Wireless signaling device and wireless signal detection method

Abstract

The present invention provides a wireless signaling device and a wireless signal output method. [Solution] The wireless signaling device has an antenna device. The antenna device has a transmitting antenna array and a receiving antenna array arranged in a first plane. The antenna device forms a narrow beamwidth antenna radiation pattern, which forms a flattened detection area, which forms a second plane substantially perpendicular to the first plane. The wireless signaling device is configured to detect spatial information of external objects within the flattened detection area, and the spatial information includes only two-dimensional spatial information in the second plane.

Description

Technical Field

[0001] The present disclosure relates to wireless signal technology, and in particular, to a wireless signal device and a wireless signal detection method.

Background Art

[0002] Wireless signal technology has been developed over many years. According to the type of transmission signal, wireless signals include pulse signals and continuous wave signals. Due to the rapid development of technology, frequency modulated continuous wave (FMCW) signals have been widely used in various fields in recent years. For example, FMCW signals are applied to touch fields for gesture detection. However, currently, gesture signals have the problem of poor recognition accuracy and still have room for improvement.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present disclosure provides a wireless signal device and a wireless signal detection method that can effectively improve the accuracy of touch detection.

Means for Solving the Problems

[0004] The radio signaling device of this disclosure includes a blackout device, a transmitting circuit, and a receiving circuit. The antenna device is configured to form a narrow beamwidth antenna radiation pattern. The antenna device includes a transmitting antenna array and a receiving antenna array. The transmitting antenna array is positioned in a first plane and is configured to transmit a transmit signal. The receiving antenna array is positioned in the first plane and is configured to receive a reflected signal, which is generated when the transmit signal is reflected by an external object. The transmitting circuit is configured to generate a transmit signal. The receiving circuit is configured to generate an internal signal according to the reflected signal, which relates to spatial information of an external object. The narrow beamwidth antenna radiation pattern forms a flattened detection area, which forms a second plane, and the first enclosed angle between the first plane and the second plane is 80 degrees or more and 100 degrees or less. The radio signaling device is configured to detect spatial information of an external object within the flattened detection area, and the spatial information includes only two-dimensional spatial information in the second plane.

[0005] A wireless signal detection method is also provided in this disclosure. The wireless signal detection method includes the following operations: A narrow beamwidth antenna radiation pattern is formed, the narrow beamwidth antenna radiation pattern forms a flattened detection area, the flattened detection area forms a second plane. A transmission signal is transmitted. A reflected signal is received, the reflected signal is generated as a result of the transmission signal being reflected by an external object, the external object being located in the flattened detection area. An internal signal is generated according to the reflected signal, the internal signal is related to the spatial information of the external object, the spatial information includes only two-dimensional spatial information in the second plane. [Effects of the Invention]

[0006] Based on the above, the antenna device of the wireless signaling device of the embodiment of the present disclosure includes a transmitting antenna array and a receiving antenna array arranged in a first plane. The antenna device may form a narrow beamwidth antenna radiation pattern. The narrow beamwidth antenna radiation pattern may form a flattened detection area. The flattened detection area forms a second plane substantially perpendicular to the first plane. The wireless signaling device may be configured to detect spatial information of an external object in the flattened detection area, and the spatial information includes only two-dimensional spatial information in the second plane. In this way, by using the antenna device to detect only two-dimensional spatial information of an external object in a flattened detection area in the second plane, detection errors in the third dimension that were caused by detecting three-dimensional spatial information can be reduced, improving the accuracy of touch detection and reducing the amount of information calculation data. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic diagram of a wireless signaling device that generates a flattened detection area according to an embodiment of the present disclosure. [Figure 2] This is a schematic diagram of an antenna device according to an embodiment of the present disclosure. [Figure 3] This is a schematic diagram of the radiation area of ​​a narrow beamwidth antenna radiation pattern in the YZ plane according to an embodiment of the present disclosure. [Figure 4] This is a schematic diagram of a narrow beamwidth antenna radiation pattern according to an embodiment of the present disclosure. [Figure 5] This is a schematic diagram of touch operation of an external object according to an embodiment of the present disclosure. [Figure 6] This is a schematic diagram of a wireless signaling device according to an embodiment of the present disclosure. [Figure 7] This is a schematic diagram of an antenna device according to another embodiment of the present disclosure. [Figure 8] This is a schematic diagram of a wireless signaling device according to another embodiment of the present disclosure. [Figure 9] This is a schematic diagram of a wireless signaling device according to yet another embodiment of the present disclosure. [Figure 10]This is a flowchart of a wireless signal detection method according to an embodiment of the present disclosure. [Figure 11] This is a flowchart of a wireless signal detection method according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0008] To facilitate understanding of the aforementioned features and advantages of this disclosure, embodiments accompanied by drawings are described in detail below.

