Antenna device, electronic device, and UWB tag

Abstract

The application relates to an antenna device, an electronic device and a UWB label. The antenna device comprises a first antenna, a second antenna, an ultra-wideband module, a radio frequency transceiver module, a first switching module and a first frequency divider. The ultra-wideband module is used for transmitting and receiving a first radio frequency signal; the radio frequency transceiver module is used for transmitting and receiving a second radio frequency signal; the first frequency divider comprises a common terminal, a first branch terminal and a second branch terminal, the common terminal of the first frequency divider is connected with the second antenna, and the first branch terminal of the first frequency divider is connected with the radio frequency transceiver module; the first switching module comprises a common terminal, a first branch terminal and a second branch terminal, the common terminal of the first switching module is connected with the ultra-wideband module, the first branch terminal of the first switching module is connected with the first antenna, and the second branch terminal of the first switching module is connected with the second branch terminal of the first frequency divider, and the first switching module is used for switching the passageway between the ultra-wideband module and the first antenna or the second antenna. The antenna device can improve the radiation range of the ultra-wideband communication.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, in particular to an antenna device, an electronic device and an UWB tag. BACKGROUND

[0002] Ultra Wide Band (UWB) technology is a wireless carrier communication technology, which has the advantages of low system complexity, low transmit signal power spectral density, low sensitivity to channel fading, low interception ability, high positioning accuracy, etc., and is widely used in positioning technology, especially in high-precision positioning scenarios. However, when UWB ranging / angle measurement is performed, the traditional UWB antenna is limited in radiation range due to its directivity, which affects the communication effect of UWB. SUMMARY

[0003] The embodiments of the present application provide an antenna device and an electronic device, which can improve the radiation range of UWB communication.

[0004] An antenna device comprises a first antenna, a second antenna, an ultra-wideband module, a radio frequency transceiver module, a first switching module and a first frequency divider, wherein,

[0005] The ultra-wideband module is configured to transceive a first radio frequency signal in an ultra-wideband frequency band;

[0006] The radio frequency transceiver module is configured to transceive a second radio frequency signal; the first radio frequency signal and the second radio frequency signal are different in frequency band;

[0007] The first frequency divider comprises a common terminal, a first branch terminal and a second branch terminal, the common terminal of the first frequency divider is connected with the second antenna, and the first branch terminal of the first frequency divider is connected with the radio frequency transceiver module;

[0008] The first switching module comprises a common terminal, a first branch terminal and a second branch terminal, the common terminal of the first switching module is connected with the ultra-wideband module, the first branch terminal of the first switching module is connected with the first antenna, and the second branch terminal of the first switching module is connected with the second branch terminal of the first frequency divider; the first switching module is configured to switch the path between the ultra-wideband module and the first antenna or the second antenna;

[0009] The first antenna is configured to radiate the first radio frequency signal;

[0010] The second antenna is configured to radiate the first radio frequency signal and the second radio frequency signal.

[0011] An electronic device comprises the antenna device as described above.

[0012] The UWB tag comprises a first antenna, a second antenna, an ultra-wideband module, a radio frequency transceiver module, a first switching module and a first frequency divider.

[0013] The ultra-wideband module is configured to transceive a first radio frequency signal in an ultra-wideband frequency band.

[0014] The radio frequency transceiver module is configured to transceive a second radio frequency signal; the first radio frequency signal and the second radio frequency signal are in different frequency bands.

[0015] The first frequency divider comprises a common terminal, a first branch terminal and a second branch terminal; the common terminal of the first frequency divider is connected to the second antenna; the first branch terminal of the first frequency divider is connected to the radio frequency transceiver module.

[0016] The first switching module comprises a common terminal, a first branch terminal and a second branch terminal; the common terminal of the first switching module is connected to the ultra-wideband module; the first branch terminal of the first switching module is connected to the first antenna; the second branch terminal of the first switching module is connected to the second branch terminal of the first frequency divider; the first switching module is configured to switch the path between the ultra-wideband module and the first antenna or the second antenna.

[0017] The first antenna is configured to radiate the first radio frequency signal.

[0018] The second antenna is configured to radiate the first radio frequency signal and the second radio frequency signal.

[0019] The antenna device and the electronic device have the ultra-wideband module for transceiving the first radio frequency signal in the ultra-wideband frequency band and the radio frequency transceiver module for transceiving the second radio frequency signal; the first radio frequency signal and the second radio frequency signal are in different frequency bands; the first radio frequency signal is divided into two paths by the first switching module; one path is connected to the radio frequency transceiver module through the first frequency divider and the second antenna, and the second antenna is multiplexed for transceiving; the other path is transceived through the first antenna; the antenna device can select the first antenna or the second antenna to realize UWB communication according to the communication condition, expand the coverage range of the UWB antenna, ensure the UWB communication effect, improve the measurement accuracy, does not need to additionally radiate the ultra-wideband frequency band radio frequency signal by the antenna, and optimizes the occupied volume of the antenna device. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0021] Figure 1 A schematic diagram of a radio frequency circuit of an antenna device according to an embodiment;

