A lens antenna

Abstract

The present invention relates to a lens antenna, comprising a Luneburg lens, a first reflector, a second reflector, a first feed source, a second feed source, a mounting seat and an adjustment mechanism; one side of each of the first reflector and the second reflector is a fixed end, the other side of each of the first reflector and the second reflector is a movable end, the fixed ends of each of the first reflector and the second reflector are arranged close to each other and are rotatably connected to the mounting seat, and the rotation axis of the first reflector is parallel to or colinear with the rotation axis of the second reflector; the first reflector is provided with a first feed source, and the second reflector is provided with a second feed source; the adjustment mechanism is used to drive the first reflector and the second reflector to rotate simultaneously to perform an expansion or closure action, so that the intersection of the center lines of the radiation directions of the first feed source and the second feed source can move along a straight line M; the center point of the Luneburg lens is on the straight line M, and the first reflector and the second reflector are respectively on opposite sides of the straight line M.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment, and in particular to a lens antenna. Background Art

[0002] The existing lens antenna arranges multiple feed sources around the Luneburg lens and makes the center lines of the radiation directions of each feed source intersect at the center point of the Luneburg lens, so as to achieve the performance of multi-channel reception and transmission of the lens antenna. When Luneburg lenses of different diameters are used, the angle between the radiation directions of each feed source also needs to be changed so that the center lines of the radiation directions of each feed source intersect at the center point of the Luneburg lens. The existing multi-channel antenna changes the angle between the radiation directions of each feed source by changing the reflector plate structure, which results in that the reflector plate structures of lens antennas of different specifications are not universal, and reflector plate structures of different specifications need to be produced to suit Luneburg lenses of different diameters, which makes the modularity of the lens antenna low. Summary of the invention

[0003] The object of the present invention is to provide a lens antenna, the reflector structure of which can be applied to Luneburg lenses of different diameters and has a high degree of modularity.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a lens antenna, including a Luneburg lens, a first reflector, a second reflector, a first feed source, a second feed source, a mounting seat and an adjustment mechanism; one side of the first reflector and the second reflector is a fixed end, the other side of the first reflector and the second reflector is a movable end, the fixed ends of the first reflector and the second reflector are arranged close to each other and rotatably connected to the mounting seat, and the rotation axis of the first reflector is parallel to or colinear with the rotation axis of the second reflector; the first reflector is provided with a first feed source, and the second reflector is provided with a second feed source; the adjustment mechanism is installed on the mounting seat, and the adjustment mechanism is used to drive the first reflector and the second reflector to rotate simultaneously to perform an expansion or closure action, so that the intersection of the center lines of the radiation directions of the first feed source and the second feed source can move along a straight line M; the center point of the Luneburg lens is on the straight line M, and the first reflector and the second reflector are respectively on opposite sides of the straight line M.

[0005] Working principle of the present invention:

[0006] When assembling the lens antenna, the required angle parameter between the radiation direction of the first feed source and the radiation direction of the second feed source is calculated based on the diameter size of the Luneburg lens and other parameters of the antenna, and the first reflector and the second reflector are driven to expand or close by the adjustment mechanism, so that the angle between the first reflector and the second reflector matches the required angle parameter, so that the intersection point of the center line of the radiation direction of the first feed source and the second feed source intersects with the center point of the Luneburg lens. Through such a design, the reflector structure of the lens antenna can be applied to Luneburg lenses of different diameters, and the modularization degree is high.

[0007] Further, in a lens antenna as described above, the adjustment mechanism includes a first connecting rod, a second connecting rod and a sliding seat, the sliding seat is slidably mounted on the mounting seat, and the sliding direction of the sliding seat is set along the straight line M; one end of the first connecting rod is rotatably connected to the first reflector, and the other end of the first connecting rod is rotatably connected to the sliding seat; one end of the second connecting rod is rotatably connected to the second reflector, and the other end of the second connecting rod is rotatably connected to the sliding seat; the first reflector and the second reflector are located between the sliding seat and the Luneburg lens, so that the sliding seat sliding toward the first reflector and the second reflector can drive the first reflector and the second reflector to close, and the sliding seat sliding away from the first reflector and the second reflector can drive the first reflector and the second reflector to expand.