[0009] Figure 1 is a schematic diagram of a radio signaling device forming a flattened detection area according to an embodiment of the present disclosure, Figure 2 is a schematic diagram of an antenna device according to an embodiment of the present disclosure, and Figure 6 is a schematic diagram of a radio signaling device according to an embodiment of the present disclosure. Referring simultaneously to Figures 1, 2, and 6, the radio signaling device 100 may include an antenna device 102, a transmitting circuit 602, and a receiving circuit 604. The antenna device 102, the transmitting circuit 602, and the receiving circuit 604 may be incorporated into a radio signaling chip and arranged on a substrate B1. The radio signaling device 100 may be, for example, a radar device. The antenna device 102 may include a transmitting antenna array TARY1 and a receiving antenna array RARY1 (shown in Figure 2) arranged in a first plane. For example, the transmitting antenna array TARY1 and the receiving antenna array RARY1 may form a rectangular antenna array and be arranged on a substrate having side lengths D1 and D2. The side length D1 may be, for example, 12 mm, and the side length D2 may be, for example, 10 mm, but the disclosure is not limited thereto. The transmitting antenna array TARY1 is configured to transmit a transmit signal, and the receiving antenna array RARY1 is configured to receive a reflected signal generated when the transmit signal is reflected by an external object OB1 (e.g., a finger, but not limited thereto). The antenna device 102 may be configured to form a narrow beamwidth antenna radiation pattern. The narrow beamwidth antenna radiation pattern forms a flattened detection area. The flattened detection area forms a second plane. The second plane is substantially perpendicular to the first plane. Furthermore, the angle between the first plane and the second plane may be, for example, 80 degrees or more and 100 degrees or less. In this embodiment, the second plane may be, for example, the XY plane shown in Figure 1. The radio signaling device 100 may be configured to detect spatial information of the external object OB1 within the flattened detection area. The spatial information includes only two-dimensional spatial information in the second plane (e.g., the XY plane) formed by the flattened detection area.

[0010] In this embodiment, at least one of the transmitting antenna array TARY1 and the receiving antenna array RARY1 includes a plurality of antenna units arranged along a first direction in a first plane. The first direction in the first plane is substantially parallel to the normal direction of the second plane. Specifically, the angle between the first direction and the normal direction of the second plane is between 0 degrees and 10 degrees. In this embodiment, the first direction may be, for example, the Z-axis direction shown in Figures 1 and 2, and the second plane may be, for example, the XY plane shown in Figure 1. Specifically, the transmitting antenna array TARY1 may include one or more transmitting antenna groups, and if the transmitting antenna array TARY1 includes a plurality of transmitting antenna groups, the plurality of transmitting antenna groups are arranged along a second direction in the first plane, or substantially along a second direction in the first plane. On the other hand, the receiving antenna array RARY1 may include a plurality of receiving antenna groups arranged along a second direction, or substantially along a second direction. The second direction is substantially perpendicular to the normal of the second plane. Specifically, the angle between the second direction and the normal direction of the second plane is between 80 and 100 degrees. In this embodiment, the second direction may be, for example, the X-axis direction shown in Figures 1 and 2, and the second plane may be, for example, the XY plane shown in Figure 1. For example, as shown in Figure 2, in this embodiment, the transmitting antenna array TARY1 includes transmitting antenna groups TG1 and TG2 arranged along the X-axis direction, and the receiving antenna array RARY1 includes receiving antenna groups RG1 and RG2 arranged along the X-axis direction. Furthermore, in this embodiment, the transmitting antenna group TG1 includes a plurality of transmitting antenna units TX1 arranged along the first direction (for example, the Z-axis direction), the transmitting antenna group TG2 includes a plurality of transmitting antenna units TX2 arranged along the first direction, the receiving antenna group RG1 includes a plurality of receiving antenna units RX1 arranged along the first direction, and the receiving antenna group RG2 includes a plurality of receiving antenna units RX2 arranged along the first direction. The transmitting antenna units TX1 and TX2 and the receiving antenna units RX1 and RX2 may be, for example, patch antennas, but are not limited to them.

