CN216624558U - Wearable equipment - Google Patents

Abstract

The application provides a wearable device, includes: the antenna comprises a metal middle frame, a first antenna and a second antenna, wherein a first feeding point is arranged on the metal middle frame and used for feeding the first antenna and the second antenna, the first antenna is used for transmitting cellular signals, the second antenna is used for transmitting positioning signals, and a feeding circuit of the first antenna and a feeding circuit of the second antenna are arranged in the metal middle frame; the first end of the extractor is connected with the first feeding point, the second end of the extractor is connected with the feeding circuit of the first antenna, the third end of the extractor is connected with the feeding circuit of the second antenna, a first filtering path is arranged between the first end and the second end and used for filtering signals except the cellular signals, a second filtering path is arranged between the first end and the third end and used for filtering signals except the positioning signals.

Description

Wearable equipment

Technical Field

The present application relates to the field of electronic devices, and more particularly, to a wearable device.

Background

Along with wearable technology constantly develops, products such as intelligent wrist-watch, bracelet receive liking of more and more people. The integration of functions of wearing products is also increasing. For example, a wearable watch integrates a cellular call, a bluetooth connection, a Wi-Fi download, a GPS positioning function, and the like, and these functions are all realized by depending on an antenna. At present, most wearable devices adopting an all-metal middle frame use the metal middle frame as a radiator of an antenna to realize the transceiving of various signals.

In the related art, in order to avoid the influence on the performance of the GPS antenna when the LTE radio frequency switch is switched, a widely adopted method is to stabilize the carrier-to-noise ratio of the GPS by adding a GPS resonant network in the LTE main path. However, although the performance of the GPS can be guaranteed, the method can also greatly affect the LTE band3 frequency band, and in some scenarios (for example, indoors, high-rise buildings, and the like), the signals of the band3 frequency band are weak, which may cause a network connection failure and the like of the wearable device, thereby affecting the user experience.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a wearable device, including a metal middle frame, where a first feeding point is disposed on the metal middle frame, the first feeding point is used to feed a first antenna and a second antenna, the first antenna is an antenna used to transmit a cellular signal, the second antenna is an antenna used to transmit a positioning signal, and a feeding circuit of the first antenna and a feeding circuit of the second antenna are disposed inside the metal middle frame; the first end of the extractor is connected with the first feeding point, the second end of the extractor is connected with the feeding circuit of the first antenna, the third end of the extractor is connected with the feeding circuit of the second antenna, a first filtering path is arranged between the first end and the second end and used for filtering signals except the cellular signals, a second filtering path is arranged between the first end and the third end and used for filtering signals except the positioning signals.

Optionally, a second feeding point is further disposed on the metal middle frame, the second feeding point is a feeding point of a third antenna, and the third antenna is used for transmitting WiFi signals and/or bluetooth signals.

Optionally, the first feeding point and the second feeding point are disposed at diagonal positions of the metal middle frame.

Optionally, the positioning signal comprises at least one of a GPS signal, a glonass signal, and a beidou signal.

Optionally, the cellular signal is a cellular signal of an LTE system.

Optionally, the extractor is a surface acoustic wave filter.

The wearable equipment that this application embodiment provided utilizes the metal center as the radiation theme of antenna, through set up the extractor between honeycomb signal and positioning signal's feed circuit, utilizes the frequency-selective characteristic of extractor, filters honeycomb signal and positioning signal respectively, can make honeycomb antenna and positioning antenna carry out compatible design, has avoided sacrificing the problem of honeycomb signal performance because of priority consideration positioning signal's performance among the prior art to user experience has been promoted.

Drawings

FIG. 1 is a schematic structural diagram of a wearable device in the related art

Fig. 2 is a schematic structural diagram of an LTE radio frequency link in the related art.

Fig. 3 is a schematic structural diagram of the GPS antenna in fig. 1.

Fig. 4A is a schematic structural diagram of a wearable device in the related art.

