WO2006075437A1 - Ensemble antenne, appareil de communication sans fil et radar - Google Patents

Ensemble antenne, appareil de communication sans fil et radar Download PDF

Info

Publication number
WO2006075437A1
WO2006075437A1 PCT/JP2005/020352 JP2005020352W WO2006075437A1 WO 2006075437 A1 WO2006075437 A1 WO 2006075437A1 JP 2005020352 W JP2005020352 W JP 2005020352W WO 2006075437 A1 WO2006075437 A1 WO 2006075437A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna device
dielectric lens
electromagnetic beam
primary radiator
circumferential direction
Prior art date
Application number
PCT/JP2005/020352
Other languages
English (en)
Japanese (ja)
Inventor
Nobumasa Kitamori
Original Assignee
Murata Manufacturing Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co., Ltd. filed Critical Murata Manufacturing Co., Ltd.
Publication of WO2006075437A1 publication Critical patent/WO2006075437A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • 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
    • H01Q19/06—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 refracting or diffracting devices, e.g. lens
    • H01Q19/062—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 refracting or diffracting devices, e.g. lens for focusing
    • 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
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9315—Monitoring blind spots
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93272—Sensor installation details in the back of the vehicles

Definitions

  • the present invention relates to an antenna device, a wireless communication device, and a radar device that can scan an electromagnetic beam such as a microwave or a millimeter wave over a predetermined angle range.
  • Patent Document 1 Conventionally, as this type of antenna device, for example, there are technologies disclosed in Patent Document 1 and Patent Document 2.
  • the antenna device disclosed in Patent Document 1 has a configuration in which a rectangular waveguide is connected to a fixed-side circular waveguide and a primary radiator is connected to a rotating-side circular waveguide.
  • a high-frequency signal fed from the wave tube to the fixed circular waveguide can be emitted from the primary radiator.
  • the electromagnetic beam emitted from the primary radiator can be scanned.
  • the antenna device disclosed in Patent Document 2 has six horn antennas opened radially over a 180 ° angle range in a casing, and these horn antennas are connected by an antenna switching switch. With this configuration, the electromagnetic beam can be scanned in a desired direction by switching the horn antenna at any time using the antenna switching switch.
  • Patent Document 1 Japanese Patent Laid-Open No. 2004-112660
  • Patent Document 2 Japanese Patent Laid-Open No. 2004-158911
  • the electromagnetic beam B transmitted from the antenna device 100 attached to the automobile 200 spreads in the vertical direction with respect to the road 210, the road surface reflection or multiple reflection of the electromagnetic beam B occurs. causes false detection. Therefore, as shown in Fig. 20 (b), the electromagnetic beam B is narrowed by narrowing it in the vertical direction with respect to the road 210 to avoid road surface reflections and the like. There is a need to. However, in order to achieve such a narrow beam structure in an antenna device including only a primary radiator such as a horn antenna, the antenna device itself must be made large, which increases the cost. It will be connected.
  • Patent Document 1 there is a method of narrowing the electromagnetic beam B by arranging a secondary radiator made of a convex dielectric lens in front of the primary radiator. Conceivable. This technology makes it possible to narrow the beam of the electromagnetic beam B in the direction perpendicular to the lead while avoiding an increase in the size of the antenna device 100.
  • the pattern of the electromagnetic beam B of the secondary radiator force only changes depending on the scanning direction. If the position of the radiator is shifted from the center of the dielectric lens, there is a problem that the antenna gain is greatly deteriorated.
  • the present invention has been made to solve the above-described problem, and can narrow a beam in the vertical direction without changing the antenna gain at the time of horizontal wide-angle scanning.
  • An object is to provide a communication device and a radar device.
  • an antenna device includes a primary radiator that radiates an electromagnetic beam, and secondary radiation that is disposed on the electromagnetic beam radiation side of the primary radiator.
  • the secondary radiator is a dielectric lens that is curved in a circular arc shape at a predetermined central angle and whose cross section perpendicular to the circumferential direction is the same shape, and the primary radiator is The structure is located on the center side of the dielectric lens.
  • the electromagnetic beam is transmitted via the secondary radiator.
  • the secondary radiator is a dielectric lens whose cross section perpendicular to the circumferential direction is the same shape, the pattern of the electromagnetic beam emitted from the secondary radiator is radiated at the desired angle.
  • the antenna gain and the like are the same in all scanning directions.
  • the invention of claim 2 is configured such that the center angle of the dielectric lens is an angle within a range of 40 ° to 360 ° in the antenna device according to claim 1.
  • the invention of claim 3 is the antenna device according to claim 1 or claim 2, wherein the primary radiator is a focal point of a lens surface formed in a cross section perpendicular to the circumferential direction of the dielectric lens. Position Is arranged near the focal position to narrow the electromagnetic beam emitted from this dielectric lens in the vertical direction.
