An antenna assembly for a wearable device and a wearable device

Abstract

This invention relates to the field of antenna equipment technology, specifically to an antenna assembly for wearable devices and the wearable device itself. The wearable device includes a housing and a PCB board disposed within the housing. The antenna assembly includes a main communication antenna, a secondary communication antenna, and a GPS / WIFI / BT antenna. The main communication antenna is located on one side of the wearable device housing, while the main communication antenna and the GPS / WIFI / BT antenna are distributed on the other side of the housing, making full use of the available space in the wearable device. Furthermore, a connecting line connects the secondary communication antenna and the GPS / WIFI / BT antenna, integrating them into a single unit. Simultaneously, the secondary communication antenna and the GPS / WIFI / BT antenna, acting as antenna radiators, are connected to the PCB ground via an additional grounding point between the two antennas. This extends the overall PCB ground portion outwards, providing a resonant arm closer to the 1 / 4 wavelength of the main communication antenna. This ensures a good resonance effect for the main communication antenna, effectively improving its bandwidth and efficiency, and providing a better communication experience for the wearable device.

Description

Technical Field

[0001] This invention relates to the field of antenna equipment technology, and more specifically to an antenna assembly for wearable devices and a wearable device. Background Technology

[0002] With the rapid development of communication and IoT technologies, a wider variety of products have emerged in recent years, among which wearable devices constitute a significant category. Wearable devices are portable devices worn directly on the body or integrated into clothing or accessories. Wearable devices are not merely hardware devices; they achieve powerful functionality through software support, data interaction, and cloud interaction. Therefore, their excellent communication capabilities greatly enhance the user experience. However, due to the extremely high portability requirements, wearable devices are small in size. Furthermore, the increasing number of functions integrated into wearable devices in today's market presents significant challenges to antenna design due to their limited form factor and internal space. Because the device body is generally small, there is insufficient space for antenna design, and the device body cannot meet the size requirements for low frequencies, making it difficult to achieve relatively good antenna performance. Therefore, improving antenna performance has become one of the key issues that wearable devices need to address. Summary of the Invention

[0003] The present invention provides an antenna assembly for wearable devices, the purpose of which is to design a relatively high-performance combined antenna within the limited space of electronic devices such as wearable devices to meet the communication needs of smart wearable devices.

[0004] An antenna assembly for a wearable device, the wearable device including a housing and a PCB board disposed within the housing, the antenna assembly including at least one antenna, the antenna including a feed circuit and an antenna radiator electrically connected to the feed circuit, the feed circuit being disposed on the PCB board, and the antenna radiator being disposed on the surface of the housing;

[0005] The antenna assembly includes a main communication antenna, a secondary communication antenna, and a GPS / WIFI / BT antenna. The antenna radiators of the main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna are disposed on the surface of the housing, and their corresponding feed circuits are disposed on the PCB board.

[0006] A connection line is provided on the surface between the communication sub-antenna and the GPS / WIFI / BT antenna on the housing. The antenna radiators of the communication sub-antenna and the GPS / WIFI / BT antenna are electrically connected as one unit through the connection line. The connection line is an LDS line. At least one grounding point is also provided on the connection line. This grounding point is also connected to the resonant ground of the PCB board to expand the resonant ground of the PCB board.

[0007] The main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna each have at least one feed point and at least one feed location on their antenna radiators. The antenna radiators of the main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna are electrically connected to the corresponding feed circuits on the PCB board through the feed points.

[0008] The antenna radiators of the main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna are electrically connected to the resonant ground on the PCB board through the feed point.

[0009] The shell is annular;

[0010] The antenna radiator of the main communication antenna is disposed on the surface of the front side wall of the housing, and the antenna radiators of the secondary communication antenna and the GPS / WIFI / BT antenna are disposed on the surface of the rear side wall of the housing.

