CN114421178B - Luneberg lens antenna and phased array antenna array - Google Patents
Luneberg lens antenna and phased array antenna array Download PDFInfo
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- CN114421178B CN114421178B CN202210336470.XA CN202210336470A CN114421178B CN 114421178 B CN114421178 B CN 114421178B CN 202210336470 A CN202210336470 A CN 202210336470A CN 114421178 B CN114421178 B CN 114421178B
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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
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
- H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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Abstract
The present application relates to a luneberg lens antenna and a phased array antenna array. The luneberg lens antenna comprises a luneberg lens part and a feed source part; the feed source part is provided with an antenna feed source, the antenna feed source is used for radiating electromagnetic signals to the Luneberg lens part, and the Luneberg lens part is used for transmitting the electromagnetic signals to form antenna beams; the luneberg lens part is in a circular plate shape and comprises a first lens area close to the circle center and a second lens area far away from the circle center, through holes are formed in the first lens area and the second lens area along the radius direction, the density of the through holes in the first lens area is a first density, and the density of the through holes in the second lens area is gradually increased to a second density along the first direction; wherein the second density is less than or equal to the first density; the first direction is a direction from the edge of the luneberg lens portion to the center, and the area of the first lens region is related to an antenna beam width design value and an antenna gain design value. The luneberg lens antenna has a wide antenna beam width.
Description
Technical Field
The present application relates to the field of antenna technology, and in particular, to a luneberg lens antenna and a phased array antenna array.
Background
The luneberg lens antenna has the characteristics of high gain, multiple beams and beam consistency, and can be generally applied to an accurate multi-target tracking system. In practice, a multi-target tracking system may require wide-beam tracking.
Therefore, it is an urgent problem to improve the beam width of the luneberg lens antenna to satisfy the requirement of wide beam tracking.
Disclosure of Invention
In view of the above, it is desirable to provide a luneberg lens antenna and a phased array antenna array capable of increasing the beam width of the luneberg lens antenna.
In a first aspect, the present application provides a luneberg lens antenna. The luneberg lens antenna comprises a luneberg lens part and a feed source part; the feed source part is provided with an antenna feed source, the antenna feed source is used for radiating electromagnetic signals to the Luneberg lens part, and the Luneberg lens part is used for transmitting the electromagnetic signals to form antenna beams;
the luneberg lens part is in a circular plate shape and comprises a first lens area close to the circle center and a second lens area far away from the circle center, through holes are formed in the first lens area and the second lens area along the radius direction, the density of the through holes in the first lens area is a first density, and the density of the through holes in the second lens area is gradually increased to a second density along the first direction;
wherein the second density is less than or equal to the first density; the first direction is a direction from the edge of the luneberg lens portion to the center, and the area of the first lens region is related to an antenna beam width design value and an antenna gain design value.
In one embodiment, the luneberg lens antenna comprises a first dielectric plate and a second dielectric plate, wherein the first dielectric plate and the second dielectric plate are both composed of a luneberg lens plate and a feed plate, and the luneberg lens plate is circular;
the luneberg lens part consists of a luneberg lens plate in the first dielectric plate and the second dielectric plate;
the feed source part is composed of feed source plates in a first medium plate and a second medium plate.
In one embodiment, the first dielectric plate and the second dielectric plate are connected through a connecting piece, wherein the connecting piece located at the luneberg lens plate is made of nonmetal materials, and the connecting piece located at the feed plate is made of metal materials.
In one embodiment, the luneberg lens plate comprises a first plate region near the center of a circle and a second plate region far from the center of a circle;
the first plate area and the second plate area are both provided with through holes along the radius direction, the density of the through holes in the first plate area is a first density, and the density of the through holes in the second plate area gradually increases to a second density along the first direction.
In one embodiment, the antenna feed is arranged on one side of the first dielectric plate facing the second dielectric plate.
In one embodiment, the luneberg lens antenna further comprises a feed unit connected to the antenna feed;
and the feed unit is arranged on the first dielectric plate and used for feeding the antenna feed source.
In one embodiment, the feed unit comprises a feed line and a connector which are connected with each other, the feed line is arranged on one side of the first dielectric plate, which is far away from the second dielectric plate, and the connector is arranged at the edge position of the first dielectric plate;
and the connector is used for being connected with the external feeding circuit and feeding the electric signal output by the external feeding circuit to the antenna feed source through the feeder line.