  • the electromagnetic beam of the primary radiator force is narrowed in the vertical direction by the dielectric lens, so that the influence of road surface reflection due to diffusion of the electromagnetic beam can be reduced.
  • the invention of claim 4 is the antenna device according to claim 1 or claim 2, wherein the radiation direction of the electromagnetic beam radiated by the primary radiator is a cross section perpendicular to the circumferential direction of the dielectric lens.
  • the lens surface is set relatively upward with respect to the lens surface.
  • the invention of claim 5 is the antenna device according to any one of claims 1 to 4, wherein the primary radiator is a circle of the dielectric lens around the central axis of the dielectric lens. By rotating it in the circumferential direction, it was configured to have a rotation drive mechanism that enabled the primary radiator to scan the dielectric lens in the circumferential direction.
  • rotating the primary radiator enables continuous beam scanning, and the beam pattern and antenna gain are the same in all scanning directions.
  • the invention of claim 6 is the antenna device according to any one of claims 1 to 4, wherein the primary radiators are arranged in a radial pattern so as to be arranged along a circumferential direction of the dielectric lens.
  • the configuration is equipped with electromagnetic beam cutting ⁇ that enables scanning in the circumferential direction.
  • the invention of claim 7 is the antenna device according to any one of claims 1 to 6, wherein the dielectric lens is engraved on the inner surface or the outer surface along the circumferential direction.
  • the configuration is a zoeng lens with multiple engravings.
  • a wireless communication device is the antenna device according to any one of claims 1 and 7 and a transmitter that outputs a transmission signal to the antenna device, A receiving unit for receiving the received signal of the antenna device is used.
  • the transmission signal is output to the antenna device by the transmission unit, and the reception signal of the antenna device force is received by the reception unit.
  • Antenna characteristics such as antenna gain and beam pattern of the radiated electromagnetic beam do not change with the radiation angle.
  • a radar apparatus is the antenna apparatus according to claim 1 or 7, and a transmitter that outputs a transmission signal to the antenna apparatus, and the antenna A configuration is provided that includes a reception unit that receives a reception signal of the device force, and a detection processing unit that detects an electromagnetic beam reflecting object based on the reception signal received by the reception unit.
  • the transmission signal is output to the antenna device by the transmission unit. Also, after receiving the received signal of the antenna device force by the receiving unit, the electromagnetic beam reflecting object is detected by the detection processing unit based on the received signal. At this time, antenna characteristics such as antenna gain and beam pattern of the electromagnetic beam radiated from the antenna device force do not change according to the radiation angle, so that the detection distance, angle accuracy and resolution for the object do not change.
  • the invention of claim 10 is the radar apparatus according to claim 9, wherein a primary radiator is arranged in a radome integrated with a dielectric lens to constitute an antenna apparatus, and a transmitting unit And a housing housing the receiving unit and the detection processing unit are attached to the outside of the antenna device.
  • the secondary radiator is a dielectric lens whose cross section perpendicular to the circumferential direction has the same shape, and radiates from the secondary radiator. Since the pattern of the electromagnetic beam and the antenna gain, etc., are the same in all scanning directions, the antenna characteristics of the electromagnetic beam radiated from the secondary radiator are also affected by the difference in the radiation direction of the electromagnetic radiation emitted from the primary radiator There is an excellent effect that adverse effects due to changes in beam pattern, antenna gain, etc. can be prevented.
  • the electromagnetic beam can be narrowed in the vertical direction to reduce the influence of road surface reflection due to electromagnetic beam diffusion, it is small and has high performance. There is an effect that an antenna device can be provided.
  • the dielectric lens is a zoning lens, it is possible to provide an antenna device that can be thinned and reduced in cost and can be easily formed.
  • the antenna characteristics such as the antenna gain and beam pattern of the electromagnetic beam radiated from the antenna device do not change depending on the radiation angle, so that the detection distance is an angle. As a result, it is possible to provide a high-performance wireless communication apparatus with a low false detection rate that does not change due to the above.
  • the primary radiator is arranged in the radome in which the dielectric lens is integrally formed to constitute the antenna device, and the transmission unit, the reception unit, and the detection processing unit are arranged. Since the housed housing is attached to the outside of the antenna device, it is possible to provide a radar device that can be manufactured at low cost and can be easily assembled. Furthermore, in the invention of the radar device including the antenna device according to claim 5, the radar device for high-resolution and narrow-angle detection in long-distance detection, or conversely low in short-range detection, by changing only the radome. If radar devices with different applications such as a radar device with resolution and wide-angle detection can be configured, there is an effect.
