WO2023116033A1

WO2023116033A1 - Ultra wide band antenna array and electronic device

Info

Publication number: WO2023116033A1
Application number: PCT/CN2022/115919
Authority: WO
Inventors: 冯超; 史少洪; 刘抒民; 梁铁柱
Original assignee: 荣耀终端有限公司
Priority date: 2021-12-23
Filing date: 2022-08-30
Publication date: 2023-06-29
Also published as: CN116345124A

Abstract

The embodiments of the present application are suitable for the technical field of antennas. Provided are an ultra wide band (UWB) antenna array and an electronic device. The UWB antenna array comprises a first antenna combination and a second antenna combination, wherein the first antenna combination comprises a first antenna and a second antenna, and the second antenna combination comprises a third antenna and a fourth antenna; the antennas in the first antenna combination do not coincide with the antennas in the second antenna combination, and the minimum distance between the first antenna combination and the second antenna combination is greater than a preset threshold value; the first antenna combination is used for performing angle measurement in a first direction on a target object, and the second antenna combination is used for performing angle measurement in a second direction on the target object, the first direction being different from the second direction; and one antenna in the first antenna combination and one antenna in the second antenna combination are further used for radar ranging. That is, the UWB antenna array provided in the embodiments of the present application can realize both UWB ranging and a radar ranging function.

Description

UWB antenna array and electronic equipment

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on December 23, 2021, with application number 202111592899.7, and application title "Ultra Wideband Antenna Array and Electronic Equipment", the entire contents of which are hereby incorporated by reference in this application middle.

technical field

The embodiments of the present application relate to the technical field of antennas, and in particular to ultra-wideband antenna arrays and electronic equipment.

Background technique

With the development and popularization of Ultra Wide Band (UWB) technology, electronic devices usually use UWB antenna arrays for angle measurement.

Usually, the UWB antenna array on the electronic device includes three antennas, namely the first antenna, the second antenna and the third antenna, wherein the first antenna and the second antenna form an antenna combination for measuring the angle in the horizontal direction, and the first The antenna and the third antenna form an antenna combination for measuring the angle in the vertical direction. In a specific measurement process, in order to improve measurement accuracy, the distance between the phase center of the first antenna and the phase center of the second antenna needs to be smaller than a preset horizontal distance threshold. The distance between the phase center of the first antenna and the phase center of the third antenna needs to be smaller than a preset vertical distance threshold. That is to say, the positions of the antennas in the UWB antenna array are mutually restricted, resulting in the UWB antenna array occupying a large space on the electronic device, thereby restricting the layout of other electronic devices on the electronic device. Further, since the UWB antenna array will occupy a relatively large position on the electronic device, it will also result in that it is impossible to arrange additional electronic devices, such as radar, on the electronic device.

Based on this, how to more effectively utilize the UWB antenna array of electronic equipment has become an urgent problem to be solved.

Contents of the invention

Embodiments of the present application provide an ultra-wideband antenna array and electronic equipment, which can improve the utilization rate of the UWB antenna array on the electronic equipment.

In the first aspect, an ultra-wideband UWB antenna array is provided, the UWB antenna array includes: a first antenna combination and a second antenna combination, the first antenna combination includes the first antenna and the second antenna, and the second antenna combination includes the third antenna and the fourth antenna, the antennas in the first antenna combination do not overlap with the antennas in the second antenna combination, the minimum distance between the first antenna combination and the second antenna combination is greater than the preset threshold, and the first antenna combination is used to detect the target The object is used to measure the angle of the first direction, and the second antenna combination is used to measure the angle of the target object in the second direction. The first direction is different from the second direction. An antenna is also used for radar ranging.

In the embodiment of the present application, it includes a first antenna combination and a second antenna combination, the first antenna combination includes the first antenna and the second antenna, the second antenna combination includes the third antenna and the fourth antenna, and the first antenna combination The antennas in the second antenna combination do not overlap, the minimum distance between the first antenna combination and the second antenna combination is greater than the preset threshold, the first antenna combination is used to measure the angle of the target in the first direction, and the second The antenna combination is used to measure the angle of the target object in the second direction, the first direction is different from the second direction, and one antenna in the first antenna combination and one antenna in the second antenna combination are also used for radar ranging. That is to say, the UWB antenna array provided by the embodiment of the present application realizes the function of radar ranging while realizing UWB ranging.

In one embodiment, the above-mentioned antenna array further includes an A0 antenna, and the A0 antenna is used to send a first signal to the target, the first signal is used to instruct the target to return a second signal or a third signal, and the second signal is used for UWB distance measurement, the third signal is used for angle measurement; A0 is also used for radar ranging with one antenna in combination with the first antenna, or with one antenna in combination with the second antenna.

In one embodiment, the above-mentioned first antenna, second antenna, third antenna and fourth antenna are patch antennas.

In one embodiment, the antennas in the first antenna combination that are far away from the second antenna combination and the antennas in the second antenna combination that are far away from the first antenna combination are used for radar ranging.

In the embodiment of the present application, the antennas in the first antenna combination that are far away from the second antenna combination and the antennas in the second antenna combination that are far away from the first antenna combination are used for radar ranging. This is equivalent to using two antennas with a long distance to realize the radar function, because the farther the distance between the antennas, the higher the isolation, that is to say, using two antennas with higher isolation to realize the radar measurement The distance function avoids the mutual interference between the transmitted signal and the received signal, and improves the ranging range of the radar, which is equivalent to further improving the range of radar ranging using the UWB antenna array.

In one embodiment, the above-mentioned first antenna and second antenna are patch antennas, and the third antenna and fourth antenna are frame antennas; or the first antenna, second antenna, third antenna, and fourth antenna are frame antennas.

In the embodiment of the present application, when the antenna in the first antenna combination is a patch antenna, and the antenna in the second antenna combination is a frame antenna, the antenna in the second antenna combination is used as the transmitting antenna of the radar, and the maximum Minimally avoid the influence of obstacles around electronic equipment on radar ranging, and further improve the applicable range of UWB antenna arrays when used as radars.

In one embodiment, the aforementioned frame antenna includes an inverted-F antenna, a monopole antenna, a dipole antenna and a left-hand antenna.

In an embodiment, the A0 antenna and the third antenna or the fourth antenna are the same antenna.

In the embodiment of the present application, when the antenna in the second antenna combination is a frame antenna, the transmitting antenna is an antenna in the second antenna combination, so that only 4 antennas in the UWB antenna array can simultaneously realize UWB The functions of ranging and radar ranging further reduce the area occupied by the UWB antenna.

In one embodiment, the above-mentioned first direction is perpendicular to the second direction.

Wherein, the first direction may be a horizontal direction, and the second direction may be a vertical direction.

In the embodiment of the present application, when the first direction is perpendicular to the second direction, in the process of measuring the angle in the horizontal direction through the first antenna combination and measuring the angle in the vertical direction through the second antenna combination, no additional calculation processing is required, The error caused by additional calculation processing is reduced, and the accuracy of the angle measured by the UWB antenna array is improved.

In one embodiment, the distance between the phase center of the first antenna and the phase center of the second antenna is greater than 1/4λ and less than 1/2λ, and the distance between the phase center of the third antenna and the phase center of the fourth antenna The distance is greater than 1/4λ and less than 1/2λ; where λ is the wavelength corresponding to the working frequency band of the UWB antenna array.

In a second aspect, an electronic device is provided, and the electronic device includes the ultra-wideband antenna array as shown in the first aspect above.

In one embodiment, the electronic device also includes a switch, the A0 antenna, the first antenna, the second antenna, the third antenna and the fourth antenna in the UWB antenna array are connected to the switch, and the electronic device is connected to the general input and output interface of the switch.

When the GPIO is in the first state, the A0 antenna is in the transmitting channel, the second antenna or the fourth antenna is in the receiving channel, and the radar ranging is performed through the A0 antenna and the second antenna, or the A0 antenna and the fourth antenna are used For radar ranging; the first antenna and the second antenna are used to measure the angle of the target object in the first direction, and the third antenna and the fourth antenna are used to measure the angle of the target object in the second direction.

In one embodiment, when the GPIO of the switch is in the second state, the electronic device makes the first antenna in the transmitting channel, the fourth antenna in the receiving channel, and performs radar ranging through the first antenna and the fourth antenna; or , so that the third antenna is in the transmitting channel, and the second antenna is in the receiving channel, and radar ranging is performed through the third antenna and the second antenna.

In one embodiment, when the GPIO of the switch is in the third state, the electronic device makes the A0 antenna be in the transmit channel, the first antenna, the second antenna, the third antenna and the fourth antenna are in the receive channel, and pass through the A0 antenna Perform UWB ranging on the target object with any antenna, measure the angle of the target object in the first direction through the A0 antenna, the first antenna, and the second antenna, and measure the target object in the second direction through the A0 antenna, the third antenna, and the fourth antenna. An angular measurement in two directions, the first direction being different from the second direction.

In one embodiment, the electronic device includes a switch, and the first antenna, the second antenna, the third antenna, and the fourth antenna in the ultra-wideband antenna array are connected to the switch, wherein the third antenna and the A0 antenna are the same antenna, and the electronic When the general input and output interface GPIO of the switch is in the third state, the device makes the first antenna in the transmitting channel, the fourth antenna in the receiving channel, and performs radar ranging through the combination of the first antenna and the fourth antenna; or, makes The third antenna is in the transmitting channel, the second antenna is in the receiving channel, and the radar ranging is performed through the third antenna and the second antenna; the first antenna and the second antenna are used to measure the angle of the target in the first direction, and the third The antenna and the fourth antenna are used to measure the angle of the target object in a second direction, and the first direction is different from the second direction.

In one embodiment, the third antenna is a frame antenna, and the electronic device is connected to the universal input and output interface of the switch

When the GPIO is in the fourth state, the third antenna is in the transmitting channel, the first antenna, the fourth antenna or the second antenna is in the receiving channel, and UWB ranging is performed through the third antenna and the first antenna, or, through the first antenna The three antennas and the fourth antenna perform UWB ranging, or, the third antenna and the second antenna perform UWB ranging.

The implementation principles and beneficial effects of the above-mentioned electronic equipment are similar to those of the ultra-wideband antenna array described in the first aspect, and will not be repeated here.

