Antenna assembly and electronic equipment

Abstract

The embodiment of the utility model discloses an antenna assembly and electronic equipment, and a waveguide device is arranged in a protective shell, so that the waveguide device is protected and fixed by using the protective shell. Therefore, the connector is connected with the grounding part through the protective shell, so that the waveguide structure and the protective shell form a first electrical path. The first radiator and the protective shell form a first radiation unit, the second radiator and the protective shell form a second radiation unit, and the protective shell is used for receiving and transmitting electromagnetic signals. Therefore, metal breakpoints are prevented from being formed on the protective shell, and the mechanical strength of the protective shell and the signal gain of the antenna assembly are improved. And meanwhile, the manufacturing cost of the protective shell is reduced. And on the other hand, the impedance of the second radiation unit is improved by utilizing the coupling gap between the grounding part and the second radiation body, so that when the antenna assembly is in different working frequency bands, the waveguide device and the radio frequency circuit still have better impedance characteristics, and the working bandwidth of the antenna assembly is improved.

Description

Technical Field

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

[0002] Metal breaks in the housing prevent coupling between the antenna and the housing, thus avoiding the housing's influence on the antenna's transmission and reception performance. However, metal breaks also increase manufacturing costs and affect the structural strength of the housing. Furthermore, when the antenna operates over a wide frequency band, higher-frequency electromagnetic signals can affect the antenna's impedance characteristics, thus hindering its operation at high frequencies. Therefore, improving the antenna's operating bandwidth and reducing the housing's impact on its transmission and reception performance are problems that need to be addressed. Utility Model Content

[0003] In view of this, the present invention provides an antenna assembly and electronic device that, for high-frequency electromagnetic signals, achieves transmission and reception of high-frequency electromagnetic signals by increasing the impedance of the second radiating element. Simultaneously, the first and second radiating elements can share a first electrical path, allowing high-frequency or low-frequency electromagnetic signals to be radiated outwards using the protective casing.

[0004] According to a first aspect of the present invention, an antenna assembly is provided, the antenna assembly comprising:

[0005] Radio frequency circuits;

[0006] Protective shell; and

[0007] A waveguide device is provided, wherein a protective shell covers the waveguide device, the waveguide device includes a waveguide structure electrically connected to the radio frequency circuit, the waveguide structure includes a radiating part and a grounding part, the radiating part includes a first radiator, a second radiator and a connecting part, the ends of the first radiator and the second radiator are electrically connected to one end of the connecting part, the other end of the connecting part is connected to the protective shell, and the connecting part, the protective shell and the grounding part form a first electrical path;

[0008] The first radiator is coupled with the first electrical path to form a first radiating unit, the second radiator is coupled with the grounding part to form a coupling gap, and the second radiator and the first electrical path form a second radiating unit. The operating frequency band of the second radiating unit is different from that of the first radiating unit, and the impedance of the second radiating unit is greater than that of the first radiating unit.

[0009] Furthermore, the grounding portion is adjacent to the second radiator and far from the first radiator;

[0010] The grounding part has a first connection area and a grounding area, the grounding area being located between the coupling gap and the first connection area, and the first connection area being connected to the protective shell.

[0011] Furthermore, the protective shell includes a first shell portion and a second shell portion, the first shell portion and the second shell portion being fastened together to form an accommodating area, and the first shell portion including a frame;

[0012] The waveguide device is disposed in the receiving area, and the waveguide device further includes a substrate. At least a portion of the waveguide structure is disposed on the substrate. The substrate is fixedly connected to the first shell portion, and the first connection area abuts against the frame.

[0013] Furthermore, the frame has a positioning groove facing the inside of the first shell portion;

[0014] The substrate includes a positioning protrusion that protrudes from the edge of the substrate. The first connecting area is located on the positioning protrusion. The positioning protrusion is inserted into the positioning groove, and the first connecting area abuts against the inner wall of the positioning groove.

