Broadband log-periodic antenna

Abstract

The utility model relates to the technical field of antennas, in particular to a broadband log-periodic antenna, which comprises two main rods and a plurality of fixing frames used for fixing the two main rods. The bottom ends of the two main rods are jointly provided with a fixing base and an angle adjusting structure, and the angle adjusting structure is used for adjusting the angles between the two main rods and the fixing base. The top ends of the two main rods are jointly provided with a feed structure, and the feed structure is covered with a waterproof structure. A radio frequency connector is installed at the bottom end of one main rod, one main rod is hollow and is provided with a cable in a penetrating mode, one end of the cable is connected to the feed structure, and the other end of the cable is connected to the radio frequency connector; a plurality of groups of vibrator pairs are sequentially mounted on the outer sides of the two main rods at intervals in the length direction, and the lengths of the plurality of groups of vibrator pairs are gradually increased from the bottom ends to the top ends of the main rods. According to the utility model, the technical problems of poor adjustability of the mounting angle and insufficient structural durability of the conventional antenna are solved, and the antenna can be ensured to continuously and efficiently operate in various extreme environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antenna, especially a kind of wideband log-periodic antenna. BACKGROUND

[0002] Wideband log-periodic antenna is a non-frequency variable antenna, and its impedance, directional diagram, gain, standing wave ratio and other electrical characteristics change periodically with the logarithm of frequency, and remain basically unchanged in a very wide frequency band. Due to its wide frequency band, high gain and directivity, it has become one of the important antenna types in modern wireless communication field.

[0003] Although wideband log-periodic antenna has the characteristics of wideband reception and high efficiency radiation, it still faces some problems to be solved in practical application. First, its installation mechanism limits flexibility: the main rod with a sequence of oscillators is directly fixed on the electric pole through the mounting seat, which makes the installation angle of the main rod unable to be adjusted according to actual needs. Since the signal receiving effect depends largely on the orientation of the oscillator, the fixed installation angle often leads to the oscillator not being at the best receiving angle, thereby affecting the overall receiving efficiency and signal quality of the antenna.

[0004] Secondly, the main rod lacks necessary waterproof and dustproof facilities in structure, which is a defect that cannot be ignored. In the complex outdoor environment, the feeding part at the top of the main rod is directly exposed to wind, rain, dust and other harsh conditions, and lacks effective protection. In the long run, such exposure not only accelerates the aging process of the feeding part, but also may cause its performance to decline or even be damaged, seriously affecting the stability and service life of the antenna. Therefore, in order to improve the adaptability and durability of wideband log-periodic antenna, the adjustability of installation angle and waterproof and dustproof measures should be fully considered in design to ensure that the antenna can operate continuously and efficiently in various extreme environments. SUMMARY

[0005] The utility model aims at providing a kind of wideband log-periodic antenna, solve the technical problems that the installation angle of previous antenna is poor in adjustability and structure is insufficient in durability, ensure that the antenna can operate continuously and efficiently in various extreme environments.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of wideband log-periodic antenna, comprising two main rods and a plurality of fixing frames for fixing the two main rods;

[0008] The bottom end of the two main rods is commonly provided with a fixing seat, and an angle adjusting structure is installed on the fixing seat, which is used to adjust the angle between the two main rods and the fixing seat;

[0009] The top ends of the two main rods are jointly provided with a power feeding structure, and a waterproof structure is arranged on the outer cover of the power feeding structure;

[0010] The bottom end of one of the main rods is provided with a radio frequency connector, one of the main rods is hollow, a cable is arranged in the main rod, one end of the cable is connected to the power feeding structure, and the other end of the cable is connected to the radio frequency connector;

[0011] A plurality of groups of vibrator pairs are sequentially and spacedly arranged on the outer sides of the two main rods along the length direction of the main rods, and the lengths of the plurality of groups of vibrator pairs gradually increase from the bottom end to the top end of the main rod.

[0012] Preferably, the fixing seat comprises two clamping seats and a connecting block arranged between the two clamping seats, and the two clamping seats are respectively sleeved on the outer edge surfaces of the two main rods.

[0013] The angle adjusting structure is arranged through the two clamping seats, the connecting block and the two main rods.

[0014] Preferably, the angle adjusting structure comprises an angle adjusting clamp.

[0015] The angle adjusting clamp is provided with a through hole and an arc-shaped slot, and the through hole is the center of the arc-shaped slot.

[0016] A rotating bolt arranged through the two clamping seats, the connecting block and the two main rods is arranged in the through hole.

[0017] A limiting bolt arranged through the two clamping seats, the connecting block and the two main rods is slidably arranged in the arc-shaped slot.

[0018] Preferably, a locking nut is threadedly and fittingly arranged at the end of the limiting bolt away from the angle adjusting clamp, and a return spring is sleeved on the outer edge surface of the limiting bolt and abuts against the locking nut and the clamping seat.

