Antenna assembly and terminal

Abstract

The present disclosure relates to the technical field of terminals, and particularly relates to an antenna assembly and a terminal. The antenna assembly comprises: a metal decoration ring; a break, which is arranged on the metal decoration ring, and makes the metal decoration ring form a first free end and a second free end; wherein a feeding point and a first grounding point are sequentially arranged on the metal decoration ring in the direction from the first free end to the second free end, the feeding point is connected with a low-frequency signal, and the first grounding point is grounded. The present disclosure adopting the above scheme can reduce the influence on the antenna layout while reducing the cost of the terminal.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and in particular to an antenna assembly and a terminal. Background Technology

[0002] With the development of mobile communication, mobile terminals have become ubiquitous in daily life. In related technologies, antennas in terminals can be implemented using either planar coils or metal frame top-mounts. However, using a separate coil as an antenna increases the terminal's thickness and cost. While the metal frame top-mount approach can reduce costs by utilizing the terminal's metal frame as an antenna, some antennas require larger radiators. Placing these antennas on the metal frame forces other antennas into different positions, significantly impacting the antenna layout. Therefore, minimizing the impact on antenna layout while reducing terminal costs has become a key focus. Summary of the Invention

[0003] This disclosure provides an antenna assembly and terminal, the main purpose of which is to reduce the cost of the terminal while reducing the impact on the antenna layout.

[0004] According to one aspect of this disclosure, an antenna assembly is provided, comprising: Metal decorative ring; A gap is provided on the metal decorative ring, the gap causing the metal decorative ring to form a first free end and a second free end; The metal decorative ring has a power supply point and a first grounding point arranged sequentially along the direction from the first free end to the second free end. The power supply point is connected to a low-frequency signal, and the first grounding point is grounded.

[0005] Optionally, in one embodiment of this disclosure, the power supply point is located on the first free end of the metal decorative ring, and the first grounding point is located in the middle of the metal decorative ring.

[0006] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: The second grounding point is located on the second free end of the metal decorative ring and is grounded.

[0007] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: The first capacitor has its first terminal connected to the first grounding point and its second terminal grounded.

[0008] Optionally, in one embodiment of this disclosure, the capacitance value of the first capacitor ranges from 20pF to 100pF.

[0009] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: An inductor is disposed between the feed point and the low-frequency signal, with a first end of the inductor connected to the feed point and a second end of the inductor connected to the low-frequency signal.

[0010] Optionally, in one embodiment of this disclosure, the inductance value of the inductor is not greater than 68nH.

[0011] Optionally, in one embodiment of this disclosure, the low-frequency signal includes an NFC band signal.

[0012] Optionally, in one embodiment of this disclosure, the feed point is also connected to a high-frequency signal; The antenna assembly further includes: a third grounding point and a second capacitor. The third grounding point is disposed on the metal decorative ring and is located between the first grounding point and the feed point. The first end of the second capacitor is connected to the third grounding point, and the second end of the second capacitor is grounded.

[0013] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: A third capacitor is disposed between the feed point and the high-frequency signal. The first end of the third capacitor is connected to the feed point, and the second end of the third capacitor is connected to the high-frequency signal.

[0014] Optionally, in one embodiment of this disclosure, the capacitance value of the second capacitor ranges from 20pF to 100pF.

[0015] Optionally, in one embodiment of this disclosure, the high-frequency signal includes at least one of the following: GPS L5, B28, B20, B32, N28, N41, N77, N78, N79, or WiFi 2.4G band signals.

[0016] According to another aspect of this disclosure, a terminal is provided, comprising: an antenna assembly as described in any of the preceding aspects.

[0017] Optionally, in one embodiment of this disclosure, the terminal further includes: A camera module, the camera module comprising: a metal decorative ring of the antenna assembly.

[0018] Optionally, in one embodiment of this disclosure, the terminal further includes: a top and a bottom, and a first side and a second side located between the top and the bottom and in opposite positions, wherein the camera module is disposed at the end of the top near the first side.

[0019] In summary, in one or more embodiments of this disclosure, the antenna assembly includes: a metal decorative ring; a slit disposed on the metal decorative ring, the slit forming a first free end and a second free end on the metal decorative ring; wherein a feed point and a first ground point are sequentially disposed on the metal decorative ring along the direction from the first free end to the second free end, the feed point being connected to a low-frequency signal, and the first ground point being grounded. Therefore, by creating a slit in the metal decorative ring and providing a feed point and a first ground point, the antenna can be configured by reusing the metal decorative ring, eliminating the need for additional antenna components and reducing the cost of the terminal. Simultaneously, by reusing the metal decorative ring, an antenna requiring a large radiator can be configured, eliminating the need to additionally configure an antenna with a large radiator on the mid-frame of the terminal device, thus reducing the impact on the antenna layout.