  • FIG. 1 is a perspective view showing an antenna apparatus according to a first embodiment of the present invention.
  • FIG. 2 is a plan view of the antenna device.
  • FIG. 3 is a cross-sectional view taken along the line AA in FIG.
  • FIG. 4 is a schematic plan view showing wide-angle scanning.
  • FIG. 5 is a schematic sectional view showing narrowing of the beam.
  • FIG. 6 is a partially enlarged cross-sectional view for explaining each set value.
  • FIG. 7 is a diagram showing the relationship between the angle of an electromagnetic beam emitted from a dielectric lens cover and the relative antenna gain.
  • FIG. 8 is a schematic sectional view showing the internal structure of a radar apparatus according to a second embodiment of the invention.
  • FIG. 9 is an external view of a radar device.
  • FIG. 10 is a block diagram of a radar apparatus.
  • FIG. 11 is a plan view showing a mounting state of the radar apparatus.
  • FIG. 12 is a plan view showing a wide-angle scanning state.
  • FIG. 13 is a rear view showing a narrow beam state.
  • FIG. 14 is an external view of a radar apparatus according to a third embodiment of the present invention.
  • FIG. 15 is a perspective view of the antenna device portion excluding the upper surface portion of the radome in order to show the shape of the dielectric lens.
  • FIG. 16 is a schematic sectional view showing the internal structure of the radar apparatus according to this embodiment.
  • FIG. 17 is a schematic perspective view of an antenna apparatus according to a fourth embodiment of the present invention.
  • FIG. 18 is a perspective view showing a dielectric lens that is a main part of an antenna apparatus according to a fifth embodiment of the present invention.
  • FIG. 19 is a schematic sectional view showing a modification.
  • FIG. 20 is a schematic diagram for explaining the necessity of narrowing the electromagnetic beam.
  • FIG. 1 is a perspective view showing an antenna apparatus according to a first embodiment of the present invention
  • FIG. 2 is a plan view of the antenna apparatus
  • FIG. 3 is an arrow A—A in FIG. It is sectional drawing.
  • the antenna device 1 includes a dielectric lens 2 as a secondary radiator and a primary radiator 3.
  • the dielectric lens 2 is disposed on the electromagnetic beam radiation side of the primary radiator 3, and the shape thereof is an arc shape in a plan view as shown in FIG. Curved to surround ing.
  • the central angle ⁇ 2 of the dielectric lens 2 is set to 180 °.
  • the cross section perpendicular to the circumferential direction of the dielectric lens 2 is all set to the same shape. That is, as shown in FIG. 2, an arbitrary radial line length extending in the radial direction from the central axis M of the dielectric lens 2 and the circumferential direction of the dielectric lens 2 indicated by an arrow C are orthogonal to each other.
  • the surface S in which the radial line R cuts the dielectric lens 2 in the vertical direction is a cross section that is straight in the circumferential direction of the dielectric lens 2, and this cross section S is the dielectric material.
  • the cross section S of the dielectric lens 2 is formed into a convex lens shape that curves outward.
  • the aperture distribution and size are set as needed according to the expected antenna characteristics.
  • the primary radiator 3 is a horn antenna that radiates an electromagnetic beam toward the dielectric lens 2, and is located on the central axis M side of the dielectric lens 2, and is connected by a motor 30 as a rotational drive mechanism. And is rotatably supported. Specifically, as shown in FIG. 2, the motor 30 can rotate the primary radiator 3 in the circumferential direction of the dielectric lens 2 around the central axis M of the dielectric lens 2. It has become. Thus, the primary radiator 3 can scan in the circumferential direction of the dielectric lens 2 while emitting an electromagnetic beam. In this embodiment, the scanning angle 03 is set to 150 °.
  • the primary radiator 3 is disposed near the focal position f of the convex lens surface formed by the section S perpendicular to the circumferential direction of the dielectric lens 2 or near the focal position f.
  • the primary radiator 3 rotates in the circumferential direction while maintaining a distance D between the opening 3a and the inner surface S1 of the convex lens-shaped cross section S at a substantially focal length f.
  • FIG. 4 is a schematic plan view showing wide-angle scanning
  • FIG. 5 is a schematic cross-sectional view showing narrowing of the beam.
  • the primary radiator 3 is rotated by the motor 30 in the circumferential direction of the dielectric lens 2 and the electromagnetic lens B is radiated from the primary radiator 3 while rotating the circumference of the dielectric lens 2.
  • Wide-angle scanning can be performed at a scanning angle of 150 ° in the direction.
  • the cross section perpendicular to the circumferential direction of the dielectric lens 2 is all set to the same shape!
  • the antenna gain of the electromagnetic beam passing through the central part of the lens 2 and the antenna gain of the electromagnetic beam passing through a part different from the central part of the dielectric lens 2 are the same value.
  • the pattern of the electromagnetic beam B1 radiated from the center of the dielectric lens 2 as shown by the solid line and the radiation from the dielectric lens 2 at a different angle from the electromagnetic beam B1 as shown by the two-dot chain line and the broken line The pattern of electromagnetic beams B2 and B3 is the same. That is, the pattern of the electromagnetic beam B radiated from the dielectric lens 2 and the antenna gain are the same in all scanning directions of the primary radiator 3.
  • the primary radiator 3 is disposed at the focal position f of the dielectric lens 2 or in the vicinity of the focal position f, the primary radiator 3 is radiated from the outer surface S2 of the dielectric lens 2 as shown in FIG.
