CN112993515B - Wearable electronic equipment - Google Patents

Abstract

The embodiment of the application provides wearable electronic equipment, which comprises a middle plate, a frame and a circuit board, wherein the frame is arranged at the edge of the middle plate, and the circuit board is arranged on the middle plate. The circuit board is provided with a first bracket and a second bracket at intervals, the first bracket is provided with a first antenna, the second bracket is provided with a second antenna, the first antenna is arranged along a first direction, the second antenna is arranged along a second direction, the first direction is vertical to the second direction, and when wireless signals are transmitted, orthogonal polarization is formed by mutually perpendicular currents of the first antenna and the second antenna, so that isolation between the first antenna and the second antenna is greatly improved.

Description

Wearable electronic equipment

Technical Field

The application relates to the technical field of electronics, in particular to wearable electronic equipment.

Background

With the development of communication technology, wearable electronic devices such as smart watches are becoming more popular. The intelligent watch not only has the function of a common watch, but also has a wireless communication function, namely, the intelligent watch can realize the receiving and transmitting of wireless signals. However, due to the small internal space of the smart watch, the antenna design in the smart watch is difficult.

Disclosure of Invention

The embodiment of the application provides a wearable electronic device, which can increase the isolation between antennas and improve the performance of the antennas.

The embodiment of the application provides wearable electronic equipment, which comprises:

a middle plate;

the frame is arranged at the periphery of the middle plate and is connected with the middle plate;

the circuit board is arranged on the middle plate, and a first bracket and a second bracket are arranged on the circuit board at intervals;

the first antenna is arranged on the first bracket and is arranged along a first direction; and

the second antenna is arranged on the second bracket and is arranged along a second direction;

the first direction is perpendicular to the second direction, so that isolation between the first antenna and the second antenna is improved.

According to the wearable electronic device provided by the embodiment of the application, the first antenna is arranged on the first bracket, the second antenna is arranged on the second bracket, and a certain distance exists between the first antenna and the second antenna and between the first antenna and the electronic device on the circuit board, so that the influence of the electronic device on the circuit board on the first antenna and the second antenna can be avoided. And, the first antenna sets up along first direction, and the second antenna sets up along the second direction, and first direction and second direction are perpendicular, and then when transmitting wireless signal, the electric current of first antenna and second antenna mutually perpendicular forms orthogonal polarization, and the isolation between first antenna and the second antenna improves by a wide margin.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a wearable electronic device according to an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of the wearable electronic device shown in fig. 1 along the direction P1 to P2.

Fig. 3 is a schematic diagram of a second structure of a wearable electronic device according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a third structure of a wearable electronic device according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a fourth wearable electronic device according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a fifth structure of a wearable electronic device according to an embodiment of the present application.

Fig. 7 is a circuit schematic of the fourth tuning circuit shown in fig. 6.

Fig. 8 is a schematic diagram of a sixth structure of a wearable electronic device according to an embodiment of the present application.

Fig. 9 is a seventh structural schematic diagram of a wearable electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

Referring to fig. 1, fig. 1 is a schematic diagram of a first structure of a wearable electronic device according to an embodiment of the present application, and the wearable electronic device 10 may be, but is not limited to, a bracelet, a smart watch, a wireless earphone, and other electronic devices. The wearable electronic device 10 according to the embodiment of the present application is illustrated by taking a smart watch as an example.

The wearable electronic device 10 may include: middle plate 100, frame 200, circuit board 300, back cover 400, first bracket 500, second bracket 600, first antenna 101, and second antenna 102. The frame 200 is disposed at the periphery of the middle plate 100 and connected to the middle plate 100, the rear cover 400 is disposed opposite to the middle plate 100, and the rear cover 400 is also connected to the periphery of the frame 200. The circuit board 300 is disposed on the middle board 100, the middle board 100 is used for carrying the circuit board 300, the first and second brackets 500 and 600 are located at one side of the circuit board 300, and the first and second brackets 500 and 600 are disposed on the circuit board 300 at intervals. The first antenna 101 is disposed on the first bracket 500, and the second antenna 102 is disposed on the second bracket 600. Wherein the first antenna 101 is disposed along a first direction, the second antenna 102 is disposed along a second direction, and the first direction and the second direction are perpendicular to each other, so as to improve isolation between the first antenna 101 and the second antenna 102.

For easy understanding of the relationship among the middle board 100, the frame 200, the circuit board 300, the rear cover 400, the first bracket 500 and the second bracket 600, please refer to fig. 2 together, fig. 2 is a schematic cross-sectional view of the wearable electronic device shown in fig. 1 along the direction P1 to P2.

The middle plate 100 may be a thin plate or sheet structure for placing the circuit board 300, electronic components or functional components, etc., and the middle plate 100 may be a hollow frame structure. The midplane 100 is used to provide support for functional components in the wearable electronic device 10 to mount the functional components together in the wearable electronic device 10.

It is understood that the profile of the midplane 100 may be rectangular, circular, oval, etc. Accordingly, the external contour of the wearable electronic device 10 may also be rectangular, circular, oval, etc.

