Wireless Directional Method Based on Resonant Coupling of Dual Magnetic Dipole Antennas

Abstract

The present application relates to a wireless direction finding method based on resonant coupling of dual magnetic dipole antennas, which is applied to a pair of magnetic dipole antennas. The phase relationship between the magnetic dipole antennas in the pair of magnetic dipole antennas is configured based on a preset configuration method, and the magnetic dipole antennas generate a coupling effect under the action of an incident electromagnetic wave. First, the DC output voltage of each magnetic dipole antenna under the coupling effect is obtained, and then the incident direction of the incident electromagnetic wave is determined according to the DC output voltage of each magnetic dipole antenna. This method reduces the complexity in calculating the incident direction of an electromagnetic wave in the traditional technology, thereby reducing the power consumption in the radio direction finding process.

Description

Technical Field

[0001] This application relates to the field of wireless direction finding technology, and particularly to a wireless direction finding method based on resonant coupling of dual magnetic dipole antennas. Background Art

[0002] Radio direction finding technology is a process of using instruments and equipment to determine the direction of incoming radio waves based on the propagation characteristics of electromagnetic waves.

[0003] Traditional radio direction finding needs to use arrayed antennas for measurement. It calculates the phase difference between antennas through a complex signal processing circuit process, and calculates the incident angle of the wireless signal based on this, so as to determine the incident direction of the electromagnetic wave. However, the calculation process of traditional radio direction finding technology is relatively complex, resulting in high power consumption during the radio direction finding process. Summary of the Invention

[0004] Based on this, it is necessary to provide a wireless direction finding method based on resonant coupling of dual magnetic dipole antennas for the above technical problems, which can reduce the power consumption when calculating the incident direction of electromagnetic wave signals.

[0005] In a first aspect, this application provides a method for determining the incident direction of a signal, which is applied to a pair of magnetic dipole antennas. The phase relationship between the magnetic dipole antennas in the pair of magnetic dipole antennas is configured based on a preset configuration method, and coupling occurs between the magnetic dipole antennas under the action of the incident electromagnetic wave; the method includes:

[0006] Obtain the DC output voltage of each magnetic dipole antenna under the coupling effect.

[0007] Determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna.

[0008] In one embodiment, the two magnetic dipole antennas in the pair of magnetic dipole antennas are placed back-to-back and parallel to each other, and a preset distance is set between the magnetic dipole antennas.

[0009] In one embodiment, each magnetic dipole antenna includes a resonant unit, a coupling unit, and an energy integration circuit; the resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after coupling occurs between the coupling unit and the resonant unit;

[0010] The induced alternating current is converted into a DC output voltage after passing through the energy integration circuit.

[0011] In one embodiment, the resonant unit, the coupling unit, and the energy integration circuit are all located on a dielectric substrate;

[0012] There is a coupling relationship between the resonant unit and the coupling unit, and the resonant unit and the coupling unit together form a double-open resonator structure; the coupling unit is connected to the energy integration circuit.

[0013] In one embodiment, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit;

[0014] The detection circuit is used to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

[0015] In one embodiment, determining the incident direction of the incident electromagnetic wave according to the DC output voltages of the magnetic dipole antennas includes:

[0016] Obtaining the difference between the DC output voltages of the magnetic dipole antennas;

[0017] Determining the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of the magnetic dipole antennas.

[0018] In one embodiment, determining the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of the magnetic dipole antennas includes:

[0019] Determining the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of the magnetic dipole antennas, where the incident angle of the incident electromagnetic wave represents the angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair;

[0020] Determining the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

[0021] In a second aspect, an embodiment of the present application provides a signal incident direction device, which includes:

[0022] A voltage acquisition module, configured to acquire the DC output voltages of the magnetic dipole antennas in the magnetic dipole antenna pair under the coupling effect; the phase relationship between the magnetic dipole antennas is configured based on a preset configuration method, and the magnetic dipole antennas generate a coupling effect under the action of the incident electromagnetic wave;

[0023] A direction determination module, configured to determine the incident direction of the incident electromagnetic wave according to the DC output voltages of the magnetic dipole antennas.

[0024] In a third aspect, an embodiment of the present application provides a processing device, including a memory and a processor, where the memory stores a computer program, and the processor, when executing the computer program, implements the steps of the method provided in any one of the first aspects above.

[0025] In a fourth aspect, an embodiment of the present application provides an electronic system, which includes the processing device of the third aspect and a pair of magnetic dipole antennas; the processing device is configured to execute the steps of implementing the method provided in any one of the first aspects above.

[0026] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of implementing the method provided in any one of the first aspects above are realized.

[0027] In a sixth aspect, an embodiment of the present application further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of implementing the method provided in any one of the first aspects above are realized.

