CN211455948U - High gain antenna device - Google Patents

Abstract

The application relates to a high-gain antenna device, which comprises a substrate and two or more than two three-dimensional antennas, wherein each three-dimensional antenna is arranged on the substrate, and each three-dimensional antenna comprises a dual-polarized yagi antenna and/or a dual-polarized log-periodic antenna. The dual-polarized yagi antenna comprises an antenna axial rod, a dual-polarized reflector, dual-polarized active oscillators and a dual-polarized director, the dual-polarized log periodic antenna comprises an antenna main body consisting of four assembly lines, a plurality of antenna oscillators which are tightly attached to feed coaxial lines arranged on the assembly lines and a plurality of alternating equidistant parallel arrangement antenna elements on the assembly lines, and the feed coaxial lines penetrate through holes on the assembly lines and are connected to another assembly line opposite to the assembly line. The high-gain antenna device is designed into a three-dimensional array structure, so that the high-gain antenna device can form vertical plane wave beams, and the integral gain of the antenna is improved.

Description

High gain antenna device

Technical Field

The present application relates to the field of antenna devices, and in particular, to a high gain antenna device.

Background

An antenna is an indispensable important component of any radio communication system, and although various radio devices perform different tasks, the role of the antenna in the device is basically the same, and any radio device transmits information by radio waves, so that an antenna device capable of radiating or receiving electromagnetic waves is required.

The traditional antenna is provided with a large-scale antenna array, and the space freedom degree and the effective multipath component formed by a plurality of antennas are utilized, so that the spectrum utilization efficiency is improved, the antenna gain is further improved, and the performance of a communication system is improved.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a high-gain antenna device to solve the problem of poor gain effect of the conventional antenna.

A high-gain antenna device comprises a substrate and two or more than two stereo antennas, wherein each stereo antenna is arranged on the substrate and comprises a dual-polarized yagi antenna and/or a dual-polarized log-periodic antenna; wherein:

the dual-polarized yagi antenna comprises an antenna axial rod, a dual-polarized reflector, a dual-polarized active oscillator and a dual-polarized director, wherein the dual-polarized reflector, the dual-polarized active oscillator and the dual-polarized director are sequentially arranged on the antenna axial rod; the dual-polarized reflector is arranged at the first end of the antenna axial rod, and the dual-polarized director is arranged at the second end of the antenna axial rod;

the dual-polarized director comprises a first director and a second director which are orthogonally arranged, the first director and the second director comprise a plurality of metal pieces arranged on the axial rod of the antenna, each metal piece is perpendicular to the axial rod of the antenna, a vertical foot is superposed with the midpoint of each metal piece, the length of each metal piece is shorter than that of the adjacent metal piece close to the dual-polarized active oscillator, and when the first director and the second director orthogonally form the dual-polarized director, every two metal pieces with the same length are kept orthogonal and are positioned in the same plane;

the dual-polarized reflector comprises a first reflector and a second reflector which are orthogonally arranged, the first reflector and the second reflector respectively comprise a metal piece arranged on two sides of the axial rod of the antenna, the metal piece of the dual-polarized reflector is perpendicular to the axial rod of the antenna, a foot is coincided with the midpoint of the metal piece, the first reflector and the first director are positioned in the same plane, the second reflector and the second director are positioned in the same plane, and the length of the metal piece of the dual-polarized reflector is longer than that of any metal piece of the dual-polarized director;

the dual-polarized active oscillator comprises two single-polarized active oscillators, namely a first active oscillator and a second active oscillator, which are orthogonally arranged, wherein the first active oscillator and the second active oscillator are respectively composed of two L-shaped metal pieces symmetrically arranged on two sides of an antenna axial rod, one arm of each L-shaped metal piece is a connecting arm and is attached to the antenna axial rod, a port of each connecting arm is connected with the dual-polarized reflector, the other arm of each L-shaped metal piece is a functional arm, and the length of each functional arm is longer than that of the director and shorter than that of the reflector; meanwhile, the first active oscillator and the first reflector are in the same plane, and the second active oscillator and the second reflector are in the same plane;

