WO2024034421A1 - Dispositif de communication sans fil - Google Patents

Dispositif de communication sans fil Download PDF

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Publication number
WO2024034421A1
WO2024034421A1 PCT/JP2023/027573 JP2023027573W WO2024034421A1 WO 2024034421 A1 WO2024034421 A1 WO 2024034421A1 JP 2023027573 W JP2023027573 W JP 2023027573W WO 2024034421 A1 WO2024034421 A1 WO 2024034421A1
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WO
WIPO (PCT)
Prior art keywords
window glass
power
unit
antenna
communication device
Prior art date
Application number
PCT/JP2023/027573
Other languages
English (en)
Japanese (ja)
Inventor
崚太 奥田
康太郎 榎本
康夫 森本
健一 岩上
翔 熊谷
Original Assignee
Ａｇｃ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ａｇｃ株式会社 filed Critical Ａｇｃ株式会社
Publication of WO2024034421A1 publication Critical patent/WO2024034421A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

Definitions

  • the present disclosure relates to a wireless communication device.
  • relay systems that enable the introduction of signals into buildings, and that include a first circuit and a second circuit.
  • the first circuit is located outside the building and receives the millimeter wave signal and converts it to a first format.
  • a second circuit is located inside the building and communicatively linked to the first circuit to receive the first type of millimeter wave signal and convert the second type of signal into a second type for transmission to a wireless device within the building. Convert. Further, the first circuit is provided on the outer surface of the building of the glass plate of the window glass, the second circuit is provided on the inner surface of the building of the glass plate of the window glass, and the first circuit is provided between the first circuit and the second circuit. describes that power is supplied using an optical dielectric or an optical power coupler (see, for example, Patent Document 1).
  • a wireless communication device includes an antenna element, a phase shifter connected to the antenna element, and an antenna disposed overlapping the dielectric plate of a window glass having a dielectric plate. , a relay unit disposed on the window glass that relays radio waves received by the antenna; a control unit disposed on the window glass that controls the amount of phase change of the radio waves in the phase shifter; a power receiving unit that is placed in a structure surrounding the window glass and supplies received power to the phase shifter, the relay unit, and the control unit; and a power receiving unit that is placed in a structure around the window glass and wirelessly supplies power to the power receiving unit. and a wireless power supply unit.
  • FIG. 2 is a diagram illustrating an example of a building in which a window in which a wireless communication device according to an embodiment is installed is installed.
  • 1 is a diagram illustrating an overview of a wireless communication device and an example of how it is attached to a building
  • FIG. 1 is a diagram illustrating an overview of a wireless communication device and an example of how it is attached to a building
  • FIG. 1 is a diagram illustrating an example of a configuration of a wireless communication device.
  • 1 is a diagram illustrating an example of a circuit configuration of a wireless communication device.
  • FIG. 3 is a diagram illustrating an example of a circuit configuration of a wireless communication device according to a first modification of the embodiment.
  • FIG. 7 is a diagram illustrating an example of a circuit configuration of a wireless communication device according to a second modification of the embodiment.
  • FIG. 7 is a diagram showing an example of a circuit configuration of a wireless communication device according to a third modification of the embodiment. It is a figure which shows the window of the 4th modification of embodiment. It is a figure which shows the window of the 5th modification of embodiment.
  • the XYZ coordinate system will be defined and explained.
  • the direction parallel to the X axis (X direction), the direction parallel to the Y axis (Y direction), and the direction parallel to the Z axis (Z direction) are orthogonal to each other.
  • the XYZ coordinate system is an example of a Cartesian coordinate system.
  • the length, thickness, thickness, etc. of each part may be exaggerated to make the configuration easier to understand.
  • words such as “parallel,” “perpendicular,” “horizontal,” “perpendicular,” and “up and down” may be deviated to the extent that the effects of the embodiments are not impaired.
  • radio wave is a type of electromagnetic wave, and generally, electromagnetic waves of 3 THz or less are called radio waves.
  • electromagnetic waves of 3 THz or less emitted from outdoor base stations or relay stations will be referred to as “radio waves,” and when referring to electromagnetic waves in general, they will be referred to as “electromagnetic waves.”
  • the radio waves relayed by the wireless communication device of the embodiment are preferably radio waves in a millimeter wave band such as a fifth generation mobile communication system (5G) or a frequency band of 1 GHz to 30 GHz including Sub-6.
  • the radio waves relayed by the wireless communication device of the embodiment may be LTE (Long Term Evolution), LTE-A (LTE-Advanced), UMB (Ultra Mobile Broadband), or CBRS (Citizens Broadband Radio Service). .
  • the radio waves relayed by the wireless communication device of the embodiment include IEEE802.11 (Wi-Fi (registered trademark)), IEEE802.16 (WiMAX (registered trademark)), IEEE802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark) or LPWA (Low Power Wide Area).
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE802.16 WiMAX (registered trademark)
  • IEEE802.20 UWB (Ultra-Wideband)
  • Bluetooth registered trademark
  • LPWA Low Power Wide Area
  • FIG. 1 is a diagram showing an example of a building 1 in which a window 10 in which a wireless communication device 100 according to an embodiment is installed is installed.
  • the building 1 may be a detached house, a building, a condominium, etc., or a commercial facility such as a shopping mall or a department store, an airport, a factory, an electric power facility, a government building, a station (station building), or a bus stop building. .
  • Windows 10 are used in these buildings 1.
  • the window 10 includes a window glass and a window frame (window frame on the building 1 side).
  • Wireless communication device 100 has a function as a relay device.