[0015] Furthermore, the connector extends in a direction away from the grounding portion;

[0016] One end of the second radiator has a feed area, and the other end of the second radiator extends away from the first radiator. The grounding part is located on the side of the second radiator away from the connector.

[0017] Furthermore, the waveguide structure includes a conductive pattern and the connector. The conductive pattern includes a ground portion, a first radiator, a second radiator, and a second connection region. The first radiator and the second radiator extend from the second connection region to both sides. The connector is a conductive foil.

[0018] The waveguide device further includes a substrate, on which the conductive pattern is disposed, and one end of the conductive foil is attached to the second connection area and the other end is attached to the protective shell.

[0019] Furthermore, the protective shell includes a first shell portion and a second shell portion, the first shell portion and the second shell portion being fastened together, the first shell portion having a mounting surface, and the mounting surface having a mounting groove facing the second shell portion;

[0020] The waveguide device is disposed in the mounting groove, and the conductive foil extends from the second connection area to the mounting surface and is electrically connected to the mounting surface.

[0021] Furthermore, the conductive pattern also includes a third connection area, which is located on the side of the first radiator near the mounting surface. The conductive foil is electrically connected to the third connection area through the mounting surface to form a second electrical path, and the first radiator is coupled to the second electrical path.

[0022] Furthermore, the grounding part has a grounding area;

[0023] The antenna assembly also includes a coaxial cable having a connection end, the connection end including an inner conductor and an outer conductor;

[0024] The connection end bends from the grounding portion toward the second radiator, and the outer conductor is connected to the grounding area, while the inner conductor is connected to the feed area.

[0025] Secondly, this utility model embodiment also provides an electronic device, the electronic device comprising:

[0026] The antenna assembly described in the first aspect above.

[0027] In this embodiment, the antenna assembly and electronic device house the waveguide device within a protective housing, thereby protecting and securing the waveguide device. The connector is connected to the grounding portion through the protective housing, forming a first electrical path between the waveguide structure and the protective housing. A first radiator and a second radiator form a first radiating element and a second radiating element with the protective housing, respectively, to transmit and receive electromagnetic signals using the protective housing. This avoids creating metal breaks in the protective housing, improving its mechanical strength and the signal gain of the antenna assembly. Simultaneously, it reduces the manufacturing cost of the protective housing. Furthermore, the coupling gap between the grounding portion and the second radiator increases the impedance of the second radiating element, ensuring that the waveguide device and RF circuit maintain good impedance characteristics even when the antenna assembly operates at different frequency bands, and also improving the operating bandwidth of the antenna assembly. Attached Figure Description

[0028] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a schematic diagram of the antenna assembly according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the waveguide device and the first housing according to an embodiment of the present invention;

[0031] Figure 3 This is an exploded view of the waveguide device according to an embodiment of the present invention;

[0032] Figure 4This is a schematic diagram of the structure of the first shell portion according to an embodiment of the present utility model;

[0033] Figure 5 This is a schematic diagram of the waveguide structure according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the current flow direction on one side of the antenna assembly according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the current flow direction on the other side of the antenna assembly according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the electronic device according to an embodiment of the present invention;

[0037] Figure 9 This is an exploded view of the electronic device according to an embodiment of the present invention;

[0038] Figure 10 This is a simulation diagram of the return loss of the antenna assembly according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-Waveguide device;

[0041] 11-Waveguide structure;

[0042] 12-Substrate; 121-Positioning protrusion;

[0043] 13-Coupling gap; 131-First segment; 132-Second segment; 133-Third segment;

[0044] 14-Conductive pattern;

[0045] 15 - Second connection area;

[0046] 16 - Third connection area;

[0047] 2-Protective shell;

[0048] 21-Accommodation Area;

[0049] 22-First shell portion; 221-Frame; 222-Positioning groove; 223-Mounting surface; 224-Mounting groove; 225-First side plate;

[0050] 23-Second shell;

[0051] 3-Radiating section;

