Radiating elements, antenna components, electronic devices

Abstract

The embodiments of the present invention disclose a radiation unit, an antenna assembly, an electronic device, and a method for manufacturing the radiation unit, wherein a ceramic dielectric portion is used to form a layout surface and a connecting through hole to layout a strip radiation portion thereon. Thus, the multi-layer layout surface can provide support for the strip radiation portion, so that the strip radiation portion can be stacked and laid out along the height direction of the ceramic dielectric portion, thereby reducing the space occupied. On the other hand, the electromagnetic signal on the strip radiation portion is constrained by the ceramic dielectric portion to prevent the electromagnetic signal from leaking to the outside of the radiation unit. On the other hand, the radiation unit can adjust the connection method and quantity of each dielectric plate according to the requirements of the antenna assembly. The manufacturing process of the radiation unit is simplified, and the modular production requirements of the product are met. On the other hand, the radiation unit is set in the middle position of the radiation arm of the antenna assembly, and the technicians in this field can adjust the operating frequency of the antenna assembly by changing the length of the first arm section.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a radiation unit, an antenna assembly, an electronic device and a method for manufacturing the radiation unit. Background Art

[0002] With the continuous development of 3C electronic products, their performance has been continuously improved. Users have correspondingly higher requirements for product miniaturization and functional integration. This requires that the internal components of the product be smaller in size and more powerful in function. Antennas are important communication components for such products, and their performance has a direct impact on communication. How to reduce the internal space occupied by antennas in products while meeting the product's demand for communication performance has become a problem that needs to be solved. Summary of the invention

[0003] In view of this, the embodiments of the present invention provide a radiation unit, an antenna assembly, an electronic device and a method for manufacturing the radiation unit, wherein the strip radiation portion is arranged on a layout surface formed by a ceramic dielectric portion, thereby reducing the space occupied by the antenna assembly provided with the radiation unit.

[0004] According to a first aspect of an embodiment of the present invention, there is provided a radiation unit comprising:

[0005] The ceramic dielectric part is provided with a plurality of layout surfaces and a plurality of connecting through holes, wherein the layout surfaces of the plurality of layers are arranged at intervals, and two adjacent layout surfaces are connected through the connecting through holes; and

[0006] A strip radiating portion, wherein the strip radiating portion includes a first connection end, a plurality of bending sections and a second connection end in an extension direction, wherein the plurality of bending sections are electrically connected in sequence and the first connection end and the second connection end are located at two ends of the strip radiating portion, and two adjacent bending sections are arranged on different arrangement surfaces and electrically connected through the connecting through hole, and the first connection end and the second connection end are electrically connected to a radiating arm of an antenna assembly through the arrangement surface or the connecting through hole;

[0007] The plurality of bending sections have a first arrangement state and / or a second arrangement state on the ceramic dielectric portion, and in the first arrangement state, at least a portion of the strip-shaped radiation portions sequentially pass through each of the layout surfaces;

[0008] In the second arrangement state, at least part of the strip-shaped radiating portions extend alternately between two layers of the layout surfaces.

[0009] Furthermore, the bending section includes:

[0010] A plurality of first branches and a plurality of second branches, wherein the plurality of first branches are arranged at intervals along a first direction, the second branches extend along the first direction, and two ends of the second branches are connected to two adjacent first branches.

[0011] Further, the ceramic dielectric part includes a plurality of dielectric plates, and at least part of the dielectric plates includes the layout surface and the bonding surface;

[0012] A plurality of the dielectric plates are stacked and each of the layout surfaces is arranged opposite to the joint surface, and two dielectric plates are connected via the joint surface and the layout surface.

[0013] Furthermore, the plurality of dielectric plates include:

[0014] A bottom plate, wherein the connecting through holes on the bottom plate include a first connecting through hole and a second connecting through hole, and the first connecting through hole and the second connecting through hole are respectively located on two sides of the bottom plate;

[0015] The first connection end and the second connection end pass through the first connection through hole and the second connection through hole respectively;

[0016] The radiation unit further includes a plurality of connectors, which are disposed at the first connection through hole and the second connection through hole, and have one end electrically connected to the strip-shaped radiation portion and the other end exposed to the bottom of the base plate.

[0017] Furthermore, the plurality of medium plates further include:

[0018] a top plate, the top plate comprising the joint surface and a top surface facing away from each other; and

[0019] At least one middle plate is stacked and arranged between the bottom plate and the top plate, the middle plate is provided with the layout surface and the joint surface, and the joint surface of the top plate faces the middle plate.

[0020] Furthermore, in the first arrangement state, the extension directions of the strip-shaped radiation portions on the two adjacent layout surfaces are opposite;

[0021] In the arrangement direction of the multiple layers of the layout surfaces, one ends of the two bending sections on two adjacent layout surfaces overlap and are electrically connected through the connecting through hole.

[0022] Furthermore, the plurality of bending sections include a plurality of first bending sections at intervals and a plurality of second bending sections at intervals, and two adjacent second bending sections are connected by one of the first bending sections;

[0023] The layout surface includes a first layout surface and a second layout surface that are adjacent to each other;

[0024] A plurality of segments of the first bending sections are arranged on the first layout surface, and a plurality of segments of the second bending sections are arranged on the second layout surface. In the arrangement direction of the first layout surface and the second layout surface, one end of adjacent first bending sections and second bending sections overlap and are electrically connected through the connecting through hole.

[0025] Furthermore, the radiation unit comprises:

[0026] A conductive filler is filled in the connecting through hole, and each section of the bending interval is electrically connected through the conductive filler.