[0028] The above wireless direction finding method based on resonance coupling of a pair of magnetic dipole antennas is applied to a pair of magnetic dipole antennas. The phase relationship between the magnetic dipole antennas in the pair of magnetic dipole antennas is configured based on a preset configuration method, and each magnetic dipole antenna generates a coupling effect under the action of an incident electromagnetic wave. First, the DC output voltage of each magnetic dipole antenna under the coupling effect is obtained, and then the incident direction of the incident electromagnetic wave is determined according to the DC output voltage of each magnetic dipole antenna. In this method, after the phase configuration of each magnetic dipole antenna, it is only necessary to obtain the DC output voltage of each magnetic dipole antenna under the coupling effect of the incident electromagnetic wave and each magnetic dipole antenna, and then according to the DC output voltage of each magnetic dipole antenna, the incident direction of the incident electromagnetic wave can be directly obtained. This method reduces the complexity in calculating the incident direction of electromagnetic waves in the traditional technology, thereby reducing the power consumption in the radio direction finding process. Description of the Drawings

[0029] Figure 1 It is an application environment diagram of the signal incident direction determination method in one embodiment;

[0030] Figure 2 It is a schematic flowchart of the signal incident direction determination method in one embodiment;

[0031] Figure 3 It is a schematic structural diagram of the signal incident direction determination method in one embodiment;

[0032] Figure 4 It is a schematic flowchart of the signal incident direction determination method in another embodiment;

[0033] Figure 5 It is a schematic structural diagram of a magnetic dipole antenna in one embodiment;

[0034] Figure 6Schematic diagram of the structure of a magnetic dipole antenna in another embodiment;

[0035] Figure 7 Schematic diagram of the structure of a magnetic dipole antenna in another embodiment;

[0036] Figure 8 Schematic flow chart of a method for determining the signal incident direction in another embodiment;

[0037] Figure 9 Schematic flow chart of a method for determining the signal incident direction in another embodiment;

[0038] Figure 10 Schematic diagram of the variation of voltage difference with incident angle in one embodiment;

[0039] Figure 11 Schematic diagram of the application of a method for determining the signal incident direction in another embodiment;

[0040] Figure 12 Schematic diagram of the structure of a magnetic dipole antenna in another embodiment;

[0041] Figure 13 Schematic flow chart of a method for determining the signal incident direction in another embodiment;

[0042] Figure 14 Schematic simulation diagram of a method for determining the signal incident direction in one embodiment;

[0043] Figure 15 Schematic simulation diagram of a method for determining the signal incident direction in another embodiment;

[0044] Figure 16 Schematic simulation diagram of a method for determining the signal incident direction in another embodiment;

[0045] Figure 17 Schematic flow chart of a method for determining the signal incident direction in another embodiment;

[0046] Figure 18 Schematic block diagram of the structure of a signal incident direction device in one embodiment;

[0047] Figure 19 Internal structure diagram of a computer device in one embodiment.

[0048] Description of reference numerals:

[0049] WiFi transmitting antenna 101; Coupling unit 103;

[0050] Resonant unit 104; Dielectric substrate 105;

[0051] Detection circuit 106; Load 107;

[0052] Ground wire 108; Energy integration circuit 201;

[0053] First magnetic dipole antenna 301; Second magnetic dipole antenna 2 302;

[0054] Incident electromagnetic wave 303. Specific implementation mode

[0055] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] The signal incident direction determination method provided by the embodiment of the present application can be in the application environment as Figure 1 shown. Among them, the magnetic dipole antenna pair communicates with the processing device. Among them, the magnetic dipole antenna includes a plurality of magnetic dipole antennas, and the magnetic dipole antenna is an energy collection antenna for receiving electromagnetic wave signals.

[0057] The embodiment of the present application provides a wireless direction finding method based on resonant coupling of dual magnetic dipole antennas, which can reduce the power consumption when calculating the incident direction of electromagnetic wave signals.

[0058] The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below through embodiments and in conjunction with the accompanying drawings. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0059] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0060] In one embodiment, as Figure 2 shown, a signal incident direction determination method is provided. This embodiment relates to the specific process of obtaining the DC output voltage of each magnetic dipole antenna under the coupling effect and determining the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna. This embodiment includes the following steps:

[0061] S201, obtain the DC output voltage of each magnetic dipole antenna under the coupling effect.

[0062] The embodiment of the present application is implemented based on the Figure 1 shown magnetic dipole antenna pair. Among them, in the aboveFigure 1 Among them, the phase relationship between the magnetic dipole antennas in the magnetic dipole antenna pair is configured based on a preset configuration method, and the magnetic dipole antennas generate a coupling effect under the action of the incident electromagnetic wave. Among them, the magnetic dipole antenna is an energy harvesting antenna that can receive the incident electromagnetic wave and generate electrical energy under the action of the incident electromagnetic wave.

[0063] Therefore, when calculating the incident direction of the incident electromagnetic wave 303, first configure the phase relationship between two or more magnetic dipole antennas so that the magnetic dipole antennas generate a coupling effect under the action of the incident electromagnetic wave 303, and the resonance intensity of each magnetic dipole antenna is related to the incident direction of the incident electromagnetic wave 303.

[0064] Optionally, configuring the phase relationship of each magnetic dipole antenna can be to place each magnetic dipole antenna in parallel.

[0065] After configuring the phase relationship of each magnetic dipole antenna, for any magnetic dipole antenna, the magnetic dipole antenna generates a strong electromagnetic coupling effect with other magnetic dipole antennas under the action of the incident electromagnetic wave 303, so that the magnetic dipole antenna obtains a DC output voltage under the coupling action of other magnetic dipole antennas; the DC output voltage is the electrical energy obtained by the magnetic dipole antenna under the coupling action of the incident electromagnetic wave 303 and other magnetic dipole antennas; by the same principle, the DC output voltage of each magnetic dipole antenna can be obtained.