[0022] Figure 2 A schematic diagram of a radio frequency circuit of an antenna device according to an embodiment;

[0023] Figure 3 A schematic diagram of a radio frequency circuit of an antenna device according to an embodiment;

[0024] Figure 4 A schematic diagram of an antenna placement of an antenna device according to an embodiment;

[0025] Figure 5 A schematic diagram of an antenna placement of an antenna device according to an embodiment;

[0026] Figure 6 A schematic diagram of an antenna placement of an antenna device according to an embodiment;

[0027] Figure 7 A schematic diagram of a metal sheet placement of an antenna device according to an embodiment;

[0028] Figure 8 A schematic diagram of a first metal sheet and a second metal sheet placement of an antenna device according to an embodiment;

[0029] Figure 9 A schematic diagram of a metal coating strip placement of an antenna device according to an embodiment;

[0030] Figure 10 A schematic diagram of a first metal coating strip and a second metal coating strip placement of an antenna device according to an embodiment;

[0031] Figure 11 A schematic diagram of a first metal coating strip and a second metal coating strip placement of an antenna device according to another embodiment;

[0032] Figure 12 A schematic diagram of an antenna placement of an antenna device according to an embodiment;

[0033] Figure 13 A partial block diagram of an electronic device according to an embodiment. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. In the drawings, embodiments of the present application are shown. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be apparent that the scope of the present application is not limited to the embodiments set forth herein.

[0035] In order to make the purposes, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0036] It can be understood that the terms "first", "second" and the like used in the present application can be used herein to describe various features, but these elements are not limited by these terms. These terms are only used to distinguish the first feature from another feature. For example, without departing from the scope of the present application, the first antenna can be referred to as the second antenna, and similarly, the second antenna can be referred to as the first antenna. The first antenna and the second antenna are both antennas, which are different antennas.

[0037] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of the present application, the meaning of "above" includes the number, such as two or more, including two, unless otherwise explicitly specified.

[0038] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to another element, or connected to another element through a central element. In addition, "connected" in the following embodiments should be understood as "electrically connected", "communicatively connected" and the like if there is transmission of electrical signals or data between the connected objects.

[0039] The antenna device 100 related to the embodiments of the present application can be applied to an electronic device 10 with wireless communication function, which can be an electronic tag, a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, and various forms of user equipment (User Equipment, UE) (such as a mobile phone), a mobile station (Mobile Station, MS) and the like. In one of the embodiments, the electronic device 10 is a positioning electronic tag, which is used to realize positioning relative to other communication devices.

[0040] As Figure 1As shown, the embodiment of the present application provides an antenna device 100, comprising: an ultra-wideband module 110, a radio frequency transceiver module 120, a first antenna ANT1, a second antenna ANT2, a first switching module 130 and a first frequency divider 140. The first frequency divider 130 comprises a common end, a first branch end and a second branch end, the common end of the first frequency divider 140 is connected with the second antenna ANT2, and the first branch end of the first frequency divider 140 is connected with the radio frequency transceiver module 120. The first switching module 130 comprises a common end, a first branch end and a second branch end, the common end of the first switching module 130 is connected with the ultra-wideband module 110, the first branch end of the first switching module 130 is connected with the first antenna ANT1, and the second branch end of the first switching module 130 is connected with the second branch end of the first frequency divider 140; the first switching module 130 is used for switching the path between the ultra-wideband module 110 and the first antenna ANT1 or the second antenna ANT2. Wherein, the ultra-wideband module 110 is used for receiving and transmitting a first radio frequency signal in an ultra-wideband frequency band, the radio frequency transceiver module 120 is used for receiving and transmitting a second radio frequency signal in a frequency band different from the first radio frequency signal. The first antenna ANT1 is used for radiating the first radio frequency signal, and the second antenna ANT2 is used for radiating the first radio frequency signal and the second radio frequency signal. The first switching module 130 is used for selecting the first path between the ultra-wideband module 110 and the first antenna ANT1 or the second path between the ultra-wideband module 110 and the second antenna ANT2, so as to select the first radio frequency signal radiated by the first antenna ANT1 or the second antenna ANT2. When the first switching module 130 turns on the first path between the ultra-wideband module 110 and the first antenna ANT1, the first antenna ANT1 radiates the first radio frequency signal, and the second antenna ANT2 only radiates the second radio frequency signal at this time; when the first switching module 130 turns on the second path between the ultra-wideband module 110 and the second antenna ANT2, the first antenna ANT1 does not radiate the first radio frequency signal at this time, and the second antenna ANT2 radiates the first radio frequency signal and the second radio frequency signal, and multiplexing is realized on the second antenna ANT2. When the first radio frequency signal and the second radio frequency signal are transmitted through the second antenna ANT2, the first frequency divider 140 can isolate the transmission of the first radio frequency signal and the second radio frequency signal, thereby improving the signal transmission quality. When the first radio frequency signal and the second radio frequency signal are received through the second antenna ANT2, the first frequency divider 140 can separate the signal received by the second antenna ANT2, transmit the first radio frequency signal to the ultra-wideband module 110 through the first switching module 130, and transmit the second radio frequency signal to the radio frequency transceiver module 120. Specifically, the first switching module 130 can select to switch the first path and the second path according to the communication quality of the first radio frequency signal; for example, when the signal strength of the first radio frequency signal on the first antenna ANT1 is lower than a preset value, the first switching module 130 turns on the second path between the ultra-wideband module 110 and the second antenna ANT2.In one of the embodiments, the two second ends of the first switching module 130 are respectively connected with the first antenna ANT1 and the second antenna ANT2 through 50-ohm radio frequency lines.

