CN211789540U

CN211789540U - Reinforced dual-polarized log periodic antenna

Info

Publication number: CN211789540U
Application number: CN202020444845.0U
Authority: CN
Inventors: 张少林; 崔立成
Original assignee: Shenzhen Wave Technology Co Ltd
Current assignee: Shenzhen Wave Technology Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-10-27
Anticipated expiration: 2030-03-31

Abstract

The invention relates to a reinforced dual-polarized log-periodic antenna. The reinforced dual-polarized log periodic antenna comprises an antenna main body consisting of four assembly lines, feed coaxial lines are tightly attached to the assembly lines, a plurality of antenna oscillators are arranged on the assembly lines in an alternating equidistant parallel mode, an F-B covering layer is arranged at the first end of the antenna main body, and the feed coaxial lines penetrate through holes in the assembly lines and are connected to another assembly line opposite to the assembly lines. According to the structure, the characteristic that the antenna has good gain in the vertical and horizontal directions is realized through dual polarization, meanwhile, the symmetrical structure ensures the symmetry of antenna radiation, the F-B covering layer and the plane where the second end of the antenna main body is located form an F-B resonant cavity, electromagnetic waves radiated by the antenna main body are superposed in phase in the resonant cavity, the radiation gain of the antenna is improved, and the length of the set line and the number of the antenna oscillators can be adjusted to realize high gain.

Description

Reinforced dual-polarized log periodic antenna

Technical Field

The invention relates to the field of antenna equipment and technology, in particular to a reinforced dual-polarized log-periodic antenna.

Background

The log periodic antenna is a common antenna, has the characteristics of broadband and line planning due to the periodic working structure, and is widely applied to the fields of short-wave communication and microwave communication.

Disclosure of Invention

Therefore, it is necessary to provide an enhanced dual-polarized log-periodic antenna aiming at the problems of large loss and low gain of the polarized signal of the single-polarized log-periodic antenna.

An enhanced dual-polarized log-periodic antenna, comprising:

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;

an F-B cover layer disposed at a first end of the antenna body, a plane of the F-B cover layer being perpendicular to the spatial axis;

the first coaxial line and the second coaxial line are respectively arranged on the first gathering line and the second gathering line and comprise coaxially arranged inner conductors, insulating medium layers and outer conductor layers, and the outer conductor layers 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 gathering line and the second gathering 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 number of the F-B cover layers is two or more, and each of the F-B cover layers is disposed at the first end of the antenna body after being stacked.

In one embodiment, the F-B cover layer includes a substrate and a patch disposed on a side of the substrate proximate to the antenna body.

In one embodiment, the patch is a rectangular patch or a circular patch.

In one embodiment, a cross-shaped groove is formed in one side of the patch close to the antenna body.

In one embodiment, the enhanced dual-polarized log-periodic antenna further includes a dielectric strip disposed in an area surrounded by the first set of lines, the second set of lines, the third set of lines, and the fourth set of lines.

In one embodiment, the enhanced dual-polarized log-periodic antenna further includes two or more baluns, and each balun is connected to a different one of the first, second, third, and fourth aggregation lines.

In one embodiment, the enhanced 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;

a fourth coaxial line disposed on the fourth collective line and symmetrical to the second coaxial line with respect to the spatial axis;

first set line, third set line and set up in the first coaxial line of first coaxial line, third coaxial line, the common first antenna single polarization structure of constituteing of antenna element on first set line, the third set line input impedance with second set line, fourth set line and set up in the second coaxial line of second set line, fourth set line, the common second antenna single polarization structure's of constituteing of antenna element input impedance is 50 ohm, first coaxial line, second coaxial line, third coaxial line, fourth coaxial line's wire rod are 50 ohm coaxial lines.

In one embodiment, the opening height of the first through hole is higher than that of the second through hole.

In one embodiment, the enhanced dual-polarized log-periodic antenna further comprises a reflector plate disposed at the second end of the antenna body.