Description of drawings

FIG. 1 is a schematic structural diagram of a traditional UWB antenna array electronic device;

Fig. 2 is a schematic diagram of UWB antenna array ranging;

Fig. 3 is a schematic diagram of radar ranging;

FIG. 4 is a schematic diagram of a UWB antenna array application scenario;

FIG. 5 is a schematic structural diagram of a UWB antenna array in an embodiment of the present application;

FIG. 6 is a schematic diagram of distance measurement and angle measurement performed by a UWB antenna array in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

FIG. 8 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

FIG. 9 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

Fig. 10 is a schematic diagram of the positions of the first radiation branch, the second radiation branch, the third radiation branch and the fourth radiation branch in an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

FIG. 12 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

FIG. 13 is a schematic diagram of the circuit logic of the UWB antenna array in one embodiment of the present application;

FIG. 14 is a schematic structural diagram of different antennas in an embodiment of the present application;

FIG. 15 is a schematic diagram of the positional relationship of each antenna in the UWB antenna array in one embodiment of the present application;

FIG. 16 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

FIG. 17 is a schematic structural diagram of a mobile phone in an embodiment of the present application;

FIG. 18 is a schematic structural diagram of a mobile phone in another embodiment of the present application;

FIG. 19 is a schematic structural diagram of a frame antenna in an embodiment of the present application;

FIG. 20 is a schematic structural diagram of a frame antenna in another embodiment of the present application;

FIG. 21 is a schematic diagram of the positional relationship between the antennas of the UWB antenna array in another embodiment of the present application;

Fig. 22 is a schematic structural diagram of a UWB antenna array in another embodiment of the present application;

FIG. 23 is a schematic diagram of the circuit logic of the UWB antenna array in another embodiment of the present application;

Fig. 24 is a schematic diagram of an electronic device in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Among them, in the description of the embodiments of this application, unless otherwise specified, "/" means or means, for example, A/B can mean A or B; "and/or" in this article is only a description of associated objects The association relationship of indicates that there may be three kinds of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. In addition, in the description of the embodiments of the present application, "plurality" refers to two or more than two.

Hereinafter, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include one or more of these features.

For ease of understanding, the following first introduces related terms and concepts that may be involved in the embodiments of the present application.

(1) UWB technology

UWB technology is a new type of carrier-free communication technology, which realizes wireless transmission by sending and receiving extremely narrow pulses below the nanosecond or microsecond level, so it has ultra-large bandwidth and low transmission power, and can further achieve low power consumption Fast data transfer on the horizontal. In related technologies, UWB technology is often used to realize the positioning of targets, such as the positioning of TV sets and air conditioners. Because UWB technology has strong anti-interference ability, it makes positioning accuracy high and positioning error is relatively small, filling the field of high-precision positioning. Whitespace.

(2) UWB antenna array

In the process of positioning by UWB technology, the antenna of the tag device is usually designed as a circularly polarized antenna, and the antenna on the positioning device (such as a mobile phone) is designed as a linearly polarized antenna. Since circularly polarized waves can be received by any linearly polarized antenna, no matter how the mobile phone is placed, the antenna of the mobile phone can still receive the electromagnetic wave energy emitted by the antenna of the tag device. For more accurate positioning, generally, the mobile phone includes an antenna combination for measuring the angle in the horizontal direction and an antenna combination for measuring the angle in the vertical direction. Among them, the combination of antennas for measuring the angle in the horizontal direction and the combination of antennas for measuring the angle in the vertical direction can be called a UWB antenna array.

(3) Phase center

The phase center of the antenna means that after the electromagnetic wave radiated by the antenna leaves the antenna for a certain distance, its equi-phase surface will approximate a spherical surface, and the spherical center of the sphere is the equivalent phase center of the antenna. That is to say, it is theoretically considered that the signal radiated by the antenna is centered on the phase center and radiated outward.

The UWB antenna array provided in the embodiment of the present application can be applied to electronic equipment. Optionally, the electronic device may be a notebook computer, a tablet computer, a palmtop computer, a vehicle terminal, a sales terminal, a wearable device, a mobile phone, and the like.

At present, electronic equipment can use UWB antenna arrays to realize the positioning measurement of the object to be measured, such as the positioning of TV sets and air conditioners. Exemplarily, a UWB antenna array on an electronic device may be as shown in FIG. 1 , and the UWB antenna array includes three antennas, which are respectively a first antenna, a second antenna, and a third antenna. Wherein, the first antenna and the second antenna form an antenna combination for measuring the angle in the horizontal direction, and the first antenna and the third antenna form an antenna combination for measuring the angle in the vertical direction. In a specific positioning measurement process, in order to improve the accuracy of positioning measurement, the distance between the phase center of the first antenna and the phase center of the second antenna needs to be smaller than a preset horizontal distance threshold. The vertical distance between the phase center of the first antenna and the phase center of the third antenna needs to be smaller than a preset vertical distance threshold. That is to say, the positions of the first antenna, the second antenna and the third antenna in the UWB antenna array are relatively fixed, and the positions of the antennas cannot be flexibly changed according to the layout of other electronic devices on the electronic device. Under the trend of miniaturization of electronic equipment, the use of traditional UWB antenna arrays will make the flexibility of layout positions of other electronic devices on the electronic equipment worse. At the same time, the electronic device is also provided with a radar for distance measurement. A UWB antenna array and a radar are installed on the same electronic device, resulting in too many devices on the electronic device.

It should be understood that when using UWB ranging, the target needs to also lay out the UWB module, that is, the UWB antenna array transmits the first signal for ranging, and the UWB module on the target sends the corresponding signal to the UWB antenna array after receiving the first signal. second signal. That is to say, the UWB antenna array can only measure the distance of the target object including the UWB module, and cannot measure the distance of any object. Since the UWB antenna array receives the second signal sent by the target, the frequency of the second signal and the first signal may be different, and the antenna for transmitting the signal may be the same antenna as the antenna for receiving the signal. Exemplarily, as shown in FIG. 2, the second antenna in the UWB antenna array 1000 sends out a first signal, the target 2000 receives the first signal, and sends a second signal to the UWB antenna array 1000, and the second antenna in the UWB antenna array 1000 The second antenna receives the second signal, and the UWB antenna array determines the distance of the target object based on the first signal and the second signal.

Using radar ranging, usually using the transmitting antenna to transmit electromagnetic wave signals outward, the transmitted electromagnetic wave signal is reflected back by the target, received by the radar receiving antenna, and then the target object is determined according to the time difference between the transmitted electromagnetic wave signal and the received electromagnetic wave signal The target object may be an object without a transmitting function, and it only needs to be able to reflect electromagnetic wave signals. That is to say, in the process of radar ranging, the transmitting antenna has been transmitting electromagnetic wave signals, while the receiving antenna has been receiving electromagnetic wave signals. Therefore, the transmitting antenna and receiving antenna in the radar are two independent antennas and cannot be multiplexed. Exemplarily, as shown in FIG. 3 , the transmitting antenna 3100 in the radar 3000 transmits electromagnetic wave signals to the outside, and the electromagnetic wave signals are reflected by the target object 4000 and received by the receiving antenna 3200 in the radar 3000 . Wherein, the transmitting antenna 3100 and the receiving antenna 3200 are different antennas and cannot be multiplexed.

The application scenarios of the embodiments of the present application are briefly described below.

The UWB antenna array provided by the embodiment of the present application can be applied in electronic devices, such as mobile phones. As shown in Figure 4, by placing the first antenna combination for angle measurement in the horizontal direction and the second antenna combination for angle measurement in the vertical direction separately in different areas of the mobile phone, other larger electronic devices can be preferentially laid out , and after the positions of other larger electronic devices are determined, the first antenna combination and the second antenna combination in the UWB antenna array are placed according to the remaining space on the mobile phone, which improves the flexibility of the placement of other electronic devices on the mobile phone. At the same time, when the first antenna combination and the second antenna combination are placed separately, and the distance between the first antenna combination and the second antenna combination is relatively large, the antennas in the first antenna combination and the antennas in the second antenna combination The isolation between the antennas is relatively large, so that the antennas in the first antenna combination and the antennas in the second antenna combination can receive and transmit signals of the same frequency band at the same time, realizing the function of radar ranging. In this way, the UWB antenna array can realize the function of radar ranging while realizing the function of UWB ranging, which broadens the use of the UWB antenna array.

The UWB antenna array provided by the embodiment of the present application will be described in detail below with reference to FIG. 5 to FIG. 23 .

As shown in FIG. 5 , the embodiment of the present application provides an ultra-wideband UWB antenna array 1000, including: a first antenna combination 1100 and a second antenna combination 1200, and the first antenna combination 1100 includes a first antenna 1110 and a second antenna 1120 , the second antenna combination 1200 includes a third antenna 1210 and a fourth antenna 1220, the antennas in the first antenna combination 1100 do not overlap with the antennas in the second antenna combination 1200, and between the first antenna combination 1100 and the second antenna combination 1200 The minimum distance is greater than the preset threshold, the first antenna combination 1100 is used to measure the angle of the target object in the first direction, and the second antenna combination 1200 is used to measure the angle of the target object in the second direction, the first direction is different from the first direction In two directions, one antenna in the first antenna combination 1100 and one antenna in the second antenna combination 1200 are also used for radar ranging.

It should be understood that the first antenna 1110 and the second antenna 1120 in the first antenna combination 1100 may be antennas with the same structure or antennas with different structures, which is not limited in this embodiment of the present application. The third antenna 1210 and the fourth antenna 1220 in the second antenna combination 1200 may be antennas with the same structure, or may be antennas with different structures, which is not limited in this embodiment of the present application. The antennas in the first antenna combination 1100 and the antennas in the second antenna combination 1200 may be antennas with the same structure, or antennas with different structures, which is not limited in this embodiment of the present application.

It should be noted that since the first antenna combination 1100 and the second antenna combination 1200 have no common antenna. Therefore, the location of the first antenna assembly 1100 and the location of the second antenna assembly 1200 do not restrict each other, that is to say, the area where the first antenna assembly 1100 is located does not overlap with the area where the second antenna assembly 1200 is located. Exemplarily, the area where the first antenna assembly 1100 is located and the area where the second antenna assembly 1200 is located may be as shown in FIG. 4 . When laying out the electronic devices on the electronic equipment, since the camera occupies a large area, the camera can be set at the center first, as shown in Figure 4, and then look for other areas on the electronic equipment where the first antenna combination can be placed 1100 and 1200 positions for the second antenna combination. Since the first antenna combination 1100 and the second antenna combination 1200 can be placed separately, the first antenna combination 1100 and the second antenna combination 1200 do not need to occupy a complete area on the electronic device. For example, as shown in FIG. 4 , the first antenna assembly 1100 and the second antenna assembly 1200 may be respectively placed on two sides of the camera.

The principle of ranging and angle measurement of the UWB antenna array will be described below.

It should be understood that the UWB antenna array 1000 generally further includes an A0 antenna 1300 .

