Phased array antenna, transmitting device, wireless power transmission system, and wireless communication system

Abstract

A two-dimensional phased array antenna with a simple structure is provided, which can reduce the number of control systems and control input ports for phase control of antenna elements. The phased array antenna comprises: a plurality of antenna elements arranged in a first direction and a second direction intersecting the first direction; a plurality of mixers that supply transmission signals of a predetermined transmission frequency (f) to each of the plurality of antenna elements; and a mechanism that generates, based on three frequency-controllable input signals of mutually different frequencies, a plurality of first mixed signals having a predetermined first phase difference between adjacent antenna elements in the first direction, and a plurality of second mixed signals having a predetermined second phase difference between adjacent antenna elements in the second direction, and supplies the plurality of first mixed signals and the plurality of second mixed signals to the plurality of mixers.

Description

Technical Field

[0001] The present invention relates to a phased array antenna in which a plurality of antenna elements are arranged, a transmitting device, a wireless power transmission system, and a wireless communication system. Background Art

[0002] Conventionally, there is known an antenna having a plurality of antenna elements arranged two-dimensionally and capable of controlling the directivity pattern of the entire antenna (beamforming) by controlling the phase and amplitude of the signal from each antenna element.

[0003] Patent Document 1 discloses a phased array antenna in which multiple phase shifters are arranged corresponding to a plurality of antenna elements, each controlled by a control device. In this phased array antenna, the control device calculates the phase shift value for each phase shifter and transmits it to each phase shifter. Furthermore, a signal generated by a single signal source is distributed into multiple signals by a distribution circuit. Each of the multiple signals output from this distribution circuit undergoes phase shifting by a phase shifter, is amplified by an amplifier, and supplied to the antenna elements.

[0004] Non-patent document 1 discloses a frequency-controlled one-dimensional phased array antenna, which has multiple mixers arranged in a manner corresponding to multiple antenna elements. In this one-dimensional phased array antenna, each mixer receives: a signal of the local transmission frequency (Δf) with the same phase; and a signal with a predetermined phase difference between the antenna elements in the direction in which the antenna elements are arranged. As a circuit in the control system that supplies a high-frequency (f+Δf) signal to each mixer, a phase difference is formed according to the transmission path length. transmission line (e.g., leaky wave circuit substrate).

[0005] Non-patent document 2 discloses a frequency-controlled two-dimensional phased array antenna, in which a plurality of mixers are provided corresponding to a plurality of antenna elements. In this two-dimensional phased array antenna, with respect to one of two mutually orthogonal antenna element alignment directions, the antenna elements in the antenna element alignment direction have a predetermined phase difference. The local transmission frequency (f LO The signal of +Δf1) is input to the mixer. In addition, regarding another antenna element parallel direction, the antenna elements in the antenna element parallel direction have a predetermined phase difference in sequence. High frequency (f RF +Δf2) is input to the mixer. As a control system, each mixer is supplied with a local transmission frequency (f LO +Δf1) signal, using a circuit with input f LOThe two input ports of the two signals and Δf1 and the input mixer form the above-mentioned specified phase difference according to the transmission path length. Furthermore, as a transmission line (e.g., a leaky wave circuit substrate) for supplying high frequency (f RF +Δf2) signal, using a circuit with input f RF The two input ports of the two signals and Δf2 and the input mixer form the above-mentioned specified phase difference according to the transmission path length. transmission line (e.g., leaky wave circuit substrate).

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent No. 6456579

[0009] Non-patent literature

[0010] Non-patent document 1: JDRoque, GSShiroma and WAShiroma, "A Full-Duplex, Single-Frequency-Controlled Phased Array," 2006 IEEE MTT-S International Microwave Symposium Digest, San Francisco, CA, 2006, pp. 453-456.

[0011] Non-patent document 2: MKWatanabe, RNPang, BOTakase, JMAkagi, GSShiromaand WAShiroma, "A 2-D Phase-Detecting / Heterodyne-Scanning RetrodirectiveArray," in IEEE Transactions on Microwave Theory and Techniques, vol.55, no.12, pp.2856-2864, Dec.2007. Summary of the Invention

[0012] Problems to be solved by the invention

[0013] The above-mentioned conventional phased array antenna has the following problems.

[0014] The phased array antenna of Patent Document 1 requires multiple control systems, each corresponding to a plurality of phase shifters, complicating the control system. In particular, long-distance wireless communications or wireless power transmission using two-dimensional beamforming require a wide-aperture phased array antenna. However, increasing the number of antenna elements required to construct such a wide-aperture phased array antenna and controlling the phase shifters of each antenna element also increases the number of control systems required.

[0015] Furthermore, in the one-dimensional phased array antenna of the aforementioned Non-Patent Document 1, it is not possible to control a two-dimensional directivity pattern (beamforming).

[0016] In the two-dimensional phased array antenna of the above-mentioned non-patent document 2, although the two-dimensional directivity pattern (beamforming) can be controlled with a configuration that reduces the number of control systems, there is a demand to reduce the number of control input ports in the control system to achieve a simple configuration.

[0017] Solutions for solving problems

[0018] A phased array antenna according to one aspect of the present invention comprises: a plurality of antenna elements arranged in a first direction and a second direction intersecting the first direction; a plurality of mixers for supplying transmission signals of a predetermined transmission frequency (f) to each of the plurality of antenna elements; and a mechanism for generating a phased array antenna having a predetermined first phase difference between adjacent antenna elements in the first direction based on three frequency-controllable input signals of mutually different frequencies. The plurality of first mixed signals and the antenna elements adjacent to each other in the second direction have a predetermined second phase difference. The plurality of second mixed signals are supplied to the plurality of mixers, and the plurality of first mixed signals and the plurality of second mixed signals are supplied to the plurality of mixers.