[0011] The transmitting antenna groups TG1 and TG2 can form a narrow beamwidth antenna radiation pattern by transmitting a first sub-transmit signal and a second sub-transmit signal, respectively (the transmitting signal transmitted by the transmitting antenna array TARY1 includes the first sub-transmit signal and the second sub-transmit signal). In this embodiment, each transmitting antenna group of the transmitting antenna array TARY1 includes four transmitting antenna units arranged along a first direction (e.g., the Z-axis direction) or substantially along a first direction, and each receiving antenna group of the receiving antenna array RARY1 includes four receiving antenna units arranged along a first direction or substantially along a first direction. However, in other embodiments, it is not necessary for both the transmitting antenna array TARY1 and the receiving antenna array RARY1 to include multiple antenna units arranged along a first direction or substantially along a first direction, and it is also possible for only at least one of the transmitting antenna array TARY1 and the receiving antenna array RARY1 to include multiple antenna units arranged along a first direction or substantially along a first direction. It is noteworthy that, in the antenna device 102, as the number of antenna units arranged along or substantially along the first direction increases, the range of the antenna radiation pattern formed by the antenna device 102 in the first direction decreases accordingly, thereby forming a narrow beamwidth antenna radiation pattern such as the narrow beamwidth antenna radiation pattern shown in Figures 1 and 3. Furthermore, if it is desired to form an antenna radiation pattern with an even narrower beam in the first direction, a considerable number of antenna units should be arranged in the first direction, and it should be noted that this will increase the size of the antenna device 102. However, the required size of the antenna device 102 can be controlled by selecting an appropriate frequency band. For example, the frequency band used by the radio signaling device 100 may be a frequency band above 24 GHz, thereby reducing the size of the antenna device 102 while achieving the same performance, which is beneficial for applications of wearable displays where size is limited (e.g., smartwatches and head-mounted display devices).

[0012] Specifically, referring to Figures 1 and 3 simultaneously, Figure 3 is a schematic diagram of the radiation area of ​​a narrow beamwidth antenna radiation pattern in the YZ plane according to an embodiment of the present disclosure. The narrow beamwidth antenna radiation pattern includes a first radiation area TA1, a second radiation area TA2, and a third radiation area TA3. The second radiation area TA2 is located between the first radiation area TA1 and the third radiation area TA3. The range of the first radiation area TA1 is wider than that of the second radiation area TA2, and the range of the third radiation area TA3 is wider than that of the second radiation area TA2. The second radiation area TA2 forms the flattened detection area described above. The distribution of the narrow beamwidth antenna radiation pattern in the YZ plane may be shown in Figure 3. For example, the second radiation area TA2 may be defined within a range of plus or minus 5 degrees with respect to the Y axis. For example, the first radiation area TA1 and the third radiation area TA3 may be defined, respectively, as being located greater than 5 degrees and less than minus 5 degrees with respect to the Y axis.

[0013] As described above, the transmitting antenna array TARY1 is configured to transmit a transmission signal, and the receiving antenna array RARY1 is configured to receive a reflected signal generated when the transmission signal is reflected by an external object OB1. When the external object OB1 is located in the first radiation area TA1 or the third radiation area TA3, the level of the reflected signal generated by the reflection of the external object OB1 is below a predetermined threshold, and when the external object OB1 is located in the second radiation area TA2, the level of the reflected signal generated by the reflection of the external object OB1 is above a predetermined threshold. Therefore, by comparing the level of the reflected signal with a predetermined threshold, it can be determined whether the external object OB1 is in contact with the flattened detection area formed by the second radiation area TA2. In this way, the touch detection range of the wireless signaling device 100 is limited to the flattened detection area formed by the second radiation area TA2, thereby preventing parts of the external object OB1 that are not used for touch operation (e.g., the palm of the hand, but not limited to this) from affecting the accuracy of the touch operation if those parts are located in the first radiation area TA1 or the third radiation area TA3. This will be explained further in the following paragraphs.

[0014] The transmitting circuit 602 and receiving circuit 604 of the wireless signaling device 100 may be implemented as shown in Figure 6. Furthermore, the wireless signaling device 100 may also include a processing circuit 606, a phase shifter 608, and a frequency synthesizer 610. The transmitting circuit 602 includes power amplifiers PA1 and PA2, and the receiving circuit 604 includes low-noise amplifiers LNA1 and LNA2. Furthermore, the receiving circuit 604 may further include a mixer MX, a filter F, and an analog-to-digital converter ADC. The transmitting circuit 602 is coupled to the phase shifter 608. The frequency synthesizer 610 is coupled to the phase shifter 608 and the receiving circuit 604. The receiving circuit 604 is further coupled to the processing circuit 606.

[0015] The transmitting circuit 602 is configured to transmit a transmission signal, and the receiving circuit 604 is configured to generate an internal signal according to the reflected signal generated when the transmission signal is reflected by the external object OB1. The internal signal relates to the spatial information of the external object OB1, i.e., the two-dimensional spatial information in the plane formed by the flattened detection area.