[0052] 31-First radiator; 311-First extension branch; 312-Second extension branch; 313-Third extension branch;

[0053] 32 - Second radiator; 321 - Feeding region;

[0054] 33-Connector;

[0055] 4-Grounding part;

[0056] 41-First connection area; 42-Connection area;

[0057] 51 - First radiating unit; 52 - Second radiating unit;

[0058] 6-Coaxial cable;

[0059] 61-Connecting end; 62-Inner conductor; 63-Outer conductor. Detailed Implementation

[0060] The present invention will now be described based on embodiments, but it is not limited to these embodiments. In the following detailed description of the present invention, certain specific details are described in detail. Those skilled in the art will fully understand the present invention even without these details. To avoid obscuring the essence of the present invention, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0061] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0062] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0063] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0064] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] For ease of explanation, spatially related terms such as “inside,” “outside,” “below,” “below,” “lower,” “above,” “upper,” etc., are used herein to describe the relationship between one element or feature illustrated in the figure and another. It will be understood that spatially related terms may be intended to encompass different orientations of the device in use or operation besides those depicted in the figure. For example, if the device in the figure is flipped, an element described as “below” or “below” another element or feature would then be positioned “above” that other element or feature. Thus, the exemplified term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein should be interpreted accordingly.

[0066] Figure 1 This is a schematic diagram of the antenna assembly in this embodiment. Figure 1 The image shows a portion of the protective casing 2 for the antenna assembly. Figure 2 This is a schematic diagram of the waveguide device 1 and the first housing 22 in this embodiment. Figure 2 The enlarged view in the figure shows an enlarged schematic diagram of the connection end 61 of the coaxial cable 6.

[0067] In some implementations, such as Figures 1-2 As shown, the antenna assembly in this embodiment includes a waveguide device 1 and a protective shell 2. The protective shell 2 is provided with a receiving area 21. This receiving area 21 is used to house the waveguide device 1. The waveguide device 1 includes a waveguide structure 11. Thus, the protective shell 2 protects the waveguide device 1. At the same time, the protective shell 2 can also conduct electricity, making the protective shell 2 part of an electrical path.

[0068] Figure 3 This is an exploded schematic diagram of the waveguide device 1 in this embodiment. Figure 4 This is a schematic diagram of the structure of the first shell portion 22 in this embodiment. Figure 5 This is a schematic diagram of the waveguide structure 11 in this embodiment.

[0069] Figure 5 The outline of the conductive pattern 14 is shown with a thick solid line, and the outline of the connector 33 is shown with a dotted line.

[0070] In some implementations, such as Figure 3As shown, the waveguide structure 11 includes a radiating portion 3 and a grounding portion 4 spaced apart. The radiating portion 3 includes a first radiator 31, a second radiator 32, and a connector 33. The ends of the first radiator 31 and the second radiator 32 on opposite sides are electrically connected to one end of the connector 33, and the other end of the connector 33 is connected to the protective shell 2. The connector 33, the protective shell 2, and the grounding portion 4 form a first electrical path. That is, the connector 33 and the grounding portion 4 are spaced apart, and the connector 33 is electrically connected to the grounding portion 4 through the protective shell 2.

[0071] Optionally, the first radiator 31 and the second radiator 32 can be equivalent to two microstrip antennas, and the lengths of the first radiator 31 and the second radiator 32 in the extending direction are related to the operating frequency band. For example, the lengths of the first radiator 31 and the second radiator 32 can be configured to be a quarter wavelength or half wavelength of the operating frequency band.

[0072] Figure 6 and Figure 7 This is a schematic diagram of the current flow direction of the antenna assembly in this embodiment. The arrows in the diagram indicate the direction of current flow. Figure 6 and Figure 7 The middle arrow a1 shows the current flow direction of the first electrical path, and the arrow a2 shows the current flow direction of the second electrical path. Figure 6 The diagram shows the approximate regional distribution of the first radiating unit 51 and the second radiating unit 52.