Fig. 4B is a schematic diagram of an antenna structure of the wearable device in fig. 4A.

Fig. 5A is a schematic structural diagram of another wearable device in the related art.

Fig. 5B is a schematic diagram of an antenna structure of the wearable device in fig. 5A.

Figure 6 is a simulation of the solution of figure 4B with the addition of the insertion loss of the GPS band-pass resonant network.

Figure 7 is a simulation of the solution of figure 5B with the addition of the insertion loss of the GPS band-pass resonant network.

Fig. 8 is a simulation plot of the effect of different values of inductance and capacitance on bandwidth.

Fig. 9 is a schematic structural diagram of a wearable device provided in an embodiment of the present application.

Fig. 10 is a schematic view of the extractor of fig. 9.

Fig. 11A is a schematic diagram of the transmission characteristics of the second filtering path of the extractor of fig. 9.

Fig. 11B is a partially enlarged view of a dotted line portion in fig. 11A.

Fig. 12A is a schematic diagram of the transmission characteristics of the first filtering path of the extractor of fig. 9.

Fig. 12B is a partially enlarged view of a portion of a dashed line frame 121 in fig. 12A.

Fig. 12C is a partially enlarged view of a portion of the dashed line frame 122 in fig. 12A.

Fig. 13 is a schematic diagram of the extractor of fig. 9 for isolation between GPS and LTE.

Fig. 14 is a simplified external view of a wearable 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 drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Along with the continuous development of wearable technique, wearable equipment such as intelligent wrist-watch, bracelet receive more and more people's liking. Wearable products are also increasingly integrating functionality. For example, functions such as cellular phone call, Bluetooth (BT) connection, WiFi download, Near Field Communication (NFC), and positioning are integrated in the wearable device. The antenna is a main electronic component for realizing the above functions, and is also one of indispensable electronic components of the wearable device.

But due to the small size of the wearable device, it is difficult to realize the orderly arrangement of the 3G/4G/5G antenna, the positioning antenna, the WiFi antenna, the NFC antenna and the BT antenna and the good antenna performance in the limited space inside the wearable device. Therefore, in the related art, the frame of the wearable device is widely adopted as the radiator of each type of antenna, and the above-mentioned various communication modes can be realized in a limited space by reasonably configuring the grounding point on the frame and the feeding point, the feeding circuit and the matching circuit of each type of antenna. Such an antenna design with a frame as the radiator of each type of antenna may be referred to as a co-body antenna.

The following describes a wearable device with a common antenna design in detail with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a wearable device 10 in the related art, and it should be noted that fig. 1 only shows an LTE antenna for implementing a cellular call and a GPS antenna for supporting positioning.

The wearable device 10 in fig. 1 includes a center 11 and a PCB board 12. The middle frame 11 is a part of the housing of the wearable device 10, and meanwhile, the middle frame 11 is also a radiator of the LTE antenna and the GPS antenna. It is understood that the middle frame 11 is required to be a conductor as a radiator of the antenna, and may be a metal middle frame, or a middle frame with a metal coating, for example, or, in some implementations, the middle frame 11 may be made of a non-metal material capable of conducting electricity.

As shown in fig. 1, the middle frame 11 includes a GPS antenna feeding point 111 and an LTE antenna feeding point 112 provided in the 10 o ' clock direction and the 5 o ' clock direction, and a grounding point 113 provided in the 7 o ' clock direction. Meanwhile, the PCB 12 is respectively provided with a GPS feeding circuit and an LTE feeding circuit, and is respectively connected to the GPS antenna feeding point 111 and the LTE antenna feeding point 112 on the middle frame 11 through elastic pieces, so that the GPS feeding circuit and the LTE feeding circuit can receive and/or transmit GPS signals and LTE signals by using the middle frame 11.