  • the electromagnetic beam B is typically a nearly parallel beam and is narrowed.
  • wide-angle scanning of the same beam pattern can be performed in the circumferential direction of the dielectric lens 2, and the electromagnetic beam can be projected in the vertical direction.
  • the beam can be narrowed.
  • the inventor performed a simulation to confirm the points to be applied.
  • FIG. 6 is a partially enlarged cross-sectional view for explaining each set value
  • FIG. 7 is a diagram showing the relationship between the angle of the electromagnetic beam B radiated from the dielectric lens 2 and the relative antenna gain.
  • a polycarbonate with a dielectric constant of 2.78 was used as the dielectric lens 2
  • the thickness T of the dielectric lens 2 was set to 12 mm
  • the vertical height H was set to 40 mm.
  • primary radiator 3 its width w is set to 4.5 mm
  • height h is set to 9 mm
  • depth m is set to 7 mm
  • distance D to dielectric lens 2 is set to 4 mm.
  • Fig. 7 In the simulation under the powerful setting, the results shown in Fig. 7 were obtained.
  • the curve bl shown by the solid line in Fig. 7 shows the relative antenna gain (dB) in the vertical direction of the electromagnetic beam
  • the curve b2 shown by the broken line shows the relative antenna gain in the scanning direction of the electromagnetic beam.
  • the antenna gain decreases greatly when the antenna gain deviates most from the angle in the radial direction (Odeg). That is, it can be seen that the electromagnetic beam B radiated from the primary radiator 3 is narrowed in the vertical direction by the dielectric lens 2.
  • the antenna is the most at the angle of radial direction (Odeg) The gain is high, but even if this angular force shifts, the antenna gain does not decrease greatly.
  • the electromagnetic beam B radiated from the primary radiator 3 is not narrowed in the circumferential direction by the dielectric lens 2 and the beam width remains relatively wide.
  • FIG. 8 is a schematic sectional view showing the internal structure of the radar apparatus according to the second embodiment of the present invention
  • FIG. 9 is an external view of the radar apparatus
  • FIG. 10 is a block diagram of the radar apparatus.
  • the radar device 4 of this embodiment includes the antenna device 1 of the first embodiment, a transmission unit 5, a reception unit 6, and a detection processing unit 7.
  • the antenna device 1 is assembled in the radome 40 of the radar device 4. That is, the dielectric lens 2 is provided with the upper and lower surface portions 40a and 40b of the dielectric, and the radome 40 in which the dielectric lens 2 is integrated is formed. The primary radiator 3 and the motor 30 were mounted in the radome 40.
  • the transmission unit 5, the reception unit 6, and the detection processing unit 7 are housed in a housing 42 that is attached to the outside of the radome 40 via a partition plate 41.
  • the transmission unit 5 is a part that outputs a transmission signal to the antenna device 1
  • the reception unit 6 is a part that receives a reception signal from the antenna device 1
  • the detection processing unit 7 is a reception signal received by the reception unit 6. This is the part that detects the electromagnetic beam reflecting object.
  • a voltage control oscillator 51 and an amplifier 52 constitute a transmission unit 5, and the amplifier 52 of this transmission unit 5 is connected to the antenna device 1 via a circulator 50. It has been continued.
  • the receiver 61 is configured by the mixer 61 and the directional coupler 62 for down-converting the signal received from the antenna device 1 to the intermediate frequency signal IF, and the input side of the mixer 61 of the receiver 6 has the circulator 50. And the output side is connected to the detection processing unit 7.
  • the oscillation signal output from the voltage controlled oscillator 51 is amplified by the amplifier 52 and transmitted from the antenna device 1 as a transmission signal via the directional coupler 62 and the circulator 50.
  • the received signal received from the antenna device 1 is input to the mixer 61 through the circuit 50 and a local signal from the directional coupler 62. Is down-converted using, and output to the detection processing unit 7 as an intermediate frequency signal IF.
  • FIG. 11 is a plan view showing a mounting state of the radar apparatus 4
  • FIG. 12 is a plan view showing a wide-angle scanning state
  • FIG. 13 is a rear view showing a narrow beam state.
  • the radar apparatus 4 is mounted on both sides of the rear part 201 of the automobile 200 so that the blind spot range of the driver can be detected.
  • the output terminal of the detection processing unit 7 of the radar device 4 is connected to a monitor (not shown) in the automobile 200 and the radar device 4 is operated, a transmission signal is output to the antenna device 1 by the transmission unit 5 and the electromagnetic beam B is emitted from the antenna device 1.
  • the primary radiator 3 of the antenna device 1 rotates within a range of 150 °
  • the electromagnetic beam B is scanned within a range of 150 ° on both sides of the automobile 200 as shown in FIG.
  • the electromagnetic beam B is reflected by the vehicle 20 (and received by the dielectric lens 2 and the primary radiator 3 of the antenna device 1.
  • the received signal is input to the detection processing unit 7 through the receiving unit 6, and the detection processing unit 7 detects the rear vehicle 200 'based on this received signal! It will be projected on.
  • the antenna gain, beam pattern, and the like of the electromagnetic beam B radiated from the antenna device 1 do not change depending on the scanning angle, so the detection distance, angular accuracy, and The resolution does not change.