[0020] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a background schematic diagram of a terminal provided in an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the structure of the first type of metal decorative ring provided in the embodiments of this disclosure; Figure 3 This is a schematic diagram of the structure of the second type of metal decorative ring provided in the embodiments of this disclosure; Figure 4 This is a schematic diagram of the structure of the third type of metal decorative ring provided in the embodiments of this disclosure; Figure 5 This is a schematic diagram of the structure of the fourth type of metal decorative ring provided in the embodiments of this disclosure; Figure 6 This is a structural schematic diagram of the fifth type of metal decorative ring provided in the embodiments of this disclosure. Detailed Implementation

[0022] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0023] With the development of science and technology, mobile terminals are becoming increasingly widespread, improving people's lives and work. In mobile terminal systems, antennas, such as Near Field Communication (NFC) antennas, can adopt either planar coil solutions or metal frame solutions.

[0024] According to some embodiments, using a separate coil as the NFC antenna increases the Z-axis thickness of the phone, and since the NFC antenna is a standard component, it increases the cost of the phone.

[0025] In some embodiments, Figure 1 This is a background diagram of a terminal provided in an embodiment of this disclosure. Figure 1 As shown, using the phone's metal frame as an NFC antenna can effectively reduce the phone's cost. However, NFC antennas have high requirements for sensing area and require a large radiator. This means that the NFC antenna needs to occupy a long metal frame, which significantly impacts the overall antenna layout, forcing many other antennas to other positions and putting considerable pressure on the overall antenna design. Therefore, how to reduce terminal costs while minimizing the impact on antenna layout has become a key focus.

[0026] The present disclosure will now be described in detail with reference to specific embodiments.

[0027] Figure 2 This is a schematic diagram of the structure of a first antenna assembly provided in an embodiment of this disclosure.

[0028] like Figure 2 As shown, the antenna assembly includes: Metal decorative ring 1; The slit 2 is provided on the metal decorative ring 1, and the slit 2 causes the metal decorative ring 1 to form a first free end 3 and a second free end 4. Among them, a power supply point 5 and a first grounding point 6 are sequentially arranged on the metal decorative ring 1 along the direction from the first free end 3 to the second free end 4. The power supply point 5 is connected to the low frequency signal 10, and the first grounding point 6 is grounded to GND.

[0029] According to some embodiments, the metal decorative ring 1 refers to the camera metal DECO. In a terminal equipped with a camera module, the metal decorative ring 1 is used to fix and protect the camera module, and also serves a decorative function.

[0030] In some embodiments, the shape of the metal decorative ring 1 is not specifically defined by a particular shape. For example, the metal decorative ring 1 can be racetrack shaped, such as... Figure 2 As shown. The metal decorative ring 1 can also be circular, for example.

[0031] According to some embodiments, a portion of the metal decorative ring 1 between the feed point 5 and the first ground point 6 forms the first antenna. In this case, the first antenna extends from the upper frame of the feed point 5 and returns to ground from the first ground point 6, which is closest to the feed point 5.

[0032] In some embodiments, the first antenna can be, for example, an NFC antenna. In this case, the low-frequency signal 10 includes an NFC band signal. The frequency corresponding to this NFC band signal can be, for example, 13.56MHz. By reusing the original metal decorative ring 1 of the terminal to set up the NFC antenna, and using the metal decorative ring 1 to implement NFC card swiping, the swiping area is larger than that of the metal frame. Furthermore, the swiping area can increase as the area of ​​the metal decorative ring 1 increases, and the swiping position can also be adjusted by adjusting the position of the metal decorative ring 1, thereby improving the user's card swiping experience. At the same time, it does not increase additional antenna costs and reduces the impact on antenna layout.

[0033] In some embodiments, the positions of the feed point 5 and the first ground point 6 are not limited. For example, the feed point 5 can be set on the first free end 3 of the metal decorative ring 1, and the first ground point 6 can be set on the second free end 4 of the metal decorative ring 1. In this case, the first antenna can reuse the entire path of the metal decorative ring 1, and the radiator length of the first antenna is larger, resulting in higher performance.