[0073] Further reference Figures 6-7 As shown, the first radiator 31 is coupled with the first electrical path to form the first radiating unit 51. A coupling gap 13 is formed between the second radiator 32 and the grounding portion 4 (e.g., ...). Figure 5 As shown in the figure, the second radiator 32 and the first electrical path form a second radiation unit 52. That is, the operating frequency of the second radiation unit 52 is higher than that of the first radiation unit 51.

[0074] Specifically, a closed or substantially closed metal cavity is formed on the inner side of the protective shell 2. A portion of the metal cavity is used to form the receiving area 21. The receiving area 21 is located at the edge of the metal cavity, and the protective shell 2 does not have a metal break at the location of the receiving area 21. In this embodiment, the electromagnetic signals generated by the first radiator 31 and the second radiator 32 are coupled with the protective shell 2, allowing the waveguide structure 11 to radiate electromagnetic signals to the outside through the protective shell 2. This prevents the electromagnetic signals generated by the waveguide device 1 from being shielded by the protective shell 2, thus avoiding impact on the transmission and reception performance of the antenna assembly. Simultaneously, it allows the antenna assembly to operate at a lower operating frequency band.

[0075] Furthermore, in this embodiment, the waveguide structure 11 is configured such that the impedance of the second radiating element 52 is greater than the impedance of the first radiating element 51, and the operating frequency band of the second radiating element 52 is different from that of the first radiating element 51.

[0076] Furthermore, the antenna assembly also includes a radio frequency (RF) circuit. The RF circuit is electrically connected to the waveguide structure 11 to feed or receive electromagnetic signals. When the operating frequency of the antenna assembly changes from a low-frequency band to a high-frequency band, the increased frequency can lead to an increase in the impedance of the RF circuit. In this configuration, the impedance of the second radiating element 52 is correspondingly increased, allowing the second radiating element 52 to match the impedance of the RF circuit at high frequencies. This optimizes the impedance characteristics between the second radiating element 52 and the RF circuit and simplifies the matching network of the RF circuit itself.

[0077] It is easy to understand that in this embodiment, the first radiating element 51 is used to radiate low-frequency electromagnetic signals, and the second radiating element 52 is used to radiate high-frequency electromagnetic signals. The second radiating element 52 can be considered equivalent to a high-impedance antenna. The second radiating element 52 has an impedance greater than that of the first radiating element 51. To improve the impedance of the second radiating element 52, in this embodiment, the second radiator 32 is configured to be closer to the grounding portion 4 relative to the first radiator 31. The grounding portion 4 and the second radiator 32 are arranged adjacent to each other to form a coupling gap 13. Therefore, those skilled in the art can further adjust the impedance characteristics of the second radiating element 52 by changing the width or length of the coupling gap 13.

[0078] Preferably, the coupling gap 13 is bent. Figure 5 The figure illustrates a specific bending form. The coupling gap 13 in the figure extends along a direction comprising a first segment 131, a second segment 132, and a third segment 133, all of which extend in a straight line. The second segment 132 connects the first segment 131 and the third segment 133, and is perpendicular to both segments. The extension direction of the second segment 132 is parallel to the extension direction of the connecting body 33. Thus, within a limited space, the length of the coupling gap 13 is increased, thereby increasing the current path at the edge of the coupling gap 13 and improving the impedance of the second radiating unit 52.

[0079] Optionally, the impedance of the first radiating unit 51 is configured to be 50Ω. The impedance of the second radiating unit 52 is configured to be greater than 50Ω. In this embodiment, the impedance of the second radiating unit 52 is affected by factors such as the length of the second radiator 32, the length of the grounding portion 4, and the operating frequency, causing the impedance value of the second radiating unit 52 to change. Those skilled in the art can measure or adjust according to the above conditions.

[0080] Specifically, the impedance of the second radiating element 52 can be 75Ω to 150Ω. For example, the impedance of the second radiating element 52 can be 100Ω. This improves the radiation efficiency and suppresses coupling between the first radiating element 51 and the second radiating element 52.