the dual-polarized log-periodic antenna comprises:

the antenna main body comprises four same aggregation lines, namely a first aggregation line, a second aggregation line, a third aggregation line and a fourth aggregation line, which are sequentially arranged around a space axis, wherein the first aggregation line and the third aggregation line are oppositely arranged, the second aggregation line and the fourth aggregation line are oppositely arranged, a connecting line between a midpoint of the first aggregation line and a midpoint of the third aggregation line is perpendicular to a connecting line between the midpoint of the second aggregation line and the midpoint of the fourth aggregation line, a foot is hung on the space axis, and the first aggregation line, the second aggregation line, the third aggregation line and the fourth aggregation line respectively comprise a first end and a second end; the antenna elements are alternately arranged on two sides of the first aggregation line relative to the space axis direction at equal intervals in sequence from the first end to the second end of the first aggregation line, and the shorter the length of the antenna element close to the second end of the first aggregation line, the antenna elements on the first aggregation line are parallel to each other and are positioned on the same plane; a plurality of antenna oscillators are also arranged on the second aggregation line, the third aggregation line and the fourth aggregation line respectively, and the arrangement mode of the antenna oscillators is the same as that of the antenna oscillators of the first aggregation line;

the first coaxial line and the second coaxial line are respectively arranged on the first aggregation line and the second aggregation line and comprise an inner conductor, an insulating medium layer and an outer conductor layer which are coaxially arranged, the insulating medium layer is arranged between the inner conductor and the outer conductor layer, and the outer conductor layer of the first coaxial line and the second coaxial line are respectively attached to one sides, far away from the space axis, of the first aggregation line and the second aggregation line;

the first set line with the second end of second set line still is provided with first through-hole and second through-hole respectively, the shape and the size of first through-hole and second through-hole respectively with first coaxial line and second coaxial line suit, the output of first coaxial line and second coaxial line is connected to respectively first through-hole and second through-hole, just the inner conductor of first coaxial line and second coaxial line passes respectively first through-hole with the second through-hole is connected to the third set line with the fourth set line.

In one embodiment, the stereo antennas of different frequency bands are arranged on the substrate in a crossed manner.

In one embodiment, the dual-polarized yagi antenna further comprises a first reflection plate, the first reflection plate is disposed on a side of the dual-polarized reflector away from the second end, and the first reflection plate is connected to the dual-polarized reflector.

In one embodiment, the dual-polarized yagi antenna further comprises a radome, wherein the radome is a cavity structure with one open end and the other closed end, and the open end is fixed on the first reflector plate.

In one embodiment, the dual-polarized active element further comprises a feeding structure disposed on the first active element and a feeding structure disposed on the second active element, each of the feeding structures comprising:

the metal bump is arranged on one functional arm and used for receiving feed;

a coaxial line, one end port of which is connected with the metal bump and is used for transmitting current to the single-polarization active oscillator to drive the antenna to work;

the supporting piece is coated outside the coaxial line and used for isolating the coaxial line from the external environment;

and the metal shell is arranged outside the supporting piece, and meanwhile, one part of the metal shell is embedded into the functional arm without the metal lug.

In one embodiment, the dual polarized yagi antenna is fed using a 50 ohm coaxial line.

In one embodiment, the dual-polarized log-periodic antenna further comprises:

a third coaxial line disposed on the third collective line, symmetrical to the first coaxial line with respect to the spatial axis;

and the fourth coaxial line is arranged on the fourth collecting line and is symmetrical to the second coaxial line about the space axis.

In one embodiment, the first set line, the third set line, and the input impedance of the first antenna single-polarization structure formed by the first coaxial line, the third coaxial line and the antenna element arranged on the first set line and the third set line, and the input impedance of the second antenna single-polarization structure formed by the second coaxial line, the fourth coaxial line and the antenna element arranged on the second set line and the fourth set line are both 50 ohms.

In one embodiment, the wires of the first coaxial line, the second coaxial line, the third coaxial line and the fourth coaxial line are 50 ohm coaxial lines.