The A0 antenna 1300 is an antenna with good directivity, for example, the A0 antenna 1300 is a frame antenna. In the process of measuring distance through the UWB antenna array 1000, as shown in (a) in Figure 6, after the first signal sent by the A0 antenna 1300 is received by the tag device (target) 2000, the tag device 2000 sends a signal to the UWB antenna array 1000 Returning the second signal, after the first antenna 1110, the second antenna 1120, the third antenna 1210 or the fourth antenna 1220 of the UWB antenna array 1000 receives the second signal, according to the time difference between sending the first signal and receiving the second signal, The distance between the tag device 2000 and the UWB antenna array 1000 is determined. Exemplarily, as shown in (a) of FIG. 6 , the fourth antenna 1220 in the UWB antenna array 1000 receives the second signal.

When performing angle measurement through the UWB antenna, as shown in (b) in FIG. The phases of the third signal received by the first antenna 1110 and the second antenna 1120 arranged along the horizontal direction in the UWB antenna array 1000 are different. r1 is calculated according to the time when the first signal is transmitted and the time when the first antenna receives the third signal, and r2 is calculated according to the time when the first signal is transmitted and the time when the second signal receives the third signal. When the distance d between the first antenna 1110 and the second antenna 1120 is determined, the angle A1 between the line connecting the tag device 2000 and the first antenna 1110 and the horizontal line can be calculated according to r1, r2 and d through the law of cosines ; That is, the angle between the tag device 2000 and the UWB antenna array 1000 in the horizontal direction. In an example, the horizontal distance x between the tag device 2000 and the UWB antenna array 1000 and the vertical distance y between the tag device 2000 and the UWB antenna array 1000 can also be calculated according to r1, r2 and d, and then the distance between the tag device 2000 and the first antenna can be calculated. The included angle A1 between the line connecting 1110 and the horizontal line, and the included angle A2 between the connecting line connecting the tag device 2000 and the second antenna 1120 and the horizontal line are obtained. It should be understood that since the distance between the first antenna 1110 and the second antenna 1120 is much smaller than the distance between the UWB antenna array 1000 and the tag device 2000, A1 is approximately equal to A2, that is, the distance between the tag device 2000 and the UWB antenna array 1000 The angle between the horizontal directions.

The principle of measuring the angle in the vertical direction through the third antenna 1210 and the fourth antenna 1220 is similar to the above-mentioned angle measurement in the horizontal direction, and will not be repeated here.

When the angle α formed by the line between the first antenna 1110 and the second antenna 1120 and the line between the third antenna 1210 and the fourth antenna 1220 is greater than 0° and less than 180°, the first antenna Combination 1100 and second antenna combination 1200 can make angle measurements in two different directions. That is, the angle α between the first antenna combination 1100 and the second antenna combination 1200 is greater than 0° and less than 180°.

Exemplarily, as shown in FIG. 7 , the angle α formed by the connection line between the first antenna 1110 and the second antenna 1120 and the connection line between the third antenna 1210 and the fourth antenna 1220 is 135°. That is, the line connecting the first antenna 1110 and the second antenna 1120 is parallel to the horizontal direction, and the angle between the line connecting the third antenna 1210 and the fourth antenna 1220 and the horizontal line is 135°. After the first signal sent by the A0 antenna 1300 meets the target, the target sends a third signal based on the received first signal, and the first antenna 1110 and the second antenna 1120 in the first antenna combination 1100 receive the third signal. signal, according to the phase difference between the third signal received by the first antenna 1110 and the third signal received by the second antenna 1120, based on the phase difference of these two signals, the horizontal gap between the target object and the UWB antenna array can be calculated horn. The third antenna 1210 and the fourth antenna 1220 in the second antenna combination 1200 respectively receive the third signal, and according to the phase difference between the third signal received by the third antenna 1210 and the third signal received by the fourth antenna 1220, Based on the phase difference of the two signals, the included angle between the target object and the line between the third antenna 1210 and the fourth antenna 1220 can be calculated. The angle between the target object and the UWB antenna array in the vertical direction is obtained by converting it through the trigonometric formula.

In one possible situation, the first direction generally refers to a horizontal direction parallel to the ground plane, the second direction generally refers to a vertical direction perpendicular to the ground plane, and the angle between the horizontal direction and the vertical direction is 90°. In the following description, the first direction is the horizontal direction and the second direction is the vertical direction.

Optionally, the angle α between the first antenna combination 1100 and the second antenna combination 1200 is 90°.

When the included angle between the first antenna combination 1100 for measuring the angle in the horizontal direction and the second antenna combination 1200 for measuring the angle in the vertical direction is 90°, in the specific measurement process, it is not necessary to measure the angle and the angle measured by the first antenna combination 1100 The angles measured by the second antenna combination 1200 are normalized to reduce errors caused by the normalization.

In the embodiment of the present application, when the angle α between the first antenna combination and the second antenna combination is 90°, the angle in the horizontal direction is measured by the first antenna combination, and the angle in the vertical direction is measured by the second antenna combination In the process, no additional calculation processing is required, the error caused by the additional calculation processing is reduced, and the accuracy of the angle measured by the UWB antenna array is improved.

It should be understood that the UWB antenna array 1000 may work in single-band, dual-band, triple-band, etc., which is not limited in this embodiment of the present application. The UWB antenna array 1000 includes a first antenna combination 1100 and a second antenna combination 1200 . Wherein, the first antenna combination 1000 is used to measure the angle in the first direction, and the distance between the phase center of the first antenna 1110 and the phase center of the second antenna 1120 satisfies greater than

λ and less than

lambda. When the second antenna combination 1200 performs angle measurement in the second direction, the distance between the phase center of the third antenna 1210 and the phase center of the fourth antenna 1220 is greater than

λ and less than

λ, where λ is the wavelength corresponding to the working frequency band of the UWB antenna array 1000 .

Since the UWB antenna can work in single-band, dual-band, triple-band, etc., when the UWB antenna array 1000 works in dual-band, the corresponding wavelength λ includes the wavelength λ ₁ of the first frequency band and the wavelength λ ₂ of the second frequency band . The distance between the phase center of the first antenna 1110 and the phase center of the second antenna 1120 is greater than

λ and less than

in lambda

λ means

λ ₁ and

the maximum value in _λ2 ,

λ means

λ ₁ and

The minimum value in λ ₂ . The following describes in detail through the embodiments shown in FIGS. 8 to 12 .

In an example, as shown in FIG. 8 , optionally, the UWB antenna array works in the first frequency band and the second frequency band. The UWB antenna array 1000 includes a first antenna combination 1100 and a second antenna combination 1200, the first antenna combination 1100 is used to measure the angle in the horizontal direction, the second antenna combination 1200 is used to measure the angle in the vertical direction, and the first antenna combination 1100 The antennas in the antenna do not overlap with the antennas in the second antenna combination 1200; the first antenna combination 1100 includes a first antenna 1110 and a second antenna 1120, the first antenna 1110 and the second antenna 1120 are rectangular structures, the first antenna 1110 and the second antenna 1110 The two antennas 1120 respectively include a first side and a second side perpendicular to each other, the second antenna combination 1200 includes a third antenna 1210 and a fourth antenna 1220, the third antenna 1210 and the fourth antenna 1220 are rectangular structures, the third antenna 1210 and The fourth antenna 1220 includes first and second sides, respectively. Among them, the first side is used to transmit the signal of the first frequency band, the second side is used to transmit the signal of the second frequency band, and the length of the first side is

λ ₁ , the length of the second side is

λ ₂ . In the case that the first frequency band is higher than the second frequency band, the distance _d1 between the phase center of the first antenna and the phase center of the second antenna is greater than

λ ₂ and less than

λ ₁ , the distance d ₂ between the phase center of the third antenna 1210 and the phase center of the fourth antenna 1220 is greater than

λ ₂ and less than

λ ₁ , λ ₁ is the wavelength corresponding to the first frequency band, and λ ₂ is the wavelength corresponding to the second frequency band.

It should be understood that, when the antenna radiates signals, the length of the antenna's radiation stub is related to the working frequency of the antenna. The higher the operating frequency of the antenna, the shorter the length of the radiation stub of the antenna. In the embodiment of the present application, since the UWB antenna array works in the first frequency band and the second frequency band at the same time, each antenna in the UWB antenna array needs to work in the first frequency band and the second frequency band at the same time, that is to say, UWB Each antenna in the antenna array needs to include a radiation branch corresponding to the first frequency band and a radiation branch corresponding to the second frequency band at the same time.

In a possible situation, as shown in FIG. 8 , each antenna in the UWB antenna array has a rectangular structure. Taking the center frequency of the first frequency band as 8 GHz and the center frequency of the second frequency band as 6.5 GHz as an example, how the first antenna 1110 works simultaneously in the first frequency band and the second frequency band will be described. Usually the rectangular structure includes a short side (first side) and a long side (second side) perpendicular to each other. In the case of the first antenna 1110 having a rectangular structure, the short side (first side) can be used as the center frequency point of 8GHz The radiation branch of the signal, through the long side (second side) of the rectangular structure as the center frequency point is the radiation branch of the 6.5GHz signal.

When two antennas are used to measure the angle of one direction, the distance between the two antennas needs to be greater than one quarter of the target wavelength and less than one half of the target wavelength. Wherein, the target wavelength refers to the wavelength corresponding to the working frequency band of the antenna. Since the UWB antenna works in two frequency bands, that is, the first frequency band and the second frequency band, the distance between the first antenna 1110 and the second antenna 1120, and/or, between the third antenna 1210 and the fourth antenna 1220 When the distance is specified, it is necessary to comprehensively consider the wavelength corresponding to the first frequency band and the wavelength of the second frequency band.

Exemplarily, when the first frequency band is higher than the second frequency band, the distance _d1 between the phase center of the first antenna and the phase center of the second antenna is greater than

λ ₂ and less than

It should be noted that, in the specific process of determining the distance between the phase center of the first antenna 1110 and the phase center of the second antenna 1120, since the process of determining the phase center is relatively complicated, a relatively simple method needs to be adopted to Determine the distance between the phase centers of the two antennas. The phase center is generally related to the structure of the antenna, and the phase centers of antennas with the same structure are the same. In a possible situation, the first antenna 1110 and the second antenna 1120 have the same structure, and the phase center of the first antenna 1110 and the phase center of the second antenna 1120 are at the same position. Therefore, the first target position in the first antenna 1110 can be selected, and the second target position in the second antenna 1120 that is the same as the first target position can be found, and the distance between the first target position and the second target position can be used as the first target position. The distance between the phase center of the antenna 1110 and the phase center of the second antenna 1120 .