In one embodiment, the luneberg lens antenna further includes a reflection plate disposed at an edge of the feed plate in the first dielectric plate, and the reflection plate is configured to reflect an electromagnetic signal radiated by the antenna feed.
In one embodiment, the reflector plate is provided with a connector hole, and one end of the connector is positioned in the connector hole.
In one embodiment, the luneberg lens antenna is provided with a plurality of antenna feeds, the arrangement position of each antenna feed corresponds to the focal point of the luneberg lens part, and the number of the antenna feeds is related to the design value of the beam width of the antenna.
In one embodiment, the size of the luneberg lens portion is related to the antenna gain design value.
In a second aspect, the present application also provides a phased array antenna array. The phased array antenna array comprising a plurality of luneberg lens antennas as described above in relation to any one of the first aspects.
The embodiment of the application provides a luneberg lens antenna and a phased array antenna array, wherein the luneberg lens antenna comprises a luneberg lens part and a feed source part; the feed source part is provided with an antenna feed source, the antenna feed source is used for radiating electromagnetic signals to the Luneberg lens part, and the Luneberg lens part is used for transmitting the electromagnetic signals to form antenna beams; the luneberg lens part is in a circular plate shape and comprises a first lens area close to the circle center and a second lens area far away from the circle center, through holes are formed in the first lens area and the second lens area along the radius direction, the density of the through holes in the first lens area is a first density, and the density of the through holes in the second lens area gradually increases to a second density along the first direction; wherein the second density is less than or equal to the first density; the first direction is a direction from the edge of the luneberg lens portion to the center, and the area of the first lens region is correlated with the antenna beam width design value and the antenna gain design value. In this embodiment, the area of the first lens region of the luneberg lens antenna is determined based on the antenna beam width design value and the antenna gain design value, that is, the area of the first lens region of the luneberg lens antenna is adjusted in combination with the antenna beam width requirement of the luneberg lens, and when the antenna beam width design value is increased, the area of the first lens region of the luneberg lens antenna is increased to enlarge the central focal range of the whole luneberg lens antenna, so that the electromagnetic signal is scattered in the central focal range to form a flattened beam at the top, and further, the beam width radiated by the luneberg lens antenna is increased. In addition, because the luneberg lens part of the luneberg lens antenna is designed to be a circular plate, compared with a spherical structure in the prior art, the size of the luneberg lens antenna is greatly reduced.
Drawings
FIG. 1 is a schematic three-dimensional structure diagram of an embodiment of a Luneberg lens antenna;
FIG. 2 is a schematic diagram illustrating a top view of a Luneberg lens antenna in accordance with one embodiment;
FIG. 3 is a schematic three-dimensional structure diagram of another embodiment of a Luneberg lens antenna;
FIG. 4 is an exploded view of another embodiment of a three-dimensional structure of a Luneberg lens antenna;
fig. 5 shows the result of a luneberg lens antenna in one embodiment.
Description of reference numerals:
10. a Luneberg lens section; 20. A feed source part; 201. An antenna feed source;
101. a first lens region; 102. A second lens region; 103. A through hole;
30. a first dielectric plate; 40. A second dielectric plate; 300. A luneberg lens plate;
400. a feed plate; 50. A connecting member; 3010. A first plate region;
3020. a second plate region; 202. A power feeding unit; 2021. A feeder line;
2022. a connector; 60. A reflective plate; 601. A connector bore.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Fig. 1 is a schematic three-dimensional structure diagram of a luneberg lens antenna according to an embodiment of the present disclosure; fig. 2 is a schematic structural diagram of a top view of a luneberg lens antenna according to an embodiment of the present application. As shown in fig. 1 and 2, the luneberg lens antenna includes a luneberg lens section 10 and a feed section 20; the feed section 20 is provided with an antenna feed 201, the antenna feed 201 is used for radiating electromagnetic signals to the luneberg lens section 10, and the luneberg lens section 10 is used for transmitting the electromagnetic signals to form an antenna beam.