In one embodiment, the dual-polarized log-periodic antenna further comprises:

and a second reflection plate disposed at the first end of the antenna main body.

Above-mentioned high gain antenna device adopts dual polarization yagi antenna and/or dual polarization log periodic antenna to constitute antenna array, and dual polarization yagi antenna can effectively improve the antenna gain coefficient through designing novel reflector and active oscillator to adopt dual polarization structure, the dual polarization can also reduce signal transmission's polarization loss simultaneously, accurate received signal. The dual-polarized log periodic antenna realizes dual polarization of two single-polarized antenna units by adopting a cross-shaped structure, can reduce signal polarization loss, and has good horizontal and vertical gains, and the antenna elements on the antenna can be disassembled and assembled in blocks, so that the dual-polarized log periodic antenna is simple in structure and convenient to manufacture and install. The high-gain antenna device is designed into a three-dimensional array structure, so that the high-gain antenna device can form vertical plane wave beams, and the integral gain of the antenna is improved.

Drawings

FIG. 1 is a block diagram of a high gain antenna apparatus in one embodiment;

FIG. 2 is a schematic diagram of a three-dimensional antenna according to an embodiment;

FIG. 3 is a schematic distribution diagram of a stereo antenna in another embodiment;

fig. 4 is a schematic structural diagram of a dual-polarized yagi antenna according to an embodiment;

fig. 5 is a front view of a dual polarized yagi antenna in an embodiment;

FIG. 6 is a schematic diagram of an embodiment of an active element;

fig. 7 is a side view of a dual polarized yagi antenna in an embodiment;

FIG. 8 is a schematic diagram of one direction of a feed structure in one embodiment;

FIG. 9 is a schematic diagram of another direction of the feeding structure in one embodiment;

FIG. 10 is a schematic structural diagram of a dual-polarized log-periodic antenna according to an embodiment;

FIG. 11 is a partial schematic view of a coaxial wire structure in one embodiment;

FIG. 12 is a cross-sectional view of a portion of a dual polarized log periodic antenna in one embodiment;

FIG. 13 is a top view of a dual polarized log periodic antenna according to one embodiment;

fig. 14 is a schematic diagram of a single polarization structure of an antenna according to an embodiment.

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 one embodiment, a high gain antenna device is provided, as shown in fig. 1, including a substrate 11 and two or more than two solid antennas 12, where each solid antenna 12 is disposed on the substrate 11, and the solid antennas 12 include dual-polarized yagi antennas and/or dual-polarized log-periodic antennas. Specifically, the stereo antenna 12 is vertically disposed on the substrate 11, and the stereo antenna 12 may be a fully-adopted dual-polarized yagi antenna, a fully-adopted dual-polarized log-periodic antenna, or a combination of a dual-polarized yagi antenna and a dual-polarized log-periodic antenna. The material of the substrate 11 is not exclusive, and may be a metal plate, a plastic plate, or the like, and in this embodiment, the substrate 11 is a metal substrate, which improves the antenna fixing reliability. The frequency bands of different stereo antennas 12 can be the same or different. In this embodiment, the stereo antennas 12 of different frequency bands are crosswise disposed on the substrate. As shown in fig. 2, the stereo antenna 12 includes a frequency band 1 antenna and a frequency band 2 antenna, and the two antennas in different frequency bands are arranged in a cross manner. The specific structural dimensions of the stereo antennas 12 in different frequency bands are different, and as shown in fig. 3, the stereo antennas 12 in different frequency bands are in a cross-twisting type high-gain array mode, where the frequency band 1 antenna is a low-frequency antenna and has a high height, and the frequency band 2 antenna is a high-frequency antenna and has a low height. The three-dimensional antennas with different frequency bands are placed in a crossed mode, namely, the distance between the two three-dimensional antenna units is enlarged, the effective aperture area is indirectly enlarged, and the antenna gain is improved.

As shown in fig. 4 and 5, the dual-polarized yagi antenna comprises an antenna axial rod (not shown in the figures), a dual-polarized reflector 110, a dual-polarized active element 120 and a dual-polarized director 130. The antenna axial rod is a metal supporting rod, can be in a round rod shape, a square rod shape, a track shape and the like, and is used for carrying all components of the antenna.