Above-mentioned strenghthened type dual polarization log periodic antenna, through adopting the cross structure to realize the dual polarization constitution of two single polarization antenna element, dual polarization log periodic antenna has been realized, reducible signal polarization loss, the gain of the horizontal perpendicular both directions of messenger's antenna is all good, F-B overburden has been set up at the first end of antenna main part, F-B overburden can constitute the F-B resonant cavity with the plane that the second end of antenna main part was located, the electromagnetic wave that the antenna main part radiated out is in-phase stack in the resonant cavity, thereby the radiation gain of strenghthened type dual polarization log periodic antenna has been improved, the set line of every antenna and the antenna element that sets up above-mentioned can all block dismouting realization simultaneously, moreover, the steam generator is simple in structure, and.

Drawings

Fig. 1 is a schematic structural diagram of an enhanced dual-polarized log-periodic antenna in an embodiment;

FIG. 2 is a partial schematic view of a coaxial wire structure according to an embodiment;

FIG. 3 is a cross-sectional view of a portion of an enhanced dual-polarized log-periodic antenna in one embodiment;

FIG. 4 is a top view of an enhanced dual-polarized log-periodic antenna according to an embodiment;

FIG. 5 is a schematic diagram of an antenna monopole structure according to an embodiment;

fig. 6 is a schematic diagram of an enhanced dual-polarized log-periodic antenna according to another embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

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," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Referring to fig. 1, the enhanced dual-polarized log periodic antenna of the present disclosure includes an antenna body 110, an antenna element 120, a first coaxial line 130 and a second coaxial line and an F-B blanket layer 190.

The antenna main body 110 includes four identical aggregation lines, which are a first aggregation line 111, a second aggregation line 112, a third aggregation line 113, and a fourth aggregation line 114, respectively, and the four aggregation lines are sequentially disposed around a spatial axis, wherein the first aggregation line 111 is disposed opposite to the third aggregation line 113, and the second aggregation line 112 is also disposed opposite to the fourth aggregation line 114. Meanwhile, a connecting line between the middle point of the first aggregation line 111 and the middle point of the third aggregation line 113 is perpendicular to a connecting line between the middle point of the second aggregation line 112 and the middle point of the fourth aggregation line 114, and the connecting lines are hung on the spatial axis, namely the four aggregation lines are not staggered, but are arranged in a length alignment manner, so that the antenna keeps relatively symmetrical and stable structure as much as possible.

First set line 111, second set line 112, third set line 113, it is provided with a plurality of antenna element 120 respectively to divide equally on the fourth set line 114, antenna element 120 can be metal strip or metal bar, and the metalwork of other shapes, for convenient the description, do not call the both ends of each set line top and bottom respectively, a plurality of antenna element 120 on arbitrary set line all is from this set line bottom to the both sides of top equidistant ground setting in proper order for the space axis in the set line in proper order of direction on top, a left side right side is in turn along the equidistant ground setting in the direction from bottom to top promptly, and the antenna element that is close to the top is shorter more, a plurality of antenna element 120 on the same set line is parallel to each other and is in the coplanar simultaneously.

The F-B cover layer 190 is disposed at a first end of the antenna body 110, the plane of the F-B cover layer 190 being perpendicular to the spatial axis. Specifically, the first end of the antenna body 110 is an end near the second ends of the first, second, third and

fourth aggregation lines

111, 112, 113 and 114. When the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114 are on the same plane, any one of the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114 may be a first end of the antenna body 110, when the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114 are not on the same plane, the highest end of the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113, and the fourth aggregation line 114 may be a first end of the antenna main body 110, the F-B cover layer 190 may be directly disposed on the first end of the antenna main body 110, or may be disposed on the first end of the antenna main body 110 through a connector, and a distance between the F-B cover layer 190 and the first end of the antenna main body 110 may be adjusted according to actual requirements.

The F-B cover layer 190 may be disposed in a non-exclusive manner, for example, the F-B cover layer 190 may be fixedly disposed at the first end of the antenna main body 110 during shipment or installation to keep the position fixed, so that the F-B cover layer 190 and the antenna main body 110 are structurally integrated, thereby avoiding interference factors caused during installation and improving the working performance. The antenna can also be arranged at the first end of the antenna main body 110 through the connecting piece, the type of the connecting piece is not unique, the connecting piece can be a foam connecting piece or a connecting column and the like, furthermore, the first end fixed on the antenna main body 110 can be disassembled through the connecting piece, the F-B covering layer 190 is installed when needed, the F-B covering layer 190 does not need to be disassembled, the use is convenient, when the F-B covering layer 190 is damaged and cannot be used, only the F-B covering layer 190 can be replaced, the integral replacement of the enhanced dual-polarized log-periodic antenna is avoided, and the maintenance.