[0016] Furthermore, the antenna device 102 of the wireless signaling device 100 may also include transmitting antenna ports PT1 and PT2 and receiving antenna ports PR1 and PR2. Transmitting antenna groups TG1 and TG2 are coupled to transmitting antenna ports PT1 and PT2, respectively, and receiving antenna groups RG1 and RG2 are coupled to receiving antenna ports PR1 and PR2, respectively. Power amplifiers PA1 and PA2 may be coupled to transmitting antenna groups TG1 and TG2, respectively, via transmitting antenna ports PT1 and PT2, and low-noise amplifiers LNA1 and LNA2 may be coupled to receiving antenna groups RG1 and RG2, respectively, via receiving antenna ports PR1 and PR2. The frequency synthesizer 610 can generate a carrier signal ST. Power amplifiers PA1 and PA2 can transmit a first sub-transmission signal and a second sub-transmission signal to the outside via transmitting antenna groups TG1 and TG2, respectively. Low-noise amplifiers LNA1 and LNA2 can receive first and second sub-reflected signals via receiving antenna ports PR1 and PR2 (the reflected signals received by the receiving antenna array RARY1 include the first and second sub-reflected signals). The angular information of the external object OB1 in the XY plane (second plane) can be determined according to the first and second sub-reflected signals. The positional information of the external object OB1 in the XY plane can be determined by the angular information and the distance information determined by the first and second sub-reflected signals (the aforementioned two-dimensional spatial information includes the positional information of the external object OB1 in the XY plane). Therefore, in order to obtain the angular information of the external object OB1 in the XY plane (second plane), the antenna device 102 should include at least two receiving antenna ports PR1 and PR2, and the receiving antenna array RARY1 should include at least two receiving antenna groups RG1 and RG2, which are preferably arranged along a second direction (e.g., the X-axis direction) or substantially along a second direction. On the other hand, when the receiving antenna groups RG1 and RG2 are arranged along a first direction (e.g., the Z-axis direction), the acquired angular information lies in the YZ plane, which is negligible (e.g., unnecessary) information for this technology.

[0017] In this embodiment, mixer MX is coupled to low-noise amplifiers LNA1 and LNA2, frequency synthesizer 610, and filter F. The mixer MX can mix the radio frequency signals output by the low-noise amplifiers LNA1 and LNA2 according to the carrier signal ST generated by the frequency synthesizer 610 to generate an intermediate frequency signal. The filter F is configured to remove frequency components other than the intermediate frequency signal. The analog-to-digital converter ADC is coupled between the filter F and the processing circuit 606, and the analog-to-digital converter ADC is configured to generate a baseband signal according to the intermediate frequency signal. In this embodiment, two mixers MX, two filters F, and two analog-to-digital converters ADC are used. The two mixers MX are respectively coupled between the low-noise amplifiers LNA1 and LNA2 and the two filters F, and the two filters F are respectively coupled between the two mixers MX and the two analog-to-digital converters ADC, but the present disclosure is not limited to such.

[0018] The processing circuit 606 may determine spatial information of an external object according to a baseband signal, such as a touch operation of an external object within a flattened detection area formed by the second radiation area TA2 in the embodiments of Figures 1 and 5. When the radio signaling device 100 is applied to a display device, the processing circuit 606 may control the display device to display a corresponding image. For example, when the external object OB1 (e.g., a finger in this embodiment) in the embodiment of Figure 1 is located in the second radiation area TA2, the processing circuit 606 may generate position information according to an internal signal (e.g., a baseband signal). The display device displays a mark (e.g., a cursor, but not limited to one) corresponding to the external object OB1 according to the position information, and does not display a mark when the external object OB1 is located in the first radiation area TA1 or the third radiation area TA3. In other words, the wireless signaling device 100 of this embodiment is configured such that when the external object OB1 is located in the first radiation area TA1 or the third radiation area TA3, the level of the reflected signal generated by the reflection of the external object OB1 is below a predetermined threshold, and when the external object OB1 is located in the second radiation area TA2, the level of the reflected signal generated by the reflection of the external object OB1 is above a predetermined threshold. The predetermined threshold represents a reflected signal level threshold sufficient to display a mark on a display device. With such a setting, the wireless signaling device 100 can achieve the effect of detecting only the external object OB1 located in the second radiation area TA2 in order to acquire two-dimensional spatial information of the external object OB1 in the XY plane (second plane) without including third-dimensional spatial information (e.g., information in the Z-axis direction). Since the wireless signaling device 100 of this embodiment acquires only two-dimensional spatial information in the XY plane (second plane), the XY plane (second plane) can be considered a virtual touch surface, and the external object OB1 can perform touch operations on the virtual touch surface.Thus, when the external object OB1 moves in the third-dimensional direction (e.g., the Z-axis direction) but still touches the second radiation area TA2, the misjudgment behavior of the external object OB1, and the misjudgment behavior of the aforementioned part of the external object OB1 (e.g., the palm, but not limited thereto) that is not used for performing a touch operation when located in the first radiation area TA1 or the third radiation area TA3, are reduced so as to reduce detection errors, improve the accuracy of the touch operation of the external object OB1, and at the same time, reduce the amount of information calculation performed by the processing circuit 606.