[0081] In summary, in this embodiment, the waveguide device 1 is housed within the protective shell 2, thereby protecting and securing the waveguide device 1. The connector 33 connects to the grounding portion 4 via the protective shell 2, forming a first electrical path between the waveguide structure 11 and the protective shell 2. The first radiator 31 and the second radiator 32 form the first radiating element 51 and the second radiating element 52 with the protective shell 2, respectively, to transmit and receive electromagnetic signals using the protective shell 2. This avoids creating metal breaks in the protective shell 2, improving its mechanical strength and the signal gain of the antenna assembly. Simultaneously, it reduces the manufacturing cost of the protective shell 2. Furthermore, the coupling gap 13 between the grounding portion 4 and the second radiator 32 increases the impedance of the second radiating element 52, ensuring that the waveguide device 1 and the RF circuit maintain good impedance characteristics even at different operating frequency bands, and also improving the operating bandwidth of the antenna assembly.

[0082] In some implementations, such as Figure 5 As shown, the grounding part 4 is adjacent to the second radiator 32 and away from the first radiator 31. The grounding part 4 has a first connection area 41 and a grounding area 42, the grounding area 42 being located between the coupling gap 13 and the first connection area 41, and the first connection area 41 being connected to the protective shell 2.

[0083] Specifically, the feed area 321 and the grounding area 42 are located on opposite sides of the coupling gap 13. In this embodiment, the current on the protective shell 2 can return from the first connection area 41 to the grounding part 4 and flow out from the grounding area 42. As a result, a higher potential difference is formed on the two sides of the coupling gap 13, causing the coupling gap 13 to form an equivalent capacitance and increasing the impedance of the second radiating unit 52 relative to the first radiating unit 51.

[0084] In some implementations, such as Figures 1-2 As shown, the protective shell 2 includes a first shell portion 22 and a second shell portion 23. The first shell portion 22 and the second shell portion 23 are fastened together to form an accommodating area 21. The first shell portion 22 includes a frame 221. Further referencing... Figure 3 As shown, the waveguide device 1 also includes a substrate 12, on which at least a portion of the waveguide structure 11 is disposed. The substrate 12 is fixedly connected to the first housing portion 22, and the first connection area 41 abuts against the frame 221. In this embodiment, the substrate 12 is used to support the waveguide structure 11 and to connect the waveguide structure 11 to the protective housing 2.

[0085] Specifically, in this embodiment, the frame 221 has an L-shaped structure and surrounds one side of the waveguide structure 11. This facilitates the connection between the protective shell 2 and the waveguide structure 11. The operator can first install the waveguide device 1 on the first shell 22, and then cover the first shell 22 with the second shell 23.

[0086] In some implementations, such as Figure 4 As shown, the frame 221 has a positioning groove 222, which faces the inside of the first housing portion 22. Further referencing... Figure 3 As shown, the substrate 12 includes a positioning protrusion 121. The positioning protrusion 121 protrudes from the edge of the substrate 12, and the first connection area 41 is located on the positioning protrusion 121. The positioning protrusion 121 is inserted into the positioning groove 222, and the first connection area 41 abuts against the inner wall of the positioning groove 222. In this embodiment, the cooperation between the positioning groove 222 and the positioning protrusion 121 is used to realize the mutual positioning of the waveguide device 1 and the protective shell 2, and to realize the electrical connection between the first connection area 41 and the frame 221.

[0087] In some implementations, such as Figures 2-3 As shown, connector 33 extends away from grounding portion 4. Further referencing... Figure 5 As shown, one end of the second radiator 32 has a feed area 321, and the other end of the second radiator 32 extends away from the first radiator 31. The grounding part 4 is located on the side of the second radiator 32 away from the connector 33. In this embodiment, the connector 33 and the grounding part 4 increase the current flow distance in the first electrical path, ensuring that the protective shell 2 has sufficient area to participate in the reception or transmission of electromagnetic signals.

