An antenna assembly

Abstract

This specification provides an antenna assembly including a first radiating stub, a signal feed point, and a ground reference point. The first radiating stub connects both the signal feed point and the ground reference point, and a first gap of a predetermined width exists between the first radiating stub and the ground reference point. By reducing the gap between the first radiating stub and the ground reference point, the coupling of the antenna assembly is increased, thereby increasing the bandwidth of the passive return loss waveform and optimizing the passive return loss of the antenna assembly.

Description

Technical Field

[0001] This specification relates to the field of antennas, and more particularly to an antenna assembly. Background Technology

[0002] With the development of antenna technology and the increasing prevalence of 5G, mobile terminals such as smartphones and tablets are rapidly upgrading from 4G to 5G. To meet the demands of 5G's high speed, low latency, and high-capacity connectivity, terminals need to support more effective frequency bands and be equipped with more antennas. However, users' pursuit of terminal aesthetics limits the wiring space available for antenna design.

[0003] In existing technologies, the G-Pattern antenna design is typically employed. This design includes a long radiating stub and a short radiating stub, used to excite the low-frequency resonant mode and the high-frequency resonant mode, respectively. This design effectively extends the current path through meanders or fractal structures, thereby enabling multi-band resonance within a compact space without the need for separate antenna design for each frequency band.

[0004] However, current G-Pattern antennas have insufficient return loss bandwidth in passive mode, meaning that the frequency range within the operating band that maintains good matching performance is relatively small, making it difficult to meet users' daily communication needs. Therefore, this specification provides an antenna assembly. Utility Model Content

[0005] This specification provides an antenna assembly to partially solve the aforementioned problems existing in the prior art.

[0006] The following technical solution is adopted in this specification:

[0007] An antenna assembly includes a first radiating stub 4, a signal feed point 2, and a ground reference point 3, characterized in that the first radiating stub 4 connects the signal feed point 2 and the ground reference point 3, and a first gap 6 with a preset width and a preset length exists between the first radiating stub 4 and the ground reference point 3.

[0008] Optionally, the preset width ranges from 0.3 mm to 0.5 mm, and the preset length ranges from 3 mm to 5 mm.

[0009] Optionally, the preset width includes 0.4 mm.

[0010] Optionally, the first radiating stub 4 covers the wiring area of ​​the antenna assembly, excluding the wiring area of ​​the first slot 6.

[0011] Optionally, the first gap 6 is the gap between the end of the first radiating branch 4 and the grounding reference point 3.

[0012] Optionally, the grounding reference point 3 is connected to the third radiating branch 7, and the first gap 6 is the gap between the end of the third radiating branch 7 and the end of the first radiating branch 4.

[0013] Optionally, the antenna assembly further includes a second radiating stub 5, wherein the first radiating stub 4 and the second radiating stub 5 are located at both ends of the trace area of ​​the antenna assembly, the first radiating stub 4 is on the same side as the ground reference point 3, and the second radiating stub 5 is on the same side as the signal feed point 2.

[0014] Optionally, the first radiating stub 4 is used to transmit or receive GPS signals and 5G wireless network signals, and the second radiating stub 5 is used to transmit or receive 2.4G wireless network signals; the length of the first radiating stub 4 ranges from 8.9 to 12.9 mm and the width ranges from 6.6 to 10.6 mm, and the length of the second radiating stub 5 ranges from 14 to 16 mm and the width ranges from 6.6 to 10.6 mm.

[0015] Optionally, the first radiating branch 4 and the second radiating branch 5 form a G-shaped structure.

[0016] Optionally, the first radiating branch 4 is a gold-plated lead.

[0017] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects:

[0018] This specification provides an antenna assembly comprising a first radiating stub 4, a signal feed point 2, and a ground reference point 3. The first radiating stub 4 is connected to both the signal feed point 2 and the ground reference point 3. A first gap 6 of a predetermined width exists between the first radiating stub 4 and the ground reference point 3.