  • the wall 1A of the building 1 acts as a shield for radio waves in the millimeter wave band, and either does not transmit the radio waves or significantly attenuates them. Radio waves in the millimeter wave band are already attenuated when they reach Building 1, and are further attenuated by the window glass.
  • the window glass of the window 10 is an entry point for electromagnetic waves in the building 1.
  • the radio waves will pass through the glass of the window 10 and go straight, so the area other than the line of sight (LOS) will become a dead zone and will not receive the radio waves. Can not.
  • LOS line of sight
  • radio waves in the millimeter wave band are emitted from outdoor base stations to create a good communication environment indoors. Since this is difficult, the wireless communication device 100 is installed in the window 10 to improve the reception environment and expand the communication area. When relaying radio waves, the wireless communication device 100 receives the radio waves through the window glass of the window 10, amplifies and radiates the radio waves. In FIG. 1, the wireless communication device 100 is placed indoors, but it may be placed outdoors.
  • the wireless communication device 100 When relaying radio waves arriving from outside the window 10, the wireless communication device 100 amplifies the received radio waves and radiates the amplified radio waves at a predetermined radiation angle using an array antenna or the like.
  • the amplified radio waves are radiated over a wide range indoors, making it easier for indoor terminals to receive the radio waves.
  • the wireless communication device 100 may receive radio waves of multiple frequencies, amplify the radio waves, and radiate the radio waves. By relaying radio waves of multiple frequencies, the amplified radio waves can be radiated to a wider indoor area.
  • 2A and 2B are diagrams showing an overview of the wireless communication device 100 and an example of how it is attached to the building 1.
  • 2A and 2B show the window 10 as seen from the indoor side of the building 1.
  • the wireless communication device 100 is installed indoors, for example.
  • the X direction and the Z direction are directions included in the horizontal plane. That is, the XZ plane is parallel to the horizontal plane.
  • the Z direction is a direction that perpendicularly passes through the wall 1A and the window 10, the Y direction is a vertical direction, and the X direction is a direction to the left and right of the window 10. Therefore, the +X direction is the right direction toward the window 10, the -X direction is the left direction toward the window 10, the +Y direction is the vertically upward direction, and the -Y direction is the vertically downward direction.
  • the +Y direction side is assumed to be the upper side
  • the -Y direction side is assumed to be the lower side.
  • FIG. 2A shows a window 10 provided in the wall 1A of the building 1.
  • the window 10 is a double-sliding window that includes a window frame 11 attached to a wall 1A perpendicular to a horizontal plane and a window glass 12.
  • a window 10 as a double-sliding window has two panes 12. In FIG. 2A, the two panes 12 are completely closed. The positions of the two window glasses 12 in this state are an example of the first position.
  • the left window glass 12 when the left window glass 12 is moved to the right end as shown in FIG. 2B, the left half of the window 10 becomes open.
  • the position of the window glass 12 in the completely opened state is an example of the second position.
  • the window glass 12 located on the left side is offset in the -Z direction side (outdoor side) with respect to the window glass 12 located on the right side. are doing.
  • the window 10 is a sliding window including a window frame 11 and a window glass 12. good. Therefore, the window 10 may be a sliding window (for example, a horizontal sliding window or a vertical sliding window), a casement window, or the like.
  • the window frame 11 is a rectangular annular (frame-shaped) member, and is attached to an opening for the window 10 provided in the wall 1A.
  • the window frame 11 has a rail 11A that guides the window glass 12 in the X direction.
  • the window frame 11 is made of, for example, metal such as aluminum, resin, wood, or the like. Below, as an example, a configuration in which the window frame 11 is made of metal will be described.
  • the window glass 12 is attached to the window frame 11 so as to be movable in the ⁇ X direction (horizontal direction).
  • the window glass 12 has a glass plate 12A and a window frame 12B.
  • the glass plate 12A is an example of a dielectric plate, and is a transparent glass plate that is rectangular in XY plane view (planar view). "Transparent” means that the visible light transmittance is at least 40% or more, preferably 60% or more, more preferably 70% or more, and still more preferably 80% or more.
  • the window frame 12B is, for example, a rectangular annular (frame-shaped) member surrounding the outer edge of the glass plate 12A, and is movable in the ⁇ X direction (horizontal direction) along the rail 11A of the window frame 11 on the building 1 side. be.
  • the window glass 12 does not need to have the window frame 12B.
  • the window glass 12 will have only the glass plate 12A.
  • the glass plate 12A is not limited to a rectangular shape when viewed from the XY plane, and may have a shape with a curved outer edge, such as a circle or an ellipse.
  • the window frame 12B may be a frame-shaped member that surrounds the glass plate 12A having such a curved outer edge.
  • the glass plate 12A may be made of a transparent dielectric material, and more specifically, it may be made of commonly available glass, such as soda lime glass, alkali-free glass, Pyrex (registered trademark) glass, quartz glass, etc. be able to. Further, the glass plate 12A is not limited to a glass plate, and may be a face material made of resin such as polycarbonate. Both surfaces of the glass plate 12A are main surfaces of the glass plate 12A, and the surface of the glass plate 12A on the indoor side (+Z direction side) is an example of the first main surface on the indoor side.
  • the window frame 12B is a frame-shaped member surrounding the edge of the glass plate 12A, and is made of metal such as aluminum, resin, wood, or the like. Below, as an example, a configuration in which the window frame 12B is made of metal will be described.
  • the wireless communication device 100 includes a movable part 100A attached to the window glass 12 and a fixed part 100B attached to the wall 1A.
  • the movable part 100A is attached, for example, to the upper right end of the indoor side (+Z direction side) surface of the glass plate 12A of the right window glass 12.