[0019] A phased array antenna according to a first aspect of another aspect of the present invention comprises: a plurality of linear array sections having a plurality of antenna elements arranged in a first direction and arranged in a second direction intersecting the first direction; and a plurality of first mixed signal processing sections arranged so as to correspond to the plurality of linear array sections, comprising a plurality of mixers for supplying transmission signals of a predetermined transmission frequency (f) to the plurality of antenna elements of the linear array sections, and for providing a predetermined first phase difference between adjacent antenna elements in the direction in which the plurality of antenna elements of the linear array sections are arranged. The plurality of first mixed signals of the sum of the transmission frequency (f) and the first variable frequency (Δf1) are supplied to the plurality of mixers; the first signal dividing section becomes a first mixed signal having the first phase difference The first input signal of the reference frequency (f+Δf1) of the plurality of first mixed signals is divided and supplied to the plurality of first mixed signal processing units respectively; the second mixed signal processing unit outputs a predetermined second phase difference between the linear array units adjacent to each other in the parallel direction of the plurality of linear array units. a plurality of second mixed signals of the first variable frequency (Δf1); and a plurality of second signal division units, which are respectively provided in correspondence with the plurality of linear array units, and divide the signals having the second phase difference outputted from the second mixed signal processing unit into the signals having the second phase difference The second mixed signals of the plurality of first variable frequencies (Δf1) are divided and supplied to the plurality of mixers of the linear array section.

[0020] In the phased array antenna of the first embodiment, each of the plurality of first mixed signal processing units may include a first transmission member, wherein the first transmission member receives the first input signal of the frequency (f+Δf1) supplied from the first signal division unit, and forms the first phase difference according to the transmission path length. The first mixed signal of the plurality of frequencies (f+Δf1) is outputted, and the second mixed signal processing unit comprises: a second transmission member which receives a second input signal of a frequency (f+Δf2) which is the sum of the transmission frequency (f) and the second variable frequency (Δf2), and forms the second phase difference according to the transmission path length. and outputs a plurality of intermediate signals of frequencies (f+Δf2); a third signal division portion that divides a third input signal of a frequency (f+Δf2-Δf1) that is a difference between the frequency (f+Δf2) of the intermediate signal and the first variable frequency (Δf1) into a plurality of input signals; and a plurality of mixers that are input with the intermediate signals of the plurality of frequencies (f+Δf2) output from the second transmission member and the third input signal of the frequency (f+Δf2-Δf1) divided by the third signal division portion, and output a plurality of mixers having the second phase difference The second mixed signal of the above-mentioned multiple first variable frequencies (Δf1) is obtained.

[0021] A second aspect of the present invention relates to a phased array antenna comprising: a plurality of linear array sections having a plurality of antenna elements arranged in a first direction and arranged in a second direction intersecting the first direction; and a plurality of first mixed signal processing sections arranged to correspond to the plurality of linear array sections, comprising a plurality of mixers for supplying transmission signals of a predetermined transmission frequency (f) to the plurality of antenna elements of the linear array sections, and for providing a predetermined first phase difference between adjacent antenna elements in the direction in which the plurality of antenna elements of the linear array sections are arranged. and the second phase difference a plurality of first mixed signals of the first variable frequency (Δf1) supplied to the plurality of mixers; a first signal division section which divides a first input signal of a frequency (f+Δf1) which is a sum of the transmission frequency (f) and the first variable frequency (Δf1); a plurality of second signal division sections which are provided in a manner corresponding to the plurality of linear array sections, further divide the first input signal supplied from the first signal division section and supply the divided signals as second mixed signals to the plurality of mixers; and an intermediate signal supply section which divides the linear array sections adjacent to each other in the parallel arrangement direction of the plurality of linear array sections into two intermediate signal division sections having the second phase difference The plurality of intermediate signals of the first variable frequency (Δf1) are supplied to the plurality of first mixed signal processing units.

[0022] In the phased array antenna of the second embodiment, each of the plurality of first mixed signal processing units may include a first transmission member, wherein the first transmission member receives the intermediate signal of the first variable frequency (Δf1) supplied from the intermediate signal supply unit, and forms the first phase difference according to the transmission path length. The intermediate signal supply unit outputs the first mixed signal of the plurality of first variable frequencies (Δf1), and the intermediate signal supply unit includes: a second transmission member, which receives the second input signal of the frequency (f+Δf2) which is the sum of the transmission frequency (f) and the second variable frequency (Δf2), and forms the second phase difference according to the transmission path length. and outputs a plurality of intermediate signals of frequencies (f+Δf2); a third signal division unit, which divides the third input signal of the frequency (f+Δf2-Δf1) which is the difference between the above-mentioned frequency (f+Δf2) and the above-mentioned first variable frequency (Δf1) into a plurality of signals; and a plurality of mixers, which mix the intermediate signals of the above-mentioned multiple frequencies (f+Δf2) output from the above-mentioned second transmission component with the third input signal of the above-mentioned frequency (f+Δf2-Δf1) divided by the above-mentioned third signal division unit and output the above-mentioned multiple intermediate signals of the first variable frequency (Δf1).

[0023] In the phased array antenna, the first transmission member and the second transmission member may each be a transmission line substrate.

[0024] In the above-mentioned phased array antenna, it can also be that there are multiple transmission line substrates, the above-mentioned transmission line substrate has the first transmission component and mixer of the above-mentioned first mixed signal processing unit, and the above-mentioned mixer of the above-mentioned second mixed signal processing unit, the above-mentioned second transmission component of the above-mentioned second mixed signal processing unit or the above-mentioned second transmission component of the above-mentioned intermediate signal supply unit is a waveguide tube, and the output unit that outputs the intermediate signals of the above-mentioned multiple frequencies (f+Δf2) has a converter that converts the above-mentioned waveguide tube into a transmission line.

[0025] A transmitting device according to yet another aspect of the present invention includes: any one of the above-described phased array antennas; and one or more frequency-controllable transmitters that generate the plurality of input signals supplied to the phased array antenna.

[0026] A wireless power transmission system according to yet another aspect of the present invention includes any one of the above-described phased array antennas as a transmitting antenna for wireless power transmission.

[0027] A wireless communication system according to yet another aspect of the present invention includes any one of the above-described phased array antennas as a transmitting antenna for wireless communication.

[0028] Alternatively, the electromagnetic waves transmitted by the phased array antenna may be microwaves or millimeter waves.

[0029] Effects of the Invention

[0030] According to the present invention, it is possible to provide a two-dimensional phased array antenna with a simple structure that can reduce the number of control systems and the number of control input ports for phase control of antenna elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an explanatory diagram showing an example of arrangement of antenna elements of a phased array antenna according to one embodiment of the present invention.

[0032] Figure 2A This is an explanatory diagram showing an example of the main direction of a directional beam that can be controlled in the phased array antenna according to the present embodiment.

[0033] Figure 2B This is an explanatory diagram showing an example of the main direction of a directional beam that can be controlled in the phased array antenna according to the present embodiment.