[0019] Preferably, U-shaped bolts are detachably arranged on the two sides of the angle adjusting clamp, and a limiting seat is movably arranged on each of the U-shaped bolts, and a limiting notch is arranged at the edge of the limiting seat.

[0020] Preferably, the waterproof structure comprises a waterproof base and a waterproof upper cover.

[0021] The waterproof base is provided with two mounting grooves, the two mounting grooves are matched with the peripheral shapes of the two main rods, the edges of the two mounting grooves extend outward to form mounting ring seats, and a plurality of first mounting holes are equally and spacedly arranged on the mounting ring seats.

[0022] The waterproof upper cover comprises an upper cover body, the bottom end edge of the upper cover body extends outward to form a shunt ring seat, and a plurality of second mounting holes are equally and spacedly arranged on the shunt ring seat.

[0023] The waterproof upper cover is snap-fitted to the waterproof base, and the shunt ring seat and the mounting ring seat are in close contact, and the first mounting hole and the second mounting hole are one-to-one corresponding and are provided with a fixing member.

[0024] Preferably, the center protrusion at the top end of the upper cover body is provided with a shunt protruding seat, the outer edge surface of the upper cover body is provided with a plurality of spiral flow guide ribs, one end of the plurality of spiral flow guide ribs is arranged on the outer edge surface of the shunt protruding seat, the other end of the plurality of spiral flow guide ribs is arranged on the outer edge surface of the shunt ring seat, and the plurality of spiral flow guide ribs are arranged in a ring-shaped spiral array.

[0025] Preferably, the power feeding structure includes a power feeding fixing seat;

[0026] The top end of each of the two main rods is provided with the power feeding fixing seat;

[0027] One of the power feeding fixing seats and the waterproof base is provided with a power feeding interface, and the power feeding interface is connected to one end of the cable;

[0028] The waterproof base is provided with a power feeding connecting piece, two power feeding connecting holes are formed in the power feeding connecting piece corresponding to the two power feeding fixing seats, one of the power feeding connecting holes is provided with the power feeding interface, and the other power feeding connecting hole and the corresponding power feeding fixing seat are provided with the connecting screw.

[0029] Preferably, the vibrator pair includes a primary vibrator pair and a secondary vibrator pair;

[0030] The primary vibrator pair is a low-frequency radiation unit for transmitting or receiving low-frequency signals;

[0031] The secondary vibrator pair is a high-level radiation unit for transmitting or receiving high-frequency signals.

[0032] One of the above technical solutions has the following beneficial effects:

[0033] 1. Flexibility of adjustment: The angle adjustment structure allows users to adjust the angle of the antenna as needed, thereby optimizing its directivity and gain and improving communication effectiveness.

[0034] 2. Waterproof performance: The waterproof structure outside the power feeding structure effectively prevents water from entering, ensuring that the antenna can still work normally in harsh weather conditions and prolonging the service life.

[0035] 3. Stable structure: The antenna has a stable and reliable overall structure, which can withstand certain wind force and other external forces, through the stable support of the fixing frame and the fixing seat and the cable inside the hollow main rod.

[0036] 4. Wideband performance: Through the layout of the element pair and the feed structure, the antenna can maintain stable gain and directivity in a wide frequency band, suitable for various communication application scenarios.

[0037] 5. Easy to install and maintain: The modular design of the antenna makes installation and maintenance more simple and convenient, and users can easily adjust the angle, replace damaged parts, etc. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a front view of a wideband log-periodic antenna of the utility model;

[0039] Figure 2 is a side view of a wideband log-periodic antenna of the utility model;

[0040] Figure 3 is Figure 2 the structure of A in the enlarged view of the utility model;

[0041] Figure 4 is a structure diagram of a waterproof upper cover in a wideband log-periodic antenna of the utility model;

[0042] Figure 5 is a partial structure diagram of a fixed base and two main rods in a cooperating state in a wideband log-periodic antenna of the utility model;

[0043] Figure 6 is a structure diagram of an angle adjusting structure in a wideband log-periodic antenna of the utility model.

[0044] In the drawings: main rod 1, fixed frame 2;

[0045] fixed seat 3, clamping seat 31, connecting block 32;

[0046] angle adjusting structure 4, angle adjusting clamp plate 41, rotating bolt 42, arc-shaped groove 43, limiting bolt 44, locking nut 45, return spring 46, U-shaped bolt 47, limiting seat 48, limiting notch 49;

[0047] feed structure 5, feed fixing seat 51, feed interface 52, feed connecting piece 53, connecting screw 54,

[0048] waterproof structure 6, fixing piece 60, waterproof base 61, mounting groove 611, mounting ring seat 612, first mounting hole 613, waterproof upper cover 62, upper cover main body 621, shunt ring seat 622, second mounting hole 623, shunt convex seat 624, spiral flow guide rib 625;

[0049] radio frequency connector 7, cable 8, element pair 9, first element pair 91, second element pair 92. DETAILED DESCRIPTION

[0050] The technical scheme of the utility model is further illustrated below in combination with the drawings and by specific embodiments.