[0041] In the embodiments, the first switching module 130 can be a single-pole double-throw switch, the fixed end of which is the first end, and the movable end of which is the two second ends, which are used to select one of the first antenna ANT1 and the second antenna ANT2 to connect. In this way, the first radio frequency signal received by the first antenna ANT1 or the second antenna ANT2 can be transmitted to the ultra-wideband module 110, or the first radio frequency signal transmitted by the ultra-wideband module 110 can be transmitted through the first antenna ANT1 or the second antenna ANT2.

[0042] In one of the embodiments, the second radio frequency signal can be a Bluetooth frequency band radio frequency signal, a WiFi frequency band radio frequency signal, a 2G frequency band radio frequency signal, a 3G frequency band radio frequency signal, a 4G frequency band radio frequency signal, or a 5G frequency band radio frequency signal.

[0043] The antenna device 100 described above has the ultra-wideband module 110 for transmitting and receiving the first radio frequency signal of the ultra-wideband frequency band and the radio frequency transceiver module 120 for transmitting and receiving the second radio frequency signal, and the frequency bands of the first radio frequency signal and the second radio frequency signal are different. The first radio frequency signal is divided into two paths through the first switching module 130, one of which is multiplexed with the second antenna ANT2 to transmit and receive, and the other of which is transmitted and received through the first antenna ANT1. This allows the antenna device 100 to select the first antenna ANT1 or the second antenna ANT2 to realize UWB communication according to the communication situation, ensures the UWB communication effect, improves the measurement accuracy, does not need to additionally increase the antenna to radiate the ultra-wideband frequency band radio frequency signal, and optimizes the occupied volume of the antenna device 100.

[0044] In one of the embodiments, the first radio frequency signal can be the ultra-wideband frequency band specified in the IEEE802.15.4 protocol, such as the frequency channels shown in Table 1:

[0045] Table 1: Ultra-wideband frequency band table

[0046] Channel Center Frequency (MHz) Bandwidth (MHz) 5 6489.6 499.2 6 6988.8 499.2 7 6489.6 1081.6 8 7488.0 499.2 9 7987.2 499.2 10 8486.4 499.2 11 7987.2 1331.2 12 8985.6 499.2 13 9484.8 499.2 14 9984.0 499.2 15 9484.8 1354.97

[0047] In one of the embodiments, the first radio frequency signal is a radio frequency signal of the frequency band covered by frequency channel 5 or frequency channel 9 in Table 1.

[0048] In one of the embodiments, the ultra-wideband module 110 is a radio frequency transceiver supporting the ultra-wideband protocol of IEEE802.15.4 (including 4z), which supports two-way ranging (2-way-Ranging).

[0049] In one embodiment, the antenna device 100 may also filter the radio frequency signal received by the second antenna ANT2 through two filters to separate the first radio frequency signal and the second radio frequency signal.

[0050] like Figure 2 As shown, in one embodiment, the first antenna ANT1 is also used to radiate a second radio frequency signal. The antenna device 100 further includes a second switching module 150 and a second frequency divider 160. The second frequency divider 160 includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the second frequency divider 160 is connected to the first antenna ANT1, and the first branch terminal of the second frequency divider 160 is connected to the first switching module 130. The second switching module 150 includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the second switching module 150 is connected to the radio frequency transceiver module 120, and the first branch terminal of the second switching module 150 is connected to the first frequency divider 140. The second branch terminal of the second switching module 150 is connected to the second branch terminal of the second frequency divider 160. The second switching module 150 is used to switch the path between the radio frequency transceiver module 120 and either the first antenna ANT1 or the second antenna ANT2.