[0008] Furthermore, in a lens antenna as described above, a fitting seat is installed on the mounting seat, the fitting seat is a cylindrical structure, the cross-sectional profile of the inner cavity of the fitting seat is a polygonal structure, the axis of the fitting seat is arranged along a straight line M, the first reflector plate and the second reflector plate are located between the Longbo lens and the fitting seat; the sliding seat is sequentially formed with a connecting portion, an embedding portion and a threaded portion along its axis; the connecting portion is located on the outer side of the tube mouth of the fitting seat close to the first reflector plate and the second reflector plate, and the connecting portion is used to be rotatably connected to the first connecting rod and the second connecting rod; the embedding portion is slidably embedded in the inner cavity of the fitting seat; the end of the threaded portion passes through the inner cavity of the fitting seat from the tube mouth of the fitting seat facing away from the first reflector plate and the second reflector plate; the adjustment mechanism also includes an elastic member and an adjusting nut; one end of the elastic member is connected to the sliding seat, and the other end of the elastic member is connected to the fitting seat, so that the sliding seat has a tendency to slide toward the first reflector plate and the second reflector plate; the adjusting nut is threadedly connected to the threaded portion of the sliding seat and rests on the fitting seat.

[0009] Furthermore, in the lens antenna as described above, the adjustment mechanism further includes a tightening nut, which is threadedly connected to the threaded portion of the sliding seat, so that the adjustment nut is clamped between the end surface of the sleeve seat and the tightening nut.

[0010] Furthermore, in a lens antenna as described above, a mounting flange is formed on the circumferential surface of the embedded portion, and the mounting flange is arranged close to the connecting portion and is located on the outside of the mounting seat; the elastic member is a spring, and the elastic member is mounted on the embedded portion of the sliding seat, and the elastic member is compressed and arranged between the mounting flange of the embedded portion of the sliding seat and the mounting seat.

[0011] Furthermore, in the lens antenna as described above, a position mark is formed at the connection portion between the embedding portion and the threaded portion of the sliding seat; an observation port connected to the inner cavity of the sleeve seat is formed on the circumferential surface of the sleeve seat, and the observation port is used to monitor the position mark of the sliding seat.

[0012] Furthermore, as in the lens antenna described above, a scale mark is also provided on the circumferential surface of the mounting seat, and the scale mark is located beside the observation port. The scale mark is used to cooperate with the position mark on the sliding seat to provide a positioning reference for the sliding seat.

[0013] Furthermore, the lens antenna as described above also includes a mounting frame, which is detachably mounted on the mounting seat, and a clamping space is formed on the mounting frame, and the Luneburg lens is clamped and fixed in the clamping space of the mounting frame.

[0014] Furthermore, a lens antenna as described above also includes an outer shell, which includes a shell and a cover plate, the shell is a cylindrical structure, one end of the shell is open, and the other end of the shell is closed; the cover plate is detachably mounted on the open end of the shell, so that the cover plate and the shell are enclosed to form a accommodating cavity; the Luneburg lens, the first reflector, the second reflector, the first feed source, the second feed source, the mounting seat and the adjustment mechanism are all arranged in the accommodating cavity, and the mounting seat is detachably connected to the shell.

[0015] Furthermore, as a lens antenna described above, the straight line M is parallel to the axis of the shell, and the first reflector and the second reflector are arranged up and down; it also includes a base, and the shell of the outer shell is rotatably connected to the base, and the rotation axis of the shell intersects the straight line M and is parallel to the horizontal plane.

[0016] The technical solution of the present invention has the following beneficial effects: the reflector structure can be applied to Luneburg lenses of different diameters and has a high degree of modularity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of an embodiment;

[0018] Figure 2 for Figure 1 Cross-sectional view in the AA direction;

[0019] Figure 3 for Figure 2 A local enlarged view of point A;

[0020] Figure 4 It is a right side view of the embodiment after the housing and the base are removed;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B.

[0022] Description of reference numerals:

[0023] 1-first reflector; 2-second reflector; 3-first feed source; 4-second feed source; 5-adjusting mechanism; 51-first connecting rod; 52-second connecting rod; 53-sliding seat; 531-connecting portion; 532-embedded portion; 5321-mounting flange; 533-threaded portion; 534-position mark; 54-elastic member; 55-adjusting nut; 56-tightening nut; 6-mounting seat; 7-set seat; 71-observation port; 72-scale mark; 8-Luneburg lens; 9-mounting frame; 10-housing; 101-shell; 102-cover plate; 103-accommodating cavity; 20-base. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 5 A lens antenna of an embodiment includes a Luneburg lens 8, a first reflector 1, a second reflector 2, a first feed 3, a second feed 4, a mounting seat 6 and an adjustment mechanism 5; one side of each of the first reflector 1 and the second reflector 2 is a fixed end, and the other side of each of the first reflector 1 and the second reflector 2 is a movable end. The fixed ends of each of the first reflector 1 and the second reflector 2 are arranged close to each other and rotatably connected to the mounting seat 6, and the rotation axis of the first reflector 1 and the rotation axis of the second reflector 2 are arranged in a colinear manner; the first reflector 1 is provided with a first A feed source 3, a second reflector 2 is provided with a second feed source 4; an adjusting mechanism 5 is installed on a mounting seat 6, and the adjusting mechanism 5 is used to drive the first reflector 1 and the second reflector 2 to rotate simultaneously to perform an expansion or closure action, so that the intersection of the center lines of the radiation directions of the first feed source 3 and the second feed source 4 can move along a straight line M; the Luneburg lens 8 is a spherical structure, and the center point of the Luneburg lens 8 is on the straight line M; the rotation axes of the first reflector 1 and the second reflector 2 intersect with the straight line M, and the first reflector 1 and the second reflector 2 are respectively on opposite sides of the straight line M.