[0011] The communication sub-antenna has a first feed point and a first feed location on its antenna radiator, and the GPS / WIFI / BT antenna has a second feed point and a second feed location on its antenna radiator. The connecting line also has at least one feed location. The first feed location and the second feed location are close to the feed location on the connecting line and are located on their respective sides. The first feed point is located to the right of the first feed location, and the second feed point is located to the left of the second feed location.

[0012] The first feed point, the second feed point, and the feed point on the connection line are all connected to the resonant ground of the PCB board.

[0013] The main communication antenna radiator includes a low-frequency radiation branch, a mid-frequency radiation branch, and a high-frequency radiation branch.

[0014] The antenna radiator is disposed on the surface of the housing by laser engraving and chemical plating.

[0015] The housing is a rectangular ring with arc-shaped corners. The antenna radiators of the main communication antenna are disposed on the surface of the front side wall of the housing and extend to the left and right sides of the housing. The antenna radiators of the secondary communication antenna and the GPS / WIFI / BT antenna are disposed on the surface of the rear side wall of the housing and also extend to the left and right sides of the housing.

[0016] An antenna assembly for wearable devices, as described above.

[0017] An antenna assembly for wearable devices, as described above.

[0018] According to the antenna assembly for wearable devices in the above embodiments, the wearable device includes a housing and a PCB board disposed within the housing. The antenna assembly includes a feeding circuit and an antenna radiator electrically connected to the feeding circuit. The feeding circuit is disposed on the PCB board, and the antenna radiator is disposed on the surface of the housing. This can make full use of the side space of the housing, extend the length of the antenna radiator, improve antenna performance, and enable the distribution of multi-band and multi-communication standard antennas in the small space of the wearable device, thus meeting the requirements of the wearable device. More importantly, due to the small size of the device, the PCB ground, as another radiating arm of the main antenna, does not meet the required 1 / 4 wavelength of the frequency band, which usually leads to poor low-frequency communication performance of the main antenna. In this application, multiple antennas are set on the side of the wearable device housing using LDS, with the main communication antenna set on one side of the wearable device housing, and the Aux Antenna and GPS / WIFI / BT Antenna distributed on the other side of the housing, making full use of the effective space of the wearable device. At the same time, the Aux Antenna and GPS / WIFI / BT Antenna, as antenna radiators, are connected to the PCB ground through an additional grounding point between the two antennas, extending the entire PCB ground portion outward. Together with the PCB, it provides a resonant arm of the Main Antenna (communication main antenna) that is closer to its 1 / 4 wavelength. This ensures a good resonance effect for the Main Antenna, thereby effectively improving the bandwidth and efficiency of the Main Antenna and providing a better communication experience for the wearable device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the antenna assembly according to an embodiment of this application from one viewpoint;

[0020] Figure 2 This is a schematic diagram of the antenna assembly according to an embodiment of this application from another perspective. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0022] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0023] The serial numbers assigned to components in this article, such as "first" and "second", are used only to distinguish the objects being described and have no sequential or technical meaning.

[0024] In this embodiment of the invention, an antenna assembly for wearable devices is provided. This antenna assembly can support 4G or 5G communication standards, as well as short-range communication such as Bluetooth and Wi-Fi, and GPS positioning. To accommodate multiple antennas within the limited space of the wearable device, the antenna radiators are disposed on the surface of the device's housing, while the specific feeding circuitry is housed within a PCB board inside the housing. This allows for the arrangement of multiple antennas within the wearable device, satisfying its communication and positioning requirements.