[0066] It should be noted that each magnetic dipole antenna in the magnetic dipole antenna pair can be configured in a critical coupling state; it can be ensured that when the magnetic dipole antenna pair is in the critical coupling state, the voltage output by each magnetic dipole antenna is more accurate.

[0067] S202. Determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna.

[0068] Based on the DC output voltage of each magnetic dipole antenna obtained above, the incident direction of the incident electromagnetic wave 303 can be obtained. Optionally, the incident direction of the incident electromagnetic wave 303 can be obtained by means of a preset neural network model. Specifically, the DC output voltage of each magnetic dipole antenna is input into the preset neural network model, and through the analysis of the neural network model, the incident direction of the incident electromagnetic wave 303 is obtained; it should be noted that the neural network model is a pre-trained model, and the pre-trained model is set in the processing device to determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna.

[0069] In the above signal incident method, when applied to a pair of magnetic dipole antennas, the phase relationship between the magnetic dipole antennas in the pair of magnetic dipole antennas is configured based on a preset configuration method, and a coupling effect is generated between the magnetic dipole antennas under the action of incident electromagnetic waves. First, the DC output voltage of each magnetic dipole antenna under the coupling effect is obtained, and then the incident direction of the incident electromagnetic wave is determined according to the DC output voltage of each magnetic dipole antenna. In this method, after the phase configuration of each magnetic dipole antenna, only the DC output voltage of each magnetic dipole antenna needs to be obtained under the coupling effect of the incident electromagnetic wave and each magnetic dipole antenna, and then the incident direction of the incident electromagnetic wave can be directly obtained according to the DC output voltage of each magnetic dipole antenna. This method reduces the complexity in calculating the incident direction of electromagnetic waves in the traditional technology, thereby reducing the power consumption in the radio direction finding process.

[0070] In one embodiment, the two magnetic dipole antennas in the pair of magnetic dipole antennas are placed back-to-back and parallel to each other, and a preset distance is provided between the magnetic dipole antennas.

[0071] As Figure 3 shown, Figure 3 FIG. is a schematic diagram of the back-to-back and parallel placement of the two magnetic dipole antennas in the pair of magnetic dipole antennas. The back-to-back and parallel placement means that the two magnetic dipole antennas are placed parallel to each other and rotated 180° relative to each other. Optionally, the distance between the two magnetic dipole antennas is 9 mm, forming a coupled magnetic dipole antenna pair; where 301 and 302 represent the two back-to-back and parallel magnetic dipole antennas, 301 is the first magnetic dipole antenna, and 302 is the second magnetic dipole antenna. 303 is the incident electromagnetic wave; it should be noted that Figure 3 301 and 303 shown in the figure are only for indicating the relative positions of 301 and 302; the first and second in the first magnetic dipole antenna 301 and the second magnetic dipole antenna 302 are only for distinguishing the two magnetic dipole antennas, and there is no order of precedence.

[0072] It should be noted that when a preset distance is provided between the magnetic dipole antennas, a coupling effect is generated between the magnetic dipole antennas, and a strongly coupled magnetic dipole antenna pair can be formed, where the preset distance can be obtained through multiple simulation experiments.

[0073] In one embodiment, each magnetic dipole antenna includes a resonant unit, a coupling unit, and an energy integration circuit; as Figure 4 shown, this embodiment includes the following steps:

[0074] S401, the resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after the coupling unit and the resonant unit generate a coupling effect.

[0075] The incident electromagnetic wave 303 is a radio frequency signal of a certain frequency, coming from a WiFi router, a mobile phone signal base station, etc.

[0076] Therefore, the resonant unit 104 is made to match the frequency of the incident electromagnetic wave, that is, the frequency of the resonant unit 104 is the same as the frequency of the incident electromagnetic wave 303, and magnetic dipole resonance is generated under the action of the incident electromagnetic wave 303; then, the coupling unit 103 can have a strong coupling effect with the resonant unit 104. Therefore, under the action of the incident electromagnetic wave 303, after a coupling effect is generated between the coupling unit 103 and the resonant unit 104, an induced alternating current is obtained.

[0077] Optionally, the resonant unit 104 can be a magnetic dipole resonance unit, and the coupling unit 103 can be a coupling coil.

[0078] S402, the induced alternating current is converted into a DC output voltage after passing through the energy integration circuit.

[0079] The energy integration circuit 201 can generate electric energy according to the induced alternating current. Therefore, the energy integration circuit 201 is connected to the coupling unit 103, and the induced alternating current generated after the coupling effect between the coupling unit 103 and the resonant unit 104 passes through the energy integration circuit 201 to obtain a DC output voltage.

[0080] In the above signal incident direction determination method, the resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after a coupling effect is generated between the coupling unit and the magnetic dipole resonance unit. The induced alternating current is converted into a DC output voltage after passing through the energy integration circuit. In this method, directly under the action of the incident electromagnetic wave, through the action of the resonant unit, the coupling unit and the energy integration current, a DC output voltage is obtained, greatly reducing the power consumption of the system.

[0081] In one embodiment, the resonant unit, the coupling unit, and the energy integration circuit are all located on a dielectric substrate; there is a coupling relationship between the resonant unit and the coupling unit, and the resonant unit and the coupling unit together form a double-open resonator structure; the coupling unit is connected to the energy integration circuit.

[0082] When designing a magnetic dipole antenna, the magnetic dipole antenna will be arranged on the dielectric substrate 105, and the arrangement method is to process the magnetic dipole antenna on the dielectric substrate 105 in the way of printed circuit board (printed circuit board, PCB) processing, and the thickness of the dielectric substrate 105 is much smaller than the wavelength.

