WO2021149143A1 - Dispositif d'antenne à réflecteur et dispositif de communication - Google Patents

Dispositif d'antenne à réflecteur et dispositif de communication Download PDF

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Publication number
WO2021149143A1
WO2021149143A1 PCT/JP2020/001905 JP2020001905W WO2021149143A1 WO 2021149143 A1 WO2021149143 A1 WO 2021149143A1 JP 2020001905 W JP2020001905 W JP 2020001905W WO 2021149143 A1 WO2021149143 A1 WO 2021149143A1
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WIPO (PCT)
Prior art keywords
substrate
antenna device
reflecting surface
reflector antenna
reflector
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PCT/JP2020/001905
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English (en)
Japanese (ja)
Inventor
宏昌 中嶋
山本　伸一
道生 瀧川
修次 縫村
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三菱電機株式会社
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Priority to PCT/JP2020/001905 priority Critical patent/WO2021149143A1/fr
Priority to JP2021560841A priority patent/JP6995260B2/ja
Publication of WO2021149143A1 publication Critical patent/WO2021149143A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
    • H01Q15/20—Collapsible reflectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/01—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system

Definitions

  • the present disclosure relates to a reflector antenna device including a primary radiator and a communication device including a reflector antenna device.
  • the following Patent Document 1 discloses a reflect array antenna.
  • the reflect array antenna includes a dielectric substrate, a plurality of conductor patches formed on the dielectric substrate, and a primary radiation antenna.
  • the dielectric substrate on which a plurality of conductor patches are formed is a flat plate-shaped substrate. Therefore, the path length of the radio wave when the radio wave radiated from the primary radiation antenna is reflected near the center of the dielectric substrate (hereinafter referred to as the first path length) and the vicinity of the end portion of the dielectric substrate The path length of the radio wave when it is reflected (hereinafter referred to as the second path length) is different.
  • the phase of the radio wave reflected near the center of the dielectric substrate and the phase of the radio wave reflected near the edge of the dielectric substrate are different. Therefore, if the conductor is simply uniformly applied to the radio wave reflecting surface of the dielectric substrate, the radiation direction of the radio wave reflected near the center of the dielectric substrate and the edge of the dielectric substrate The radiation direction of the radio waves reflected in the vicinity is different.
  • a plurality of conductor patches are formed instead of uniformly applying conductors to the reflecting surface of radio waves on the dielectric substrate.
  • each conductor patch is used in order to align the radiation direction of the radio wave reflected near the center of the dielectric substrate and the radiation direction of the radio wave reflected near the edge of the dielectric substrate. The size etc. have been adjusted.
  • the first path length and the second path length are different. Therefore, when the frequency of the radio wave radiated from the primary radiation antenna is switched after the size of the conductor patch is adjusted, the radiation direction of the radio wave reflected near the center of the dielectric substrate and the radiation direction of the dielectric substrate The radiation direction of the radio waves reflected near the end will not be aligned. That is, in the reflect array antenna, if the frequency of the radio wave radiated from the primary radiation antenna is switched after the size of the conductor patch is adjusted, there is a problem that the radiation direction of the radio wave varies. ..
  • the present disclosure has been made in order to solve the above-mentioned problems, and it is possible to suppress variations in the radiation direction of radio waves as compared with a reflect array antenna having only one flat plate-shaped dielectric substrate as a reflector.
  • the purpose is to obtain a capable reflector antenna device.
  • the reflector antenna device includes a primary radiator that emits radio waves, a first substrate on which a plurality of conductor patches are arranged on a reflecting surface that reflects radio waves emitted from the primary radiator, and a first substrate.
  • a second substrate on which a plurality of conductor patches are arranged is provided on a reflecting surface which is arranged around the first substrate and reflects radio waves radiated from a primary radiator, and a reflecting surface in the first substrate.
  • the angle formed by the normal vector of the above and the normal vector of the reflecting surface on the second substrate is larger than 0 degrees and smaller than 90 degrees.
  • the angle between the normal vector of the reflective surface on the first substrate and the normal vector of the reflective surface on the second substrate is larger than 0 degrees and smaller than 90 degrees.