In the embodiment of the present application, the UWB antenna array works in the first frequency band and the second frequency band. When the first frequency band is higher than the second frequency band, the distance between the phase center of the first antenna and the phase center of the second antenna d ₁ greater than

λ ₂ and less than

λ ₁ , the distance d ₂ between the phase center of the third antenna and the phase center of the fourth antenna is greater than

λ ₂ and less than

λ ₁ , where λ ₁ is the wavelength corresponding to the first frequency band, and λ ₂ is the wavelength corresponding to the second frequency band. That is to say, in the UWB antenna array provided by the embodiment of the present application, the distance between the first antenna and the second antenna used for measuring the angle in the horizontal direction is obtained by comprehensively considering the first frequency band and the second frequency band. The distance between the third antenna and the fourth antenna, which is used to measure the angle in the vertical direction, is also obtained by comprehensively considering the first frequency band and the second frequency band, so that the angle in the horizontal direction through the first antenna and the second antenna The measurement is more accurate, and the angle measurement in the vertical direction through the third antenna and the fourth antenna is more accurate, thereby making the angle measurement using the UWB antenna array more accurate.

It should be understood that the performance of the antenna is best when the length of the antenna's radiating stub is one-half wavelength. The length of the first side of the first antenna 1110, the second antenna 1120, the third antenna 1210, and the fourth antenna 1220 in the embodiment of the present application is equivalent to the length of the radiation branch in the first frequency band, and the length of the second side is equivalent to The length of the radiating stub in the second frequency band, that is, the length of the first side is

λ ₁ , the length of the second side is

When λ ₂ , the performance of the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220 is the best.

In the embodiment of the present application, the first antenna, the second antenna, the third antenna and the fourth antenna are rectangular structures, respectively including a first side and a second side perpendicular to each other, and the length of the first side is

λ ₁ , the length of the second side is

λ ₂ , where λ ₁ is the wavelength corresponding to the first frequency band, and λ ₂ is the wavelength corresponding to the second frequency band. That is to say, the radiation branches of the first antenna, the second antenna, the third antenna and the fourth antenna on the first frequency band are half the wavelength corresponding to the first frequency band, and the radiation branches on the second frequency band are the second The half wavelength corresponding to the second frequency band enables the first antenna, the second antenna, the third antenna and the fourth antenna to have good performance in different frequency bands, thereby improving the use of the first antenna, the second antenna, the third antenna and the The fourth antenna UWB antenna array performs angle measurement accuracy.

In an example, as shown in FIG. 9 , the UWB antenna array works in the first frequency band and the second frequency band. The UWB antenna array 1000 includes a first antenna combination 1100 and a second antenna combination 1200, the first antenna combination 1100 is used to measure the angle in the horizontal direction, the second antenna combination 1200 is used to measure the angle in the vertical direction, and the first antenna combination 1100 The antennas in the antenna do not overlap with the antennas in the second antenna combination 1200; the first antenna combination 1100 includes a first antenna 1110 and a second antenna 1120, the first antenna 1110 and the second antenna 1120 are rectangular structures, the first antenna 1110 and the second antenna 1110 The two antennas 1120 respectively include a first side and a second side perpendicular to each other, wherein the first side is used to transmit signals of the first frequency band, and the second side is used to transmit signals of the second frequency band, and the length of the first side is

λ ₁ , the length of the second side is

λ ₂ . In the case that the first frequency band is higher than the second frequency band, the distance between the phase center of the first antenna and the phase center of the second antenna is greater than

λ ₂ and less than

λ ₁ . The second antenna combination 1200 includes a third antenna 1210 and a fourth antenna 1220. The third antenna 1210 includes a first radiation branch 1211 and a second radiation branch 1212. The first radiation branch 1211 is used to transmit signals of the first frequency band, and the second radiation Branch 1212 is used to transmit signals of the second frequency band; the fourth antenna 1220 includes a third radiation branch 1221 and a fourth radiation branch 1222, the third radiation branch 1221 is used to transmit signals of the first frequency band, and the fourth radiation branch 1222 is used to transmit The signal of the second frequency band. The distance between the phase center of the first radiating stub 1211 and the phase center of the third radiating stub 1221 is greater than

λ ₁ and less than

λ ₁ The distance between the phase center of the second radiating stub 1212 and the phase center of the fourth radiating stub 1222 is greater than

λ ₂ and less than

λ ₂ . The lengths of the first radiating branch 1211 and the third radiating branch 1221 are

λ ₁ , the lengths of the second radiating stub 1212 and the fourth radiating stub 1222 are

λ ₂ , where λ ₁ is the wavelength corresponding to the first frequency band, and λ ₂ is the wavelength corresponding to the second frequency band.

Wherein, the first antenna 1110 and the second antenna 1120 in the first antenna combination 1100 are similar to the embodiment shown in FIG. 14 , and will not be repeated here.

The third antenna 1210 in the second antenna combination 1200 includes two radiation branches, namely the first radiation branch 1211 for transmitting signals in the first frequency band, and the second radiation branch for transmitting signals in the second frequency band 1212. The fourth antenna 1220 includes two radiation branches, respectively a third radiation branch 1221 for transmitting signals of the first frequency band, and a fourth radiation branch 1222 for transmitting signals of the second frequency band.

It should be understood that if the distance between the first radiating stub 1211 and the third radiating stub 1221 is between 1/2 wavelength and 1/4 wavelength, UWB distance measurement and angle measurement will be more accurate. The distance between the second radiating stub 1212 and the fourth radiating stub 1222 is between 1/2 wavelength to 1/4 wavelength, and UWB distance measurement and angle measurement will be more accurate. The first radiation stub 1211 and the third radiation stub 1221 should be set in the same area, and the second radiation stub 1212 and the fourth radiation stub 1222 should be set in the same area. Optionally, the distance between the phase center of the first radiating stub 1211 and the phase center of the third radiating stub 1221 is greater than

λ ₁ and less than

λ ₁ , the distance between the phase center of the second radiating stub 1212 and the phase center of the fourth radiating stub 1222 is greater than

λ ₂ and less than

λ ₂ and λ ₁ are the wavelengths corresponding to the first frequency band, and λ ₂ is the wavelength corresponding to the second frequency band.

In the embodiment of the present application, the distance between the phase center of the first radiating stub and the phase center of the third radiating stub is greater than

λ ₁ and less than

λ ₁ , the distance between the phase center of the second radiating stub and the phase center of the fourth radiating stub is greater than

λ ₂ and less than

λ ₂ . The distance between the radiation branches is determined according to their corresponding working frequency bands, which improves the accuracy of the determined distance between the radiation branches. At the same time, it avoids the situation that the distance range between the radiation stubs is reduced in order to satisfy two frequency bands at the same time, thereby improving the flexibility of setting the positions of each radiation stub.

It should be noted that, in the embodiment of the present application, the distance between the first radiation branch 1211 and the second radiation branch 1212 is not limited, and the distance between the third radiation branch 1221 and the fourth radiation branch 1222 is not limited.

Exemplarily, the positional relationship among the first radiation branch 1211, the second radiation branch 1212, the third radiation branch 1221 and the fourth radiation branch 1222 can be shown in (a) in FIG. The distance is relatively close. The positional relationship between the first radiation branch 1211, the second radiation branch 1212, the third radiation branch 1221 and the fourth radiation branch 1222 can be shown in (b) in Figure 10, the first radiation branch 1211 and the second radiation branch 1211 The distance between 1212 is greater than the first preset threshold; the distance between the third radiating stub 1221 and the fourth radiating stub 1222 is greater than the second preset threshold. It should be noted that the first preset threshold may be the same as or different from the second preset threshold, which is not limited in this embodiment of the present application.

In the embodiment of the present application, the distance between the first radiating branch and the second radiating branch is greater than the first preset threshold; the distance between the third radiating branch and the fourth radiating branch is greater than the second preset threshold, that is, That is to say, the UWB antenna array can be divided into three parts and arranged in three different areas of the electronic equipment, which further improves the flexibility of laying out electronic devices on the electronic equipment.

It should be understood that when the radiation stub of the antenna is half of the wavelength corresponding to the working frequency band, the performance of the antenna is the best. Since the first radiation stub 1211 and the third radiation stub 1221 work in the first frequency band, the second radiation stub 1212 and the fourth radiation stub 1222 work in the second frequency band. Optionally, the lengths of the first radiating branch 1211 and the third radiating branch 1221 are

λ ₂ .

In the embodiment of the present application, the lengths of the first radiation branch, the second radiation branch, the third radiation branch and the fourth radiation branch in the second antenna combination are determined according to their respective operating frequency bands, so that each radiation branch is in the corresponding The performance in the frequency band is good, which improves the accuracy of the angle measurement in the vertical direction by the second antenna combination, thereby improving the accuracy of the distance measurement and angle measurement of the UWB antenna array.

In one example, as shown in FIG. 11, the UWB antenna works in the first frequency band and the second frequency band. The UWB antenna array 1000 includes a first antenna combination 1100 and a second antenna combination 1200. The first antenna combination 1100 is used for horizontal angle measurement, the second antenna combination 1200 is used to measure the angle in the vertical direction, the antennas in the first antenna combination 1100 and the antennas in the second antenna combination 1200 do not overlap; the first antenna combination 1100 includes the first antenna 1110 and the first antenna 1110 Two antennas 1120, the first antenna 1110 includes a fifth radiation branch 1111 and a sixth radiation branch 1112, the fifth radiation branch 1111 is used to transmit signals of the first frequency band, and the sixth radiation branch 1112 is used to transmit signals of the second frequency band; The second antenna 1120 includes a seventh radiating branch 1121 and an eighth radiating branch 1122, the seventh radiating branch 1121 is used to transmit signals of the first frequency band, the eighth radiating branch 1122 is used to transmit signals of the second frequency band, and the fifth radiating branch 1111 The distance between the phase center and the phase center of the seventh radiating branch 1121 is greater than

λ ₁ and less than

λ ₁ , the distance between the phase center of the sixth radiating stub 1112 and the phase center of the eighth radiating stub 1122 is greater than

λ ₂ and less than

λ ₂ . The second antenna combination 1200 includes a third antenna 1210 and a fourth antenna 1220. The third antenna 1210 includes a first radiation branch 1211 and a second radiation branch 1212. The first radiation branch 1211 is used to transmit signals of the first frequency band, and the second radiation Branch 1212 is used to transmit signals of the second frequency band; the fourth antenna 1220 includes a third radiation branch 1221 and a fourth radiation branch 1222, the third radiation branch 1221 is used to transmit signals of the first frequency band, and the fourth radiation branch 1222 is used to transmit The signal of the second frequency band. The distance between the phase center of the first radiating stub 1211 and the phase center of the third radiating stub 1221 is greater than

λ ₁ and less than

λ ₂ and less than

The first antenna combination 1110 includes a first antenna 1110 and a second antenna 1120. The first antenna 1110 includes a fifth radiation branch 1111 and a sixth radiation branch 1112. The fifth radiation branch 1111 is used to transmit signals in the first frequency band, and the sixth radiation branch The branch 1112 is used to transmit signals of the second frequency band; the second antenna 1120 includes a seventh radiating branch 1121 and an eighth radiating branch 1122, the seventh radiating branch 1121 is used for transmitting signals of the first frequency band, and the eighth radiating branch 1122 is used for transmitting The signal of the second frequency band. The distance between the phase center of the fifth radiating stub 1111 and the phase center of the seventh radiating stub 1121 is greater than

λ ₁ and less than

λ ₂ and less than

λ ₂ . Its implementation principle and technical effect are similar to the second antenna combination 1200 in the above embodiment shown in FIG. 9 , and will not be repeated here.