[0034] Figure 2C This is an explanatory diagram showing an example of the main direction of a directional beam that can be controlled in the phased array antenna according to the present embodiment.

[0035] Figure 3 This is an explanatory diagram showing an example of a schematic configuration of a phased array antenna according to this embodiment.

[0036] Figure 4 It is an explanatory diagram showing the principle of the phased array antenna according to this embodiment.

[0037] Figure 5 It is an explanatory diagram showing an example of the circuit configuration of the phased array antenna according to this embodiment.

[0038] Figure 6 It shows Figure 5 An illustration of an example of a substrate configuration of a phased array antenna.

[0039] Figure 7 It is an explanatory diagram showing a schematic configuration of a phased array antenna according to a comparative reference example.

[0040] Figure 8 This is an explanatory diagram showing another example of the schematic configuration of the phased array antenna according to the present embodiment.

[0041] Figure 9 It shows Figure 8 An illustration of an example of a substrate configuration of a phased array antenna.

[0042] Figure 10 It shows Figure 8 An explanatory diagram showing an example of a high-power configuration of a phased array antenna. DETAILED DESCRIPTION

[0043] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0044] The phased array antenna involved in this embodiment is an antenna device having multiple antenna elements arranged in two or three dimensions. In a phased array antenna, the phase shift and signal of signals transmitted or received between the multiple antenna elements are controlled, enabling beamforming to steer the directional main beam in any desired direction.

[0045] In addition, the phased array antenna of this embodiment is suitable for long-distance wireless communications or large-aperture transmitting phased array antennas in wireless power transmission that require beamforming. In wireless power transmission using microwaves, not only beamforming is required, but also the antenna aperture area corresponding to the transmission distance is required. For example, it is conceivable that in the case of a ground vehicle (the transmission distance is less than 1 meter), the antenna aperture area is 1 square meter (m2). 2), but when the power transmission target is an unmanned aerial vehicle or other flying object flying at a relatively low altitude (for example, below 100 meters) (the power transmission distance is below 100 meters), the antenna opening area is several square meters. Furthermore, when the power transmission target is a stratospheric-staying type UAV, stratospheric platform, HAPS (high altitude platform station, high altitude pseudo satellite) or other flying object flying in the stratosphere at a relatively high altitude (for example, above several hundred meters and below 20 kilometers) (the power transmission distance is below 20 kilometers), the antenna opening area is several tens of square meters. In addition, it can be imagined that when the power transmission target is a space solar power station or the like located at a higher altitude (for example, above tens of kilometers and below 3600 kilometers) (the power transmission distance is below 3600 kilometers), the antenna opening area is several square kilometers (km 2 Since the antenna aperture area increases in proportion to the wireless power transmission distance (increasing the number of antenna elements), a simple and inexpensive phased array antenna is required. The phased array antenna of this embodiment is suitable for such long-distance wireless power transmission systems as a simple, inexpensive, large-aperture phased array antenna capable of beamforming.

[0046] In addition, while this embodiment primarily describes a phased array antenna configured as a transmitting antenna, the phased array antenna of this embodiment can also be configured as a receiving antenna. Furthermore, while this embodiment primarily describes a phased array antenna having 16 (4 × 4) antenna elements arranged two-dimensionally, the number of antenna elements in a phased array antenna is not limited to the example shown.

[0047] Figure 1 : is an explanatory diagram showing an example of arrangement of antenna elements of a phased array antenna according to one embodiment of the present invention. Figure 1 In the figure, the phased array antenna 10 is a wireless transmission device that transmits electromagnetic waves of a predetermined frequency (such as microwaves or millimeter waves) to transmit power, and includes four linear array units 100 (1) to 100 (4). The four linear array units 100 (1) to 100 (4) respectively have four antenna elements 110 (1, 1) to 110 (1, 4), 110 (2, 1) to 110 (2, 4), 110 (3, 1) to 110 (3, 4), and 110 (4, 1) to 110 (4, 4) arranged at a predetermined interval dy in the Y direction (first direction) in the figure. The four linear array units 100 (1) to 100 (4) are arranged at a predetermined interval dx in the X direction (second direction) intersecting the Y direction in the figure. In addition, the interval dy in the Y direction and the interval dx in the X direction (second direction) of the antenna elements 110 can be the same interval d.

[0048] The antenna element 110 is, for example, a dipole antenna, but may also be another type of antenna element, such as a slot antenna, a horn antenna, or a microstrip antenna. Furthermore, the antenna element 110 may be an antenna capable of transmitting and receiving electromagnetic waves with a single polarization plane, or an antenna capable of transmitting and receiving electromagnetic waves with multiple polarization planes or circular polarization planes.

[0049] In the example shown in the figure, the arrangement direction (X direction) of the linear array units 100 (1) to 100 (4) and the arrangement direction (Y direction) of the antenna elements in each linear array unit are substantially orthogonal, but the intersection angle of the arrangement directions may deviate from 90 degrees. In addition, in the example shown in the figure, the arrangement surface of the antenna elements is substantially flat, but the arrangement surface of the antenna elements may also be a curved surface.

[0050] Figures 2A to 2C Each of them is an explanatory diagram showing an example of the main direction of the directional beam Bm that can be controlled in the phased array antenna 10 according to the present embodiment. Figures 2A to 2C The X-axis and Y-axis in the figure are mutually orthogonal coordinate axes (reference axes) defined on the element arrangement plane 10s of the phased array antenna 10 where the antenna elements 110 are arranged. Figure 1 The X direction and Y direction correspond to each other. Figures 2A to 2C The Z axis in φ is an axis perpendicular to the element arrangement plane 10s of the phased array antenna 10. Beam steering can be performed to change the main direction of the directional beam Bm of the phased array antenna 10 about the Z axis.

[0051] exist Figure 2A In the figure, azimuth angle ψa and elevation angle ψe are angles that define the main direction of directional beam Bm of the electromagnetic wave transmitted and received by phased array antenna 10. Azimuth angle ψa is the azimuth angle of the main direction of directional beam Bm and is the angle of projection direction Bm' obtained by projecting the main direction of directional beam Bm onto element arrangement plane 10s with reference to the X-axis, which is the reference axis on element arrangement plane 10s. Elevation angle ψe is the elevation angle of the main direction of directional beam Bm and is the angle of the main direction of directional beam Bm with reference to element arrangement plane 10s.