The dual-polarized director 110, the dual-polarized active oscillator 120 and the dual-polarized reflector 130 are relatively independent and are sequentially arranged on the antenna axial rod, the dual-polarized reflector 130 is arranged at the first end of the antenna axial rod, and the dual-polarized director 110 is arranged at the second end of the antenna axial rod. For convenience of description, two ends of the axial rod of the antenna are referred to as an a end and a B end, respectively, the dual-polarized director 110 is disposed at the a end, and the dual-polarized reflector 130 is disposed at the B end.

The dual-polarized director 110 comprises a first director and a second director which are orthogonally arranged, the first director and the second director are the same, and the first director and the second director are composed of a plurality of metal pieces arranged on the axial rod of the antenna. The metal piece can be a metal rod or a metal strip. The metal piece is perpendicular to the antenna axial rod, and the vertical feet are superposed with the middle point of the metal piece, so that two ends of the metal piece are symmetrically arranged on the antenna axial rod. Meanwhile, the length relationship among the metal pieces is as follows: the lengths of the metal parts are different, and the length of each metal part is shorter than that of the adjacent metal part close to the dual-polarized active oscillator, namely the lengths of the metal parts are sequentially shortened along the direction from the end B to the end A; or the metal pieces can be divided into a plurality of groups along the direction from the end B to the end A, the length of the plurality of metal pieces in each group is the same, but the length of each group of metal pieces is shorter than that of the adjacent group of metal pieces close to the end B. Meanwhile, when the first director and the second director are orthogonally combined into the dual-polarized director, the metal pieces with the same length are also kept orthogonal and in the same plane, namely the metal pieces with the same length form a cross shape as shown in the figure and are arranged on the axial rod of the antenna.

The dual-polarized reflector 130 includes a first reflector and a second reflector which are orthogonally arranged, the first reflector and the second reflector are the same, and each of the first reflector and the second reflector includes a metal piece arranged on the axial rod of the antenna, the metal piece is perpendicular to the axial rod of the antenna, and the vertical feet are overlapped with the middle point of the metal piece, so that two ends of the metal piece are symmetrically arranged on the axial rod of the antenna, and the first reflector and the second reflector are in the same plane. The length of the piece of metal of dual-polarized reflector 130 is longer than the length of any piece of metal of dual-polarized director 110.

As shown in fig. 6, the dual-polarized active element 120 includes two identical single-polarized active elements that are orthogonally disposed, that is, a first active element and a second active element, and each of the two same single-polarized active elements is composed of two L-shaped metal elements that are symmetrically disposed on two sides of the antenna axial rod, one of the arms of the L-shaped metal element is a connecting arm 121 attached to the antenna axial rod, and a port 122 on the connecting arm 121 is connected to a corresponding metal element of the dual-polarized reflector 130, that is, one L-shaped metal element of the first active element is connected to a metal element on one side of the first reflector, the other L-shaped metal element of the first active element is connected to a metal element on the other side of the first reflector, and the description of the second active element is omitted here. The length of the connecting arm 121 can be adjusted according to actual requirements, such as the wavelength of the signal transmitted and received by the antenna. The other arm of the L-shaped metal piece is a functional arm 123, and the length of the functional arm 123 is longer than that of the director and shorter than that of the reflector; meanwhile, the first active oscillator and the first reflector are in the same plane, and the second active oscillator and the second reflector are in the same plane. Specifically, the sum of the lengths of the two functional arms of the active element, which are disposed on the two sides of the axial rod of the antenna, is greater than the length of any one metal piece of the dual-polarized director 110, and is less than the length of the metal piece of the dual-polarized reflector 130. The angle between the connecting arm 121 and the functional arm 123 of the L-shaped metal member can be adjusted according to the actual signal transceiving requirement, and in one embodiment, the angle between the connecting arm 121 and the functional arm 123 of the L-shaped metal member is 90 °.