  • the primary radiator 3 is supported by the motor 30, it can be changed to the radome 40 of the dielectric lens 2 with different characteristics, so that the radar with high resolution and narrow angle detection can be used for long-distance detection. It is possible to configure radar devices with different applications, such as low resolution and wide angle radar devices for short-range detection.
  • FIG. 14 is an external view of a radar apparatus according to a third embodiment of the present invention
  • FIG. 15 is a perspective view of the antenna apparatus portion shown excluding the upper surface of the radome to show the shape of the dielectric lens
  • FIG. 16 is a schematic sectional view showing the internal structure of the radar apparatus of this embodiment.
  • the radar apparatus ⁇ of this embodiment has a circular radome 4 (and a radome 40 ′). And a casing 42 'mounted underneath, and has a structure capable of omnidirectional detection.
  • the dielectric lens 2 integrated with the radome 4 has a ring shape with a central angle of 360 °, and a primary radiator on the central axis M thereof.
  • the ring-shaped dielectric lens 2 is provided with an upper surface portion 40a 'and the radome 4 (is used as the primary radiator 3 by the motor 30. Is rotated 360 ° on the central axis M of the dielectric lens 2. And it is attached to the lower side of the casing 42 'force radome 4 (in a state of being partitioned by the partition plate 41 /.
  • a transmitter 5, a receiver 6, and a detection processing unit 7 are accommodated as in the radar device 4 of the second embodiment.
  • the primary radiator 3 is rotated 360 ° by the motor 30 so that the antenna gain and beam pattern of the electromagnetic beam are the same in all directions, and the electromagnetic beam is narrow in the vertical direction. Turn into a beam.
  • FIG. 17 is a schematic perspective view of an antenna apparatus according to a fourth embodiment of the present invention.
  • the antenna device of this embodiment has a structure in which a force primary radiator having a dielectric lens 2 having a central angle of 180 ° and a primary radiator is fixed and does not rotate. ing.
  • the primary radiator was composed of five radiators 31 to 35 arranged in a radial pattern so as to be arranged along the circumferential direction of the dielectric lens 2.
  • a switch 36 as an electromagnetic beam switching device for transmitting and receiving a transmission signal and a reception signal to any one of the five radiators 31 to 35 is provided in the subsequent stage of the five radiators 31 to 35.
  • the electromagnetic beam B is sequentially emitted from the five radiators 31-35. That is, the electromagnetic beam B radiated from the antenna device 1 can be scanned in the circumferential direction of the dielectric lens 2 by the switching operation of the switch 36.
  • FIG. 18 is a perspective view showing a dielectric lens, which is a main part of the antenna device according to the fifth embodiment of the present invention.
  • This embodiment differs from the first embodiment in that a dielectric lens is a zoung lens.
  • a plurality of, for example, four engravings 21 to 24 were engraved on the outer surface S2 of the dielectric lens 2.
  • the four engravings 21 to 24 are engraved in parallel along the circumferential direction of the dielectric lens 2 so that the antenna gain and beam pattern of the electromagnetic beam during wide-angle scanning of the primary radiator 3 can be reduced. No change occurs.
  • the dielectric lens 2 as a zoom lens, the dielectric lens 2 can be reduced in thickness and cost, and the antenna device can be further reduced in size.
  • the engravings 21 to 24 may be provided on the force inner surface S 1 provided on the outer surface S 2 of the dielectric lens 2.
  • the shape of the zoung is selected so as to satisfy desired antenna characteristics.
  • the present invention is not limited to this, and the antenna to which the dielectric lens having an arbitrary central angle is applied. Devices are included within the scope of this invention.
  • the primary radiator 3, 3 ′ using a horn antenna as the primary radiator has been described as an example.
  • the primary radiator may be configured by a planar patch antenna instead of the horn antenna. good.
  • the convex dielectric lens 2 is used as a shape capable of narrowing the beam.
  • the present invention is not limited to this, and a concave dielectric lens or an aspherical lens type dielectric lens can be used. May be applied.
  • the primary radiator 3 is arranged at or near the focal position f of the dielectric lens 2 to narrow the electromagnetic beam B in the vertical direction. This is for avoiding road surface reflection by the electromagnetic beam B spreading in the vertical direction.
  • the primary radiator 3 is disposed at a position away from the focal position f of the dielectric lens 2, it is possible to avoid road surface reflection and the like. That is, as shown in FIG. 19 (a), by setting the radiation direction of the electromagnetic beam B of the primary radiator 3 upward with respect to the convex cross section S of the dielectric lens 2, the vertical direction As a result, the electromagnetic beam B spreading in the whole direction is directed upward. As a result, the incidence of the electromagnetic beam B on the road surface can be avoided. Furthermore, as shown in FIG.
  • the radar devices 4 and 4 ′ are listed as examples of the device provided with the antenna device 1.
  • the antenna device 1 that includes only the radar device and the transmission that outputs a transmission signal to the antenna device 1 are used.
  • a wireless communication device including a receiver and a receiving unit that receives a reception signal from the antenna device 1 is also a technique within the scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