[0052] Figure 2B The figure shows the beam steering angle θe in the elevation direction relative to the Z axis in the YZ plane, which is the main direction of the directional beam Bm that can be controlled by the phased array antenna 10. The beam steering angle θe in the YZ plane can control the phase difference between the antenna elements arranged in the Y direction of the linear array unit 100. And make it change.

[0053] Figure 2CThe figure shows the beam steering angle θa in the azimuth direction relative to the Z axis in the ZX plane, which is the main direction of the directional beam Bm that can be controlled by the phased array antenna 10. The beam steering angle θa in the ZX plane can control the second phase difference between the antenna elements arranged in the X direction of the linear array unit 100. And make it change.

[0054] Figure 3 This is an explanatory diagram showing an example of the schematic configuration of the phased array antenna 10 according to this embodiment. In addition to the aforementioned plurality of linear array units 100 ( 1 ) to 100 ( 4 ), the phased array antenna 10 further includes: a plurality of first mixed signal processing units 120 ; a first signal division unit 141 ; a second mixed signal processing unit 130 ; and a plurality of second signal division units 142 .

[0055] The plurality of first mixed signal processing units 120 are provided in a manner corresponding to the plurality of linear array units 100 (1) to 100 (4), and have a plurality of mixers for supplying a transmission signal of a predetermined transmission frequency f to the plurality of antenna elements 110 of the linear array unit 100. The plurality of first mixed signal processing units 120 convert the plurality of first mixed signals S having a frequency (f+Δf1) which is the sum of the transmission frequency f and the first variable frequency (Δf1) into a mixed signal. RF Supply to multiple mixers.

[0056] A plurality of first mixed signals S having the above-mentioned frequency (f+Δf1) RF There is a predetermined first phase difference between mutually adjacent antenna elements in the parallel arrangement direction of the plurality of antenna elements 110 of the linear array unit 100. 1st phase difference It is used to set the beam steering angle θe in the elevation direction corresponding to the elevation angle ψe which is the elevation angle of the main direction of the directional beam Bm (see Figure 2B ) phase difference.

[0057] The first signal division unit 141 divides the first input signal S of the frequency (f+Δf1) input from the first input port 151 into RF1 The first input signal S is divided and supplied to the plurality of first mixed signal processing units 120. RF1 is used to generate the first phase difference Multiple first mixed signals S RF The reference signal.

[0058] The second mixed signal processing unit 130 processes the mixed signal based on the second input signal S having a frequency (f+Δf2) input from the second input port 152. RF2 , and the third input signal S of frequency (f+Δf2[0]-Δf1[0]) input from the third input port 153RF3 , outputs a plurality of second mixed signals S having a first variable frequency (Δf1) LO The first variable frequency (Δf1) can be set by changing it through control. In addition, Δf2 among the above-mentioned frequency (f+Δf2) and the above-mentioned frequency (f+Δf2[0]-Δf1[0]) is the second variable frequency (Δf2) that can be set by changing it through control.

[0059] Multiple second mixed signals S LO There is a predetermined second phase difference between adjacent linear array units in the parallel arrangement direction of the plurality of linear array units 100 ( 1 ) to 100 ( 4 ) Second phase difference It is used to set the beam steering angle θa in the azimuth direction corresponding to the azimuth angle ψa which is the main direction of the directional beam Bm (see Figure 2C ) phase difference.

[0060] The plurality of second signal division units 142 are constituted by, for example, Wilkinson dividers and are provided so as to correspond to the plurality of linear array units 100 (1) to 100 (4). The plurality of second signal division units 142 divide the signals having the second phase difference outputted from the second mixed signal processing unit 130 into the signals having the second phase difference The second mixed signal S of the plurality of first variable frequencies (Δf1) LO The signals are divided and supplied to the plurality of mixers in the linear array section 100 .

[0061] Figure 4 It is an explanatory diagram showing the principle of the phased array antenna 10 according to this embodiment. Figure 4 FIG. 1 shows an example of a circuit configuration of the first mixed signal processing unit 120 corresponding to one linear array unit in the phased array antenna 10. Figure 4 In the example, the number of antenna elements 110(1) to 110(5) included in a linear array unit is five, but the number of antenna elements included in the linear array unit is not limited to the case shown in the figure. In addition, the variable frequency Δf in the figure corresponds to the aforementioned Δf1, and the phase difference The first phase difference In addition, the second mixed signal processing unit 130 can also be used in the same manner as Figure 4 The first mixed signal processing unit 120 outputs the second phase difference Multiple signals.

[0062] exist Figure 4In the embodiment, the first mixed signal processing unit 120 includes: a first transmission member 121; a plurality of mixers 122(1) to 122(5); and a plurality of low-pass filters (LPFs) 123(1) to 123(5). The first transmission member 121 is formed of a traveling wave type series power distribution circuit substrate such as a microstrip line, and has a phase constant β of the transmission line when the electromagnetic wave propagates in the longitudinal direction. The phase constant β is expressed by the following equation (1).

[0063] [Mathematical formula 1]

[0064]

[0065] The high-frequency signal (first reference signal) input from the first terminal (input terminal) 121b of the first transmission member 121 propagates in the longitudinal direction and is output from the second terminal 121c to the load resistor 121a. Between the adjacent terminals (interval l) of the plurality of output terminals 121d(1) to 121d(5) of the first transmission member 121 through which the signal (first reference signal) propagates, a phase difference expressed by the following equation (2) is generated: Here, in equation (2), l is the length of the transmission line between the output terminals 121d, and c is the phase velocity in the transmission line.

[0066] [Mathematical formula 2]

[0067]

[0068] The phase difference between the output terminals 121d(1) to 121d(5) of the first transmission member 121 is Multiple RF signals are input as first mixed signals to multiple mixers 122(1) to 122(5). In addition, a local transmission signal (LO signal) of variable frequency Δf is input as a second mixed signal to multiple mixers 122(1) to 122(5). The signals output from the multiple mixers 122(1) to 122(5) are expressed by the following equation (3) at the nth mixer viewed from the first terminal (input terminal) 121b.

[0069] [Mathematical formula 3]

[0070]

[0071] The signals output from the plurality of mixers (mixers) 122 (1) to 122 (5) are filtered by a plurality of low-pass filters (LPFs) 123 (1) to 123 (5) to remove the first term on the right side of the above equation (3) and are converted into phase difference signals. The frequency f(0), The multiple transmission signals are output to the multiple antenna elements 110 (1) to 110 (5). The output signal to the n-th antenna is expressed by the following equation (4), for example.