Referring to fig. 7, the relationship between dual-polarized director 110, dual-polarized active element 120 and dual-polarized reflector 130 further comprises: the first active oscillator, the first reflector and the first director are positioned in the same plane, the second active oscillator, the second reflector and the second director are positioned in the same plane, and the view of the whole antenna from the A end to the B end is approximately in a cross shape.

In one embodiment, the dual polarized yagi antenna further comprises a first reflection plate, which may be a metal flat plate having a shape of a rectangle, a circle, a regular polygon, or the like. The first reflection plate is disposed on a side of the dual-polarized reflector 130 away from the second end, and the first reflection plate is connected to the dual-polarized reflector 130. Specifically, the first reflection plate is disposed at the end B of the dual-polarized reflector of the axial rod of the antenna, and the first reflection plate is disposed at a side away from the dual-polarized reflector 130 and closer to the end B, so as to enhance reflection and improve the front-to-back ratio of the antenna. The first reflection plate is connected with the dual-polarized reflector 130, i.e., the dual-polarized reflector 130 is disposed on the reflection plate.

In one embodiment, the dual-polarized yagi antenna further comprises a radome, the radome is a cavity structure with an opening at one end and a closed end at the other end, and the opening end is fixed on the reflector plate. The dual-polarized yagi antenna is arranged in the antenna housing cavity structure to protect each component of the antenna.

Referring to fig. 8 and 9, in one embodiment, a feeding structure 200 is disposed on both the first active element and the second active element of the dual-polarized active element 130, and each feeding structure 200 includes:

the metal bump 201 is provided as a feeding point on one of the functional arms 123a of the single-polarized active oscillator to receive feeding.

A port at one end of the coaxial line 202 is connected with the metal bump 201, and is used for transmitting current to the active element to drive the antenna to work.

The support member 203, which is wrapped around the coaxial cable 202, is used to isolate the coaxial cable 202 from the external environment, and in one embodiment, the material of the support member is teflon, which further plays an insulating role.

The metal shell 204 is disposed outside the supporting member 203, and a portion of the metal shell 204 is embedded in the other functional arm 123b without the metal bump 201, so as to ground the metal shell, so that the coaxial line 202 and the metal shell 204 form a potential difference.

In one embodiment, the input impedance of the dual-polarized yagi antenna is 50 ohms, and the 50-ohm coaxial line can be directly used for feeding without additionally connecting an impedance transformer. Further, in one embodiment, a dual polarized yagi antenna is fed using a 50 ohm coaxial line. Furthermore, in one embodiment, a dual polarized yagi antenna is capable of achieving 9dB of gain.

As shown in fig. 10, the dual polarized log periodic antenna includes an antenna body 310, an antenna element 320, a first coaxial line 330 and a second coaxial line 340.

The antenna main body 310 includes four identical sets of lines, which are a first set of line 311, a second set of line 312, a third set of line 313 and a fourth set of line 314, respectively, and the four sets of lines are sequentially disposed around a space axis, wherein the first set of line 311 and the third set of line 313 are disposed relatively, and the second set of line 312 and the fourth set of line 314 are also disposed relatively. Meanwhile, a connection line between a midpoint of the first aggregation line 311 and a midpoint of the third aggregation line 313 is perpendicular to a connection line between a midpoint of the second aggregation line 312 and a midpoint of the fourth aggregation line 314, and depends on a spatial axis, and the first aggregation line 311, the second aggregation line 312, the third aggregation line 313 and the fourth aggregation line 314 all include a first end and a second end. That is, the four grouped wires are not staggered, but arranged in a way of keeping the lengths aligned, so that the antenna keeps the relative symmetrical stability of the structure as much as possible.

First set of line 311, second set of line 312, third set of line 313, it is provided with a plurality of antenna element 320 respectively to divide equally on the fourth set of line 314, antenna element 320 can be metal rectangular strip or metal bar, and the metalwork of other shapes, for the convenience of description, will each set both ends of line and be called top and bottom respectively, a plurality of antenna element 320 on arbitrary set line all is from this set line bottom to the both sides of top direction equidistant ground setting in proper order for the space axis at set line, a left side is right in turn along the equidistant ground setting of direction from the bottom to the top in proper order, and the antenna element length that is closer to the top is shorter more, a plurality of antenna element 320 on the same set line are parallel to each other and are in the coplanar simultaneously.