With continued reference to fig. 1, in the scenario shown in fig. 1, the LTE antenna may be considered an environmental ground point for the GPS antenna when designing the GPS antenna. That is, the LTE antenna feeding point 112 on the middle frame 11 can be considered as one grounding point L of the GPS antenna.

The radio frequency link of an LTE antenna is as shown in fig. 2, so for a GPS antenna the antenna schematic at this point becomes the form as shown in fig. 3. As can be seen from fig. 3, a radio frequency switch is included on the ground pin L, and when the cellular network is in operation, the radio frequency switch switches states to perform network search. When the rf switch is switched, the impedance of the ground pin L changes with the switching of the switch. Because the ground pin L can be regarded as a ground pin of the GPS antenna, the performance of the GPS antenna changes with the switching of the radio frequency switch, which is specifically expressed as fluctuation of the carrier-to-noise ratio (CN value) of the GPS signal with the switching of the LTE frequency band.

Therefore, in order to avoid the above problem, a method adopted in the current related art is by adding a GPS resonant network in the LTE main path. Fig. 4 and 5 show two solutions in this related art. Fig. 4A and 5A are schematic structural diagrams of a wearable device in the related art, and fig. 4B and 5B are schematic diagrams of corresponding antenna schemes.

In the above scheme, the GPS/WIFI/BT antenna is taken as a three-in-one antenna, the LTE antenna is designed independently, and the three-in-one antenna and the GPS antenna share the middle frame to be taken as a radiating body.

In the first scheme as shown in fig. 4B, the feed point of the GPS/WIFI/BT antenna is set at 11 o' clock direction of the middle frame, and is connected with the GPS/WIFI/BT matching network; the LTE antenna feed point is placed in the 5 o' clock direction and is connected with the LTE matching network; setting the antenna lower place at the position of 7 o' clock direction; and a GPS band-pass resonance network is introduced into the LTE main path to stabilize the CN value of the GPS.

In a second scheme shown in fig. 5B, the feeding point of the GPS/WIFI/BT antenna is set at 1 o' clock direction of the middle frame; the LTE antenna feed point is placed in the 7 o' clock direction; setting two antenna lower points at the positions of 5 o 'clock direction and 10 o' clock direction; and a GPS band-pass resonance network is introduced into the LTE main path to stabilize the CN value of the GPS.

In both of the above schemes, it can be seen that no matter how the antenna feed point varies, it introduces a GPS resonance to ground network in the LTE main path to stabilize the GPS state. The GPS band-pass resonant network can be a GPS frequency band low-impedance module, and is arranged in front of a radio frequency switch of an LTE main path, so that the overall resistance value of a grounding pin L is a stable value when the radio frequency switch is switched, and the stable performance of a GPS antenna is ensured.

Although the above two schemes in the related art can solve the influence of the LTE radio frequency switch switching on the GPS state to some extent, there are still many problems.

The GPS band-pass to ground resonant network is added in the LTE main path, although the problem of CN value jitter of the GPS can be solved. However, the added band-pass resonant network can force the GPS antenna to go below the ground, which causes the layout of the GPS antenna to be limited, which affects the current distribution of the GPS antenna, thereby changing the directional pattern of the GPS antenna, so that the obtained GPS performance is not optimal in some cases.

The general civil GPS positioning system widely uses the L1 band, the signal frequency is 1575.42MHz, and the frequency of the LTE band3 band is 1710-1785 MHz. That is to say, the frequency point of the GPS is very close to the LTE band3 frequency band, and adding the GPS band to the ground network in the LTE main path will have a large influence on the band3 frequency band. This problem is illustrated in detail below with reference to the accompanying drawings.

Fig. 6 shows the insertion loss of the band3 frequency band after the GPS band pass resonant network is added in the solution shown in fig. 4. As can be seen from FIG. 6, at the 1710MHz frequency of band3, the insertion loss is about-4.2587 dB.

