WO2021261550A1 - Transmitting/receiving apparatus and method of transmitting/receiving - Google Patents

Transmitting/receiving apparatus and method of transmitting/receiving Download PDF

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Publication number
WO2021261550A1
WO2021261550A1 PCT/JP2021/023925 JP2021023925W WO2021261550A1 WO 2021261550 A1 WO2021261550 A1 WO 2021261550A1 JP 2021023925 W JP2021023925 W JP 2021023925W WO 2021261550 A1 WO2021261550 A1 WO 2021261550A1
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WO
WIPO (PCT)
Prior art keywords
antenna
transmitting
receiving apparatus
receiving
wireless communication
Prior art date
Application number
PCT/JP2021/023925
Other languages
French (fr)
Inventor
Teppei Sato
Hajime Takano
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Sony Group Corporation
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Filing date
Publication date
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Publication of WO2021261550A1 publication Critical patent/WO2021261550A1/en

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    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • the present disclosure relates to a transmitting/receiving apparatus and a method of transmitting/receiving.
  • An unmanned aircraft is controlled by operations of a transmitting/receiving apparatus.
  • the unmanned aircraft needs to ensure stable transmitting/receiving by the transmitting/receiving apparatus over short- and long-ranges. This requires antennas with high gain to maintain stable short- and long-range communications between the transmitting/receiving apparatus and the unmanned aircraft.
  • antenna devices include an antenna device described in Patent Document 1 below.
  • the antenna device described in Patent Document 1 is provided with a loop antenna and a rod antenna, and electricity is supplied to only the loop antenna when the rod antenna is stored, and to both the loop antenna and the rod antenna when the rod antenna is pulled out.
  • the antenna shape changes between when the rod antenna is stored and when pulled-out, it is difficult to maintain a stable communication state all the time in both short- and long-range communications simultaneously.
  • the present disclosure solves the above-mentioned problems, and aims to provide a transmitting/receiving apparatus and a method of transmitting/receiving that enable stable short- and long-range communications.
  • a transmitting/receiving apparatus includes: a communication control unit; a first wireless communication unit and a second wireless communication unit connected in parallel to the communication control unit; a first antenna connected to the first wireless communication unit; and a second antenna connected to the second wireless communication unit and different from the first antenna in directivity.
  • a method of transmitting/receiving wherein a plurality of antennas that differ from each other in directivity are provided and at least one of the antennas performs transmitting/receiving according to a transmitting/receiving distance.
  • the transmitting/receiving apparatus and the method of transmitting/receiving of the present disclosure enable stable short-range and long-range communications.
  • Fig. 1 is a schematic diagram illustrating a transmitting/receiving apparatus of the present embodiment.
  • Fig. 2 is a schematic diagram illustrating the installation of first and second antennas.
  • Fig. 3 is a schematic diagram illustrating the relation between the first and the second antennas.
  • Fig. 4 is a schematic diagram illustrating the directivities of the first and the second antennas.
  • Fig. 5 is a schematic diagram illustrating the theoretical directivities of the first and the second antennas.
  • FIG. 1 is a schematic diagram illustrating a configuration of the transmitting/receiving apparatus of the present embodiment.
  • the transmitting/receiving apparatus of the present embodiment is applied to an unmanned aircraft capable of autonomous flight, such as a drone, as a transmitting/receiving body, and performs transmitting/receiving to/from this unmanned aircraft.
  • the transmitting/receiving apparatus at least transmits operation signals to the unmanned aircraft and receives images from the camera mounted on the unmanned aircraft.
  • a transmitting/receiving apparatus 10 includes a communication control unit 11, a first wireless communication unit 12, a second wireless communication unit 13, a first antenna 14, and a second antenna 15.
  • the communication control unit 11 controls the communication with the unmanned aircraft by controlling the operation of the first and the second wireless communication units 12 and 13.
  • the first wireless communication unit 12 and the second wireless communication unit 13 are connected in parallel to the communication control unit 11.
  • the first wireless communication unit 12 and the second wireless communication unit 13 have substantially the same configuration.