[0051] The second switching module 150 is configured to select the third path between the RF transceiver module 120 and the first antenna ANT1 or the fourth path between the RF transceiver module 120 and the second antenna ANT2, so as to select the second RF signal radiated by the first antenna ANT1 or the second antenna ANT2. When the second switching module 150 is conducting the third path between the RF transceiver module 120 and the first antenna ANT1, if the first switching module 130 is conducting the first path between the UWB module 110 and the first antenna ANT1, the first RF signal and the second RF signal are radiated by the first antenna ANT1, and multiplexing is realized on the first antenna ANT1; if the first switching module 130 is conducting the second path between the UWB module 110 and the second antenna ANT2, the first antenna ANT1 radiates the second RF signal, and the second antenna ANT2 radiates the first RF signal. When the second switching module 150 is conducting the fourth path between the RF transceiver module 120 and the second antenna ANT2, if the first switching module 130 is conducting the first path between the UWB module 110 and the first antenna ANT1, the first antenna ANT1 radiates the first RF signal, and the second antenna ANT2 radiates the second RF signal; if the first switching module 130 is conducting the second path between the UWB module 110 and the second antenna ANT2, the first RF signal and the second RF signal are radiated by the second antenna ANT2, and multiplexing is realized on the second antenna ANT2. When the first RF signal and the second RF signal are transmitted through the first antenna ANT1, the second frequency divider 160 can isolate the transmission of the first RF signal and the second RF signal, so as to improve the signal transmission quality. When the first RF signal and the second RF signal are received through the first antenna ANT1, the second frequency divider 160 can separate the signal received by the first antenna ANT1, transmit the first RF signal to the UWB module 110 through the first switching module 130, and transmit the second RF signal to the RF transceiver module 120 through the second switching module 150. Specifically, the second switching module 150 can select the third path and the fourth path according to the communication quality of the second RF signal; for example, when the signal strength of the second RF signal on the second antenna ANT2 is lower than a preset value, the second switching module 150 conducts the third path between the RF transceiver module 120 and the first antenna ANT1. In an embodiment, the two second ends of the second switching module 150 are connected to the first antenna ANT1 and the second antenna ANT2 through 50-ohm RF lines respectively.

[0052] In this embodiment, the second switching module 150 can be a single-pole double-throw switch. The stationary end of the single-pole double-throw switch is the first end, and the moving ends of the single-pole double-throw switch are two second ends, which are used to select whether to connect to the second antenna ANT2 via the first frequency divider 140 or to the first antenna ANT1 via the second frequency divider 160. In this way, it is possible to select whether to transmit the second radio frequency signal received by the first antenna ANT1 or the second antenna ANT2 to the radio frequency transceiver module 120, or to select whether to transmit the second radio frequency signal transmitted by the radio frequency transceiver module 120 via the first antenna ANT1 or the second antenna ANT2.

[0053] In one embodiment, the antenna device 100 may also filter the radio frequency signal received by the first antenna ANT1 through two filters to separate the first radio frequency signal and the second radio frequency signal.

[0054] In one embodiment, the radio frequency transceiver module 120 is a Bluetooth module used to transmit a second radio frequency signal in the Bluetooth band.

[0055] like Figure 3 As shown, in one embodiment, the RF transceiver module 120 includes a first RF port and a second RF port; the first RF port is connected to the first branch of the first frequency divider 140 and is used to transmit and receive a second RF signal; the second RF port is used to transmit and receive a third RF signal, the third RF signal having a different frequency band from both the first and second RF signals. The antenna device 100 also includes a third antenna ANT3 and a third frequency divider 170, and the first switching module 130 also includes a third branch. The third frequency divider 170 includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the third frequency divider 170 is connected to the third antenna, the first branch terminal of the third frequency divider 170 is connected to the third branch terminal of the first switching module 130, and the second branch terminal of the third frequency divider 170 is connected to the second RF port of the RF transceiver module 120. The first switching module 130 is used to select and connect the ultra-wideband module 110 to the first antenna ANT1, the second antenna ANT2, or the third antenna ANT3, respectively. When transmitting the first and third radio frequency (RF) signals through the third antenna ANT3, the third frequency divider 170 isolates the transmission of the first and third RF signals, improving signal transmission quality. When receiving the first and third RF signals through the third antenna ANT3, the third frequency divider 170 separates the signals received by the third antenna ANT3, transmitting the first RF signal to the ultra-wideband module 110 via the first switching module 130, and transmitting the third RF signal to the RF transceiver module 120. By selecting different paths for the first RF signal through the first switching module 130, the coverage direction of the ultra-wideband signal is improved, further enhancing measurement accuracy.

[0056] In one embodiment, the radio frequency transceiver module 120 may include at least two radio frequency transceivers that support different communication protocols, such as a radio frequency transceiver that supports the Bluetooth protocol and a radio frequency transceiver that supports the WiFi protocol, for transmitting a second radio frequency signal and a third radio frequency signal, respectively.

[0057] In one embodiment, the antenna device 100 may also filter the radio frequency signal received by the third antenna ANT3 through two filters to separate the first radio frequency signal and the third radio frequency signal.

[0058] refer to Figure 4 to Figure 6 As shown, in one embodiment, the first antenna ANT1 and the second antenna ANT2 are spaced apart along the periphery of the antenna device 100, and the radiating surfaces of the first antenna ANT1 and the second antenna ANT2 each face at least two different directions. This can be understood as each antenna having a radiating surface, which can be understood as the plane on which the antenna radiates the antenna signal. The radiating surfaces of the first antenna ANT1 and the second antenna ANT2 face at least two directions. The first antenna ANT1 and the second antenna ANT2 can be respectively positioned at different locations in the antenna device 100, so that the radiating surfaces of the first antenna ANT1 and the second antenna ANT2 face at least two directions. This, combined with the first switching module 130 selecting and connecting either the first path between the ultra-wideband module 110 and the first antenna ANT1 or the second path between the ultra-wideband module 110 and the second antenna ANT2, allows the first radio frequency signal in the ultra-wideband band to cover more radiation directions, improving measurement accuracy.