Fig. 7 shows the insertion loss of the band3 frequency band after the GPS band pass resonant network is added in the scheme shown in fig. 5. As can be seen from fig. 7, even if the resonant network is biased to a low frequency, the insertion loss is still over-4 dB at the 1710MHz frequency of band 3.

As can be seen in fig. 6 and 7, in both of the foregoing schemes, the addition of a GPS band pass resonant network sacrifices the performance of LTEband3 in the case of a preference for GPS performance. For wearable equipment with a cellular communication function, the band3 is a frequency band used by mobile users more, and in scenes such as indoors, high-rise buildings and downstairs, double-sided shielding and the like, a band3 frequency band signal is weak, which easily causes the wearable equipment to have situations such as network connection failure and call interruption, which seriously affects user experience.

Therefore, in the related art, in order to minimize the influence of the GPS band-pass-to-ground resonant network on the LTEband3 frequency band, it is necessary to minimize the bandwidth of the band-pass resonant network. In some implementations, the GPS band-pass-to-ground resonant network may be a capacitor-inductor filter module connected in series with each other, and it can be obtained from theoretical calculation that the smaller the ratio L/C of the inductor to the capacitor, the narrower the GPS resonant bandwidth.

Fig. 8 shows simulation curves of the influence of different values of inductance and capacitance on the bandwidth under the condition that the resonant network frequency points are the same. In fig. 8, the horizontal axis represents frequency and the vertical axis represents loss. In fig. 8, three curves from top to bottom are frequency versus loss for inductance values of 1nH, 6nH, and 10.2nH, and corresponding capacitance values of 10.2pF, 1.7pF, and 1pF, respectively.

As can be seen from fig. 8, the bandwidth when L is 10.2nH and C is 1pF is significantly narrower than the bandwidth when L is 1nH and C is 10.2 pF. At the 1710MHz frequency of band3, the insertion loss is-15.7576 dB for L-10.2 nH and C-1 pF, and is smaller than-35.8139 dB for L-1 nH and C-10.2 pF. That is, the narrower the GPS resonant bandwidth, the less the GPS band-pass to ground resonant network affects the LTEband3 frequency band.

However, at the same time, the resonant network frequency point is easily affected by the precision of the matching device to generate deviation, which affects the consistency of production. It will be appreciated that the simulation results in the case of an ideal device are shown in fig. 8. In actual production, electronic devices have certain poor precision. The use of a narrower bandwidth means a larger inductance value and a smaller capacitance value. For example, in an ideal case, the resonant frequency is 1575MHz when L is 20.4nH and C is 0.5 pF. The manufacturing tolerance is typically about ± 5% for L ═ 20.4nH, and about ± 0.1pF for a capacitance of 0.5 pF. Therefore, considering the actual tolerance situation, when the maximum tolerance combination is used, there are the following situations:

(1) 20.4nH (21.42nH) with a tolerance of + 5% and 0.5pF (0.6pF) with a tolerance of +0.1pF, the resonance frequency f is 1.4 GHz.

(2) 20.4nH (19.38nH) with a tolerance of-5% and 0.5pF (0.4pF) with a tolerance of-0.1 pF, the resonance frequency f is 1.81 GHz.

(3) 20.4nH (21.42nH) with a tolerance of + 5% and 0.5pF (0.4pF) with a tolerance of-0.1 pF, the resonance frequency f is 1.72 GHz.

(4) 20.4nH (19.38nH) with a tolerance of-5% and 0.5pF (0.6pF) with a tolerance of +0.1pF, the resonance frequency f being 1.48 GHz.

From the case of 4 shown above, a relatively large deviation of the resonant frequency occurs after taking into account the device tolerance. For example, in the case (3), the resonance point falls right near 1720MHz, which has a great influence on the LTE band3 frequency band, and at this time, the problem that the frequency band switching of LTE has an influence on the CN value of GPS may not be solved.

In order to solve the above problem, embodiments of the present application provide a wearable device, which is described in detail below with reference to the accompanying drawings.