The frame 200 is disposed at the periphery of the middle plate 100 and connected to the middle plate 100. The rear cover 400 is disposed opposite to the middle plate 100, the rear cover 400 is connected to the bezel 200, and the bezel 200, the rear cover 400, and the middle plate 100 form a receiving part 800, and the receiving part 800 may be used to place functional devices of the wearable electronic device 10. The middle plate 100 may be provided with a display screen 700 for displaying images of the wearable electronic device 10, or for displaying images and performing man-machine interaction for a user, for example, the user may perform touch operation through the display screen 700.

The rear cover 400 may be a metal rear cover, and the rear cover 400 may be formed using a unitary configuration in which some or all of the rear cover 400 is machined or molded as a single structure, or may be formed using multiple structures (e.g., an inner frame structure, one or more structures forming an outer housing surface, etc.). The bezel 200 and the back cover 400 may form the outer contours of the wearable electronic device 10 in order to accommodate functional components of the wearable electronic device 10, etc., while forming a seal and protection for the electronic components inside the wearable electronic device 10.

It is understood that the rim 200 may be fully connected to the edge of the midplane 100, i.e., all edges of the midplane 100 are connected to the rim 200. The rim 200 may also be connected to a portion of the edge of the midplane 100, i.e., a portion of the rim 200 may be spaced from the edge of the midplane 100, which may be used to form a headroom region for an antenna radiator disposed on the rim 200.

The circuit board 300 may be mounted on the midplane 100. The circuit board 300 may be the motherboard of the wearable electronic device 10. Wherein, the circuit board 300 is provided with a radio frequency circuit. The radio frequency circuitry is used to enable wireless communication between the wearable electronic device 10 and a base station or other electronic device. In addition, one or more of microphone, speaker, receiver, earphone interface, camera, acceleration sensor, gyroscope, and processor may be integrated with the circuit board 300. Meanwhile, the display screen 700 may be electrically connected to the circuit board 300 to control display of the display screen 700 by a processor on the circuit board 300.

The first and second brackets 500 and 600 may be located at one side of the circuit board 300, for example, the first and second brackets 500 and 600 are disposed at one side of the circuit board 300 remote from the display screen 700. Also, the first and second brackets 500 and 600 may be mounted on the circuit board 300, and the first and second brackets 500 and 600 together cover all or part of the circuit board 300, so that the circuit board 300 is protected when the circuit board 300 is mounted on the middle board 100.

The first bracket 500 and the second bracket 600 may be arranged at intervals, the first bracket 500 and the second bracket 600 may be used for arranging antennas, specifically, the first bracket 500 may be used for arranging the first antenna 101, and the second bracket 600 may be used for arranging the second antenna 102, so that on one hand, space occupied by the first antenna 101 and the second antenna 102 may be saved; on the other hand, the distance between the first antenna 101, the second antenna 102 and the functional components on the circuit board 300 may be increased, so that the mutual interference between the first antenna 101, the second antenna 102 and the functional components on the circuit board 300 may be reduced.

With continued reference to fig. 1, the wearable electronic device 10 may further include a wearing part 900, where the wearing part 900 is connected to opposite ends of the frame 200, and the wearing part 900 is used to fix the wearable electronic device 10 to an external object. The external object may be a human body, for example: wrist or arm of human body. The wearing part 900 may include a first connection part and a second connection part, where one end of the second connection part away from the frame 200 is movably connected with the first connection part, so as to facilitate the disassembly of the wearable electronic device 10.

It is understood that the two ends of the frame 200 connected to the wearing portion 900 may be directly connected to the wearing portion 900 without providing a gap, so as to increase the mechanical strength between the frame 200 and the wearing portion 900 and reduce the possibility of the wearing portion 900 being separated from the frame 200. A gap may be provided between the other end of the frame 200, which is not connected to the wearing part 900, and the middle plate 100 to form a clear area of the antenna radiator.

The wearable electronic device 10 may also include cover and battery structures. The cover plate is mounted on the middle plate 100, and covers the display screen 700 to protect the display screen 700 from being scratched or damaged by water. The cover plate may be a transparent glass cover plate, so that a user can observe the content displayed on the display screen 700 through the cover plate. Wherein, it can be understood that the cover plate can be a glass cover plate made of sapphire material.

The battery may be mounted on the middle plate 100 or in the receiving part 800. Meanwhile, the battery is electrically connected to the circuit board 300 to realize that the battery supplies power to the wearable electronic device 10. Wherein the circuit board 300 may be provided with a power management circuit thereon. The power management circuit is used to distribute the voltage provided by the battery to the various electronic components in the wearable electronic device 10.

Wherein the display 700 provided on the middle board 100 may be formed of a hard case. The display screen 700 may also include a liquid crystal display (Liquid Crystal Display, LCD) or an Organic Light-Emitting Diode (OLED) type display screen.

In the embodiment of the application, the first antenna 101 is disposed on the first bracket 500, the second antenna 102 is disposed on the second bracket 600, and the first bracket 500 and the second bracket 600 are disposed on the circuit board 300 at intervals, so that a certain distance exists between the first antenna 101 and the second antenna 102 and the electronic device on the circuit board 300, and the influence of the electronic device on the circuit board 300 on the first antenna 101 and the second antenna 102 can be avoided. And, the first antenna 101 is arranged along the first direction, the second antenna 102 is arranged along the second direction, and the first direction is vertical to the second direction, so that when wireless signals are transmitted, currents of the first antenna 101 and the second antenna 102 are mutually vertical to form orthogonal polarization, isolation between the first antenna 101 and the second antenna 102 is improved, performance of an antenna system of the wearable electronic device 10 is improved, and stability of communication is guaranteed.