[0059] In this embodiment, the radiation direction is a radiation direction within an angular range (for example, 0° to 180° is the first radiation direction, and 180° to 360° is the second radiation direction).

[0060] refer to Figure 5As shown, in one embodiment, the antenna device 100 further comprises a housing, the housing is provided with a side frame 101, and the first antenna ANT1 and the second antenna ANT2 are arranged on the side frame 101. The first antenna ANT1 comprises a first radiation surface and a second radiation surface, the first radiation surface is used for radiating radio frequency signals to a first direction, and the second radiation surface is used for radiating radio frequency signals to a second direction. The second antenna ANT2 comprises a third radiation surface and a fourth radiation surface, the third radiation surface is used for radiating radio frequency signals to the second direction, and the fourth radiation surface is used for radiating radio frequency signals to the first direction, and the first direction and the second direction are opposite. Among them, the first radiation surface and the second radiation surface are two opposite radiation surfaces, the first radiation surface is the main radiation surface of the first antenna ANT1, which is used to realize the signal radiation of the antenna device 100 in the first direction, and the second radiation surface points to the inside of the antenna device 100; the third radiation surface and the fourth radiation surface are two opposite radiation surfaces, the third radiation surface is the main radiation surface of the second antenna ANT2, which is used to realize the signal radiation of the antenna device 100 in the second direction, and the fourth radiation surface points to the inside of the antenna device 100.

[0061] Reference Figure 4 to Figure 6 Specifically, the first antenna ANT1 and the second antenna ANT2 are arranged on two sides or two opposite corners of the side frame 101, so that the first antenna ANT1 and the second antenna ANT2 can cover a larger radiation direction, and at the same time, the isolation between the first antenna ANT1 and the second antenna ANT2 can be improved. In one embodiment, the side frame 101 is a rectangular frame structure, and the first antenna ANT1 and the second antenna ANT2 are arranged on two opposite sides or two opposite corners of the side frame 101. In one embodiment, the side frame 101 is a circular frame structure, and the first antenna ANT1 and the second antenna ANT2 are arranged opposite to each other near the edge of the side frame 101. In other embodiments, the side frame 101 can also be other geometric structures, and the first antenna ANT1 and the second antenna ANT2 are located at substantially opposite positions of the side frame 101 to form complementary radiation directions and improve the isolation between the first antenna ANT1 and the second antenna ANT2.

[0062] As Figure 7As shown in the figure, in one embodiment, the antenna device 100 further comprises a metal sheet 102 arranged inside the shell, the metal sheet 102 comprising a first reflecting surface a and a second reflecting surface b. The first reflecting surface a is opposite to the second radiating surface of the first antenna ANT1 facing inside the antenna device 100, and is used to reflect the radio frequency signals radiated by the second radiating surface, so as to enhance the signal strength of the first antenna ANT1 in the first direction. The second reflecting surface b is opposite to the fourth radiating surface of the second antenna ANT2 facing inside the antenna device 100, and is used to reflect the radio frequency signals radiated by the fourth radiating surface, so as to enhance the signal strength of the second antenna ANT2 in the second direction. In one embodiment, the distance between the metal sheet 102 and the first antenna ANT1 is one fourth of the wavelength of the first antenna ANT1; the distance between the metal sheet 102 and the second antenna ANT2 is one fourth of the wavelength of the second antenna ANT2.

[0063] As shown in the figure, Figure 8 As shown in the figure, in one embodiment, the antenna device 100 further comprises a first metal sheet 103 and a second metal sheet 104. The first metal sheet 103 and the second metal sheet 104 are both arranged inside the shell, and the first antenna ANT1, the first metal sheet 103, the second metal sheet 104 and the second antenna ANT2 are sequentially and spacedly arranged. One surface of the first metal sheet 103 is a reflecting surface, and the reflecting surface of the first metal sheet 103 is opposite to the second radiating surface of the first antenna ANT1 facing inside the antenna device 100, and is used to reflect the radio frequency signals radiated by the second radiating surface, so as to enhance the signal strength of the first antenna ANT1 in the first direction. One surface of the second metal sheet 104 is a reflecting surface, and the reflecting surface of the second metal sheet 104 is opposite to the fourth radiating surface of the second antenna ANT2 facing inside the antenna device 100, and is used to reflect the radio frequency signals radiated by the fourth radiating surface, so as to enhance the signal strength of the second antenna ANT2 in the second direction. In one embodiment, the distance between the first metal sheet 103 and the first antenna ANT1 is one fourth of the wavelength of the first antenna ANT1; the distance between the second metal sheet 104 and the second antenna ANT2 is one fourth of the wavelength of the second antenna ANT2.

[0064] As shown in the figure, Figure 9As shown in one of the embodiments, the surface of the shell is coated with a metal coating strip 105, the projection of the metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2. The metal coating strip 105 is used to enhance the signal strength of the first antenna ANT1 in the first direction and the signal strength of the second antenna ANT2 in the second direction. It can be understood that the surface of the shell is coated with the metal coating strip 105 in a partial area, which can reflect or suppress the signals of the first antenna ANT1 and the second antenna ANT2 in the non-main radiation direction, thereby enhancing the signal strength of the first antenna ANT1 and the second antenna ANT2 in the main radiation direction.