Fig. 9 shows a schematic structural diagram of a wearable device provided in an embodiment of the present application, where an apparatus 90 in fig. 9 includes:

a metal middle frame 91 on which a first feeding point 911 for feeding the first antenna 92 and the second antenna 93 is disposed.

The position of the first feeding point 911 on the metal middle frame 91 is not particularly limited in the embodiment of the present application, and may be selected according to the structure of the metal middle frame 91 or according to the requirement of the antenna design, for example, in the embodiment shown in fig. 9, the first feeding point 911 is arranged in the 7 o' clock direction of the metal middle frame 91.

The first antenna 92 is an antenna for transmitting cellular signals, and the second antenna 93 is an antenna for transmitting positioning signals. A first feeding circuit 921 of the first antenna 92 and a second feeding circuit 931 of the second antenna 93 are provided inside the metal bezel 91;

an extractor 94, a first end 941 of the extractor 94 is connected to the first feeding point 911, a second end 942 of the extractor 94 is connected to the first feeding circuit 921 of the first antenna 92, a third end 943 of the extractor is connected to the second feeding circuit 931 of the second antenna 93, a first filtering path is disposed between the first end 941 and the second end 942 for filtering out signals other than the cellular signal, and a second filtering path is disposed between the first end 941 and the third end 942 for filtering out signals other than the positioning signal.

The wearable equipment that this application embodiment provided utilizes the metal center as the radiation theme of antenna, through set up the extractor between honeycomb signal and positioning signal's feed circuit, utilizes the frequency-selective characteristic of extractor, filters honeycomb signal and positioning signal respectively, can make honeycomb antenna and positioning antenna carry out compatible design, has avoided sacrificing the problem of honeycomb signal performance because of priority consideration positioning signal's performance among the prior art to user experience has been promoted.

As described above, in addition to the cellular communication and satellite positioning capabilities, the current wearable devices also need to have communication methods such as WiFi and/or bluetooth. Therefore, to meet the demand for WiFi and/or bluetooth communication, embodiments of the present application provide a wearable device that further includes a WiFi and/or bluetooth antenna.

Referring to fig. 9, in some embodiments, a second feeding point 912 is further disposed on the metal middle frame 91, where the second feeding point 912 is a feeding point of a third antenna 95, and the third antenna is a WiFi and/or bluetooth antenna, and is used for transmitting WiFi signals and/or bluetooth signals.

It should be noted that in the antenna design of the wearable device, the interference between the WiFi signal and the cellular signal needs to be considered. Taking the example that the cellular signal is an LTE signal, the frequency bands used in the LTE communication technology may include a frequency Band 38(Band 38, which may also be referred to as B38), a frequency Band 39, a frequency Band 40, a frequency Band 41, and the like. Wherein, the coverage range of the frequency band 40 is 2300 and 2400MHz, and the coverage range of the frequency band 41 is 2496 and 2690 MHz. While the frequency range in which the 2.4G band is typically used in WiFi signals is about 2400-. From this, it can be seen that the lower frequency part and the higher frequency part of the 2.4G band used by WIFI are close to the frequencies of the LTE band 40 and the LTE band 41, respectively. Therefore, when the WIFI and the LTE work simultaneously, adjacent channel interference is easily generated between the two.

Therefore, when designing the antenna, it is necessary to increase the isolation between the WiFi and the cellular signals as much as possible. In some embodiments, as shown in fig. 9, the second feeding point 912 can be placed diagonally to the first feeding point 911 to maximize the distance between the two feeding points, which can increase the isolation between WiFi and cellular signals. And, design wiFi antenna and location antenna separately, can optimize and promote the performance of wiFi antenna in a flexible way.