The first coaxial line 330 and the second coaxial line 340 are respectively disposed on the first collective line 311 and the second collective line 312, as shown in fig. 11, the first coaxial line 330 and the second coaxial line 340 respectively include an inner conductor 331, an insulating dielectric layer 332 and an outer conductor layer 333 which are coaxially disposed, and the insulating dielectric layer 332 is disposed between the inner conductor 331 and the outer conductor layer 333 to ensure that they are not in contact with each other. When the coaxial cable is arranged, the outer conductor layers 333 of the first coaxial line 330 and the second coaxial line 340 are respectively attached to the outer sides, far away from the space axis, of the first aggregation line 311 and the second aggregation line 312 so as to generate a potential difference.

Referring to fig. 12, the top ends of the first aggregation line 311 and the second aggregation line 312 are respectively provided with a first through hole 350 and a second through hole 360, the first through hole 350 and the second through hole 360 may be in shapes and sizes corresponding to the first coaxial line 330 and the second coaxial line 340, and may also be larger or smaller than the cross section of the coaxial line, and the coaxial line disposed on the aggregation line may connect the output end to the through hole on the aggregation line where the coaxial line is located. Further, the inner conductor of the collective line connected to the via may further extend to pass through the via and be connected to the collective line opposite to the collective line where the coaxial line is located, so as to constitute a feed structure. For example, the output end of the second coaxial line 340 disposed on the second aggregation line 312 is connected to the second through hole 360, while the inner conductor of the output end of the second coaxial line 340 further extends through the second through hole 360 to be connected to the fourth coaxial line 314, and the arrangement manner of the first aggregation line 311 and the first coaxial line 330 is also the same, and will not be described herein again.

In one embodiment, each collective line constituting the antenna body is shaped as a rectangular parallelepiped to facilitate mounting of components such as an antenna element, a coaxial line, and the like.

As shown in fig. 10 and 13, in one embodiment, the dual-polarized log-periodic antenna further includes a third coaxial line 370 and a fourth coaxial line 380 respectively disposed on the third collective line 313 and the fourth collective line 314, and the third coaxial line 370 is symmetrical to the first coaxial line 330 about the aforementioned spatial axis, and the fourth coaxial line 380 and the second coaxial line 340 are symmetrical about the aforementioned spatial axis. In one embodiment, third coaxial line 370 may also be equal in length to first coaxial line 330 and fourth coaxial line 380 may be equal in length to second coaxial line 340. In another embodiment, third coaxial line 370 is identical to first coaxial line 330 and fourth coaxial line 380 is identical to second coaxial line 340. Through the coaxial lines symmetrical to the first coaxial line 330 and the second coaxial line 340, the structural symmetry of the dual-polarized log periodic antenna can be guaranteed, the symmetry of the radiation characteristic of the antenna is guaranteed, and the performance of the antenna is improved.

As shown in fig. 14, in one embodiment, the input impedance of the first antenna single-polarization structure composed of the first collective line 311, the third collective line 313, and the first coaxial line 330, the third coaxial line 370, and the antenna element disposed on the first collective line 311 and the third collective line 313 is 50 ohms. The input impedance of the second antenna single-polarization structure composed of the second aggregate line 312, the fourth aggregate line 314, and the second coaxial line 340, the fourth coaxial line 380, and the antenna element disposed on the second aggregate line 312 and the fourth aggregate line 314 is also 50 ohms. The dual-polarized log periodic antenna does not need an impedance transformer, can directly adopt a 50-ohm coaxial line for feeding, is convenient and stable, and has strong adaptability. Further, in one embodiment, the wires of the first coaxial line 330, the second coaxial line 340, the third coaxial line 370, and the fourth coaxial line 380 are all 50 ohm coaxial lines.

In one embodiment, the first through hole 350 is opened closer to the top end than the second through hole 360, so that the inner conductors of the first coaxial line 330 and the second coaxial line 340 are not overlapped when being connected to the third aggregation line 313 and the fourth aggregation line 314, respectively, to avoid interference.

