WO2021079757A1 - アンテナ装置 - Google Patents
アンテナ装置 Download PDFInfo
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- WO2021079757A1 WO2021079757A1 PCT/JP2020/038227 JP2020038227W WO2021079757A1 WO 2021079757 A1 WO2021079757 A1 WO 2021079757A1 JP 2020038227 W JP2020038227 W JP 2020038227W WO 2021079757 A1 WO2021079757 A1 WO 2021079757A1
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- antenna
- antenna device
- reflector
- reflecting mirror
- degrees
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- 230000005855 radiation Effects 0.000 claims description 40
- 230000001413 cellular effect Effects 0.000 description 24
- 239000000758 substrate Substances 0.000 description 21
- 238000004891 communication Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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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
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
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- 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
- H01Q19/17—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 the primary radiating source comprising two or more radiating elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
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- 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
- 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
- H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2658—Phased-array fed focussing structure
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- 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
- H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
Definitions
- This disclosure relates to an antenna device.
- the radiated power occupancy rate in the global direction has been newly added as an evaluation index of antenna and wireless communication performance, and the standard value has been set in 3GPP (3rd generation partnership project). It is being considered. With the introduction of this evaluation index, it is important to improve the area ratio in which the radiated power when scanning the beam of the antenna reaches a predetermined characteristic, that is, the characteristic of spherical coverage.
- Patent Document 1 discloses a configuration that improves spherical coverage by arranging a plurality of types of antenna elements around a mobile terminal.
- Patent Document 2 discloses an example of a configuration in which a reflecting mirror is provided for an array antenna fed with a phase difference and antenna directivity is radiated in the horizontal direction with respect to the antenna substrate.
- Patent Document 1 requires a plurality of types of antenna element arrangements and a complicated feeding configuration, and there is room for consideration regarding cost and mounting area.
- Patent Document 2 since the radiation direction of the antenna is limited to the opening surface direction of the reflector, it is not effective for improving spherical coverage.
- the non-limiting embodiment of the present disclosure contributes to the provision of a technique capable of expanding the directivity control range of the array antenna with a simple configuration and improving the spherical coverage characteristics.
- the antenna device in the present disclosure includes an array antenna having a plurality of antenna elements arranged along a certain direction and a predetermined distance along the direction from one of the antenna elements located at both ends of the plurality of antenna elements. It is provided with a reflector provided at a distant position.
- the directivity control range of the array antenna can be expanded by a simple configuration, so that the spherical coverage characteristics can be improved.
- a perspective view showing an example of the configuration of the antenna device according to the first embodiment of the present disclosure A perspective view showing an example of the operation of the antenna device according to the first embodiment of the present disclosure.
- a perspective view showing an example of the configuration of the antenna device according to the second embodiment of the present disclosure A perspective view showing an example of the configuration of the antenna device according to the third embodiment of the present disclosure.
- FIG. 1 is a perspective view showing an example of the configuration of the antenna device 100 according to the first embodiment of the present disclosure.
- a phase device (not shown) connected to each of the plurality of array antenna elements 102-k, and a reflecting mirror 104 arranged vertically or substantially vertically on the dielectric substrate 101.
- a GND surface (not shown) is formed on the back surface of the dielectric substrate 101.
- Each of the array antenna elements 102-k may be, for example, a planar antenna element called a patch antenna element or a microstrip antenna element.
- a planar antenna element called a patch antenna element or a microstrip antenna element.
- four square patch antenna elements 102-k are shown, but the number of array antenna elements is not limited to four, and may be two or more.
- FIG. 2 is a perspective view showing an example of the operation of the antenna device according to the first embodiment of the present disclosure.
- the antenna device 100 configured as described above will be described below with reference to FIG. 2 and an example of its operation.
- the three radiation directions of the array antenna controlled by the feeding phase difference generated by the phase device are the radiation direction ⁇ (solid line) 105, the radiation direction ⁇ (broken line) 106, and the radiation direction ⁇ (dotted line). Represented by 107.
- the radiation direction ⁇ 105 is the radiation direction when the feed phase difference is 150 degrees
- the radiation direction ⁇ 106 is the radiation direction when the feed phase difference is 0 degrees
- the radiation direction ⁇ 107 is the feed phase difference of 90 degrees.