The F-B cover layer 190 is parallel to a plane where the second end of the antenna main body 110 is located, taking the antenna main body 110 disposed on the ground as an example, the F-B cover layer 190 is a reflection surface 1, the antenna floor is a reflection surface 2, the two planes form an F-B resonant cavity (fabry-perot resonant cavity), the antenna main body 110 is located in the resonant cavity, and electromagnetic waves radiated by the antenna element 120 in the antenna main body 110 are superposed in phase in the resonant cavity, thereby improving the radiation gain of the reinforced dual-polarized log-periodic antenna. The type of the F-B cover layer 190 is not unique, for example, the F-B cover layer 190 may adopt a gradient dielectric constant cover layer, and the adoption of different dielectric constants at different positions of the cover layer can make the phase distribution curve more uniform, thereby improving the quality of the electromagnetic wave radiated by the enhanced dual-polarized log-periodic antenna. The size of the F-B cover layer 190 is not unique, in this embodiment, the thickness of the F-B cover layer 190 matches with a quarter of the wavelength of the electromagnetic wave radiated by the antenna element when propagating in the F-B cover layer 190 medium, so that the effect of increasing the gain is good, and it can be understood that the specific size of the F-B cover layer 190 may be adjusted according to actual requirements in other embodiments.

The first coaxial line 130 and the second coaxial line 140 are respectively disposed on the first collective line 111 and the second collective line 112, as shown in fig. 2, the first coaxial line 130 and the second coaxial line 140 each include an inner conductor 131, an insulating dielectric layer 132, and an outer conductor layer 133 that are coaxially disposed, and the insulating dielectric layer 132 is disposed between the inner conductor 131 and the outer conductor layer 133 to ensure that they do not contact each other. When the coaxial cable is arranged, the outer conductor layers 133 of the first coaxial line 130 and the second coaxial line 140 are respectively attached to the outer sides, far away from the space axis, of the first aggregation line 111 and the second aggregation line 112 so as to generate a potential difference.

Referring to fig. 3, the top ends of the first aggregation line 111 and the second aggregation line 112 are respectively provided with a first through hole 150 and a second through hole 160, the first through hole 150 and the second through hole 160 may have shapes and sizes corresponding to the first coaxial line 130 and the second coaxial line 140, and may also be larger or smaller than the cross section of the coaxial line, 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, and further, the inner conductor of the aggregation line connected to the through hole may further extend continuously and is connected to the aggregation line opposite to the aggregation line where the coaxial line is located through the through hole to form a feeding structure. For example, the output end of the second coaxial line 140 disposed on the second aggregation line 112 is connected to the second via 160, while the inner conductor of the output end of the second coaxial line 140 further extends through the second via 160 to be connected to the fourth coaxial line 114, and the arrangement of the first aggregation line 111 and the first coaxial line 130 is also the same, which is not described herein.

In one embodiment, the number of the F-B cover layers 190 is two or more, and each of the F-B cover layers 190 is disposed at the first end of the antenna body 110 after being stacked. Taking the first end of the antenna main body 110 as the top of the antenna main body 110, the second end of the antenna main body 110 as the bottom of the antenna main body 110, and the bottom of the antenna main body 110 as the ground proximity end, for example, stacking the plurality of F-B covering layers 190 on the top of the antenna main body 110 can make the electromagnetic waves radiated by the antenna element 120 more in-phase overlapping quantity when the electromagnetic waves propagate in the cavity formed by the plurality of F-B covering layers 190 and the plane where the second end of the antenna main body 110 is located, thereby further improving the radiation gain of the enhanced dual-polarized log-periodic antenna.