[0065] As shown in one of the embodiments, the surface of the shell is coated with a metal coating strip 105, the projection of the metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2. The metal coating strip 105 is used to enhance the signal strength of the first antenna ANT1 in the first direction and the signal strength of the second antenna ANT2 in the second direction. It can be understood that the surface of the shell is coated with the metal coating strip 105 in a partial area, which can reflect or suppress the signals of the first antenna ANT1 and the second antenna ANT2 in the non-main radiation direction, thereby enhancing the signal strength of the first antenna ANT1 and the second antenna ANT2 in the main radiation direction. Figure 10 As shown in one of the embodiments, the surface of the shell is coated with a metal coating strip 105, the projection of the metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2. The metal coating strip 105 is used to enhance the signal strength of the first antenna ANT1 in the first direction and the signal strength of the second antenna ANT2 in the second direction. It can be understood that the surface of the shell is coated with the metal coating strip 105 in a partial area, which can reflect or suppress the signals of the first antenna ANT1 and the second antenna ANT2 in the non-main radiation direction, thereby enhancing the signal strength of the first antenna ANT1 and the second antenna ANT2 in the main radiation direction.

[0066] As shown in one of the embodiments, the surface of the shell is coated with a metal coating strip 105, the projection of the metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2. The metal coating strip 105 is used to enhance the signal strength of the first antenna ANT1 in the first direction and the signal strength of the second antenna ANT2 in the second direction. It can be understood that the surface of the shell is coated with the metal coating strip 105 in a partial area, which can reflect or suppress the signals of the first antenna ANT1 and the second antenna ANT2 in the non-main radiation direction, thereby enhancing the signal strength of the first antenna ANT1 and the second antenna ANT2 in the main radiation direction. Figure 11 As shown in one of the embodiments, the surface of the shell is coated with a metal coating strip 105, the projection of the metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2. The metal coating strip 105 is used to enhance the signal strength of the first antenna ANT1 in the first direction and the signal strength of the second antenna ANT2 in the second direction. It can be understood that the surface of the shell is coated with the metal coating strip 105 in a partial area, which can reflect or suppress the signals of the first antenna ANT1 and the second antenna ANT2 in the non-main radiation direction, thereby enhancing the signal strength of the first antenna ANT1 and the second antenna ANT2 in the main radiation direction.

[0067] In one of the embodiments, the lower cover of the shell is coated with a third metal coating strip 105 and a fourth metal coating strip 105, and the third metal coating strip 105 and the fourth metal coating strip 105 are not overlapped, the third metal coating strip 105 is close to the first antenna ANT1, the fourth metal coating strip 105 is close to the second antenna ANT2, the projection of the third metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2, and the projection of the fourth metal coating strip 105 on the plane where the first antenna ANT1 and the second antenna ANT2 are located is between the first antenna ANT1 and the second antenna ANT2.

[0068] As shown in the drawings, Figure 12 In one of the embodiments, the third antenna ANT3 is also arranged on the side frame 101, and is arranged along the circumferential direction of the antenna device 100 and spaced apart from the first antenna ANT1 and the second antenna ANT2, and the radiation surfaces of the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 at least face three different directions respectively.

[0069] In one of the embodiments, the third antenna ANT3 is arranged on the circuit board in the shell, so as to form a radiation surface which is at least partially not overlapped with the radiation surfaces of the first antenna ANT1 and the second antenna ANT2, expand the radiation direction of the ultra-wideband signal, and improve the measurement accuracy.

[0070] As shown in the drawings, Figure 13 In one of the embodiments, an electronic device 10 is provided, which includes the antenna device 100 as described in any of the above embodiments. Figure 13 A block diagram of part of the structure of the electronic device 10 provided in the embodiments of the present application. The electronic device 10 further includes a memory 13 having one or more computer readable storage media, a processor 11 including one or more processing cores, a power supply 12, an inertial sensor 14, a buzzer 15, and an indicator light 16. Those skilled in the art can understand that the structure of the electronic device 10 shown in the drawings does not constitute a limitation on the electronic device 10, and the electronic device 10 can include more or fewer components than shown in the drawings, or combine certain components, or different component arrangements. Figure 13 The structure of the electronic device 10 shown in the drawings does not constitute a limitation on the electronic device 10, and the electronic device 10 can include more or fewer components than shown in the drawings, or combine certain components, or different component arrangements.

[0071] Memory 13 can be used to store applications and data. The applications stored in memory 13 include executable code. The applications can constitute various functional modules, including applications for implementing the functions and protocols corresponding to ultra-wideband module 110 and radio transceiver module 120. Processor 11 executes various functional applications and processes data by running the applications stored in memory 13. Memory 13 can include a program storage area and a data storage area, where the program storage area can store an operating system, at least one application required for a function (such as applications for implementing the functions and protocols corresponding to ultra-wideband module 110 and radio transceiver module 120, etc.), and the like; and the data storage area can store data created based on the use of electronic device 10 (such as audio data, location data, etc.), and the like. In addition, memory 13 can include a high-speed random access memory 13, and can also include a nonvolatile memory 13, such as at least one magnetic disk storage 13, flash memory device, or other volatile solid-state memory 13. Accordingly, memory 13 can also include a memory 13 controller to provide processor 11 with access to memory 13.

[0072] Processor 11 is the control center of electronic device 10, and connects all parts of electronic device 10 through various interfaces and lines, and performs overall monitoring of electronic device 10 by running or executing the applications stored in memory 13 and calling the data stored in memory 13 to perform various functions and process data of electronic device 10. Processor 11 can also control first switching module 130 and second switching module 150 to select different paths. Optionally, processor 11 can include one or more processing cores; in one embodiment, processor 11 can integrate an application processor 11 and a modem processor 11, where the application processor 11 mainly processes the operating system, user interface, and applications, and the modem processor 11 mainly processes wireless communication. It can be understood that the above-mentioned modem processor 11 can also not be integrated into processor 11. In one embodiment, modem processor 11 can be integrated in antenna device 100.

[0073] Electronic device 10 also includes power supply 12 for powering various components. Power supply 12 includes one or more batteries as described above. In one embodiment, power supply 12 can be logically connected to processor 11 through power supply 12 management system, so as to realize functions such as management of charging, discharging, and power consumption management through power supply 12 management system. Power supply 12 can also include one or more than one direct current or alternating current power supply 12, a recharging system, a power supply 12 fault detection circuit, a power supply 12 converter or inverter, a power supply 12 status indicator, and the like.

[0074] The electronic device 10 further comprises an inertial sensor 14, which is configured to detect acceleration, posture and other parameters of the electronic device 10 and feed back the detected parameters to the processor 11, which can realize high-precision positioning in combination with the ultra-wideband module 110 and / or the radio frequency transceiver module 120.

[0075] The electronic device 10 further comprises a buzzer 15. The buzzer 15 can emit a buzzing sound under the control of the processor 11, for example, when the electronic device 10 is used to locate an electronic tag, to realize positioning relative to another device, and emit a buzzing sound when the distance between the electronic device 10 and another device exceeds a preset distance. Alternatively, another device interacts with the electronic device 10, sends a positioning instruction to the electronic device 10 when it needs to find the location of the electronic device 10, and the buzzer 15 emits a buzzing sound to indicate its location when the electronic device 10 receives the positioning instruction.

[0076] The electronic device 10 further comprises an indicator light 16, which can emit an indicator signal under the control of the processor 11, for example, when the electronic device 10 is used to locate an electronic tag, to realize positioning relative to another device, and emit an indicator signal when the distance between the electronic device 10 and another device exceeds a preset distance. Alternatively, another device interacts with the electronic device 10, sends a positioning instruction to the electronic device 10 when it needs to find the location of the electronic device 10, and the indicator light 16 emits an indicator signal to indicate its location when the electronic device 10 receives the positioning instruction. In one embodiment, the indicator light 16 can also serve as a power indicator, and the processor 11 controls the indicator light 16 to emit a power indicator according to whether the power of the electronic device 10 is below a warning value, and controls the indicator light 16 to emit a power indicator when the power is below the warning value.

[0077] In the embodiments of the present application, a UWB tag is also provided, which comprises the antenna device according to any of the above embodiments.

[0078] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example.

[0079] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present specification.

[0080] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An antenna device, characterized in that, include: The system comprises a first antenna, a second antenna, an ultra-wideband module, an RF transceiver module, a first switching module, and a first frequency divider; among which... The ultra-wideband module is used to transmit and receive first radio frequency signals in the ultra-wideband frequency band. The radio frequency transceiver module is used to transmit and receive a second radio frequency signal; the first radio frequency signal and the second radio frequency signal have different frequency bands; The first frequency divider includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the first frequency divider is connected to the second antenna, and the first branch terminal of the first frequency divider is connected to the radio frequency transceiver module. The first frequency divider is used to isolate the transmission of the first radio frequency signal and the second radio frequency signal. The first switching module includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the first switching module is connected to the ultra-wideband module, the first branch terminal of the first switching module is connected to the first antenna, and the second branch terminal of the first switching module is connected to the second branch terminal of the first frequency divider. The first switching module is used to switch the path between the ultra-wideband module and the first antenna or the second antenna, respectively. The first antenna is used to radiate the first radio frequency signal; The second antenna is used to radiate the first radio frequency signal and the second radio frequency signal; The first antenna and the second antenna are spaced apart along the periphery of the antenna device; The antenna device further includes a housing, the housing having a side frame, on which the first antenna and the second antenna are disposed; The first antenna includes a first radiating surface and a second radiating surface. The first radiating surface is used to radiate radio frequency signals in a first direction, and the second radiating surface is used to radiate radio frequency signals in a second direction. The first direction is opposite to the second direction. The second antenna includes a third radiating surface and a fourth radiating surface. The third radiating surface is used to radiate radio frequency signals in a second direction, and the fourth radiating surface is used to radiate radio frequency signals in the first direction.