Ensemble antenne susceptible de rétrécir le faisceau dans la direction verticale sans faire varier le gain d'antenne au moment du balayage grand angle dans la direction horizontale, appareil de communication sans fil et radar. L'ensemble antenne (1) comprend une lentille diélectrique (2) et un émetteur primaire (3). La lentille diélectrique (2) est arquée. L'émetteur primaire (3) peut effectuer un balayage dans la direction circonférentielle de la lentille diélectrique (2) tout en émettant un faisceau électromagnétique, et l'émetteur primaire (3) est agencé au niveau du foyer de la lentille diélectrique (2) ou dans le voisinage de celui-ci. Etant donné que toutes les sections transversales de la lentille diélectrique (2) perpendiculaires à la direction circonférentielle sont définies pour avoir un profil identique, le diagramme du faisceau électromagnétique émis à partir de la lentille diélectrique (2), le gain d'antenne, et similaires, deviennent identiques dans toutes les directions de balayage de l'émetteur primaire (3). Etant donné que l'émetteur primaire (3) est agencé au niveau du foyer de la lentille diélectrique (2) ou dans le voisinage de celui-ci, le faisceau électromagnétique émis à partir de la lentille diélectrique (2) est rendu étroit.
PCT/JP2005/020352 2005-01-17 2005-11-07 Ensemble antenne, appareil de communication sans fil et radar WO2006075437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005008932 2005-01-17
JP2005-008932 2005-01-17