  • a reflector antenna device was constructed. Therefore, the reflector antenna device according to the present disclosure can suppress variations in the radiation direction of radio waves as compared with a reflect array antenna having only one flat plate-shaped dielectric substrate as a reflector.
  • FIG. It is a perspective view which shows the reflector antenna device 3 which concerns on Embodiment 1.
  • FIG. It is a top view which shows the reflection surface 12a of the 1st substrate 12 in the reflector antenna device 3 which concerns on Embodiment 1.
  • FIG. It is a side view which shows the 1st substrate 12 in the reflector antenna device 3 which concerns on Embodiment 1.
  • FIG. It is a side view which shows the 2nd substrate 13 in the reflector antenna device 3 which concerns on Embodiment 1.
  • FIG. It is a side view which shows the 2nd substrate 13 in the reflector antenna device 3 which concerns on Embodiment 1.
  • FIG. It is a side view which shows the 2nd substrate 13 in the reflector antenna device 3 which concerns on
  • FIG. 7A is an explanatory diagram showing a state in which the second substrate 13 is superposed on the first substrate 12
  • FIG. 7B is an explanatory diagram showing a state in which the second substrate 13 is in the process of being opened
  • FIG. 7C is an explanatory diagram.
  • FIG. 10A is an explanatory view showing circular conductor patches 21 and 23
  • FIG. 10B is an explanatory view showing rectangular frame-shaped conductor patches 21 and 23
  • FIG. 10C is an explanatory view showing ring-shaped conductor patches 21 and 23
  • FIG. 10D is an explanatory view showing conductor patches 21 and 23 having a + shape. It is a perspective view which shows the reflector antenna device 3 which concerns on Embodiment 2.
  • FIG. 12A, 12B, and 12C are explanatory views showing a state in which the angle ⁇ between the reflecting surface 12a and the reflecting surface 13a is switched by the movable mechanism 30. It is explanatory drawing which shows the simulation result of the radiation characteristic of the reflector antenna device 3. It is a side view which shows the reflector antenna device 3 which concerns on Embodiment 3. FIG. It is explanatory drawing which shows the normal vector v 12 of the reflection surface 12a, the normal vector v 13 of the reflection surface 13a, the reflection direction of the radio wave by the reflection surface 12a, and the reflection direction of the radio wave by the reflection surface 13a. It is a side view which shows the reflector antenna device 3 which concerns on Embodiment 4. FIG.
  • FIG. 1 is a configuration diagram showing a communication device including the reflector antenna device 3 according to the first embodiment.
  • the signal transmission unit 1 outputs a transmission signal to the reflector antenna device 3.
  • the signal receiving unit 2 receives the received signal output from the reflector antenna device 3.
  • the reflector antenna device 3 radiates radio waves related to the transmission signal output from the signal transmission unit 1 into the air. Further, the reflector antenna device 3 receives a radio wave and outputs a received signal related to the received radio wave to the signal receiving unit 2.
  • FIG. 2 is a perspective view showing the reflector antenna device 3 according to the first embodiment.
  • FIG. 3 is a plan view showing a reflecting surface 12a of the first substrate 12 in the reflecting mirror antenna device 3 according to the first embodiment.
  • FIG. 4 is a side view showing the first substrate 12 in the reflector antenna device 3 according to the first embodiment.
  • FIG. 5 is a plan view showing a reflecting surface 13a of the second substrate 13 in the reflecting mirror antenna device 3 according to the first embodiment.
  • FIG. 6 is a side view showing the second substrate 13 in the reflector antenna device 3 according to the first embodiment.
  • FIG. 7 is an explanatory view showing a development example of the first substrate 12 and the second substrate 13 in the reflector antenna device 3 according to the first embodiment.
  • FIG. 7A shows a state in which the second substrate 13 is superposed on the first substrate 12, and
  • FIG. 7B shows a state in which the second substrate 13 is in the process of being opened.
  • FIG. 7C shows a state in which the second substrate 13 has been completely
  • the primary radiator 11 is realized by a backfire antenna.
  • the primary radiator 11 radiates radio waves related to the transmission signal output from the signal transmission unit 1 toward the reflection surface 12a of the first substrate 12 and the reflection surface 13a of the second substrate 13, respectively.
  • the first substrate 12 is realized by, for example, a dielectric substrate or a foam plate.
  • the reflecting surface 12a of the first substrate 12 is a surface that reflects radio waves radiated from the primary radiator 11, and a plurality of conductor patches 21 are arranged on the reflecting surface 12a.
  • the back surface 12b of the first substrate 12 is a surface opposite to the reflection surface 12a, and the conductor 22 is arranged on the entire back surface 12b.
  • the second substrate 13 is realized by, for example, a dielectric substrate or a foam plate.
  • the second substrate 13 is arranged around the first substrate 12.
  • the reflecting surface 13a of the second substrate 13 is a surface that reflects radio waves radiated from the primary radiator 11, and a plurality of conductor patches 23 are arranged on the reflecting surface 13a.
  • the back surface 13b of the second substrate 13 is a surface opposite to the reflecting surface 13a, and the conductor 24 is arranged on the entire back surface 13b.
  • the hinge 14 is a connecting member that connects the first substrate 12 and the second substrate 13.
  • the normal vector v 13 of the reflecting surface 13a of the second substrate 13 are inclined with respect to the normal vector v 12 of the reflective surface 12a of the first substrate 12 .
  • FIG. 8 is an explanatory diagram showing the normal vector v 12 of the reflecting surface 12a, the normal vector v 13 of the reflecting surface 13a, the reflection direction of the radio wave by the reflecting surface 12a, and the reflecting direction of the radio wave by the reflecting surface 13a.
  • the normal vector v 12 of the reflective surface 12a of the first substrate 12 the angle ⁇ between normal vector v 13 of the reflecting surface 13a of the second substrate 13, Greater than 0 degrees and less than 90 degrees.
  • the reflector antenna device 3 shown in FIG. 2 four second substrates 13 are arranged around the first substrate 12. However, it is sufficient that one or more second substrates 13 are arranged around the first substrate 12, and the second substrate 13 arranged around the first substrate 12, for example, is 1. It may be one or three. In the reflector antenna device 3 shown in FIG. 2, the first substrate 12 and the second substrate 13 are connected by a hinge 14. However, this is only an example, the first substrate 12 and the second substrate 13 are not connected, and there may be a gap between the first substrate 12 and the second substrate 13. ..
  • the conductor patch 21 is a conductor applied to the reflecting surface 12a of the first substrate 12.
  • the phase of the radio wave reflected by the reflecting surface 12a can be changed by adjusting the size of each of the plurality of conductor patches 21 applied to the reflecting surface 12a or the arrangement of each of the plurality of conductor patches 21. Is possible.
  • the conductor 22 is a conductor provided on the entire back surface 12b of the first substrate 12.
  • the conductor patch 23 is a conductor applied to the reflecting surface 13a of the second substrate 13.
  • the phase of the radio wave reflected by the reflecting surface 13a can be changed by adjusting the size of each of the plurality of conductor patches 23 applied to the reflecting surface 13a or the arrangement of each of the plurality of conductor patches 23. Is possible.
  • the conductor 24 is a conductor provided on the entire back surface 13b of the second substrate 13.
  • a plurality of conductors are aligned so that the direction of reflection of radio waves by the reflection surface 12a of the first substrate 12 and the direction of reflection of radio waves by the reflection surface 13a of the second substrate 13 are aligned.
  • the size of each of the patches 21 and 23, or the arrangement of each of the plurality of conductor patches 21 and 23 is adjusted.
  • the arrows indicate the direction of reflection of radio waves.
  • the fact that the direction of reflection of radio waves by the reflecting surface 12a and the direction of reflection of radio waves by the reflecting surface 13a are not limited to those in which both reflection directions are exactly aligned, and both are within a range where there is no practical problem. The ones with different reflection directions are also included.
  • the reflector antenna device 3 When the reflector antenna device 3 is not in use, as shown in FIG. 7A, the second substrate 13 is superposed on the first substrate 12 to reduce the size of the reflector antenna device 3 and to reduce the size of the reflector antenna device 3. It is possible to improve the storability.
  • the reflector antenna device 3 As shown in FIG. 7C, the reflector antenna device 3 is used in a state where the second substrate 13 is open. When the second substrate 13 is open, the shape of the reflector antenna device 3 is a three-dimensional shape, and the shape of the reflector antenna device 3 is similar to the shape of a known parabolic antenna. Since the shape of the parabolic antenna remains a three-dimensional shape even when not in use, the parabolic antenna has poor storability.
  • the reflector antenna device 3 is more storable than the parabolic antenna because the second substrate 13 can be superposed on the first substrate 12 when not in use.
  • the signal transmission unit 1 outputs the transmission signal to the reflector antenna device 3.
  • the primary radiator 11 of the reflector antenna device 3 receives the transmission signal from the signal transmission unit 1, as shown in FIGS. 2 and 8, the radio wave related to the transmission signal is transmitted to the reflection surface 12a and the second substrate 12 of the first substrate 12. It radiates toward each of the reflecting surfaces 13a of the substrate 13 of 2.
  • the reflecting surface 12a of the first substrate 12 When the reflecting surface 12a of the first substrate 12 receives the radio wave radiated from the primary radiator 11, the reflecting surface 12a reflects the radio wave as shown in FIGS. 2 and 8.
  • the first substrate 12 is arranged parallel to the xy plane in the xyz coordinate axes.
  • the direction of reflection of radio waves by the reflecting surface 12a is a direction parallel to the z-axis.
  • 11a is a radio wave emission port in the primary radiator 11, and the radiation port 11a corresponds to a radio wave source.
  • the reflecting surface 13a of the second substrate 13 receives the radio wave radiated from the primary radiator 11, the reflecting surface 13a reflects the radio wave as shown in FIGS. 2 and 8.
  • the direction of reflection of radio waves by the reflection surface 13a is a direction parallel to the z-axis.
  • FIG. 9 shows the direction of reflection of radio waves by the dielectric substrate when the reflection surface of the radio waves is only the reflection surface of the flat plate-shaped dielectric substrate, similar to the reflect array antenna disclosed in Patent Document 1. It is explanatory drawing. As shown in FIG. 9, the flat plate-shaped dielectric substrate is arranged parallel to the xy plane in the xyz coordinate axes. When the reflecting surface of the radio wave is only the reflecting surface of the flat plate-shaped dielectric substrate, as shown in FIG. 9, the path length of the radio wave reflected near the center of the dielectric substrate (hereinafter, "first path length"). ”) And the path length of the radio wave reflected near the end of the dielectric substrate (hereinafter referred to as the“ second path length ”).
  • the difference between the first path length and the second path length is large, if a conductor is simply provided on the entire reflective surface of the dielectric substrate, the radio wave reflected near the center of the electric body substrate.
  • the phase of the radio wave reflected near the edge of the dielectric substrate is different. Therefore, the reflection direction of the radio wave reflected near the center of the electric body substrate and the reflection direction of the radio wave reflected near the edge of the dielectric substrate are different.
  • the radio wave reflected near the center of the electric body substrate can be obtained by adjusting the size of each of the plurality of conductor patches. It is possible to compensate for the difference between the phase of the radio wave and the phase of the radio wave reflected near the edge of the dielectric substrate. Therefore, even if the difference between the first path length and the second path length is large, by compensating for the phase difference, the reflection direction of the radio wave reflected near the center of the electric body substrate and the reflection direction of the dielectric substrate It is possible to align the reflection direction of the radio wave reflected near the end in substantially the same direction.
  • the frequency of the radio wave radiated from the primary radiator 11 may be switched. Since the first path length and the second path length are different, when the frequency of the radio wave radiated from the primary radiator 11 is switched, the radiation direction of the radio wave reflected near the center of the dielectric substrate and the radiation direction of the radio wave are determined. The radiation direction of the radio waves reflected near the edge of the dielectric substrate will not be aligned. That is, in the reflector antenna device shown in FIG. 9, if the frequency of the radio wave radiated from the primary radiator 11 is switched after the size of the conductor patch or the like is adjusted, the radiation direction of the radio wave will vary. .. Further, in the reflector antenna device shown in FIG. 9, among the radio waves radiated from the primary radiator 11, radio waves that are not reflected by the reflecting surface of the dielectric substrate and are unnecessarily radiated into the space are generated. The gain of the antenna may decrease.
  • the normal vector v 13 of the reflection surface 13a on the second substrate 13 is tilted with respect to the normal vector v 12 of the reflection surface 12a on the first substrate 12. .. That is, the normal vector v 12 of the reflecting surface 12a is in a direction parallel to the z-axis, whereas the normal vector v 13 of the reflecting surface 13a is in a direction different from the direction parallel to the z-axis, and the reflecting surface 13a
  • the normal vector v 13 of the above is tilted with respect to the normal vector v 12 of the reflecting surface 12a.
  • the reflector antenna device 3 shown in FIG. 8 Since the angle ⁇ formed by the normal vector v 12 of the reflecting surface 12a and the normal vector v 13 of the reflecting surface 13a is larger than 0 degrees and smaller than 90 degrees, the reflector antenna device 3 shown in FIG. 8 is , The difference between the first path length and the second path length is smaller than that of the reflector antenna device shown in FIG.
  • the reflector antenna device 3 since the difference between the first path length and the second path length is small, the radio waves radiated from the primary radiator 11 after the size of the conductor patches 21 and 23 are adjusted. Even if the frequency is switched, the variation in the radiation direction of the radio wave can be suppressed as compared with the reflector antenna device shown in FIG. In the reflector antenna device 3, since the normal vector v 13 of the reflection surface 13a is tilted with respect to the normal vector v 12 of the reflection surface 12a, the reflector antenna device 3 is the reflector antenna shown in FIG. Compared to the device, the proportion of radio waves that are unnecessarily radiated into the space is reduced, and the gain of the antenna is improved.
  • the conductor patches 21 and 23 have a rectangular shape.
  • the shape of the conductor patches 21 and 23 may be circular as shown in FIG. 10A, or may be a rectangular frame shape as shown in FIG. 10B.
  • the shape of the conductor patches 21 and 23 may be a ring shape as shown in FIG. 10C or a + shape as shown in FIG. 10D.
  • 10A shows circular conductor patches 21 and 23, and
  • FIG. 10B shows rectangular frame-shaped conductor patches 21 and 23.
  • FIG. 10C shows ring-shaped conductor patches 21 and 23, and FIG. 10D shows + -shaped conductor patches 21 and 23.
  • the shapes of the plurality of conductor patches 21 may be the same or different from each other.
  • the shapes of the plurality of conductor patches 23 may be the same or different from each other.
  • Each arrangement in the plurality of conductor patches 21 may be periodic or aperiodic. Further, each arrangement in the plurality of conductor patches 23 may be periodic or aperiodic.
  • the operation when the reflector antenna device 3 is used as a transmitting antenna is described.
  • the operation when the reflector antenna device 3 is used as a receiving antenna is reversible to the operation when it is used as a transmitting antenna.
  • the first substrate 12 in which a plurality of conductor patches 21 are arranged on the primary radiator 11 that emits radio waves and the reflecting surface 12a that reflects the radio waves emitted from the primary radiator 11.
  • the angle formed by the normal vector of the reflecting surface 12a on the first substrate 12 and the normal vector of the reflecting surface 13a on the second substrate 13 is larger than 0 degrees and smaller than 90 degrees.
  • the mirror antenna device 3 was configured. Therefore, the reflector antenna device 3 can suppress variations in the radiation direction of radio waves as compared with a reflect array antenna having only one flat plate-shaped dielectric substrate as a reflector.
  • Embodiment 2 In the reflector antenna device 3 shown in FIG. 2, the angle ⁇ formed by the normal vector v 12 of the reflecting surface 12a and the normal vector v 13 of the reflecting surface 13a in the state where the second substrate 13 is completely opened is , The hinge 14 keeps it constant. In the second embodiment, it is possible to switch the angle ⁇ formed by the normal vector v 12 of the reflecting surface 12a and the normal vector v 13 of the reflecting surface 13a in the state where the second substrate 13 is completely opened. The reflector antenna device 3 will be described.
  • FIG. 11 is a perspective view showing the reflector antenna device 3 according to the second embodiment.
  • the movable mechanism 30 is realized by a hinge or the like capable of switching the angle ⁇ formed by the normal vector v 12 of the reflecting surface 12a and the normal vector v 13 of the reflecting surface 13a. That is, as shown in FIG. 12, the movable mechanism 30 is realized by a hinge or the like capable of switching the angle ⁇ between the reflecting surface 12a and the reflecting surface 13a.
  • ⁇ ⁇ .
  • the movable mechanism 30 moves the second substrate 13 in order to switch the angle ⁇ formed by the normal vector v 12 of the reflecting surface 12a and the normal vector v 13 of the reflecting surface 13a.
  • 12A, 12B, and 12C are explanatory views showing a state in which the angle ⁇ between the reflecting surface 12a and the reflecting surface 13a is switched by the movable mechanism 30.
  • the angle ⁇ in FIG. 12A is about 10 degrees
  • the angle ⁇ in FIG. 12B is about 25 degrees
  • the angle ⁇ in FIG. 12B is about 35 degrees.
  • the movable mechanism 30 switches the angle ⁇ between the reflecting surface 12a and the reflecting surface 13a, the phase of the radio wave by the reflecting surface 13a changes, and the reflecting direction of the radio wave changes. Therefore, after the size of the conductor patches 21 and 23 is adjusted, the frequency of the radio wave radiated from the primary radiator 11 is switched, so that even if the radiation direction of the radio wave varies, the reflection surface 12a and the reflection surface 12a are reflected. By switching the angle ⁇ with the surface 13a, it is possible to suppress variations in the radiation direction of radio waves.
  • FIG. 13 is an explanatory diagram showing a simulation result of the radiation characteristics of the reflector antenna device 3.
  • the horizontal axis of the graph shown in FIG. 13 indicates the radiation direction of the radio wave radiated from the reflector antenna device 3, and the vertical axis of the graph shown in FIG. 13 is the gain of the radio wave radiated from the reflector antenna device 3. Is shown. In the example of FIG.
  • the beam having a gain of 10 [dB] The width has changed from an angle of 4.8 degrees to an angle of 7.6 degrees.
  • the reflector antenna device 3 shown in FIG. 11 in order to switch the normal vector v 12 of the reflective surface 12a of the first substrate 12, the angle ⁇ between normal vector v 13 of the reflecting surface 13a of the second substrate 13,
  • the reflector antenna device 3 shown in FIG. 11 is configured so as to include a movable mechanism 30 that can move the second substrate 13. Therefore, the reflector antenna device 3 shown in FIG. 11 can further suppress variations in the radiation direction of radio waves as compared with the reflector antenna device 3 shown in FIG.
  • Embodiment 3 In the reflector antenna device 3 shown in FIG. 2, a backfire antenna is used as the primary radiator 11. In the third embodiment, as shown in FIG. 14, a reflector antenna device 3 using a horn antenna as the primary radiator 41 will be described.
  • FIG. 14 is a side view showing the reflector antenna device 3 according to the third embodiment.
  • the primary radiator 41 is realized by a horn antenna. Similar to the primary radiator 11 shown in FIG. 2, the primary radiator 41 transmits radio waves related to the transmission signal output from the signal transmission unit 1 to the reflection surface 12a of the first substrate 12 and the reflection surface of the second substrate 13. It radiates toward each of 13a.
  • the primary radiator 41 is applied to the reflector antenna device 3 shown in FIG.
  • FIG. 15 is an explanatory diagram showing the normal vector v 12 of the reflecting surface 12a, the normal vector v 13 of the reflecting surface 13a, the reflection direction of the radio wave by the reflecting surface 12a, and the reflecting direction of the radio wave by the reflecting surface 13a.
  • the reflector antenna device 3 shown in FIG. 14 similarly to the reflector antenna device 3 shown in FIG. 2, the normal vector v 12 of the reflection surface 12a on the first substrate 12 and the reflection surface 13a on the second substrate 13
  • the angle ⁇ formed by the normal vector v 13 of is larger than 0 degrees and smaller than 90 degrees. Therefore, the reflector antenna device 3 shown in FIG. 14 also emits radio waves as a reflector, as compared with the reflect array antenna provided with only one flat plate-shaped dielectric substrate, as in the reflector antenna device 3 shown in FIG. It is possible to suppress the variation in direction.
  • FIG. 16 is a side view showing the reflector antenna device 3 according to the fourth embodiment.
  • the primary radiator 51 is realized by a horn antenna.
  • the primary radiator 51 radiates radio waves related to the transmission signal output from the signal transmission unit 1 toward the secondary reflector 52.
  • the secondary reflector 52 reflects the radio waves radiated from the primary radiator 51 toward the reflecting surface 12a of the first substrate 12 and the reflecting surface 13a of the second substrate 13, respectively.
  • the primary radiator 51 and the secondary reflector 52 are applied to the reflector antenna device 3 shown in FIG.
  • FIG. 17 is an explanatory diagram showing the normal vector v 12 of the reflecting surface 12a, the normal vector v 13 of the reflecting surface 13a, the reflection direction of the radio wave by the reflecting surface 12a, and the reflecting direction of the radio wave by the reflecting surface 13a.
  • the reflector antenna device 3 shown in FIG. 16 similarly to the reflector antenna device 3 shown in FIG. 2, the normal vector v 12 of the reflection surface 12a on the first substrate 12 and the reflection surface 13a on the second substrate 13
  • the angle ⁇ formed by the normal vector v 13 of is larger than 0 degrees and smaller than 90 degrees. Therefore, the reflector antenna device 3 shown in FIG. 16 also emits radio waves more than the reflect array antenna provided with only one flat plate-shaped dielectric substrate as the reflector, as in the reflector antenna device 3 shown in FIG. It is possible to suppress the variation in direction.
  • the reflector antenna device 3 shown in FIG. 16 uses a ring-focused Gregorian secondary reflector as the secondary reflector 52, in which the central portion of the reflecting surface of the radio wave is recessed from the peripheral portion of the reflecting surface.
  • the reflector antenna device 3 has a ring focus Cassegrain in which, for example, as shown in FIG. 18, the central portion of the reflecting surface of radio waves is more convex than the peripheral portion of the reflecting surface.
  • the sub-reflector 53 of the above may be provided.
  • FIG. 18 is a side view showing another reflector antenna device 3 according to the fourth embodiment.
  • the same reference numerals as those in FIGS. 2 and 16 indicate the same or corresponding parts, and thus the description thereof will be omitted.
  • the sub-reflecting mirror 53 transmits the radio waves radiated from the primary radiator 51 to the reflecting surface 12a of the first substrate 12 and the reflecting surface 13a of the second substrate 13, respectively. Reflect toward.
  • the primary radiator 51 and the secondary reflector 53 are applied to the reflector antenna device 3 shown in FIG.
  • the primary radiator 51 and the secondary reflector 53 may be applied to the reflector antenna device 3 shown in FIG.
  • the sub-reflector included in the reflector antenna device 3 is not limited to the ring-focus Gregorian sub-reflector 52 or the ring-focus Cassegrain sub-reflector 53, and any shape of the sub-reflector may be used. Can be done.
  • the reflecting mirror antenna device 3 has a plurality of conductor patches 55 arranged on the reflecting surface 54a of the radio waves as a secondary reflecting mirror that reflects the radio waves radiated from the primary radiator 51, for example.
  • the third substrate 54 may be provided.
  • FIG. 19 is a side view showing another reflector antenna device 3 according to the fourth embodiment.
  • the same reference numerals as those in FIGS. 2 and 16 indicate the same or corresponding parts, and thus the description thereof will be omitted.
  • FIG. 20 is a plan view showing the reflection surface 54a of the third substrate 54 in the other reflector antenna device 3 according to the fourth embodiment.
  • FIG. 21 is a side view showing a third substrate 54 in the other reflector antenna device 3 according to the fourth embodiment.
  • the third substrate 54 is realized, for example, by a dielectric substrate or a foam plate.
  • the reflecting surface 54a of the third substrate 54 is a surface that reflects the radio waves radiated from the primary radiator 11 toward each of the reflecting surface 12a of the first substrate 12 and the reflecting surface 13a of the second substrate 13. Yes, a plurality of conductor patches 55 are arranged on the reflecting surface 54a.
  • the back surface 54b of the third substrate 54 is a surface opposite to the reflecting surface 54a, and the conductor 56 is arranged on the entire back surface 54b.
  • the conductor patch 55 is a conductor applied to the reflecting surface 54a of the third substrate 54.
  • the phase of the radio wave reflected by the reflecting surface 54a can be changed by adjusting the size of each of the plurality of conductor patches 55 applied to the reflecting surface 54a or the arrangement of each of the plurality of conductor patches 55. Is possible.
  • the conductor 56 is a conductor provided on the entire back surface 54b of the third substrate 54.
  • the reflector antenna device 3 shown in FIG. 19 similarly to the reflector antenna device 3 shown in FIG. 2, the normal vector v 12 of the reflection surface 12a on the first substrate 12 and the reflection surface 13a on the second substrate 13
  • the angle ⁇ formed by the normal vector v 13 of is larger than 0 degrees and smaller than 90 degrees. Therefore, the reflector antenna device 3 shown in FIG. 19 also emits radio waves more than the reflect array antenna provided with only one flat plate-shaped dielectric substrate as the reflector, as in the reflector antenna device 3 shown in FIG. It is possible to suppress the variation in direction.
  • the present disclosure is suitable for reflector antenna devices with a primary radiator. Further, the present disclosure is suitable for a communication device including a reflector antenna device.
  • 1 signal transmitter, 2 signal receiver, 3 reflector antenna device 11 primary radiator, 11a emission port, 12 first substrate, 12a reflecting surface, 12b back surface, 13 second substrate, 13a reflecting surface, 13b back surface , 14 hinges, 21 conductor patches, 22 conductors, 23 conductor patches, 24 conductors, 30 movable mechanisms, 41 primary radiators, 51 primary radiators, 52, 53 secondary reflectors, 54 third substrates, 54a reflective surfaces, 54b Back, 55 conductor patch, 56 conductor.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Un dispositif d'antenne à réflecteur (3) est conçu pour comprendre : un radiateur primaire (11) qui rayonne des ondes radio ; une première plaque de base (12) dans laquelle une pluralité de pastilles conductrices (21) sont disposées sur une surface réfléchissante (12a) destinée à réfléchir les ondes radio rayonnées à partir du radiateur primaire (11) ; et des secondes plaques de base (13) qui sont disposées sur la périphérie de la première plaque de base (12) et dans chacune desquelles une pluralité de pastilles conductrices (23) sont disposées sur une surface réfléchissante (13a) destinée à réfléchir les ondes radio rayonnées à partir du radiateur primaire (11), l'angle formé entre un vecteur normal de la surface réfléchissante (12a) dans la première plaque de base (12) et un vecteur normal de la surface réfléchissante (13a) dans chaque seconde plaque de base (13) étant supérieur à zéro et inférieur à 90 degrés.
PCT/JP2020/001905 2020-01-21 2020-01-21 Dispositif d'antenne à réflecteur et dispositif de communication WO2021149143A1 (fr)

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PCT/JP2020/001905 WO2021149143A1 (fr) 2020-01-21 2020-01-21 Dispositif d'antenne à réflecteur et dispositif de communication
JP2021560841A JP6995260B2 (ja) 2020-01-21 2020-01-21 反射鏡アンテナ装置及び通信装置

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010020914A1 (en) * 2000-03-10 2001-09-13 Antoine Roederer Reflector antenna comprising a plurality of panels
JP2014165754A (ja) * 2013-02-26 2014-09-08 Mitsubishi Heavy Ind Ltd 指向特性可変アンテナ
JP2018510559A (ja) * 2015-02-24 2018-04-12 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 電子回路を有する反射器および反射器を有するアンテナデバイス

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010020914A1 (en) * 2000-03-10 2001-09-13 Antoine Roederer Reflector antenna comprising a plurality of panels
JP2014165754A (ja) * 2013-02-26 2014-09-08 Mitsubishi Heavy Ind Ltd 指向特性可変アンテナ
JP2018510559A (ja) * 2015-02-24 2018-04-12 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 電子回路を有する反射器および反射器を有するアンテナデバイス

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JPWO2021149143A1 (fr) 2021-07-29

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