermore, the optimization of the antenna body does not increase the cost of other auxiliary materials, making it friendly to industrial design ID and structural design.

[0078] Taking a Wi-Fi antenna as an example, according to Figure 7 The antenna dimensions shown were used to create a prototype of the Wi-Fi antenna, and performance testing was then conducted on the prototype.

[0079] 1) The antenna's VSWR was tested, and the antenna's radiation performance met the requirements.

[0080] (ii): Comparison of antenna anti-interference capabilities:

[0081] Comparison Method: A reference antenna was placed at the I / O interface to simulate external device radiation. The isolation between the antenna of this application (with 2.4G metamaterial isolation stubs) and the reference antenna at the I / O interface was measured, respectively. The larger the isolation value, the lower the antenna radiation energy received at the I / O interface and the stronger the anti-interference capability. Actual measurement comparison shows that the antenna of this application has a 3dB greater isolation than the conventional antenna, and therefore its anti-interference capability is also 3dB stronger.

[0082] (iii) Comparison of electromagnetic interference signal energy received by the antenna from external devices:

[0083] Comparison Method: A USB flash drive was inserted into the I / O port of a laptop computer, and the flash drive was continuously transferring data, operating in heavy-load mode to radiate strong electromagnetic interference (EMI) signals. The strength of the EMI signal actually received by the antenna of this application and a conventional antenna was measured. The EMI energy can be measured using a spectrum analyzer by connecting the antenna to the energy input port of the spectrum analyzer via an adapter. The lower the EMI energy received by the antenna, the stronger the antenna's resistance to EMI from the USB flash drive, and the less likely the wireless signal is to be affected. The actual measurement comparison shows that the antenna using this application receives more than 5 dB less EMI signal energy from the USB flash drive than the conventional antenna.

[0084] In addition, such as Figure 9 As shown, the fabrication process of the antenna structure of this application is further explained, including: Step (1) Import the whole machine 3D model into the simulation software, and based on the available space size of the Wifi antenna and the specific position coordinates in the hinge, design the antenna whose simulation results meet the performance requirements, including the shape of the radiating stub and the metamaterial isolation stub;

[0085] Step (2) Create a DXF document from the simulated antenna design drawings with good performance and send it to the antenna factory for prototyping confirmation. After receiving the DXF document, the antenna factory will make fine adjustments according to the process requirements. After the antenna factory makes fine adjustments, it will send the DXF document back to the user for confirmation. After the user finally confirms, it will be sent to the antenna factory for prototyping.

[0086] Step (3) After receiving the sample, first test the antenna radiation performance, such as return loss, antenna efficiency, far-field radiation, H-plane gain, etc.; ensure that the antenna itself can effectively receive wireless Wi-Fi signals; if any radiation performance parameters do not meet the requirements, continue to optimize the radiation branches and return to step (2).

[0087] Step (4) After the antenna radiation performance is confirmed, test the isolation of the metamaterial isolation stub from electromagnetic interference signals of external equipment. If the isolation does not meet the requirements (isolation greater than 25dB), continue to optimize the shape of the isolation stub and return to step (2).

[0088] Step (5) Repeat steps 2) to 4) and iterate continuously; finally, an antenna that meets the performance requirements of mass-produced products and can effectively isolate electromagnetic interference signals from external equipment is obtained.

[0089] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0091] The terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0092] The terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0093] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0094] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An antenna assembly, characterized in that: The antenna assembly includes, Radiation unit; An isolation unit, connected to the radiation unit, is constructed as an electromagnetic metamaterial structure to absorb electromagnetic interference signals radiated by external devices in the target frequency band.

2. The antenna assembly according to claim 1, characterized in that: The isolation unit includes: Isolation stubs, which are used to absorb electromagnetic interference signals in the target frequency band radiated by the external equipment; The first grounding branch, the first end of the first grounding branch is connected to the isolation branch.

3. The antenna assembly according to claim 2, characterized in that: The isolated branches have a spiral bending structure, a T-shaped structure, or a ring structure.

4. The antenna assembly according to claim 2, characterized in that: The radiating element includes: First radiating branch; The second radial branch is connected to the first radial branch; A feeder stub, the first end of which is connected to the connection point of the first radiating stub and the second radiating stub; The second grounding branch has its first end connected to the second end of the feeder branch, and its second end connected to the second end of the first grounding branch.

5. The antenna assembly according to claim 4, characterized in that: The antenna assembly also includes: Feed point, wherein the feed point is located on the feed line branch; The grounding point is located on the first grounding branch and / or the second grounding branch.

6. An antenna for use in an electronic device having an I / O interface, characterized in that: It also includes a substrate and an antenna assembly as described in any one of claims 1-5, the antenna assembly being disposed on the substrate.

7. The antenna according to claim 6, characterized in that: The antenna assembly consists of two parts, both of which are mounted on the same substrate to form a main antenna and a secondary antenna, respectively. The radiating elements of the main antenna and the secondary antenna are arranged close to each other, while the isolation elements are arranged far apart.

8. The antenna according to claim 6, characterized in that: The antenna assembly consists of two parts, each mounted on a substrate to form a main antenna and a secondary antenna, respectively. The isolation units of the main antenna and the secondary antenna are located close to the I / O interface, while the radiating units are located away from the I / O interface.

9. The antenna according to any one of claims 6-8, characterized in that: It also includes a grounding electrode, which is connected to the first grounding branch and the second grounding branch of the antenna assembly.

10. An electronic device, characterized in that: It includes the antenna assembly as described in any one of claims 1-5, or the antenna as described in any one of claims 6-9.

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