- the radial direction of time As will be described later with reference to FIGS. 4 and 5, the radial direction ⁇ 106 corresponds to the maximum feeding phase difference effective for the beam tilt (tilt) of the array antenna 102.
- the radiation direction ⁇ 106 is, for example, a direction perpendicular to or substantially perpendicular to the surface of the dielectric substrate (hereinafter, also simply referred to as “substrate”) 101 (in other words, a direction along the positive direction of the Z axis).
- substrate the dielectric substrate
- the starting point of the radiation direction ⁇ 106 corresponds to, for example, a position on the substrate 101 between the array antenna element 102-2 and the array antenna element 102-3, for example, the center of the length (X-axis direction) of the array antenna 102.
- the Y-axis corresponds to the width direction of the dielectric substrate 101 (or the array antenna 102).
- the main radiation direction of the array antenna 102 is set with respect to the surface of the substrate 101 as shown in FIG. 2 according to the feeding phase difference. It is diagonally upward (in other words, a direction deviated to the positive side of the X-axis with respect to the radial direction ⁇ 106).
- the main radiation direction of the array antenna 102 approaches the direction along the surface of the substrate 101 (the positive direction of the X-axis).
- the main radiation direction of the array antenna 102 is the direction toward the curved surface of the reflector 104 as shown in FIG.
- the radio waves incident on the reflecting mirror 104 are reflected by the curved surface of the reflecting mirror 104 in the direction indicated by, for example, the solid arrow 108 (in other words, the direction along the surface of the substrate 101 (negative direction of the X-axis).
- the directivity control range of the array antenna 102 can be expanded.
- FIG. 3 is a diagram showing an example of the arrangement of the reflector according to the first embodiment of the present disclosure.
- FIG. 3 shows the relationship between the antenna device 100 and the reflector 104 according to the present disclosure.
- ⁇ a represents the opening angle (deg) of the reflecting mirror 104
- the height (Z direction) of the reflecting mirror 104 is D / 2 (mm).
- D represents the aperture diameter of the reflector 104.
- f is the focal length (mm) of the reflector 104.
- C indicates the center position of the array antenna 102 in the longitudinal direction, and is, for example, on the center line of the opposite sides of the array antenna elements 102-2 and 102-3. Therefore, in the case of this example, the focal length f is the distance from the center C in the longitudinal direction of the array antenna 102 to the position of the reflecting mirror 104 on the dielectric substrate 101.
- the maximum radiation direction is as described later in FIGS. 4 and 5.
- the directivity control range of the array antenna 102 can be extended to the direction along the surface of the substrate 101 (negative direction of the X-axis), and as a result, the spherical coverage of the antenna device can be improved.
- the height D / 2 (mm) of the reflector 104 is designed to correspond to the maximum ⁇ a that the antenna device 100 can control by the feeding phase of the phase controller.
- ⁇ a is -50 degrees to -90 degrees. Since the radio wave is reflected by the reflector 104 and radiated in the horizontal direction (+90 degree side) on the opposite side, the maximum radiation direction in FIG. 5 (a) can be further brought closer to -90 degree. It can improve the spherical coverage.
- the shape of the reflecting surface of the reflecting mirror 104 is, for example, a parabolic shape, but it may be another curved surface shape.
- the shape of the reflecting surface may be any shape that can convert the direction of the radio wave obliquely incident on the horizontal plane (incident direction) into the direction along the horizontal plane (exiting direction) by reflection.
- the reflecting mirror 104 may be arranged at a predetermined distance in the vicinity of one of both ends of the array antenna 102 in the longitudinal direction on the dielectric substrate 101. Since the height D / 2 of the reflecting mirror 104 can be reduced as the reflecting mirror 104 approaches the array antenna 102, it is preferable that the reflecting mirror 104 is as close to the array antenna 102 as possible. On the other hand, when viewed from the Z direction, it is a condition that the reflecting mirror 104 does not cover the center C of the array antenna 102, in other words, the opening angle of the reflecting mirror 104 is less than 90 degrees.
- FIG. 4 is a diagram showing an example of a radiation pattern at a feeding phase difference of 0 degrees of the antenna device according to the first embodiment of the present disclosure.