[0019] It should be noted that the aforementioned flattened detection area is not limited to detecting only a single object. For example, in the embodiment of FIG. 5, the external object may include two objects such as the external objects OB1 and OB2. The flattened detection area can also detect the external objects OB1 and OB2 (e.g., two fingers in this embodiment). For example, in the embodiment of FIG. 5, a touch operation using the user's index finger and thumb can be performed. When the external objects OB1 and OB2 are located in the second radiation area TA2, the processing circuit 606 can generate the position information of each of the external objects OB1 and OB2 in the XY plane (e.g., the second plane) according to an internal signal (e.g., a baseband signal) (the aforementioned two-dimensional spatial information includes the position information of each of the external objects OB1 and OB2 in the XY plane), and can be configured to generate the relative distance information of the external objects OB1 and OB2. For example, after obtaining the relative distance information of the external objects OB1 and OB2 in the XY plane, the relative distance information may be further configured to form a corresponding zoom command, whereby the display device can control the displayed image to present a zoom-in or zoom-out effect according to the zoom command. In other embodiments, the relative distance information may be configured to form other types of commands.

[0020] Furthermore, in the embodiment shown in Figure 6, a phase shifter 608 is coupled to transmitting antenna groups TG1 and TG2 via a transmitting circuit 602. The phase shifter 608 may be configured to change the phase difference between a first sub-transmit signal and a second sub-reflected signal, thereby allowing the distribution of the narrow beamwidth antenna radiation pattern to rotate and change around an axis extending along a first direction (e.g., the Z-axis), as shown in Figure 4. Figure 4 is a schematic diagram of the narrow beamwidth antenna radiation pattern according to an embodiment of the present disclosure. Note that the first radiation area TA1 and the third radiation area TA3 are shown in exploded view to clearly show the portion of the narrow beamwidth antenna radiation pattern in the second plane (XY plane) formed by the flattened detection area formed by the second radiation area TA2. As shown in Figure 4, the distribution of the narrow beamwidth antenna radiation pattern in the XY plane (second plane) is, for example, a rotational change of 30 degrees, 0 degrees, and -30 degrees in the XY plane with the Z-axis as the central axis, but is not limited to these. In this way, by changing the distribution range of the narrow beamwidth antenna radiation pattern in the XY plane, the detection range of the radio signaling device 100 is adjusted, and the position of the external object OB1 in the flattened detection area can be detected more effectively and accurately. On the other hand, in other embodiments, for example, if it is not necessary to change the distribution range of the narrow beamwidth antenna radiation pattern in the XY plane, or if other methods or elements are used to change the phase difference between the first sub-transmit signal and the second sub-transmit signal, the phase shifter 608 of the radio signaling device 100 may be omitted.

[0021] Although the embodiment in Figure 6 is illustrated using an antenna device 102 as an example, which includes two transmitting antenna groups TG1 and TG2 and two receiving antenna groups RG1 and RG2, it should be noted that the number of transmitting and receiving antenna groups included in the antenna device 102 is not limited in this way. In other embodiments, as the number of transmitting antenna groups arranged along or substantially along the second direction increases, the range of the narrow beamwidth antenna radiation pattern in the second direction (e.g., the X-axis direction) decreases accordingly. Thus, the antenna radiation pattern can be adjusted to an appropriate antenna radiation pattern according to the application scenario of the radio signaling device 100, for example, it can be applied to situations where an external object OB1 in a known specific direction or range should be detected.

[0022] Referring further to Figure 7, which is a schematic diagram of an antenna device according to another embodiment of the present disclosure. In the embodiment of Figure 7, the antenna device 1021 includes one transmitting antenna group TG1, two receiving antenna groups RG1 and RG2, one transmitting antenna port PT1, and two receiving antenna ports PR1 and PR2. Furthermore, the transmitting circuit 602 and the receiving circuit 604 may be implemented as shown in Figure 8. Figure 8 is a schematic diagram of a radio signaling device according to another embodiment of the present disclosure. Compared to the embodiment of Figure 6, the transmitting circuit 602 of the radio signaling device 1001 in the embodiment of Figure 8 includes a power amplifier PA1 but does not include a power amplifier PA2, and the radio signaling device 1001 is not provided with a phase shifter 608. The embodiments of Figures 7 and 8 use relatively simple structures to implement a technique for detecting two-dimensional spatial information of an external object in a flattened detection area in a second plane.