In one embodiment, the dual polarized log periodic antenna further comprises a second reflector plate disposed at the first end of the antenna body. The second reflecting plate arranged at the bottom end of the antenna main body is additionally arranged to increase the front-to-back ratio of the antenna and improve the performance of the antenna.

Above-mentioned high gain antenna device adopts dual polarization yagi antenna and/or dual polarization log periodic antenna to constitute antenna array, and dual polarization yagi antenna can effectively improve the antenna gain coefficient through designing novel reflector and active oscillator to adopt dual polarization structure, the dual polarization can also reduce signal transmission's polarization loss simultaneously, accurate received signal. The dual-polarized log periodic antenna realizes dual polarization of two single-polarized antenna units by adopting a cross-shaped structure, can reduce signal polarization loss, and has good horizontal and vertical gains, and the antenna elements on the antenna can be disassembled and assembled in blocks, so that the dual-polarized log periodic antenna is simple in structure and convenient to manufacture and install. The high-gain antenna device is designed into a three-dimensional array structure, so that the high-gain antenna device can form vertical plane wave beams, and the integral gain of the antenna is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within 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 utility model. 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 patent shall be subject to the appended claims.

Claims (10)

1. A high-gain antenna device is characterized by comprising a substrate and two or more than two stereo antennas, wherein each stereo antenna is arranged on the substrate and comprises a dual-polarized yagi antenna and/or a dual-polarized log-periodic antenna; wherein:

the dual-polarized yagi antenna comprises an antenna axial rod, a dual-polarized reflector, a dual-polarized active oscillator and a dual-polarized director, wherein the dual-polarized reflector, the dual-polarized active oscillator and the dual-polarized director are sequentially arranged on the antenna axial rod; the dual-polarized reflector is arranged at the first end of the antenna axial rod, and the dual-polarized director is arranged at the second end of the antenna axial rod;

the dual-polarized director comprises a first director and a second director which are orthogonally arranged, the first director and the second director comprise a plurality of metal pieces arranged on the axial rod of the antenna, each metal piece is perpendicular to the axial rod of the antenna, a vertical foot is superposed with the midpoint of each metal piece, the length of each metal piece is shorter than that of the adjacent metal piece close to the dual-polarized active oscillator, and when the first director and the second director orthogonally form the dual-polarized director, every two metal pieces with the same length are kept orthogonal and are positioned in the same plane;

the dual-polarized reflector comprises a first reflector and a second reflector which are orthogonally arranged, the first reflector and the second reflector respectively comprise a metal piece arranged on two sides of the axial rod of the antenna, the metal piece of the dual-polarized reflector is perpendicular to the axial rod of the antenna, a foot is coincided with the midpoint of the metal piece, the first reflector and the first director are positioned in the same plane, the second reflector and the second director are positioned in the same plane, and the length of the metal piece of the dual-polarized reflector is longer than that of any metal piece of the dual-polarized director;

the dual-polarized active oscillator comprises two single-polarized active oscillators, namely a first active oscillator and a second active oscillator, which are orthogonally arranged, wherein the first active oscillator and the second active oscillator are respectively composed of two L-shaped metal pieces symmetrically arranged on two sides of an antenna axial rod, one arm of each L-shaped metal piece is a connecting arm and is attached to the antenna axial rod, a port of each connecting arm is connected with the dual-polarized reflector, the other arm of each L-shaped metal piece is a functional arm, and the length of each functional arm is longer than that of the director and shorter than that of the reflector; meanwhile, the first active oscillator and the first reflector are in the same plane, and the second active oscillator and the second reflector are in the same plane;

the dual-polarized log-periodic antenna comprises:

the antenna main body comprises four same aggregation lines, namely a first aggregation line, a second aggregation line, a third aggregation line and a fourth aggregation line, which are sequentially arranged around a space axis, wherein the first aggregation line and the third aggregation line are oppositely arranged, the second aggregation line and the fourth aggregation line are oppositely arranged, a connecting line between a midpoint of the first aggregation line and a midpoint of the third aggregation line is perpendicular to a connecting line between the midpoint of the second aggregation line and the midpoint of the fourth aggregation line, a foot is hung on the space axis, and the first aggregation line, the second aggregation line, the third aggregation line and the fourth aggregation line respectively comprise a first end and a second end; the antenna elements are alternately arranged on two sides of the first aggregation line relative to the space axis direction at equal intervals in sequence from the first end to the second end of the first aggregation line, and the shorter the length of the antenna element close to the second end of the first aggregation line, the antenna elements on the first aggregation line are parallel to each other and are positioned on the same plane; a plurality of antenna oscillators are also arranged on the second aggregation line, the third aggregation line and the fourth aggregation line respectively, and the arrangement mode of the antenna oscillators is the same as that of the antenna oscillators of the first aggregation line;

the first coaxial line and the second coaxial line are respectively arranged on the first aggregation line and the second aggregation line and comprise an inner conductor, an insulating medium layer and an outer conductor layer which are coaxially arranged, the insulating medium layer is arranged between the inner conductor and the outer conductor layer, and the outer conductor layer of the first coaxial line and the second coaxial line are respectively attached to one sides, far away from the space axis, of the first aggregation line and the second aggregation line;

the first set line with the second end of second set line still is provided with first through-hole and second through-hole respectively, the shape and the size of first through-hole and second through-hole respectively with first coaxial line and second coaxial line suit, the output of first coaxial line and second coaxial line is connected to respectively first through-hole and second through-hole, just the inner conductor of first coaxial line and second coaxial line passes respectively first through-hole with the second through-hole is connected to the third set line with the fourth set line.

2. The high-gain antenna device as claimed in claim 1, wherein the solid antennas of different frequency bands are disposed across the substrate.

3. The high gain antenna assembly of claim 1, wherein said dual polarized yagi antenna further comprises a first reflector plate disposed on a side of said dual polarized reflector remote from said second end, said first reflector plate being connected to said dual polarized reflector.

4. The high-gain antenna device according to claim 3, wherein the dual-polarized yagi antenna further comprises a radome, the radome has a cavity structure with one open end and the other closed end, and the open end is fixed on the first reflector plate.

5. The high gain antenna assembly of claim 1, wherein said dual polarized active element further comprises a feed structure disposed on said first active element and a feed structure disposed on said second active element, each of said feed structures comprising:

the metal bump is arranged on one functional arm and used for receiving feed;

a coaxial line, one end port of which is connected with the metal bump and is used for transmitting current to the single-polarization active oscillator to drive the antenna to work;

the supporting piece is coated outside the coaxial line and used for isolating the coaxial line from the external environment;

and the metal shell is arranged outside the supporting piece, and meanwhile, one part of the metal shell is embedded into the functional arm without the metal lug.

6. A high gain antenna device according to claim 1, wherein said dual polarized yagi antenna is fed using a 50 ohm coaxial line.

7. The high gain antenna device according to claim 1, wherein the dual polarized log periodic antenna further comprises:

a third coaxial line disposed on the third collective line, symmetrical to the first coaxial line with respect to the spatial axis;

and the fourth coaxial line is arranged on the fourth collecting line and is symmetrical to the second coaxial line about the space axis.

8. The high-gain antenna device according to claim 7, wherein the input impedance of the first antenna single-polarization structure composed of the first set line, the third set line, the first coaxial line, the third coaxial line, and the antenna element disposed on the first set line and the third set line, and the input impedance of the second antenna single-polarization structure composed of the second set line, the fourth set line, and the second coaxial line, the fourth coaxial line, and the antenna element disposed on the second set line and the fourth set line are both 50 ohms.

9. The high gain antenna arrangement according to claim 8, wherein the wires of the first coaxial line, the second coaxial line, the third coaxial line and the fourth coaxial line are 50 ohm coaxial lines.

10. The high gain antenna device according to claim 1, wherein the dual polarized log periodic antenna further comprises:

and a second reflection plate disposed at the first end of the antenna main body.

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