[0072] [Formula 4]

[0073]

[0074] By performing frequency control to change the frequency of the variable frequency Δf as shown in the above equation (4), the phase difference between the antenna elements 110 can be controlled.

[0075] Figure 5 is an explanatory diagram showing an example of the circuit configuration of the phased array antenna according to this embodiment. Figure 5 In the example of , for the convenience of illustration, four antenna elements 110 are described as part of a plurality of antenna elements (4×4=16 elements) included in one linear array unit. Figure 5 In the circuit configuration, the Figure 4 Common description.

[0076] exist Figure 5 In the embodiment, each of the plurality of first mixed signal processing units 120 includes a first transmission member 121. The first transmission member 121 is formed of, for example, a leaky wave circuit substrate. The first input signal S of a frequency (f+Δf1) supplied from the first signal dividing unit 141 is input to the first transmission member 121. RF1 As a reference signal, a first phase difference is formed according to the transmission path length. And output the first mixed signal of multiple frequencies (f+Δf1).

[0077] The second mixed signal processing section 130 includes a second transmission means 131 , a third signal division section 143 , and a plurality of mixers 132 .

[0078] The second transmission member 131 is composed of, for example, a traveling wave type series power distribution circuit substrate as a transmission line substrate. The second input signal having a frequency (f+Δf2) which is the sum of the transmission frequency (f) and the second variable frequency (Δf2) is inputted from the second input port 152 to the second transmission member 131, and a second phase difference is formed according to the transmission path length. And outputs intermediate signals of multiple frequencies (f+Δf2) to be supplied to multiple mixers 132.

[0079] The third signal dividing unit 143 is composed of, for example, a Wilkinson power divider. LOThe third input signal S is a frequency (f+Δf2-Δf1) which is the difference between the frequency (f+Δf2) and the first variable frequency (Δf1). RF3 Divide into multiple parts. The third input signal S RF3 Input is received from the third input port 153 .

[0080] The plurality of mixers 132 are input with the intermediate signals of the plurality of frequencies (f+Δf2) output from the second transmission member 131 (see the above formula (5)) and the third input signal S of the frequency (f+Δf2-Δf1) divided by the third signal division unit 143. RF3 , and outputs the second phase difference through multiple low-pass filters (LPF) 133 The second mixed signal S of the plurality of first variable frequencies (Δf1) LO .

[0081] Signals output from the plurality of mixers 132 are expressed by the following equation (5): Here, equation (5) assumes the n2-th output port of the second transmission member 131 .

[0082] [Formula 5]

[0083]

[0084] The signals output from the plurality of mixers 132 are filtered by the plurality of low-pass filters (LPFs) 133 to remove the first term on the right side of the above equation (5) and are converted into the signals having the second phase difference The second mixed signal S of the plurality of first variable frequencies (Δf1) LO The signal is output to the second signal division unit 142 of the plurality of first mixed signal processing units 120 .

[0085] The second signal division unit 142 divides the mixed signal having the second phase difference output from the second mixed signal processing unit 130 into The second mixed signal S of the first variable frequency (Δf1) LO The signal is divided and supplied to the plurality of mixers 122 of the first mixed signal processing section 120. In addition, the plurality of mixers 122 receive a signal having a first phase difference as the first mixed signal. The first mixed signal of frequency (f + Δf1) is obtained by multiplying the mixed signals of frequency (f + Δf1) by the first mixed signal processing unit 120 and the second mixed signal processing unit 130. The signals output from the plurality of mixers 122 are expressed by the following equation (6). In equation (6), n1 and n2 are the output port numbers of the first mixed signal processing unit 120 and the second mixed signal processing unit 130 as viewed from the first terminal (input terminal) 121b of the output terminal 121d.

[0086] [Formula 6]

[0087]

[0088] The signals output from the plurality of mixers 122 are filtered by the plurality of low-pass filters (LPFs) 123 to remove the first term on the right side of the above equation (6) and are converted into the first phase difference signal. and the second phase difference A plurality of transmission signals of a frequency f are output to a plurality of antenna elements 110. The output signal is expressed by, for example, the following equation (7).

[0089] [Formula 7]

[0090]

[0091] Figure 6 It shows Figure 5 An explanatory diagram of an example of the substrate structure of the phased array antenna 10. Figure 6 In the phased array antenna 10, a plurality of first mixed signal processing units 120 are formed on the back side of an antenna main substrate 111 having a plurality of antenna elements formed on the front side. A plurality of second signal division units 142 in the shape of a long substrate are arranged so as to extend along the longitudinal direction of the plurality of first mixed signal processing units 120. A second mixed signal processing unit 130 in the shape of a long substrate is arranged so as to span the entirety of the plurality of second signal division units 142. A first signal division unit 141 in the shape of a long substrate is arranged on the side portion of the antenna main substrate 111 near one end in the longitudinal direction of the plurality of first mixed signal processing units 120 so as to correspond to the end of the plurality of first mixed signal processing units 120. The first signal division unit 141 divides the first input signal S of the frequency (f+Δf1) into RF1 The mixed signal is supplied to the plurality of first mixed signal processing units 120 , respectively.

[0092] according to Figure 5 and Figure 6 In the configuration example of the phased array antenna 10, the number of input ports 151 to 153 can be reduced to three, and in the case of 4×4=16 antenna elements 110, the number of mixers can be reduced to 20. For example, when the number of antenna elements 110 is set to n×n, the number of mixers can be reduced to n×(n+1). In addition, the number of signal division units 141 to 143 can also be reduced to three. Moreover, the overall thickness of the phased array antenna 10 can be reduced to the sum of the width of the substrate of the second mixed signal processing unit 130 and the width of the substrate of the second signal division unit 142.

[0093] Figure 7It is an explanatory diagram showing the circuit configuration of a phased array antenna according to a comparative reference example. Figure 7 The structure is a circuit structure corresponding to the phased array antenna disclosed in the aforementioned non-patent document 2. Figure 7 The circuit configuration of the phased array antenna requires four more input ports 161 to 164 than the circuit configuration of this embodiment, and the number of mixers 122, 124, 132, and 135 is also greater than that of the circuit configuration of this embodiment. For example, in the case of 4×4=16 antenna elements 110, the number of mixers is 27. When the number of antenna elements 110 is set to n×n, the number of mixers is (n+1). 2 +2. In addition, the number of signal division units 144 to 149 is 6, which is also more than the circuit configuration of this embodiment. Figure 7 The overall thickness of the phased array antenna 10 is approximately three times the width of the substrate, which is thicker than the circuit configuration of this embodiment.