[0088] In some implementations, such as Figures 3-5 As shown, the waveguide structure 11 includes a conductive pattern 14 and a connector 33. The conductive pattern 14 includes a ground portion 4, a first radiator 31, a second radiator 32, and a second connection region 15. The first radiator 31 and the second radiator 32 extend to both sides from the second connection region 15, and the connector 33 is a conductive foil. The waveguide device 1 also includes a substrate 12, on which the conductive pattern 14 is disposed. One end of the conductive foil is attached to the second connection region 15, and the other end is attached to the protective shell 2.

[0089] Specifically, in this embodiment, the substrate 12 can be a circuit board, for example, made of glass fiber reinforced epoxy resin (FR-4). The first housing portion 22 includes a frame 221 and a first side plate 225. The edge of the first side plate 225 is connected to the frame 221, and the first side plate 225 is located on the side of the substrate 12 opposite to the conductive pattern 14. The substrate 12 located between the conductive pattern 14 and the first side plate 225 can adjust the performance of the antenna assembly and expand the antenna bandwidth.

[0090] In some implementations, such as Figure 1 and Figure 4 As shown, the protective shell 2 includes a first shell portion 22 and a second shell portion 23. The first shell portion 22 and the second shell portion 23 are fastened together to form a receiving area 21. The first shell portion 22 has a mounting surface 223, and the mounting surface 223 has a mounting groove 224 facing the second shell portion 23. Further referencing... Figure 2As shown, the waveguide device 1 is disposed in the mounting groove 224, and the conductive foil extends from the second connection area 15 to the mounting surface 223 and is electrically connected to the mounting surface 223.

[0091] Specifically, the mounting surface 223 protrudes from the side of the first side plate 225 facing the receiving area 21. The mounting groove 224 is located between the mounting surface 223 and the frame 221. When one end of the connector 33 overlaps with the mounting surface 223, the connector 33 can be electrically connected to the first side plate 225.

[0092] Preferably, the conductive foil can be configured as copper foil. One end of the connector 33 is welded to the second connection area 15, and the other end is attached to the first housing portion 22. After the conductive foil is attached, some areas will be bent to compensate for the height difference between the substrate 12 and the mounting surface 223. At the same time, the conductive foil is used to achieve electrical connection between the substrate 12 and the conductive pattern 14 and the first housing portion 22.

[0093] In some implementations, such as Figures 5-6 As shown, the conductive pattern 14 also includes a third connection region 16. The third connection region 16 is located on the side of the first radiator 31 near the mounting surface 223. The conductive foil is electrically connected to the third connection region 16 through the mounting surface 223 to form a second electrical path, and the first radiator 31 is coupled to the second electrical path.

[0094] Specifically, in this embodiment, the third connection area 16, the first side plate 225, and the connector 33 form a second electrical path. Current on the connector 33 is conducted through the mounting surface 223 to the third connection area 16 (e.g., ...). Figure 6 (As shown by the middle arrow a2). Thus, the second electrical path, together with the first electrical path and the first radiator 31, can form the first radiating unit 51. Furthermore, this increases the coupling strength between the first radiator 31 and the first housing 22, widens the bandwidth of the first radiating unit 51, and enables the first radiating unit 51 to operate at a lower frequency band.

[0095] Optionally, the third connection area 16 can be configured to extend to the edge of the substrate 12, and when the waveguide device 1 is disposed in the mounting groove 224, the third connection area 16 can abut against the side wall of the mounting groove 224. Alternatively, another conductive foil can be attached to the third connection area 16 and the mounting surface 223, thereby realizing the electrical connection between the third connection area 16 and the connector 33 through the first housing portion 22.