[0026] The working principle of this embodiment:

[0027] When assembling the lens antenna, the required angle parameter between the radiation direction of the first feed source 3 and the radiation direction of the second feed source 4 is calculated according to the diameter size of the Luneburg lens 8 and other parameters of the antenna, and the first reflector 1 and the second reflector 2 are driven to expand or close by the adjustment mechanism 5, so that the angle between the first reflector 1 and the second reflector 2 matches the required angle parameter, so that the intersection point of the center line of the radiation direction of the first feed source 3 and the second feed source 4 intersects with the center point of the Luneburg lens 8. Through such a design, the reflector structure of the lens antenna can be applied to Luneburg lenses 8 of different diameters, and the modularization degree is high.

[0028] like Figures 2 to 5 As shown, the adjustment mechanism 5 includes a first connecting rod 51, a second connecting rod 52 and a sliding seat 53. The sliding seat 53 is slidably mounted on the mounting seat 6, and the sliding direction of the sliding seat 53 is arranged along the straight line M; one end of the first connecting rod 51 is rotatably connected to the first reflecting plate 1, and the other end of the first connecting rod 51 is rotatably connected to the sliding seat 53; one end of the second connecting rod 52 is rotatably connected to the second reflecting plate 2, and the other end of the second connecting rod 52 is rotatably connected to the sliding seat 53; the first connecting rod 51 and the second connecting rod 52 are respectively connected to the sliding seat 53 on the The rotation axes of the connected ends are arranged parallel to each other, and the straight line M is between the connection part of the first connecting rod 51 on the sliding seat 53 and the connection part of the second connecting rod 52 on the sliding seat 53; the first reflector 1 and the second reflector 2 are located between the sliding seat 53 and the Luneburg lens 8, so that the sliding seat 53 slides toward the first reflector 1 and the second reflector 2 to drive the first reflector 1 and the second reflector 2 to close, and the sliding seat 53 slides away from the first reflector 1 and the second reflector 2 to drive the first reflector 1 and the second reflector 2 to expand. With such a structure, the angle parameter between the first reflector 1 and the second reflector 2 can be adjusted by operating the sliding seat 53, and the operation is relatively convenient.

[0029] like Figures 2 to 5As shown, a set seat 7 is installed on the mounting seat 6, and the set seat 7 is a cylindrical structure. The cross-sectional profile of the inner cavity of the set seat 7 is a rectangular structure. The axis of the set seat 7 is arranged along a straight line M. The first reflecting plate 1 and the second reflecting plate 2 are located between the Luneburg lens 8 and the set seat 7; the sliding seat 53 is sequentially formed with a connecting portion 531, an embedding portion 532 and a threaded portion 533 along its axis; the connecting portion 531 is located at the outer side of the tube mouth of the set seat 7 close to the first reflecting plate 1 and the second reflecting plate 2, and the connecting portion 531 is used to be rotatably connected to the first connecting rod 51 and the second connecting rod 52; the embedding portion 532 is slidably embedded in the inner cavity of the set seat 7, and a mounting flange 5321 is formed on the circumferential surface of the embedding portion 532 , the mounting flange 5321 is arranged near the connecting portion 531 and is located outside the set seat 7; the end of the threaded portion 533 passes through the inner cavity of the set seat 7 from the tube mouth of the set seat 7 facing away from the first reflector 1 and the second reflector 2; the adjustment mechanism 5 also includes an elastic member 54 and an adjustment nut 55; the elastic member 54 is a spring, and the elastic member 54 is mounted on the embedded portion 532 of the sliding seat 53, and the elastic member 54 is compressed and arranged between the mounting flange 5321 of the embedded portion 532 of the sliding seat 53 and the set seat 7, so that the sliding seat 53 has a movement tendency to slide toward the first reflector 1 and the second reflector 2; the adjustment nut 55 is threadedly connected with the threaded portion 533 of the sliding seat 53 and abuts against the set seat 7. Through such a structure, the sliding seat 53 can be driven to slide along the set seat 7 by simply rotating the adjustment nut 55, which is more convenient to operate.