  • the fixed part 100B is located on the indoor side surface of the wall 1A (+Z direction side) so as to be located to the right of the movable part 100A. ).
  • the movable portion 100A moves to the left as shown in FIG. 2B.
  • the distance between the movable part 100A and the fixed part 100B changes.
  • the movable part 100A charges its internal battery with power supplied from the fixed part 100B by wireless power supply.
  • the charging efficiency by wireless power supply changes depending on the distance, so the movable part 100A has the highest charging efficiency when it is closest to the fixed part 100B in the X direction, and the charging efficiency decreases as it moves away from the fixed part 100B. descend.
  • the charging efficiency by wireless power supply also changes depending on the angle of the movable part 100A with respect to the fixed part 100B.
  • the ease of charging depending on the distance and angle between the movable part 100A and the fixed part 100B varies depending on the wireless power supply method, but even if the distance changes, the movable part 100A receives power from the wireless power supply part of the fixed part 100B.
  • the movable part 100A and the fixed part 100B are arranged so that the direction of the power receiving part of the movable part 100A with respect to the wireless power feeding part of the fixed part 100B remains constant even if the distance changes. Note that details of the movable portion 100A and the fixed portion 100B will be described later.
  • the movable part 100A may be attached to the indoor side (+Z direction side) surface of the glass plate 12A of the left window glass 12, for example.
  • the fixed part 100B should be attached to the indoor surface (+Z direction side) of the wall 1A so as to be located to the left of the movable part 100A with the left window glass 12 completely closed. good.
  • FIG. 3 is a diagram illustrating an example of the configuration of the wireless communication device 100.
  • FIG. 3 shows the movable part 100A and the fixed part 100B in a state where the two window glasses 12 are completely closed (see FIG. 2A).
  • the wireless communication device 100 includes an antenna element 110, a phase shifter 120, a wireless device 130, a power receiving section 140, a solar cell 150, a power supply circuit 160, a bracket 170, and a wireless power feeding section 180.
  • Antenna element 110 and phase shifter 120 construct antenna 105.
  • the antenna element 110, phase shifter 120, wireless device 130, power receiving unit 140, solar cell 150, and power supply circuit 160 are arranged inside a transparent resin case 101A of the movable unit 100A, and are arranged inside a transparent resin case 101A of the movable unit 100A. It is glued to the inside (+Z direction side) surface. That is, the antenna element 110, the phase shifter 120, the wireless device 130, the power receiving unit 140, the solar cell 150, and the power circuit 160 are arranged on the window glass 12.
  • a transparent resin case 101A of the movable part 100A is adhered to the indoor surface of the glass plate 12A with transparent double-sided tape or the like. That is, the antenna element 110 is placed on the indoor side with respect to the glass plate 12A.
  • the case 101A is, for example, a thin plate-like case with a thin thickness in the Z direction, and includes an antenna element 110, a phase shifter 120, a wireless device 130, a power receiving unit 140, a solar cell 150, and a power supply circuit 160 inside. It is located.
  • power receiving section 140 is arranged on the left side in case 101A so as to be close to wireless power feeding section 180 of fixed section 100B.
  • transparent means that the visible light transmittance is at least 40% or more, preferably 60% or more, more preferably 70% or more, and still more preferably 80% or more.
  • acrylic resins such as polymethyl methacrylate, cycloolefin resins, polycarbonate resins, polyethylene terephthalate (PET), etc. can be used.
  • the case 101A may be a glass plate. Note that the meaning of "transparent” also applies to the double-sided tape or the like that adheres the case 101A to the indoor surface of the glass plate 12A.
  • the antenna element 110 when attaching the wireless communication device 100 to the window 10, it is preferable to provide the antenna element 110 in a portion overlapping with the glass plate 12A in order for the antenna element 110 to efficiently receive the radio waves that pass through the glass plate 12A.
  • the phase shifter 120, the wireless device 130, the power receiving unit 140, and the power supply circuit 160 are not transparent and do not need to be provided in a portion that overlaps with the glass plate 12A. good.
  • the wireless power supply section 180 is arranged inside a resin case 101B of the fixed section 100B, and the case 101B is fixed to the wall 1A with a bracket 170. That is, the wireless power supply unit 180 is placed indoors in the building 1 on the wall 1A (structure) around the window glass 12.
  • the wall 1A around the window glass 12 is an example of a structure around the window glass 12.
  • the bracket 170 may be attached to both ends of the resin case 101B in the X direction with screws, and may be attached to the wall 1A with double-sided tape, screws, or the like.
  • the wireless communication device 100 when attaching the wireless communication device 100 to the window 10, it is easier to protect it from wind, rain, dust, etc. by placing it on the indoor side of the building 1 (see FIG. 1), and it can operate stably over a long period of time. Therefore, the wireless communication device 100 is placed indoors.
  • FIG. 4 is a diagram showing an example of a circuit configuration of the wireless communication device 100. Here, the configuration of each part of the wireless communication device 100 will be explained using FIG. 4 in addition to FIG. 3.
  • the antenna element 110 is connected to a wireless device 130 via a phase shifter 120. Details of the antenna element 110, phase shifter 120, and wireless device 130 will be described later, and the power receiving unit 140, solar cell 150, power supply circuit 160, and wireless power supply unit 180 will be described first.
  • the wireless power supply unit 180 includes a power transmission coil 181, a capacitor 182, and an AC power source 183. One end of the power transmission coil 181 is connected to one of two terminals of the AC power supply 183 via a capacitor 182, and the other end of the power transmission coil 181 is connected to the other of the two terminals of the AC power supply 183.
  • the wireless power supply unit 180 realizes wireless power supply by wirelessly transmitting AC power of a predetermined frequency output from the AC power supply 183 from the power transmission coil 181.
  • the power supply circuit 160 has a battery 161.
  • Battery 161 is an example of a power storage unit.
  • the battery 161 is a secondary battery that can be charged repeatedly, and is, for example, a lithium ion battery.
  • the power supply circuit 160 charges the battery 161 with the power received by the power receiving unit 140 or the power generated by the solar cell 150, and manages the charging state of the battery 161.
  • Power supply circuit 160 supplies power to phase shifter 120 and wireless device 130 through a power supply line indicated by a broken line.
  • the wireless communication device 100 Power is supplied from battery 161 to phase shifter 120 and wireless device 130 .
  • the wireless communication device 100 may have a configuration that does not include the power supply circuit 160.
  • the power received by the power receiving unit 140 from the wireless power supply unit 180 may be directly supplied to the phase shifter 120 and the wireless device 130.
  • the solar cell 150 is connected to a power supply circuit 160.
  • the solar cell 150 is arranged in the case 101A of the movable part 100A (see FIG. 3), facing the outdoor side (-Z direction side).
  • the power supply circuit 160 can be charged even in a state where the power receiving section 140 and the wireless power feeding section 180 are separated and the charging efficiency is low.
  • the wireless communication device 100 may have a configuration that does not include the solar cell 150. In this case, the power received by the power receiving unit 140 and stored in the power supply circuit 160 may be supplied to the phase shifter 120 and the wireless device 130.
  • the power receiving unit 140 includes a power receiving coil 141 and a resistor 142 that are connected in parallel to each other, and a power supply circuit 160 is connected between both ends of the power receiving coil 141 and the resistor 142.
  • the power receiving coil 141 of the power receiving unit 140 receives power wirelessly transmitted from the power transmitting coil 181 of the wireless power feeding unit 180.
  • power transmission from the power transmission coil 181 of the wireless power supply unit 180 to the power reception coil 141 of the power reception unit 140 may be performed using an electromagnetic induction method or a magnetic resonance method, for example.
  • electromagnetic induction coils may be used as the power transmitting coil 181 and the power receiving coil 141.
  • resonance coils for magnetic field resonance may be used as the power transmitting coil 181 and the power receiving coil 141.
  • the electromagnetic induction method has the advantage of having a simple circuit configuration, being compact and low-cost, and having high power reception efficiency. Short and susceptible to misalignment.
  • the magnetic field resonance method transmits power by generating magnetic field resonance between the power transmitting coil 181 and the power receiving coil 141, and therefore has the advantage that power can be transmitted over a long distance.
  • an electric field coupling method or a radio wave reception method can also be used, which will be described later using FIGS. 5A and 5B.
  • the wireless device 130 includes a wireless module 131, a switch 132, an LNA (Low Noise Amplifier) 133, a mixer 134, an ADC (Analog to Digital Converter) 135, a DAC (Digital to Analog Converter) 136, a mixer 137, and a PA (Power Amplifier). It has 138.
  • LNA Low Noise Amplifier
  • ADC Analog to Digital Converter
  • DAC Digital to Analog Converter
  • PA Power Amplifier
  • the wireless module 131 is configured by, for example, an MCU (Micro Controller Unit), and includes a control section 131A and a relay section 131B that performs relay processing.
  • the control unit 131A and the relay unit 131B are functional blocks representing functions executed by the MCU.
  • the control unit 131A When receiving radio waves with the antenna element 110, the control unit 131A switches the three-terminal switch 132 to connect the antenna element 110 and the LNA 133. Furthermore, when transmitting radio waves using the antenna element 110, the control unit 131A switches the three-terminal switch 132 to connect the antenna element 110 and the PA 138.
  • control unit 131A controls the amount of phase change given to the radio waves by the phase shifter 120 when receiving radio waves with the antenna element 110 and when transmitting radio waves with the antenna element 110, and controls the direction of the beam. do.
  • the relay unit 131B includes, for example, a Bluetooth (registered trademark) communication unit, and transmits the digital signal input from the ADC 135.
  • the relay unit 131B transmits a signal
  • the radio waves received by the antenna element 110 from the base station are relayed, and the radio waves are radiated into the inside of the building 1 where the wireless communication device 100 is placed.
  • the radio waves are radiated over a wide range indoors in the building 1, making it easier for terminals such as smartphones to receive the radio waves indoors.
  • the communication unit that emits the radio waves that the relay unit 131B relays to the indoor side is not limited to Bluetooth, and may be WiFi or the like.
  • the LNA 133 is provided between the switch 132 and the mixer 134, amplifies the radio wave received by the antenna element 110, and outputs it while preventing the signal-to-noise ratio from deteriorating.
  • the mixer 134 mixes the radio wave output from the LNA 133 with a local signal (Lo), demodulates it, and outputs an IF (Intermediate Frequency) signal.
  • a local signal Li
  • IF Intermediate Frequency
  • the ADC 135 digitally converts the IF signal output from the mixer 134 and outputs it to the wireless module 131.
  • the DAC 136 converts the signal output from the wireless module 131 into analog and outputs an IF signal to the mixer 137.
  • the mixer 137 mixes the IF signal with the local signal (Lo), modulates it, and outputs it to the PA 138.
  • the PA 138 amplifies the signal output from the mixer 137 and outputs it to the antenna element 110 via the switch 132.
  • the phase shifter 120 is a set of multiple phase shifters connected to each antenna element of the antenna element 110, which is a set of multiple antenna elements.
  • the amount of phase change that the phase shifter 120 gives to the radio waves is controlled by the control unit 131A.
  • the phase shifter 120 can be made of LC (Liquid Crystal), for example.
  • the antenna element 110 is a collection of multiple antenna elements and constitutes an array antenna.
  • the antenna element faces outdoors (-Z direction side) and receives radio waves radiated from an outdoor base station.
  • the antenna element 110 is formed on the surface of the substrate on the -Z direction side.
  • the substrate is preferably transparent like the case 101A.
  • Antenna element 110 is formed of a conductor. Since the antenna element 110 is placed overlapping the window 10, it is made of transparent conductive films such as zinc oxide (ZnO), tin oxide (SnO 2 ), tin-doped indium oxide (ITO), indium oxide/tin oxide (IZO), titanium nitride, etc. It is preferable to use a metal nitride such as (TiN) or chromium nitride (CrN), or a low-e film for low-e (low emissivity) glass. However, the antenna element 110 may also be formed of a metal thin film such as copper, nickel, or gold. In the case of a metal thin film, it is preferable to form it into a mesh shape from the viewpoint of visibility.
  • a metal thin film it is preferable to form it into a mesh shape from the viewpoint of visibility.
  • the antenna element 110 has a plurality of antenna elements arranged two-dimensionally in an XY plane view in order to perform beam forming.
  • a phase shifter 120 that adjusts the phase of radio waves is connected to each antenna element.
  • a matching layer may be provided on the -Z direction side of the antenna element 110.
  • the matching layer is provided to adjust the electrical length of radio waves incident on the antenna element 110 and match the impedance.
  • the matching layer can be made of polycarbonate, acrylic, COP (cycloolefin polymer), PET (polyethylene terephthalate), polystyrene, glass, or the like.
  • the wireless communication device 100 includes the antenna 105, the relay section 131B, the control section 131A, the power receiving section 140, and the wireless power feeding section 180.
  • the antenna 105 has an antenna element 110 and a phase shifter 120 connected to the antenna element 110, and is arranged to overlap the glass plate 12A of the window glass 12 having the glass plate 12A. receive radio waves.
  • the relay unit 131B is arranged on the window glass 12 and relays the radio waves received by the antenna 105.
  • the control unit 131A is disposed on the window glass 12 and controls the amount of phase change of the radio waves arriving from the outside of the window glass 12 in the phase shifter 120.
  • the power receiving unit 140 is disposed on the window glass 12 and supplies the received power to the phase shifter 120, the relay unit 131B, and the control unit 131A.
  • the wireless power supply unit 180 is disposed in a structure around the window glass 12, and wirelessly supplies power to the power reception unit 140. Therefore, even if the window glass 12 moves relative to the structures around the window glass 12, power can be wirelessly transmitted from the wireless power supply unit 180 to the power reception unit 140.
  • a wireless communication device 100 that can be attached to the openable/closable window glass 12 and can relay radio waves.
  • the window glass 12 is movable in a direction included in the main surface of the glass plate 12A, and even if the distance between the wireless power supply section 180 and the power reception section 140 changes due to the movement of the window glass 12,
  • the orientation of power receiving unit 140 with respect to wireless power feeding unit 180 is constant. Therefore, even if the distance between the wireless power supply unit 180 and the power receiving unit 140 becomes long, the decrease in charging efficiency can be minimized, and the wireless communication device 100 can efficiently receive power from the wireless power supply unit 180. can be provided.
  • the window glass 12 is movable between the first position and the second position, and the power receiving unit 140 is closest to the wireless power supply unit 180 when the window glass 12 is in the first position. Therefore, it can be attached to the window glass 12 that can be opened and closed, and when the window glass 12 is in the first position, the wireless power supply unit 180 can most efficiently receive the power that is supplied wirelessly, and can relay radio waves.
  • a wireless communication device 100 can be provided.
  • the wireless communication device 100 also includes a battery 161 that is disposed on the window glass 12, stores power received by the power receiving section 140, and supplies the stored power to the phase shifter 120, the relay section 131B, and the control section 131A. . Therefore, it is possible to provide the wireless communication device 100 that can relay radio waves even when the window glass 12 moves and power is not wirelessly supplied from the wireless power supply unit 180. In this case, for example, when the power receiving unit 140 and the wireless power feeding unit 180 are separated by a predetermined distance or more, the setting may be such that power is supplied from the battery 161.
  • the power reception unit 140 and the wireless power supply unit 180 are separated by a predetermined distance or more, power is supplied from the battery 161 to the phase shifter 120, the relay unit 131B, and the control unit 131A. Therefore, even if the power receiving unit 140 cannot receive power from the wireless power supply unit 180, the phase shifter 120, the relay unit 131B, and the control unit 131A can be driven by the power of the battery 161, and radio waves can be relayed. It is.
  • the wireless communication device 100 also includes a solar cell 150 that generates power to be supplied to the phase shifter 120, the relay section 131B, and the control section 131A, and is disposed on the window glass 12. Therefore, electric power can be generated using the light incident through the window glass 12, and even in a state where electric power is not wirelessly supplied from the wireless power supply unit 180, radio waves can be relayed using the electric power generated by the solar cell 150. It is possible to provide a wireless communication device 100 that is possible.
  • phase shifter 120 since the phase shifter 120 is made of liquid crystal, it can reliably change the phase of the radio waves received or transmitted by the antenna element 110 with relatively little power consumption, and the phase shifter 120 can reliably change the phase of the radio waves received or transmitted by the antenna element 110. Efficiency can be improved.
  • the antenna element 110 can be protected from outdoor wind, rain, dust, etc., and can be stably operated over a long period of time.
  • the antenna element 110 may be fixed to the glass plate 12A or the window frame 12B with a space provided between the antenna element 110 and the indoor surface of the glass plate 12A. Also in this case, the antenna element 110 will be placed on the indoor side with respect to the glass plate 12A.
  • FIG. 5A is a diagram illustrating an example of a circuit configuration of a wireless communication device 100 according to a first modification of the embodiment.
  • the wireless communication device 100 of the first modification differs from the power receiving unit 140 and the wireless power feeding unit 180 shown in FIG. 4 in that the power receiving unit 140 and the wireless power feeding unit 180 are of an electric field coupling type. Other components are the same.
  • the power receiving unit 140 of the first modification has two capacitor electrodes 141A, and a resistor 142 is connected between the two electrodes 141A.
  • Power supply circuit 160 is connected between two electrodes (between both ends of resistor 142).
  • the wireless power supply unit 180 of the first modification has two capacitor electrodes 181A, one electrode 181A is connected to an AC power source 183 via a coil 182A, and the other electrode 181A is connected to an AC power source 183. 183 directly connected.
  • the two electrodes 141A of the power receiving section 140 and the two electrodes 181A of the wireless power feeding section 180 are arranged facing each other as shown in FIG. 5A, and constitute two capacitors. Since the power receiving section 140 and the wireless power feeding section 180 are electrically coupled by the two capacitors constituted by the two electrodes 141A and the two electrodes 181A, a high frequency current is caused to flow through the wireless power feeding section 180. Since current flows to the power receiving unit 140 side, power can be transmitted wirelessly.
  • the electric field coupling method has the advantage that it is less susceptible to the misalignment between the electrode 141A and the electrode 181A, and that the wireless power supply unit 180 generates less heat.
  • the wireless communication device 100 of the first modification that can be attached to the openable/closable window glass 12 and can relay radio waves.
  • FIG. 5B is a diagram illustrating an example of a circuit configuration of a wireless communication device 100 according to a second modification of the embodiment.
  • the wireless communication device 100 of the second modification differs from the power receiving unit 140 and the wireless power feeding unit 180 shown in FIG. 4 in that the power receiving unit 140 and the wireless power feeding unit 180 are of a radio wave reception type. Other components are the same.
  • the power receiving unit 140 of the second modification has an antenna 141B, and the antenna 141B is connected to the power supply circuit 160 via a rectifier circuit (not shown) that converts AC power to DC power. ing.
  • the wireless power supply unit 180 of the second modification includes an antenna 181B, an amplifier 182B1, and an AC power supply 183.
  • Antenna 181B, amplifier 182B1, and AC power supply 183 are connected in series, and 24 GHz AC power output from AC power supply 183 is amplified by amplifier 182B1 and output from antenna 181B.
  • Power receiving unit 140 receives a signal through antenna 141B, and the power of the received signal is stored in battery 161 of power supply circuit 160.
  • the radio wave reception method has the advantage of long transmission distance.
  • the wireless communication device 100 of the second modification which can be attached to the openable/closable window glass 12 and can relay radio waves.
  • FIG. 5C is a diagram illustrating an example of a circuit configuration of a wireless communication device 100M according to a third modification of the embodiment.
  • the wireless communication device 100M of the third modification has a configuration in which the wireless device 130 of the wireless communication device 100 shown in FIG. 4 is moved to the fixed part 100B side.
  • the wireless communication device 100M of the third modification includes a movable section 100MA and a fixed section 100MB.
  • the movable part 100MA is attached to the glass plate 12A of the window glass 12, similar to the movable part 100A shown in FIG.
  • Movable unit 100MA includes antenna element 110A, antenna 110B, phase shifter 120, switch 132A, switch 132B, LNA 133A, PA 138A, wireless power receiving unit 140M, solar cell 150, and power supply circuit 160A.
  • the power supply circuit 160A of the movable unit 100MA includes a control unit 162 and a communication unit 163 in addition to a battery 161.
  • Antenna 105 including antenna element 110A and phase shifter 120 is an example of a first antenna.
  • Antenna element 110A is an array antenna corresponding to antenna element 110 shown in FIG. 4.
  • Antenna 110B is an example of a second antenna.
  • antenna 110B is connected to the output side of LNA 133A and the input side of PA 138A via switch 132B.
  • the communication unit 163 is connected to the control unit 162 and can perform wireless communication with the communication unit 131C of the wireless module 131 of the fixed unit 100MB.
  • the communication unit 163 is simply shown as an antenna symbol, but the communication unit 163 only needs to be able to perform wireless communication, and may be infrared communication, wireless communication using light such as an LED (Light Emitting Diode), or , a communication unit that performs communication using Bluetooth (registered trademark), WLAN (Wireless Local Area Network), or the like.
  • the wireless power receiving unit 140M is connected to the power supply circuit 160A.
  • Power supply circuit 160A supplies power to phase shifter 120, LNA 133A, and PA 138A through a power supply line indicated by a broken line. Further, the solar cell 150 supplies power to the power supply circuit 160A through a power supply line indicated by a broken line.
  • the control unit 162 controls the phase shifter 120 and the switches 132A and 132B based on a control command that the communication unit 163 receives from the communication unit 131C.
  • the fixed unit 100MB includes an antenna 110C, a wireless device 130M, a power supply circuit 160B, a wireless power supply unit 180M, and an AC power supply 183.
  • Antenna 110C is an example of a third antenna.
  • the wireless device 130M like the wireless device 130 shown in FIG. 4, includes a wireless module 131, a switch 132C, a communication section 131C, an LNA 133, a mixer 134, an ADC 135, a DAC 136, a mixer 137, and a PA 138.
  • the connection relationship between the antenna 110C, the wireless device 130M, and the power supply circuit 160B in the fixed part 100MB is the same as the connection relationship between the antenna element 110, the wireless device 130, and the power supply circuit 160 shown in FIG.
  • the communication unit 131C only needs to be capable of wireless communication with the communication unit 163, and similarly to the communication unit 163, it may be capable of infrared communication, wireless communication using light such as an LED, or Bluetooth (registered trademark) or WLAN.
  • the communication unit 131C is simplified and shown as an antenna symbol.
  • the control unit 131A of the wireless module 131 transmits a control command to the control unit 162 of the power supply circuit 160A via the communication unit 131C.
  • the control command is received by the communication unit 163, and the control unit 162 controls the phase shifter 120 and the switches 132A and 132B based on the control command.
  • a wireless power supply unit 180M and an AC power supply 183 are connected to the power supply circuit 160B.
  • the power supply circuit 160B supplies power to the wireless module 131, LNA 133, ADC 135, DAC 136, and PA 138 of the wireless device 130M.
  • the wireless power reception unit 140M and the wireless power supply unit 180M may use any of the electromagnetic induction method or magnetic resonance method shown in FIG. 4, the electric field coupling method shown in FIG. 5A, or the radio wave reception method shown in FIG. 5B.
  • the wireless power reception unit 140M receives power wirelessly transmitted by the wireless power supply unit 180M.
  • the antenna element 110A when the antenna element 110A receives a radio wave, the received radio wave is transmitted from the antenna 110B via the switch 132A, the LNA 133A, and the switch 132B.
  • Antenna 110C receives the radio waves transmitted from antenna 110B, and inputs the radio waves to radio module 131 via LNA 133, mixer 134, and ADC 135 of radio device 130M.
  • the radio waves input to the wireless module 131 are relayed by the relay section 131B and radiated indoors of the building 1.
  • the relay unit 131B of the wireless module 131 receives radio waves from a terminal located indoors in the building 1, the radio waves are transmitted from the antenna 110C via the DAC 136, mixer 137, PA 138, and switch 132C.
  • Antenna 110B receives the radio waves transmitted from antenna 110C, and the received radio waves are transmitted from antenna element 110A to the base station via switch 132B, PA 138A, and switch 132A.
  • the wireless communication device 100M of the third modification includes the antenna 105, the antenna 110B, the wireless power receiving section 140M, the antenna 110C, the control section 131A, the relay section 131B, and the wireless power feeding section 180M.
  • the antenna 105 has an antenna element 110A and a phase shifter 120 connected to the antenna element 110A, and is arranged to overlap the glass plate 12A of the window glass 12 having the glass plate 12A. receive radio waves.
  • Antenna 110B is placed on window glass 12 and transmits radio waves received by antenna element 110A.
  • the wireless power receiving unit 140M is disposed on the window glass 12 and supplies the received power to the phase shifter 120.
  • Antenna 110C is placed on a structure around window glass 12, and receives radio waves transmitted by antenna 110B.
  • the relay unit 131B is arranged in a structure around the window glass 12, and relays the radio waves received by the antenna 110C.
  • the control unit 131A is arranged on the window glass 12 or a structure around the window glass 12, and controls the amount of phase change of the radio waves arriving from the outside of the window glass 12 in the phase shifter 120.
  • the wireless power supply unit 180M is arranged in a structure around the window glass 12, and wirelessly supplies power to the wireless power reception unit 140M.
  • the wireless communication device 100M Power is supplied from the phase shifter 120, LNA 133A, and PA 138A. Therefore, even if wireless power reception unit 140M cannot receive power from wireless power supply unit 180M, phase shifter 120, LNA 133A, and PA 138A can be driven with the power of battery 161, and radio waves can be relayed.
  • the fixed unit 100MB including the antenna 110C and the relay unit 131B 110C may receive radio waves from the base station, relay them, and radiate the radio waves inside the building 1. Even if the antennas 110B and 110C are unable to communicate, the antenna 110C receives and relays radio waves arriving from the base station (an example of radio waves arriving from the outside of the window glass 12), and the radio waves can be radiated into the inside of the building 1.
  • FIG. 6A is a diagram showing a window 10M1 of a fourth modification of the embodiment.
  • the window 10M1 is a double-hung window, and the two window glasses 12 are pivotally supported at the left and right ends, and are configured to open outward.
  • the movable part 100A When attaching the wireless communication device 100 to such a window 10M1, as an example, as shown in FIG. 6A, the movable part 100A is attached to the left end of the indoor surface of the glass plate 12A of the left window glass 12,
  • the fixed part 100B may be attached to the indoor surface of the wall 1A so as to be located to the left of the movable part 100A when the window glass 12 is closed. Note that in FIG. 6A, only the power receiving section 140 is shown for the movable section 100A, and only the wireless power feeding section 180 is shown for the fixed section 100B.
  • the wireless power supply section 180 (see FIG. 3) of the fixed section 100B and the power receiving section of the movable section 100A are connected.
  • the distance between the power receiving unit 140 (see FIG. 3) and the power receiving unit 140 (see FIG. 3) does not change significantly, the orientation of the power receiving unit 140 with respect to the wireless power feeding unit 180 changes.
  • the range of charging angles differs depending on the wireless power supply method. For this reason, power may be transmitted using an electric field coupling method, a radio wave reception method, or a magnetic field resonance method, which are relatively resistant to angular changes.
  • the movable part 100A is attached to the right end of the indoor surface of the glass plate 12A of the right window glass 12, and the fixed part 100B is attached so that it is located to the right of the movable part 100A when the window glass 12 is closed.
  • the window 10M1 may be a single-hinged window with one windowpane 12.
  • the window 10M1 may have two window glasses 12, and only one of them may be a casement window that can be opened and closed.
  • FIG. 6B is a diagram showing a window 10M2 of a fifth modification of the embodiment.
  • the window 10M2 is a casement window, and one window glass 12 is pivotally supported on the upper end side, and the lower part is configured to open outward.
  • FIG. 6B is a diagram showing the window 10M2 from the outdoor side of the building 1.
  • the movable part 100A When attaching the wireless communication device 100 to such a window 10M2, as an example, as shown in FIG. 6B, the movable part 100A is attached to the upper end of the indoor surface of the glass plate 12A of the window glass 12, The fixed part 100B may be attached to the indoor surface of the wall 1A so as to be located above the movable part 100A when the fixed part 100B is closed. Note that in FIG. 6B, only the power receiving section 140 is shown for the movable section 100A, and only the wireless power feeding section 180 is shown for the fixed section 100B.
  • the wireless power supply section 180 (see FIG. 3) of the fixed section 100B and the power receiving section 140 (see FIG. 3) of the movable section 100A are connected.
  • the distance between the wireless power supply unit 180 and the wireless power supply unit 180 does not change significantly, the orientation of the power reception unit 140 with respect to the wireless power supply unit 180 changes.
  • the range of charging angles differs depending on the wireless power supply method. For this reason, power may be transmitted using an electric field coupling method, a radio wave reception method, or a magnetic field resonance method, which are relatively resistant to angular changes.
  • the main surface of the window glass 12 when the window glass 12 is completely closed is set so that the amount of change in the orientation of the power receiving unit 140 with respect to the wireless power supply unit 180 when the window glass 12 is opened is reduced.
  • the positions of the wireless power feeding unit 180 and the power receiving unit 140 in the normal direction may be shifted from each other.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

L'invention concerne un dispositif de communication sans fil qui est capable de relayer des ondes radio et peut être fixé à une vitre en verre qui peut être ouvert et fermé.　Le dispositif de communication sans fil comprend : une antenne qui a un élément d'antenne et un déphaseur connecté à l'élément d'antenne, et est disposée de façon à chevaucher une plaque diélectrique de vitre en verre ayant la plaque diélectrique ; une partie relais qui est disposée sur la vitre en verre et relaie des ondes radio reçues par l'antenne ; une unité de commande qui est disposée sur la vitre en verre et commande une quantité de changement de phase des ondes radio dans le déphaseur ; une unité de réception d'énergie qui est disposée sur la vitre en verre et fournit de l'énergie reçue au déphaseur, à la partie relais et à l'unité de commande ; et une unité d'alimentation en énergie sans fil qui est agencée sur une structure entourant la vitre en verre et fournit de manière sans fil de l'énergie à l'unité de réception d'énergie.
PCT/JP2023/027573 2022-08-10 2023-07-27 Dispositif de communication sans fil WO2024034421A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-127700 2022-08-10
JP2022127700 2022-08-10

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WO2024034421A1 true WO2024034421A1 (fr) 2024-02-15

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11103201A (ja) * 1997-09-29 1999-04-13 Mitsui Chem Inc 移相器、移相器アレイおよびフェーズドアレイアンテナ装置
JP2010245751A (ja) * 2009-04-03 2010-10-28 Hitachi Kokusai Electric Inc デジタル無線通信システム
JP2013017336A (ja) * 2011-07-05 2013-01-24 Sony Corp 検知装置、受電装置、非接触電力伝送システム及び検知方法
JP2014150636A (ja) * 2013-01-31 2014-08-21 Canon Inc 給電装置、画像形成装置、給電システム、給電方法及びプログラム
JP2015209737A (ja) * 2014-04-30 2015-11-24 トヨタホーム株式会社 施解錠通知システム
JP2019530387A (ja) * 2016-09-22 2019-10-17 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． ビーム・ステアリング・アンテナのための液晶調整可能メタサーフェス
JP2020028015A (ja) * 2018-08-10 2020-02-20 ソフトバンク株式会社 通信装置、プログラム及び通信システム
JP2021517406A (ja) * 2018-03-19 2021-07-15 ピヴォタル コムウェア インコーポレイテッド 物理的障壁を通じた無線信号の通信

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11103201A (ja) * 1997-09-29 1999-04-13 Mitsui Chem Inc 移相器、移相器アレイおよびフェーズドアレイアンテナ装置
JP2010245751A (ja) * 2009-04-03 2010-10-28 Hitachi Kokusai Electric Inc デジタル無線通信システム
JP2013017336A (ja) * 2011-07-05 2013-01-24 Sony Corp 検知装置、受電装置、非接触電力伝送システム及び検知方法
JP2014150636A (ja) * 2013-01-31 2014-08-21 Canon Inc 給電装置、画像形成装置、給電システム、給電方法及びプログラム
JP2015209737A (ja) * 2014-04-30 2015-11-24 トヨタホーム株式会社 施解錠通知システム
JP2019530387A (ja) * 2016-09-22 2019-10-17 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． ビーム・ステアリング・アンテナのための液晶調整可能メタサーフェス
JP2021517406A (ja) * 2018-03-19 2021-07-15 ピヴォタル コムウェア インコーポレイテッド 物理的障壁を通じた無線信号の通信
JP2020028015A (ja) * 2018-08-10 2020-02-20 ソフトバンク株式会社 通信装置、プログラム及び通信システム

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