It will be appreciated that in the description of embodiments of the application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 3, fig. 3 is a schematic diagram of a second structure of a wearable electronic device according to an embodiment of the application. The first and second brackets 500 and 600 may be oppositely disposed at both ends of the circuit board 300 to increase the distance of the first and second antennas 101 and 102. Specifically, the circuit board 300 may include a first end portion and a second end portion that are disposed opposite to each other, where the first bracket 500 is disposed at the first end portion, and the second bracket 600 is disposed at the second end portion, so that a distance between the first antenna 101 and the second antenna 102 is longer, interference between a wireless signal transmitted by the first antenna 101 and a wireless signal transmitted by the second antenna 102 is smaller, and isolation between the first antenna 101 and the second antenna 102 may be improved.

It is understood that the first antenna 101 and the second antenna 102 may be formed using a three-dimensional laser process. For example, the first antenna 101 and the second antenna 102 may be formed directly on the first bracket 500 and the second bracket 600 using a Laser Direct Structuring (LDS) technique, first laser-induced modification of the material, and then selective metallization. For another example, the first antenna 101 and the second antenna 102 may be Laser Activated (LAP) technology, laser induced common materials, and then metal plating is selected to be directly formed on the first bracket 500 and the second bracket 600.

The first antenna 101 and the second antenna 102 may also be formed using a printed antenna Process (PDS). Alternatively, the first antenna 101 and the second antenna 102 may be disposed on the first bracket 500 and the second bracket 600 by means of patches. The formation manner of the first antenna 101 and the second antenna 102 is not limited in the embodiment of the present application.

The first antenna 101 and the second antenna 102 may transmit wireless signals in the same frequency band, so as to implement multiple input multiple output transmission of the wireless signals. The first antenna 101 and the second antenna 102 may also transmit wireless signals in different frequency bands, so as to realize the function of transmitting wireless signals in different frequency bands by the wearable electronic device 10.

The above-mentioned radio signal (RF-RadioFrequency signal) may refer to an electromagnetic wave modulated with a certain transmission frequency. The wireless signals typically include fourth generation mobile communication (Long Term Evolution, 4G for short), fifth generation mobile communication (5 th generation mobile networks, 5G for short), wireless fidelity (Wireless Fidelity, WIFI for short), global positioning system (Global Positioning System, GPS) signals, and the like.

The 4G signal is a 4G signal transmitted based on a universal mobile telecommunication system (Universal Mobile Telecommunications System, abbreviated as UMTS) technical standard established by The third generation partnership project (The 3rd Generation Partnership Project, abbreviated as 3 GPP) organization, and is used for accessing a wireless communication network to realize wireless communication. The 4G signal may be classified into a Low frequency wireless signal (LB), an intermediate frequency wireless signal (MB), and a High frequency wireless signal (HB), wherein the LB includes a frequency range of 700MHz to 960MHz, the MB includes a frequency range of 1710MHz to 2170MHz, and the HB includes a frequency range of 2104MHz to 2690MHz.

The 5G signals include at least 5G signals having frequency ranges of N41 (2.496 GHz-2.690 GHz), N78 (3.3 GHz-3.6 GHz), and N79 (4.8 GHz-5 GHz).

The WIFI signal is used for accessing the wireless local area network to realize network communication, and the WIFI signal comprises a WIFI signal with the frequency of 2.4GHz and a WIFI signal with the frequency of 5 GHz. The frequency range of the GPS signal is 1.2 GHz-1.6 GHz; the GPS signal is used for accessing a wireless communication network to realize wireless communication. The GPS signals include 1.57542GHz in the L1 band, 1.22760GHz in the L2 band, and 1.1745 GHz in the L5 band.

It will be appreciated that the first antenna 101 may transmit any of the above 4G signal, 5G signal, WIFI signal, and GPS signal, and the second antenna 102 may also transmit any of the above 4G signal, 5G signal, WIFI signal, and GPS signal.

Specifically, the radio frequency circuit on the circuit board 300 may be electrically connected to the first antenna 101 and the second antenna 102, a first signal source and a second signal source may be further disposed on the circuit board 300, the radio frequency circuit may feed the wireless signals such as the 4G signal, the 5G signal, the WIFI signal, the GPS signal, etc. into the first antenna 101 through the first signal source, and the radio frequency circuit may also feed the wireless signals such as the 4G signal, the 5G signal, the WIFI signal, the GPS signal, etc. into the second antenna 102 through the second signal source.

It will be appreciated that the first antenna 101 and the second antenna 102 may be commonly connected to a radio frequency circuit to reduce power consumption of the radio frequency circuit. The first antenna 101 and the second antenna 102 may also be connected to different rf circuits, respectively, to achieve precise control of the first antenna 101 and the second antenna 102.