[0083] Optionally, the dielectric substrate 105 can be a printed circuit board. Among them, copper-clad laminate (abbreviated as copper-clad board) is the substrate material for manufacturing printed circuit boards. It can not only be used to support various components, but also realize the electrical connection or electrical insulation between them.

[0084] As shown Figure 5 in the figure Figure 5 is a schematic diagram of a magnetic dipole antenna disposed on a dielectric substrate 105. There is a coupling relationship between the resonant unit 104 and the coupling unit 103, and both are open structures. The two together constitute a double-open resonant structure. Moreover, the coupling unit 103 is connected to the energy integration circuit 201. Among them, the resonant unit 104 is used to generate resonance under the action of the incident electromagnetic wave 303. Then, the resonant unit 104 and the coupling unit 103 are coupled to generate an alternating current. The energy integration circuit 201 is connected to the coupling coil 103 and converts the alternating current generated by the coupling unit 103 into a DC output voltage.

[0085] Among them, the resonant unit 104 and the coupling unit 103 can be semi-open structures. It should be noted that Figure 5 the sizes, open positions, and structural shapes of the resonant unit 104 and the coupling unit 103 in [[ ]] are not limited in the embodiments of the present application. Figure 5 In [[ ]], the resonant unit 104 and the coupling unit 103 have different sizes, the structure is a rectangular semi-open structure, and the open position is only for illustration.

[0086] Figure 5 In [[ ]], the resonant unit 104 and the coupling unit 103 are on the same side of the dielectric substrate 105. In practical applications, the resonant unit 104 and the coupling unit 103 can also be on different sides of the dielectric substrate 105; moreover, the energy integration circuit 201 is connected to the coupling unit 103. However, the energy integration circuit 201 and the coupling unit 103 can be on the same side of the dielectric substrate 105 or on different sides of the dielectric substrate 105; the resonant unit 104 and the coupling unit 103 are both ring structures with one side open. The size of the opening is not limited and is set according to actual applications. Optionally, the resonant unit 104 and the coupling unit 103 can be square open rings, rectangular open rings, or circular open rings.

[0087] Optionally, the resonant unit 104 can be a magnetic dipole resonant unit, and the coupling unit 103 can be a coupling coil.

[0088] The resonant unit 104 and the coupling unit 103 are both semi-open structures, and they together constitute a double-open resonant structure. The double-open resonant structure can be a split-ring resonator (SRR) structure. The SRR structure is a folded structure that can reduce the overall area occupied by the antenna under the same operating frequency conditions.

[0089] It should be noted that as a typical basic structure of metamaterial units, the SRR structure has deep sub-wavelength dimensions. The SRR structure can generate loop currents under the excitation of the magnetic component of the incident electromagnetic wave, and can fold and coil metal conductors within a limited space to realize the design of electrically small antennas.

[0090] Optionally, for a working frequency of 2.4 GHz, the antenna size ≤ 10 mm × 10 mm, that is, the antenna size ≤ 0.08λ, where λ is the wavelength, so that the antenna structure can meet the requirements of microsystems and miniaturized Internet of Things nodes for electrically small antennas.

[0091] In one embodiment, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit; the detection circuit is used to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

[0092] Detection circuits are placed on the magnetic dipole antennas to convert the incident electromagnetic wave into a DC voltage signal.

[0093] As Figure 6 shown, the energy integration circuit 201 includes a detection circuit 106 and a load 107. The first end of the detection circuit 106 is connected to the first side of the open end of the coupling unit 103, the second end of the detection circuit 106 is connected to the first end of the load 107, the second end of the load 107 is connected to the third end of the detection circuit 106, and the fourth end of the detection circuit 106 is connected to the second side of the open end of the coupling unit 103.

[0094] And, as Figure 7 shown, Figure 7 the detection circuit 106 in includes a first capacitor, a second capacitor, a first diode, and a second diode. Among them, a is the first capacitor, b is the first diode, c is the second capacitor, and d is the second diode. Among them, the first capacitor a is connected in series with the first diode b, the first capacitor a is connected in series with the second diode d, the second diode d is connected in parallel with the second capacitor c, and the second capacitor c is connected in series with the first diode b, and the first capacitor a is connected to the second capacitor c through the first diode b, that is, the first diode b is arranged in the middle of the first capacitor a and the second capacitor c. And the load 107 is connected in series with the first capacitor a and the first diode b and is connected in parallel with the second capacitor c.

[0095] Specifically, the first end of the first capacitor a is connected to the first side of the open end of the coupling unit 103, the second end of the first capacitor a is connected to the positive electrode of the first diode b, the second end of the first capacitor a is connected to the negative electrode of the second diode d, the negative electrode of the first diode b is connected to the first end of the second capacitor c, the second diode d is in parallel with the second capacitor c, the second end of the second capacitor c is connected to the second side of the open end of the coupling unit 103, the second capacitor c is in parallel with the load 107, the first end of the load 107 is connected to the negative electrode of the first diode b, and the second end of the load 107 is connected to the second end of the second capacitor c.

[0096] The detection circuit 106 is also connected to the system ground wire 108. Specifically, the second end of the second capacitor c and the positive electrode of the second diode d are both connected to the system ground wire 108; the system ground wire 108 and the load 107 are also provided on the dielectric substrate 105.