[0027] In a second aspect, an embodiment of the present invention further provides an antenna assembly comprising:

[0028] substrate;

[0029] a radiation arm, arranged on the substrate and comprising a first arm section and a second arm section, the first arm section and the second arm section are arranged at an interval, and the second arm section comprises a feeding point and a grounding point; and

[0030] A radiation unit, comprising a ceramic dielectric portion and a strip radiation portion, wherein the ceramic dielectric portion is provided with a plurality of layout surfaces and a plurality of connecting through holes, wherein the plurality of layout surfaces are arranged at intervals, and two adjacent layout surfaces are connected through the connecting through holes, wherein the extension direction of the strip radiation portion comprises a first connection end, a plurality of bending sections, and a second connection end, wherein the plurality of bending sections are electrically connected in sequence and the first connection end and the second connection end are located at two ends of the strip radiation portion, and two adjacent bending sections are arranged on different layout surfaces and electrically connected through the connecting through holes, and the first connection end and the second connection end are electrically connected to the first arm section and the second arm section respectively through the layout surface or the connecting through holes;

[0031] The plurality of bending sections have a first arrangement state and / or a second arrangement state on the ceramic dielectric portion, and in the first arrangement state, at least a portion of the strip-shaped radiation portions sequentially pass through each of the layout surfaces;

[0032] In the second arrangement state, at least part of the strip-shaped radiating portions extend alternately between two layers of the layout surfaces.

[0033] Further, the ceramic dielectric part includes a plurality of dielectric plates, and at least part of the dielectric plates includes the layout surface and the bonding surface;

[0034] A plurality of the dielectric plates are stacked and each of the layout surfaces is arranged opposite to the joint surface, and two dielectric plates are connected via the joint surface and the layout surface;

[0035] The plurality of dielectric plates include:

[0036] A bottom plate, wherein the connecting through holes on the bottom plate include a first connecting through hole and a second connecting through hole, and the first connecting through hole and the second connecting through hole are respectively located on two sides of the bottom plate;

[0037] The first connection end and the second connection end pass through the first connection through hole and the second connection through hole respectively;

[0038] The radiation unit further includes a plurality of connectors, which are disposed in the first connection through hole and the second connection through hole and are electrically connected to the strip-shaped radiation portion;

[0039] The radiation unit is disposed between the first arm section and the second arm section, and the connecting pieces in the first connecting through hole and the second connecting through hole are respectively in contact with the first arm section and the second arm section.

[0040] Furthermore, the antenna assembly comprises:

[0041] Feed branch;

[0042] A grounding sheet, arranged on one side of the substrate and including a clearance area;

[0043] The radiating arm and the radiating unit are arranged in the clearance area, the grounding point is located at one end of the second arm section away from the radiating unit and connected to the grounding plate, and the feeding point is located at one end of the second arm section away from the grounding point and connected to the feeding branch.

[0044] In a third aspect, an embodiment of the present invention further provides an electronic device including:

[0045] According to the antenna assembly described in the second aspect above.

[0046] In a fourth aspect, an embodiment of the present invention further provides a method for manufacturing a radiation unit, including:

[0047] Dividing the ceramic material roll into a plurality of dielectric plates, wherein the plate surfaces of the dielectric plates form the layout surfaces;

[0048] Punching the dielectric plate to form connecting through holes;

[0049] Filling the connecting through hole with a conductive filler;

[0050] Printing bending sections on the layout surface of the dielectric plate, wherein the bending sections of each dielectric plate are electrically connected through the conductive filler to form a strip-shaped radiation portion;

[0051] Stacking a plurality of the dielectric plates in a predetermined order and electrically connecting them accordingly;

[0052] Pressing the stacked plurality of dielectric plates together;

[0053] The pressed plurality of dielectric plates are sintered.

[0054] The radiation unit, antenna assembly, electronic device and radiation unit manufacturing method of the embodiment of the present invention use a ceramic dielectric part to form a layout surface and a connecting through hole to layout the strip radiation part thereon. Thus, on the one hand, the multi-layer layout surface can provide support for the strip radiation part, which is convenient for stacking and arranging the strip radiation part along the height direction of the ceramic dielectric part, reducing the space occupied by the strip radiation part. On the other hand, each adjacent bending section is arranged on a different layout surface and each layout surface is connected by a connecting through hole. When the electromagnetic signal is conducted along the strip radiation part, it can always be inside the ceramic dielectric part. Thus, the electromagnetic signal on the strip radiation part is constrained by the ceramic dielectric part to prevent the electromagnetic signal from leaking to the outside of the radiation unit. On the other hand, bending sections are respectively set on each layout surface and connected through connecting through holes, so that during the manufacturing process of the radiation unit, a plurality of independent dielectric plates with layout surfaces can be first produced, and then each dielectric plate can be electrically connected accordingly. The radiation unit can adjust the joining method and quantity of each dielectric plate according to the needs of the antenna assembly. Thus, the manufacturing process of the radiation unit is simplified and the modular production requirements of the product are met. On the other hand, by setting the radiation unit in the middle of the radiation arm of the antenna assembly, technicians in this field can adjust the operating frequency of the antenna assembly by changing the length of the first arm section, which greatly shortens the trial production cycle of the antenna assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0056] Figure 1 It is a schematic diagram of the structure of an electronic device in the related art;

[0057] Figure 2 is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;

[0058] Figure 3 is an exploded schematic diagram of an antenna assembly according to an embodiment of the present invention;

[0059] Figure 4 is a schematic structural diagram of a radiation unit according to an embodiment of the present invention;

[0060] Figure 5 is an exploded schematic diagram of a radiation unit in some implementation modes of an embodiment of the present invention;

[0061] Figure 6is an exploded schematic diagram of a radiation unit in another embodiment of the present invention;

[0062] Figure 7 is a schematic diagram of the connection between the strip radiating portion and the radiating arm according to an embodiment of the present invention;

[0063] Figure 8 is a schematic structural diagram of a strip radiating portion of an embodiment of the present invention in some implementation modes;

[0064] Fig. 9 is an exploded schematic diagram of a strip radiating portion in some implementation modes of an embodiment of the present invention;

[0065] Fig.10 is an exploded schematic diagram of the strip radiating portion of the embodiment of the present invention in other implementation modes;

[0066] Fig.11 It is a schematic flow chart of a method for manufacturing a radiation unit according to an embodiment of the present invention.

[0067] Description of reference numerals:

[0068] A-radiation unit;

[0069] 1- Strip-shaped radiation part;

[0070] 11-first connection end; 12-second connection end; 13-bending section; 131-first arrangement state; 132-second arrangement state; 133-first bending section; 134-second bending section; 14-first branch; 15-second branch; 161-third branch; 162-fourth branch; 163-fifth branch;

[0071] 2-Ceramic dielectric part;

[0072] 21-layout surface; 211-first layout surface; 212-second layout surface; 22-connection through hole; 221-first connection through hole; 222-second connection through hole; 23-medium plate; 231-bottom plate; 232-top plate; 233-middle plate; 24-joining surface; 25-top surface;

[0073] 3- Conductive filler;

[0074] 4-Substrate;

[0075] 5- Radiating arm;

[0076] 51-first arm section; 52-second arm section; 521-feeding point; 522-grounding point;

[0077] 6-feeding branch;

[0078] 7- Grounding plate;

[0079] 8-Metal layer. DETAILED DESCRIPTION

[0080] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. It is possible for a person skilled in the art to fully understand the present invention without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0081] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0082] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0083] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0084] Figure 1 It is a structural diagram of an electronic device in the related art. An antenna assembly is arranged inside the electronic device in the figure. The type of the antenna assembly is an IFA antenna (Inverted-F Antenna). The IFA antenna is a resonant antenna. When the antenna length is one-quarter wavelength of the operating frequency band, the current on the antenna can meet the boundary conditions, that is, resonance can be generated and electromagnetic signals can be radiated at the same time. However, this type of antenna evolved from a bent monopole antenna, and because its internal impedance needs to be compensated, a grounding plate 7 connected to the radiation arm 5 is added on this basis. The resonant length of this type of antenna is H, H=L1+L2. Among them, L1 is the distance between the feeding end and the grounding end, and L2 is the distance of the part of L1 extending outward from the feeding end and the grounding end. Therefore, although the IFA antenna is more compact than the traditional monopole antenna, it still needs to ensure the corresponding external dimensions at a certain operating frequency.

[0085] Figure 2 and Figure 3 2 is a schematic diagram of the structure of the antenna assembly and an exploded diagram. The dotted outline in the figure shows the approximate position of the radiation unit A. The radiation unit A is connected between the first arm section 51 and the second arm section 52.

[0086] Figure 4 2 is a schematic diagram of the structure of the radiation unit A. The radiation unit A is a block structure as a whole. The ceramic dielectric part 2 is formed by stacking four dielectric plates 23.

[0087] Figure 5 and Figure 6 2 is an exploded schematic diagram of the radiation unit A of this embodiment in different implementations. In the figure, the outline of the strip radiation portion 1 is shown with a thick solid line, and the strip radiation portion 1 is arranged between each dielectric plate 23. Figure 5 There are four dielectric plates 23 in total. Figure 6 There are three dielectric plates 23 in total.

[0088] Figure 7 It is a schematic diagram of the connection between the strip radiating portion 1 and the radiating arm 5 according to an embodiment of the present invention. Figure 8 It is a schematic structural diagram of the strip radiation portion 1. Figure 8 The middle bending zone 13 has three layers, the bending zone 13 located in the middle layer is shown with a thick solid line, the bending zone 13 located in the bottom layer is shown with a dotted line, and the bending zone 13 located in the top layer is shown with a thin solid line.

[0089] Fig. 9 Yes and Fig.10 Schematic diagrams of explosions of the strip radiation portion 1 in different embodiments. Fig. 9 The bending section 13 located in the middle layer is shown with a thick solid line. Fig.10 The middle bending section 13 includes two layers, the upper layer and the lower layer, and the bending section 13 located at the bottom layer is shown with a thick solid line.

[0090] In some embodiments, Figure 3-5As shown, the radiation unit A of this embodiment includes a ceramic dielectric part 2 and a strip radiation part 1. The ceramic dielectric part 2 is provided with a multi-layer layout surface 21 and a plurality of connecting through holes 22. The multi-layer layout surfaces 21 are arranged at intervals, and two adjacent layout surfaces 21 are connected through the connecting through holes 22. In contrast, the strip radiation part 1 includes a first connection end 11, a plurality of bending sections 13 and a second connection end 12 in the extension direction. The plurality of bending sections 13 are electrically connected in sequence and the first connection end 11 and the second connection end 12 are located at both ends of the strip radiation part 1. Two adjacent bending sections 13 are arranged on different layout surfaces 21 and are electrically connected through the connecting through holes 22. The first connection end 11 and the second connection end 12 are electrically connected to the radiation arm of the antenna assembly through the layout surface 21 or the connecting through holes 22. The plurality of bending sections 13 have a first arrangement state 131 and / or a second arrangement state 132 on the ceramic dielectric part 2.

[0091] Further references Fig. 9 As shown, in the first arrangement state 131 , at least part of the strip-shaped radiating portions 1 pass through each layout surface 21 in sequence.

[0092] Specifically, the strip radiating portion 1 of this embodiment first extends on the layout surface 21 of the bottom layer, then extends on the layout surface 21 of the middle layer, and finally extends on the layout surface 21 of the top layer. Thus, by changing the number of layout surfaces 21 and bending sections 13, the length of the strip radiating portion 1 can be increased or decreased. At the same time, the layout path of the strip radiating portion 1 on the ceramic dielectric portion 2 is simplified.

[0093] Further reference Fig.10 As shown, in the second arrangement state 132 , at least part of the strip-shaped radiating portions 1 extend alternately between the two layout surfaces 21 .

[0094] Specifically, in this embodiment, three bending sections 13 are set on the lower layout surface 21, and two bending sections 13 are set on the upper layout surface 21. The strip radiating portion 1 first extends a distance on the lower layout surface 21, and then extends on the upper layout surface 21 through the connecting through hole 22. And then extends on the lower layout surface 21 again. After two round trips on the above two layout surfaces 21, it is electrically connected to the external device of the radiation unit A. As a result, the strip radiating portion 1 continuously passes through the upper layout surface 21 in the extension direction, so that the electromagnetic signal thereon is also conducted back and forth between the two layout surfaces 21, thereby enhancing the restraining ability of the ceramic dielectric portion 2 on the electromagnetic signal. At the same time, by changing the structure of the bending section 13 of the upper layout surface 21, the use of the lower bending section 13 can be adjusted, thereby directly changing the overall length of the strip radiating portion 1. For example, the upper layout surface 21 is set to Fig.10The bending section 13 indicated by the dotted line is used to separate the bending section 13 located in the middle of the lower layout surface 21 from the other two bending sections 13 , thereby reducing the overall length of the strip radiating portion 1 .

[0095] The strip radiating portion 1 in this embodiment includes a plurality of spaced strips, each of which forms a bending section 13 in this embodiment. The bending sections 13 in the middle are connected end to end in sequence, and the two bending sections 13 at both ends are used for electrical connection between the radiating unit A and external devices. Fig. 9 The layout shown in Fig.10 The arrangement can be as shown in , or a combination of the above two methods.

[0096] Optionally, the number of the layout surfaces 21 in this embodiment may be 4, 5, 6 or more layers. Those skilled in the art may select the layout surface 21 according to the overall length of the strip-shaped radiation portion 1 .

[0097] Optionally, the bending form of the bending section 13 of this embodiment can be a right angle form (such as Fig. 9 The bending direction of the bending section 13 is shown as direction Y in the figure. It can also be an arc, such as a major arc or a minor arc.

[0098] Specifically, the dielectric constant of the ceramic dielectric part 2 can be configured to be 10-35. Those skilled in the art can select it according to the operating frequency of the antenna assembly. For example, when the operating frequency of the antenna assembly is 2.4-2.5 GHz, the dielectric constant is configured to be 20. The material of the ceramic dielectric part 2 includes but is not limited to components such as aluminum oxide, titanium dioxide, glass powder, and adhesive.

[0099] In summary, the radiation unit A of this embodiment uses the ceramic dielectric part 2 to form the layout surface 21 and the connecting through hole 22 to layout the strip radiation part 1 thereon. Therefore, on the one hand, the multi-layer layout surface 21 can provide support for the strip radiation part 1, which is convenient for stacking and arranging the strip radiation part 1 along the height direction of the ceramic dielectric part 2, thereby reducing the space occupied by the strip radiation part 1. On the other hand, each adjacent bending section 13 is arranged on a different layout surface 21 and each layout surface 21 is connected by a connecting through hole 22. When the electromagnetic signal is conducted along the strip radiation part 1, it can always be inside the ceramic dielectric part 2. Thus, the electromagnetic signal on the strip radiation part 1 is constrained by the ceramic dielectric part 2 to prevent the electromagnetic signal from leaking to the outside of the radiation unit A. On the other hand, the bending sections 13 are respectively provided on each layout surface 21 and connected through the connecting through hole 22, so that during the manufacturing process of the radiation unit A, a plurality of independent dielectric plates 23 with layout surfaces 21 can be first manufactured, and then the dielectric plates 23 can be electrically connected accordingly. The radiation unit A can adjust the joining method and quantity of each dielectric plate 23 according to the requirements of the antenna assembly, thereby simplifying the manufacturing process of the radiation unit A and meeting the modular production requirements of the product.

[0100] In some embodiments, Figure 9-10 As shown, the bending section 13 includes a plurality of first branches 14 and a second branch 15. The plurality of first branches 14 are arranged along a first direction (eg Fig. 9 The second branches 15 are arranged at intervals (as shown in the middle direction X), the second branches 15 extend along the first direction, and the two ends of the second branches 15 are connected to the two adjacent first branches 14.

[0101] In this embodiment, the first branch 14 extends along the direction Y, and the second branch 15 extends along the direction X. The ends of the first branch 14 and the second branch 15 are connected. In contrast, the layout surface 21 is a rectangular surface. In this embodiment, the mutual overlap of the first branch 14 and the second branch 15 can facilitate the arrangement of the strip radiating portion 1 on the layout surface 21. For example, by shortening the length of the second branch 15, the number of first branches 14 arranged on the layout surface 21 can be increased, thereby increasing the overall length of the strip radiating portion 1.

[0102] In some embodiments, Figure 4-6 As shown, the ceramic dielectric part 2 includes a plurality of dielectric plates 23, and at least some of the dielectric plates 23 include a layout surface 21 and a joint surface 24. The plurality of dielectric plates 23 are stacked and arranged, and each layout surface 21 is arranged opposite to the joint surface 24, and two dielectric plates 23 are connected through the joint surface 24 and the layout surface 21. In this embodiment, the bending section 13 is clamped between the two dielectric plates 23 through the mutual cooperation of the joint surface 24 and the layout surface 21, so as to constrain the electromagnetic signal in the ceramic dielectric part 2.

[0103] Easy to understand, such as Figure 6 As shown, the two adjacent bending sections 13 and the dielectric plate 23 therebetween in this embodiment can be equivalent to a capacitor. When there are multiple dielectric plates 23, they can be equivalent to multiple capacitors arranged in series. When the electromagnetic signal is transmitted on the strip radiation portion 1, multiple capacitors can constrain the electromagnetic signal therein. To this end, on the one hand, a ceramic dielectric with a larger dielectric constant can be selected to reduce the overall thickness of the ceramic dielectric portion 2 and increase the capacity of the capacitor at the same time. On the other hand, the impedance of the radiation unit A can also be reduced accordingly.

[0104] Easy to understand, such as Figure 6 and Fig.10 As shown, multiple bending sections 13 are arranged only on two dielectric plates 23, but the bending sections 13 thereon are shorter in length and pass through the same dielectric plate 23 multiple times. Therefore, compared with the above-mentioned embodiment, this embodiment can reduce the overall thickness of the radiation unit A. At the same time, one dielectric plate 23 can be equivalent to multiple parallel capacitors at the same time. Therefore, the electromagnetic signal passes through the same dielectric plate 23 multiple times, which can increase the impedance of the radiation unit A, so as to facilitate the impedance matching of the antenna assembly.

[0105] In some embodiments, Figure 4-6 As shown, the plurality of dielectric plates 23 include a bottom plate 231. The connection through holes 22 on the bottom plate 231 include a first connection through hole 221 and a second connection through hole 222, and the first connection through hole 221 and the second connection through hole 222 are respectively located on both sides of the bottom plate 231. The first connection end 11 and the second connection end 12 pass through the first connection through hole 221 and the second connection through hole 222 respectively. The radiation unit A also includes a plurality of connectors, which are arranged in the first connection through hole 221 and the second connection through hole 222, and one end of the connector is electrically connected to the strip radiation portion 1, and the other end is exposed to the bottom of the bottom plate 231.

[0106] In this embodiment, the radiation unit A can be connected to the antenna assembly through the bottom plate 231. Figure 7 As shown in the figure (the ceramic dielectric part 2 is not shown in the figure), the connecting piece is located at the connection position between the first arm section 51 and the second arm section 52 and the strip radiating part 1. One end of the connecting piece extends a small distance from the bottom surface of the bottom plate 231, so that when the ceramic dielectric part 2 is attached to the substrate 4, the connecting piece can abut on the radiating arm 5 at the same time.

[0107] Preferably, if Figure 8As shown, the number of the first connecting through hole 221 and the second connecting through hole 222 is two. The third branch 161 and the fourth branch 162 are arranged on the bottom surface of the dielectric plate 23, and the third branch 161 and the fourth branch 162 pass through the two first connecting through holes 221 and the two second connecting through holes 222 respectively. That is, it is connected to the end of the connector away from the first connecting end 11 and the second connecting end 12. Therefore, when the ceramic dielectric part 2 is installed on the antenna assembly, the radiation unit A can be electrically connected to the radiation arm 5 through the third branch 161 and the fourth branch 162 to increase the contact area between the strip radiation part 1 and the radiation arm 5. The connector can be in the form of a conductive metal rod or a conductive metal cylinder that is inserted into the connecting through hole 22. The middle position is set in the connecting through hole 22 and the two ends extend from the two ends of the connecting through hole 22, which is used to connect with the bending section 13 or the radiation arm 5.

[0108] In some embodiments, Figure 4-6 As shown, the plurality of dielectric plates 23 further include a top plate 232. The top plate 232 includes a joint surface 24 and a top surface 25 that are opposite to each other. At least one middle plate 233 is stacked and arranged between the bottom plate 231 and the top plate 232. The middle plate 233 is provided with a layout surface 21 and a joint surface 24, and the joint surface 24 of the top plate 232 faces the middle plate 233. The top plate 232 can ensure that the electromagnetic signal of the bending section 13 located at the top will not leak to the outside of the radiation unit A. That is, each bending section 13 in this embodiment is clamped between two dielectric plates 23.

[0109] In some embodiments, Figure 8-9 As shown, in the first arrangement state 131, the extension directions of the strip radiating portion 1 on two adjacent layers of layout surfaces 21 are opposite. In the arrangement direction of the multi-layer layout surfaces 21 (direction Z), one end of two bending sections 13 on two adjacent layers of layout surfaces 21 overlap and are electrically connected through the connecting through hole 22.

[0110] Specifically, one end of the bending section 13 located in the middle is connected to the end of the bending section 13 located above, and the other end is connected to the end of the bending section 13 located below. Thus, each bending section 13 can be evenly arranged on the arrangement surface 21. When a person skilled in the art needs to increase the length of the strip radiating portion 1, the number of the bending sections 13 and the dielectric plates 23 can be directly increased. That is, by increasing the stacking height of the ceramic dielectric portion 2, the length of the strip radiating portion 1 can be quickly adjusted.

[0111] In some embodiments, Figure 6 and Fig.10As shown, the multiple bending sections 13 include multiple first bending sections 133 and multiple second bending sections 134, and two adjacent second bending sections 134 are connected by a first bending section 133. The layout surface 21 includes adjacent first layout surfaces 211 and second layout surfaces 212. In contrast, multiple first bending sections 133 are arranged on the first layout surface 211, and multiple second bending sections 134 are arranged on the second layout surface 212. In the arrangement direction of the first layout surface 211 and the second layout surface 212 (direction Z), one end of the adjacent first bending sections 133 and the second bending sections 134 overlap and are electrically connected through the connecting through hole 22.

[0112] Specifically, both ends of the first bending section 133 in this embodiment correspond to and are connected to the ends of the two second bending sections 134. At the same time, the first bending section 133 in this embodiment also includes a fifth branch 163, which is located at the tail of the first bending section 133 and is used to connect to one end of the second bending section 134 outputting the electromagnetic signal. The extension direction of the fifth branch 163 is consistent with that of the second branch 15 (direction X), and the length of the first bending section 133 can be increased.

[0113] In some embodiments, Figure 4-10 As shown, the radiation unit A includes a conductive filler 3 , which is filled in the connecting through hole 22 , and each bending section 13 is electrically connected via the conductive filler 3 .

[0114] Specifically, the conductive filler 3 is a filler containing nickel powder, graphene or metal oxide. Thus, electrical connection between the bending sections 13 can be achieved through the conductive filler 3. In contrast, an annular conductive pattern can be provided near the connecting through hole 22 of the joint surface 24, and the annular conductive pattern is used to electrically connect to the conductive filler 3 and abut against the bending section 13 on the opposite side.

[0115] In an optional implementation, the radiation unit A in the above embodiment can be applied to an antenna assembly. The antenna assembly also includes a substrate 4 and a radiation arm 5. The radiation arm 5 is arranged on the substrate 4 and includes a first arm section 51 and a second arm section 52, the first arm section 51 and the second arm section 52 are arranged at intervals, and the second arm section 53 includes a feeding point 531 and a grounding point 532. The above-mentioned radiation unit A includes a ceramic dielectric part 2 and a strip radiation part 1. The ceramic dielectric part 2 is provided with a plurality of layout surfaces 21 and a plurality of connecting through holes 22. The plurality of layout surfaces 21 are arranged at intervals, and two adjacent layout surfaces 21 are connected through the connecting through holes 22. The strip radiation part 1 includes a first connection end 11, a plurality of bending sections 13 and a second connection end 12 in the extension direction. The plurality of bending sections 13 are electrically connected in sequence and the first connection end 11 and the second connection end 12 are located at both ends of the strip radiation part 1. Two adjacent bending sections 13 are arranged on different layout surfaces 21 and are electrically connected through the connecting through holes 22. The first connection end 11 and the second connection end 12 are electrically connected to the first arm section 51 and the second arm section 52 respectively through the layout surface 21 or the connecting through holes 22. The plurality of bending sections 13 have a first arrangement state 131 and / or a second arrangement state 132 on the ceramic dielectric part 2. In the first arrangement state 131, at least part of the strip radiation part 1 passes through each layout surface 21 in sequence. In the second arrangement state 132 , at least part of the strip-shaped radiating portions 1 extend alternately between the two layout surfaces 21 .

[0116] Optionally, the antenna in this embodiment includes but is not limited to a PIFA antenna or an IFA antenna, etc. The radiation unit A in this embodiment is arranged in the middle area of ​​the radiation arm 5, which can reduce the volume occupied by the antenna component.

[0117] Those skilled in the art can adjust the operating frequency of the antenna assembly by trimming the length of the first arm section 51 . Figure 2 The position indicated by the dotted line in FIG. 5 is the state before the first arm section 51 is trimmed. Figure 1 and Figure 2 By comparison, it can be seen that after the radiation unit A is installed in this embodiment, the overall length of the radiation arm 5 is shortened, so that the grounding plate 7 can be arranged on a larger area.

[0118] Easy to understand, through Figure 2 and Figure 4 As can be seen from the comparison in , the width of the strip radiating portion 1 is much smaller than the width of the radiating arm 5. At the same time, the strip radiating portion 1 is arranged in the ceramic dielectric portion 2, so that the impedance of the radiating unit A is much greater than other positions of the radiating arm 5. To this end, in this embodiment, the radiating unit A is connected between the first arm section 51 and the second arm section 52, so that the electromagnetic signal on the radiating arm 5 can flow through the radiating unit A. In this way, when the radiating unit A is arranged at the end of the radiating arm 5, the electromagnetic signal cannot be transmitted to the radiating unit A. Thus, the actual working length of the radiating arm 5 is reduced.

[0119] In summary, the antenna assembly of this embodiment uses the ceramic dielectric part 2 on the radiation unit A to form a layout surface 21 and a connecting through hole 22 to layout the strip radiation part 1 thereon. Therefore, on the one hand, the multi-layer layout surface 21 can provide support for the strip radiation part 1, which is convenient for stacking and arranging the strip radiation part 1 along the height direction of the ceramic dielectric part 2, thereby reducing the space occupied by the strip radiation part 1. On the other hand, each adjacent bending section 13 is arranged on a different layout surface 21 and each layout surface 21 is connected by a connecting through hole 22. When the electromagnetic signal is conducted along the strip radiation part 1, it can always be inside the ceramic dielectric part 2. Thus, the electromagnetic signal on the strip radiation part 1 is constrained by the ceramic dielectric part 2 to prevent the electromagnetic signal from leaking to the outside of the radiation unit A. On the other hand, a bending section 13 is provided on each layout surface 21 and connected through a connecting through hole 22, so that during the manufacturing process of the radiation unit A, a plurality of independent dielectric plates 23 with layout surfaces 21 can be first manufactured, and then the dielectric plates 23 can be electrically connected accordingly. The radiation unit A can adjust the joining method and quantity of each dielectric plate 23 according to the requirements of the antenna component. Thereby, the manufacturing process of the radiation unit A is simplified and the modular production requirements of the product are met. On the other hand, the radiation unit A is set in the middle position of the radiation arm 5 of the antenna component. The technicians in this field can adjust the operating frequency of the antenna component by changing the length of the first arm section 51, which greatly shortens the trial production cycle of the antenna component.

[0120] In some embodiments, Figure 2-6 As shown, the ceramic dielectric part 2 includes a plurality of dielectric plates 23, and at least part of the dielectric plates 23 includes a layout surface 21 and a joint surface 24. The plurality of dielectric plates 23 are stacked and arranged, and each layout surface 21 is arranged opposite to the joint surface 24, and two dielectric plates 23 are connected through the joint surface 24 and the layout surface 21. At the same time, the plurality of dielectric plates 23 include a bottom plate 231. The connecting through holes 22 on the bottom plate 231 include a first connecting through hole 221 and a second connecting through hole 222, and the first connecting through hole 221 and the second connecting through hole 222 are respectively located on both sides of the bottom plate 231. The first connecting end 11 and the second connecting end 12 pass through the first connecting through hole 221 and the second connecting through hole 222, respectively. The radiation unit A also includes a plurality of connectors, which are arranged in the first connecting through hole 221 and the second connecting through hole 222 and are electrically connected to the strip radiation part 1. The radiation unit A is disposed between the first arm section 51 and the second arm section 52, and the connectors in the first connection through hole 221 and the second connection through hole 222 are respectively in contact with the first arm section 51 and the second arm section 52. In this embodiment, the radiation unit A can be connected to the antenna assembly through the bottom plate 231, thereby simplifying the assembly of the antenna assembly.

[0121] In some embodiments, Figure 2-3 As shown, the antenna assembly includes a feeding branch 6 and a grounding plate 7. The grounding plate 7 is arranged on one side of the substrate 4 and includes a clearance area 71. The radiation arm 5 and the radiation unit A are arranged in the clearance area 71, the grounding point 522 is located at one end of the second arm section 52 away from the radiation unit A and connected to the grounding plate 7, and the feeding point 521 is located at one end of the second arm section 52 away from the grounding point 522 and connected to the feeding branch 6. In this embodiment, the feeding branch 6 can be connected to the coaxial line, or the feeding branch 6 can be directly connected to the electromagnetic wave generating circuit to feed the electromagnetic signal to the antenna assembly.

[0122] Alternatively, if Figure 3 As shown, a metal layer 8 is also provided on the side of the substrate 4 away from the ground plate 7. The metal layer 8 may be a copper layer. The metal layer 8 is provided at a position that is staggered with the radiation arm 5 and the radiation unit A (eg Figure 3 The metal layer 8 can be used for electromagnetic isolation to prevent the antenna assembly from interfering with other components of the electronic device.

[0123] In an optional implementation, the antenna assembly in the above embodiment may be applied to electronic devices, including but not limited to electronic watches, mobile phones, or laptop computers.

[0124] The electronic device of this embodiment utilizes the ceramic dielectric part 2 of the radiation unit A to form a layout surface 21 and a connecting through hole 22 to layout the strip radiation part 1 thereon. Therefore, on the one hand, the multi-layer layout surface 21 can provide support for the strip radiation part 1, which is convenient for stacking and arranging the strip radiation part 1 along the height direction of the ceramic dielectric part 2, thereby reducing the space occupied by the strip radiation part 1. The overall thickness of the electronic device is reduced. On the other hand, each adjacent bending section 13 is arranged on a different layout surface 21 and each layout surface 21 is connected by a connecting through hole 22. When the electromagnetic signal is conducted along the strip radiation part 1, it can always be inside the ceramic dielectric part 2. Thus, the electromagnetic signal on the strip radiation part 1 is constrained by the ceramic dielectric part 2 to prevent the electromagnetic signal from leaking to the outside of the radiation unit A. On the other hand, a bending section 13 is provided on each layout surface 21 and connected through a connecting through hole 22, so that during the manufacturing process of the radiation unit A, a plurality of independent dielectric plates 23 with layout surfaces 21 can be first manufactured, and then the dielectric plates 23 can be electrically connected accordingly. The radiation unit A can adjust the joining method and quantity of each dielectric plate 23 according to the requirements of the antenna component. Thereby, the manufacturing process of the radiation unit A is simplified and the modular production requirements of the product are met. On the other hand, the radiation unit A is set in the middle position of the radiation arm 5 of the antenna component. The technicians in this field can adjust the operating frequency of the antenna component by changing the length of the first arm section 51, which greatly shortens the trial production cycle of the antenna component.

[0125] Fig.11 FIG. 1 is a flow chart of a method for manufacturing a radiation unit A. Figure 1-11 As shown, the manufacturing method of the radiation unit A in this embodiment includes the following steps.

[0126] S100 : dividing the ceramic roll into a plurality of dielectric plates 23 .

[0127] The ceramic material roll is a roll made of glass powder, alumina and other materials. It can be cut into a dielectric plate 23 of a predetermined size by a cutting device. The size of the dielectric plate 23 can be adjusted according to the size of the radiation unit A.

[0128] S200 : Punching the dielectric plate 23 to form the connecting through holes 22 .

[0129] The connecting through holes 22 can be processed on the dielectric plate 23 by a punch or a laser head. In order to improve the processing efficiency and ensure the position accuracy of the connecting through holes 22 of multiple dielectric plates 23, multiple dielectric plates 23 can be stacked and processed together by a laser head.

[0130] S300 : Filling the connecting through hole 22 with a conductive filler 3 .

[0131] The conductive filler 3 may be filled into the connection through-holes 22 by screen printing or grouting, so that the conductive filler 3 in each connection through-hole 22 is evenly distributed.

[0132] S400 : Printing the bending area 13 on the dielectric plate 23 .

[0133] In this embodiment, the bending sections 13 of the dielectric plates 23 are electrically connected through the conductive filler 3 to form the strip radiating portion 1. The strip radiating portion 1 is printed on the dielectric plate 23 by screen printing, and the strip radiating portion 1 is connected to the conductive filler 3.

[0134] S500: stacking a plurality of dielectric plates 23 in a predetermined order and electrically connecting them accordingly.

[0135] This step can ensure the electrical performance between the dielectric plates 23 and avoid the misalignment of the circuits at different layers.

[0136] S600: Pressing the stacked plurality of dielectric plates 23 together.

[0137] This step allows the dielectric plates 23 to be stably attached together. The pressed dielectric plates 23 may be further cut to ensure that the edges of the ceramic dielectric portion 2 are neat. At the same time, after sintering, the hardness of the ceramic dielectric portion 2 will increase, which will also make the ceramic dielectric portion 2 difficult to cut.

[0138] S700: Sintering the plurality of pressed dielectric plates 23.

[0139] This step can harden the material of the ceramic dielectric part 2 and solidify the conductive filler 3 in the connecting through hole 22 at the same time.

[0140] Furthermore, the sintered radiation unit A is tested to ensure the stability of the electrical performance of the manufactured radiation unit A.

[0141] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A radiation unit, characterized in that: The radiation unit comprises: The ceramic dielectric part (2) is provided with a plurality of layout surfaces (21) and a plurality of connecting through holes (22), the plurality of layout surfaces (21) are arranged at intervals, and two adjacent layers of the layout surfaces (21) are connected via the connecting through holes (22); and A strip radiating portion (1), wherein the strip radiating portion (1) comprises a first connection end (11), a plurality of bending sections (13) and a second connection end (12) in the extension direction, the plurality of bending sections (13) are electrically connected in sequence and the first connection end (11) and the second connection end (12) are located at two ends of the strip radiating portion (1), and two adjacent bending sections (13) are arranged on different arrangement surfaces (21) and are electrically connected via the connecting through hole (22); The plurality of bending sections (13) have a first arrangement state (131) and / or a second arrangement state (132) on the ceramic dielectric portion (2); in the first arrangement state (131), at least a portion of the strip-shaped radiation portion (1) passes through each of the layout surfaces (21) in sequence; In the second arrangement state (132), at least part of the strip-shaped radiation portion (1) extends alternately between two layers of the layout surfaces (21); The ceramic dielectric part (2) includes a plurality of dielectric plates (23), and some of the dielectric plates (23) include the layout surface (21) and the bonding surface (24); A plurality of the dielectric plates (23) are stacked and arranged, and each of the layout surfaces (21) is arranged opposite to the joint surface (24), and two dielectric plates (23) are connected via the joint surface (24) and the layout surface (21); The plurality of dielectric plates (23) include: A bottom plate (231), wherein the connecting through hole (22) on the bottom plate (231) comprises a first connecting through hole (221) and a second connecting through hole (222), wherein the first connecting through hole (221) and the second connecting through hole (222) are respectively located on two sides of the bottom plate (231), and a third branch node (161) and a fourth branch node (162) are arranged on the bottom surface of the bottom plate (231), and the third branch node (161) and the fourth branch node (162) pass through the first connecting through hole (221) and the second connecting through hole (222) respectively; The first connection end (11) and the second connection end (12) are arranged on the arrangement surface (21) and pass through the first connection through hole (221) and the second connection through hole (222) respectively; The radiation unit further comprises a plurality of connectors, some of which are arranged in the first connecting through hole (221) and the second connecting through hole (222), the connector located in the first connecting through hole (221) is electrically connected between the first connecting end (11) and the third branch (161), and the connector located in the second connecting through hole (222) is electrically connected between the second connecting end (12) and the fourth branch (162); The radiation unit is configured to be arranged between a first arm section (51) and a second arm section (52) of the antenna assembly, and the third branch section (161) and the fourth branch section (162) are respectively abutted against the first arm section (51) and the second arm section (52).

2. The radiation unit according to claim 1, characterized in that: The bending section (13) comprises: A plurality of first branches (14) and a second branch (15), wherein the plurality of first branches (14) are arranged at intervals along a first direction, and the second branch (15) extends along the first direction, and two ends of the second branch (15) are connected to two adjacent first branches (14).

3. The radiation unit according to claim 1, characterized in that: One end of the connecting member disposed in the first connecting through hole (221) and the second connecting through hole (222) is electrically connected to the strip-shaped radiation portion (1), and the other end is exposed at the bottom of the bottom plate (231).

4. The radiation unit according to claim 3, characterized in that: The plurality of dielectric plates (23) further include: A top plate (232), the top plate (232) comprising the joint surface (24) and a top surface (25) facing away from each other; and At least one intermediate plate (233) is stacked and arranged between the bottom plate (231) and the top plate (232); the intermediate plate (233) is provided with the layout surface (21) and the joint surface (24); the joint surface (24) of the top plate (232) faces the intermediate plate (233).

5. The radiation unit according to claim 1, characterized in that: In the first arrangement state (131), the extension directions of the strip-shaped radiation portion (1) on the two adjacent layout surfaces (21) are opposite; In the arrangement direction of the plurality of layout surfaces (21), one ends of the two bending sections (13) on two adjacent layout surfaces (21) overlap and are electrically connected via the connecting through hole (22).

6. The radiation unit according to claim 1, characterized in that: The plurality of bending sections (13) include a plurality of first bending sections (133) and a plurality of second bending sections (134) at intervals, and two adjacent second bending sections (134) are connected via one of the first bending sections (133); The layout surface (21) comprises a first layout surface (211) and a second layout surface (212) which are adjacent to each other; A plurality of sections of the first bending sections (133) are arranged on the first layout surface (211), and a plurality of sections of the second bending sections (134) are arranged on the second layout surface (212). In the arrangement direction of the first layout surface (211) and the second layout surface (212), one end of adjacent first bending sections (133) and second bending sections (134) overlap and are electrically connected through the connecting through hole (22).

7. The radiation unit according to claim 1, characterized in that: The radiation unit comprises: A conductive filler (3), the conductive filler (3) is filled in the connecting through hole (22), and each section of the bending section (13) is electrically connected through the conductive filler (3).

8. An antenna assembly, characterized in that: The antenna assembly comprises: base(4); A radiation arm (5), arranged on the substrate (4) and comprising a first arm section (51) and a second arm section (52), wherein the first arm section (51) and the second arm section (52) are arranged at an interval, and the second arm section (53) comprises a feeding point (531) and a grounding point (532); and A radiation unit, comprising a ceramic dielectric part (2) and a strip radiation part (1), wherein the ceramic dielectric part (2) is provided with a plurality of layout surfaces (21) and a plurality of connection through holes (22), wherein the plurality of layout surfaces (21) are arranged at intervals, and two adjacent layers of the layout surfaces (21) are connected via the connection through holes (22), wherein the extension direction of the strip radiation part (1) comprises a first connection end (11), a plurality of bending sections (13) and a second connection end (12), wherein the plurality of bending sections (13) are electrically connected in sequence and the first connection end (11) and the second connection end (12) are located at two ends of the strip radiation part (1), and two adjacent bending sections (13) are arranged on different layout surfaces (21) and are electrically connected via the connection through holes (22); The plurality of bending sections (13) have a first arrangement state (131) and / or a second arrangement state (132) on the ceramic dielectric portion (2); in the first arrangement state (131), at least a portion of the strip-shaped radiation portion (1) passes through each of the layout surfaces (21) in sequence; In the second arrangement state (132), at least part of the strip-shaped radiation portion (1) extends alternately between two layers of the layout surfaces (21); The ceramic dielectric part (2) comprises a plurality of dielectric plates (23), and at least part of the dielectric plates (23) comprises the layout surface (21) and the bonding surface (24); A plurality of the dielectric plates (23) are stacked and arranged, and each of the layout surfaces (21) is arranged opposite to the joint surface (24), and two dielectric plates (23) are connected via the joint surface (24) and the layout surface (21); The plurality of dielectric plates (23) include: A bottom plate (231), wherein the connecting through hole (22) on the bottom plate (231) comprises a first connecting through hole (221) and a second connecting through hole (222), wherein the first connecting through hole (221) and the second connecting through hole (222) are respectively located on two sides of the bottom plate (231), and a third branch node (161) and a fourth branch node (162) are arranged on the bottom surface of the bottom plate (231), and the third branch node (161) and the fourth branch node (162) pass through the first connecting through hole (221) and the second connecting through hole (222) respectively; The first connection end (11) and the second connection end (12) are arranged on the arrangement surface (21) and pass through the first connection through hole (221) and the second connection through hole (222) respectively; The radiation unit further comprises a plurality of connectors, some of which are arranged in the first connecting through hole (221) and the second connecting through hole (222), the connector located in the first connecting through hole (221) is electrically connected between the first connecting end (11) and the third branch (161), and the connector located in the second connecting through hole (222) is electrically connected between the second connecting end (12) and the fourth branch (162); The radiation unit is arranged between the first arm section (51) and the second arm section (52), and the third branch section (161) and the fourth branch section (162) are respectively in contact with the first arm section (51) and the second arm section (52).

9. The antenna assembly according to claim 8, characterized in that: The antenna assembly comprises: Feed branch (6); A grounding sheet (7) arranged on one side of the substrate (4) and comprising a clearance area (71); The radiation arm (5) and the radiation unit are arranged in the clearance area (71); the grounding point (522) is located at an end of the second arm section (52) away from the radiation unit and is connected to the grounding plate (7); and the feeding point (521) is located at an end of the second arm section (52) away from the grounding point (522) and is connected to the feeding branch (6).

10. An electronic device, characterized in that: The electronic device comprises: An antenna assembly according to any one of claims 8-9.

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