The first signal source may include a first feeding end and a first grounding end, and the wireless signal is fed into the first antenna 101 from the first feeding end and then is grounded from the first grounding end to form a signal loop, so that the first antenna 101 transmits the wireless signal. The second signal source may also include a second feeding end and a second grounding end, where the wireless signal is fed into the second antenna 102 from the second feeding end and then grounded from the second grounding end to form a signal loop, so that the second antenna 102 transmits the wireless signal. The first grounding end and the second grounding end may be disposed on the rear cover 400, the circuit board 300, the frame 200, the middle board 100, and the like. The specific setting positions of the feed point and the ground point may be selected according to the frequency bands of the wireless signals actually transmitted by the first antenna 101 and the second antenna 102.

The circuit board 300 may also be provided with a first tuning circuit 310 and a second tuning circuit 320. With continued reference to fig. 3, the first antenna 101 may be connected to a first tuning circuit 310, where the first tuning circuit 310 may include at least a first path and a second path, and when the first path is on, the first antenna 101 may be configured to transmit a wireless signal in a first frequency band, and when the second path is on, the first antenna 101 may be configured to transmit a wireless signal in a second frequency band.

The circuit board 300 may further be provided with a second tuning circuit 320, and the second antenna 102 may also be connected to the second tuning circuit 320, where the second tuning circuit 320 may also include at least a first path and a second path, and when the first path is turned on, the second antenna 102 may be used to transmit a radio signal in the first frequency band, and when the second path is turned on, the second antenna 102 may be used to transmit a radio signal in the second frequency band.

It can be appreciated that the first tuning circuit 310 and the second tuning circuit 320 may be implemented by using various switches and resistors and/or inductors and/or capacitors, for example, may be a single pole single throw switch, a single pole double throw switch, a single pole triple throw switch, and a single pole four throw switch, where the switches in each tuning circuit are respectively connected with capacitors with different capacitance values or resistors with different resistance values, so as to implement that the first antenna 101 and the second antenna 102 transmit more wireless signals with different frequency bands, and meet the requirements of the wearable electronic device 10 for wireless signals with multiple frequency bands. In addition, the first tuning circuit 310 and the second tuning circuit 320 are adjusted, so that the first antenna 101 and the second antenna 102 can transmit wireless signals in the same frequency band, and multiple input multiple output transmission of the wireless signals in the frequency band can be realized.

The first antenna 101 and the second antenna 102 may be both used for transmitting WIFI signals, so as to implement multiple-input multiple-output transmission of WIFI signals.

It will be appreciated that the length of the first antenna 101 may be less than the length of the second antenna 102. The first signal source may be used to generate 2.4G WIFI signals such that the first antenna 101 may be used to transmit 2.4G WIFI signals, and the second signal source may be used to generate GPS signals and 2.4G WIFI signals such that the second antenna 102 may be used to transmit GPS signals or 2.4G WIFI signals. When the first antenna 101 and the second antenna 102 are simultaneously used to transmit 2.4G WIFI signals, multiple input multiple output transmission of 2.4G WIFI signals can be achieved.

It should be noted that, in the wearable electronic device 10 of the embodiment of the present application, the first antenna 101 and the second antenna 102 may also transmit wireless signals in other frequency bands, such as WIFI signals, 4G signals, 5G signals, etc., which are not limited to transmitting GPS signals and 2.4G WIFI signals. Taking the transmission of the 5G signal as an example, the frequency band range of the 5G signal may include N78, N79 and N41, by changing the impedance of the first antenna 101 through the first tuning circuit 310, the first antenna 101 may meet the requirements of different 5G frequency bands of the wearable electronic device 10, and by changing the impedance of the second antenna 102 through the second tuning circuit 320, the second antenna 102 may also meet the requirements of different 5G frequency bands of the wearable electronic device 10.

It can be appreciated that the first antenna 101 may also be connected to a plurality of first tuning circuits 310, and transmission of signals in different frequency bands can be achieved through mutual cooperation between the plurality of first tuning circuits 310. For example, a low-frequency wireless signal, an intermediate-frequency wireless signal, a high-frequency wireless signal, which can transmit a 4G signal; for example, the 5G signals of N78, N79 and N41 frequency bands can be transmitted; for example, GPS signals in the L1, L2 and L5 frequency bands can be transmitted.

Of course, the second antenna 102 may also be connected with a plurality of second tuning circuits 320, and transmission of signals in different frequency bands may also be achieved through mutual cooperation between the plurality of second tuning circuits 320.

According to the wearable electronic device 10 of the embodiment of the application, the types of the switches or the specifications of the inductance, the resistance and the capacitance are changed according to actual requirements, so that the requirements of the wearable electronic device 10 for signals in different frequency bands are met.

It should be noted that "transmitting" in the above-mentioned transmission wireless signals includes receiving wireless signals, transmitting wireless signals, and simultaneously receiving and transmitting wireless signals.

Referring to fig. 4, fig. 4 is a schematic diagram of a third structure of a wearable electronic device according to an embodiment of the application. To further increase the isolation between the first antenna 101 and the second antenna 102, the wearable electronic device 10 of the embodiment of the present application may further include the spacer 1000. The spacer 1000 is located between the first antenna 101 and the second antenna 102, and the spacer 1000 is grounded to improve the isolation between the first antenna 101 and the second antenna 102.

The spacer 1000 may be disposed on the circuit board 300, and the spacer 1000 may have a certain height, so that the spacer 1000 may be located between the first bracket 500 and the second bracket 600 at the same time, and further the spacer 1000 may block a wireless signal transmitted by the first antenna 101 disposed on the first bracket 500 from being diffracted into an area where the second bracket 600 is located, or may block a wireless signal transmitted by the second antenna 102 disposed on the second bracket 600 from being diffracted into an area where the first bracket 500 is located.

Of course, the spacer 1000 may not be provided on the circuit board 300. For example, the wearable electronic device 10 may further include a third bracket disposed between the first and second brackets 500 and 600, the spacer 1000 is disposed on the third bracket, and the spacer 1000 may be also disposed between the first and second antennas 101 and 102.

For another example, please refer to fig. 5, fig. 5 is a schematic diagram of a fourth structure of a wearable electronic device according to an embodiment of the present application. The spacer 1000 may include a first end 1100 and a second end 1200 disposed opposite to each other, the first end 1100 and the second end 1200 are located between the first antenna 101 and the second antenna 102, and the first end 1100 and the second end 1200 may be connected to two opposite sides of the bezel 200, respectively, to achieve a fixed connection of the spacer 1000 and the bezel 200. The first end 1100 and the second end 1200 of the spacer 1000 are respectively connected to two sides of the frame 200, the spacer 1000 divides the circuit board 300 into two independent areas, the wireless signal transmitted by the first antenna 101 cannot be diffracted to the area where the second antenna 102 is located, the wireless signal transmitted by the second antenna 102 cannot be diffracted to the area where the first antenna 101 is located, and the isolation between the first antenna 101 and the second antenna 102 is better.

It is understood that the spacer 1000 may be electrically connected to the middle plate 100 to be grounded through the middle plate 100. The middle plate 100 may form a common ground of the wearable electronic device 10, and the spacer 1000 is provided with a grounding point, where the grounding point is electrically connected with the middle plate 100 through a grounding spring sheet, a grounding wire, a grounding foam, and the like, so as to realize grounding of the spacer 1000.

One grounding point may be provided on the spacer 1000, or two grounding points may be provided to further enhance the isolation effect of the spacer 1000. Specifically, the first end 1100 of the spacer 1000 may be provided with a first grounding point, the second end 1200 may be provided with a second grounding point, and the first grounding point and the second grounding point may be respectively electrically connected with the middle plate 100, so that the spacer 1000 may further reduce interference between a signal transmitted by the first antenna 101 and a signal transmitted by the second antenna 102, and improve isolation between the first antenna 101 and the second antenna 102.

It will be appreciated that the spacer 1000 may be grounded in other ways as well. For example, the circuit board 300, the rear cover 400, or the frame 200 may also be provided with a grounding terminal, and the grounding point on the spacer 1000 is electrically connected to the corresponding grounding terminal, so that the spacer 1000 may be grounded through the circuit board 300, the rear cover 400, the frame 200, and other components. Note that, the grounding mode of the spacer 1000 is not limited in the embodiment of the present application.

In the wearable electronic device 10 according to the embodiment of the present application, in addition to the first antenna 101 and the second antenna 102 provided on the first bracket 500 and the second bracket 600, other antenna radiators may be provided on the frame 200. Referring to fig. 6, fig. 6 is a schematic diagram of a fifth structure of a wearable electronic device according to an embodiment of the application.

The frame 200 may include a first side 210 and a second side 220, the first side 210 may have a first metal branch 201 formed thereon, the second side 220 may have a second metal branch 202 formed thereon, and both the first metal branch 201 and the second metal branch 202 may be used to transmit wireless signals.

It is understood that the first side 210 and the second side 220 may be two oppositely disposed sides, and the first side 210 and the second side 220 may also be two oppositely disposed sides.

For example, the frame 200 may include a first side 210 and a second side 220 disposed opposite to each other, and a third side 230 and a fourth side 240 disposed opposite to each other, the first side 210, the third side 230, the second side 220, and the fourth side 240 being sequentially connected. The first side 210 may be formed with a first metal branch 201, and the second side 220 may be formed with a second metal branch 202, and since the first side 210 and the second side 220 are disposed opposite to each other, the distance between the first metal branch 201 and the second metal branch 202 is further, so that the isolation between the first metal branch 201 and the second metal branch 202 may be improved.

It is understood that the first side 210 and the second side 220 may be sides other than the sides of the frame 200 to which the wearing part 900 is attached. That is, the wearing part 900 may be connected to the third side 230 and the fourth side 240 of the bezel 200.

Wherein the first metal branch 201 may be formed by slotting on the first side 210 and the second metal branch 202 may be formed by slotting on the second side 220. Specifically, the first side 210 of the frame 200 may be provided with a first slit 301, and the first slit 301 may form the first metal branch 201 on the first side 210; a second slit 302 may be disposed on the second side 220 of the bezel 200, and the second slit 302 may form the second metal knob 202 on the second side 220.

The first slit 301 may be rectangular in shape, and at this time, a metal portion formed by the rectangular first slit 301 is still integrally connected with the middle plate 100, so that the metal portion may form the first metal branch 201, a first space 401 may be disposed on the middle plate 100 near the first side 210 of the frame 200, and the first space 401 communicates with the rectangular first slit 301 so that the metal portion may form the first metal branch 201.

Of course, the shape of the first slit 301 may be a U shape, and the first slit 301 of the U shape may directly form the first metal branch 201 on the first side 210 of the frame 200.