[0097] Please continue to refer to Figure 7 , the detection circuit 106 is connected to the coupling coil 103. The incident electromagnetic wave 303 causes resonance in the resonance unit 104, thereby inducing an alternating current in the coupling coil 103, generating an alternating voltage across the two ends of the coupling coil 103, and passing through the detection circuit 106 composed of the first capacitor a, the second capacitor c, the first diode b, and the second diode d to generate a DC output voltage.

[0098] Figure 7 It also includes a WiFi transmitting antenna 101, and the WiFi transmitting antenna 101 can emit the incident electromagnetic wave 303.

[0099] In one embodiment, as Figure 8 shown, according to the DC output voltages of each magnetic dipole antenna, determining the incident direction of the incident electromagnetic wave 303 includes the following steps:

[0100] S801, obtaining the difference between the DC output voltages of each magnetic dipole antenna.

[0101] Based on the DC output voltages of each detection circuit 106 in the above-mentioned magnetic dipole antennas, determining the difference between the DC output voltages of each magnetic dipole antenna. Optionally, when determining the difference between the DC output voltages of each magnetic dipole antenna, the obtained voltage differences can be between any two. For example, if there are two magnetic dipole antennas, namely magnetic dipole antenna 1 and magnetic dipole antenna 2, then calculate the voltage difference between magnetic dipole antenna 1 and magnetic dipole antenna 2; if there are three magnetic dipole antennas, namely magnetic dipole antenna 1, magnetic dipole antenna 2, and magnetic dipole antenna 3, then calculate the voltage difference between magnetic dipole antenna 1 and magnetic dipole antenna 2, calculate the voltage difference between magnetic dipole antenna 1 and magnetic dipole antenna 3, and calculate the voltage difference between magnetic dipole antenna 2 and magnetic dipole antenna 3.

[0102] S802. Determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

[0103] Based on the difference between the DC output voltages of each magnetic dipole antenna obtained above, determine the incident direction of the incident electromagnetic wave 303. That is, the incident direction of the incident electromagnetic wave 303 can be determined according to the preset direction determination model. Specifically, take the difference between the DC output voltages of each magnetic dipole antenna as the input of the direction determination model, and through the analysis of the direction determination model, obtain the incident direction of the incident electromagnetic wave 303.

[0104] For the above signal incident direction, obtain the difference between the DC output voltages of each magnetic dipole antenna, and determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna. In this method. In this method, the incident direction of the incident electromagnetic wave can be determined through the difference between the DC output voltages of each magnetic dipole antenna, reducing the computational complexity, thereby reducing the power consumption of the system.

[0105] In one embodiment, as Figure 9 shown, determining the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna includes the following steps:

[0106] S901. Determine the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna. The incident angle of the incident electromagnetic wave represents the angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair.

[0107] As Figure 10 shown, determine the incident angle corresponding to the difference between the DC output voltages of the magnetic dipole antennas according to the preset linear relationship between the incident angle and the voltage difference; Figure 10 The relationship between the incident angle and the voltage difference can be determined through simulation experiments. Specifically, first fix the distance between the WiFi transmitting antenna 101 and the magnetic dipole antenna pair, and by changing the incident angle of the incident electromagnetic wave 303 of the WiFi transmitting antenna 101, obtain the voltage differences at different incident angles through simulation and experiments, and then fit the voltage differences at different incident angles to obtain a fitting curve, that is, the variation relationship between the incident angle and the voltage difference.

[0108] First, according to the difference between the DC output voltages of each magnetic dipole antenna, calculate the average difference of the differences between the DC output voltages of each magnetic dipole antenna, and then Figure 10The linear relationship between the voltage difference and the incident angle in it is used to determine the incident angle of the incident electromagnetic wave 303. For example, if the average difference is 20, the incident angle of the incident electromagnetic wave is 46°. And this incident angle is the included angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair.

[0109] As Figure 11 shown, Figure 11 In it, 303 represents the incident electromagnetic wave, 301 and 302 represent two magnetic dipole antennas, and θ is the incident angle of the incident electromagnetic wave.

[0110] S902. Determine the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

[0111] According to the incident angle of the incident electromagnetic wave 303 and in combination with the positions of each magnetic dipole antenna, the incident direction of the incident electromagnetic wave 303 can be determined.

[0112] The above method for determining the signal incident direction determines the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna. The incident angle of the incident electromagnetic wave represents the included angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair; according to the incident angle of the incident electromagnetic wave, the incident direction of the incident electromagnetic wave is determined. In this method, according to the difference between the DC output voltages of each magnetic dipole antenna, the incident direction of the incident electromagnetic wave can be determined, reducing the complexity of calculating wireless direction finding and decreasing the power consumption of the system.

[0113] In one embodiment, as Figure 12 shown, Figure 12 is a schematic structural diagram of a single miniaturized magnetic dipole antenna. Among them, 303 is the incident electromagnetic wave, the resonant unit 104 and the coupling unit 103 are on the same side of the dielectric substrate 105, 107 is the circuit load, 108 is the ground wire of the system, and the resonant unit 104, the coupling unit 103, the detection circuit 106, the load 107 and the ground wire 108 are all arranged on the dielectric substrate 105; d is the side length of the coupling unit 103, d 2 is the side length of the resonant unit 104, w is the width of the coupling unit 103, w 2 is the width of the resonant unit 103.