The luneberg lens part 10 is in a circular plate shape, the luneberg lens part 10 includes a first lens region 101 close to the center of a circle and a second lens region 102 far away from the center of a circle, the first lens region 101 and the second lens region 102 are both provided with through holes 103 along the radial direction, the density of the through holes 103 in the first lens region 101 is a first density, and the density of the through holes in the second lens region 102 gradually increases to a second density along the first direction.
Wherein the second density is less than or equal to the first density; the first direction is a direction from the edge of the luneberg lens portion 10 to the center, and the area of the first lens region 101 is related to the antenna beam width design value and the antenna gain design value.
Alternatively, the feed section 20 may be disposed outside the luneberg lens section 10 or embedded in the luneberg lens section 10. When the feed section 20 is disposed outside the luneberg lens 10, the feed section 20 may be disposed at a position of one side edge of the luneberg lens 10.
The antenna feed 201 may be a horn-type aperture feed antenna, a microstrip patch-type feed antenna, or other types of feed antennas.
In a specific implementation, the luneberg lens portion 10 may be a cylindrical plate formed integrally or a cylindrical plate assembled by a plurality of concentric circular dielectric plates. In order to greatly reduce the weight of the luneberg lens, the thickness of the luneberg lens portion 10 can be reduced. The thickness of the entire luneberg lens part 10 may be set to 1mm to 4 mm.
Alternatively, the first density and the second density are related to the dielectric constant of the luneberg lens portion 10. In general, the dielectric constant of the luneberg lens portion 10 ranges from 1 to 2. Specifically, the dielectric constant at each position in the first lens region 101 is 2. The dielectric constant of the second lens region 102 gradually changes from 1 to a target dielectric constant along the first direction, the target dielectric constant is less than or equal to 2, and the target dielectric constant is greater than 1. The via density of the vias 103 in the luneberg lens portion 10 can be determined based on the dielectric constant setting requirements of the first lens region 101 and the second lens region 102. Wherein the first density is a via density corresponding to a dielectric constant of 2. The second density is a corresponding via density at the target dielectric constant. The greater the dielectric constant, the greater the via density.
Alternatively, the shape of the through hole 103 of the luneberg lens portion 10 may be circular or elliptical, or may be quadrilateral, or the like. The size of the through holes 103 at different positions may be the same or different.
Optionally, the antenna beam width design value is an antenna beam width design value K corresponding to an antenna beam formed by radiating an electromagnetic signal to the luneberg lens portion 10 by the single antenna feed 201 1 。
In a specific implementation, in order to improve the beam width of the luneberg lens antenna, antenna simulation is performed by combining an antenna beam width design value of the luneberg lens antenna and an antenna gain design value of the luneberg lens antenna, and according to an experimental result of the antenna simulation, the area of the first lens region 101 is determined under the condition that the antenna beam width design value and the luneberg antenna gain design value of the luneberg lens antenna are ensured. In general, the larger the antenna beam width design value, the larger the area of the first lens region 101.
In this embodiment, the luneberg lens antenna includes a luneberg lens portion and a feed source portion; the feed source part is provided with an antenna feed source, the antenna feed source is used for radiating electromagnetic signals to the Luneberg lens part, and the Luneberg lens part is used for transmitting the electromagnetic signals to form antenna beams; the luneberg lens part is in a circular plate shape and comprises a first lens area close to the circle center and a second lens area far away from the circle center, through holes are formed in the first lens area and the second lens area along the radius direction, the density of the through holes in the first lens area is a first density, and the density of the through holes in the second lens area is gradually increased to a second density along the first direction; wherein the second density is less than or equal to the first density; the first direction is a direction from the edge of the luneberg lens portion to the center, and the area of the first lens region is related to an antenna beam width design value and an antenna gain design value. In this embodiment, the area of the first lens region of the luneberg lens antenna is determined based on the antenna beam width design value and the antenna gain design value, that is, the area of the first lens region of the luneberg lens antenna is adjusted according to the antenna beam width requirement of the luneberg lens, and when the antenna beam width design value is increased, the area of the first lens region of the luneberg lens antenna is increased to enlarge the central focal range of the whole luneberg lens antenna, and the electromagnetic signal is scattered in the central focal range to form a flattened beam on the top, so that the beam width radiated by the luneberg lens antenna is increased. In addition, because the luneberg lens portion of the luneberg lens antenna is designed to be a circular plate, compared with a spherical structure in the prior art, the size of the luneberg lens antenna is greatly reduced.