[0023] In some examples, the receiving circuit 604 may be as shown in the embodiment of Figure 9. Figure 9 is a schematic diagram of a radio signaling device according to yet another embodiment of the present disclosure. The antenna device 1022 in Figure 9 includes one transmitting antenna group TG1, two receiving antenna groups RG1 and RG2, one transmitting antenna port PT1, and two receiving antenna ports PR1 and PR2. The difference between the embodiment of Figure 9 and the embodiment of Figure 8 is that the radio signaling device 1002 in Figure 9 may further include a switching circuit 902. Furthermore, the receiving circuit 604 in Figure 9 does not include a low-noise amplifier LNA2, and the receiving circuit 604 may use only one set of mixer MX, filter F, and analog-to-digital converter ADC. The switching circuit 902 is coupled between the receiving antenna groups RG1 and RG2 and the receiving circuit 604. The switching circuit 902 may consist of one or more electronic components such as multiplexers and switches, and the low-noise amplifier LNA1 can be instantaneously switched to be coupled to receiving antenna groups RG1 and RG2 via the switching circuit 902. That is, the switching circuit 902 is coupled to the low-noise amplifier LNA1, and by selecting to couple receiving antenna group RG1 to the low-noise amplifier LNA1 via receiving antenna port PR1, or to couple receiving antenna group RG2 to the low-noise amplifier LNA1 via receiving antenna port PR2, the receiving circuit 604 does not need to use the other low-noise amplifier LNA2 and the other set of mixer MX, filter F, and analog-to-digital converter ADC. This contributes to a reduction in circuit area.

[0024] Since the embodiments in Figures 7, 8, and 9 are similar to those in Figures 1 to 6, those skilled in the art should be able to infer the embodiments in Figures 7, 8, and 9 based on the contents of Figures 1 to 6, and therefore the details will not be repeated here.

[0025] Figure 10 is a flowchart of a wireless signal detection method according to an embodiment of the present disclosure. The wireless signal detection method may be, for example, a radar detection method. As can be seen from the embodiments described above, the wireless signal detection method may include at least the following steps: First, a narrow beamwidth antenna radiation pattern is formed. The narrow beamwidth antenna radiation pattern forms a flattened detection area, which forms a second plane (step S1002). A transmit signal is transmitted via a transmit antenna array (step S1004). A receive antenna array receives a reflected signal. The reflected signal is generated when the transmit signal is reflected by an external object, which is located in the flattened detection area (step S1006). Next, an internal signal is generated according to the reflected signal, the internal signal is related to the spatial information of the external object, and the spatial information includes only two-dimensional spatial information in the second plane (step S1008).

[0026] Furthermore, the narrow beamwidth antenna radiation pattern includes a first radiation area, a second radiation area, and a third radiation area. The second radiation area is located between the first and third radiation areas. The range of the first radiation area is wider than that of the second radiation area, and the range of the third radiation area is wider than that of the second radiation area. The second radiation area forms a flattened detection area. A method for detecting the radio signal of an external object using the first, second, and third radiation areas may be shown in Figure 11. First, it is determined whether the external object is located in the first, second, or third radiation area (step S1102). When the external object is located in the second radiation area, position information or relative distance information in the second plane is generated according to the internal signal (step S1004), and relative distance information is generated if the corresponding external object includes more than two objects. Then, according to at least one of the position information and relative distance information, a mark corresponding to the external object is displayed or a command is generated (step S1106). Furthermore, when an external object is located in the first or third radiation area, the mark is not displayed, or the command is not generated (step S1108).

[0027] Furthermore, in some embodiments, the step of transmitting a transmit signal via a transmit antenna array may include transmitting a first sub-transmit signal via a first transmit antenna group and a second sub-transmit signal via a second transmit antenna group. The first and second transmit antenna groups are arranged along a second direction, and the transmit signal includes the first sub-transmit signal and the second sub-transmit signal. By varying the phase difference between the first sub-transmit signal and the second sub-transmit signal, the distribution of the narrow beamwidth antenna radiation pattern in the second plane is rotated and changed around an axis extending along the first direction.

[0028] In summary, the antenna device of the wireless signaling device of the embodiments of the present disclosure includes a transmitting antenna array and a receiving antenna array arranged in a first plane. The antenna device forms a narrow beamwidth antenna radiation pattern. The narrow beamwidth antenna radiation pattern can form a flattened detection area. The flattened detection area forms a second plane substantially perpendicular to the first plane. The wireless signaling device may be configured to detect spatial information of two-dimensional spatial information of an external object in the flattened detection area, and the spatial information includes only two-dimensional spatial information in the second plane. In this way, by using the antenna device to detect only two-dimensional spatial information of an external object in a flattened detection area in the second plane, detection errors in the third dimension that were caused by detecting three-dimensional spatial information can be reduced, improving the accuracy of touch detection and reducing the amount of information computation data. [Explanation of Symbols]

[0029] 100, 1001, 1002 Wireless signaling device 102, 1021, 1022 Antenna equipment 602 Transmitter Circuit 604 Receiving Circuit 606 Processing Circuit 608 Phase Shifter 610 Frequency Synthesizer 902 Switching Circuit LNA1, LNA2 Low-noise amplifier OB1, OB2 External Objects PA1, PA2 Power Amplifiers PR1, PR2 Receiving antenna ports PT1, PT2 Transmitting Antenna Ports RARY1 Receiving Antenna Array RG1, RG2 Receiving Antenna Group TARY1 Transmitting Antenna Array TA1 First Radiation Area TA2 Second Radiation Area TA3 Third Radiation Area TG1, TG2 Transmitting Antenna Group