In one embodiment, the F-B cover layer 190 includes a substrate and a patch disposed on a side of the substrate proximate to the antenna body 110. The substrate is a supporting body for supporting the patches, the positions of the patches can be fixed, the normal work of the patches is guaranteed, the patches are arranged on the substrate and form a resonant cavity with a plane where the second end of the antenna main body 110 is located, the number of the patches is not unique, generally speaking, the more the number of the patches is, the smaller the size of the patches is, and the patches can be specifically selected according to actual requirements. When the number of the F-B cover layers 190 is two or more, the F-B cover layers 190 are stacked, the patches on the F-B cover layers 190 are respectively disposed on the side of the substrate close to the antenna body 110, and the F-B cover layers 190 are disposed in the same direction, which is beneficial to further improving the gain.

In one embodiment, the patch is a rectangular patch or a circular patch. Rectangular patches or circular patches can be regularly arranged on the substrate, so that the positions, working parameters and the like of the patches can be more conveniently adjusted, and the use convenience of the enhanced dual-polarized log-periodic antenna is improved.

In one embodiment, the patch has a cross-shaped slot on a side thereof adjacent to the antenna body. The cross-shaped groove plays a role in meander, so that equivalent inductance is increased, and resonant frequency is obviously reduced, so that the size of the F-B covering layer 190 can be reduced on the premise of ensuring working performance, and stronger radiation generated by the cross-shaped groove is equivalent to increase larger loss resistance, thereby greatly improving bandwidth.

In one embodiment, the enhanced dual-polarized log-periodic antenna further includes a dielectric strip disposed in an area surrounded by the first set line 111, the second set line 112, the third set line 113, and the fourth set line 114. The size of the dielectric strip is not unique, in this embodiment, the cross-sectional area of the dielectric strip is equal to the cross-sectional area of the area formed by the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114, so that the dielectric strip is fixed, the working stability is improved, the length of the dielectric strip can be equal to the distance between the antenna oscillators 120 arranged at two ends of the same aggregation line, and the material waste can not be caused on the premise of ensuring the working effect. Novel dual polarization log periodic antenna utilizes the accurate to the week model, and the oscillator is not alternately, and the array element is for every pair of oscillator, four pairs of oscillator dual polarizations, and every layer of oscillator length is different to this realizes wideer bandwidth, and the array element interval is also different. The Hansen-Wood's terminal emitting condition is realized by adding the dielectric strips in the middle of the feed collection plate, dielectric strip dielectric constants of all layers of oscillators are different, and a strong terminal emitting array is formed, so that the purpose of improving the gain of the antenna is realized.

In one embodiment, referring to fig. 6, the enhanced dual-polarization log-periodic antenna further includes more than two baluns 210, and each balun 210 is connected to a different one of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113, and the fourth aggregation line 114. Although fig. 6 does not show a specific connection manner between the antenna main body 110 and the F-B cover layer 190, the antenna main body 110 and the F-B cover layer 190 may be actually connected by a connection member. Specifically, in this embodiment, taking the example that the enhanced dual-polarization log-periodic antenna includes the first balun and the second balun, the port of the first balun is connected to the first aggregation line 111, and the port of the second balun is connected to the second aggregation line 112, and further, the port of the balun connected to the aggregation line may further extend to be connected to the aggregation line opposite to the connected aggregation line, so as to form the feeding structure. The connection relationship between the other baluns and the assembly line can be analogized, and the description is omitted here. The feed structure formed by more than two balance-unbalance converters can realize the balanced feed of the antenna oscillator and improve the working performance of the enhanced dual-polarized log-periodic antenna.

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. 1 and 4, in one embodiment, the enhanced dual-polarized log-periodic antenna further includes a third coaxial line 170 and a fourth coaxial line 180 respectively disposed on the third aggregation line 113 and the fourth aggregation line 114, and the third coaxial line 170 is symmetrical to the first coaxial line 130 about the spatial axis, and the fourth coaxial line 180 and the second coaxial line 140 are symmetrical about the spatial axis. In one embodiment, the third coaxial line 170 may also be equal in length to the first coaxial line 130, and the fourth coaxial line 180 may be equal in length to the second coaxial line 140. In another embodiment, the third coaxial line 170 is identical to the first coaxial line 130 and the fourth coaxial line 180 is identical to the second coaxial line 140. Through the coaxial lines symmetrical to the first coaxial line 130 and the second coaxial line 140, the structural symmetry of the enhanced 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. 5, in one embodiment, the input impedance of the first and

third aggregation lines

111 and 113 and the first antenna single-polarization structure formed by the first and third

coaxial lines

130 and 170 and the antenna element disposed on the first and

third aggregation lines

111 and 113 is 50 ohms. The input impedance of the second antenna single-polarization structure composed of the second collective line 112 and the fourth collective line 114, and the second coaxial line 140, the fourth coaxial line 180, and the antenna element provided on the second collective line 112 and the fourth collective line 114 is also 50 ohms. The reinforced dual-polarized log periodic antenna does not need an impedance transformer, can directly adopt a 50-ohm coaxial line for feeding, and is convenient and stable and strong in adaptability. The top feed adopts coaxial line feed, and coaxial feed is hugged closely with the assembly line and is linked together, simultaneously, also can assemble the line bottom and carry out coaxial feed. Further, in one embodiment, the wires of the first coaxial line 130, the second coaxial line 140, the third coaxial line 170, and the fourth coaxial line 180 are all 50 ohm coaxial lines.

In one embodiment, the first through hole 150 is opened closer to the top end than the second through hole 160, so that the inner conductors of the first coaxial line 130 and the second coaxial line 140 are not overlapped when being connected to the third aggregation line 113 and the fourth aggregation line 114, respectively, to avoid interference.

In one embodiment, referring to fig. 6, the dual-polarized structure antenna may further include a reflection plate 220 disposed at the second end of the antenna body. In particular, the second end of the antenna body may be a ground-proximal end, i.e. a bottom end, of the antenna body. Through setting up reflecting plate 220, can assemble the reflection away with antenna backward wave beam through reflecting plate 220 to improve the front-to-back ratio of antenna effectively, also have certain effect to improving antenna gain and directionality, improve the antenna performance.

Furthermore, when a plurality of enhanced dual-polarized log-periodic antennas are used simultaneously and the frequency bands of the enhanced dual-polarized log-periodic antennas are different, the enhanced dual-polarized log-periodic antennas in different frequency bands are placed in a crossed mode, the effective aperture area is indirectly increased, the effective radiation area is increased, and the gain 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 invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A reinforced dual-polarized log-periodic antenna, comprising:

an antenna main body including four identical aggregation lines, namely a first aggregation line, a second aggregation line, a third aggregation line and a fourth aggregation line, sequentially arranged around a spatial axis, wherein the first aggregation line is arranged opposite to the third aggregation line, the second aggregation line is arranged opposite to the fourth aggregation line, a connection line between a midpoint of the first aggregation line and a midpoint of the third aggregation line is perpendicular to a connection line between the midpoint of the second aggregation line and a midpoint of the fourth aggregation line and perpendicular to the spatial axis, and the first aggregation line, the second aggregation line, the third aggregation line and the fourth aggregation line each include 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;

2. The enhanced dual-polarization log-periodic antenna of claim 1, wherein the number of the F-B covering layers is more than two, and each of the F-B covering layers is stacked and disposed at the first end of the antenna body.

3. The enhanced dual-polarized log-periodic antenna of claim 1, wherein the F-B overlay comprises a substrate and a patch, the patch being disposed on a side of the substrate adjacent to the antenna body.

4. The enhanced dual polarized log periodic antenna of claim 3, wherein the patch is a rectangular patch or a circular patch.

5. The enhanced dual-polarized log-periodic antenna of claim 3, wherein a cross-shaped slot is formed in one side of the patch close to the antenna body.

6. The enhanced dual-polarization log-periodic antenna of claim 1, further comprising a dielectric strip disposed in an area surrounded by the first, second, third and fourth sets of lines.

7. The enhanced dual-polarization log-periodic antenna according to claim 1, further comprising more than two baluns, each balun connected to a different one of the first, second, third and fourth sets of lines, respectively.

8. The enhanced dual-polarized log-periodic antenna of claim 1, further comprising:

9. The enhanced dual-polarization log-periodic antenna of claim 1, wherein the opening height of the first through hole is higher than the opening height of the second through hole.

10. The enhanced dual polarized log periodic antenna of claim 1, further comprising a reflector plate disposed at a second end of the antenna body.