In some embodiments, a plurality of grounding points, such as the first grounding point 913 and the second grounding point 914 shown in fig. 9, are further included on the metal middle frame 91, and the metal middle frame can be divided into two parts by the first grounding point 913 and the second grounding point 914, so that antennas with different functions can share the same radiator. The number of the docking points in the embodiment of the present application is not limited, and the two grounding points shown in fig. 9 are only an example, and may be configured as needed in actual design. The positions of the grounding points in the embodiment of the present application are not limited specifically, that is, the positions of the first grounding point 913 and the second grounding point 914 are not limited to the 5 o 'clock direction and the 10 o' clock direction shown in fig. 9, and a certain angle may be shifted according to the design requirement of the optimal radiation position. For the GPS antenna, the scheme provided by the embodiment of the application can flexibly select the position under the antenna, so that the required GPS current distribution is obtained, the GPS directional diagram in the optimal state is obtained, and the performance of the GPS antenna is ensured. Improve GPS positioning time, promote GPS orbit accuracy. In the sports scene which is used most frequently by people, the user experience can be obviously improved.

In some embodiments, the fourth matching network 9131 and the fifth matching network 9141 are further included in the first grounding point 913 and the second grounding point 914, and the impedance of the matching network at the grounding point may be selected according to actual situations, for example, the impedance of the matching network may be set to 0 ohm.

In some embodiments, the first and second feed circuits 921 and 931 further include first and second matching networks 9211 and 9311, respectively, that are configured to enable separate impedance tuning of the cellular signal and the positioning signal. Based on the same principle, in some embodiments, a third matching network 951 is included in the feed circuit of the third antenna 95 for impedance tuning of WiFi and/or bluetooth signals.

In some embodiments, extractor 94 in the foregoing may be a Surface Acoustic Wave (SAW) filter. The SAW filter is a low-loss filter device, belongs to a passive device, does not need a switch or a control circuit, has flat frequency response, excellent out-of-band rejection performance, small volume, light weight, reliable performance and no need of complex adjustment.

Referring to fig. 10, fig. 10 shows a schematic structural diagram of an extractor 94 according to an embodiment of the present disclosure, in which the extractor 94 includes a first end 941, a second end 942, and a third end 943. The first terminal 941 and the second terminal 942 form a first filter path, and the third terminal 943 forms a second filter path. In some embodiments, extractor 94 also has a fourth end 944 that can be connected to ground for grounding extractor 94.

The following takes the communication signal as a GPS signal and the cellular signal as an LTE signal as an example, and the specific operation and operation principle of the extractor 94 will be described in detail with reference to the accompanying drawings.

It can be understood that the working frequency band of the LTE signal is 699MHz-960MHz, and 1710MHz-2690 MHz. Thus, the first filter path may be configured to be able to screen out signals of this frequency range. Similarly, the second filtering path is configured to filter out GPS signals having a frequency range of 1574.42-1576.42MHz while filtering other signals.

For the frequency point 1575.42MHz where the GPS is located, the second filtering path is equivalent to the characteristic of a band-pass filter, and can allow signals of the GPS frequency point to pass through, and for frequency bands other than the GPS, the second filtering path has a great attenuation characteristic. Fig. 11A shows the transmission characteristic of the second filter path, and fig. 11B is a partially enlarged view of a portion of a dashed frame in fig. 11A, in which the horizontal axis represents frequency and the vertical axis represents insertion loss. As can be seen from fig. 11, for signals near the GPS frequency point 1575.42MHz, the insertion loss is within-2 dB, while for signals outside this frequency point range, for example, the insertion loss at 1710MHz is above-40 dB. That is to say, the second filtering path has a better frequency selection characteristic for the GPS signal, and can better filter signals outside the operating frequency band of the GPS.