[0025] The antenna assembly includes a housing and a main communication antenna, an auxiliary communication antenna, and a GPS / WIFI / BT antenna mounted on the housing. Wearable devices are small in size and generally require mobile communication capabilities. Due to their small size, the PCB board, acting as another radiating arm of the main communication antenna, often suffers from poor low-frequency communication performance if it doesn't meet the required 1 / 4 wavelength range. This application uses LDS to mount multiple antennas on the surface of the wearable device housing. The main antenna is located on one side of the housing, while the auxiliary and GPS / WIFI / BT antennas are located on the other side, maximizing the available space. Furthermore, the auxiliary and GPS / WIFI / BT antennas, acting as radiators, extend the resonant ground of the PCB board outwards through an additional grounding point (also called "Ground") between the two antennas, providing a resonant arm closer to the 1 / 4 wavelength range for the main antenna. This ensures the main antenna's performance is optimal. The antenna achieves a good resonance effect. At the same time, since the resonant ground part of the PCB extends outward as a whole, appropriate dividing lines can be made to improve the isolation between the Aux Antenna and GPS / WIFI / BTAntenna. The antenna assembly for wearable devices provided in this application realizes the distribution of multiple antennas in a small space and can achieve good communication effect, greatly improving the user experience of mobile terminals.

[0026] The antenna assembly includes various types of antennas, such as main and secondary communication antennas for 4G or 5G communication, and GPS / WIFI / BT antennas for positioning and short-range communication. Each antenna includes an antenna radiator and a feed circuit, and the antenna radiator and the feed circuit are electrically connected. The feed circuit is mainly used to transmit and receive electrical signals from the antenna radiator.

[0027] Example 1:

[0028] Please refer to Figure 1 This embodiment provides an antenna assembly for a wearable device. The wearable device includes a housing and a PCB board disposed within the housing. The antenna assembly includes a feeding circuit and an antenna radiator electrically connected to the feeding circuit. The feeding circuit is disposed on the PCB board, and the antenna radiator is disposed on the surface of the housing. The effective radiation space and surface area of ​​the wearable device's housing are fully utilized to arrange the antenna, achieving multi-band and multi-communication standard antenna distribution in a small space to meet the requirements of high-performance multi-standard antennas.

[0029] In this embodiment, the antenna assembly includes a main communication antenna 3, an auxiliary communication antenna 42, and a GPS / WIFI / BT antenna 41. The antenna radiators of the main communication antenna 3, auxiliary communication antenna 42, and GPS / WIFI / BT antenna 41 are all disposed on the surface of the housing, and their corresponding feed circuits are disposed on the PCB board 2. The main communication antenna 3, auxiliary communication antenna 42, and GPS / WIFI / BT antenna 41 are respectively provided with feed points and feed ground points. The main communication antenna 3, auxiliary communication antenna 42, and GPS / WIFI / BT antenna 41 are electrically connected to the corresponding feed circuits on the PCB board 2 through the feed points for signal transmission; the main communication antenna 3, auxiliary communication antenna 42, and GPS / WIFI / BT antenna 41 are electrically connected to the resonant ground on the PCB board through the feed ground points.

[0030] Wearable devices, due to their portability, are generally small in size, and their functional requirements are increasing, necessitating the implementation of numerous functions within a limited space. The internal space of the device is relatively cramped, making it difficult to allocate reasonable wiring space for antenna components. In this embodiment, the housing 1 is annular, and the PCB board 2 is located inside the lower end of the housing, with its perimeter connected to the inner wall of the housing. Figure 1 Taking a mid-range viewing angle as an example, the antenna radiator of the main communication antenna 3 is disposed on the front surface of the housing 1, while the antenna radiators of the secondary communication antenna 42 and the GPS / WIFI / BT antenna 41 are disposed on the rear surface of the housing 1. "Front" and "rear" are relative terms. In actual design, the main communication antenna 3, the secondary communication antenna 42, and the GPS / WIFI / BT antenna 41 are ideally located on opposite surfaces of the housing or on two relatively far surfaces. This helps improve the isolation between the main communication antenna 3 and the secondary communication antenna 42 and the GPS / WIFI / BT antenna 41, reducing mutual interference between the antennas.