Publications (1)

Publication Number Publication Date
WO2006075437A1 true WO2006075437A1 (fr) 2006-07-20

Family

ID=36677470

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/020352 WO2006075437A1 (fr) 2005-01-17 2005-11-07 Ensemble antenne, appareil de communication sans fil et radar

Country Status (1)

Country Link
WO (1) WO2006075437A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2509112A (en) * 2012-12-20 2014-06-25 Canon Kk Antenna system electromagnetic lens arrangement
JP2014518059A (ja) * 2011-04-28 2014-07-24 アライアント・テクシステムズ・インコーポレーテッド 近接場エネルギーを用いてワイヤレスでエネルギーを伝送するための機器
JP2016029363A (ja) * 2014-07-24 2016-03-03 株式会社ユーシン 無線センシング装置、レーダシステム
US9397407B2 (en) 2012-12-20 2016-07-19 Canon Kabushiki Kaisha Antenna system
CN113381197A (zh) * 2021-05-27 2021-09-10 深圳市信维通信股份有限公司 一种分块式透镜天线及通信设备
CN113381196A (zh) * 2021-05-27 2021-09-10 深圳市信维通信股份有限公司 一种离体式透镜天线及通信设备

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2044006A (en) * 1978-11-23 1980-10-08 Decca Ltd Radar antenna
US5264859A (en) * 1991-11-05 1993-11-23 Hughes Aircraft Company Electronically scanned antenna for collision avoidance radar
JPH09222506A (ja) * 1996-02-12 1997-08-26 Boeing North American Inc レンズ
JP2693497B2 (ja) * 1988-07-22 1997-12-24 株式会社東芝 機械的ビーム走査アンテナ装置
JP2000004118A (ja) * 1998-06-16 2000-01-07 Mitsubishi Electric Corp ミリ波帯アンテナ装置
RU2147150C1 (ru) * 1998-05-26 2000-03-27 16 Центральный научно-исследовательский испытательный институт Министерства обороны Российской Федерации Сканирующая тороидальная линзовая антенна
JP2001127537A (ja) * 1999-10-27 2001-05-11 Mitsubishi Electric Corp レンズアンテナ装置
JP2004056276A (ja) * 2002-07-17 2004-02-19 Alps Electric Co Ltd パッチアンテナ
RU2236073C2 (ru) * 2002-09-11 2004-09-10 16 Центральный научно-исследовательский испытательный институт Министерства обороны Российской Федерации Тороидальная линзовая антенна с электронным сканированием в двух плоскостях