- ⁇ 90 degrees is the positive direction of the X axis
- +90 degrees is the negative direction of the X axis
- 0 degrees is the positive direction of the Z axis.
- the direction, 180 degrees, is the negative direction of the Z axis.
- FIG. 4 (a) shows an example of a radiation pattern at a feeding phase difference of 0 degrees in a conventional antenna device without a reflector
- FIG. 4 (b) shows the first embodiment of the present disclosure having a reflector 104.
- An example of the radiation pattern at 0 degree of feeding phase difference of the antenna device 100 is shown.
- the conventional antenna device without a reflector shown in FIG. 4A when the feeding phase difference is 0 degrees, the 0 degree direction becomes the maximum radiation direction 410.
- the antenna device 100 having the reflecting mirror 104 shown in FIG. 4B when the feeding phase difference is 0 degrees, the 0 degree direction becomes the maximum radiation direction 420, and this point is the antenna having no reflecting mirror 104. Similar to the device.
- FIG. 5 is a diagram showing an example of a radiation pattern at a feeding phase difference of 150 degrees of the antenna device according to the first embodiment of the present disclosure.
- ⁇ 90 degrees is the positive direction of the X-axis
- +90 degrees is the negative direction of the X-axis
- 0 degrees is the positive direction of the Z-axis.
- the direction, 180 degrees is the negative direction of the Z axis.
- FIG. 5A shows an example of a radiation pattern at a feeding phase difference of 150 degrees in a conventional antenna device without a reflector
- FIG. 5B shows an antenna according to the embodiment of the present disclosure having a reflector 104.
- An example of the radiation pattern at the feeding phase difference of 150 degrees of the apparatus 100 is shown.
- the maximum radiation direction is 510 in the direction of about ⁇ 50 degrees.
- the antenna device 100 having the reflecting mirror 104 shown in FIG. 5B when the feeding phase difference is 150 degrees, the +90 degree direction becomes the maximum radiation direction 520, which is the case where the reflecting mirror 104 is not provided. It differs greatly from the maximum radiation direction of about -50 degrees.
- the feeding phase difference of the antenna device not having the reflecting mirror 104 shown in FIG. 5A is 150 degrees. It can be seen that the radiation pattern is closer to a circle than the radiation pattern of the time. Further, in the case of the antenna device 100 having the reflecting mirror 104 when the feeding phase difference of FIG. 4B is 0 degree, the feeding phase difference of the antenna device not having the reflecting mirror 104 shown in FIG. 4A is 0. It can be seen that the radiation pattern is closer to a circle than the radiation pattern at the time of degree.
- the radiation pattern approaches a circle when the feeding phase difference is 0 degrees and 150 degrees as compared with the antenna device not having the reflecting mirror 104.
- the spherical coverage of the antenna device 100 is improved.
- FIG. 6 is a perspective view showing an example of the configuration of the antenna device according to the second embodiment of the present disclosure
- FIG. 7 is a perspective view showing an example of the configuration of the antenna device according to the third embodiment of the present disclosure. is there.
- the antenna device 200 has a configuration in which the reflector 104 in the antenna device 100 is shared with a part of the cellular antenna 205.
- the difference between the antenna device 200 of FIG. 6 and the antenna device 300 of FIG. 7 is the difference in shape between the cellular antenna 205 and the cellular antenna 305.
- the cellular antenna 205 shown in FIG. 6 has an L-shaped three-dimensional shape when viewed from the Y direction, supports the reflector 104 on one side of the cellular antenna 205, and supports the reflector 104 on one side of the cellular antenna 205, and the other side of the cellular antenna 205. It is configured to be installed on the dielectric substrate 101.
- the cellular antenna 305 shown in FIG. 7 includes two cellular antenna components 305-1 and 305-2, and is planarly on the dielectric substrate 101, integrally with the reflecting mirror 104, or in contact with the reflecting mirror 104. It is configured.
- the reflecting mirror 104 and the cellular antenna are configured as one or in contact with each other, so that it is not necessary to provide a dedicated component for supporting the reflecting mirror 104. Therefore, it is possible to configure the antenna devices 200 and 300 which are low in cost or small in size and have improved spherical coverage characteristics.