[0114] In one embodiment, as Figure 13 shown, Figure 13It is a schematic flow chart for obtaining the incident direction based on two magnetic dipole antennas. This embodiment is used for a coupled dual magnetic dipole antenna for two-dimensional in-plane radio angle measurement. Among them, 303 is the incident electromagnetic wave, and magnetic dipole antenna 1 and magnetic dipole antenna 2 are two identical magnetic dipole antennas. Among them, magnetic dipole resonant antenna 1 includes resonant unit 1 and coupling unit 1, and magnetic dipole resonant antenna 2 includes resonant unit 2 and coupling unit 2; First, under the action of the incident electromagnetic wave 303, magnetic dipole resonant antenna 1 and magnetic dipole resonant antenna 2 are coupled to each other to obtain a first alternating current and a second alternating current. The first alternating current corresponds to magnetic dipole antenna 1, and the second alternating current corresponds to magnetic dipole antenna 2. The first alternating current and the second alternating current respectively pass through the corresponding detection circuit 106. The detection circuit 106 performs signal processing to obtain a DC output voltage, calculates the difference between the two DC output voltages, and obtains the incident angle, that is, the incident direction according to the difference of the DC output voltages; among them, the incident angle is basically linearly related to the difference between the two DC output voltages of the two magnetic dipole antennas. Therefore, it can be used to calculate the incident angle of the incident electromagnetic wave.

[0115] When the incident direction of the incident electromagnetic wave 303 has a certain angle with the central axis of the magnetic dipole antenna pair, the two magnetic dipole antennas will form different voltage outputs. By calculating the DC voltage difference between the outputs, the angle between the incident electromagnetic wave 303 and the central axes of the two antennas can be obtained. It can realize the accurate determination of the incident direction of the incident electromagnetic wave 303 by using a small-size, deep sub-wavelength antenna structure and a simple circuit structure. Therefore, only by measuring the DC output voltages of the detection circuits of the two antennas can the incident angle be determined, realizing a miniaturized and integrated radio direction finding module to support microsystems and miniaturized Internet of Things nodes.

[0116] Optionally, a cube structure with a volume of about 1 cm × 1 cm × 1 cm is formed by using two magnetic dipole antennas, and no complex phase measurement circuit is required. The incident angle can be measured by using the difference of the DC detection signals, and wireless energy harvesting and radio direction finding dual power supply can be realized to support multifunctional microsystems and miniaturized Internet of Things nodes.

[0117] Taking two magnetic dipole antennas as an example, the signal emission direction of the incident electromagnetic wave 303 forms an angle θ with the central axis of the magnetic dipole antenna pair. When θ changes from 0° to 180°, the outputs of the two magnetic dipole antennas will change.

[0118] In one embodiment, simulation is carried out by using the commercial simulation software CST2020. The transmission coefficient S21 of the two magnetic dipole antennas is simulated and calculated with the signal incident angle θ of the incident electromagnetic wave. The frequency of the incident electromagnetic wave emitted by the WiFi antenna 401 is 2.4 GHz. As Figure 14As shown, when θ is 0°, the output of the magnetic dipole antenna 301 is strong, and the output of the magnetic dipole antenna 302 is almost 0; as Figure 15 shown, when θ is 90°, the outputs of the magnetic dipole antenna 301 and the magnetic dipole antenna 302 are almost equal; as Figure 16 shown, when θ is 180°, the output of the magnetic dipole antenna 302 is strong, and the output of the magnetic dipole antenna 301 is almost 0. Therefore, the output intensities of the two magnetic dipole antennas are related to the incident angle of the incident electromagnetic wave 303.

[0119] It should be noted that the application scenarios in the embodiments of the present application are only for examples, which neither limit the corresponding relationship between the method and the application nor exclude other specific methods and application scenarios.

[0120] In one embodiment, as Figure 17 shown, taking the magnetic dipole antenna pair including a first magnetic dipole antenna and a second magnetic dipole antenna, the first magnetic dipole antenna including a first magnetic dipole resonance unit, a first coupling coil, and a first detection circuit, and the second magnetic dipole antenna including a second magnetic dipole resonance unit, a second coupling coil, and a second detection circuit as an example, this embodiment includes:

[0121] S1701, the first magnetic dipole resonance unit in the first magnetic dipole antenna generates a first magnetic dipole resonance under the action of the incident electromagnetic wave.

[0122] S1702, the first coupling coil and the first magnetic dipole resonance of the first magnetic dipole resonance unit have a coupling effect to generate a first alternating current.

[0123] S1703, after the first alternating current is converted by the first detection circuit, a first DC output voltage is obtained.

[0124] S1704, the second magnetic dipole resonance unit in the second magnetic dipole antenna generates a second magnetic dipole resonance under the action of the incident electromagnetic wave.

[0125] S1705, the second coupling coil and the second magnetic dipole resonance of the second magnetic dipole resonance unit have a coupling effect to generate a second alternating current.

[0126] S1706, after the second alternating current is converted by the second detection circuit, a second DC output voltage is obtained.

[0127] S1707, calculate the difference between the first DC output voltage and the second DC output voltage to obtain a voltage difference.

[0128] S1708, according to the linear relationship between the voltage difference and the incident angle, obtain the incident angle corresponding to the voltage difference, that is, the incident direction of the incident electromagnetic wave.