The second antenna combination 1200 provided in the embodiment of the present application is similar to the second antenna combination 1200 in the above-mentioned embodiment shown in FIG. 9 , and details are not repeated here.

Since the first antenna 1110 in the first antenna combination 1100 includes two radiation branches, respectively, the fifth radiation branch 1111 for transmitting signals in the first frequency band, and the sixth radiation branch for transmitting signals in the second frequency band Branch 1112. The second antenna 1120 includes two radiation branches, namely the seventh radiation branch 1121 for transmitting signals of the first frequency band, and the eighth radiation branch 1122 for transmitting signals of the second frequency band. In a possible situation, the distance between the fifth radiating branch 1111 and the sixth radiating branch 1112 is greater than the third preset threshold, and the distance between the seventh radiating branch 1121 and the eighth radiating branch 1122 is greater than the fourth preset The threshold is equivalent to that the UWB antenna array 1000 is divided into four parts, and these four parts can be independently set in different areas of the electronic device.

In the embodiment of the present application, the UWB antenna array works in the first frequency band and the second frequency band. The UWB antenna array includes a first antenna combination and a second antenna combination. The first antenna combination is used to measure the angle in the horizontal direction, and the second antenna The combination is used for angle measurement in the vertical direction, and the antennas in the first antenna combination do not overlap with the antennas in the second antenna combination; the first antenna combination includes the first antenna 1110 and the second antenna, and the first antenna includes the fifth radiation branch and the sixth radiation branch, the fifth radiation branch is used to transmit the signal of the first frequency band, the sixth radiation branch is used to transmit the signal of the second frequency band; the second antenna includes the seventh radiation branch and the eighth radiation branch, the seventh radiation branch It is used to transmit signals of the first frequency band, the eighth radiation branch is used to transmit signals of the second frequency band, and the distance between the phase center of the fifth radiation branch and the phase center of the seventh radiation branch is greater than

λ ₁ and less than

λ ₁ , the distance between the phase center of the sixth radiating stub and the phase center of the eighth radiating stub is greater than

λ ₂ and less than

λ ₂ and λ ₁ are the wavelengths corresponding to the first frequency band, and λ ₂ is the wavelength corresponding to the second frequency band. The second antenna combination includes a third antenna and a fourth antenna, the third antenna includes a first radiation branch and a second radiation branch, the first radiation branch is used to transmit signals of the first frequency band, and the second radiation branch is used to transmit signals of the second frequency band The fourth antenna includes a third radiating branch and a fourth radiating branch, the third radiating branch is used to transmit the signal of the first frequency band, and the fourth radiating branch is used to transmit the signal of the second frequency band. The distance between the phase center of the first radiating stub and the phase center of the third radiating stub is greater than

λ ₁ and less than

λ ₁ The distance between the phase center of the second radiating branch and the phase center of the fourth radiating branch is greater than

λ ₂ and less than

λ ₂ . The lengths of the first radial branch and the third radial branch are

λ ₁ , the lengths of the second radial stub and the fourth radial stub are

λ ₂ . Wherein, _λ1 is the wavelength corresponding to the first frequency band, and _λ2 is the wavelength corresponding to the second frequency band. That is to say, the UWB antenna array provided by the embodiment of the present application is equivalent to being divided into four parts and four different areas independently arranged on the electronic device, which further improves the flexibility of laying out electronic devices on the electronic device.

The above embodiments focus on describing the UWB antenna array working in dual frequency bands. In a possible case, the UWB antenna array can only work in one frequency band. The following describes in detail the embodiment shown in FIG. 12 .

In one example, the UWB antenna array operates on a single frequency band. Exemplarily, the UWB antenna array works in the first frequency band. As shown in Figure 12, the UWB antenna array 1000 includes a first antenna combination 1100 and a second antenna combination 1200, the first antenna combination 1100 is used to measure the angle in the horizontal direction, and the second antenna combination 1200 is used to measure the angle in the vertical direction Measurement, the antennas in the first antenna combination 1100 do not overlap with the antennas in the second antenna combination 1200; the first antenna combination 1100 includes the first antenna 1110 and the second antenna 1120, and the second antenna combination 1200 includes the third antenna 1210 and the second antenna 1200 Four antennas 1220, the length of the radiation branches of the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220 is

λ ₁ , where λ ₁ is the wavelength corresponding to the first frequency band. The distance between the phase center of the first antenna 1110 and the phase center of the second antenna 1120 is greater than

λ ₁ and less than

λ ₁ , the distance between the phase center of the third antenna 1210 and the phase center of the fourth antenna 1220 is greater than

λ ₁ and less than

λ ₁ .

The UWB antenna array works in the first frequency band, so when setting the distance between the first antenna 1110 and the second antenna 1120, the third antenna 1210 and the fourth antenna 1220, only the wavelength of one frequency band needs to be considered, that is, the first The distance between the phase center of the antenna 1110 and the phase center of the second antenna 1120 is greater than

λ ₁ and less than

λ ₁ , where λ ₁ is the wavelength corresponding to the first frequency band.

In the embodiment of the present application, the UWB antenna array works in the first frequency band, and the length of the radiation stub is

λ ₁ The first antenna, the second antenna, the third antenna and the fourth antenna can make the performance of each antenna good, thereby making the performance of the UWB antenna array good, and improving the accuracy of angle measurement using the UWB antenna array.

Likewise, the first antenna 1100, the second antenna 1120, the third antenna 1210, and the fourth antenna 1220 may be antennas with simple structures, such as microstrip antennas. The lengths of the radiation branches of the first antenna 1100 , the second antenna 1120 , the third antenna 1210 and the fourth antenna 1220 can be determined only according to the wavelength of the first frequency band. That is, the lengths of the radiation stubs of the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220 are

λ ₁ .

In the embodiment of the present application, the distance between the phase center of the first antenna and the phase center of the second antenna is greater than

λ ₁ and less than

λ ₁ , the distance between the phase center of the third antenna and the phase center of the fourth antenna is greater than

λ ₁ and less than

λ ₁ , which makes the angle measurement in the horizontal direction more accurate by using the first antenna combination, and makes the angle measurement in the vertical direction more accurate by using the second antenna combination, thereby improving the performance of the UWB antenna using the first antenna combination and the second antenna combination. The angle measurement of the array is more accurate.

The above focuses on how the UWB antenna array 1000 implements UWB angle measurement. The following focuses on how the UWB antenna array 1000 implements the radar ranging function.

Since the distance between the first antenna combination 1100 and the second antenna combination 1200 is greater than the preset threshold, the isolation between the antennas in the first antenna combination 1100 and the antennas in the second antenna combination 1200 is relatively large . In this way, the antennas in the first antenna combination 1100 and the antennas in the second antenna combination 1200 can be combined to implement the radar function. For example, one antenna in the first antenna combination 1100 can be used as a radar transmitting antenna, and one antenna in the second antenna combination 1200 can be used as a radar receiving antenna; or, one antenna in the second antenna combination 1200 can be used as a radar transmitting antenna. An antenna, one antenna in the first antenna combination 1100 may serve as a receiving antenna of the radar.

A UWB antenna array usually uses a switch to control the opening and closing of each antenna. Exemplarily, the circuit logic diagram of the UWB antenna array shown in FIG. 5 is shown in FIG. 13 .

As shown in FIG. 13 , the circuit logic diagram includes a UWB control unit, a filter, a switch, an A0 antenna 1300, and the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220 in the UWB antenna array 1000 . Switches include double pole three throw switches and single pole single throw switches. Wherein, the switch is connected with the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220, and is used to control the opening and closing of the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220. closure. GPIO1 and GPIO2 control the connection relationship between the transmitting channel, receiving channel 1 and A0 antenna 1300, the first antenna 1100, and the third antenna 1200, and control the connection relationship between receiving channel 2 and the second antenna 1120 and the fourth antenna 1220 through GPIO3. The specific control timing is shown in Table 1.

Table 1

When GPIO1 is 0 and GPIO2 is 0, the A0 antenna 1300 is on the transmission channel. At this time, the signal can be transmitted through the A0 antenna 1300, and the signal can be received through any other antenna that does not share a switch with the A0 antenna 1300 to realize the distance measurement function.

When GPIO1 is 1, GPIO2 is 1, and GPIO3 is 1, then the third antenna 1210 is on the receiving channel 1, and the fourth antenna 1220 is on the receiving channel 2, and the third antenna 1210 and the fourth antenna 1220 are used to carry out the vertical direction Angle measurement.

When GPIO1 is 0, GPIO2 is 1, and GPIO3 is 0, the first antenna 1110 is on the receiving channel 1, and the second antenna 1120 is on the receiving channel 2, and the angle in the horizontal direction is carried out through the first antenna 1110 and the second antenna 1120 Measurement.

When GPIO1 is 0, GPIO2 is 1, and GPIO3 is 1, the first antenna 1110 is on the transmitting channel, the fourth antenna 1220 is on the receiving channel 2, the first antenna 1110 transmits the first signal, and the fourth antenna 1220 receives the second signal , wherein the second signal refers to a signal obtained by reflecting the first signal from the target object. It is equivalent to realizing the function of radar ranging through the first antenna 1110 and the fourth antenna 1220 .

The first antenna 1110, the third antenna 1210 and the A0 antenna 1300 shown in FIG. 1110 and the third antenna 1210 can be used as the transmitting antenna of the radar. It should be understood that the connection relationship shown in FIG. 13 is only an example.

In addition to the example shown in FIG. 13 , the connection relationship between each antenna and the transmit channel/receive channel provided in the embodiment of the present application includes but is not limited to the following.

1. The first antenna 1110, the fourth antenna 1220 and the A0 antenna 1300 are connected through a double-pole three-throw switch, so that the first antenna 1110 and the fourth antenna 1220 can be switched to the transmission channel, so that the first antenna 1110 and the second antenna The four antennas 1220 may serve as transmitting antennas of the radar. When the first antenna 1110 is used as the transmitting antenna of the radar, the second antenna is generally used to combine another antenna in 1200, that is, the third antenna 1210 is used as the receiving antenna. When the fourth antenna 1220 is used as the transmitting antenna of the radar, generally another antenna in the first antenna combination 1100, that is, the second antenna 1120 is used as the receiving antenna of the radar.