- Such a cellular antenna may be an antenna for applications such as wireless LAN (Local Area Network), GPS (Global Positioning System) or Bluetooth (registered trademark) other than for LTE.
- wireless LAN Local Area Network
- GPS Global Positioning System
- Bluetooth registered trademark
- FIG. 8 is a perspective view showing the configuration of the antenna device 400 according to the fourth embodiment of the present disclosure.
- Part 405 of the housing is, for example, a component that constitutes a part of the housing of the mobile wireless terminal.
- the antenna device 400 has a configuration in which the reflector 104 in the antenna device 100 is shared with a part 405 of the housing of the portable wireless terminal.
- the reflector 104 is installed on the surface of a part 405 of the housing.
- the reflecting mirror 104 may be molded integrally with a part 405 of the housing, or may be molded as a separate part, and then the reflecting mirror 104 may be arranged in the part 405 of the housing.
- the housing 405 is shared as a support component for the reflector 104, it is not necessary to provide a dedicated support component for the reflector 104, and the spherical coverage characteristics are improved at low cost or small size. It is possible to configure the antenna device 400 to be used.
- a cellular antenna may be installed on any surface of a part of the housing 405, and the cellular antenna and the reflecting mirror 104 may be integrated as described with reference to FIGS. 6 and 7.
- FIG. 9 is a perspective view showing an example of the configuration of the antenna device according to the fifth embodiment of the present disclosure.
- the antenna device 500 shown in FIG. 9 includes a dielectric substrate 101, an array antenna 102, and a reflector 104 as described above, and further includes a cellular antenna 505-1 that can be used in wireless communication such as LTE (long term evolution) or 5G. It is equipped with 505-2.
- LTE long term evolution
- 5G 5G
- Each of the cellular antennas 505-1 and 505-2 is composed of, for example, a monopole antenna or an inverted F antenna, and may be approximately one-fourth the length ( ⁇ / 4) of the wavelength ⁇ corresponding to the frequency to be received. Just do it.
- the cellular antennas 505-1 and 505-2 are arranged on the dielectric substrate 101 on both sides of the array antenna 102 and the reflecting mirror 104.
- one cellular antenna may be arranged on one side of the dielectric substrate 101 in the longitudinal direction.
- the reflecting mirror 104 may be integrally molded with the cellular antenna 505-1 or 505-2.
- a 5G antenna and a 5G antenna in the 6 GHz band or less or a cellular antenna before 4G can be compactly configured on the same dielectric substrate 101, and further, the 5G antenna can be used.
- the reflecting mirror 104 since the reflecting mirror 104 is provided, the spherical coverage characteristics can be improved while being compact or low cost.
- Embodiments 1 to 5 have been described as examples of the techniques disclosed in the present application.
- the technique in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, etc. are made.
- This disclosure can be realized by software, hardware, or software linked with hardware.
- Each functional block used in the description of the above embodiment is partially or wholly realized as an LSI which is an integrated circuit, and each process described in the above embodiment is partially or wholly. It may be controlled by one LSI or a combination of LSIs.
- the LSI may be composed of individual chips, or may be composed of one chip so as to include a part or all of the functional blocks.
- the LSI may include data input and output.
- LSIs may be referred to as ICs, system LSIs, super LSIs, and ultra LSIs depending on the degree of integration.
- the method of making an integrated circuit is not limited to LSI, and may be realized by a dedicated circuit, a general-purpose processor, or a dedicated processor. Further, an FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connection and settings of the circuit cells inside the LSI may be used.
- FPGA Field Programmable Gate Array
- the present disclosure may be realized as digital processing or analog processing.
- Non-limiting examples of communication devices include telephones (mobile phones, smartphones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital stills / video cameras, etc.). ), Digital players (digital audio / video players, etc.), wearable devices (wearable cameras, smart watches, tracking devices, etc.), game consoles, digital book readers, telehealth telemedicines (remote health) Care / medicine prescription) devices, vehicles with communication functions or mobile transportation (automobiles, airplanes, ships, etc.), and combinations of the above-mentioned various devices can be mentioned.
- communication devices include telephones (mobile phones, smartphones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital stills / video cameras, etc.). ), Digital players (digital audio / video players, etc.), wearable devices (wearable cameras, smart watches, tracking devices, etc.), game consoles, digital book readers, telehealth telemedicines (
- Communication devices are not limited to those that are portable or mobile, but are all types of devices, devices, systems that are not portable or fixed, such as smart home devices (home appliances, lighting equipment, smart meters or Includes measuring instruments, control panels, etc.), vending machines, and any other "Things” that can exist on the IoT (Internet of Things) network.
- smart home devices home appliances, lighting equipment, smart meters or Includes measuring instruments, control panels, etc.
- vending machines and any other “Things” that can exist on the IoT (Internet of Things) network.
- Communication includes data communication using a combination of these, in addition to data communication using a cellular system, wireless LAN system, communication satellite system, etc.
- the communication device also includes a device such as a controller or a sensor that is connected or connected to a communication device that executes the communication function described in the present disclosure.
- a device such as a controller or a sensor that is connected or connected to a communication device that executes the communication function described in the present disclosure.
- it includes controllers and sensors that generate control and data signals used by communication devices that perform the communication functions of the communication device.
- Communication devices also include infrastructure equipment that communicates with or controls these non-limiting devices, such as base stations, access points, and any other device, device, or system. ..
- the antenna device in the present disclosure includes an array antenna having a plurality of antenna elements arranged along a certain direction and a predetermined distance along the direction from one of the antenna elements located at both ends of the plurality of antenna elements. It is provided with a reflector provided at a distant position.
- the position of the reflector of the antenna device of the present disclosure is a position where the radio wave is incident in a part of the angle range in the main radiation direction of the radio wave by the array antenna which changes according to the feeding phase difference between the antenna elements.
- the reflecting surface of the reflecting mirror has a curved shape that converts the reflecting direction when the main radiation direction is oblique to the horizontal plane to a direction along the horizontal plane.
- the aperture angle of the reflector of the antenna device of the present disclosure is less than 90 degrees.
- the reflector of the antenna device of the present disclosure is configured by using another antenna different from the array antenna or a part of the other antenna.
- the reflector of the antenna device of the present disclosure is supported by the components constituting the antenna device.