[0129] In the signal incident direction determination method provided in this embodiment, the implementation principles and technical effects of the steps are similar to those in the previous embodiments of the signal incident direction determination method, and will not be elaborated here.

[0130] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or steps in other steps.

[0131] Based on the same inventive concept, an embodiment of the present application also provides a signal incident direction device for implementing the signal incident direction determination method described above. The solution provided by this device for solving problems is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the signal incident direction device provided below can refer to the limitations on the signal incident direction determination method in the above text, and will not be elaborated here.

[0132] In one embodiment, as Figure 18 shown, a signal incident direction device 1800 is provided, including: a voltage acquisition module 1801 and a direction determination module 1802, where:

[0133] The voltage acquisition module 1801 is configured to acquire the DC output voltage of each magnetic dipole antenna in the magnetic dipole antenna pair under the coupling effect; the phase relationship between the magnetic dipole antennas is configured based on a preset configuration method, and each magnetic dipole antenna generates a coupling effect under the action of the incident electromagnetic wave;

[0134] The direction determination module 1802 is configured to determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna.

[0135] In one embodiment, two magnetic dipole antennas in the magnetic dipole antenna pair are placed back-to-back and parallel to each other, and a preset distance is provided between the magnetic dipole antennas.

[0136] In one embodiment, each magnetic dipole antenna includes a resonant unit, a coupling unit, and an energy integration circuit; the resonant unit generates a magnetic dipole resonance under the action of an incident electromagnetic wave, and an induced alternating current is formed after a coupling effect is generated between the coupling unit and the resonant unit; the induced alternating current is converted into a DC output voltage after passing through the energy integration circuit.

[0137] In one embodiment, the resonant unit, the coupling unit, and the energy integration circuit are all located on a dielectric substrate; there is a coupling relationship between the resonant unit and the coupling unit, and the resonant unit and the coupling unit together form a double-open resonant structure; the coupling unit is connected to the energy integration circuit.

[0138] In one embodiment, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit; the detection circuit is used to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

[0139] In one embodiment, the direction determination module 1802 includes:

[0140] A difference acquisition unit, configured to acquire the difference between the DC output voltages of each magnetic dipole antenna;

[0141] A direction determination unit, configured to determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

[0142] In one embodiment, the direction determination unit includes:

[0143] An angle determination subunit, configured to determine the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna, and the incident angle of the incident electromagnetic wave represents the included angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair;

[0144] A direction determination subunit, configured to determine the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

[0145] Each module in the above signal incident direction device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0146] In one embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 19As shown in the figure. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it realizes a method for determining the incident direction of a signal. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or buttons, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0147] Those skilled in the art can understand that Figure 19 the structure shown in the figure is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0148] In one embodiment, a processing device is provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the following steps are realized:

[0149] Obtain the DC output voltage of each magnetic dipole antenna under the coupling effect;

[0150] Determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna.

[0151] In one embodiment, the two magnetic dipole antennas in the magnetic dipole antenna pair are placed back-to-back and parallel to each other, and a preset distance is provided between each magnetic dipole antenna.

[0152] In one embodiment, each magnetic dipole antenna includes a resonant unit, a coupling unit, and an energy integration circuit; when the processor executes the computer program, the following steps are realized:

[0153] The resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after the coupling unit and the resonant unit generate a coupling effect;

[0154] The induced alternating current is converted into a DC output voltage after passing through the energy integration circuit.

[0155] In one embodiment, the resonant unit, the coupling unit, and the energy integration circuit are all located on a dielectric substrate; there is a coupling relationship between the resonant unit and the coupling unit, and the resonant unit and the coupling unit together form a double-open resonant structure; the coupling unit is connected to the energy integration circuit.

[0156] In one embodiment, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit; the detection circuit is configured to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

[0157] In one embodiment, when the processor executes the computer program, the following steps are further implemented:

[0158] Obtain the difference between the DC output voltages of each magnetic dipole antenna;

[0159] Determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

[0160] In one embodiment, when the processor executes the computer program, the following steps are further implemented:

[0161] Determine the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna, where the incident angle of the incident electromagnetic wave represents the angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair;

[0162] Determine the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

[0163] For the processing device provided in the above embodiment, its implementation principle and technical effects are similar to those of the above method embodiment, and will not be elaborated here.

[0164] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0165] Obtain the DC output voltages of each magnetic dipole antenna under the coupling effect;

[0166] Determine the incident direction of the incident electromagnetic wave according to the DC output voltages of each magnetic dipole antenna.

[0167] In one embodiment, two magnetic dipole antennas in the magnetic dipole antenna pair are placed back-to-back and parallel to each other, and a preset distance is provided between each magnetic dipole antenna.

[0168] In one embodiment, each magnetic dipole antenna includes a resonant unit, a coupling unit, and an energy integration circuit; when the computer program is executed by a processor, the following steps are implemented:

[0169] The resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after a coupling effect occurs between the coupling unit and the resonant unit;

[0170] The induced alternating current is converted into a DC output voltage after passing through the energy integration circuit.

[0171] In one embodiment, the resonant unit, the coupling unit, and the energy integration circuit are all located on a dielectric substrate; there is a coupling relationship between the resonant unit and the coupling unit, and the resonant unit and the coupling unit together form a double-open resonator structure; the coupling unit is connected to the energy integration circuit.