Claims

1. A wireless signaling device, This is an antenna device configured to form a narrow beamwidth antenna radiation pattern. A transmitting antenna array arranged in a first plane and configured to transmit a transmission signal, A receiving antenna array arranged in the first plane and configured to receive reflected signals generated when the transmitted signal is reflected by an external object, The antenna device having, A transmitting circuit configured to generate the aforementioned transmitting signal, The receiving circuit is configured to generate an internal signal related to the spatial information of the external object according to the reflected signal, The narrow beamwidth antenna radiation pattern forms a flattened detection area, the flattened detection area forms a second plane, the first angle between the first plane and the second plane is 80 degrees or more and 100 degrees or less, the wireless signaling device is configured to detect the spatial information of the external object within the flattened detection area, and the spatial information includes only two-dimensional spatial information in the second plane. Wireless signaling device.

2. The narrow beamwidth antenna radiation pattern has a first radiation area, a second radiation area, and a third radiation area. The level of the generated reflected signal is less than a predetermined threshold when the external object is located in the first or third radiation area, and the level of the generated reflected signal is greater than or equal to the predetermined threshold when the external object is located in the second radiation area. The second radiation area is located between the first radiation area and the third radiation area. The range of the first radiation area is wider than that of the second radiation area, the range of the third radiation area is wider than that of the second radiation area, and the second radiation area forms the flattened detection area. The wireless signaling device according to claim 1.

3. It further has a processing circuit, The processing circuit is configured to generate position information according to the internal signal when the external object is located in the second radiation area, and the display device displays a mark corresponding to the external object according to the position information, and the display device does not display the mark when the external object is located in the first radiation area or the third radiation area. The wireless signaling device according to claim 2.

4. It further has a processing circuit, The aforementioned external object includes two objects, The processing circuit is configured to generate relative distance information of the two objects in the second plane according to the internal signal when the two objects are located in the second radiation area. The wireless signaling device according to claim 2.

5. At least one of the transmitting antenna array and the receiving antenna array has a plurality of antenna units arranged along a first direction, The second included angle between the first direction and the normal direction of the second plane is between 0 degrees and 10 degrees. The wireless signaling device according to claim 1.

6. The antenna device further includes a first receiving antenna port and a second receiving antenna port. The receiving antenna array has a first receiving antenna group and a second receiving antenna group arranged along a second direction and coupled to the first receiving antenna port and the second receiving antenna port, respectively. The third angle between the second direction and the normal direction of the second plane is between 80 degrees and 100 degrees. The wireless signaling device according to claim 1.

7. The antenna device further includes a first transmitting antenna port, a first receiving antenna port, and a second receiving antenna port. The transmitting antenna array has a first transmitting antenna group coupled to the first transmitting antenna port, and the first transmitting antenna group has a plurality of first transmitting antenna units. The receiving antenna array has a first receiving antenna group and a second receiving antenna group coupled to the first receiving antenna port and the second receiving antenna port, respectively, the first receiving antenna group has a plurality of first receiving antenna units, and the second receiving antenna group has a plurality of second receiving antenna units. The first receiving antenna port receives a first sub-reflection signal, the second receiving antenna port receives a second sub-reflection signal, and the reflected signal includes the first sub-reflection signal and the second sub-reflection signal. The angular information of the external object in the second plane is determined according to the first sub-reflection signal and the second sub-reflection signal. The wireless signaling device according to claim 1.

8. The aforementioned antenna device further has a second transmitting antenna port, The transmitting antenna array further comprises a second transmitting antenna group coupled to the second transmitting antenna port, the second transmitting antenna group having a plurality of second transmitting antenna units. The wireless signaling device according to claim 7.

9. The first transmitting antenna group and the second transmitting antenna group are arranged along the second direction, The first transmitting antenna group is configured to transmit a first sub-transmit signal, and the second transmitting antenna group is configured to transmit a second sub-transmit signal, and the transmitted signal includes the first sub-transmit signal and the second sub-transmit signal. The phase difference between the first sub-transmit signal and the second sub-transmit signal changes such that the distribution of the narrow beamwidth antenna radiation pattern in the second plane rotates and changes around an axis extending along the first direction. The second included angle between the first direction and the normal direction of the second plane is between 0 degrees and 10 degrees. The wireless signaling device according to claim 8.

10. The system further comprises a phase shifter coupled to the first transmitting antenna group and the second transmitting antenna group, the phase shifter being configured to change the phase difference between the first sub-transmit signal and the second sub-transmit signal. The wireless signaling device according to claim 9.

11. The antenna device further has a plurality of transmitting antenna ports, The transmitting antenna array has a plurality of transmitting antenna groups arranged along a second direction and each coupled to the transmitting antenna port. The wireless signaling device according to claim 1.