The second slit 302 may be rectangular in shape, where a metal portion formed by the rectangular second slit 302 is still integrally connected with the middle plate 100, and in order to form the second metal branch 202 on the metal portion, a second space 402 may be disposed on the middle plate 100 near the second side 220 of the frame 200, where the second space 402 communicates with the rectangular second slit 302 so that the metal portion may form the second metal branch 202.

Of course, the second slit 302 may be U-shaped, and the second slit 302 of the U-shape may directly form the second metal branch 202 on the second side 220 of the frame 200.

The shapes of the first slit 301 and the second slit 302 are not limited to the above description, and the shapes of the first slit 301 and the second slit 302 are not limited in the embodiment of the present application, and the formation modes of the first metal branch 201 and the second metal branch 202 are not limited in the embodiment of the present application.

It will be appreciated that, to ensure structural stability of the wearable electronic device 10, the first and second spaces 401 and 402 may be filled with a non-metallic material, so that the bezel 200 and the middle plate 100 are completely connected. To improve the integrity of the external appearance of the wearable electronic device 10, the first slit 301 and the second slit 302 may be filled with a nonmetallic material having a color consistent with the external appearance of the bezel 200.

According to the wearable electronic device 10 provided by the embodiment of the application, the first gap 301 is formed on the first side 210 of the frame 200 to form the first metal branch 201, the second gap 302 is formed on the second side 220 of the frame 200 to form the second metal branch 202, and the first metal branch 201 and the second metal branch 202 are both used for transmitting wireless signals, so that on one hand, the distance between the first metal branch 201 and the second metal branch 202 is far, the isolation between the first metal branch 201 and the second metal branch 202 can be improved, the performance of an antenna system of the wearable electronic device 10 is improved, and the stability of communication is ensured; on the other hand, the first metal branch 201 and the second metal branch 202 realize multiplexing of the frame 200, and do not occupy the space of the wearable electronic device 10 additionally, so that the structure of the wearable electronic device 10 can be simplified.

It is understood that, in order to form the first metal branch 201 and the second metal branch 202 on the frame 200, the frame 200 may be made of metal.

The radio frequency circuit on the circuit board 300 may be electrically connected to the first metal branch 201 and the second metal branch 202, and a third signal source and a fourth signal source may also be disposed on the circuit board 300, where the radio frequency circuit on the circuit board 300 may feed a wireless signal into the first metal branch 201 through the third signal source and feed a wireless signal into the second metal branch 202 through the fourth signal source, so that the first metal branch 201 and the second metal branch 202 may transmit a wireless signal. The third signal source and the fourth signal source may each be used to generate at least one of a 4G signal, a 5G signal, a WIF signal, and a GPS signal.

The third signal source may include a third feeding end and a third grounding end, and the wireless signal is fed into the first metal branch 201 from the third feeding end and then is grounded from the third grounding end to form a signal loop, so that the first metal branch 201 transmits the wireless signal. The fourth signal source may also include a fourth feeding end and a fourth grounding end, and the wireless signal is fed into the second metal branch 202 from the fourth feeding end and then is grounded from the fourth grounding end to form a signal loop, so that the second metal branch 202 transmits the wireless signal. And, the third ground terminal, the fourth ground terminal may be disposed at the rear cover 400, the circuit board 300, the bezel 200, the middle plate 100, etc. The specific setting positions of the feed point and the grounding point can be selected according to the frequency band of the wireless signal actually transmitted by the first metal branch 201 and the second metal branch 202.

The circuit board 300 may further be provided with a third tuning circuit 330, the first metal branch 201 may be connected to the third tuning circuit 330, the third tuning circuit 330 may at least include a first path and a second path, when the first path is turned on, the first metal branch 201 may be used to transmit a wireless signal in the first frequency band, and when the second path is turned on, the first metal branch 201 may be used to transmit a wireless signal in the second frequency band.

It can be appreciated that the third tuning circuit 330 may also include a plurality of paths, taking the transmission of the 5G signal as an example, the frequency range of the 5G signal includes N78, N79 and N41, and the impedance of the first metal branch 201 is changed by the third tuning circuit 330 so that the third tuning circuit 330 may include three paths, and the three paths correspondingly transmit the wireless signals in the N78, N79 and N41 frequency ranges, so that the first metal branch 201 can meet the transmission requirements of the N78, N79 and N41 frequency ranges of the 5G signal of the wearable electronic device 10.

The circuit board 300 may further be provided with a fourth tuning circuit 340, the second metal branch 202 may also be connected to a fourth tuning circuit 340, the fourth tuning circuit 340 may also include a plurality of paths, for example, a 4G signal is transmitted, a frequency range of the 4G signal includes a low frequency band, an intermediate frequency band, and a high frequency band, and the impedance of the second metal branch 202 is changed by the fourth tuning circuit 340 so that the fourth tuning circuit 340 may include three paths.

Specifically, referring to fig. 7, fig. 7 is a circuit schematic of the fourth tuning circuit shown in fig. 6. The fourth tuning circuit 340 may include a first path 341, a second path 342, and a third path 343. When the first via 341 is in electrical communication with the second metal branch 202, the second metal branch 202 may transmit a 4G low frequency signal. Second metal branch 202 may transmit a 4G intermediate frequency signal when second via 342 is in electrical communication with second metal branch 202. When the third via 343 is in electrical communication with the second metal branch 202, the second metal branch 202 may transmit a 4G high frequency signal. Furthermore, the second metal branch 202 may meet the requirements of the wearable electronic device 10 for transmitting the middle, low and high frequency bands of the 4G signal.

It can be appreciated that the above third tuning circuit 330 and fourth tuning circuit 340 may be implemented by using various switches and resistors and/or inductors and/or capacitors, for example, may be a single-pole single-throw switch, a single-pole double-throw switch, a single-pole three-throw switch and a single-pole four-throw switch, and the switches in the third tuning circuit 330 and fourth tuning circuit 340 are respectively connected with capacitors with different capacitance values or resistors with different resistance values, so as to change the impedance of the first metal branch 201 and the second metal branch 202, so that the first metal branch 201 and the second metal branch 202 transmit more wireless signals with different frequency bands, thereby meeting the requirements of the wearable electronic device 10 for wireless signals with various frequency bands.

It can be understood that the first metal branch 201 may also be connected to a plurality of third tuning circuits 330, and transmission of signals in different frequency bands may also be achieved through mutual cooperation between the plurality of third tuning circuits 330. The second metal branch 202 may also be connected with a plurality of fourth tuning circuits 340, and transmission of signals in different frequency bands may also be achieved through mutual cooperation between the fourth tuning circuits 340.

Illustratively, when the second metal branch 202 is used for transmitting the low-frequency wireless signal, the intermediate-frequency wireless signal, and the high-frequency wireless signal of the 4G signal, the length of the second metal branch 202 is longer, and the range of the adjustable amplitude of the third tuning circuit 330 is limited. Thus, the second metal stub 202 may connect two third tuning circuits 330. As shown in fig. 6, the two third tuning circuits 330 are electrically connected to different parts of the second metal branch 202, and by matching the two third tuning circuits 330, the grounding point of the second metal branch 202 can be changed, and each third tuning circuit 330 can be connected to a different channel, so that the second metal branch 202 can transmit 4G signals in different frequency bands.

It is understood that the first metal branch 201 may also transmit a low frequency wireless signal, an intermediate frequency wireless signal, and a high frequency wireless signal of the 4G signal. Of course, the first metal branch 201 and the second metal branch 202 may also transmit the 5G signals of the N78, N79 and N41 frequency bands; GPS signals of L1, L2 and L5 frequency bands and the like can also be transmitted. The frequency band of the signal transmitted by the first metal branch 201 and the second metal branch 202 is not limited in the embodiment of the present application.

The first side 210 and the second side 220 of the frame 200 may further have a plurality of metal branches formed thereon. Referring to fig. 8, fig. 8 is a schematic diagram of a sixth structure of a wearable electronic device according to an embodiment of the application.

Illustratively, two first slits 301 are disposed on the first side 210 of the frame 200 at intervals to form two first metal branches 201 on the first side 210. The free ends of the two first metal branches 201 may be oriented in the same direction, i.e., the free ends of the two first metal branches 201 are not opposite to each other. At this time, the distance between the free ends of the two first metal branches 201 is far, and the isolation between the two first metal branches 201 is improved.

Of course, the directions of the free ends of the two first metal branches 201 may also be different, that is, the free ends of the two first metal branches 201 are opposite to each other, the distance between the free ends of the two first metal branches 201 is relatively short, the mutual interference between the two first metal branches 201 is relatively large, at this time, a spacer 1000 may be disposed between the free ends of the two first metal branches 201, and the spacer 1000 is grounded to improve the isolation between the two first metal branches 201.

It is understood that each first metal stub 201 may also be used to transmit at least one of a 4G signal, a 5G signal, a WIF signal, and a GPS signal. When two first metal branches 201 are used to transmit signals of the same frequency band, multiple input multiple output transmission of wireless signals can be achieved. For example, two first metal branches 201 are used for 5G signals, and 2×2 MIMO transmission of 5G signals can be implemented.

It should be noted that, in the embodiment of the present application, other numbers of the first metal branches 201 and the second metal branches 202 may be further disposed on the frame 200 of the wearable electronic device 10, and the number of the metal branches is not limited in the embodiment of the present application.

The wearable electronic device 10 according to the embodiment of the present application may further include a third antenna 103, please refer to fig. 9, fig. 9 is a seventh structural schematic diagram of the wearable electronic device provided by the embodiment of the present application. The third antenna 103 is disposed on the wearing part 900, and the third antenna 103 may be used for transmitting 5G non-millimeter wave signals or 5G millimeter wave wireless signals.

It will be appreciated that third antenna 103 may be a millimeter wave antenna, which may be, for example, a patch type antenna, the plurality of patch type antennas forming a millimeter wave patch array antenna. For a patch array antenna formed by a plurality of patch antennas, the number and arrangement of patch antennas can be changed according to the need for 5G wireless signal transmission and reception. The millimeter wave antenna may also be a slot type antenna, for example. The plurality of slot antennas form a millimeter wave slot array antenna. The number and arrangement modes of the slot type antennas can be changed according to the requirement for 5G wireless signal receiving and transmitting.

The 5G NR according to the 3gpp TS 38.103 (3 rd Generation Partnership Project third generation partnership project) protocol mainly uses two frequencies: FR1 band and FR2 band. The frequency range of the FR1 frequency band is 450 MHz-6 GHz, which is also called sub-6GHz frequency band; the frequency range of the FR2 band is 24.25 GHz-52.6 GHz, commonly known as millimeter Wave (mm Wave). The 3GPP Release 15 Release specifications currently specify the 5G millimeter wave band: n257 (26.5-29.5 GHz), N258 (24.25-27.5 GHz), N261 (27.5-28.35 GHz) and N260 (37-40 GHz).

For handset antenna designs, sub-6GHz from 1G to 5G is basically a growth in volume, for example: the increase in the number of frequency bands and the number of antennas, i.e. the refinement and optimization of the antenna design, however, the millimeter-band antenna design is a qualitative jump for mobile antennas, for example: although the millimeter wave array antenna has different design structures and directions, the current mainstream and proper directions of the millimeter wave antenna array of the mobile phone are generally based on a phased array (phasedantennaarray) mode, and the implementation modes of the phased array millimeter wave antenna array mainly can be divided into three modes, namely: the Antenna array is located on a system motherboard (AOB for short), the Antenna array is located in a package of a chip (Antenna in Package for short, AIP for short), and the Antenna array and the radio frequency chip form a module (Antenna in Module for short, AIM) which has advantages, but is more realized in an AIP or AIM mode at present, so that the Antenna array has higher transmission gain for better beam forming to achieve the wider space coverage, and is generally designed by Antenna types (such as patch array antennas or slot array antennas) with complementary transmission beams, and is based on proper design of Antenna feed points, so as to achieve dual polarization (vertical and horizontal polarization) coverage to increase wireless communication connection capability, and the radio frequency chip is welded upside down, so that Antenna feed lines are shortened as much as possible, high path loss caused by high-frequency transmission is reduced, and the millimeter wave Antenna array has higher transmission gain to achieve better transmission power and coverage strength. Antennas are typically in the form of patch array antennas or slot array antennas.

The material of the wearing part 900 may include metal or plastic, and the material of the wearing part 900 may be set according to actual needs. The wavelength range corresponding to the millimeter wave is 1 mm-10 mm. Because the wavelength of millimeter wave is shorter, receive the hindrance easily in the transmission process, through arranging a plurality of millimeter wave antenna unit intervals, strengthened the transmission performance of third antenna 103 effectively, through setting up the millimeter wave antenna in wearing portion 900, can satisfy the demand of 5G millimeter wave frequency channel.

It will be appreciated that the wearable electronic device 10 may further include a fifth signal source electrically connected to the third antenna 103, and the fifth signal source may also be used to generate at least one of a WIFI signal, a GPS signal, a 4G signal, and a 5G signal.

The wearable electronic device provided by the embodiment of the application is described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application and are provided to aid in the understanding of the present application. Meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims (8)

1. A wearable electronic device, comprising:

a middle plate forming a common ground;

the frame is arranged at the periphery of the middle plate and is connected with the middle plate;

the circuit board is arranged on the middle plate, and a first bracket and a second bracket are arranged on one surface, away from the middle plate, of the circuit board at intervals;

the first antenna is arranged on the first bracket, is arranged along the first direction and is electrically connected with the middle plate to realize grounding;

the second antenna is arranged on the second bracket, is arranged along the second direction and is electrically connected with the middle plate to realize grounding; and

the isolating piece is positioned between the first bracket and the second bracket, extends along the first direction and comprises a first end and a second end which are oppositely arranged, and the first end and the second end are respectively connected with two opposite side edges of the frame;

the first end and the second end are electrically connected with the middle plate to realize grounding so as to improve isolation between the first antenna and the second antenna.

2. The wearable electronic device of claim 1, wherein the circuit board comprises a first end and a second end disposed opposite to each other, the first support being disposed at the first end and the second support being disposed at the second end.

3. The wearable electronic device of claim 1, wherein a first grounding point is disposed on the first end, a second grounding point is disposed on the second end, and the first grounding point and the second grounding point are respectively electrically connected to the middle plate to achieve grounding of the spacer.

4. The wearable electronic device of claim 1, wherein the first antenna and the second antenna are each configured to transmit WIFI signals to enable multiple-input multiple-output transmission of WIFI signals.

5. The wearable electronic device of any of claims 1-4, wherein the bezel comprises:

the first side is provided with a first gap so as to form a first metal branch on the first side, and the first metal branch is used for transmitting wireless signals; a kind of electronic device with high-pressure air-conditioning system

The second side is provided with a second gap so as to form a second metal branch on the second side, and the second metal branch is used for transmitting wireless signals.

6. The wearable electronic device of claim 5, wherein two first slits are disposed at intervals on the first side edge, so as to form two first metal branches on the first side edge, and the directions of the free ends of the two first metal branches are the same, so as to improve the isolation between the two first metal branches.

7. The wearable electronic device of claim 6, wherein both of the first metal branches are used to transmit 5G signals to enable multiple-input multiple-output transmission of 5G signals.

8. The wearable electronic device of claim 5, further comprising two tuning circuits, each of the two tuning circuits being electrically connected to the second metal branch, each tuning circuit being configured to switch on a different path so that the second metal branch transmits a 4G wireless signal in a different frequency band.