2. The antenna device according to claim 1, characterized in that, It also includes a second frequency divider and a second switching module; The second frequency divider includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the second frequency divider is connected to the first antenna, and the first branch terminal of the second frequency divider is connected to the first switching module. The second switching module includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the second switching module is connected to the radio frequency transceiver module. The first branch terminal of the second switching module is connected to the first frequency divider. The second branch terminal of the second switching module is connected to the second branch terminal of the second frequency divider. The second switching module is used to switch the path between the radio frequency transceiver module and the first antenna or the second antenna, respectively. The first antenna is also used to radiate a second radio frequency signal.

3. The antenna device according to claim 1, characterized in that, The radio frequency transceiver module is a Bluetooth module, and the second radio frequency signal is a radio frequency signal in the Bluetooth band.

4. The antenna device according to claim 1, characterized in that, The radio frequency transceiver module includes a first radio frequency port and a second radio frequency port; the first radio frequency port is connected to the first branch terminal of the first frequency divider and is used to transmit and receive the second radio frequency signal; the second radio frequency port is used to transmit and receive a third radio frequency signal, the third radio frequency signal having a different frequency band from both the first radio frequency signal and the second radio frequency signal. The antenna device further includes: a third antenna and a third frequency divider; the first switching module further includes a third branch terminal; The third frequency divider includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the third frequency divider is connected to the third antenna, the first branch terminal of the third frequency divider is connected to the third branch terminal of the first switching module, and the second branch terminal of the third frequency divider is connected to the second radio frequency port of the radio frequency transceiver module. The third antenna is used to radiate the third radio frequency signal and the first radio frequency signal.

5. The antenna device according to claim 1, characterized in that, It also includes a metal sheet disposed inside the housing; The metal sheet includes a first reflective surface and a second reflective surface. The first reflective surface is opposite to the second radiating surface. The first reflective surface is used to reflect the radio frequency signal radiated by the second radiating surface to enhance the signal strength of the first antenna in the first direction. The second reflective surface is opposite to the fourth radiating surface, and the second reflective surface is used to reflect the radio frequency signal radiated by the fourth radiating surface to enhance the signal strength of the second antenna in the second direction.

6. The antenna device according to claim 1, characterized in that, It also includes a first metal sheet and a second metal sheet; Both the first metal sheet and the second metal sheet are disposed inside the housing; the first antenna, the first metal sheet, the second metal sheet and the second antenna are arranged in sequence at intervals; the reflective surface of the first metal sheet is opposite to the second radiating surface of the first antenna, and is used to reflect the radio frequency signal radiated by the second radiating surface to enhance the signal strength of the first antenna in the first direction; The reflective surface of the second metal sheet is opposite to the fourth radiating surface of the second antenna, and is used to reflect the radio frequency signal radiated by the fourth radiating surface to enhance the signal strength of the second antenna in the second direction.

7. The antenna device according to claim 1, characterized in that, The surface of the housing is coated with a metal strip; The projection of the metal coating strip onto the plane containing the first antenna and the second antenna is located between the first antenna and the second antenna. The metal coating strip is used to enhance the signal strength of the first antenna in the first direction and enhance the signal strength of the second antenna in the second direction.

8. An electronic device, characterized in that, Includes the antenna device as described in any one of claims 1 to 7.

9. A UWB tag, characterized in that, include: The antenna device includes a first antenna, a second antenna, an ultra-wideband module, a radio frequency transceiver module, a first switching module, and a first frequency divider; wherein, The ultra-wideband module is used to transmit and receive first radio frequency signals in the ultra-wideband frequency band. The radio frequency transceiver module is used to transmit and receive a second radio frequency signal; the first radio frequency signal and the second radio frequency signal have different frequency bands; The first frequency divider includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the first frequency divider is connected to the second antenna, and the first branch terminal of the first frequency divider is connected to the radio frequency transceiver module. The first frequency divider is used to isolate the transmission of the first radio frequency signal and the second radio frequency signal. The first switching module includes a common terminal, a first branch terminal, and a second branch terminal. The common terminal of the first switching module is connected to the ultra-wideband module, the first branch terminal of the first switching module is connected to the first antenna, and the second branch terminal of the first switching module is connected to the second branch terminal of the first frequency divider. The first switching module is used to switch the path between the ultra-wideband module and the first antenna or the second antenna, respectively. The first antenna is used to radiate the first radio frequency signal; The second antenna is used to radiate the first radio frequency signal and the second radio frequency signal; The first antenna and the second antenna are spaced apart along the periphery of the antenna device; The antenna device further includes a housing, the housing having a side frame, on which the first antenna and the second antenna are disposed; The first antenna includes a first radiating surface and a second radiating surface. The first radiating surface is used to radiate radio frequency signals in a first direction, and the second radiating surface is used to radiate radio frequency signals in a second direction. The first direction is opposite to the second direction. The second antenna includes a third radiating surface and a fourth radiating surface. The third radiating surface is used to radiate radio frequency signals in a second direction, and the fourth radiating surface is used to radiate radio frequency signals in the first direction.

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