For the cellular band, please refer to fig. 12A, fig. 12B and fig. 12C, wherein fig. 12B and fig. 12C are enlarged partial views of dashed boxes 121 and 122 in fig. 12A, respectively, where the horizontal axis is frequency and the vertical axis is insertion loss. The first filtering path is in the band below 1500MHz, similar to the effect of low pass filtering, as shown in fig. 12 b; for the frequency band above 1600MHz, the effect similar to high-pass filtering can filter the frequency point of GPS in the whole working frequency band, and only let the LTE frequency band pass through. As can be seen from fig. 11, for signals within the operating frequency band of LTE, the insertion loss of the first filtering path is within-2 dB; and for the signal at the frequency point 1575.42MHz where the GPS is located, the insertion loss is more than-30 dB. Therefore, the first filtering path has a good frequency selection characteristic for the LTE signal, and can filter out signals with unexpected working frequency band of the LTE.

As can be seen from the above-described characteristics of the extractor 94, the extractor 94 can separate the frequency points of LTE and GPS. The isolation between GPS and LTE is shown in fig. 13, and it can be seen from fig. 13 that there is good isolation in the operating frequency range of GPS, so that GPS and LTE signals can coexist. The extractor 94 has a smaller insertion loss, and particularly for 1710MHz frequency points in LTE band3, the insertion loss is much smaller than that caused by adding a GPS band pass filter in the related art.

In some embodiments, the positioning signal referred to herein may include at least one of a GPS signal, a glonass signal, and a beidou signal. Based on this, the center frequency of the second filtering path in the extractor 94 can be selected according to the specific type of the positioning signal.

For example, the positioning signal in the above-mentioned embodiment is a GPS signal, and the center frequency of the second filtering path is 1575.42MHz, which is the center frequency of the GPS L1 band, but of course, the center frequency of the second filtering path may also be 1176.45MHz, which is the center frequency of the GPS L5 band.

For another example, when the positioning signal is a beidou signal, the frequency of the beidou signal in the L1 frequency band is 1561MHz, and thus the center frequency of the second filtering path is configured to 1561 MHz. And to improve the accuracy of the filtering the second filtering path is a narrow band pass filter. Illustratively, the bandwidth of the second filter path may be 100Hz, 500Hz, or 1MHz, etc.

For another example, when the positioning signal is a glonass signal, the frequency of the glonass signal in the L1 frequency band is 1602MHz, and thus the center frequency of the second filtering path is configured to be 1602 MHz. And to improve the accuracy of the second filtering, the bandwidth of the second filtering path may be 100Hz, 500Hz, 1MHz, or the like.

The embodiment of the present application does not limit the specific type of the wearable device. For example, it may be a wearable device having a square appearance as shown in fig. 9, or it may also be a wearable device having a circular appearance as shown in fig. 14, and other shaped wearing products.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware or any other combination. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (6)

1. A wearable device, comprising:

the antenna comprises a metal middle frame, a first antenna and a second antenna, wherein a first feeding point is arranged on the metal middle frame and used for feeding the first antenna and the second antenna, the first antenna is used for transmitting cellular signals, the second antenna is used for transmitting positioning signals, and a feeding circuit of the first antenna and a feeding circuit of the second antenna are arranged in the metal middle frame;

the first end of the extractor is connected with the first feeding point, the second end of the extractor is connected with the feeding circuit of the first antenna, the third end of the extractor is connected with the feeding circuit of the second antenna, a first filtering path is arranged between the first end and the second end and used for filtering signals except the cellular signals, a second filtering path is arranged between the first end and the third end and used for filtering signals except the positioning signals.

2. The wearable device of claim 1, wherein a second feeding point is further disposed on the metal middle frame, the second feeding point is a feeding point of a third antenna, and the third antenna is used for transmitting WiFi signals and/or bluetooth signals.

3. The wearable device of claim 2, wherein the first feed point and the second feed point are disposed at diagonal positions of the metal bezel.

4. The wearable device of claim 1, wherein the positioning signal comprises at least one of a GPS signal, a glonass signal, and a beidou signal.

5. The wearable device of claim 1, wherein the cellular signal is a cellular signal of an LTE system.

6. The wearable device of claim 1, wherein the extractor is a surface acoustic filter.

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