Spacing adjuster and log-periodic antenna

Abstract

The application discloses a distance adjuster and a log-periodic antenna, comprising two positioning adjusters, each of which comprises a fixed part, an adjusting rod provided with a plurality of second positioning structures at two ends of the fixed part in a third direction and a positioning part provided with a through hole, a first positioning structure being arranged on an inner surface of the through hole away from the fixed part, the two positioning adjusters being used in a relative rotation of 180 degrees, the adjusting rod of one of the two positioning adjusters being arranged in the through hole of the other and being movable along the second direction so as to insert any one of the second positioning structures on the adjusting rod and the corresponding first positioning structure together. According to the distance adjuster, the structure is simple and convenient to use, the distance between the two fixed parts can be fixed, the gap between the two vibrator arrays is reliably positioned, the distance between the two fixed parts can be adjusted, the gap between the two vibrator arrays is adjustable, and the assembly efficiency of the log-periodic antenna is improved.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more particularly to a pitch adjuster and a log-periodic antenna. Background Technology

[0002] Existing log-periodic dipole antennas consist of two sets of mirrored dipole arrays, each with a connecting line that is parallel to the other. The radiating element array is fed through these two connecting lines. The spacing between these lines affects the antenna's impedance. Therefore, during production, it is necessary to maintain and adjust the spacing at different positions of the connecting lines. Appropriately sized spacers are placed at suitable locations along the connecting lines to maintain this spacing, and then secured with nylon cable ties. This fixing method results in a fixed spacing between the spacers, requiring repeated adjustments to their positions or selection of spacers with different spacings. This adjustment process is extremely inconvenient and leads to low production efficiency. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a spacing adjuster that is simple in structure and easy to use. It can fix the spacing between two convergent lines in the second direction, ensuring reliable gap positioning between the two subarrays of a log-periodic antenna. It can also adjust the spacing between the two convergent lines in the second direction, making the gap between the two subarrays of the log-periodic antenna adjustable and improving the assembly efficiency of the log-periodic antenna.

[0004] The present invention also proposes a log-periodic antenna having the above-mentioned spacing adjuster.

[0005] According to a first aspect of the present invention, a spacing adjuster for adjusting the gap between two dipole arrays of a log-periodic antenna includes: two positioning adjustment members, each of the positioning adjustment members including a fixing part, an adjusting rod, and a positioning part; the fixing part is connected to one of the dipole arrays; the adjusting rod and the positioning part are respectively disposed at both ends of the fixing part in a third direction; the positioning part defines a through hole extending along a first direction; a first positioning structure is provided on the inner surface of the through hole away from the fixing part; the adjusting rod extends along a second direction and has a plurality of second positioning structures on a side surface opposite to the fixing part; the plurality of second positioning structures are spaced apart along the second direction; wherein the two positioning adjustment members are used by rotating 180° relative to each other; the adjusting rod of one of the two positioning adjustment members passes through the through hole of the other and is movable along the second direction, so as to insert any one of the second positioning structures on the adjusting rod into the corresponding first positioning structure in the through hole; the first direction is perpendicular to the second direction, the first direction is perpendicular to the third direction, and the second direction is perpendicular to the third direction.

[0006] According to the spacing adjuster of the present invention, by setting two positioning adjustment members for relative rotation of 180°, and setting a first positioning structure in the through hole to cooperate with the second positioning structure on the adjustment rod, the spacing between the two fixed parts in the second direction can be fixed through the mutual cooperation between the first positioning structure and the second positioning structure, so that the gap positioning between the two dipole arrays of the log-periodic antenna is reliable. By pushing the two positioning adjustment members to move relative to each other, the first positioning structure can be inserted into different second positioning structures, thereby realizing the spacing adjustment of the two fixed parts in the second direction, so that the gap between the two dipole arrays of the log-periodic antenna is adjustable. The structure is simple and easy to use, and the assembly efficiency of the log-periodic antenna can be improved.

[0007] According to some embodiments of the present invention, the fixing part defines a first slot that extends along the third direction and penetrates the fixing part in the first direction. The first slot is provided with a first mounting notch in a second direction so that the junction line of one of the two oscillator arrays passes through the first mounting notch into the first slot.

[0008] According to some embodiments of the present invention, the surface of the first slot opposite to the first mounting notch in the second direction is a first limiting surface, and the first limiting surface is recessed in the direction away from the first mounting notch to form a first limiting groove, so that the coaxial cable of the log-periodic antenna can pass through it.

[0009] According to some optional embodiments of the present invention, the positioning part includes a main frame and an adjusting pressure rod. The main frame includes two lugs protruding from the outer end face of the fixing part. The two lugs are spaced apart along a first direction. The adjusting pressure rod is disposed between the two lugs and is fixedly connected to the lugs via a connecting post. The adjusting pressure rod and the main frame together define the through hole. The first positioning structure is disposed on the adjusting pressure rod. The connecting post has torsional deformation capability. The adjusting pressure rod has a first moving position and a second moving position relative to the main frame. In the first moving position, the distance between the first positioning structure and the fixing part in the third direction is a first distance, and the first positioning structure and the second positioning structure are inserted into each other. In the second moving position, the distance between the first positioning structure and the fixing part in the third direction is a second distance, which is greater than the first distance. The first positioning structure and the second positioning structure are disengaged from the insertion engagement, and the adjusting pressure rod causes the connecting post to torsionally deform.

[0010] According to some optional embodiments of the present invention, the adjusting rod includes a positioning section and a pressing section. The positioning section and the main frame together define the through hole. The first positioning structure is disposed on the positioning section. The pressing section is connected to the end of the positioning section away from the first positioning structure in the second direction, and the pressing section extends in the second direction. The two ends of the positioning section in the first direction are respectively fixedly connected to the corresponding lugs through connecting posts.

[0011] In some optional embodiments of the present invention, the main frame, the adjusting pressure rod, and the connecting column are injection molded integral parts; or, the positioning section has an assembly hole, the main frame has a mating hole, the assembly hole and the mating hole are opposite to each other in the first direction, the connecting column passes through the assembly hole and the mating hole, the outer contour of the cross-section of the connecting column is non-circular, the assembly hole is adapted to the outer contour of the connecting column, and the mating hole is adapted to the outer contour of the connecting column.