- the antenna element of the antenna device of the present disclosure is a planar antenna.
- This disclosure is applicable to, for example, a device or terminal that performs wireless communication.
- Antenna device 101 Dielectric substrate 102 Array antenna 102-1 to 102-4 Array antenna element 104 Reflector 205 Cellular antenna 305-1, 305-2 Cellular antenna 405 Part of housing 505 -1,505-2 Cellular antenna
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Abstract
Description
図1~図5を用いて、実施の形態1を説明する。
図1は、本開示の実施の形態1に係るアンテナ装置100の構成の一例を示す斜視図である。アンテナ装置100は、単層又は多層の誘電体基板101の表面に形成された複数のアレーアンテナ素子102-k(例えば、k=1,2,3又は4。以下まとめてアレーアンテナ102とも呼ぶ)と、複数のアレーアンテナ素子102-kのそれぞれに接続された位相器(図示せず)と、誘電体基板101上に垂直又は略垂直に配置された反射鏡104と、を含む。誘電体基板101の裏面にはGND面(図示せず)が形成されている。
図2は、本開示の実施の形態1に係るアンテナ装置の動作の一例を示す斜視図である。上述のように構成されたアンテナ装置100について、図2を参照し、その動作の一例を以下で説明する。位相器(図示せず)で生成した給電位相差により制御されたアレーアンテナの3つの放射方向を、放射方向α(実線)105と、放射方向γ(破線)106と、放射方向β(点線)107によって表す。放射方向α105は、給電位相差が150度のときの放射方向であり、放射方向γ106は、給電位相差が0度のときの放射方向であり、放射方向β107は、給電位相差が90度のときの放射方向である。図4及び図5を参照して後述するように、放射方向γ106は、アレーアンテナ102のビームチルト(傾き)に対して有効な最大の給電位相差に対応する。
図6及び図7を用いて、本開示による実施の形態2及び3をそれぞれ説明する。図6は、本開示の実施の形態2に係るアンテナ装置の構成の一例を示す斜視図であり、図7は、本開示の実施の形態3に係るアンテナ装置の構成の一例を示す斜視図である。
図8を用いて、実施の形態4を説明する。図8は、本開示の実施の形態4に係るアンテナ装置400の構成を示す斜視図である。筐体の一部405は、例えば、携帯無線端末の筐体の一部を構成する部品である。アンテナ装置400は、アンテナ装置100における反射鏡104を携帯無線端末の筐体の一部405と共用した構成である。図8に示した例では、反射鏡104が筐体の一部405の面上に設置されている。反射鏡104は、筐体の一部405と一体として成型されてもよく、又は別々の部品として成型され、その後、反射鏡104が筐体の一部405に配置されてもよい。このような構成により、筐体の一部405を反射鏡104の支持部品として共用するため、反射鏡104のために専用の支持部品を設ける必要がなく、低コスト又は小型で球面カバレッジ特性が向上するアンテナ装置400を構成することが可能となる。
図9は、本開示の実施の形態5に係るアンテナ装置の構成の一例を示す斜視図である。図9に記載のアンテナ装置500は、既に説明した誘電体基板101とアレーアンテナ102と反射鏡104とを備え、さらにLTE(long term evolution)あるいは5Gといった無線通信において使用できるセルラーアンテナ505-1、505-2を備える。
以上のように、本出願において開示する技術の例示として、実施の形態1~5を説明した。しかしながら、本開示における技術は、これに限定されず、変更、置き換え、付加、省略などを行った実施の形態にも適用できる。また、上記実施の形態1~5で説明した各構成要素を組み合わせて、新たな実施の形態とすることも可能である。
本開示におけるアンテナ装置は、或る方向に沿って配列された複数のアンテナ素子を有するアレーアンテナと、前記複数のアンテナ素子のうち両端に位置するアンテナ素子の一方から前記方向に沿って所定距離だけ離れた位置に設けられた反射鏡と、を備える。
101 誘電体基板
102 アレーアンテナ
102-1~102-4 アレーアンテナ素子
104 反射鏡
205 セルラーアンテナ
305-1,305-2 セルラーアンテナ
405 筐体の一部
505-1,505-2 セルラーアンテナ
Claims (6)
- 或る方向に沿って配列された複数のアンテナ素子を有するアレーアンテナと、
前記複数のアンテナ素子のうち両端に位置するアンテナ素子の一方から前記方向に沿って所定距離だけ離れた位置に設けられた反射鏡と、を備えた、
アンテナ装置。 - 前記反射鏡の位置は、前記アンテナ素子間の給電位相差に応じて変化する前記アレーアンテナによる電波の主放射方向の角度範囲の一部において前記電波が入射する位置であり、
前記反射鏡の反射面は、前記主放射方向が水平面に対して斜めである場合の反射方向を前記水平面に沿った方向に変換する曲面形状を有する、
請求項1に記載のアンテナ装置。 - 前記反射鏡の開口角は、90度未満である、
請求項1に記載のアンテナ装置。 - 前記反射鏡は、前記アレーアンテナとは異なる別のアンテナあるいは前記別のアンテナの一部を用いて構成された、
請求項1記載のアンテナ装置。 - 前記反射鏡は、前記アンテナ装置を構成する部品により支持される、
請求項1に記載のアンテナ装置。 - 前記アンテナ素子は、平面アンテナである、請求項1に記載のアンテナ装置。
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CN202080073226.8A CN114556701A (zh) | 2019-10-21 | 2020-10-09 | 天线装置 |
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JP2015216520A (ja) * | 2014-05-12 | 2015-12-03 | パナソニックIpマネジメント株式会社 | アンテナ装置 |
JP3212787U (ja) | 2016-04-26 | 2017-10-05 | アップル インコーポレイテッド | 積層プリント回路上のミリ波アンテナを有する電子デバイス |
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JP2015216520A (ja) * | 2014-05-12 | 2015-12-03 | パナソニックIpマネジメント株式会社 | アンテナ装置 |
JP3212787U (ja) | 2016-04-26 | 2017-10-05 | アップル インコーポレイテッド | 積層プリント回路上のミリ波アンテナを有する電子デバイス |
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