12. The frequency band used by the aforementioned wireless signaling device is 24 GHz or higher. The wireless signaling device according to claim 1.

13. The transmitting circuit further comprises a first power amplifier, and the receiving circuit further comprises a first low-noise amplifier and a second low-noise amplifier. The first transmitting antenna group is coupled to the first power amplifier via the first transmitting antenna port. The first receiving antenna group is coupled to the first low-noise amplifier via the first receiving antenna port. The second receiving antenna group is coupled to the second low-noise amplifier via the second receiving antenna port. The wireless signaling device according to claim 7.

14. It further has a switching circuit, The transmitting circuit further comprises a first power amplifier, and the receiving circuit further comprises a first low-noise amplifier. The first transmitting antenna group is coupled to the first power amplifier via the first transmitting antenna port. The switching circuit is coupled to the first low-noise amplifier and can choose to couple the first receiving antenna group to the first low-noise amplifier via the first receiving antenna port, or to couple the second receiving antenna group to the first low-noise amplifier via the second receiving antenna port. The wireless signaling device according to claim 7.

15. The transmitting circuit further comprises a first power amplifier and a second power amplifier, and the receiving circuit further comprises a first low-noise amplifier and a second low-noise amplifier. The first transmitting antenna group is coupled to the first power amplifier via the first transmitting antenna port, and the second transmitting antenna group is coupled to the second power amplifier via the second transmitting antenna port. The first receiving antenna group is coupled to the first low-noise amplifier via the first receiving antenna port, and the second receiving antenna group is coupled to the second low-noise amplifier via the second receiving antenna port. The wireless signaling device according to claim 8.

16. The first transmitting antenna group has a plurality of first transmitting antenna units arranged along a first direction, the second transmitting antenna group has a plurality of second transmitting antenna units arranged along the first direction, the first receiving antenna group has a plurality of first receiving antenna units arranged along the first direction, and the second receiving antenna group has a plurality of second receiving antenna units arranged along the first direction. The first transmitting antenna group, the second transmitting antenna group, the first receiving antenna group, and the second receiving antenna group are arranged along a second direction, and the first direction is perpendicular to the second direction. The wireless signaling device according to claim 8.

17. This involves forming a narrow beamwidth antenna radiation pattern that forms a flattened detection area, wherein the flattened detection area forms a second plane. Transmitting a transmission signal, The process involves receiving a reflected signal generated by the reflection of the transmitted signal by an external object, wherein the external object is located within the flattened detection area. The process involves generating an internal signal related to the spatial information of the external object according to the reflected signal, wherein the spatial information includes only two-dimensional spatial information within the second plane. A wireless signal detection method having the following characteristics.

18. The narrow beamwidth antenna radiation pattern has a first radiation area, a second radiation area, and a third radiation area, the second radiation area is located between the first radiation area and the third radiation area, the range of the first radiation area is wider than that of the second radiation area, the range of the third radiation area is wider than that of the second radiation area, the second radiation area forms the flattened detection area, and the wireless signal detection method is, Determining whether the external object is located in the first radiation area, the second radiation area, or the third radiation area, When the external object is located in the second radiation area, position information is generated according to the internal signal, To display a mark corresponding to the external object according to the aforementioned position information, The mark shall not be displayed when the external object is located in the first radiation area or the third radiation area. It further has, The wireless signal detection method according to claim 17.

19. The narrow beamwidth antenna radiation pattern has a first radiation area, a second radiation area, and a third radiation area, the second radiation area is located between the first radiation area and the third radiation area, the range of the first radiation area is wider than that of the second radiation area, the range of the third radiation area is wider than that of the second radiation area, the second radiation area forms the flattened detection area, the external object has two objects, and the wireless signal detection method is, Determining whether the two objects are located in the first radiation area, the second radiation area, or the third radiation area, When the two objects are located in the second radiation area, relative distance information of the two objects in the second plane is generated according to the internal signal. It further has, The wireless signal detection method according to claim 17.

20. Transmitting the aforementioned transmission signal means Transmitting a first sub-transmission signal via the first transmitting antenna group, The method involves transmitting a second sub-transmission signal via a second transmitting antenna group, wherein the first transmitting antenna group and the second transmitting antenna group are arranged along a second direction in a first plane, the first angle between the first plane and the second plane is 80 degrees or more and 100 degrees or less, and the transmission signal includes the first sub-transmission signal and the second sub-transmission signal. The phase difference between the first sub-transmit signal and the second sub-transmit signal is changed such that the distribution of the narrow beamwidth antenna radiation pattern in the second plane rotates and changes around an axis extending along the first direction, wherein the second included angle between the first direction and the normal direction of the second plane is 0 degrees or more and 10 degrees or less. Having, The wireless signal detection method according to claim 17.

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