[0031] Furthermore, the PCB board 2 is generally small in size and cannot meet the low-frequency band resonant arm 1 / 4 wavelength requirement of the main communication antenna 3. In this embodiment, a connecting line 43 is provided on the surface between the secondary communication antenna 42 and the GPS / WIFI / BT antenna 41 on the housing 1. The antenna radiators of the secondary communication antenna 42 and the GPS / WIFI / BT antenna 41 are electrically connected together through the connecting line 43. This connecting line is an LDS line, and at least one grounding point is also provided on the connecting line 43. This grounding point is also connected to the resonant ground of the PCB board 1, which effectively extends the resonant ground of the PCB board (also called PCB ground or common ground). This resonant ground provides a more reasonable resonant arm for the main communication antenna 3, thereby providing an effective guarantee for the main communication antenna 3 to achieve better performance. This embodiment utilizes LDS laser engraving to distribute the antennas on the side of the housing, making full use of the side space. This effectively distributes multiple antennas around the device and extends the PCB board length by adding a ground portion between the Aux Antenna and the GPS / WIFI / BT Antenna. This provides a better resonant arm (ground) for the Main Antenna, thereby effectively improving the bandwidth and efficiency of the Main Antenna and providing a better communication experience for wearable devices.

[0032] Specifically, such as Figure 2 The communication sub-antenna 42 is provided with a first feed point 422 and a first feed point 421. The GPS / WIFI / BT antenna 41 is provided with a second feed point 411 and a second feed point 412. There are also two feed points on the connecting line 43, namely a third feed point 431 and a fourth feed point 432. The first feed point 421 and the second feed point 412 are close to the third feed point 431 and the fourth feed point 432 on the connecting line 43 and are located on both sides of them respectively. The first feed point 422 is located to the right of the first feed point 421, and the second feed point 411 is located to the left of the second feed point 412. The first feed point 421, the second feed point 412, the third feed point 431, and the fourth feed point 432 are all connected to the resonant ground of the PCB board 2. This integrates the communication sub-antenna 42, the GPS / WIFI / BT antenna 41, and the connecting line 43 into a single unit, significantly extending the resonant ground of the PCB board. This provides the main communication antenna 3 with a more reasonable resonant arm (approximately a quarter wavelength resonant arm), effectively improving the bandwidth and efficiency of the main communication antenna 3 and enhancing its communication performance. Simultaneously, the extended resonant ground of the PCB board 2 allows for the creation of appropriate separation lines to improve the isolation between the communication sub-antenna 42 and the GPS / WIFI / BT antenna 41, reducing mutual interference between the antennas and further enhancing the performance of both the communication sub-antenna 42 and the GPS / WIFI / BT antenna 41.

[0033] In this embodiment, the main communication antenna 3 is provided with a third feed point 431, a fifth feed point 32, and a sixth feed point 33. The third feed point 431 is connected to the corresponding feed circuit on the PCB board 2, and the fifth feed point 32 and the sixth feed point 33 are connected to the resonant ground on the PCB board 2.

[0034] The main communication antenna 3 includes a low-frequency radiation branch, a mid-frequency radiation branch, and a high-frequency radiation branch, covering frequencies from 800-960MHz and 1710-2690MHz, which can basically meet the coverage of commonly used 4G and 5G frequency bands.

[0035] The antenna assembly housing of this application is injection molded from LDS material. The radiator of the antenna is formed by laser engraving and chemical plating. The antenna radiator is set on the surface of the housing by laser engraving and chemical plating, making full use of the maximum space of the wearable device to distribute the antenna, and realizing the antenna distribution of multiple frequency bands and multiple communication standards in a small space.

[0036] Specifically, in this embodiment, the housing 1 is a rectangular ring with arc-shaped corners, making the corners of the product more rounded and aesthetically pleasing. The antenna radiator of the main communication antenna 3 is located on the front surface of the housing 1 and extends to the left and right surfaces of the housing 1. The antenna radiators of the secondary communication antenna 42 and the GPS / WIFI / BT antenna 41 are located on the rear surface of the housing 1 and also extend to the left and right surfaces of the housing 1. This makes full use of the maximum space of the wearable device to distribute the antennas, achieving multi-band and multi-communication standard antenna distribution in a small space.