[0030] like Figures 2 to 5 As shown, the adjustment mechanism 5 further includes a tightening nut 56, which is threadedly connected to the threaded portion 533 of the sliding seat 53, so that the adjustment nut 55 is sandwiched between the end surface of the set seat 7 and the tightening nut 56. The tightening nut 56 can prevent the adjustment nut 55 from loosening with the threaded portion 533 of the sliding seat 53 to change the angle between the first reflector 1 and the second reflector 2, thereby improving the reliability of the lens antenna.

[0031] like Figure 4 and Figure 5 As shown, the connecting part of the embedding part 532 and the threaded part 533 of the sliding seat 53 is formed with a position mark 534; the peripheral surface of the set seat 7 is formed with an observation port 71 connected to the inner cavity thereof, and the observation port 71 is used to monitor the position mark 534 of the sliding seat 53. The position of the position mark 534 of the sliding seat 53 relative to the set seat 7 can be calculated according to the required angle between the first reflector 1 and the second reflector 2, so that the angle between the first reflector 1 and the second reflector 2 can be precisely adjusted by measuring the distance between the position mark 534 and one end of the observation port 71.

[0032] like Figure 4 and Figure 5 As shown, a scale mark 72 is also provided on the circumferential surface of the set seat 7, and the scale mark 72 is located beside the observation port 71. The scale mark 72 is used to cooperate with the position mark 534 on the sliding seat 53 to provide a positioning reference for the sliding seat 53. The scale mark 72 of this embodiment is used to identify the target setting position corresponding to the position mark 534 when the Luneburg lens 8 has different diameters, so that the installer can quickly and conveniently complete the adjustment operation according to the diameter parameter of the Luneburg lens 8.

[0033] like Figures 2 to 5 As shown, this embodiment also includes a mounting frame 9, which is detachably mounted on the mounting seat 6, and a clamping space is formed on the mounting frame 9, and the Luneburg lens 8 is clamped and fixed in the clamping space of the mounting frame 9. The mounting frame 9 is produced in accordance with Luneburg lenses 8 of different diameters, and is detachably mounted on the mounting seat 6 by the mounting frame 9, so that the Luneburg lens 8 and the mounting seat 6 can be assembled and fixed conveniently.

[0034] like Figure 1 and Figure 2 As shown, this embodiment also includes a housing 10, and the housing 10 includes a shell 101 and a cover plate 102. The shell 101 is a cylindrical structure, one end of the shell 101 is open, and the other end of the shell 101 is closed; the cover plate 102 is detachably mounted on the open end of the shell 101, so that the cover plate 102 and the shell 101 are enclosed to form a receiving cavity 103; the Luneburg lens 8, the first reflector 1, the second reflector 2, the first feed source 3, the second feed source 4, the mounting seat 6 and the adjustment mechanism 5 are all arranged in the receiving cavity 103, and the mounting seat 6 is detachably connected to the shell 101. Such a design can expose the components of the wall lens antenna to the external environment, and play a role in waterproof and dustproof protection.

[0035] like Figure 1 and Figure 2 As shown, the straight line M is parallel to the axis of the housing 101, the first reflector 1 and the second reflector 2 are arranged up and down; a base 20 is also included, the housing 101 of the housing 10 is rotatably connected to the base 20, and the rotation axis of the housing 101 intersects the straight line M and is parallel to the horizontal plane. Such a design can facilitate the installer to adjust the tilt angle of the radiation direction of the lens antenna during installation, and the installation is more convenient.

[0036] The above description is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications, combinations and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A lens antenna, characterized in that: It includes a Luneburg lens, a first reflector, a second reflector, a first feed source, a second feed source, a mounting seat and an adjustment mechanism; one side of the first reflector and the second reflector is a fixed end, the other side of the first reflector and the second reflector is a movable end, the fixed ends of the first reflector and the second reflector are arranged close to each other and rotatably connected to the mounting seat, and the rotation axis of the first reflector is parallel or colinear with the rotation axis of the second reflector; the first reflector is provided with a first feed source, and the second reflector is provided with a second feed source; the adjustment mechanism is installed on the mounting seat, and the adjustment mechanism is used to drive the first reflector and the second reflector to rotate simultaneously to perform an expansion or closure action, so that the intersection of the center lines of the radiation directions of the first feed source and the second feed source can move along a straight line M; the center point of the Luneburg lens is on the straight line M, and the first reflector and the second reflector are respectively on opposite sides of the straight line M.