[0096] Preferably, such as Figure 5As shown, the first radiator 31 includes a first extension branch 311, a second extension branch 312, and a third extension branch 313 connected in sequence. The two ends of the first extension branch 311 are connected to the second extension branch 312 and the second connection area 15, respectively. The third connection area 16 and the third extension branch 313 are simultaneously connected to the second extension branch 312. The first extension branch 311 and the second extension branch 312 extend away from the connector 33, while the third extension branch 313 extends towards the grounding portion 4, causing the end of the first radiator 31 to bend towards the grounding portion 4. Furthermore, the third extension branch 313 is closer to the frame 221 than the first extension branch 311. This increases the coupling strength between the first radiator 31 and the frame 221, thereby improving the radiation gain of the first radiating unit 51.

[0097] In some implementations, such as Figure 5 As shown, the grounding part 4 has a grounding area 42. Further referencing... Figure 2 As shown, the antenna assembly also includes a coaxial cable 6. The coaxial cable 6 has a connection end 61, which includes an inner conductor 62 and an outer conductor 63. The inner conductor 62 is a wire core, and the outer conductor 63 is a braided layer. The connection end 61 bends from the grounding portion 4 towards the second radiator 32, and the outer conductor 63 is connected to the grounding area 42, while the inner conductor 62 is connected to the feed area 321. Thus, the coaxial cable 6 provides feeding for the second radiator 32 and grounding for the grounding portion 4. Furthermore, it reduces reflection loss within the antenna assembly and shields electromagnetic signals.

[0098] Figure 8 This is a schematic diagram of the structure of the electronic device in this embodiment. Figure 9 This is an exploded view of the electronic device in this embodiment.

[0099] In some implementations, such as Figures 8-9 As shown, the antenna assembly described above can be applied to electronic devices. These electronic devices can be laptops, mobile phones, or smartwatches. Taking a laptop as an example, the protective shell 2 forms the outer casing of the laptop, where the second shell portion 23 is the top cover of the main unit; that is, when the laptop is folded, the second shell portion 23 is attached to the display screen. The first shell portion 22 is the bottom cover of the main unit, and the first side panel 225 is located at the bottom of the laptop. The L-shaped structure is located at the top corner of the main unit.

[0100] In summary, in this embodiment, the waveguide device 1 is housed within the protective shell 2, thereby protecting and securing the waveguide device 1. The connector 33 connects to the grounding portion 4 via the protective shell 2, forming a first electrical path between the waveguide structure 11 and the protective shell 2. The first radiator 31 and the second radiator 32 form the first radiating element 51 and the second radiating element 52 with the protective shell 2, respectively, to transmit and receive electromagnetic signals using the protective shell 2. This avoids creating metal breaks in the protective shell 2, improving its mechanical strength and the signal gain of the antenna assembly. Simultaneously, it reduces the manufacturing cost of the protective shell 2. Furthermore, the coupling gap 13 between the grounding portion 4 and the second radiator 32 increases the impedance of the second radiating element 52, ensuring that the waveguide device 1 and the RF circuit maintain good impedance characteristics even at different operating frequency bands, and also improving the operating bandwidth of the antenna assembly.

[0101] Figure 10 This is a simulation diagram of the return loss of the antenna assembly in this embodiment. As can be seen from the figure, the return loss of the antenna assembly of the electronic device is basically below -6dB from the low frequency band of 1.45GHz to 1.9GHz to the high frequency band of 1.9GHz to 2.4GHz, so the radiation efficiency of the antenna assembly meets the requirements. For example, mobile communication can use the first radiating element 51, and WIFI signals and Bluetooth signals can reuse the second radiating element 52.

[0102] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principle of this utility model should be included within the protection scope of this utility model.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: Radio frequency circuits; Protective shell (2); and A waveguide device (1) is provided, and a protective shell (2) covers the waveguide device (1). The waveguide device (1) includes a waveguide structure (11) electrically connected to the radio frequency circuit. The waveguide structure (11) includes a radiating part (3) and a grounding part (4). The radiating part (3) includes a first radiator (31), a second radiator (32), and a connector (33). The ends of the first radiator (31) and the second radiator (32) are electrically connected to one end of the connector (33). The other end of the connector (33) is connected to the protective shell (2), and the connector (33) forms a first electrical path with the protective shell (2) and the grounding part (4). The first radiator (31) is coupled with the first electrical path to form a first radiating unit (51), the second radiator (32) forms a coupling gap (13) with the grounding part (4), and the second radiator (32) and the first electrical path form a second radiating unit (52), wherein the operating frequency band of the second radiating unit (52) is different from that of the first radiating unit (51), and the impedance of the second radiating unit (52) is greater than that of the first radiating unit (51).