[0037] The antenna assembly for wearable devices provided in this embodiment has the following beneficial technical effects:

[0038] In this embodiment, the antenna assembly utilizes LDS laser engraving to distribute the antennas on the side of the housing 1, making full use of the side space. This effectively distributes multiple antennas around the device. Furthermore, the addition of a connecting antenna 43 between the Aux Antenna and the GPS / WIFI / BTAntenna effectively extends the resonant ground length of the PCB board, providing a better resonant arm for the Main Antenna. This significantly improves the bandwidth and efficiency of the Main Antenna, providing a better communication experience for wearable devices.

[0039] Example 2:

[0040] An antenna assembly for a wearable device is provided, the wearable device including an antenna assembly as provided in Embodiment 1, the antenna assembly providing good communication performance, such as 4G or 5G communication, while also meeting short-range communication requirements, such as Bluetooth and WIFI communication, and GPS positioning requirements, in order to meet the needs of existing smart wearable devices.

[0041] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An antenna assembly for a wearable device, the wearable device comprising a housing and a PCB board disposed within the housing, characterized in that, The antenna assembly includes at least one antenna, the antenna including a feed circuit and an antenna radiator electrically connected to the feed circuit, the feed circuit being disposed on the PCB board, and the antenna radiator being disposed on the surface of the housing; The antenna assembly includes a main communication antenna, a secondary communication antenna, and a GPS / WIFI / BT antenna. The antenna radiators of the main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna are disposed on the surface of the housing, and their corresponding feed circuits are disposed on the PCB board. A connection line is provided on the surface between the communication sub-antenna and the GPS / WIFI / BT antenna on the housing. The antenna radiator of the communication sub-antenna and the antenna radiator of the GPS / WIFI / BT antenna are electrically connected together through the connection line. The connection line is an LDS line. At least one grounding point is also provided on the connection line. This grounding point is also connected to the resonant ground of the PCB board to expand the resonant ground of the PCB board. The main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna each have at least one feed point and at least one feed location on their antenna radiators. The antenna radiators of the main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna are electrically connected to the corresponding feed circuits on the PCB board through the feed points. The communication sub-antenna has a first feed point on its antenna radiator, the GPS / WIFI / BT antenna has a second feed point on its antenna radiator, and the connecting line also has at least one feed point. The first feed point and the second feed point are close to the feed point on the connecting line and are located on its two sides respectively. The antenna radiators of the main communication antenna, the secondary communication antenna, and the GPS / WIFI / BT antenna are electrically connected to the resonant ground on the PCB board through the feed point; The main communication antenna's radiating element includes a low-frequency radiation branch, a mid-frequency radiation branch, and a high-frequency radiation branch.

2. The antenna assembly as claimed in claim 1, characterized in that, The shell is annular; The antenna radiator of the main communication antenna is disposed on the surface of the front side wall of the housing, and the antenna radiators of the secondary communication antenna and the GPS / WIFI / BT antenna are disposed on the surface of the rear side wall of the housing.

3. The antenna assembly as described in claim 1, characterized in that, The communication sub-antenna has a first feed point on its antenna radiator, and the GPS / WIFI / BT antenna has a second feed point on its antenna radiator. The first feed point is located to the right of the first feed point, and the second feed point is located to the left of the second feed point. The first feed point, the second feed point, and the feed point on the connection line are all connected to the resonant ground of the PCB board.

4. The antenna assembly as claimed in claim 1, characterized in that, The antenna radiator is disposed on the surface of the housing by laser engraving and chemical plating.

5. The antenna assembly as described in claim 3, characterized in that, The housing is a rectangular ring with arc-shaped corners. The antenna radiators of the main communication antenna are disposed on the surface of the front side wall of the housing and extend to the left and right sides of the housing. The antenna radiators of the secondary communication antenna and the GPS / WIFI / BT antenna are disposed on the surface of the rear side wall of the housing and also extend to the left and right sides of the housing.

6. A wearable device, characterized in that, Includes the antenna assembly as described in any one of claims 1-5.

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