Fig. 3 is a schematic three-dimensional structure diagram of a luneberg lens antenna according to another embodiment of the present application. Fig. 4 is an exploded view of a three-dimensional structure of a luneberg lens antenna according to another embodiment of the present application. The luneberg lens antenna comprises a first dielectric plate 30 and a second dielectric plate 40, wherein the first dielectric plate 30 and the second dielectric plate 40 are both composed of a luneberg lens plate 300 and a feed source plate 400, and the luneberg lens plate 300 is circular.
The luneberg lens portion 10 is composed of a luneberg lens plate 300 of the first dielectric plate 30 and the second dielectric plate 40; the feed section 20 is composed of the feed board 400 in the first dielectric board 30 and the second dielectric board 40.
Alternatively, the first dielectric sheet 30 and the second dielectric sheet 40 are the same in size and shape.
Alternatively, the feed plate 400 is disposed at one side edge of the luneberg lens plate 300. The shape of the feed source board 400 may be circular arc, or irregular polygonal, and is not particularly limited. Only one of which is shown in fig. 3 by way of example.
In this embodiment, the luneberg lens antenna includes a first dielectric plate and a second dielectric plate, both the first dielectric plate and the second dielectric plate are composed of a luneberg lens plate and a feed plate, and the luneberg lens portion is composed of the luneberg lens plates in the first dielectric plate and the second dielectric plate; the feed source part is composed of feed source plates in a first medium plate and a second medium plate. In the embodiment, the luneberg lens antenna can be formed only by the first dielectric plate and the second dielectric plate, so that the composition structure of the luneberg lens antenna is greatly reduced. The luneberg lens antenna has a simple structure and is light in weight.
Further, the first dielectric plate 30 and the second dielectric plate 40 are connected by a connecting member 50, wherein the connecting member 50 at the position of the luneberg lens plate 300 is made of a non-metal material, and the connecting member 50 at the position of the feed plate 400 is made of a metal material.
Alternatively, the connecting member 50 is a screw or a bolt. Specifically, the connector 50 at the luneberg lens plate 300 is a nylon screw, and the connector 50 at the feed plate 400 is a metal screw.
In this embodiment, the first dielectric plate and the second dielectric plate are connected by a connecting member, the connecting member located at the luneberg lens plate is made of a non-metal material, and the connecting member located at the feed plate is made of a metal material. The connecting piece at the luneberg lens plate is made of non-metal materials, so that the interference on electromagnetic signals is reduced; meanwhile, the connecting piece arranged at the feed plate is made of metal, so that the stability of the luneberg lens antenna is ensured.
On the basis of the above embodiment, as shown in fig. 4, the luneberg lens plate 300 includes a first plate region 3010 near the center of the circle and a second plate region 3020 far from the center of the circle. The first board area 3010 and the second board area 3020 are both provided with through holes along the radial direction, and the density of the through holes in the first board area 3010 is a first density, and the density of the through holes in the second board area 3020 gradually increases to a second density along the first direction.
With continued reference to fig. 4, in this embodiment, the antenna feed 201 is disposed on a side of the first dielectric plate 30 facing the second dielectric plate 40.
Optionally, the antenna feed 201 is a microstrip patch type feed antenna.
Further, the luneberg lens antenna further includes a feeding unit 202 connected to the antenna feed 201; and a feeding unit 202 disposed on the first dielectric plate 30 and used for feeding power to the antenna feed 201.
Specifically, the feeding unit 202 includes a feeding line 2021 and a connector 2022, which are connected to each other, the feeding line 2021 is disposed on a side of the first dielectric plate 30 away from the second dielectric plate 40, and the connector 2022 is disposed at an edge position of the first dielectric plate 30. A connector 2022 for connecting with an external feeding circuit and for feeding an electric signal output from the external feeding circuit to the antenna feed 201 through the feed line 2021.
Optionally, the feed line 2021 is a microstrip line. The connector 2022 may be a coaxial connector. Specifically, the coaxial connector may be one of SMA, SMB, BNC, SMC, N-type, BMA, etc.
In this embodiment, the feeding unit is provided in the first dielectric plate of the luneberg lens antenna, so that feeding to the antenna feed source is realized.