  • the first and the second wireless communication units 12 and 13, although unillustrated, include at least a power amplifier (PA), a band pass filter (BPF), a matching filter, a duplexer, and a low noise amplifier (LNA).
  • PA power amplifier
  • BPF band pass filter
  • LNA low noise amplifier
  • the first antenna 14 is connected to the first wireless communication unit 12.
  • the first antenna 14 differs from the second antenna 15 in the directivity of radio waves.
  • the first antenna 14 is a rod antenna (dipole antenna) and has a linear shape.
  • the second antenna 15 is connected to the second wireless communication unit 13.
  • the second antenna 15 differs from the first antenna 14 in the directivity of radio waves.
  • the second antenna 15 is a patch antenna and has a flat shape.
  • the second antenna 15, which is a patch antenna is a planar antenna including a radiating element 15b on a surface of a dielectric substrate 15a and a ground conductor plate (unillustrated) on a bottom surface of the dielectric substrate 15a.
  • the first antenna 14 emits maximum electromagnetic radiation in a direction perpendicular to a conductor wire and zero electromagnetic radiation in a direction parallel to the conductor wire.
  • the directivity which is the relation between an angle of radiation and its intensity, has a shape of two circles in a row, like a figure eight.
  • the first antenna 14 is mainly used for short-range communication (e.g., 300 m).
  • the second antenna 15 has directivity of a radio wave that is substantially perpendicular to the radiation plane of the radiating element 15b.
  • the second antenna 15 has directivity in a specific direction.
  • the second antenna 15 is mainly used for long-range communication (e.g., 2 km to 10 km).
  • the communication control unit 11 transmits signals by the first and the second antennas 14 and 15, and receives signals and images by the first and the second antennas 14 and 15. Reception by the first antenna 14 and second antenna 15 is treated as maximum ratio combining diversity reception (or selective diversity reception).
  • the communication control unit 11 is connected to a power supply unit, which is unillustrated.
  • the communication control unit 11 supplies electricity to the first and the second antennas 14 and 15 simultaneously via the first and the second wireless communication units 12 and 13.
  • the first antenna 14 and second antenna 15 have at least one feeding point.
  • Fig. 2 is a schematic diagram illustrating the installation of the first antenna 14 and the second antenna 15, and Fig. 3 is a schematic diagram illustrating the relation between the first and the first antennas.
  • the transmitting/receiving apparatus 10 includes a housing 21, a handle unit 22, and two control sticks 23, 24.
  • the housing 21 has a rectangular shape and has internal structures built therein.
  • the handle unit 22 has a U-shape in plan view and is provided integrally with the housing 21.
  • the handle unit 22 is used as a handle of the transmitting/receiving apparatus 10.
  • Control sticks 23 and 24 are provided on the surface of the housing 21.
  • the control sticks 23, 24 operate, for example, an unmanned aircraft.
  • the first antenna 14 is built in the handle unit 22.
  • the second antenna 15 is built in the housing 21.
  • the first antenna 14 and the second antenna 15 is preferably arranged in a predetermined relation.
  • the handle unit 22 includes a pair of mounting sections 22a, 22b and a connecting section 22c.
  • the pair of left and right mounting sections 22a, 22b are disposed on a front surface of the housing 21 so as to project outward in the substantially orthogonal direction to the front surface.
  • the pair of mounting sections 22a, 22b are arranged with a predetermined distance therebetween and are substantially parallel to each other.
  • the connecting section 22c connects the tips of the pair of mounting sections 22a and 22b to each other.
  • the connecting section 22c is arranged so as to be substantially orthogonal to the pair of mounting sections 22a, 22b.
  • the first antenna 14 is built in the mounting section 22a so that the conductor wire arranged in the longitudinal direction of the first antenna 14 is substantially parallel to the mounting section 22a.
  • the second antenna 15 is built in a predetermined position of the housing 21 opposite to the mounting section 22a having the first antenna 14 built therein so that the radiation plane is substantially orthogonal to the conductor wire of the first antenna 14.
  • the angle ⁇ between the direction of the conductor wire of the first antenna 14 and the radiation plane of the radiating element of the second antenna 15 is optimally an angle that forms a right angle.