2. The second antenna 1120, the third antenna 1210 and the A0 antenna 1300 are connected through a double-pole three-throw switch, so that the second antenna 1120 and the third antenna 1210 can be switched to the transmission channel, so that the second antenna 1120 and the third antenna The three antennas 1210 can be used as the transmitting antennas of the radar. When the second antenna 1120 is used as the transmitting antenna of the radar, the other antenna in the second antenna combination 1200, that is, the fourth antenna 1220 is generally used as the receiving antenna. When the third antenna 1210 is used as the transmitting antenna of the radar, the other antenna in the first antenna combination 1100, that is, the first antenna 1110 is generally used as the receiving antenna of the radar.

3. The second antenna 1120, the fourth antenna 1220 and the A0 antenna 1300 are connected through a double-pole three-throw switch, so that the first antenna 1110 and the fourth antenna 1220 can be switched to the transmission channel, so that the first antenna 1110 and the second antenna The four antennas 1220 may serve as transmitting antennas of the radar. When the second antenna 1120 is used as the transmitting antenna of the radar, the other antenna in the second antenna combination 1200, that is, the third antenna 1210 is usually used as the receiving antenna. When the fourth antenna 1220 is used as the transmitting antenna of the radar, the other antenna in the first antenna combination 1100, that is, the first antenna 1110 is usually used as the receiving antenna of the radar.

It should be understood that the A0 antenna 1300 may also serve as a transmitting antenna of the radar. When the A0 antenna 1300 is used as a radar transmitting antenna, any antenna that does not share a switch with the A0 antenna 1300 can be used as a radar receiving antenna. As shown in FIG. 6 , when the A0 antenna 1300 is used as a radar transmitting antenna, the second antenna 1120 and the fourth antenna 1220 can be used as a radar receiving antenna.

The structure of each antenna in the UWB antenna array 1000 may be as shown in FIG. 14 . For example, the first antenna 1110 in the UWB antenna array 1000 may be a patch antenna with a rectangular structure, as shown in (a) in FIG. 14 . The first antenna 1110 may also be an antenna with a microstrip line as a radiation stub, as shown in (b) in FIG. 14 . The first antenna 1110 may be a coupled half-wave antenna composed of two parallel microstrip lines, as shown in (c) in FIG. 14 . The first antenna 1110 may also be a dual-coupled half-wave antenna composed of two microstrip lines parallel to each other and a microstrip line perpendicular to the above two microstrip lines, as shown in (d) of FIG. 14 .

In a possible situation, part of the antennas in the UWB antenna array 1000 may also be frame antennas, that is, radiation branches are set in the frame of the electronic device to realize the function of the antenna.

It should be understood that the distance between the first antenna combination 1100 and the second antenna combination 1200 is greater than a preset threshold, which may be that the distance between all the antennas in the first antenna combination 1100 and all the antennas in the second antenna combination 1200 is greater than the preset threshold. Setting the threshold may also mean that the distance between some antennas in the first antenna combination 1100 and some antennas in the second antenna combination 1200 is greater than a preset threshold, which is not limited in this embodiment of the present application.

In an example, the distance between the first antenna 1110 and the third antenna 1210 and the fourth antenna 1220 is greater than a preset threshold. The distance between the second antenna 1120 and the third antenna 1210 and the fourth antenna 1220 is greater than a preset threshold.

In an example, the distance between the first antenna 1110 and the third antenna 1210 is not greater than a preset threshold, and the distance between the first antenna 1110 and the fourth antenna 1220 is greater than a preset threshold. The distance between the second antenna 1120 and the third antenna 1210 is not greater than the preset threshold, and the distance between the second antenna 1120 and the fourth antenna 1220 is greater than the preset threshold.

In an example, the distance between the first antenna 1110 and the third antenna 1210 is not greater than a preset threshold, and the distance between the first antenna 1110 and the fourth antenna 1220 is greater than a preset threshold. The distance between the second antenna 1120 and the third antenna 1210 is not greater than a preset threshold, and the distance between the second antenna 1120 and the fourth antenna 1220 is not greater than a preset threshold.

The distance between the first antenna combination 1100 and the second antenna combination 1200 is greater than a preset threshold, and the isolation between the antennas in the first antenna combination 1100 and the antennas in the second antenna combination 1200 becomes larger. Exemplarily, when the isolation between the antennas in the first antenna combination 1100 and the antennas in the second antenna combination is greater than -35dB, when the antennas in the first antenna combination 1100 transmit signals in the target frequency band, the second The antennas in the antenna combination 1200 can receive signals in the same frequency band, and there is no interference between received signals and transmitted signals. In this way, the antennas in the first antenna combination 1100 and the antennas in the second antenna combination 1200 can be combined to implement the radar function.

Exemplarily, in the case where the first antenna 1110 in the first antenna combination 1100 is used as the transmitting antenna of the radar, and the third antenna 1210 in the second antenna combination 1200 is used as the receiving antenna of the radar, the first antenna 1110 can be configured according to the preset The frequency periodically transmits the first signal, and correspondingly, the third antenna 1210 can periodically receive the corresponding second signal, and according to the first signal and the corresponding second signal, the distance between the target object and the UWB antenna array can be determined Variety. For example, by measuring the distance change between the UWB antenna array and the chest cavity of the human body, the breathing rate of the human body can be determined.

In the embodiment of the present application, the antennas in the first antenna combination used for measuring the angle in the horizontal direction in the UWB antenna array do not coincide with the antennas in the second antenna combination used for measuring the angle in the vertical direction, and The minimum distance between the first antenna combination and the second antenna combination is greater than the preset threshold, so that the isolation between the antennas in the first antenna combination and the antennas in the second antenna combination becomes larger, so that in the first antenna combination The antenna in the antenna can be combined with the antenna in the second antenna combination to realize the function of radar ranging, that is to say, the UWB antenna array provided by the embodiment of the present application can simultaneously realize the function of radar ranging in the case of realizing UWB ranging. Function.

In one example, optionally, the distance between the second antenna 1120 and the third antenna 1210 is not greater than a preset threshold, the distance between the first antenna 1110 and the fourth antenna 1220 is greater than a preset threshold, and the first antenna 1110 The fourth antenna 1220 is used for transmitting the first signal, and the fourth antenna 1220 is used for receiving the second signal, wherein the second signal refers to the signal reflected by the first signal through the target object.

It should be understood that the embodiment of the present application does not limit specific functions of the first antenna 1110 , the second antenna 1120 , the third antenna 1210 , and the fourth antenna 1220 . The distance defined here between the second antenna 1120 and the third antenna 1210 is not greater than the preset threshold, and the distance between the first antenna 1110 and the fourth antenna 1220 is greater than the preset threshold, just to limit the positions between the antennas relationship, that is to say, the distance between one antenna (second antenna 1120) in the first antenna combination 1100 and one antenna (third antenna 1210) in the second antenna combination 1200 is small, and the first antenna combination 1100 The distance between the other antenna (first antenna 1110 ) in the group 1200 and the other antenna (the fourth antenna 1220 ) in the second antenna combination 1200 is relatively large. It is equivalent to taking advantage of the relatively long distance between the other antenna (the first antenna 1110) in the first antenna combination 1100 and the other antenna (the fourth antenna 1220) in the second antenna combination 1200, and a relatively high degree of isolation. Better realize the function of radar.

The minimum distance between the first antenna combination 1100 and the second antenna combination 1200 refers to the closest point between the first antenna combination 1100 and the second antenna combination 1200, and the point between the second antenna combination 1200 and the first antenna combination 1100 The distance between the closest points. Exemplarily, as shown in FIG. 15 , the minimum distance between the first antenna combination 1100 and the second antenna combination 1200 is d.

Optionally, the antennas in the first antenna combination that are far away from the second antenna combination and the antennas in the second antenna combination that are far away from the first antenna combination are used for radar ranging.

The antennas in the first antenna combination 1100 that are far away from the second antenna combination 1200 refer to the antennas in the first antenna combination 1100 that are far away from the second antenna combination 1200, and the antennas in the second antenna combination 1200 that are far away from the first antenna combination 1100 It is the antenna farther away from the first antenna combination 1100 in the second antenna combination 1200 .

Exemplarily, as shown in FIG. 15 , the antenna in the first antenna combination 1100 that is far away from the second antenna combination 1200 is the first antenna 1110 , and the distance between the second antenna combination 1200 and the first antenna combination 1100 is The farther antenna is the fourth antenna 1220 . At this time, the first antenna 1110 may be used as a transmitting port of the radar, and the fourth antenna 1220 may be used as a receiving port of the radar. The first antenna 1110 is used to transmit a first radar signal, and the fourth antenna 1220 is used to receive a second radar signal, wherein the second radar signal refers to a signal reflected by a target object from the first radar signal.

In an example, as shown in FIG. 16 , optionally, the antennas in the first antenna combination 1100 are patch antennas, and the antennas in the second antenna combination 1200 are frame antennas.

Exemplarily, the mobile phone 200 is taken as an example of the above-mentioned electronic device. The mobile phone 200 provided in the embodiment of the present application may be a mobile phone with a curved screen or a mobile phone with a flat screen. In the embodiment of the present application, a mobile phone with a flat screen is used as an example for illustration. Fig. 17 and Fig. 18 respectively show the overall structure and split structure of the mobile phone 200. The display screen 21 of the mobile phone 200 provided in the embodiment of the present application may be a water drop screen, a notch screen, a full screen or a hole-digging screen (see Fig. 17 ). shown), for example, the display screen 21 is provided with an opening 211, and the following description takes a hole-digging screen as an example for illustration.

Referring to Fig. 18, the mobile phone 200 may include: a display screen 21, a middle frame 22, a rear shell 25 and a battery 24 between the middle frame 22 and the rear shell 25, wherein the battery 24 may be located on the middle frame 22 towards the rear shell 25 (as shown in FIG. 18 ), or the battery 24 can be arranged on the side of the middle frame 22 facing the display screen 21, for example, the side of the middle frame 22 facing the rear shell 25 can have a battery compartment (not shown in the figure) , The battery 24 is installed in the battery compartment. In some other examples, the mobile phone 200 can also include a circuit board 23, wherein the circuit board 23 can be arranged on the middle frame 22, for example, the circuit board 23 can be arranged on the side of the middle frame 22 facing the rear shell 25 (as shown in FIG. 18), or the circuit board 23 can be arranged on the side of the middle frame 22 facing the display screen 21, and the display screen 21 and the rear case 25 are respectively located on both sides of the middle frame 22.

Referring to Figure 18, the top frame 2221 and the bottom frame 2222 are set opposite to each other, the left frame 2223 is set opposite to the right frame 2224, and the top frame 2221 is respectively connected to one end of the left frame 2223 and one end of the right frame 2224 in rounded corners. , the bottom frame 2222 is respectively connected to the other end of the left frame 2223 and the other end of the right frame 2224 in rounded corners, thereby jointly forming a rounded rectangular area. The ground plane of the rear shell is disposed in the rounded rectangular area, and is respectively connected to the top frame 2221 , the bottom frame 2222 , the left frame 2223 and the right frame 2224 . It can be understood that the ground plane of the rear case may be the rear case 25 of the mobile phone 200 .

The back shell 25 may be a metal back shell, a glass back shell, a plastic back shell, or a ceramic back shell. In the embodiment of the present application, the material of the back shell 25 is not limited, and Not limited to the above examples.

It should be noted that, in some examples, the rear shell 25 of the mobile phone 200 can be connected with the frame 222 to form a unibody rear shell. For example, the mobile phone 200 can include: a display screen 21, a metal middle plate 221 and a rear shell. The back shell can be formed by the frame 222 and the back shell 25 in one piece (Unibody), so that the circuit board 23 and the battery 24 are located in the space enclosed by the metal middle plate 221 and the back shell.

The frame antenna may refer to an antenna disposed on the frame 222, wherein the radiation stub of the frame antenna is disposed on the frame 222, and a filling medium is disposed around the radiation stub.

The frame antenna may be any one of an inverted-F antenna, a monopole antenna, a dipole antenna, and a left-hand antenna.

It should be understood that since the embodiment of the present application does not limit the functions of the first antenna combination 1100 and the second antenna combination 1200, the antennas in the first antenna combination 1100 referred to at this time are patch antennas, and the antennas in the second antenna combination 1200 The antennas are frame antennas, just to illustrate that the antennas in the first antenna combination 1100 are different from the antennas in the second antenna combination 1200, one of which is a patch antenna, and the other is a frame antenna. The antennas in the first antenna combination 1100 are frame antennas, and the antennas in the second antenna combination 1200 are patch antennas, which are also within the protection scope of the embodiments of the present application.

For ease of description, the antennas in the first antenna combination 1100 are patch antennas and the antennas in the second antenna combination 1200 are frame antennas for description.

Exemplarily, the third antenna 1210 and the fourth antenna 1220 may be as shown in FIG. Radiation stub, feed point 1221 and ground point 1222 .

Exemplarily, the third antenna 1210 and the fourth antenna 1220 can be shown in FIG. 20, wherein, the third antenna 1210 includes an inverted F-shaped metal radiation branch and a feed point; the fourth antenna 1220 includes an inverted F-shaped metal radiation stubs and feed points. It should be understood that an antenna using an inverted F-shaped metal radiating stub is generally called a picofarad antenna (Planar Inverted F-shaped Antenna, PIFA).

It should be understood that the third antenna 1210 and the fourth antenna 1220 may be frame antennas with the same structure, or frame antennas with different structures, which is not limited in this embodiment of the present application.

The third antenna 1210 and the fourth antenna 1220 may be any one of an inverted-F antenna, a monopole antenna, a dipole antenna, and a left-hand antenna. FIG. 19 and FIG. 20 are just two examples, and specific forms of the third antenna 1210 and the fourth antenna 1220 are not limited.

Optionally, a metal body 1230 is disposed between the third antenna 1210 and the fourth antenna 1220 , and the metal body 1230 is used to isolate the third antenna 1210 and the fourth antenna 1220 .

The metal body 1230 is a grounded metal body, which is equivalent to adding a grounded metal block for enhancing isolation between the third antenna 1210 and the fourth antenna 1220 . In this way, the isolation between the third antenna 1210 and the fourth antenna 1220 meets the requirements.

In the embodiment of the present application, a metal body is disposed between the third antenna and the fourth antenna, and the metal body is used to isolate the third antenna and the fourth antenna. This makes the isolation between the two frame antennas higher, which in turn makes the

In the UWB antenna array, the isolation between two antennas used for measuring the angle in the vertical direction is improved, and the accuracy of the angle measurement in the vertical direction of the UWB antenna array is improved.

In the case that the antenna in the first antenna combination 1100 is a patch antenna, and the antenna in the second antenna combination 1200 is also a patch antenna, when the antenna in the second antenna combination 1200 is used as the transmitting port of the radar, it can only be used in the second When there is no shield in front of the antenna of the antenna combination 1200, electromagnetic wave signals are emitted outwards for radar ranging. This will limit the function of the UWB antenna array to realize the radar. For example, each antenna in the UWB antenna array is a patch antenna and is located on the back of the mobile phone. When the mobile phone is placed on the table with the back facing down, the electromagnetic wave signal sent by each patch antenna will be reflected back by the table due to the influence of the table. Take a distance measurement.

Based on this, using the frame antenna as the antenna in the second antenna combination 1200 and as the transmitting antenna of the radar can avoid the influence of the angle of the electronic device on the radar ranging function of the UWB antenna array. Exemplarily, the antennas in the first antenna combination 1100 are patch antennas, the antennas in the second antenna combination 1200 are frame antennas, and when the antennas in the second antenna combination 1200 are used as radar transmitting antennas, they can At any angle, electromagnetic wave signals can be emitted for radar ranging, which is not affected by the current angle of the electronic device.

It should be understood that when the antennas in the first antenna combination 1100 are patch antennas and the antennas in the second antenna combination 1200 are frame antennas, the second antenna combination 1200 can be arranged at any position on the frame of the electronic device.

Exemplarily, as shown in (a) of FIG. 21 , the first antenna assembly 1100 is disposed above the camera, and the second antenna assembly 1200 is disposed on the frame on the right side of the camera. Alternatively, as shown in (b) of FIG. 21 , the first antenna assembly 1100 is disposed above the camera, and the second antenna assembly 1200 is disposed on the frame on the left side of the camera. Alternatively, as shown in (c) of FIG. 21 , the first antenna assembly 1100 is disposed above the camera, and the second antenna assembly 1200 is disposed on the frame below the battery. The embodiment of the present application does not limit the location of the second antenna assembly 1200, and here are only several examples.

During the ranging process of the UWB antenna array 1000, the A0 antenna 1300 is usually used for preliminary positioning and ranging of the target object. Since the positional relationship between the target object and the UWB antenna array 1000 is not clear, the A0 antenna 1300 is usually directional A better antenna, such as a frame antenna. The antenna used for angle measurement in a traditional UWB antenna array is usually a patch antenna, and the directivity of the patch antenna is usually poor.

In a possible situation, the antenna in the second antenna combination 1200 is a frame antenna, that is to say, the antenna in the second antenna combination 1200 is an antenna with good directivity, therefore, the antenna in the second antenna combination 1200 can be used The antenna replaces the transmitting antenna.

Optionally, the A0 antenna 1300 and the third antenna 1210 or the fourth antenna 1220 are the same antenna.

Exemplarily, the UWB antenna array 1000 may be shown in FIG. 22 , including: a first antenna combination 1100 and a second antenna combination 1200, wherein the antennas in the first antenna combination 1100 are patch antennas, and in the second antenna combination 1200 The antenna is a frame antenna. The A0 antenna 1300 is an antenna in the second antenna combination 1200 . For example, the A0 antenna 1300 is the third antenna 1210 .

When the A0 antenna 1300 is the third antenna 1210, the circuit logic diagram of the UWB antenna array is shown in FIG. 23 .

As shown in FIG. 23 , the circuit logic diagram includes a UWB control unit, a filter, a switch, an A0 antenna 1300 , a first antenna 1110 , a second antenna 1120 , a third antenna 1210 and a fourth antenna 1220 . Switches include double pole three throw switches and single pole single throw switches. Wherein, the switch is connected with the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220, and is used to control the opening and closing of the first antenna 1110, the second antenna 1120, the third antenna 1210 and the fourth antenna 1220. closure. GPIO1 is used to control the connection relationship between the transmitting channel, receiving channel 1 and A0 antenna 1300 , the first antenna 1100 , and the third antenna 1200 , and the connection relationship between receiving channel 2 and the second antenna 1120 and the fourth antenna 1220 is controlled through GPIO2. The specific control timing is shown in Table 2.

Table 2

This circuit logic diagram is applicable to the case where the antennas in the second antenna combination 1200 in the UWB antenna array 1000 are frame antennas. As shown in FIG. 22 , the A0 antenna 1300 may be the third antenna 1210 .

When GPIO1 is 0 and GPIO2 is 0, the A0 antenna 1300, that is, the third antenna 1210 is on the transmission channel. At this time, the signal can be transmitted through the A0 antenna 1300, and through any other antenna that does not share a switch with the A0 antenna 1300 Receive the signal and realize the ranging function. Exemplarily, the second antenna 1120 is selected for receiving signals.

When GPIO1 is 1 and GPIO2 is 1, the third antenna 1210 is on the receiving channel 1, and the fourth antenna 1220 is on the receiving channel 2, and the angle measurement in the vertical direction is performed through the third antenna 1210 and the fourth antenna 1220 .

When GPIO1 is 0 and GPIO2 is 0, the first antenna 1110 is on the receiving channel 1, and the second antenna 1120 is on the receiving channel 2, and the angle measurement in the horizontal direction is performed through the first antenna 1110 and the second antenna 1120 .

When GPIO1 is 1 and GPIO2 is 0, the first antenna 1110 is on the transmitting channel, the fourth antenna 1220 is on the receiving channel 2, the first antenna 1110 transmits the first signal, and the fourth antenna 1220 receives the second signal, wherein the first The second signal refers to a signal obtained by reflecting the first signal from a target object. It is equivalent to realizing the function of radar ranging through the first antenna 1110 and the fourth antenna 1220 .

The first antenna 1110 shown in Figure 23 and the third antenna 1210 are connected through a double-pole double-throw switch, so that the first antenna 1110 and the third antenna 1210 can be switched to the transmission channel, so that the first antenna 1110 and the third antenna 1210 can be used as the transmitting antenna of the radar. It should be understood that the connection relationship shown in FIG. 23 is only an example.

The present application also provides an electronic device, which includes the UWB antenna array provided by the above-mentioned embodiments.

In an example, the electronic device further includes a switch, which is used to control the opening and closing of the first antenna, the second antenna, the third antenna and the fourth antenna in the UWB antenna array.

In an example, the A0 antenna, the first antenna, the second antenna, the third antenna and the fourth antenna in the UWB antenna array are connected to the switch, and the electronic device is in the first state when the general input and output interface GPIO of the switch is in the first state, Make the A0 antenna in the transmitting channel, the second antenna or the fourth antenna in the receiving channel, and perform radar ranging through the A0 antenna and the second antenna, or perform radar ranging through the A0 antenna and the fourth antenna; the first antenna and the fourth antenna The second antenna is used for measuring the angle in the first direction, and the third antenna and the fourth antenna are used for measuring the angle in the second direction.

In an example, when the GPIO of the switch is in the second state, the electronic device makes the first antenna in the transmit channel, and the fourth antenna in the receive channel, and performs radar ranging with the fourth antenna through the first antenna; or, The third antenna is in the transmitting channel, and the second antenna is in the receiving channel, and radar ranging is performed through the third antenna and the second antenna.

In an example, when the GPIO of the switch is in the third state, the electronic device makes the A0 antenna in the transmit channel, the first antenna, the second antenna, the third antenna and the fourth antenna in the receive channel, and communicate with the A0 antenna through the A0 antenna. Any one of the antennas performs UWB ranging on the target object, measures the angle of the target object in the first direction through the A0 antenna, the first antenna, and the second antenna, and performs second angle measurement on the target object through the A0 antenna, the third antenna, and the fourth antenna. An angular measure of a direction, the first direction being different from the second direction.

In one example, the first antenna, the second antenna, the third antenna and the fourth antenna in the ultra-wideband antenna array are connected to the switch, wherein the third antenna is the same antenna as the A0 antenna, and the electronic device is connected to the general input of the switch When the output interface GPIO is in the third state, the first antenna is in the transmitting channel, the fourth antenna is in the receiving channel, and radar ranging is performed through the combination of the first antenna and the fourth antenna; or, the third antenna is in the transmitting channel , the second antenna is in the receiving channel, and the radar ranging is performed through the third antenna and the second antenna; the first antenna and the second antenna are used for the angle measurement of the first direction, and the third antenna and the fourth antenna are used for the second Angle measurement in two directions.

In an example, the third antenna is a frame antenna, and when the general input and output interface GPIO of the switch is in the fourth state of the electronic device, the third antenna is in the transmitting channel, and the first antenna, the fourth antenna or the second antenna is in the The channel is received, and the UWB ranging is performed through the third antenna and the first antenna, or the UWB ranging is performed through the third antenna and the fourth antenna, or the UWB ranging is performed through the third antenna and the second antenna.

The embodiment of the present application does not limit the type of the electronic device. Exemplarily, the electronic device may be, but not limited to, a mobile phone, a tablet computer, a smart speaker, a smart large screen (also called a smart TV), or a wearable device.

Exemplarily, FIG. 24 shows a schematic structural diagram of the electronic device 100 . The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus,

USB) interface 130, charging management module 140, power management module 141, battery 142, antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone jack 170D , a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, bone conduction sensor 180M, etc.

It can be understood that, the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100 . In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown in the figure, or combine certain components, or separate certain components, or arrange different components. The illustrated components can be realized in hardware, software or a combination of software and hardware.

The processor 110 may include one or more processing units, for example: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU) wait. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.

It can be understood that the interface connection relationship between the modules shown in the embodiment of the present application is only a schematic illustration, and does not constitute a structural limitation of the electronic device 100 . In other embodiments of the present application, the electronic device 100 may also adopt different interface connection manners in the foregoing embodiments, or a combination of multiple interface connection manners.

The wireless communication function of the electronic device 100 can be realized by the antenna 1 , the antenna 2 , the mobile communication module 150 , the wireless communication module 160 , a modem processor, a baseband processor, and the like.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in electronic device 100 may be used to cover single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 can provide wireless communication solutions including 2G/3G/4G/5G applied on the electronic device 100 . The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like. The mobile communication module 150 can receive electromagnetic waves through the antenna 1, filter and amplify the received electromagnetic waves, and send them to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modem processor, and convert it into electromagnetic waves through the antenna 1 for radiation. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be set in the processor 110 . In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be set in the same device.

A modem processor may include a modulator and a demodulator. Wherein, the modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator sends the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal is passed to the application processor after being processed by the baseband processor. The application processor outputs sound signals through audio equipment (not limited to speaker 170A, receiver 170B, etc.), or displays images or videos through display screen 194 . In some embodiments, the modem processor may be a stand-alone device. In some other embodiments, the modem processor may be independent of the processor 110, and be set in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (Wireless Fidelity, Wi-Fi) network), bluetooth (bluetooth, BT), global navigation satellite, etc. applied on the electronic device 100. System (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 . The wireless communication module 160 can also receive the signal to be sent from the processor 110 , frequency-modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.

In some embodiments, the antenna 1 of the electronic device 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the electronic device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), broadband Code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), the fifth generation wireless communication system ( 5G, the 5th Generation of wireless communication system), BT, GNSS, WLAN, NFC, FM, and/or IR technology, etc. The GNSS may include a global positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a Beidou navigation satellite system (beidou navigation satellite system, BDS), a quasi-zenith satellite system (quasi -zenith satellite system (QZSS) and/or satellite based augmentation systems (SBAS).

It should be noted that any electronic device mentioned in the embodiments of the present application may include more or less modules in the electronic device 100 .

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments. It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application. In addition, in the description of the present specification and appended claims, the terms "first", "second", "third" and so on are only used to distinguish descriptions, and should not be understood as indicating or implying relative importance. Reference to "one embodiment" or "some embodiments" or the like in the specification of the present application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless specifically stated otherwise.

Finally, it should be noted that: the above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto, and any changes or replacements within the technical scope disclosed in the application shall be covered by this application. within the scope of the application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

An ultra-wideband UWB antenna array, characterized in that the UWB antenna array includes: a first antenna combination and a second antenna combination, the first antenna combination includes a first antenna and a second antenna, and the second antenna combination including a third antenna and a fourth antenna, the antennas in the first antenna combination do not overlap with the antennas in the second antenna combination, and the minimum distance between the first antenna combination and the second antenna combination is greater than a preset threshold, The first antenna combination is used to measure the angle of the target object in a first direction, and the second antenna combination is used to measure the angle of the target object in a second direction, and the first direction is different from the first direction In two directions, one antenna in the first antenna combination and one antenna in the second antenna combination are also used for radar ranging.
The UWB antenna array according to claim 1, wherein the UWB antenna array further comprises an A0 antenna, and the A0 antenna is used to send a first signal to the target, and the first signal is used to indicate the The target object returns a second signal or a third signal, the second signal is used for UWB distance measurement, and the third signal is used for UWB angle measurement; one antenna in the combination of the A0 antenna and the first antenna, Or one antenna in the combination with the second antenna is also used for radar ranging.
The UWB antenna array according to claim 2, wherein the first antenna, the second antenna, the third antenna and the fourth antenna are patch antennas.
The UWB antenna array according to claim 3, wherein the antennas in the first antenna combination that are far away from the second antenna combination and the antennas in the second antenna combination that are far away from the first antenna combination are used in radar ranging.
The UWB antenna array according to claim 2, wherein the first antenna and the second antenna are patch antennas, the third antenna and the fourth antenna are frame antennas; or the first antenna The first antenna, the second antenna, the third antenna, and the fourth antenna are frame antennas.
The UWB antenna array according to claim 5, wherein the frame antenna includes an inverted-F antenna, a monopole antenna, a dipole antenna and a left-hand antenna.
The UWB antenna array according to claim 5, wherein the A0 antenna is the same antenna as the third antenna or the fourth antenna.
The UWB antenna array according to any one of claims 1-7, wherein the first direction is perpendicular to the second direction.
The UWB antenna array according to any one of claims 1-8, wherein the distance between the phase center of the first antenna and the phase center of the second antenna is greater than 1/4λ and less than 1/4λ 2λ, the distance between the phase center of the third antenna and the phase center of the fourth antenna is greater than 1/4λ and less than 1/2λ; where λ is the wavelength corresponding to the working frequency band of the UWB antenna array.
An electronic device, characterized in that the electronic device comprises the ultra-wideband UWB antenna array according to any one of claims 1-9.
The electronic device according to claim 10, wherein the electronic device further comprises a switch, and the A0 antenna, the first antenna, the second antenna, the third antenna and the fourth antenna in the UWB antenna array are connected to the The switch is connected, and when the general input and output interface GPIO of the switch is in the first state, the electronic device makes the A0 antenna in the transmitting channel, the second antenna or the fourth antenna in the receiving channel, and Perform radar ranging through the A0 antenna and the second antenna, or use the A0 antenna and the fourth antenna for radar ranging; the first antenna and the second antenna are used for target detection The object is used to measure the angle of the first direction, and the third antenna and the fourth antenna are used to measure the angle of the target object in the second direction.
The electronic device according to claim 11, wherein, when the GPIO of the switch is in the second state, the electronic device makes the first antenna in the transmitting channel, and the fourth antenna in the receiving channel , and conduct radar ranging through the first antenna and the fourth antenna; or, make the third antenna in the transmitting channel, the second antenna in the receiving channel, and use the third antenna and the The second antenna performs radar ranging.
The electronic device according to claim 11 or 12, characterized in that, when the GPIO of the switch is in the third state, the electronic device makes the A0 antenna in the transmitting channel, and the first antenna, the The second antenna, the third antenna, and the fourth antenna are in the receiving channel, and perform UWB ranging on the target object through the A0 antenna and any antenna, and use the A0 antenna and the first antenna, The second antenna measures the angle of the target object in the first direction, and uses the A0 antenna, the third antenna, and the fourth antenna to measure the angle of the target object in the second direction, and the The first direction is different from the second direction.
The electronic device according to claim 10, wherein the electronic device comprises a switch, and the first antenna, the second antenna, the third antenna, and the second antenna in the ultra-wideband antenna array Four antennas are connected to the switch, wherein, the third antenna is the same antenna as the A0 antenna, and the electronic device makes the first The antenna is in the transmitting channel, the fourth antenna is in the receiving channel, and radar ranging is performed through the combination of the first antenna and the fourth antenna; or, the third antenna is in the transmitting channel, and the second antenna In the receiving channel, radar ranging is performed through the third antenna and the second antenna; the first antenna and the second antenna are used to measure the angle of the target object in the first direction, and the third antenna The antenna and the fourth antenna are used for measuring the angle of the target object in a second direction, and the first direction is different from the second direction.
The electronic device according to claim 14, wherein the third antenna is a frame antenna, and when the general input and output interface GPIO of the switch is in the fourth state, the electronic device makes the third antenna The antenna is in the transmitting channel, the first antenna, the fourth antenna or the second antenna is in the receiving channel, and UWB ranging is performed through the third antenna and the first antenna, or, through the second antenna The three antennas and the fourth antenna perform UWB ranging, or the third antenna and the second antenna perform UWB ranging.