Please refer to fig. 3 and fig. 4. Based on the above embodiment, the luneberg lens antenna further includes a reflection plate 60, the reflection plate 60 is disposed at the edge of the feed plate 400 in the first dielectric plate 30, and the reflection plate 60 is used for reflecting the electromagnetic signal radiated by the antenna feed 201.
Alternatively, the reflection plate 60 may have an arc shape. The reflective plate 60 may be made of metal. The reflector plate 60 surrounds the edge of the feed plate 400, and the range of the feed plate 400 surrounding the reflector plate includes the area where the antenna feed 201 is located on the feed plate 400.
In the embodiment, the reflecting plate is arranged for reflecting the electromagnetic signals radiated by the antenna feed source, the back lobe of the antenna directional diagram is small, and the gain of the antenna is improved.
Further, as shown in fig. 4, the reflection plate 60 is provided with a connector hole 601, and one end of the connector 2022 is located in the connector hole 601.
Alternatively, one end of the connector 2022 is located in the connector hole 601 to be connected to the first dielectric plate 30. The other end of the connector 2022 is located outside the connector hole 601. The size of the connector hole 601 is not smaller than the size of the end of the connector 2022 located inside the connector hole 601 and not larger than the size of the end of the connector 2022 located outside the connector hole 601.
In this embodiment, the connector holes are provided to connect the connector and the feed plate.
Please refer to fig. 3 and fig. 4. In this embodiment, the luneberg lens antenna is provided with a plurality of antenna feeds 201, the setting position of each antenna feed 201 corresponds to the focal point of the luneberg lens portion 10, and the number of the antenna feeds 201 is related to the antenna beam width design value.
Optionally, when the luneberg lens antenna includes a plurality of antenna feeds 201, the connector 2022 of the luneberg lens antenna may be connected to a matrix switch controller, and the matrix switch controller is configured to control the antenna feeds 201 in each luneberg lens antenna to transmit electromagnetic signals in sequence according to a preset switch switching sequence, so as to implement a scan in a pitch direction of the phased array antenna array.
Wherein the antenna beam width design value comprises a total antenna beam width design value K corresponding to the Luneberg lens antenna 2 Design value of total antenna beam width K 2 The scanning range is a corresponding scanning range when the plurality of antenna feeds 201 transmit electromagnetic signals in sequence to realize the scanning of the elevation direction of the phased array antenna array.
Optionally, the plurality of antenna feeds 201 are symmetrically distributed, and distances between adjacent antenna feeds 201 are the same.
In specific implementation, the antenna beam width design value K corresponding to the antenna beam formed by radiating the electromagnetic signal to the luneberg lens portion 10 by the single antenna feed 201 is determined 1 And a total antenna beam width design value K 2 Then, the number N of the antenna feeds 201 can be obtained through antenna simulation. Specifically, the number N of the antenna feed sources 201 is more than or equal to K 2 /K 1 。
Further, the size of the luneberg lens portion 10 is related to the antenna gain design value.
In a specific implementation, when designing a luneberg lens antenna, an antenna simulation experiment is performed according to an antenna gain design value, which is an actual parameter of the luneberg lens antenna, to determine the size of the luneberg lens portion 10. In general, the larger the antenna gain design value, the larger the size of the luneberg lens portion 10.
Fig. 5 shows the implementation result of the luneberg lens antenna according to the present application. Experimental verification of the luneberg lens antenna as illustrated in fig. 3 and 4 resulted in the antenna pattern as shown in fig. 5. The result proves that the antenna beam width corresponding to a single antenna feed source of the luneberg lens antenna is 60 degrees under the gain of 1 dB. The beam width of the whole luneberg lens antenna in electric scanning is ± 110 °.
In one embodiment, a phased array antenna array is provided. The phased array antenna array comprises a plurality of luneberg lens antennas as in any of the embodiments described above.
In the embodiment of the present application, the number of the luneberg lens antennas is not limited, and may be specifically determined according to a phased array scanning range corresponding to the phased array antenna array.
Optionally, the phased antenna array may phase control a plurality of thin luneberg lens antennas to perform horizontal beam scanning by inputting a phase control signal through the T/R assembly.