  • the mounting positions of the first and the second antennas 14 and 15 depend on the shapes of the housing 21 and the handle unit 22, and the angle ⁇ is preferably in a range of 39 to 90 degrees.
  • Fig. 4 is a schematic diagram illustrating the directivities of the first and the second antennas
  • Fig. 5 is a schematic diagram illustrating the theoretical directivities of the first and the second antennas.
  • the first antenna 14 is a rod antenna
  • the second antenna 15 is a patch antenna.
  • the direction of the conductor wire of the first antenna 14 is a Y direction
  • the direction perpendicular to the radiation plane of the second antenna 15 is a Z direction.
  • Fig. 4 illustrates the directivity of the first antenna 14 in the ZX, ZY, and XY planes
  • the middle part of Fig. 4 illustrates the directivity of the second antenna 15 in the ZX, ZY, and XY planes
  • the lower part of Fig. 4 illustrates the combined directivity of the first antenna 14 and second antenna 15 in the ZX, ZY, and XY planes.
  • the transmitting/receiving apparatus 10 includes a communication control unit 11, a first wireless communication unit 12 and a second wireless communication unit 13 connected in parallel to the communication control unit 11, a first antenna 14 connected to the first wireless communication unit 12, and a second antenna 15 connected to the second wireless communication unit 13 and different from the first antenna 14 in the directivity. Therefore, combining the directivities of the first antenna 14 and the second antenna 15 enables stable short- and long-range communications.
  • the first antenna 14 is a dipole antenna. This makes it possible to simplify the structure.
  • the direction of the conductor wire of the dipole antenna and the radiation plane of the second antenna 15 are arranged in a cross direction. Therefore, the range covered by the first antenna 14 and the range covered by the second antenna 15 can be defined appropriately.
  • the transmitting/receiving apparatus 10 includes the second antenna 15 with the radiating element 15b on the dielectric substrate 15a. Therefore, the second antenna 15 can be made smaller.
  • the second antenna 15 is a patch antenna. This makes it possible to simplify the structure.
  • the transmitting/receiving apparatus 10 includes the housing 21, the handle unit 22, and the control sticks (control unit) 23, 24, and has the first antenna 14 built in the handle unit 22, and the second antenna 15 built in the housing 21. Therefore, the first antenna 14 and the second antenna 15 can be properly stored while being maintained in an optimal arrangement configuration.
  • the first antenna 14 and the second antenna 15 are capable of transmitting and receiving signals and images to and from an unmanned aircraft. This makes it possible to stably control the unmanned aircraft over a wide area.
  • the first antenna 14 and the second antenna 15 that differ from each other in the directivity are provided and at least one of the first antenna 14 and the second antenna 15 performs transmitting/receiving according to the transmitting/receiving distance. Therefore, combining the directivities of the first antenna 14 and the second antenna 15 enables stable short- and long-range communications.
  • a dipole antenna (rod antenna) is applied as the first antenna 14 and a patch antenna is applied as the second antenna 15, but a configuration is not limited thereto.
  • a monopole antenna with low directivity, an inverted F antenna, a loop antenna, and the like may be applied as the first antenna 14, and a slot antenna or the like may be applied as the second antenna 15.
  • two antennas with different directivities that is, the first and the second antennas 14 and 15 are provided, but three or more antennas with different directivities may be provided.
  • a transmitting/receiving apparatus comprising: a communication control unit; a first wireless communication unit and a second wireless communication unit connected in parallel to the communication control unit; a first antenna connected to the first wireless communication unit; and a second antenna connected to the second wireless communication unit and different from the first antenna in directivity.
  • the transmitting/receiving apparatus according to (1) wherein the first antenna is a dipole antenna.
  • the transmitting/receiving apparatus according to any one of (1) to (3), wherein the second antenna includes a radiating element on a dielectric substrate thereof.
  • the transmitting/receiving apparatus comprising: a handle unit; and a control unit, wherein the first antenna is built in the handle unit and the second antenna is built in the housing.