[0034] Alternatively, the feed point 5 can be set on the first free end 3 of the metal decorative ring 1, and the first grounding point 6 can be set in the middle of the metal decorative ring 1. In this case, only half of the radiator of the metal decorative ring 1 is used as the first antenna. Therefore, the requirements for the other half of the metal decorative ring 1 are reduced. That is to say, the other half of the metal decorative ring 1 can be freely grounded, and the shape design of the other half of the metal decorative ring 1 can also be more flexible.

[0035] Alternatively, in one embodiment of this disclosure, Figure 3 This is a schematic diagram of the structure of the second type of metal decorative ring provided in an embodiment of this disclosure. Figure 3 As shown, the antenna assembly also includes: The second grounding point 7 is set on the second free end 4 of the metal decorative ring 1, and the second grounding point 7 is grounded to GND. The first capacitor C1 has its first terminal connected to the first grounding point 6, and its second terminal grounded to GND.

[0036] According to some embodiments, the capacitance value of the first capacitor C1 can be in the range of 20pF to 100pF.

[0037] According to some embodiments, a portion of the metal decorative ring 1 between the feed point 5 and the first ground point 6 forms a second antenna. The second antenna is not specifically a fixed antenna; when the position of the first ground point 6 changes, the radiating length of the second antenna changes, thereby causing a change in the frequency range corresponding to the second antenna, and consequently, a change in the type of the second antenna.

[0038] For example, such as Figure 3 As shown, when the first grounding point 6 is located at one-quarter of the distance from the first free end 3 to the second free end 4 in the metal decorative ring 1, the second antenna can be a Global Positioning System (GPS) L5 antenna. At this time, the feed point can also be connected to a high-frequency signal 9, which includes at least one of the following: GPS L5, B28, B20, B32, N28, N41, N77, N78, N79, or WiFi 2.4G band signals. The frequency range of the GPS L5 band signal can, for example, be from 1176.45-1.023MHz to 1176.45+1.023MHz.

[0039] In some embodiments, such as Figure 3 As shown, the second grounding point 7 can be set on the second free end 4 of the metal decorative ring 1. At this time, since the frequency corresponding to the first antenna is lower than the frequency corresponding to the second antenna, for the low-frequency first antenna, the first capacitor C1 is in an open-circuit state, so the first antenna can ignore the first grounding point 6 and return to ground from the upper frame of the feed point 5, through the second grounding point 7, which is closest to the feed point 5. Simultaneously, for the high-frequency second antenna, the first capacitor C1 is in a short-circuit state, so the second antenna can return to ground from the upper frame of the feed point 5, through the first grounding point 6, which is closest to the feed point 5.

[0040] It is easy to understand that moving the less important second antenna from the metal frame to the metal decorative ring 1, and simultaneously integrating the first and second antennas in the metal decorative ring 1, can reduce the pressure on the terminal antenna scheme, further optimize the performance of the important antennas on the metal frame, and thus improve the flexibility of the terminal antenna architecture.

[0041] It should be noted that when the first antenna and the second antenna are simultaneously integrated within the metal decorative ring 1, the feed point 5 may include a first sub-feed point and a second sub-feed point. The first sub-feed point is used to combine with the second grounding point 7 to form the first antenna, and the second sub-feed point is used to combine with the first grounding point 6 to form the second antenna. The relative positional relationship between the first sub-feed point and the second sub-feed point is not limited. For example, the first sub-feed point and the second sub-feed point can be sequentially arranged on the metal decorative ring 1 along the direction from the first free end 3 to the second free end 4, or the second sub-feed point and the first sub-feed point can be sequentially arranged on the metal decorative ring 1 along the direction from the first free end 3 to the second free end 4.

[0042] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: a third grounding point 8 and a second capacitor C2. The third grounding point 8 is disposed on the metal decorative ring 1 and is located between the first grounding point 6 and the feed point 5. The first end of the second capacitor C2 is connected to the third grounding point 8, and the second end of the second capacitor C2 is grounded to GND.

[0043] According to some embodiments, the capacitance value of the second capacitor C2 can be in the range of 20pF to 100pF.

[0044] According to some embodiments, the power supply point 5 can be set on the first free end 3 of the metal decorative ring 1, the first grounding point 6 and the third grounding point 8 can be set in the middle of the metal decorative ring 1, the second grounding point 7 can be set on the second free end 4 of the metal decorative ring 1, and at the same time, the first end of the first capacitor C1 is connected to the first grounding point 6, and the second end of the first capacitor C1 is grounded to GND.

[0045] In some embodiments, the locations of the first grounding point 6 and the third grounding point 8 are not limited. For example, the first grounding point 6 can be located between the third grounding point 8 and the power supply point 5, such as... Figure 4 As shown. Alternatively, the third grounding point 8 can be set between the first grounding point 6 and the power supply point 5.

[0046] It is easy to understand that, since the first grounding point 6, the second grounding point 7, and the third grounding point 8 are all equivalent to direct grounding for the second antenna, and the second antenna utilizes the grounding point of the feed point 5 and the grounding point of the capacitor closest to the feed point 5 (such as...) Figure 5 The metal decorative ring 1 between the first grounding point 6 and the rest of the grounding point (such as...) serves as the radiator, while the other grounding points (such as...) serve as the return ground. Figure 5 The second grounding point 7 and the third grounding point 8 are used for the second antenna to reduce the high-order mode generated by the entire metal decorative ring 1, thereby improving the performance of the second antenna.

[0047] According to some embodiments, Figure 5 This is a schematic diagram of the structure of the fourth type of metal decorative ring provided in an embodiment of this disclosure. Figure 5 As shown, the power supply point 5 can be set on the first free end 3 of the metal decorative ring 1, the first grounding point 6 and the third grounding point 8 can be set in the middle of the metal decorative ring 1, and the third grounding point 8 can be set between the first grounding point 6 and the power supply point 5, and the second grounding point 7 can be set on the second free end 4 of the metal decorative ring 1.

[0048] It is easy to understand that by simultaneously integrating the first antenna and the second antenna in the metal decorative ring 1, and setting the first grounding point 6 in the middle of the metal decorative ring 1, while setting the second grounding point 7 on the second free end 4 of the metal decorative ring 1, the impact of generating redundant resonance on antenna performance can be reduced.

[0049] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: Inductor L1 is positioned between the power supply point 5 and the low-frequency signal 10. The first end of inductor L1 is connected to the power supply point 5, and the second end of inductor L1 is connected to the low-frequency signal 10.

[0050] According to some embodiments, the inductance value corresponding to the inductor is no greater than 68nH.

[0051] In some embodiments, when the feed point 5 includes a first sub-feed point and a second sub-feed point, the inductor L1 is disposed between the first sub-feed point and the low-frequency signal 10.

[0052] It is easy to understand that by setting an inductor L1 between the feed point 5 and the low-frequency signal 10, the inductor L1 is equivalent to an open circuit for a high-frequency antenna like the second antenna. Therefore, the influence of the first antenna's RF front-end and matching network on the second antenna can be reduced, and the performance of the second antenna can be improved.

[0053] Optionally, in one embodiment of this disclosure, the antenna assembly further includes: The third capacitor C3 is located between the feed point 5 and the high-frequency signal 9. The first end of the third capacitor C3 is connected to the feed point 5, and the second end of the third capacitor C3 is connected to the high-frequency signal 9.

[0054] According to some embodiments, the capacitance value of the second capacitor ranges from 20pF to 100pF.

[0055] In some embodiments, when the feed point 5 includes a first sub-feed point and a second sub-feed point, the third capacitor C3 is disposed between the second sub-feed point and the high-frequency signal 9.

[0056] It is easy to understand that by setting a third capacitor C3 between the feed point 5 and the high-frequency signal 9, the third capacitor C3 is equivalent to an open circuit for the first antenna, which is a low-frequency antenna. Therefore, the influence of the second antenna's RF front-end and matching network on the first antenna can be reduced.

[0057] In summary, the antenna assembly provided in this embodiment includes: a metal decorative ring; a slit disposed on the metal decorative ring, forming a first free end and a second free end; wherein a feed point and a first ground point are sequentially disposed on the metal decorative ring along the direction from the first free end to the second free end, the feed point being connected to a low-frequency signal, and the first ground point being grounded. Therefore, by creating a slit in the metal decorative ring and providing the feed point and the first ground point, the antenna can be configured by reusing the metal decorative ring, eliminating the need for additional antenna components and reducing terminal costs. Simultaneously, by reusing the metal decorative ring, an antenna requiring a large radiator can be configured, eliminating the need to configure an antenna requiring a large radiator on a metal frame, thus reducing the impact on antenna layout.

[0058] According to embodiments of this disclosure, a terminal is also provided.

[0059] The terminal includes an antenna assembly as shown in the aforementioned embodiments.

[0060] According to some embodiments, the terminal also includes: The camera module includes a metal decorative ring 1 for the antenna assembly.

[0061] According to some embodiments, the terminal further includes: a top and a bottom, and a first side and a second side located between the top and the bottom and in opposite positions, with a camera module disposed at the top end near the first side.

[0062] In some embodiments, the terminal further includes a motherboard. The first capacitor C1, the second capacitor C2, the third capacitor C3, the inductor L1, the low-frequency signal 10, and the high-frequency signal 9 in the metal decorative ring 1 can be integrated on the motherboard. When the first capacitor C1 is connected to the first ground point 6, the second capacitor C2 is connected to the third ground point 8, the third capacitor C3 is connected to the power supply point 5, and the inductor L1 is connected to the power supply point 5, they can all be connected by metal springs or conductive foam.

[0063] In some embodiments, the first grounding point 6, the second grounding point 7, and the third grounding point 8 can be connected to the grounding point on the motherboard via metal springs or conductive foam to achieve grounding.

[0064] In summary, the terminal provided in this embodiment of the present disclosure, by creating a slit in the metal decorative ring and setting a feed point and a first ground point, allows for the reuse of the metal decorative ring to set up the antenna, eliminating the need for additional antenna components and reducing the cost of the terminal. Furthermore, by reusing the metal decorative ring to set up an antenna requiring a large radiator, it is unnecessary to set up an antenna requiring a large radiator on the metal frame, thus reducing the impact on the antenna layout.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms may refer to different embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. An antenna assembly, characterized in that, include: Metal decorative ring; A gap is provided on the metal decorative ring, the gap causing the metal decorative ring to form a first free end and a second free end; The metal decorative ring is provided with a power supply point and a first grounding point in sequence along the direction from the first free end to the second free end. The power supply point is connected to a low-frequency signal or a high-frequency signal, and the first grounding point is grounded. The power supply point is located on the first free end of the metal decorative ring. The second grounding point is located on the second free end of the metal decorative ring and is grounded. A first capacitor, the first end of which is connected to the first grounding point, and the second end of which is grounded. A partial metal decorative ring between the feed point and the second grounding point forms a first antenna, and a partial metal decorative ring between the feed point and the first grounding point forms a second antenna. The frequency corresponding to the first antenna is lower than the frequency corresponding to the second antenna.

2. The antenna assembly according to claim 1, characterized in that, The first grounding point is located in the middle of the metal decorative ring.

3. The antenna assembly according to claim 1, characterized in that, The capacitance value of the first capacitor ranges from 20pF to 100pF.

4. The antenna assembly according to claim 1, characterized in that, The antenna assembly also includes: An inductor is disposed between the feed point and the low-frequency signal, with a first end of the inductor connected to the feed point and a second end of the inductor connected to the low-frequency signal.

5. The antenna assembly according to claim 4, characterized in that, The inductance value of the inductor is no greater than 68nH.

6. The antenna assembly according to claim 1, characterized in that, The low-frequency signal includes: NFC band signal.

7. The antenna assembly according to any one of claims 1-6, characterized in that, The antenna assembly further includes: a third grounding point and a second capacitor. The third grounding point is disposed on the metal decorative ring and is located between the first grounding point and the feed point. The first end of the second capacitor is connected to the third grounding point, and the second end of the second capacitor is grounded.

8. The antenna assembly according to claim 7, characterized in that, The antenna assembly also includes: A third capacitor is disposed between the feed point and the high-frequency signal. The first end of the third capacitor is connected to the feed point, and the second end of the third capacitor is connected to the high-frequency signal.

9. The antenna assembly according to claim 7, characterized in that, The capacitance value of the second capacitor ranges from 20pF to 100pF.

10. The antenna assembly according to claim 7, characterized in that, The high-frequency signal includes at least one of the following: GPS L5, B28, B20, B32, N28, N41, N77, N78, N79 or WiFi 2.4G band signal.

11. A terminal, characterized in that, include: The antenna assembly as described in any one of claims 1 to 10.

12. The terminal according to claim 11, characterized in that, The terminal also includes: A camera module, the camera module comprising: a metal decorative ring of the antenna assembly.

13. The terminal according to claim 12, characterized in that, The terminal further includes: a top and a bottom, and a first side and a second side located between the top and the bottom and in opposite positions, wherein the camera module is disposed at the end of the top near the first side.

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