[0019] In the aforementioned antenna assembly, by reducing the gap between the first radiating stub and the ground reference point, the coupling degree of the antenna assembly is increased, thereby increasing the bandwidth of the passive return loss waveform and optimizing the passive return loss of the antenna assembly. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of an antenna assembly provided in this specification;

[0022] Figure 2 This is a schematic diagram of a passive return loss waveform provided in this specification;

[0023] Figure 3 This is a schematic diagram of an antenna assembly provided in this specification;

[0024] Figure 4 This is a schematic diagram of an antenna assembly provided in this specification;

[0025] Figure 5 This is a schematic diagram of an antenna assembly provided in this specification;

[0026] Figure 6 This is a schematic diagram of an antenna assembly provided in this specification;

[0027] Figure 7 This is a schematic diagram of an antenna assembly provided in this specification;

[0028] Figure 8 This is a schematic diagram of an antenna assembly provided in this specification;

[0029] Figure 9 This is a schematic diagram of an antenna assembly provided in this specification;

[0030] Figure 10 This is a schematic diagram of an antenna assembly provided in this specification;

[0031] Figure 11 This is a schematic diagram of an optimized passive return loss provided in this specification. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] With the development of antenna technology and the increasing popularity of 5G, mobile terminals such as smartphones and tablets are accelerating their upgrade from 4G to 5G. To meet the demands of 5G's high speed, low latency, and high-capacity connectivity, terminals need to support more effective frequency bands and be equipped with more antennas. However, to meet users' demands for higher screen-to-body ratios, the space available for antenna components in current 5G-enabled mobile terminals is often limited, restricting the wiring space available for antenna design.

[0034] Currently, in order to solve problems such as multi-band coverage, multi-antenna layout, and signal interference within limited physical space, the G-pattern antenna design is typically adopted, such as... Figure 1 As shown, Figure 1This is a schematic diagram of an antenna assembly provided in this specification. The shaded area filled with diagonal lines represents the radiator 1 of the antenna assembly. The black rectangles represent the signal feed point 2 and the ground reference point 3, respectively. The area within the dashed box represents the wiring area of ​​the antenna assembly. The length of the signal feed point 2 and the ground reference point 3 is typically 2.6 ± 0.3 mm, and the width is typically 1.30 ± 0.3 mm. "± 0.3" indicates an error due to manufacturing processes, etc. To ensure the transmission efficiency and effect of the antenna assembly, the error should not exceed 0.3 mm. It should be noted that this error is generally set according to actual needs, and this specification does not impose any limitations on it. The above is merely one embodiment provided in this specification. The meanings of "± 0.3" and "± 0.15" mentioned later are the same as here, and therefore will not be repeated here.

[0035] The radiator 1 is used to transmit current, and the radiator 1 contains two radiating branches, namely Figure 1 The solid-line rectangles enclose the first radiating stub 4 and the second radiating stub 5, respectively. The first radiating stub 4 is used to transmit or receive Global Positioning System (GPS) signals and 5G wireless network signals (Wi-Fi). The second radiating stub 5 is used to transmit or receive Wi-Fi 2.4. The first and second radiating stubs 4 and 5 form a G-type structure. By effectively extending the current path through a tortuous or fractal structure, multi-band resonance can be achieved in a compact space, eliminating the need for separate antenna design for each frequency band.

[0036] However, as Figure 2 As shown, Figure 2 This is a schematic diagram of a passive return loss waveform provided in this specification. The vertical axis of the waveform represents the return loss value in decibels (dB), and the horizontal axis represents the frequency. The waveform contains five points, each representing the return loss value of the antenna component at that frequency. According to... Figure 2 It is known that current G-Pattern antennas have insufficient return loss bandwidth in passive mode, meaning that the frequency range within the operating band that maintains good matching performance is relatively small, making it difficult to meet users' daily communication needs. Based on this, this specification provides an antenna assembly for a mobile terminal.

[0037] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings. Figure 3 As shown, Figure 3This is a schematic diagram of an antenna assembly provided in this specification. The antenna assembly includes a first radiating stub 4, a signal feed point 2, and a ground reference point 3. The first radiating stub 4 connects the signal feed point 2 and the ground reference point 3, and a first gap 6 of a predetermined width exists between the first radiating stub 4 and the ground reference point 3. By reducing the gap width between the first radiating stub 4 and the ground reference point 3, the coupling degree of the antenna assembly is increased, thereby increasing the bandwidth of the passive return loss waveform and optimizing the passive return loss of the antenna assembly.

[0038] It should be noted that in one or more embodiments of this specification, the specific value of the preset width is not limited; it can be set according to actual needs. The end slot is essentially a discontinuous region in the antenna structure. When a high-frequency current passes through the first slot 6, an electromagnetic field can be generated at the edge of the slot, forming a coupling region. The coupling degree of this coupling region represents the energy exchange capability between the antenna and the surrounding magnetic field. The smaller the preset width of the first slot 6, the higher the intensity of the edge field. Generally, the preset width of the first slot 6 is between 0.3 mm and 0.5 mm, but considering the manufacturing process and installation of the antenna assembly, the preset width can also be 0.4 mm. In low-cost production scenarios, when production errors are large, the preset width can also be 0.5 mm, set according to requirements and the precision of the manufacturing process.

[0039] Furthermore, the preset length of the first gap 6 also affects the passive return loss of the antenna. Generally, the longer the preset length, the larger the radiation area of ​​the antenna. However, due to the limitations of the wiring area, the preset length of the first gap 6 is between 3 mm and 5 mm, which can be set according to the actual production process requirements and the size of the antenna wiring area. Among them, the preset length of the first gap 6 between the first radiating branch 4 and the grounding reference point 3 includes 4 mm.

[0040] To better optimize the passive return loss of the antenna assembly, the first gap 6 can be the gap between the end of the first radiating stub 4 and the ground reference point 3. It should be noted that, in one or more embodiments of this specification, the determination of the first gap 6 is not limited, except... Figure 3 The first gap 6 described herein is the gap between the end of the first radiating branch 4 and the grounding reference point 3. Alternatively, it can be as follows: Figure 4 As shown, Figure 4 This is a schematic diagram of an antenna assembly provided in this specification. The gap indicated by the arrow is the first gap 6.

[0041] Furthermore, the radiation area of ​​the antenna assembly can be increased by covering the wiring area of ​​the antenna assembly, excluding the first slot 6, thereby reducing the return loss of the antenna and optimizing the passive return loss of the antenna assembly. For example... Figure 5 As shown, Figure 5 This is a schematic diagram of an antenna assembly provided in this specification, wherein, when the first gap 6 is of a preset width, the wiring area of ​​the antenna assembly is covered by the first radiating stub 4.

[0042] Of course, the bending method of the first radiating branch 4 can also be changed to further increase the radiating area of ​​the first radiating branch. That is, as follows... Figure 6 As shown, Figure 6 This is a schematic diagram of an antenna assembly provided in this specification. The radiating area of ​​the first radiating stub 4 is increased by changing the bending method within the wiring area.

[0043] As another embodiment, to ensure the transmission efficiency of the antenna, the first radiating stub 4 and the second radiating stub 5 generally need to satisfy one-quarter or one-half of the electrical signal wavelength. Therefore, to control the length of the first radiating stub 4, a third radiating stub 7 connected to the grounding reference point 3 can also be set near the grounding reference point 3, such as... Figure 7 As shown, Figure 7 This is a schematic diagram of an antenna assembly provided in this specification, wherein a third radiating branch 7 connected to the ground reference point 3 exists between the ground reference point 3 and the end of the first radiating branch 4, and the gap between the end of the first radiating branch 4 and the edge of the third radiating branch 7 of the ground reference point 3 is the first gap 6.

[0044] Furthermore, in order to increase the preset length of the first gap 6, this specification also provides an embodiment, such as... Figure 8 As shown, Figure 8 This is a schematic diagram of an antenna assembly provided in this specification, in which the length of the first slot 6 is increased by extending the length of the end of the third radiating stub 7 of the ground reference point 3.

[0045] In the embodiments of this specification, due to the limitations of the antenna assembly's wiring area, in order to further improve the antenna's transmission efficiency and transmission effect, the first radiating stub 4 and the second radiating stub 5 are located on both sides of the antenna assembly's wiring area, respectively. The first radiating stub 4 is on the same side as the ground reference point 3, and the second radiating stub 5 is on the same side as the signal feed point 2.

[0046] In the embodiments described in this specification, the length of the first radiating stub 4 ranges from 8.9 to 12.9 mm, and the width ranges from 6.6 to 10.6 mm; the length of the second radiating stub 5 ranges from 14 to 16 mm, and the width ranges from 6.6 to 10.6 mm. Of course, the specific dimensions of the first and second radiating stubs can be set as needed, for example, determined according to manufacturing process limitations or the requirements of the equipment using the antenna assembly.

[0047] In one embodiment of this specification, the length of the first radiating stub 4 may be 10.89 mm and the width may be 8.63 mm, and the length of the second radiating stub 5 may be 16.01 mm and the width may be 8.63 mm. Furthermore, since there may be some error during the manufacturing process of the antenna assembly, but the error generally does not exceed 0.15 mm, the first radiating stub 4 is 10.89 ± 0.15 mm long and 8.63 ± 0.15 mm wide, and the second radiating stub 5 is 16.01 ± 0.15 mm long and 8.63 ± 0.15 mm wide. Figure 9 As shown, Figure 9 This is a schematic diagram of an antenna assembly provided in this specification.

[0048] As another optional embodiment, the wiring area may also include at least two antenna assemblies, such as... Figure 10 As shown, Figure 10 This is a schematic diagram of an antenna assembly provided in this specification. The wiring area includes two signal feed points 2 and two ground reference points 3. The antenna assembly on the left is used for receiving or transmitting signals in the ultra-high frequency band. The antenna assembly on the right is a G Pattern antenna. The stub on the same side as the signal feed point 2 in the G Pattern antenna is the second radiating stub 5, and the stub on the same side as the ground reference point 3 is the first radiating stub 4. Figure 10 The total length of the routing area is 38.17±0.15 mm, and the width is 11.49±0.15 mm.

[0049] Optionally, the first radiating branch 4 and the second radiating branch 5 are gold-plated leads to further improve the impedance of current transmission and optimize passive return loss.

[0050] like Figure 11 As shown, Figure 11 This is a schematic diagram of an optimized passive return loss waveform provided in this specification. Figure 11 The schematic diagram of the passive return loss waveform is shown below. Figure 9 The waveform obtained from the antenna assembly test shown is comparable to... Figure 2 The waveform in the image, by narrowing the end gap and increasing the radiation area of ​​the first radiating stub, can both increase the bandwidth and the depth of the passive return loss waveform. From the perspective of return loss rate, this reduces the loss; from the perspective of echo frequency, it enables the transmission and reception of higher frequency electromagnetic waves, thus increasing bandwidth.

[0051] It should be noted that, compared to the current G Pattern antenna, the passive return loss can also be optimized simply by increasing the radiating area of ​​the first radiating stub 4.

[0052] In one or more embodiments of this specification, the antenna assembly is not limited to any particular device it is used in; it can be a mobile terminal or other electronic devices with communication needs, such as autonomous driving devices.

[0053] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification in any way. Although this specification has disclosed preferred embodiments as described above, it is not intended to limit this specification. Any person skilled in the art can make some modifications or alterations to the disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this specification. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this specification without departing from the content of the technical solution of this specification shall still fall within the scope of the technical solution of this specification.

Claims

1. An antenna assembly comprising a first radiating stub (4), a signal feed point (2), and a ground reference point (3), characterized in that, The first radiating stub (4) connects the signal feed point (2) and the ground reference point (3), and there is a first gap (6) with a preset width and a preset length between the first radiating stub (4) and the ground reference point (3).

2. The antenna assembly as claimed in claim 1, characterized in that, The preset width range is 0.3 mm to 0.5 mm, and the preset length range is 3 mm to 5 mm.

3. The antenna assembly as described in claim 2, characterized in that, The preset width includes 0.4 mm.

4. The antenna assembly as described in any one of claims 1 to 3, characterized in that, The first radiating stub (4) covers the wiring area of ​​the antenna assembly, excluding the wiring area of ​​the first slot (6).

5. The antenna assembly as described in claim 4, characterized in that, The first gap (6) is the gap between the end of the first radiating branch (4) and the grounding reference point (3).

6. The antenna assembly as claimed in claim 1, characterized in that, The grounding reference point (3) is connected to the third radiating branch (7), and the first gap (6) is the gap between the end of the third radiating branch (7) and the end of the first radiating branch (4).

7. The antenna assembly as claimed in claim 1, characterized in that, The antenna assembly further includes a second radiating stub (5). The first radiating stub (4) and the second radiating stub (5) are located at both ends of the wiring area of ​​the antenna assembly, respectively. The first radiating stub (4) is on the same side as the ground reference point (3), and the second radiating stub (5) is on the same side as the signal feed point (2).

8. The antenna assembly as claimed in claim 7, characterized in that, The first radiating branch (4) is used to send or receive GPS signals and 5G wireless network signals, and the second radiating branch (5) is used to send or receive 2.4G wireless network signals; the length of the first radiating branch (4) ranges from 8.9 to 12.9 mm and the width ranges from 6.6 to 10.6 mm, and the length of the second radiating branch (5) ranges from 14 to 16 mm and the width ranges from 6.6 to 10.6 mm.

9. The antenna assembly as claimed in claim 7, characterized in that, The first radiating branch (4) and the second radiating branch (5) form a G-shaped structure.

10. The antenna assembly as claimed in claim 1, characterized in that, The first radiating branch (4) is a gold-plated lead.

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