2. A lens antenna as claimed in claim 1, characterized in that: The adjustment mechanism includes a first connecting rod, a second connecting rod and a sliding seat, the sliding seat is slidably mounted on the mounting seat, and the sliding direction of the sliding seat is arranged along a straight line M; one end of the first connecting rod is rotatably connected to the first reflecting plate, and the other end of the first connecting rod is rotatably connected to the sliding seat; One end of the second connecting rod is rotatably connected to the second reflective plate, and the other end of the second connecting rod is rotatably connected to the sliding seat; the first reflective plate and the second reflective plate are located between the sliding seat and the Luneburg lens, so that the sliding seat slides toward the first reflective plate and the second reflective plate to drive the first reflective plate and the second reflective plate to close, and the sliding seat slides away from the first reflective plate and the second reflective plate to drive the first reflective plate and the second reflective plate to expand.

3. A lens antenna as claimed in claim 2, characterized in that: A fitting seat is installed on the mounting seat. The fitting seat is a cylindrical structure, and the cross-sectional profile of the inner cavity of the fitting seat is a polygonal structure. The axis of the fitting seat is set along a straight line M, and the first reflector plate and the second reflector plate are located between the Luneburg lens and the fitting seat; the sliding seat is sequentially formed with a connecting portion, an embedding portion and a threaded portion along its axis; the connecting portion is located outside the tube mouth of the fitting seat close to the first reflector plate and the second reflector plate, and the connecting portion is used to be rotatably connected to the first connecting rod and the second connecting rod; the embedding portion is slidably embedded in the inner cavity of the fitting seat; the end of the threaded portion passes through the inner cavity of the fitting seat from the tube mouth of the fitting seat facing away from the first reflector plate and the second reflector plate; the adjustment mechanism also includes an elastic member and an adjusting nut; one end of the elastic member is connected to the sliding seat, and the other end of the elastic member is connected to the fitting seat, so that the sliding seat has a tendency to slide toward the first reflector plate and the second reflector plate; the adjusting nut is threadedly connected to the threaded portion of the sliding seat and rests on the fitting seat.

4. A lens antenna as claimed in claim 3, characterized in that: The adjusting mechanism also includes a tightening nut, which is threadedly connected to the threaded portion of the sliding seat, so that the adjusting nut is clamped between the end surface of the sleeve seat and the tightening nut.

5. A lens antenna as claimed in claim 3, characterized in that: A mounting flange is formed on the circumferential surface of the embedded part, and the mounting flange is arranged close to the connecting part and is located on the outside of the sleeve seat; the elastic member is a spring, and the elastic member is sleeved on the embedded part of the sliding seat, and the elastic member is compressed and arranged between the mounting flange of the embedded part of the sliding seat and the sleeve seat.

6. A lens antenna as claimed in claim 3, characterized in that: The connecting part between the embedding part and the threaded part of the sliding seat is formed with a position mark; an observation port connected to the inner cavity of the sleeve seat is formed on the circumferential surface of the sleeve seat, and the observation port is used to monitor the position mark of the sliding seat.

7. A lens antenna as claimed in claim 6, characterized in that: A scale mark is also provided on the circumferential surface of the set seat, and the scale mark is located on the side of the observation port. The scale mark is used to cooperate with the position mark on the sliding seat to provide a positioning reference for the sliding seat.

8. A lens antenna as claimed in claim 1, characterized in that: The invention also comprises a mounting frame which is detachably mounted on the mounting seat, a clamping space is formed on the mounting frame, and the Luneburg lens is clamped and fixed in the clamping space of the mounting frame.

9. A lens antenna as claimed in claim 1, characterized in that: It also includes an outer shell, which includes a shell and a cover plate. The shell is a cylindrical structure, one end of the shell is open, and the other end of the shell is closed; the cover plate is detachably mounted on the open end of the shell, so that the cover plate and the shell are enclosed to form a accommodating cavity; the Luneburg lens, the first reflector, the second reflector, the first feed source, the second feed source, the mounting seat and the adjustment mechanism are all arranged in the accommodating cavity, and the mounting seat is detachably connected to the shell.

10. A lens antenna as claimed in claim 9, characterized in that: The straight line M is parallel to the axis of the shell, and the first reflector and the second reflector are arranged up and down; a base is also included, and the shell of the outer shell is rotatably connected to the base, and the rotation axis of the shell intersects the straight line M and is parallel to the horizontal plane.

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