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2044006A (en) * 1978-11-23 1980-10-08 Decca Ltd Radar antenna
JP2693497B2 (ja) * 1988-07-22 1997-12-24 株式会社東芝 機械的ビーム走査アンテナ装置
US5264859A (en) * 1991-11-05 1993-11-23 Hughes Aircraft Company Electronically scanned antenna for collision avoidance radar
JPH09222506A (ja) * 1996-02-12 1997-08-26 Boeing North American Inc レンズ
RU2147150C1 (ru) * 1998-05-26 2000-03-27 16 Центральный научно-исследовательский испытательный институт Министерства обороны Российской Федерации Сканирующая тороидальная линзовая антенна
JP2000004118A (ja) * 1998-06-16 2000-01-07 Mitsubishi Electric Corp ミリ波帯アンテナ装置
JP2001127537A (ja) * 1999-10-27 2001-05-11 Mitsubishi Electric Corp レンズアンテナ装置
JP2004056276A (ja) * 2002-07-17 2004-02-19 Alps Electric Co Ltd パッチアンテナ
RU2236073C2 (ru) * 2002-09-11 2004-09-10 16 Центральный научно-исследовательский испытательный институт Министерства обороны Российской Федерации Тороидальная линзовая антенна с электронным сканированием в двух плоскостях

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014518059A (ja) * 2011-04-28 2014-07-24 アライアント・テクシステムズ・インコーポレーテッド 近接場エネルギーを用いてワイヤレスでエネルギーを伝送するための機器
GB2509112A (en) * 2012-12-20 2014-06-25 Canon Kk Antenna system electromagnetic lens arrangement
GB2509112B (en) * 2012-12-20 2016-07-06 Canon Kk Antenna system
US9397407B2 (en) 2012-12-20 2016-07-19 Canon Kabushiki Kaisha Antenna system
JP2016029363A (ja) * 2014-07-24 2016-03-03 株式会社ユーシン 無線センシング装置、レーダシステム
CN113381197A (zh) * 2021-05-27 2021-09-10 深圳市信维通信股份有限公司 一种分块式透镜天线及通信设备
CN113381196A (zh) * 2021-05-27 2021-09-10 深圳市信维通信股份有限公司 一种离体式透镜天线及通信设备

Similar Documents

Publication Publication Date Title
EP1416584B1 (fr) Antenne à secteurs et appareil à transmission/réception pour un véhicule
US7064726B2 (en) Antenna device and transmitting/receiving device
JP4337876B2 (ja) アンテナ装置およびこれを用いたレーダ装置
US6864852B2 (en) High gain antenna for wireless applications
JP3650952B2 (ja) 誘電体レンズおよびそれを用いた誘電体レンズアンテナおよびそれを用いた無線装置
US20020067314A1 (en) Antenna device, communication apparatus and radar module
JP2004325160A (ja) 車載用レーダ
WO2006075437A1 (fr) Ensemble antenne, appareil de communication sans fil et radar
JP2003240838A (ja) 車両用周辺監視装置
WO1994026001A1 (fr) Systemes d'antennes orientables
US7773042B2 (en) Conical scanning antenna system using nutation method
JPH10293175A (ja) 乗物の衝突回避システム及び衝突回避方法
JP2898862B2 (ja) 誘電体レンズを用いた物体検知センサ
US20020118140A1 (en) Antenna system
JP2007049691A (ja) アンテナモジュールおよび無線装置
GB2559009A (en) A frequency scanned array antenna
JP4337877B2 (ja) アンテナ装置およびこれを用いたレーダ装置
JP3401284B2 (ja) レーダ・通信兼用装置
JPH10253746A (ja) レーダ用空中線装置
JPH06334432A (ja) アンテナ装置
JP2000353914A (ja) アンテナ装置
JP2001077615A (ja) 電波ビーム旋回装置ならびにその利用装置
JP2000114845A (ja) ビーム切り換えアンテナ
JP2004200832A (ja) 同軸線路アンテナ
JP2538745Y2 (ja) 送受信装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 05799888

Country of ref document: EP

Kind code of ref document: A1

WWW Wipo information: withdrawn in national office

Ref document number: 5799888

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP