JP4812824B2 - An antenna having an electromagnetic wave reflector using an omnidirectional dielectric lens device. - Google Patents

Description

  The present invention relates to an antenna having an electromagnetic wave reflector using a dielectric lens that is transparent to electromagnetic waves, and in particular, has omnidirectional characteristics suitable for microwave band, millimeter wave band, and light wave band among electromagnetic waves. The present invention relates to an antenna having an electromagnetic wave reflector using a dielectric lens.

  In general, electromagnetic waves propagating in space include long waves, medium waves, microwaves, millimeter waves, infrared rays, ultraviolet rays, X-rays and gamma rays, and each band is applied in various fields. Among electromagnetic waves, those in the wavelength range of 380 to 760 mm, that is, in the light wave band, human eyes feel brightness as light. Currently, electromagnetic waves from the millimeter wave band to the light wave band have begun to be used in the field of communications.

  Conventionally, in the millimeter wave band used in the communication field, a metal reflector is often used as a reflector for reflecting electromagnetic waves. To use this reflector in the light wave band, a corner cube is used. Therefore, it is required to have a high degree of angle accuracy to form a right angle to the surface and a high surface smoothness to form the surface smoothly. Further, as a dielectric lens having omnidirectionality used in a wavelength band longer than the millimeter wave band, that is, a so-called radio wave band, there is a Luneberg lens formed by adjusting a dielectric constant with foamed polystyrene or the like.

  When a metal reflector is used in the light wave / millimeter wave band, null points appear at both ends within a range of 90 degrees due to the structure. Further, it is impossible to obtain a wide angle characteristic of an effective 80 degrees or more. On the other hand, in the case of a Luneberg lens formed of styrene foam or the like having omnidirectionality, there is a problem that light cannot be reflected. Therefore, the inventors have developed a device using a dielectric lens that can be used in both the millimeter wave band and the light wave band, and further have a function of receiving and reflecting electromagnetic waves using this dielectric lens. A dielectric lens device having the same has been developed and a patent application has already been filed.

  As shown in FIGS. 6 to 7, the dielectric lens device 51 basically includes a spherical dielectric lens 52, a dielectric spherical shell 53 containing the spherical dielectric lens 52, and the dielectric spherical shell. 53 and a spherical dielectric lens 52 are positioned, and a holding mechanism 54 for holding and fixing is provided. The spherical dielectric lens 52 is formed into a spherical shape using a transparent polystyrene resin as a transparent dielectric member having a small dielectric loss, and electromagnetic waves (radio waves and light waves) pass through the spherical dielectric lens 52. It is formed so as to be refracted and converged to the focal point F. Thus, since the spherical dielectric lens 52 is a transparent sphere as a whole, it has omnidirectionality with respect to electromagnetic waves, that is, not only in the radio wave band but also in the light wave band.

  The dielectric spherical shell 53 is formed into a hollow spherical shape using a transparent dielectric member having a small dielectric loss, and further, the radius of the inner spherical surface or outer spherical surface of the dielectric spherical shell 53, that is, The spherical surface of one of the dielectric spherical shells 53 is formed in a spherical shape having a radius equal to the focal length R of the spherical dielectric lens 52. A spherical dielectric lens 52 is disposed in the center of the dielectric spherical shell 53 in a state of being fixed to the holding mechanism 54, and any one spherical surface of the dielectric spherical shell 53 is spherical. It is positioned by the holding mechanism 54 so as to be positioned along the focal length R of the dielectric lens 52.

In this embodiment, as shown in FIG. 6, the holding mechanism 54 uses a transparent dielectric member having a small dielectric loss and cuts a spherical shape that matches the inner diameter of the dielectric spherical shell 53 at the lower end. A concave portion is formed in the central portion of the cut surface to hold the lower end portion of the spherical dielectric lens 52 in a fitted state. The holding mechanism 54 is not limited to this embodiment, and the dielectric sphere is in a state where the spherical dielectric lens 52 is included in the center of the dielectric spherical shell 53 and along the focal length R. Any structure may be used as long as the dielectric spherical shell 53 and the spherical dielectric lens 52 can be positioned and held so that one of the spherical surfaces of the shell 53 is positioned. The reflector 55 that reflects electromagnetic waves is disposed and positioned on either the inner spherical surface or the outer spherical surface of the dielectric spherical shell 53 located at the focal length R of the spherical dielectric lens 52.
Japanese Patent Application No. 2004-239223 (Japanese Patent Laid-Open No. 2006-60452)

  However, what the inventors previously filed relates to a basic invention of a dielectric lens device having omnidirectionality that can be used for electromagnetic waves in the millimeter waveband to the lightwave band. Therefore, such dielectric lens devices can be widely used, that is, development in application fields has been awaited.

The invention according to claim 1 is a spherical dielectric lens that is transparent to electromagnetic waves, a reflector that reflects the electromagnetic waves provided at the focal length of the dielectric lens, and the reflector is used as the focal length of the dielectric lens. In a reflector using a dielectric lens having a holding mechanism for positioning and holding, it is possible to penetrate from the reflecting surface of the reflector to the outside of the reflector, and to attach an electromagnetic wave transmitter / receiver to the outside of the penetrating reflector When a port is provided, the port opening is square, the port is arranged so that the long side of the square of the opening is inclined by 45 ° with respect to the ground, and an electromagnetic wave transmitter / receiver is attached to the port, the port and dielectric An antenna having a reflector using a dielectric lens capable of transmitting and receiving electromagnetic waves via a body lens.

  The invention according to claim 2 is the invention according to claim 1, wherein the dielectric lens is formed in a shape in which a sphere is cut by at least one plane or curved surface instead of being formed in a sphere.

The invention according to claim 3 is the invention according to claim 2, wherein the dielectric lens is formed into a shape obtained by cutting a sphere into two planes or curved surfaces instead of being formed into a spherical shape, and the dielectric lens is cut. those one planar or curved as one cut surface, the other cut planes or curved surfaces of the dielectric lens and the other cut surface, holding mechanism, which has a structure for covering one of the cut surface and the other cut surface It is.

The invention according to claim 4 is the invention according to claim 3, arranged radio wave absorber between the holding mechanism having one cut surface and cover the cut surface of the one, the other cut surface and the other A radio wave absorber is also disposed between the holding mechanism that covers the cut surface portion.

The invention according to claim 5 is the invention according to claims 2 to 3, in which surface treatment was performed for absorbing radio waves at one of the cut surface and the surface of the other cut surface.

The invention according to claim 6 is the invention according to claims 1 to 5 , wherein a plurality of ports are provided on the reflection surface of the reflector.

Since the invention which concerns on Claim 1 was comprised as mentioned above, since the antenna which has the function of an electromagnetic wave reflector can be obtained, space saving and weight reduction can be achieved. Furthermore, since it can also reflect light waves, it can be used as a reflector for visual observation. In addition, the electric field component of the reflected wave transmitted from the port of the device owned by the user (hereinafter referred to as the own device) and reflected by the reflector of the device owned by the other person (hereinafter referred to as the other device), Since the electric field component of the incident wave transmitted from the port of the other device is shifted by 90 °, the incident wave from the other device is reflected by the reflector with almost no attenuation, and the incident wave from the other device incident on the port is the port. Is significantly attenuated at the opening of Therefore, interference with other devices can be prevented, and attenuation at the ports when the electromagnetic waves transmitted from the ports of the other devices are reflected by the reflector can be prevented.

  Since the invention according to claim 2 is configured as described above, in addition to the same effect as that of the invention according to claim 1, further space saving and weight reduction can be achieved. Therefore, it is more suitable to be mounted on a mobile body with limited mounting amount and mounting space.

Since the invention according to claim 3 is configured as described above, the same effect as that of claim 2 is obtained. Further, electromagnetic waves can be prevented from entering the dielectric lens from one of the cut surface and the other cut surface was cut.

Since the invention according to claim 4 is configured as described above, the same effect as the invention according to claim 3 is obtained. Furthermore, the reflected wave at one cut surface and the other cut surface can be greatly attenuated, and the influence of this reflected wave can be greatly suppressed.

Since the invention according to claim 5 is configured as described above, it has the same effect as the invention according to claims 2 to 3 . Furthermore, since the number of parts can be reduced, work processes can be reduced.

Since the invention according to claim 6 is configured as described above, the same effects as the inventions according to claims 1 to 5 are obtained. Furthermore, not only can it be used as a radar antenna for simultaneously monitoring a plurality of directions, but also the number of radar antennas mounted on the moving body can be reduced.

A dielectric lens transparent to an electromagnetic wave formed by cutting a sphere into two planes or curved surfaces, a reflector for reflecting the electromagnetic wave provided at the focal length of the dielectric lens, and the reflector as a dielectric in reflectors with a dielectric lens and a holding mechanism for positioning and holding the focal length of the lens, one that has been cut of the dielectric lens with one cut surface, and the other with the other cut surface, holding mechanism, whereas of the cut surface and the other cut surface of the cover structure, and between the holding mechanism for covering the other of the cut surface and the other of the cutting face between the holding mechanism having one cut surface and cover the cut surface of this one A radio wave absorber is disposed, and a structure that penetrates from the reflecting surface of the reflector to the outside of the reflector, and a port to which an electromagnetic wave transmitter / receiver can be attached to the outside of the penetrating reflector is provided, If the port is arranged so that the long side of the square of the port is inclined at 45 ° with respect to the ground, and the electromagnetic wave transmitter / receiver is attached to the port, the port and the dielectric lens are An antenna having a reflector using a dielectric lens capable of transmitting and receiving electromagnetic waves through the antenna.

An antenna having a reflector using a dielectric lens subjected to surface treatment for absorbing radio waves on the surfaces of one cut surface portion and the other cut surface portion.

  The port is an antenna having a reflector using a plurality of dielectric lenses provided on the reflecting surface of the reflector.

  A first embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a schematic diagram of an antenna having a reflector using a spherical dielectric lens transparent to electromagnetic waves. In the first embodiment, as a transceiver attached to the port 5, a waveguide as a primary radiator and a radar circuit incorporated therein will be described.

  An antenna 1 includes a spherical dielectric lens 2 having a property transparent to electromagnetic waves, a reflector 3 that reflects an electromagnetic wave provided at the focal length of the dielectric lens 2, and the reflector 3 as a dielectric lens 2. The holding mechanism 4 is positioned and held at a focal length of 5 mm and the port 5 is disposed on the reflecting surface of the reflector 3 and can be mounted with a waveguide (not shown) as a primary radiator.

  The dielectric lens 2 is formed into a spherical shape using a transparent polystyrene resin as a transparent dielectric member with a small dielectric loss, and is refracted when an electromagnetic wave (radio wave and light wave) passes through it, and the focal point F It is formed to converge. Thus, since the spherical dielectric lens 2 is entirely transparent, it has omnidirectionality with respect to electromagnetic waves, that is, not only in the radio wave band but also in the light wave band. In Example 1, a spherical dielectric lens was formed using a dielectric member having a relative dielectric constant of 3.5 or less as the dielectric member of the spherical dielectric lens.

  As shown in FIG. 1, the reflector 3 is disposed along a spherical surface having a diameter equal to the focal length R of the dielectric lens 2, and is positioned and held by the holding mechanism 4. The reflector 3 can reflect electromagnetic waves, that is, radio waves and light waves. For example, when the reflector 3 is used for the purpose of reflecting light waves, a color wave is provided on the reflecting surface of the reflector 3 to add color. May be reflected.

  In this embodiment, the holding mechanism 4 fixes the top and bottom of the dielectric lens 2 as shown in FIG. 1, and the reflector 3 is positioned along a spherical surface having a diameter equal to the focal length R of the dielectric lens 2. Thus, the structure is positioned and held. Note that the holding mechanism 4 is not limited to this embodiment, and the dielectric lens 2, the reflector 3, and the like so that the reflecting surface of the reflector 3 is positioned along the focal length R of the dielectric lens 2. Any structure may be used as long as the structure can be positioned and held.

  The port 5 is provided with an opening of the port 5 on the surface of the reflecting surface of the reflector 3, and has a structure that penetrates the reflector 3 and the holding mechanism 4 from the opening. A waveguide (not shown) can be attached to the opening provided in the holding mechanism 4 on the opposite side of the opening on the reflecting surface of the reflector 3. By using this waveguide as a primary radiator and further incorporating a radar circuit (not shown) in this waveguide, a radar having a reflector for electromagnetic waves can be obtained.

  The opening of the port 5 is formed in the same shape as the cross section of the waveguide attached to the port 5. In this embodiment, the waveguide connected to the port 5 is a rectangular waveguide having a square cross section. Furthermore, as a waveguide connected to the port 5, the frequency of electromagnetic waves transmitted and received at the port 5 is equal to or higher than the cutoff frequency of the waveguide, and the length of the short side of the cross section of the waveguide is long. The waveguide is selected so that the frequency is sufficiently lower than the cutoff frequency of the waveguide in the case of the side. In other words, a waveguide that is not received when the electric field component of the electromagnetic wave transmitted and received at the port 5 is shifted by 90 ° is selected.

  In this embodiment, a waveguide is used as the primary radiator. However, the present invention is not limited to this embodiment, and any waveguide can be used as long as it can be used as the primary radiator.

  Since it is formed in this way, it can be used as an antenna including a reflector for electromagnetic waves. For example, if a waveguide is attached to the port 5 and a radar circuit is incorporated in the waveguide, the radar can be used as a radar having a reflector for electromagnetic waves using the waveguide as a primary radiator.

  Next, the operation will be described in detail with reference to FIG.

  A description will be given of a case where a waveguide is attached to the port 5 of the antenna 1, and a radar circuit is incorporated in the waveguide, and the waveguide is used as a radar having a primary radiator. . Next, the operation of this radar when mounted on a moving body such as a vehicle will be described below.

  As described above, a waveguide (not shown) is attached to the port 5 of the antenna 1, and a radar circuit (not shown) is incorporated in the waveguide. In this embodiment, a millimeter wave band is used as a frequency band of a radar having this waveguide as a primary radiator.

  When the moving body on which the radar is mounted is a vehicle, one or a plurality of radars are installed at an appropriate place on the vehicle. The installation location is, for example, in a vehicle headlamp structure or its adjacent part, in a tail lamp structure or its adjacent part, in a fender mirror or door mirror structure or its adjacent part. Etc.

  In this embodiment, the radar is installed not only on one's own vehicle (hereinafter referred to as the own vehicle) but also on one or more other vehicles (hereinafter referred to as other vehicles).

  When the antenna 1 of this embodiment is used not only as a radar but also as a light wave reflector, a color filter (not shown) may be disposed on the reflecting surface of the reflector 3 as necessary. . For example, when the antenna 1 is installed in the structure of the tail lamp and is also used as a light wave reflector, a red color filter that matches the color of the tail lamp is disposed on the reflection surface of the reflector 3. With this configuration, the light wave reflected by the reflecting surface of the reflector 3 of the antenna 1 installed in the tail lamp structure is given a red color, so that the red reflected light can be visually recognized. I can do it.

  A second embodiment of the present invention will be described in detail with reference to FIG. FIG. 2 shows a schematic diagram of an antenna having a reflector using a dielectric lens. In addition, the same thing as Example 1 attaches | subjects the same name and the same number, and abbreviate | omits the description.

  The antenna 11 includes a dielectric lens 12 having a property transparent to electromagnetic waves similar to that of the first embodiment, a reflector 13 that reflects the electromagnetic waves provided at the focal length of the dielectric lens 12, and the reflector 13 The holding mechanism 14 is positioned and held at the focal length of the dielectric lens 12, and the port 5 is disposed on the reflecting surface of the reflector 13 and can be attached with a waveguide (not shown) as a primary radiator. ing.

In the case of the second embodiment, the dielectric lens 12 uses the same member as that of the first embodiment as the dielectric member, and the property against electromagnetic waves is the same as that of the first embodiment. In the first embodiment, the shape of the dielectric lens 12 is a case where the dielectric lens is formed in a spherical shape, but in the case of the second embodiment, the sphere is cut into two planes or curved surfaces. . In particular, in the second embodiment, that is, as shown in FIG. 2, the upper and lower directions of this plane are cut in parallel to the plane including the center point of the sphere. Thus, since the structure obtained by cutting the vertical spherical dielectric lens, cutting the vertical direction, i.e., the other of the cut is downward, which is one of the cut surface 12a and the cut is a direction after being cut Omnidirectionality with respect to the electromagnetic waves in the vertical direction incident from the surface portion 12b is lost. However, horizontal omnidirectionality is not lost. By cutting the vertical direction parallel to the plane including the center point of the spherical dielectric lens, space saving and weight reduction are achieved, and it is more suitable for mounting on a moving body with limited mounting amount and mounting space. Yes.

  As shown in FIG. 2, the reflector 13 is disposed along a spherical surface having a diameter equal to the focal length R of the dielectric lens 12, and is positioned and held by the holding mechanism 14 as in the reflector 3 of the first embodiment. .

In this embodiment, the holding mechanism 14 fixes the upper and lower sides of the dielectric lens 12, that is, the one cut surface portion 12a and the other cut surface portion 12b, and the focal length R of the dielectric lens 12 as shown in FIG. The reflector 3 is positioned and held so that the reflector 3 is positioned along a spherical surface having the same diameter as, and covers the electromagnetic lens from being incident on the dielectric lens 2 from one cut surface portion 12a and the other cut surface portion 12b. .

  A third embodiment of the present invention will be described in detail with reference to FIG. FIG. 3 shows a schematic diagram of an antenna having a reflector using a dielectric lens. The third embodiment has substantially the same shape as that of the second embodiment, and the port provided on the reflecting surface of the reflector is inclined by 45 °. In addition, the same thing as Example 1 and Example 2 attaches | subjects the same name and the same number, and abbreviate | omits the description.

  The antenna 21 includes a dielectric lens 12, a reflector 23 that reflects an electromagnetic wave provided at the focal length of the dielectric lens 12, and a holding mechanism 24 that positions and holds the reflector 23 at the focal length of the dielectric lens 12. The port 5 is disposed on the reflection surface of the reflector 23 and can be attached with a waveguide (not shown) as a primary radiator.

In the case of the third embodiment, the port 5 is installed on the vehicle to be mounted so that the long side of the opening is inclined 45 ° from the state parallel to the ground. By installing the port 5 at an angle of 45 ° in this way, interference with other vehicles can be prevented, and attenuation at the port 5 when the electromagnetic wave transmitted from the port of the other vehicle is reflected by the reflector 3 can be prevented. is there. That is, if there is interference as it is, for example, if an incident wave from another vehicle is focused on the port 5, as shown in FIG. 3, it is transmitted from the port of the own vehicle and reflected by the reflector of the other vehicle. Since the electric field component _Er of the reflected wave and the electric field component E _of the incident wave transmitted from the port _of the other vehicle are shifted by 90 °, the incident wave from the other vehicle is reflected by the reflector 13 with almost no attenuation. The incident wave from the other vehicle incident on the port 5 is greatly attenuated at the opening of the port 5.

  A fourth embodiment of the present invention will be described in detail with reference to FIG. FIG. 4 shows a schematic diagram of an antenna having a reflector using a dielectric lens. The fourth embodiment is a case where a radio wave absorber is installed on the upper surface portion and the lower surface portion of the dielectric lens in substantially the same shape as the second and third embodiments. In addition, the same thing as Example 1- Example 3 attaches | subjects the same name and the same number, and abbreviate | omits the description.

The antenna 31 includes a dielectric lens 12, a reflector 23 that reflects an electromagnetic wave provided at the focal length of the dielectric lens 12, and a holding mechanism 34 that positions and holds the reflector 23 at the focal length of the dielectric lens 12. The port 5 is disposed on the reflecting surface of the reflector 23 and can be attached with a waveguide (not shown) as a primary radiator, and on one cut surface portion 12a and the other cut surface portion 12b of the dielectric lens 12. And a radio wave absorber 36 disposed in the.

In the case of the fourth embodiment, one cut surface portion 12a and the other cut surface portion 12b of the dielectric lens 12 are covered with a radio wave absorber 36, and the radio wave absorber 36a is formed between the one cut surface portion 12a and the holding mechanism 34a. In the meantime, the radio wave absorber 36b is disposed between the other cut surface portion 12b and the holding mechanism 34b.

As described above, since the dielectric lens 12 has a structure in which the vertical direction of the sphere is cut, the reflected wave may interfere with one cut surface portion 12a and the other cut surface portion 12b. Therefore, by covering the one cut surface portion 12a and the other cut surface portion 12b with the radio wave absorber 36, the reflected waves at the one cut surface portion 12a and the other cut surface portion 12b are greatly attenuated, and the influence of the reflected waves is greatly increased. Can be suppressed.

In the case of the fourth embodiment, the radio wave absorber 36 uses a carbon-based radio wave absorber. However, the radio wave absorber 36 is not limited to this embodiment and absorbs electromagnetic waves in the frequency band to be used. Anything can be used as long as it can be used. Also, instead of using the radio wave absorber may be subjected to surface treatment so as to absorb radio waves, such as carving a groove 1/4 to 1/8 wavelength in one of the cut surface 12a and the other cut surface 12b .

  A fifth embodiment of the present invention will be described in detail with reference to FIG. FIG. 5 shows a schematic diagram of an antenna having a reflector using a dielectric lens. In the fifth embodiment, the shape of the dielectric lens is substantially the same as that of the second to fourth embodiments, and a plurality of ports are provided on the reflecting surface of the reflector. In addition, the same thing as Example 1- Example 4 attaches | subjects the same name and the same number, and abbreviate | omits the description.

The antenna 41 includes a dielectric lens 12, a reflector 43 that reflects electromagnetic waves provided at the focal length of the dielectric lens 12, and a holding mechanism 44 that positions and holds the reflector 43 at the focal length of the dielectric lens 12. A plurality of ports 5 (5a to 5e) which are disposed on the reflecting surface of the reflector 43 and can be attached with a waveguide (not shown) as a primary radiator, and one cut surface portion 12a of the dielectric lens 12 And a radio wave absorber 36 disposed on the other cut surface portion 12b.

  In the case of the fifth embodiment, as shown in FIG. 5, five ports 5 are arranged on the reflector 43 and can radiate electromagnetic waves simultaneously in each direction independently. In the case of the fifth embodiment, five ports 5 are arranged on the reflector 43, but the present invention is not limited to this embodiment, and a necessary number of ports can be arranged.

  Thus, by providing a plurality of ports, not only can it be used as a radar that simultaneously monitors a plurality of directions, but also the number of radars that need to be mounted on the moving body can be reduced.

  As described in the second embodiment and below, when it is desired to cover a vertical direction that does not have omnidirectionality, or when it is desired to use it in a plurality of directions as in the fifth embodiment, an antenna is employed in the radar. You may make it scan with various scanning methods, such as the helical and jitter.

  An antenna having a reflector using a dielectric lens has both a function as a reflector and a function as an antenna. Therefore, the antenna can be reduced in size and weight, and is more suitable for mounting on a moving body with limited mounting amount and mounting space. ing. A waveguide is attached to the antenna of the present invention, and a radar circuit is further incorporated for use as a radar mounted on a moving body. In addition, since a plurality of ports can be arranged, it can be used not only as a radar antenna for monitoring a plurality of directions at the same time, but also suitable for suppressing the number of radar antennas mounted on a moving body. Since the reflector can also reflect light waves, it can be used as a reflector for visual observation of a moving object, for example, by placing a red color filter on the reflecting surface of the reflector and installing it on the tail lamp of a vehicle. .

1 is a schematic diagram of an antenna having a reflector using a spherical dielectric lens, showing a first embodiment of the present invention. FIG. The 2nd Example of this invention is shown and it is a schematic diagram of the antenna which has a reflector using a dielectric lens. FIG. 6 is a schematic diagram of an antenna having a reflector using a dielectric lens, showing a third embodiment of the present invention. 10 is a schematic diagram of an antenna having a reflector using a dielectric lens, showing a fourth embodiment of the present invention. FIG. FIG. 10 is a schematic diagram of an antenna having a reflector using a dielectric lens, showing a fifth embodiment of the present invention. It shows a conventional example and is a schematic diagram of a reflection device using a dielectric lens device previously patented by the inventors. FIG. 9 is a diagram illustrating a conventional example, and is an explanatory diagram illustrating a positional relationship between a spherical dielectric lens 52 and a dielectric spherical shell 53 previously filed by the inventors.

Explanation of symbols

1, 11, 21, 31, 41 Antenna 2, 12 Dielectric lens 12a One cut surface portion 12b The other cut surface portion 3, 13, 23, 43 Reflector 4, 14, 24, 34, 44 Holding mechanism 5 (5a to 5a) 5e) Port 36 electromagnetic wave absorber

Claims (6)

A spherical dielectric lens transparent to electromagnetic waves,
A reflector that reflects electromagnetic waves provided at the focal length of the dielectric lens;
In a reflector using a dielectric lens having a holding mechanism for positioning and holding the reflector at the focal length of the dielectric lens,
A port penetrating from the reflecting surface of the reflector to the outside of the reflector, and an electromagnetic wave transceiver can be attached to the outside of the penetrating reflector,
The opening of the port is square, and the port is arranged so that the long side of the square of the opening is inclined by 45 ° with respect to the ground,
An antenna having a reflector using a dielectric lens, wherein when an electromagnetic wave transceiver is attached to the port, electromagnetic waves can be transmitted and received through the port and the dielectric lens. The antenna having a reflector using a dielectric lens according to claim 1, wherein the dielectric lens is formed into a shape in which a sphere is cut by at least one plane or curved surface, instead of being formed into a sphere. . Instead of forming the dielectric lens into a spherical shape, the dielectric lens is formed into a shape obtained by cutting a sphere into two planes or curved surfaces,
One of the cut plane or curved surface of the dielectric lens is one cut surface portion,
The other of the cut plane or curved surface of the dielectric lens is the other cut surface,
The antenna having a reflector using a dielectric lens according to claim 1 , wherein the holding mechanism is configured to cover the one cut surface portion and the other cut surface portion. The wave absorber is arranged between the holding mechanism to cover the cut surface of the one and the one cut surface,
Antenna having a reflector with a dielectric lens according to claim 3, characterized in that placing the radio wave absorber between the holding mechanism to cover the cut surface of the other and the other cut surface. 4. The antenna having a reflector using a dielectric lens according to claim 2, wherein surface treatment of absorbing radio waves is performed on surfaces of the one cut surface portion and the other cut surface portion. 5. The antenna having a reflector using a dielectric lens according to claim 1, wherein a plurality of the ports are provided on a reflection surface of the reflector.

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