[0094] Figure 8 : is an explanatory diagram showing another example of the schematic configuration of the phased array antenna according to this embodiment. Figure 8 In the example of FIG, for the convenience of illustration, four antenna elements 110 are described as part of a plurality of antenna elements (4×4=16 elements) included in one linear array unit. Figure 8 In the circuit configuration, the Figure 4 and Figure 5 Common description.

[0095] exist Figure 8 In the embodiment, the plurality of first mixed signal processing sections 120 include a plurality of mixers 122 for supplying transmission signals of a predetermined transmission frequency (f) to the plurality of antenna elements 110 of the linear array section. The plurality of first mixed signal processing sections 120 provide a predetermined first phase difference between mutually adjacent antenna elements in the parallel arrangement direction of the plurality of antenna elements 110 of the linear array section. and the second phase difference The plurality of first mixed signals having the first variable frequency (Δf1) are supplied to the plurality of mixers 122 .

[0096] The first signal division unit 141 divides the first input signal having a frequency (f+Δf1) which is the sum of the transmission frequency (f) and the first variable frequency (Δf1).

[0097] The plurality of second signal division units 142 are provided corresponding to the plurality of linear array units, and further divide the first input signal of frequency (f+Δf1) supplied from the first signal division unit 141 and supply the divided signal as the second mixed signal to the plurality of mixers 122 .

[0098] exist Figure 8 In the example, the second mixed signal processing unit 130 functions as an intermediate signal supply unit. The intermediate signal supply unit 130 provides the second phase difference The intermediate signals S of the plurality of first variable frequencies (Δf1) LO The mixed signal is supplied to the plurality of first mixed signal processing units 120 .

[0099] exist Figure 8 In the embodiment, the plurality of first mixed signal processing units 120 are respectively provided with a first transmission member 121, and the first transmission member 121 is input with a second phase difference supplied from the intermediate signal supply unit 130. The intermediate signal of the first variable frequency (Δf1) forms the first phase difference according to the transmission path length. And the first mixed signals of the plurality of first variable frequencies (Δf1) are output.

[0100] The intermediate signal supply unit 130 includes a second transmission member 131 , a third signal division unit 143 , and a plurality of mixers 132 .

[0101] The second transmission member 131 receives a second input signal S having a frequency (f+Δf2) which is the sum of the transmission frequency (f) and the second variable frequency (Δf2). RF2 , forming the second phase difference according to the transmission path length And output intermediate signals of multiple frequencies (f+Δf2).

[0102] The third signal division unit 143 divides the third input signal S having a frequency (f+Δf2-Δf1) which is the difference between the frequency (f+Δf2) and the first variable frequency (Δf1). RF3 Split into multiple.

[0103] The plurality of mixers 132 transmit the second transmission member 131 with a second phase difference The intermediate signals of the multiple frequencies (f+Δf2) are mixed with the third input signal of the frequency (f+Δf2-Δf1) divided by the third signal division unit 143, and output with the second phase difference through multiple low-pass filters (LPF) 133. The intermediate signals S of the plurality of first variable frequencies (Δf1) LO . A plurality of intermediate signals S of the first variable frequency (Δf1) LO The first transmission member 121 supplies the mixed signal to the plurality of first mixed signal processing units 120 .

[0104] In the plurality of mixers 122, the first transmission members 121 of the plurality of first mixed signal processing units 120 input the first phase difference and the second phase difference The plurality of first mixed signals of the first variable frequency (Δf1) are inputted, and the second mixed signals of the frequency (f+Δf1) are inputted from the plurality of second signal division units 142.

[0105] The signals output from the plurality of mixers 122 are converted into a signal having a first phase difference by passing through a plurality of low-pass filters (LPFs) 123. and the second phase difference A plurality of transmission signals of frequency f are output to a plurality of antenna elements 110 .

[0106] Figure 9 It shows Figure 8 This is an illustration of an example of the substrate configuration of a phased array antenna. Figure 9 Regarding the aforementioned Figure 6 The common parts are omitted. Figure 9 In the substrate structure, a first signal division portion 141 in the shape of a long substrate is arranged in a manner spanning the entirety of a plurality of second signal division portions 142. The first signal division portion 141 divides the first input signal of the frequency (f+Δf1) and supplies it to the plurality of second signal division portions 142 respectively. In addition, a second mixed signal processing portion 130 in the shape of a long substrate is arranged on the side of the antenna main substrate 111 close to one end portion in the long side direction of the plurality of first mixed signal processing portions 120 in a manner corresponding to the end portion of the plurality of first mixed signal processing portions 120. The second mixed signal processing portion 130 supplies the intermediate signal S of the first variable frequency (Δf1) to the plurality of first mixed signal processing portions 120 respectively. LO The second mixed signal processing unit 130 receives the second input signal S having a frequency of (f+Δf2). RF2 , and a plurality of third input signals S of frequency (f+Δf2-Δf1) divided by the third signal division unit 143 are input. RF3 .

[0107] according to Figure 8 and Figure 9 The configuration example of the phased array antenna 10 is the same as the aforementioned Figure 5 and Figure 6Similarly to the configuration example, the number of input ports 151-153 can be reduced to three, and in the case of 4×4=16 antenna elements 110, the number of mixers can be reduced to 20. For example, when the number of antenna elements 110 is n×n, the number of mixers can be reduced to n×(n+1). Furthermore, the number of signal splitters 141-143 can also be reduced to three. Furthermore, the overall thickness of the phased array antenna 10 can be reduced to the sum of the width of the substrate of the second mixed signal processing unit 130 and the width of the substrate of the second signal splitter 142.

[0108] Figure 10 It shows Figure 8 This figure shows an example of a high-power phased array antenna configuration. Figure 10 In the configuration example, there are a plurality of transmission line substrates 125 arranged in parallel with each other at a predetermined interval. The plurality of transmission line substrates 125 respectively have the first transmission member 121 and the plurality of mixers 122 of the aforementioned first mixed signal processing unit 120, and the mixer 132 of the aforementioned second mixed signal processing unit 130. In addition, as the second transmission member of the aforementioned second mixed signal processing unit 130, a waveguide 135 extending in the parallel direction of the plurality of transmission line substrates 125 is provided. A high-power transmitter 170 is mounted at the end of the waveguide 135. The high-power transmitter 170 radiates electromagnetic waves of a frequency (f+Δf2) into the waveguide 135 via the coupler 136.

[0109] The electromagnetic wave of frequency (f+Δf2) introduced from the end of the waveguide 135 propagates along the longitudinal direction of the waveguide 135 and is sequentially supplied to the ends of the plurality of transmission line substrates 125 via the waveguide-transmission line converter 137. The mixer 132 receives the input of the electromagnetic wave supplied to the end of the transmission line substrate 125 with a second phase difference between the linear array units. The mixer 132 has a second phase difference between the linear array units. The intermediate signal of the frequency (Δf1) is supplied to the first transmission member 121.

[0110] according to Figure 10 The phased array antenna 10 can transmit high-power electromagnetic waves with a simple structure, and can control the directional beam Bm in an arbitrary direction.

[0111] As described above, the phased array antenna 10 of this embodiment can provide a two-dimensional phased array antenna with a simple configuration that can reduce the number of control systems and control input ports for phase control of the antenna elements 110 .

[0112] Furthermore, the phased array antenna 10 of this embodiment can suppress the number of control systems for phase control of the antenna element 110 without limiting the variable angle range of the main direction of the directional beam Bm, compared to conventional phased array antennas composed of subarrays, and can be configured to be simple and inexpensive.

[0113] The phased array antenna 10 of this embodiment can constitute a transmitting device by being combined with one or more frequency-controllable transmitters that generate the aforementioned multiple input signals supplied to the phased array antenna 10. Furthermore, the phased array antenna 10 of this embodiment can be used as at least one of a transmitting antenna or a receiving antenna for wireless power transmission in a wireless power transmission system, or as at least one of a transmitting antenna or a receiving antenna for wireless communication in a wireless communication system.

[0114] Furthermore, the processing steps and components of the phased array antenna, transmitter, wireless power transmission system, and wireless communication system described in this specification can be implemented by various means. For example, these steps and components can be implemented by hardware, firmware, software, or a combination thereof.

[0115] Regarding hardware implementation, the processing units and other means used in an entity (for example, various wireless communication devices, Node B, terminal, hard disk drive device or optical disk drive device) to implement the above-mentioned processes and constituent elements can be implemented in one or more application-specific ICs (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, electronic devices, other electronic units designed to perform the functions described in this specification, computers or combinations thereof.

[0116] In addition, with respect to firmware and / or software implementation, the processing units and other means used to implement the above-mentioned constituent elements can be implemented by programs (e.g., codes of procedures, functions, modules, instructions, etc.) that execute the functions described in this specification. Generally speaking, any computer / processor-readable medium that tangibly embodies the code of firmware and / or software can also be used to implement the processing units and other means used to implement the above-mentioned processes and constituent elements described in this specification. For example, firmware and / or software codes can also be stored in a memory, such as a control device, and executed by a computer or processor. The memory can be implemented inside a computer or processor, or it can also be implemented outside a processor. In addition, firmware and / or software codes can also be stored in, for example, a computer or processor-readable medium such as a random access memory (RAM), a read-only memory (ROM), a non-volatile random access memory (NVRAM), a programmable read-only memory (PROM), an electrically erasable PROM (EEPROM), a flash memory, a floppy disk (registered trademark), a compact disk (CD), a digital versatile disk (DVD), a magnetic or optical data storage device, etc. This code may be executed by one or more computers or processors, and may also cause the computers or processors to perform any aspect of the functionality described in this specification.

[0117] Furthermore, the medium may be a non-transitory recording medium. Furthermore, the program code may be in any form, as long as it can be read and executed by a computer, processor, or other device or apparatus. For example, the program code may be any one of source code, object code, and binary code, or may be a mixture of two or more of these.

[0118] In addition, the descriptions of the embodiments disclosed in this specification are provided to enable those skilled in the art to make or use the present invention. Various modifications to the present invention will be readily apparent to those skilled in the art, and the general principles defined in this specification can be applied to other variations without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the examples and designs described in this specification, but should be construed as having the widest scope consistent with the principles and novel features disclosed in this specification.

[0119] Description of Reference Numerals

[0120] 10: Phased Array Antenna

[0121] 100: Linear array unit

[0122] 110: Antenna element

[0123] 111: Antenna main substrate

[0124] 120: First mixed signal processing unit

[0125] 121: First transmission component

[0126] 122: Mixer

[0127] 125: Transmission line substrate

[0128] 130: Second mixed signal processing unit, intermediate signal supply unit

[0129] 131: Second transmission component

[0130] 132: Mixer

[0131] 135: Waveguide

[0132] 136: Coupler

[0133] 137: Transmission Line Converter

[0134] 141: 1st signal division unit

[0135] 142: 2nd signal division unit

[0136] 143: 3rd signal division unit

[0137] 151: First input port

[0138] 152: Second input port

[0139] 153: 3rd input port

[0140] 170: High-power transmitter.

Claims

1. A phased array antenna, characterized in that: have: a plurality of antenna elements arranged in a first direction and a second direction intersecting the first direction; a plurality of mixers for supplying transmission signals of a predetermined transmission frequency f to the plurality of antenna elements; a mechanism for generating, based on three frequency-controllable input signals of mutually different frequencies, a plurality of first mixed signals having a predetermined first phase difference Δφ1 between mutually adjacent antenna elements in the first direction, and a plurality of second mixed signals having a predetermined second phase difference Δφ2 between mutually adjacent antenna elements in the second direction, and supplying the plurality of first mixed signals and the plurality of second mixed signals to the plurality of mixers; a plurality of linear array sections having a plurality of antenna elements arranged in a first direction and arranged in a second direction intersecting the first direction; a plurality of first mixed signal processing units, each provided so as to correspond to the plurality of linear array units, and comprising a plurality of mixers for supplying a transmission signal having a predetermined transmission frequency f to the plurality of antenna elements of the linear array units, wherein a plurality of first mixed signals having a frequency f+Δf1, which is a sum of the transmission frequency f and a first variable frequency Δf1, having a predetermined first phase difference Δφ1 between adjacent antenna elements in a parallel arrangement direction of the plurality of antenna elements of the linear array units, are supplied to the plurality of mixers; a first signal dividing section for dividing a first input signal of a frequency f+Δf1 serving as a reference for the plurality of first mixed signals having the first phase difference Δφ1 and supplying the divided signal to the plurality of first mixed signal processing sections; a second mixed signal processing section configured to output a plurality of second mixed signals of the first variable frequency Δf1 having a predetermined second phase difference Δφ2 between adjacent linear array sections in a parallel arrangement direction of the plurality of linear array sections; as well as A plurality of second signal division units are provided corresponding to the plurality of linear array units, respectively, to divide the second mixed signals of the plurality of first variable frequencies Δf1 having the second phase difference Δφ2 output from the second mixed signal processing unit and supply the divided signals to the plurality of mixers of the linear array unit.

2. The phased array antenna according to claim 1, wherein: The plurality of first mixed signal processing units each include a first transmission member, each of which receives the first reference signal of the frequency f+Δf1 supplied from the first signal division unit, forms the first phase difference Δφ1 according to the transmission path length, and outputs the plurality of first mixed signals of the frequency f+Δf1. The second mixed signal processing unit includes: a second transmission member which receives a second input signal having a frequency f+Δf2, which is the sum of the transmission frequency f and the second variable frequency Δf2, forms the second phase difference Δφ2 according to the transmission path length, and outputs a plurality of intermediate signals having the frequency f+Δf2; a third signal division unit for dividing a third input signal having a frequency f+Δf2-Δf1, which is a difference between the frequency f+Δf2 of the intermediate signal and the first variable frequency Δf1, into a plurality of signals; as well as A plurality of mixers are input with the intermediate signals of the plurality of frequencies f+Δf2 output from the second transmission member and the third input signal of the frequency f+Δf2-Δf1 divided by the third signal dividing portion, and output second mixed signals of the plurality of first variable frequencies Δf1 having the second phase difference Δφ2.

3. The phased array antenna according to claim 2, wherein: The first transmission member and the second transmission member are transmission line substrates, respectively.

4. The phased array antenna according to claim 2, wherein: A plurality of transmission line substrates are provided, each of the transmission line substrates having the first transmission member and the plurality of mixers of the first mixed signal processing section, and the mixer of the second mixed signal processing section. The second transmission means of the second mixed signal processing section is a waveguide, and an output section outputting the intermediate signals of the plurality of frequencies f+Δf2 includes a converter for converting the waveguide into a transmission line.

5. A phased array antenna, characterized in that: have: a plurality of antenna elements arranged in a first direction and a second direction intersecting the first direction; a plurality of mixers for supplying transmission signals of a predetermined transmission frequency f to the plurality of antenna elements; a mechanism for generating, based on three frequency-controllable input signals of mutually different frequencies, a plurality of first mixed signals having a predetermined first phase difference Δφ1 between mutually adjacent antenna elements in the first direction, and a plurality of second mixed signals having a predetermined second phase difference Δφ2 between mutually adjacent antenna elements in the second direction, and supplying the plurality of first mixed signals and the plurality of second mixed signals to the plurality of mixers; and a plurality of linear array sections having a plurality of antenna elements arranged in the first direction and arranged in a second direction intersecting the first direction; a plurality of first mixed signal processing units, each provided so as to correspond to the plurality of linear array units, and comprising a plurality of mixers for supplying a transmission signal of a predetermined transmission frequency f to the plurality of antenna elements of the linear array units, wherein the plurality of first mixed signals having a first variable frequency Δf1 with predetermined first phase differences Δφ1 and second phase differences Δφ2 between adjacent antenna elements in a direction in which the plurality of antenna elements of the linear array units are arranged are supplied to the plurality of mixers; a first signal dividing unit for dividing a first input signal having a frequency f+Δf1 which is a sum of the transmission frequency f and the first variable frequency Δf1; a plurality of second signal division units provided corresponding to the plurality of linear array units, further dividing the first input signal supplied from the first signal division unit and supplying the second mixed signals to the plurality of mixers; as well as The intermediate signal supply unit supplies the intermediate signals of the first variable frequency Δf1 having the second phase difference Δφ2 between adjacent linear array units in the parallel arrangement direction to the first mixed signal processing units.

6. The phased array antenna according to claim 5, characterized in that: Each of the plurality of first mixed signal processing units includes a first transmission member, which receives the intermediate signal of the first variable frequency Δf1 supplied from the intermediate signal supply unit, forms the first phase difference Δφ1 according to the transmission path length, and outputs the plurality of first mixed signals of the first variable frequency Δf1. The intermediate signal supply unit includes: a second transmission member which receives a second input signal having a frequency f+Δf2, which is the sum of the transmission frequency f and the second variable frequency Δf2, forms the second phase difference Δφ2 according to the transmission path length, and outputs a plurality of intermediate signals having the frequency f+Δf2; a third signal dividing unit for dividing a third input signal having a frequency f+Δf2-Δf1, which is a difference between the frequency f+Δf2 and the first variable frequency Δf1, into a plurality of signals; as well as A plurality of mixers mix the plurality of intermediate signals of the frequencies f+Δf2 outputted from the second transmission means with the third input signal of the frequency f+Δf2-Δf1 divided by the third signal dividing portion and output the plurality of intermediate signals of the first variable frequency Δf1.

7. The phased array antenna according to claim 6, wherein: The first transmission member and the second transmission member are transmission line substrates, respectively.

8. The phased array antenna according to claim 6, wherein: A plurality of transmission line substrates are provided, each of the transmission line substrates having the first transmission member and the plurality of mixers of the first mixed signal processing section, and the mixers of the intermediate signal supply section. The second transmission member of the intermediate signal supply unit is a waveguide, and an output unit that outputs the intermediate signals of the plurality of frequencies f+Δf2 includes a converter that converts the waveguide into a transmission line.

9. A sending device, characterized in that: have: The phased array antenna of any one of claims 1 to 8; and One or more frequency controllable transmitters generate the plurality of input signals supplied to the phased array antenna.

10. A wireless power transmission system, characterized in that: The phased array antenna according to any one of claims 1 to 8 is provided as a transmitting antenna for wireless power transmission.

11. A wireless communication system, characterized in that: The phased array antenna according to any one of claims 1 to 8 is provided as a transmitting antenna for wireless communication.

Images