[0172] In one embodiment, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit; the detection circuit is used to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

[0173] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0174] Obtain the difference between the DC output voltages of each magnetic dipole antenna;

[0175] Determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

[0176] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0177] Determine the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna, and the incident angle of the incident electromagnetic wave represents the included angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna;

[0178] Determine the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

[0179] For the computer-readable storage medium provided in the above embodiment, its implementation principle and technical effects are similar to those of the above method embodiment, and will not be elaborated here.

[0180] In one embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0181] Obtain the DC output voltage of each magnetic dipole antenna under the coupling effect;

[0182] Determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna.

[0183] In one embodiment, the two magnetic dipole antennas in the magnetic dipole antenna pair are placed back-to-back and parallel to each other, and a preset distance is provided between each magnetic dipole antenna.

[0184] In one embodiment, each magnetic dipole antenna includes a resonant unit, a coupling unit, and an energy integration circuit; when the computer program is executed by a processor, the following steps are implemented:

[0185] The resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after the coupling unit and the resonant unit generate a coupling effect.

[0186] The induced alternating current is converted into a DC output voltage after passing through the energy integration circuit.

[0187] In one embodiment, the resonant unit, the coupling unit, and the energy integration circuit are all located on a dielectric substrate; the resonant unit and the coupling unit have a coupling relationship, and the resonant unit and the coupling unit together form a double-open resonator structure; the coupling unit is connected to the energy integration circuit.

[0188] In one embodiment, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit; the detection circuit is used to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

[0189] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0190] Obtain the difference between the DC output voltages of each magnetic dipole antenna;

[0191] Determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

[0192] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0193] Determine the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna, and the incident angle of the incident electromagnetic wave represents the angle between the electromagnetic wave transmitting antenna and the central axis of the magnetic dipole antenna pair;

[0194] Determine the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

[0195] A computer program product provided by the above embodiment has the same implementation principle and technical effects as the above method embodiment, and will not be elaborated here.

[0196] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0197] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above method embodiments. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., and are not limited thereto. The processors involved in the embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., and are not limited thereto.

[0198] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0199] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for determining the incident direction of a signal, characterized in that, it is applied to a pair of magnetic dipole antennas, the phase relationship between the magnetic dipole antennas in the pair of magnetic dipole antennas is configured based on a preset configuration method, and coupling occurs between the magnetic dipole antennas under the action of the incident electromagnetic wave; the method includes: acquiring the DC output voltage of each magnetic dipole antenna under the coupling action; determining the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna; the determining the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna includes: acquiring the difference between the DC output voltages of each magnetic dipole antenna; determining the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

2. The method according to claim 1, characterized in that, the two magnetic dipole antennas in the pair of magnetic dipole antennas are placed back-to-back and parallel to each other, and a preset distance is provided between the magnetic dipole antennas.

3. The method according to claim 1 or 2, characterized in that, each magnetic dipole antenna includes a resonant unit, a coupling unit and an energy integration circuit; the resonant unit generates magnetic dipole resonance under the action of the incident electromagnetic wave, and an induced alternating current is formed after coupling occurs between the coupling unit and the resonant unit; the induced alternating current is converted into the DC output voltage after passing through the energy integration circuit.

4. The method according to claim 3, characterized in that, the resonant unit, the coupling unit and the energy integration circuit are all located on a dielectric substrate; the resonant unit and the coupling unit have a coupling relationship, and the resonant unit and the coupling unit together form a double-open resonator structure; the coupling unit is connected to the energy integration circuit.

5. The method according to claim 3, characterized in that, the energy integration circuit includes a detection circuit and a load; the first end of the detection circuit is connected to the first side of the open end of the coupling unit, the second end of the detection circuit is connected to the first end of the load, the second end of the load is connected to the third end of the detection circuit, and the fourth end of the detection circuit is connected to the second side of the open end of the coupling unit; the detection circuit is used to convert the induced alternating current output by the coupling unit into a DC voltage signal to supply power to the load.

6. The method according to claim 1, characterized in that, the determining the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna includes: determining the incident angle of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna, where the incident angle of the incident electromagnetic wave represents the angle between the electromagnetic wave transmitting antenna and the central axis of the pair of magnetic dipole antennas; determining the incident direction of the incident electromagnetic wave according to the incident angle of the incident electromagnetic wave.

7. A device for determining the incident direction of a signal, characterized in that, the device includes: A voltage acquisition module, configured to acquire the DC output voltage of each magnetic dipole antenna in a magnetic dipole antenna pair under the coupling effect; the phase relationship between the magnetic dipole antennas is configured based on a preset configuration method, and each of the magnetic dipole antennas generates a coupling effect under the action of an incident electromagnetic wave; A direction determination module, configured to determine the incident direction of the incident electromagnetic wave according to the DC output voltage of each magnetic dipole antenna; The direction determination module includes: A difference acquisition unit, configured to acquire the difference between the DC output voltages of each magnetic dipole antenna; A direction determination unit, configured to determine the incident direction of the incident electromagnetic wave according to the difference between the DC output voltages of each magnetic dipole antenna.

8. A processing device, characterized in that, it includes a memory and a processor, the memory stores a computer program, and characterized in that when the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. An electronic system, characterized in that, the electronic system includes the processing device according to claim 8 and a magnetic dipole antenna pair; the processing device is configured to execute the steps of the method according to any one of claims 1 to 6.

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