  • a method of transmitting/receiving wherein a plurality of antennas that differ from each other in directivity are provided and at least one of the antennas performs transmitting/receiving according to a transmitting/receiving distance.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

A transmitting/receiving apparatus includes: a communication control unit; a first wireless communication unit and a second wireless communication unit connected in parallel to the communication control unit; a first antenna connected to the first wireless communication unit; and a second antenna connected to the second wireless communication unit and different from the first antenna in directivity.

Description

TRANSMITTING/RECEIVING APPARATUS AND METHOD OF TRANSMITTING/RECEIVING
The present disclosure relates to a transmitting/receiving apparatus and a method of transmitting/receiving.
There is a growing interest in the industrial use of drones and other unmanned aircraft capable of autonomous flight. An unmanned aircraft is controlled by operations of a transmitting/receiving apparatus. The unmanned aircraft needs to ensure stable transmitting/receiving by the transmitting/receiving apparatus over short- and long-ranges. This requires antennas with high gain to maintain stable short- and long-range communications between the transmitting/receiving apparatus and the unmanned aircraft. Examples of antenna devices include an antenna device described in Patent Document 1 below.
JP H11-330828 A
The antenna device described in Patent Document 1 is provided with a loop antenna and a rod antenna, and electricity is supplied to only the loop antenna when the rod antenna is stored, and to both the loop antenna and the rod antenna when the rod antenna is pulled out. In this case, although the antenna shape changes between when the rod antenna is stored and when pulled-out, it is difficult to maintain a stable communication state all the time in both short- and long-range communications simultaneously.
The present disclosure solves the above-mentioned problems, and aims to provide a transmitting/receiving apparatus and a method of transmitting/receiving that enable stable short- and long-range communications.
According to the present disclosure, a transmitting/receiving apparatus is provided that includes: a communication control unit; a first wireless communication unit and a second wireless communication unit connected in parallel to the communication control unit; a first antenna connected to the first wireless communication unit; and a second antenna connected to the second wireless communication unit and different from the first antenna in directivity.
Moreover, according to the present disclosure, a method of transmitting/receiving is provided, wherein a plurality of antennas that differ from each other in directivity are provided and at least one of the antennas performs transmitting/receiving according to a transmitting/receiving distance.
The transmitting/receiving apparatus and the method of transmitting/receiving of the present disclosure enable stable short-range and long-range communications.
Fig. 1 is a schematic diagram illustrating a transmitting/receiving apparatus of the present embodiment. Fig. 2 is a schematic diagram illustrating the installation of first and second antennas. Fig. 3 is a schematic diagram illustrating the relation between the first and the second antennas. Fig. 4 is a schematic diagram illustrating the directivities of the first and the second antennas. Fig. 5 is a schematic diagram illustrating the theoretical directivities of the first and the second antennas.
A suitable embodiment of the present disclosure will be described in detail with reference to the drawings below. It should be noted that the present disclosure is not limited by the present embodiment, and when there is a plurality of embodiments, the present disclosure includes ones obtained from the embodiments combined with each other. The components in the embodiments include those that the skilled person could have easily thought of, those that are substantially identical, and those that are within what is called a range of equivalent.
The explanation shall be given in the following order.
1. Configuration of a transmitting/receiving apparatus
2. Mounting structure of antennas
3. Directivity of antennas
4. Effect of the present embodiment
<1. Configuration of a transmitting/receiving apparatus>
Fig. 1 is a schematic diagram illustrating a configuration of the transmitting/receiving apparatus of the present embodiment.
The transmitting/receiving apparatus of the present embodiment is applied to an unmanned aircraft capable of autonomous flight, such as a drone, as a transmitting/receiving body, and performs transmitting/receiving to/from this unmanned aircraft. In other words, the transmitting/receiving apparatus at least transmits operation signals to the unmanned aircraft and receives images from the camera mounted on the unmanned aircraft.
In the present embodiment, as illustrated in Fig. 1, a transmitting/receiving apparatus 10 includes a communication control unit 11, a first wireless communication unit 12, a second wireless communication unit 13, a first antenna 14, and a second antenna 15.
The communication control unit 11 controls the communication with the unmanned aircraft by controlling the operation of the first and the second wireless communication units 12 and 13.
The first wireless communication unit 12 and the second wireless communication unit 13 are connected in parallel to the communication control unit 11. The first wireless communication unit 12 and the second wireless communication unit 13 have substantially the same configuration. The first and the second wireless communication units 12 and 13, although unillustrated, include at least a power amplifier (PA), a band pass filter (BPF), a matching filter, a duplexer, and a low noise amplifier (LNA).
The first antenna 14 is connected to the first wireless communication unit 12. The first antenna 14 differs from the second antenna 15 in the directivity of radio waves. The first antenna 14 is a rod antenna (dipole antenna) and has a linear shape. The second antenna 15 is connected to the second wireless communication unit 13. The second antenna 15 differs from the first antenna 14 in the directivity of radio waves. The second antenna 15 is a patch antenna and has a flat shape. Specifically, the second antenna 15, which is a patch antenna, is a planar antenna including a radiating element 15b on a surface of a dielectric substrate 15a and a ground conductor plate (unillustrated) on a bottom surface of the dielectric substrate 15a.
The first antenna 14 emits maximum electromagnetic radiation in a direction perpendicular to a conductor wire and zero electromagnetic radiation in a direction parallel to the conductor wire. The directivity, which is the relation between an angle of radiation and its intensity, has a shape of two circles in a row, like a figure eight. The first antenna 14 is mainly used for short-range communication (e.g., 300 m). The second antenna 15 has directivity of a radio wave that is substantially perpendicular to the radiation plane of the radiating element 15b. The second antenna 15 has directivity in a specific direction. The second antenna 15 is mainly used for long-range communication (e.g., 2 km to 10 km).
By controlling the operation of the first wireless communication unit 12 and the second wireless communication unit 13, the communication control unit 11 transmits signals by the first and the second antennas 14 and 15, and receives signals and images by the first and the second antennas 14 and 15. Reception by the first antenna 14 and second antenna 15 is treated as maximum ratio combining diversity reception (or selective diversity reception). The communication control unit 11 is connected to a power supply unit, which is unillustrated. The communication control unit 11 supplies electricity to the first and the second antennas 14 and 15 simultaneously via the first and the second wireless communication units 12 and 13. The first antenna 14 and second antenna 15 have at least one feeding point.
<2. Mounting structure of antennas>
Fig. 2 is a schematic diagram illustrating the installation of the first antenna 14 and the second antenna 15, and Fig. 3 is a schematic diagram illustrating the relation between the first and the first antennas.
As illustrated in Fig. 2, the transmitting/receiving apparatus 10 includes a housing 21, a handle unit 22, and two control sticks 23, 24. The housing 21 has a rectangular shape and has internal structures built therein. The handle unit 22 has a U-shape in plan view and is provided integrally with the housing 21. The handle unit 22 is used as a handle of the transmitting/receiving apparatus 10. Control sticks 23 and 24 are provided on the surface of the housing 21. The control sticks 23, 24 operate, for example, an unmanned aircraft.
The first antenna 14 is built in the handle unit 22. The second antenna 15 is built in the housing 21. The first antenna 14 and the second antenna 15 is preferably arranged in a predetermined relation. The handle unit 22 includes a pair of mounting sections 22a, 22b and a connecting section 22c. In contrast to the connecting section 22c, the pair of left and right mounting sections 22a, 22b are disposed on a front surface of the housing 21 so as to project outward in the substantially orthogonal direction to the front surface. The pair of mounting sections 22a, 22b are arranged with a predetermined distance therebetween and are substantially parallel to each other. The connecting section 22c connects the tips of the pair of mounting sections 22a and 22b to each other. The connecting section 22c is arranged so as to be substantially orthogonal to the pair of mounting sections 22a, 22b. The first antenna 14 is built in the mounting section 22a so that the conductor wire arranged in the longitudinal direction of the first antenna 14 is substantially parallel to the mounting section 22a. The second antenna 15 is built in a predetermined position of the housing 21 opposite to the mounting section 22a having the first antenna 14 built therein so that the radiation plane is substantially orthogonal to the conductor wire of the first antenna 14.
In other words, as illustrated in Fig. 3, the angle θ between the direction of the conductor wire of the first antenna 14 and the radiation plane of the radiating element of the second antenna 15 is optimally an angle that forms a right angle. However, the mounting positions of the first and the second antennas 14 and 15 depend on the shapes of the housing 21 and the handle unit 22, and the angle θ is preferably in a range of 39 to 90 degrees.
<3. Directivity of antennas>
Fig. 4 is a schematic diagram illustrating the directivities of the first and the second antennas, and Fig. 5 is a schematic diagram illustrating the theoretical directivities of the first and the second antennas. The first antenna 14 is a rod antenna, and the second antenna 15 is a patch antenna. In Fig. 4, the direction of the conductor wire of the first antenna 14 is a Y direction, and the direction perpendicular to the radiation plane of the second antenna 15 is a Z direction.
The upper part of Fig. 4 illustrates the directivity of the first antenna 14 in the ZX, ZY, and XY planes, the middle part of Fig. 4 illustrates the directivity of the second antenna 15 in the ZX, ZY, and XY planes, and the lower part of Fig. 4 illustrates the combined directivity of the first antenna 14 and second antenna 15 in the ZX, ZY, and XY planes. As can be seen from the lower part of Fig. 4, in the combined directivity of the first and the second antennas 14 and 15, there are no null points in the forward direction and the coverage is extended in a direction other than the forward direction. In other words, the theoretical directivities of the first antenna 14 and the second antenna 15 are illustrated in Fig. 5. Here, Fig. 5 illustrates the directivity in the ZX plane when the angle θ = 90 degrees between the first and the second antennas 14 and 15. Therefore, combining the first antenna 14 and the second antenna 15, which have different characteristics, improves the directivity to a long-range and expands the coverage in short-range.
<4. Effect of the present embodiment>
The transmitting/receiving apparatus 10 according to the present embodiment includes a communication control unit 11, a first wireless communication unit 12 and a second wireless communication unit 13 connected in parallel to the communication control unit 11, a first antenna 14 connected to the first wireless communication unit 12, and a second antenna 15 connected to the second wireless communication unit 13 and different from the first antenna 14 in the directivity. Therefore, combining the directivities of the first antenna 14 and the second antenna 15 enables stable short- and long-range communications.
In the transmitting/receiving apparatus 10 according to the present embodiment, the first antenna 14 is a dipole antenna. This makes it possible to simplify the structure.
In the transmitting/receiving apparatus 10 according to the present embodiment, the direction of the conductor wire of the dipole antenna and the radiation plane of the second antenna 15 are arranged in a cross direction. Therefore, the range covered by the first antenna 14 and the range covered by the second antenna 15 can be defined appropriately.
The transmitting/receiving apparatus 10 according to the present embodiment includes the second antenna 15 with the radiating element 15b on the dielectric substrate 15a. Therefore, the second antenna 15 can be made smaller.
In the transmitting/receiving apparatus 10 according to the present embodiment, the second antenna 15 is a patch antenna. This makes it possible to simplify the structure.
The transmitting/receiving apparatus 10 according to the present embodiment includes the housing 21, the handle unit 22, and the control sticks (control unit) 23, 24, and has the first antenna 14 built in the handle unit 22, and the second antenna 15 built in the housing 21. Therefore, the first antenna 14 and the second antenna 15 can be properly stored while being maintained in an optimal arrangement configuration.
In the transmitting/receiving apparatus according to the present embodiment, the first antenna 14 and the second antenna 15 are capable of transmitting and receiving signals and images to and from an unmanned aircraft. This makes it possible to stably control the unmanned aircraft over a wide area.
In the method of transmitting/receiving according to the present embodiment, the first antenna 14 and the second antenna 15 that differ from each other in the directivity are provided and at least one of the first antenna 14 and the second antenna 15 performs transmitting/receiving according to the transmitting/receiving distance. Therefore, combining the directivities of the first antenna 14 and the second antenna 15 enables stable short- and long-range communications.
In the embodiment described above, a dipole antenna (rod antenna) is applied as the first antenna 14 and a patch antenna is applied as the second antenna 15, but a configuration is not limited thereto. For example, a monopole antenna with low directivity, an inverted F antenna, a loop antenna, and the like may be applied as the first antenna 14, and a slot antenna or the like may be applied as the second antenna 15.
In the embodiment described above, two antennas with different directivities, that is, the first and the second antennas 14 and 15 are provided, but three or more antennas with different directivities may be provided.
The foregoing is a detailed description of a suitable embodiment of the present disclosure with reference to the accompanying drawings, but the technical scope of the present disclosure is not limited to such examples. It is clear that a person having ordinary knowledge in the technical field of the present disclosure could have easily thought of various examples of changes or modifications within the scope of the technical ideas described in the claims, and these are naturally understood to belong to the technical scope of the present disclosure.
The effects described herein are only descriptive or illustrative and not limiting. In other words, the technique according to the present disclosure may produce other effects that are obvious to the skilled person from the description herein, along with or in place of the aforementioned effects.
The following configurations also fall within the technical scope of the present disclosure.
(1)
　　A transmitting/receiving apparatus comprising:
　　a communication control unit; a first wireless communication unit and a second wireless communication unit connected in parallel to the communication control unit;
　　a first antenna connected to the first wireless communication unit; and
　　a second antenna connected to the second wireless communication unit and different from the first antenna in directivity.
(2)
　　The transmitting/receiving apparatus according to (1), wherein the first antenna is a dipole antenna.
(3)
　　The transmitting/receiving apparatus according to (2), wherein a direction of a conductor wire of the dipole antenna and a radiation plane of the second antenna are arranged in a cross direction.
(4)
　　The transmitting/receiving apparatus according to any one of (1) to (3), wherein the second antenna includes a radiating element on a dielectric substrate thereof.
(5)
　　The transmitting/receiving apparatus according to (4), wherein the second antenna is a patch antenna.
(6)
　　The transmitting/receiving apparatus according to any one of (1) to (5) comprising: a handle unit; and a control unit, wherein the first antenna is built in the handle unit and the second antenna is built in the housing.
(7)
　　The transmitting/receiving apparatus according to any one of (1) to (6), wherein the first and the second antennas are capable of transmitting and receiving signals and images to and from an unmanned aircraft.
(8)
　　A method of transmitting/receiving, wherein a plurality of antennas that differ from each other in directivity are provided and at least one of the antennas performs transmitting/receiving according to a transmitting/receiving distance.
10 Transmitting/receiving apparatus
11 Communication control unit
12 First wireless communication unit
13 Second wireless communication unit
14 First antenna
15 Second antenna
21 Housing
22 Handle unit
22a, 22b Mounting section
22c Connecting section
23, 24 Control stick (Control unit)

Claims (8)

  1. 　　A transmitting/receiving apparatus comprising:
    　　a communication control unit; a first wireless communication unit and a second wireless communication unit connected in parallel to the communication control unit;
    　　a first antenna connected to the first wireless communication unit; and
    　　a second antenna connected to the second wireless communication unit and different from the first antenna in directivity.
  2. 　　The transmitting/receiving apparatus according to claim 1, wherein the first antenna is a dipole antenna.
  3. 　　The transmitting/receiving apparatus according to claim 2, wherein a direction of a conductor wire of the dipole antenna and a radiation plane of the second antenna are arranged in a cross direction.
  4. 　　The transmitting/receiving apparatus according to claim 1, wherein the second antenna includes a radiating element on a dielectric substrate thereof.
  5. 　　The transmitting/receiving apparatus according to claim 4, wherein the second antenna is a patch antenna.
  6. 　　The transmitting/receiving apparatus according to claim 1 comprising: a handle unit; and a control unit, wherein the first antenna is built in the handle unit and the second antenna is built in the housing.
  7. 　　The transmitting/receiving apparatus according to claim 1, wherein the first and the second antennas are capable of transmitting and receiving signals and images to and from an unmanned aircraft.
  8. 　　A method of transmitting/receiving, wherein a plurality of antennas that differ from each other in directivity are provided and at least one of the antennas performs transmitting/receiving according to a transmitting/receiving distance.
PCT/JP2021/023925 2020-06-26 2021-06-24 Transmitting/receiving apparatus and method of transmitting/receiving WO2021261550A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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