2. The antenna assembly according to claim 1, characterized in that, The grounding part (4) is adjacent to the second radiator (32) and far away from the first radiator (31); The grounding part (4) has a first connection area (41) and a grounding area (42), the grounding area (42) being located between the coupling gap (13) and the first connection area (41), and the first connection area (41) being connected to the protective shell (2).

3. The antenna assembly according to claim 2, characterized in that, The protective shell (2) includes a first shell portion (22) and a second shell portion (23), the first shell portion (22) and the second shell portion (23) are fastened together to form an accommodating area (21), and the first shell portion (22) includes a frame (221); The waveguide device (1) is disposed in the receiving area (21). The waveguide device (1) also includes a substrate (12). At least a portion of the waveguide structure (11) is disposed on the substrate (12). The substrate (12) is fixedly connected to the first shell portion (22), and the first connection area (41) abuts against the frame (221).

4. The antenna assembly according to claim 3, characterized in that, The frame (221) has a positioning groove (222) facing the inside of the first shell portion (22); The substrate (12) includes a positioning protrusion (121) which protrudes from the edge of the substrate (12). The first connecting area (41) is located on the positioning protrusion (121). The positioning protrusion (121) is inserted into the positioning groove (222). The first connecting area (41) abuts against the inner wall of the positioning groove (222).

5. The antenna assembly according to claim 1, characterized in that, The connector (33) extends away from the grounding part (4); One end of the second radiator (32) has a feed area (321), and the other end of the second radiator (32) extends away from the first radiator (31). The grounding part (4) is located on the side of the second radiator (32) away from the connector (33).

6. The antenna assembly according to claim 5, characterized in that, The waveguide structure (11) includes a conductive pattern (14) and a connector (33). The conductive pattern (14) includes a ground portion (4), a first radiator (31), a second radiator (32), and a second connection area (15). The first radiator (31) and the second radiator (32) extend to both sides from the second connection area (15). The connector (33) is a conductive foil. The waveguide device (1) further includes a substrate (12), the conductive pattern (14) is disposed on the substrate (12), one end of the conductive foil is attached to the second connection area (15), and the other end is attached to the protective shell (2).

7. The antenna assembly according to claim 6, characterized in that, The protective shell (2) includes a first shell part (22) and a second shell part (23), the first shell part (22) and the second shell part (23) are fastened together, the first shell part (22) has a mounting surface (223), the mounting surface (223) has a mounting groove (224) facing the second shell part (23); The waveguide device (1) is disposed in the mounting groove (224), and the conductive foil extends from the second connection area (15) to the mounting surface (223) and is electrically connected to the mounting surface (223).

8. The antenna assembly according to claim 7, characterized in that, The conductive pattern (14) further includes a third connection area (16), which is located on the side of the first radiator (31) near the mounting surface (223). The conductive foil is electrically connected to the third connection area (16) through the mounting surface (223) to form a second electrical path, and the first radiator (31) is coupled to the second electrical path.

9. The antenna assembly according to claim 5, characterized in that, The grounding part (4) has a grounding area (42); The antenna assembly further includes a coaxial cable (6) having a connection end (61) including an inner conductor (62) and an outer conductor (63); The connection end (61) bends from the grounding part (4) toward the second radiator (32), and the outer conductor (63) is connected to the grounding area (42), while the inner conductor (62) is connected to the feed area (321).

10. An electronic device, characterized in that, The electronic device includes: The antenna assembly according to any one of claims 1-9.

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