[0012] According to a second aspect of the present invention, a log-periodic antenna includes: a first element array, comprising: a first connecting line and first elements, the first connecting line extending along a first direction, the first connecting line having a first end and a second end at its two ends in the first direction, and a plurality of first elements connected to the first connecting line and spaced apart along the first direction, wherein the size of the plurality of first elements increases sequentially in the third direction from the first end to the second end; and a second element array, comprising: a second connecting line and a second element, the second connecting line extending along the first direction and being disposed opposite to the first connecting line in the second direction, the second element being connected to the second connecting line. A plurality of second oscillators are arranged at intervals along the first direction on the assembly line. In the direction from the first end to the second end, the dimensions of the plurality of second oscillators increase sequentially in the third direction. In the first direction, the first oscillators and the second oscillators are arranged alternately. In the third direction, the first oscillators and the corresponding second oscillators are arranged symmetrically along the central axis of the second assembly line. A coaxial cable is provided, wherein the outer conductor of the coaxial cable is connected to the first assembly line, and the inner conductor of the coaxial cable is connected to the second assembly line. According to the first aspect embodiment of the present invention, the two positioning adjustment members of the spacing adjuster are respectively connected to the first assembly line and the second assembly line.

[0013] According to the log-periodic antenna of the present invention, the above-mentioned spacing adjuster has a simple structure and is easy to use. It can reliably position the gap between the two dipole arrays of the log-periodic antenna, make the gap between the two dipole arrays of the log-periodic antenna adjustable, and improve the assembly efficiency of the log-periodic antenna.

[0014] According to some embodiments of the present invention, the main body is an arc-shaped plate that protrudes away from the spacing adjuster.

[0015] According to some embodiments of the present invention, there are multiple spacing adjusters, which are spaced apart along the extension direction of the first set line; the first set line includes a first segment and a second segment arranged along the first direction, the first segment includes a first end and is connected to multiple first oscillators, the second segment includes a second end and is connected to multiple first oscillators, all the spacing adjusters are connected to the second segment, and the distance between the first segment and the second segment in the first direction is less than the distance between the second segment and the second segment in the first direction.

[0016] According to some embodiments of the present invention, the log-periodic antenna further includes: an radome and a lifting bracket, the radome defining an installation space, the first dipole array and the second dipole array both being disposed within the installation space, the lifting bracket being two in number and respectively connected to the first and second converging lines, each lifting bracket including a main body and a connecting part, the main body extending along the first direction and disposed on the side of the first converging line opposite to the second converging line, the main body being connected to the sidewall of the installation space on the corresponding side, the connecting part being two in number and connected to both ends of the main body in the first direction; one of the two connecting parts connected to the first converging line is connected to the first segment, the other is connected to the second segment, and a spacing adjuster is provided between the two connecting parts.

[0017] According to some embodiments of the present invention, the main body abuts against the side wall of the mounting space on the corresponding side, and the main body is an arc-shaped plate protruding away from the spacing adjuster.

[0018] According to some embodiments of the present invention, the fastening portion defines a second slot extending along a first direction and penetrating the fastening portion, the second slot having a second mounting notch in a second direction, so that the junction line of one of the two oscillator arrays passes through the second mounting notch and is inserted into the second slot; the surface of the second slot opposite to the second mounting notch in the second direction is a second limiting surface, the second limiting surface being recessed in a direction away from the second mounting notch to form a second limiting groove, and the coaxial cable passing through the second limiting groove.

[0019] According to some optional embodiments of the present invention, the portions where the first and second collection lines are connected to the spacing adjuster are installation positions. In the installation position, both the first and second collection lines define positioning notches, and the fixing part is engaged in the positioning notches and abuts against the sidewalls of the positioning notches on both sides in the first direction.

[0020] According to some optional embodiments of the present invention, the log-periodic antenna further includes: a reflector disposed on a second segment of the first convergent line and connected to the first convergent line and the second convergent line respectively.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of a log-periodic antenna according to some embodiments of the present invention;

[0024] Figure 2 yes Figure 1 A schematic diagram of a log-periodic antenna from another perspective;

[0025] Figure 3 yes Figure 1 A schematic diagram of part of the structure of the log-periodic antenna in the diagram;

[0026] Figure 4 yes Figure 3 Exploded view of part of the structure of the log-periodic antenna in the image;

[0027] Figure 5 yes Figure 4 A three-dimensional view of the positioning adjustment component;

[0028] Figure 6 yes Figure 5 Right view of the positioning adjustment component;

[0029] Figure 7 yes Figure 5 Top view of the positioning adjustment component;

[0030] Figure 8 yes Figure 5 A schematic diagram of the positioning adjustment component from another perspective;

[0031] Figure 9 yes Figure 1 A schematic diagram of another part of the structure of a log-periodic antenna;

[0032] Figure 10 yes Figure 9 A schematic diagram of the lifting bracket in the middle;

[0033] Figure 11 yes Figure 9 A schematic diagram of the lifting support from another perspective.

[0034] Figure label:

[0035] 100. Log-periodic antenna;

[0036] 10. Spacing adjuster; 1. Positioning adjustment component; 11. Fixing part; 111. First slot; 112. First mounting notch; 113. First limiting groove; 12. Adjusting rod; 121. Second positioning structure; 13. Positioning part; 131. Main frame; 132. Adjusting pressure rod; 1321. Positioning section; 1322. Pressing section; 133. Through hole; 134. First positioning structure; 135. Connecting column;

[0037] 20. First oscillator array; 2. First convergence line; 21. First segment; 22. Second segment; 23. First end; 24. Second end; 25. Positioning notch; 3. First oscillator;

[0038] 40. Second oscillator array; 4. Second convergence line; 41. Third segment; 42. Fourth segment; 43. Bend; 5. Second oscillator;

[0039] 60. Coaxial cable; 61. Outer conductor; 62. Inner conductor;

[0040] 70. Lifting bracket; 7. Main body; 8. Connecting part; 81. Second slot; 82. Second mounting notch; 83. Second limiting slot;

[0041] 90. Reflector. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] The spacing adjuster 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0044] Reference Figures 1-11 According to a first aspect embodiment of the present invention, the spacing adjuster 10 is used to adjust the gap between two dipole arrays of a log-periodic antenna 100, for example, referring to... Figure 1 and Figure 2The two oscillator arrays can be a first oscillator array 20 and a second oscillator array 40, respectively. The first oscillator array 20 includes a first connecting line 2 and a first oscillator 3. The first connecting line 2 extends along a first direction (refer to direction e1 in the attached figure), and the first oscillator 3 extends along a third direction (refer to direction e3 in the attached figure). The first oscillator 3 is connected to the first connecting line 2, and there are multiple first oscillators 3 spaced apart along the first direction. The second oscillator array 40 includes a second connecting line 4 and a second oscillator 5. The second connecting line 4 extends along the first direction and is arranged opposite to the first connecting line 2 in a second direction (refer to direction e2 in the attached figure). The second oscillator 5 extends along a third direction and is connected to the second connecting line 4. There are multiple second oscillators 5 spaced apart along the first direction. In the first direction, the first oscillator 3 and the second oscillator 5 are alternately arranged. In the third direction, the first oscillator 3 and the corresponding second oscillator 5 are symmetrically arranged along the central axis of the connecting line.

[0045] Reference Figures 3-8 The spacing adjuster 10 includes two positioning adjustment components 1. Each positioning adjustment component 1 includes a fixing part 11, an adjustment rod 12 and a positioning part 13. The fixing part 11 is connected to a vibrator array. For example, the fixing part 11 and the vibrator array can be connected by a snap-fit ​​connection, the fixing part 11 and the vibrator array can also be connected by a fastener connection, or the fixing part 11 and the vibrator array can also be connected by an adhesive connection.

[0046] The adjusting rod 12 and the positioning part 13 are respectively provided at both ends of the fixing part 11 in the third direction. The positioning part 13 defines a through hole 133 extending in the first direction. A first positioning structure 134 is provided on the inner surface of the through hole 133 away from the fixing part 11. The adjusting rod 12 extends in the second direction, and a plurality of second positioning structures 121 are provided on the side surface of the adjusting rod 12 away from the fixing part 11. The plurality of second positioning structures 121 are arranged at intervals in the second direction.

[0047] It should be explained that, in this application, "multiple" refers to two or more.

[0048] The two positioning adjustment components 1 are used to rotate 180° relative to each other. The adjustment rod 12 of one of the two positioning adjustment components 1 passes through the through hole 133 of the other, and the adjustment rod 12 can move in the corresponding through hole 133 along the second direction. The first positioning structure 134 in the through hole 133 passes through the second positioning structure 121 of the corresponding adjustment rod 12, so that any second positioning structure 121 on the adjustment rod 12 can be inserted and engaged with the first positioning structure 134 in the corresponding through hole 133. The first direction is perpendicular to the second direction, the first direction is perpendicular to the third direction, and the second direction is perpendicular to the third direction.

[0049] For example, the first positioning structure 134 can be formed as a triangular protrusion to facilitate the operator to push the fixing part 11 to insert the first positioning structure 134 into different second positioning structures 121. For example, the second positioning structure 121 can also be formed as a triangular groove to facilitate the operator to push the fixing part 11 to push the first positioning structure 134, thus one second positioning structure 121, into another second positioning structure 121.

[0050] When assembling the log-periodic antenna 100, the two positioning adjustment parts 1 can be rotated 180° relative to each other first. Then, one positioning adjustment part 1 is connected to the first connecting line 2, and the adjustment rod 12 of the positioning adjustment part 1 is set towards the second connecting line 4. The other positioning adjustment part 1 is connected to the second connecting line 4, and the adjustment rod 12 of the other positioning adjustment part 1 is set towards the first connecting line 2. Then, the adjustment rod 12 of one positioning adjustment part 1 is inserted into the through hole 133 of the other, and the first positioning structure 134 is inserted together with one of the second positioning structures 121 to complete the connection and fixation of the two positioning adjustment parts 1, and the two vibrator arrays are fixed relative to each other in the second direction.

[0051] The cooperation between the first positioning structure 134 and the second positioning structure 121 can limit the two positioning adjustment members 1 in the second direction, thereby fixing the distance between the two fixed parts 11 in the second direction. This effectively reduces the probability that the size of the two fixed parts 11 will change in the second direction due to the movement of one positioning adjustment member 1 relative to the other, making the positioning of the two fixed parts 11 in the second direction reliable. This also makes the gap positioning between the two dipole arrays of the log-periodic antenna 100 reliable, effectively ensuring the working performance of the log-periodic antenna 100.

[0052] When the spacing between the two oscillator arrays in the second direction needs to be small, the two fixing parts 11 can be pushed towards each other along the second direction, and the first positioning structure 134 can be inserted together with the second positioning structure 121 which is closer to the fixing part 11. This reduces the spacing between the two fixing parts 11 in the second direction, thus reducing the spacing between the two oscillator arrays in the second direction, making the spacing between the two oscillator arrays in the second direction smaller. When the spacing between the two oscillator arrays in the second direction needs to be large, the two fixing parts 11 can be pushed away from each other along the second direction, and the first positioning structure 134 can be inserted together with the second positioning structure 121 which is farther away from the fixing part 11. This expands the spacing between the two fixing parts 11 in the second direction, thus expanding the spacing between the two oscillator arrays in the second direction, making the spacing between the two oscillator arrays in the second direction larger.

[0053] This allows the first positioning structure 134 to be inserted into different second positioning structures 121 by pushing the two positioning adjustment parts 1 to move relative to each other or to move the two positioning adjustment parts 1 in opposite directions. This enables the spacing between the two fixed parts 11 in the second direction to be adjusted, making the gap between the two dipole arrays of the log-periodic antenna 100 adjustable. The structure is simple and easy to use, and it can improve the assembly efficiency of the log-periodic antenna 100.

[0054] According to the spacing adjuster 10 of the present invention, by setting two positioning adjustment members 1 for relative rotation of 180°, and setting a first positioning structure 134 in the through hole 133 to cooperate with the second positioning structure 121 on the adjustment rod 12, the spacing between the two fixed parts 11 in the second direction can be fixed through the mutual cooperation between the first positioning structure 134 and the second positioning structure 121, so that the gap positioning between the two dipole arrays of the log-periodic antenna 100 is reliable. By pushing the two positioning adjustment members 1 to move relative to each other, the first positioning structure 134 can be inserted into different second positioning structures 121, thereby realizing the spacing adjustment of the two fixed parts 11 in the second direction, so that the gap between the two dipole arrays of the log-periodic antenna 100 is adjustable. The structure is simple and easy to use, and the assembly efficiency of the log-periodic antenna 100 can be improved.

[0055] Reference Figures 3-8 According to some embodiments of the present invention, the fixing part 11 defines a first slot 111, the first slot 111 extends along a third direction and penetrates the fixing part 11 in a first direction, and the first slot 111 is provided with a first mounting notch 112 in a second direction so that the connecting line of one of the two oscillator arrays passes through the first mounting notch 112 and is inserted into the first slot 111.

[0056] It should be understood that the positioning adjustment member 1 in this application needs to be fixed relative to the fixing part 11. Therefore, the size of the first mounting notch 112 in the third direction should be smaller than the size of the part of the assembly line that mates with it in the third direction. That is to say, when the fixing part 11 is attached to the assembly line, the fixing part 11 needs to be bent to enlarge the size of the first mounting notch 112 in the three directions so that the assembly line can pass through the first mounting notch 112 and be inserted into the first slot 111.

[0057] The snap-fit ​​connection method is simple in structure and easy to use, making it convenient for operators to connect the fixing part 11 to the vibrator array, thereby improving the production efficiency of the log-periodic antenna 100.

[0058] Reference Figures 3-8According to some embodiments of the present invention, the surface of the first slot 111 opposite to the first mounting notch 112 in the second direction is a first limiting surface. The first limiting surface is recessed in the direction away from the first mounting notch 112 to form a first limiting groove 113, so that the coaxial cable 60 of the log-periodic antenna 100 can pass through it. For example, the coaxial cable 60 can be stripped of its outer sheath and passed through the first limiting groove 113, so that the outer conductor 61 of the coaxial cable is exposed and connected to the connecting line, thereby enabling the coaxial cable to feed one of the elements of the array.

[0059] It should be understood that the first limiting groove 113 is used to position the coaxial cable 60. Therefore, in order to reduce the risk of the coaxial cable 60 shaking in the first limiting groove 113, a larger coaxial cable 60 should be selected so that part of the coaxial cable 60 can be inserted into the first limiting groove 113, so that the connecting wire can press against the coaxial cable 60 to achieve the connection and fixation of the coaxial cable 60.

[0060] By setting the first limiting groove 113 to position the coaxial cable 60, the risk of the coaxial cable 60 shaking can be effectively reduced, so that the coaxial cable 60 can be reliably fixed relative to the connecting line, so that the coaxial cable 60 can reliably feed the connecting line, and so that the log-periodic antenna 100 can work reliably. At the same time, this can effectively reduce the changes in antenna performance caused by the positional changes of the coaxial cable 60 relative to the connecting line, and effectively ensure the working performance of the log-periodic antenna 100.

[0061] Reference Figure 3 , Figures 5-8 According to some optional embodiments of the present invention, the positioning part 13 includes a main frame 131 and an adjusting rod 132. The main frame 131 includes two lugs protruding from the outer end face of the fixing part 11. The two lugs are spaced apart along a first direction. The adjusting rod 132 is disposed between the two lugs and is fixedly connected to the lugs through a connecting post 135. The adjusting rod 132 and the main frame 131 together define a through hole 133. The first positioning structure 134 is disposed on the adjusting rod 132.

[0062] The connecting column 135 has torsional deformation capability, and the adjusting rod 132 has a first moving position and a second moving position relative to the main frame 131. In the first moving position, the distance between the first positioning structure 134 and the fixing part 111 in the third direction is the first distance, and the first positioning structure 134 and the second positioning structure 121 are inserted into each other. In the second moving position, the distance between the first positioning structure 134 and the fixing part 11 in the third direction is the second distance, which is greater than the first distance. The first positioning structure 134 and the second positioning structure 121 are disengaged from the insertion and engagement, and the adjusting rod 132 drives the connecting column 135 to torsion and deform.

[0063] When it is necessary to adjust the distance between the two fixed parts 11 in the second direction, the distance between the first positioning structure 134 and the fixed part 11 in the third direction can be increased by adjusting the adjusting rod 132 to the second movement position. The first positioning structure 134 can be pulled out from the second positioning structure 121. Then, the positioning adjustment member 1 can be moved towards each other or away from each other. When the distance between the two fixed parts 11 in the second direction is adjusted to the preset position, the pressing part can be released. The torsional deformation force of the connecting column 135 can be used to insert the first positioning structure 134 and the corresponding second positioning structure 121 together to complete the relative positioning of the two positioning adjustment members 1.

[0064] This allows the operator to apply force to the adjusting rod 132 when holding the positioning adjustment component 1, thus completing the operation of pulling the first positioning structure 134 out of the second positioning structure 121. The structure is simple and easy to operate, so that the operator does not need to use a lot of force to push the positioning adjustment component 1 to change the distance between the two fixed parts 11 in the second direction. This makes it easier to adjust the distance between the two fixed parts 11 in the second direction, and makes it easier to adjust the distance between the two vibrator arrays in the second direction. This can effectively improve the assembly efficiency of the log-periodic antenna 100.

[0065] Reference Figure 3 , Figures 5-8 According to some optional embodiments of the present invention, the adjusting rod 132 includes a positioning section 1321 and a pressing section 1322. The positioning section 1321 and the main frame 131 together define a through hole 133. A first positioning structure 134 is disposed on the positioning section 1321. The pressing section 1322 is connected to the end of the positioning section 1321 away from the first positioning structure 134 in a second direction. That is, the pressing section 1322 is connected to the end of the positioning section 1321 near the first mounting notch 112 in a second direction, and the pressing section 1322 extends in the second direction. The two ends of the positioning section 1321 in the first direction are respectively fixedly connected to the corresponding lugs through connecting posts 135.

[0066] When force is applied to the pressing section 1322, the pressing section 1322 can transmit the force to the connecting post 135, causing the connecting post 135 to undergo torsional deformation, storing energy, and causing the positioning section 1321 to tilt in the opposite direction of the applied force, so that the first positioning structure 134 is pulled out from the second positioning structure 121; after the force applied to the pressing section 1322 is removed, the connecting post 135 can rotate in the opposite direction to release energy, so that the positioning section 1321 drives the first positioning structure 134 to insert into the second positioning structure 121.

[0067] When it is necessary to adjust the distance between the two fixing parts 11 in the second direction, the pressing section 1322 can be pressed towards the fixing part 11 to lift the positioning section 1321 away from the fixing part 11, and the first positioning structure 134 can be pulled out from the second positioning structure 121. Then, the positioning adjustment member 1 can be moved towards or away from each other. When the distance between the two fixing parts 11 in the second direction is adjusted to the preset position, the pressing part can be released, and the first positioning structure 134 can be inserted into the corresponding second positioning structure 121 by using the rebound force of the connecting post 135, thus completing the relative positioning of the two positioning adjustment members 1.

[0068] This design allows the operator to apply force to the pressing part when holding the positioning adjustment component 1, thus completing the extraction of the first positioning structure 134 from the second positioning structure 121. The structure is simple and easy to operate, eliminating the need for the operator to use significant force to push the positioning adjustment component 1 to change the spacing between the two fixed parts 11 in the second direction. This makes adjusting the spacing between the two fixed parts 11 and the two vibrator arrays in the second direction more convenient, effectively improving the assembly efficiency of the log-periodic antenna 100. Simultaneously, by setting the pressing section 1322 of the adjusting lever 132 to extend along the second direction, the size of the positioning adjustment component 1 in the third direction can be reduced. Optionally, the pressing section 1322 can also extend in the third direction away from the fixed part 11.

[0069] For example, refer to Figure 3 and Figure 8 There can be multiple first positioning structures 134, which are arranged sequentially along the second direction. Each of the multiple first positioning structures 134 can be inserted into the second positioning structure 121. This allows the multiple first positioning structures 134 and the multiple second positioning structures 121 to form a structure in which two racks mesh with each other, making the connection and fixation between the positioning part 13 and the adjusting rod 12 more reliable. This more effectively reduces the probability that the two fixing parts 11 will change in size in the second direction due to the movement of one positioning adjusting part 1 relative to the other. This makes the positioning of the two fixing parts 11 in the second direction reliable, and makes the gap positioning between the two dipole arrays of the log-periodic antenna 100 reliable, effectively ensuring the working performance of the log-periodic antenna 100.

[0070] Reference Figure 3 , Figure 5 and Figure 8 In some optional embodiments of the present invention, the main frame 131, the adjusting rod 132, and the connecting column 135 are injection molded integral parts; for example, the positioning adjustment part 1 can be an injection molded integral part. This reduces the number of parts in the positioning adjustment part 1, improves the production efficiency of the positioning adjustment part 1, and reduces the production cost of the positioning adjustment part 1.

[0071] In some optional embodiments of the present invention, the positioning segment 1321 has an assembly hole, and the main frame 131 has a mating hole. The assembly hole and the mating hole are opposite to each other in a first direction. The connecting post 135 passes through the assembly hole and the mating hole. The outer contour of the cross-section of the connecting post 135 is non-circular. The assembly hole and the outer contour of the connecting post 135 are adapted to each other. For example, the outer contour of the cross-section of the connecting post 135 can be rectangular, triangular, polygonal, or semi-circular.

[0072] This also allows for torsional deformation of the connecting column 135 under stress, as well as springback rotation of the connecting column 135 after the pressing force is released. At the same time, if any of the main pile frame, connecting column 135, or adjusting rod 132 is damaged, only the damaged part needs to be replaced, without having to replace the entire positioning adjustment component 1, effectively reducing the maintenance cost of the positioning adjustment component 1 and the maintenance cost of the spacing adjuster 10.

[0073] Reference Figures 1-4 , Figure 9 According to a second aspect of the present invention, a log-periodic antenna 100 includes a first dipole array 20, a second dipole array 40, and a coaxial cable 60. The first dipole array 20 includes a first connecting line 2 and a first dipole 3. The first connecting line 2 extends along a first direction, and the two ends of the first connecting line 2 in the first direction are a first end 23 and a second end 24, respectively. The first dipole 3 is connected to the first connecting line 2, and there are multiple first dipoles 3 spaced apart along the first direction. In the direction from the first end 23 to the second end 24, the size of the multiple first dipoles 3 increases sequentially in the third direction.

[0074] The second oscillator array 40 includes a second gathering line 4 and a second oscillator 5. The second gathering line 4 extends along a first direction and is arranged opposite to the first gathering line 2 in a second direction. The second oscillator 5 is connected to the second gathering line 4, and there are multiple second oscillators 5 spaced apart along the first direction. In the direction from the first end 23 to the second end 24, the size of the multiple second oscillators 5 increases sequentially in a third direction. In the first direction, the first oscillator 3 and the second oscillator 5 are arranged alternately. In the third direction, the first oscillator 3 and the corresponding second oscillator 5 are symmetrically arranged along the central axis of the second gathering line 4.

[0075] The outer conductor 61 of the coaxial cable 60 is connected to the first connecting line 2, and the inner conductor 62 of the coaxial cable 60 is connected to the second connecting line 4. According to the spacing adjuster 10 of the first aspect embodiment described above, the two positioning adjustment members 1 of the spacing adjuster 10 are respectively connected to the first connecting line 2 and the second connecting line 4. For example, the second connecting line 4 bends towards the first connecting line 2 at a portion of the second segment 22 to form a bend 43, the bend 43 extending to the side of the first connecting line 2 away from the second connecting line 4, and the portion of the bend 43 located on the side of the first connecting line 2 away from the second connecting line 4 is connected to the inner conductor 62 of the coaxial cable 60.

[0076] When assembling the log-periodic antenna 100, the two positioning adjustment parts 1 can be rotated 180° relative to each other first. Then, one positioning adjustment part 1 is connected to the first connecting line 2, and the adjustment rod 12 of the positioning adjustment part 1 is set towards the second connecting line 4. The other positioning adjustment part 1 is connected to the second connecting line 4, and the adjustment rod 12 of the other positioning adjustment part 1 is set towards the first connecting line 2. Then, the adjustment rod 12 of one positioning adjustment part 1 is inserted into the through hole 133 of the other, and the first positioning structure 134 is inserted together with one of the second positioning structures 121 to complete the connection and fixation of the two positioning adjustment parts 1, and the two vibrator arrays are fixed relative to each other in the second direction.

[0077] When the spacing between the first converging line 2 and the second converging line 4 in the second direction needs to be set to be small, the two fixing parts 11 can be pushed towards each other along the second direction, and the first positioning structure 134 can be inserted into the second positioning structure 121 which is closer to the fixing part 11, thereby reducing the spacing between the two fixing parts 11 in the second direction and reducing the spacing between the two oscillator arrays in the second direction, so that the spacing between the first converging line 2 and the second converging line 4 in the second direction is small. When the spacing between the first converging line 2 and the second converging line 4 in the second direction needs to be set to be large, the two fixing parts 11 can be pushed away from each other along the second direction, and the first positioning structure 134 can be inserted into the second positioning structure 121 which is further away from the fixing part 11, thereby increasing the spacing between the two fixing parts 11 in the second direction and increasing the spacing between the two oscillator arrays in the second direction, so that the spacing between the first converging line 2 and the second converging line 4 in the second direction is large.

[0078] According to the log-periodic antenna 100 of the present invention, the above-mentioned spacing adjuster 10 has a simple structure and is easy to use. It can make the gap positioning between the two dipole arrays of the log-periodic antenna 100 reliable, make the gap between the two dipole arrays of the log-periodic antenna 100 adjustable, and improve the assembly efficiency of the log-periodic antenna 100.

[0079] Reference Figure 1 and Figure 2According to some embodiments of the present invention, there are multiple spacing adjusters 10, which are spaced apart along the extension direction of the first convergence line 2. The first convergence line 2 includes a first segment 21 and a second segment 22 arranged along a first direction. The first segment 21 includes a first end 23 and is connected to multiple first vibrators 3. The second segment 22 includes a second end 24 and is connected to multiple first vibrators 3. For example, the portion of the second convergence line 4 opposite to the first segment 21 in a second direction is the third segment 41, and the portion of the second convergence line 4 opposite to the second segment 22 in a second direction is the fourth segment 42. All spacing adjusters 10 are connected to the second segment 22, that is, no spacing adjusters 10 are provided on the first segment 21. The distance of the first segment 21 in the first direction is less than the distance of the second segment 22 in the first direction.

[0080] By using multiple spacing adjusters 10 to position the second segment 22 of the first gathering line 2 and the fourth segment 42 of the second gathering line 4, the second segment 22 of the first gathering line 2 and the fourth segment 42 of the second gathering line 4 can be reliably positioned, making the positioning of the second segment 22 of the first gathering line 2 and the fourth segment 42 of the second gathering line 4 in the second direction relatively reliable.

[0081] Meanwhile, since the distance of the first segment 21 is relatively short, the cantilever length of the first segment 21 is relatively short, and no spacing adjuster 10 is set on the first segment 21. This can prevent the force on the first segment 21 of the first gathering line 2 from being too heavy, effectively reducing the risk of deformation or vibration of the first segment 21, and making the positioning of the first segment 21 of the first gathering line 2 and the third segment 41 of the second gathering line 4 in the second direction relatively reliable.

[0082] Reference Figures 9-11 According to some embodiments of the present invention, the portion of the second concentric line 4 opposite to the first segment 21 in the second direction is the third segment 41, and the portion of the second concentric line 4 opposite to the second segment 22 in the second direction is the fourth segment 42; for example, the bend 43 may be connected to the end of the third segment 41 that is away from the fourth segment 42 in the first direction.

[0083] The log-periodic antenna 100 further includes: an antenna radome and a lifting bracket 70. The antenna radome defines an installation space. The first element array 20 and the second element array 40 are both located within the installation space. There are two lifting brackets 70, which are respectively connected to the first connecting line 2 and the second connecting line 4. Each lifting bracket 70 includes a main body 7 and a connecting part 8. The main body 7 extends along a first direction and is located on the side of the first connecting line 2 away from the second connecting line 4. The main body 7 is connected to the side wall of the installation space on the corresponding side. For example, the main body 7 can be connected to the side wall of the installation space on the corresponding side by snap-fit ​​connection, or by fastening connection, or by abutment connection.

[0084] There are two fastening parts 8, and the two fastening parts 8 are connected to the two ends of the main body part 7 in the first direction. One of the two fastening parts 8 connected to the first connecting line 2 is connected to the first segment 21, and the other of the two fastening parts 8 connected to the first connecting line 2 is connected to the second segment 22. A spacing adjuster 10 is provided between the two fastening parts 8; that is, the fastening part 8 connected to the second segment 22 is located between the two spacing adjusters 10.

[0085] This allows the lifting bracket 70 connected to the first connecting line 2 to connect and fix the side wall of the antenna radome on the corresponding side of the first connecting line 2, and to connect and fix the side wall of the antenna radome on the corresponding side of the first segment 21, thereby reducing the risk of deformation or vibration of the first segment 21, making the relative positioning of the first segment 21 and the second segment 22 of the first connecting line 2 in the second direction more reliable, and improving the reliability of the log-periodic antenna 100.

[0086] It should be understood that the first oscillator array 20 and the second oscillator array 40 have similar structures. When the lifting bracket 70 is connected to the second connecting line 4, one of the two connecting parts 8 connected to the second connecting line 4 is connected to the third segment 41, and the other of the two connecting parts 8 connected to the second connecting line 4 is connected to the fourth segment 42. A spacing adjuster 10 is provided between the two connecting parts 8.

[0087] This allows the lifting bracket 70 connected to the second connecting line 4 to connect and fix the side wall of the antenna radome on the corresponding side of the second connecting line 4, and to connect and fix the third segment 41 on the corresponding side of the antenna radome, thereby reducing the risk of deformation or vibration of the third segment 41, making the relative positioning of the third segment 41 and the fourth segment 42 of the second connecting line 4 in the second direction more reliable, and improving the reliability of the log-periodic antenna 100.

[0088] Reference Figure 10 and Figure 11According to some embodiments of the present invention, the main body 7 abuts against the side wall of the corresponding mounting space, forming an abutment connection. This eliminates the need for additional connecting structures. By inserting the first transducer array 20, the second transducer array 40, the spacing adjuster 10, and the lifting bracket 70 into the mounting space, the lifting bracket 70 connected to the first connecting line 2 can be engaged between the first connecting line 2 and the side wall of the corresponding antenna radome, thus achieving the positioning function of the lifting bracket 70 for the first connecting line 2. Similarly, the lifting bracket 70 connected to the second connecting line 2 can be engaged between the second connecting line 4 and the side wall of the corresponding antenna radome, thus achieving the positioning function of the lifting bracket 70 for the second connecting line 4. The structure is simple and easy to use.

[0089] The main body 7 is an arc-shaped plate protruding from the spacing adjuster 10. When the two connecting parts 8 are connected to the connecting line, the main body 7 has a certain tension, so that the main body 7 on the first connecting line 2 can apply force to the first segment 21 through the connecting parts 8, so that the first segment 21 is reliably suspended relative to the second segment 22, and the positioning of the first segment 21 relative to the second segment 22 is reliable; the main body 7 on the second connecting line 4 can apply force to the third segment 41 through the connecting parts 8, so that the third segment 41 is reliably suspended relative to the fourth segment 42, and the positioning of the third segment 41 relative to the fourth segment 42 is reliable, thereby improving the reliability of the log-periodic antenna 100.

[0090] Reference Figure 10 and Figure 11 According to some embodiments of the present invention, the fastening part 8 defines a second slot 81, the second slot 81 extends along a third direction and penetrates the fastening part 8 along a first direction, and the second slot 81 is provided with a second mounting notch 82 in a second direction so that the connecting line of one of the two oscillator arrays passes through the second mounting notch 82 into the second slot 81.

[0091] It should be understood that the lifting bracket 70 in this application needs to be fixed relative to the first assembly line 2 using the fastening part 8. Therefore, the size of the second mounting notch 82 in the third direction should be smaller than the size of the assembly line and its mating part in the third direction. In other words, when the fastening part 8 is snapped onto the assembly line, the fastening part 8 needs to be bent to enlarge the size of the second mounting notch 82 in the three directions so that the assembly line can pass through the second mounting notch 82 and snap into the second slot 81.

[0092] The surface of the second slot 81 opposite to the second mounting notch 82 in the second direction is a second limiting surface. The second limiting surface is recessed in the direction away from the second mounting notch 82 to form a second limiting groove 83, in which the coaxial cable 60 passes. For example, the coaxial cable 60 can be stripped of its outer sheath and passed through the second limiting groove 83, so that the outer conductor 61 of the coaxial cable 60 is exposed and connected to the connecting wire, thereby enabling the coaxial cable 60 to feed power to one of the vibrator arrays.

[0093] It should be understood that the second limiting groove 83 is used to position the coaxial cable 60. Therefore, in order to reduce the risk of the coaxial cable 60 shaking in the second limiting groove 83, a larger coaxial cable 60 should be selected so that part of the coaxial cable 60 can be inserted into the second limiting groove 83, so that the connecting wire can press against the coaxial cable 60 to achieve the connection and fixation of the coaxial cable 60.

[0094] By setting the second limiting groove 83 to position the coaxial cable 60, the risk of the coaxial cable 60 shaking can be effectively reduced, allowing the coaxial cable 60 to be reliably fixed relative to the connecting line. This reduces the risk of the inner conductor 62 of the coaxial cable 60 shaking and detaching from the second connecting line 4, ensuring that the coaxial cable 60 can reliably feed the first connecting line 2 and the second connecting line 4, thus making the log-periodic antenna 100 work reliably. At the same time, this effectively reduces the changes in antenna performance caused by the positional variation of the coaxial cable 60 relative to the connecting line, effectively ensuring the working performance of the log-periodic antenna 100.

[0095] Reference Figure 4 According to some optional embodiments of the present invention, the portions where the first connecting line 2 and the second connecting line 4 are connected to the spacing adjuster 10 are the installation positions. In the installation positions, both the first connecting line 2 and the second connecting line 4 define positioning notches 25. The fixing part 11 is engaged within the positioning notch 25, and the fixing part 11 abuts against the sidewalls of the positioning notch 25 on both sides in the first direction. This allows the spacing adjuster 10 to be limited in the first direction, ensuring reliable positioning of the spacing adjuster 10 relative to the connecting lines in the first direction. This reduces the risk of the two vibrator arrays fluttering due to movement of the spacing adjuster 10 in the first direction, and improves the reliability of the log-periodic antenna 100.

[0096] Reference Figure 1 and Figure 2According to some optional embodiments of the present invention, the log-periodic antenna 100 further includes a reflector 90, which is disposed on the second segment 22 of the first connecting line 2 and is connected to the first connecting line 2 and the second connecting line 4. For example, the reflector 90 can be a metal component. The reflector 90 can provide some support for the first connecting line 2 and the second connecting line 4, making the first dipole array 20 and the second dipole array 40 relatively fixed and reliable. At the same time, the reflector 90 can reflect a portion of the radiation generated by the log-periodic antenna 100 from the first end 23 to the second end 24, thereby improving the gain of the log-periodic antenna 100.

[0097] In the description of this invention, it should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0098] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0099] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0100] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A spacing adjuster for adjusting the gap between two dipole arrays of a log-periodic antenna, characterized in that, include: Two positioning adjustment components, each of which includes a fixing part, an adjusting rod, and a positioning part. The fixing part is connected to one of the oscillator arrays. The adjusting rod and the positioning part are respectively disposed at both ends of the fixing part in a third direction. The positioning part defines a through hole extending in a first direction. A first positioning structure is provided on the inner surface of the through hole away from the fixing part. The adjusting rod extends in a second direction and has a plurality of second positioning structures on a side surface opposite to the fixing part. The plurality of second positioning structures are spaced apart in the second direction. The two positioning adjustment components are used to rotate 180° relative to each other. The adjustment rod of one of the two positioning adjustment components passes through the through hole of the other and is movable along the second direction, so as to connect any of the second positioning structures on the adjustment rod with the first positioning structure in the corresponding through hole. The first direction is perpendicular to the second direction, the first direction is perpendicular to the third direction, and the second direction is perpendicular to the third direction.

2. The spacing adjuster according to claim 1, characterized in that, The fixing part defines a first slot, which extends along the third direction and penetrates the fixing part in the first direction. The first slot has a first mounting notch in the second direction so that the junction line of one of the two oscillator arrays passes through the first mounting notch into the first slot.

3. The spacing adjuster according to claim 2, characterized in that, The surface of the first slot opposite to the first mounting notch in the second direction is a first limiting surface. The first limiting surface is recessed in the direction away from the first mounting notch to form a first limiting groove, so that the coaxial cable of the log-periodic antenna can pass through it.

4. The spacing adjuster according to any one of claims 1-3, characterized in that, The positioning part includes a main frame and an adjusting pressure rod. The main frame includes two lugs protruding from the outer end face of the fixing part. The two lugs are spaced apart along a first direction. The adjusting pressure rod is disposed between the two lugs and is fixedly connected to the lugs by a connecting post. The adjusting pressure rod and the main frame together define the through hole. The first positioning structure is disposed on the adjusting pressure rod. The connecting column has torsional deformation capability, and the adjusting pressure rod has a first moving position and a second moving position relative to the main frame. In the first moving position, the distance between the first positioning structure and the fixing part in the third direction is a first distance, and the first positioning structure and the second positioning structure are inserted into each other. In the second moving position, the distance between the first positioning structure and the fixing part in the third direction is a second distance, which is greater than the first distance. The first positioning structure and the second positioning structure are disengaged from the insertion and engagement, and the adjusting pressure rod drives the connecting column to torsion and deform.

5. The spacing adjuster according to claim 4, characterized in that, The adjusting rod includes a positioning section and a pressing section. The positioning section and the main frame together define the through hole. The first positioning structure is disposed on the positioning section. The pressing section is connected to the end of the positioning section away from the first positioning structure in the second direction, and the pressing section extends in the second direction. The two ends of the positioning section in the first direction are respectively fixedly connected to the corresponding support lugs through connecting posts.

6. The spacing adjuster according to claim 5, characterized in that, The main frame, the adjusting pressure rod, and the connecting column are injection molded integral parts; Alternatively, the positioning section has an assembly hole, the main frame has a mating hole, the assembly hole and the mating hole are opposite to each other in the first direction, the connecting column passes through the assembly hole and the mating hole, the outer contour of the cross-section of the connecting column is non-circular, the assembly hole is adapted to the outer contour of the connecting column, and the mating hole is adapted to the outer contour of the connecting column.

7. A log-periodic antenna, characterized in that, include: The first oscillator array includes: a first connecting line and a first oscillator. The first connecting line extends along the first direction. The two ends of the first connecting line in the first direction are a first end and a second end, respectively. The first oscillator is connected to the first connecting line and is a plurality of them spaced apart along the first direction. In the direction from the first end to the second end, the size of the plurality of first oscillators increases sequentially in the third direction. The second oscillator array includes: a second convergent line and a second oscillator. The second convergent line extends along the first direction and is arranged opposite to the first convergent line in the second direction. The second oscillators are connected to the second convergent line and are a plurality of them spaced apart along the first direction. In the direction from the first end to the second end, the size of the plurality of second oscillators increases sequentially in the third direction. The number of second oscillators is the same as the number of first oscillators and they correspond one-to-one. In the first direction, the first oscillators and second oscillators located on the same side of the second convergent line in the third direction are alternately arranged. In the third direction, the first oscillators and the corresponding second oscillators are symmetrically arranged along the central axis of the second convergent line. A coaxial cable, wherein the outer conductor of the coaxial cable is connected to the first bundled wire, and the inner conductor of the coaxial cable is connected to the second bundled wire; According to any one of claims 1-6, the two positioning adjustment members of the spacing adjuster are respectively connected to the first assembly line and the second assembly line.

8. The log-periodic antenna according to claim 7, characterized in that, The spacing adjusters are multiple and are arranged at intervals along the extension direction of the first set line; The first set line includes a first segment and a second segment arranged along the first direction. The first segment includes a first end and is connected to a plurality of first oscillators. The second segment includes a second end and is connected to a plurality of first oscillators. All the spacing adjusters are connected to the second segment. The distance between the first segment and the second segment in the first direction is less than the distance between the second segment and the second segment in the first direction.

9. The log-periodic antenna according to claim 8, characterized in that, Also includes: The antenna radome defines an installation space. The first and second vibrator arrays are both located within the installation space. There are two lifting brackets, which are respectively connected to the first and second assembly lines. Each lifting bracket includes a main body and a connecting part. The main body extends along the first direction and is located on the side of the first assembly line away from the second assembly line. The main body is connected to the side wall of the installation space on the corresponding side. There are two connecting parts, which are connected to the two ends of the main body in the first direction. One of the two connecting parts connected to the first assembly line is connected to the first segment, and the other is connected to the second segment, and a spacing adjuster is provided between the two connecting parts.

10. The log-periodic antenna according to claim 9, characterized in that, The main body abuts against the side wall of the mounting space on the corresponding side, and the main body is an arc-shaped plate that protrudes away from the spacing adjuster.

11. The log-periodic antenna according to claim 9, characterized in that, The connecting part defines a second slot, the second slot extends along the third direction and penetrates the connecting part along the first direction, and the second slot is provided with a second mounting notch in the second direction so that the junction line of one of the two oscillator arrays passes through the second mounting notch and is inserted into the second slot; The surface of the second slot opposite to the second mounting notch in the second direction is the second limiting surface. The second limiting surface is recessed in the direction away from the second mounting notch to form a second limiting groove, and the coaxial cable passes through the second limiting groove.

12. The log-periodic antenna according to any one of claims 7-11, characterized in that, The locations where the first and second collection lines are connected to the spacing adjuster are the installation positions. In the installation positions, both the first and second collection lines define positioning notches. The fixing part is engaged within the positioning notches and abuts against the side walls of the positioning notches on both sides in the first direction.

13. The log-periodic antenna according to any one of claims 7-11, characterized in that, Also includes: A reflector is disposed at the second segment of the first collection line and is connected to the first collection line and the second collection line respectively.

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