When the luneberg lens antenna includes a plurality of antenna feeds 201, the connector 2022 of the luneberg lens antenna may be connected to a matrix switch controller, which is configured to control the antenna feeds 201 in each luneberg lens antenna to transmit electromagnetic signals in sequence according to a preset switch switching sequence to implement a scan in a pitch direction of the phased array antenna array. The phased antenna array realizes 360-degree scanning through the combined action of the beam scanning surface in the horizontal direction and the phased scanning surface in the pitching direction.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A Luneberg lens antenna is characterized in that the Luneberg lens antenna comprises a Luneberg lens part and a feed source part; the feed source part is provided with an antenna feed source, the antenna feed source is used for radiating electromagnetic signals to the Luneberg lens part, and the Luneberg lens part is used for transmitting the electromagnetic signals to form antenna beams;
the luneberg lens part is in a circular plate shape and comprises a first lens area close to the circle center and a second lens area far away from the circle center, through holes are formed in the first lens area and the second lens area along the radius direction, the density of the through holes in the first lens area is a first density, and the density of the through holes in the second lens area is gradually increased to a second density along the first direction;
wherein the second density is less than or equal to the first density; the first direction is a direction pointing from the edge of the luneberg lens part to the center, and the area of the first lens region is related to an antenna beam width design value and an antenna gain design value;
the Luneberg lens antenna comprises a first dielectric plate and a second dielectric plate, wherein the first dielectric plate is connected with the second dielectric plate through a connecting piece, the first dielectric plate and the second dielectric plate are both composed of a Luneberg lens plate and a feed plate, and the Luneberg lens plate is circular; the luneberg lens part is composed of the luneberg lens plates in the first dielectric plate and the second dielectric plate; the luneberg lens plate comprises a first plate area close to the circle center and a second plate area far away from the circle center; the first plate area and the second plate area are both provided with through holes along the radius direction, the density of the through holes in the first plate area is the first density, and the density of the through holes in the second plate area gradually increases to the second density along the first direction; the feed source part is composed of the feed source plates in the first dielectric plate and the second dielectric plate.
2. The luneberg lens antenna of claim 1, wherein the connector at the luneberg lens plate is non-metallic and the connector at the feed plate is metallic.
3. The luneberg lens antenna of claim 1, wherein the antenna feed is disposed on a side of the first dielectric plate facing the second dielectric plate.
4. A luneberg lens antenna as claimed in claim 3, further comprising a feed element connected to the antenna feed;
the feed unit is arranged on the first dielectric plate and used for feeding power to the antenna feed source.
5. The luneberg lens antenna of claim 4, wherein the feeding unit comprises a feeding line and a connector connected to each other, the feeding line being disposed on a side of the first dielectric plate facing away from the second dielectric plate, the connector being disposed at an edge position of the first dielectric plate;
the connector is used for being connected with an external feeding circuit and feeding the electric signal output by the external feeding circuit to the antenna feed source through the feeder line.
6. The luneberg lens antenna of claim 5, further comprising a reflector disposed at an edge of the feed plate in the first dielectric plate, the reflector configured to reflect the electromagnetic signal radiated by the antenna feed.
7. The luneberg lens antenna of claim 6, wherein the reflector plate has a connector hole therein, one end of the connector being located in the connector hole.
8. A Luneberg lens antenna as claimed in any one of claims 1 to 7, wherein a plurality of said antenna feeds are provided to the Luneberg lens antenna, and the position of each of said antenna feeds corresponds to the focal point of the Luneberg lens portion, and the number of said antenna feeds is related to the design value of the beam width of said antenna.
9. A Luneberg lens antenna as claimed in any one of claims 1 to 7, wherein the size of the Luneberg lens portion is related to the antenna gain design value.
10. A phased array antenna array comprising a plurality of luneberg lens antennas as claimed in any one of claims 1 to 7.
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| CN202210336470.XA CN114421178B (en) | 2022-04-01 | 2022-04-01 | Luneberg lens antenna and phased array antenna array |
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| CN202210336470.XA CN114421178B (en) | 2022-04-01 | 2022-04-01 | Luneberg lens antenna and phased array antenna array |
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| CN114421178B true CN114421178B (en) | 2022-08-02 |
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|---|---|---|---|---|
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