[0051] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0052] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0053] In the description of the utility model, it needs to be explained that, unless otherwise specified and limited, the terms "mounting", "connecting" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0054] A broadband log-periodic antenna, comprising two main rods 1 and a plurality of fixing frames 2 for fixing the two main rods 1;

[0055] The bottom ends of the two main rods 1 are jointly provided with a fixing seat 3, the fixing seat 3 is provided with an angle adjusting structure 4, and the angle adjusting structure 4 is used for adjusting the angle between the two main rods 1 and the fixing seat 3;

[0056] The top ends of the two main rods 1 are jointly provided with a feeding structure 5, and the outer cover of the feeding structure 5 is provided with a waterproof structure 6;

[0057] The bottom end of one of the main rods 1 is provided with a radio frequency connector 7, one of the main rods 1 is hollow, a cable 8 is arranged in one of the main rods 1, one end of the cable 8 is connected to the feeding structure 6, and the other end of the cable 8 is connected to the radio frequency connector 7;

[0058] A plurality of groups of vibrator pairs 9 are sequentially and spacedly mounted on the outer sides of the two main rods 1 along their length direction, and the length of the plurality of groups of vibrator pairs 9 increases by each group from the bottom end to the top end of the main rod 1.

[0059] As shown in Figures 1-6 The working principle of the broadband log-periodic antenna is based on its unique structural design.

[0060] Firstly, the two main rods 1 serve as the main support structure of the antenna, maintaining a stable spacing and relative position through the fixing frame 2. The bottom end of the main rod 1 is fixed to an external pole through the fixing base 3, and the angle adjustment structure 4 allows users to adjust the angle between the two main rods 1 and the fixing base 3 as needed, thereby optimizing the directivity and gain of the antenna.

[0061] Secondly, at the top end of the antenna, the feeding structure 5 is responsible for effectively distributing radio frequency signals to each vibrator pair. Importantly, the outer cover of the feeding structure 5 is provided with a waterproof structure 6 to ensure that the antenna can still work normally in adverse weather conditions and prevent water from entering and causing performance degradation or damage.

[0062] Next, the radio frequency connector 7 is installed at the bottom end of one of the main rods 1 for connection with external radio frequency equipment. The other main rod 1 is designed in a hollow shape with a cable 8 installed inside. One end of the cable 8 is connected to the feeding structure 5, and the other end is connected to the radio frequency connector 7, thereby forming a complete signal transmission path.

[0063] Finally, a plurality of groups of vibrator pairs 9 are sequentially and spacedly mounted along the length direction of the two main rods 1. These vibrator pairs 9 are designed according to the principle of log-periodic antennas and can achieve good impedance matching and radiation characteristics within a wide frequency band. When the radio frequency signal is transmitted through the radio frequency connector 7 and the cable 8 to the feeding structure 5, the feeding structure 5 distributes the signal to each vibrator pair 9, and the vibrator pairs 9 radiate electromagnetic waves in a specific manner, thereby achieving wideband signal reception and transmission.

[0064] In summary, the beneficial effects of the broadband log-periodic antenna are as follows:

[0065] 1. Flexible adjustment: The angle adjustment structure 4 allows users to adjust the angle of the antenna as needed, thereby optimizing its directivity and gain and improving communication effectiveness.

[0066] 2. Waterproof performance: The waterproof structure 6 outside the feeding structure 5 effectively prevents water from entering, ensuring that the antenna can still work normally in adverse weather conditions and prolonging its service life.

[0067] 3. Structural stability: Through the stable support of the fixing frame 2 and the fixing base 3, as well as the cable 8 installed inside the hollow main rod 1, the overall structure of the antenna is stable and reliable, capable of withstanding certain wind and other external forces.

[0068] 4. Wideband performance: Through the arrangement of the dipole pair and the feeding structure, this antenna can maintain stable gain and directivity over a wide frequency band, making it suitable for a variety of communication applications.

[0069] 5. Easy to install and maintain: The modular design of the antenna makes installation and maintenance simpler and more convenient. Users can easily perform operations such as angle adjustment and replacement of damaged parts.

[0070] To further explain, the fixing base 3 includes two card holders 31 and a connecting block 32 disposed between the two card holders 31, with the two card holders 31 respectively sleeved on the outer edge surface of the two main rods 1;

[0071] The angle adjustment structure 4 is inserted through the two card seats 31, the connecting block 32 and the two main rods 1.

[0072] like Figure 5 As shown, the angle adjustment structure 4 is inserted through the fixed base and the main rod, and the angle adjustment structure 4 is not easy to detach under the impact of external force.

[0073] To further explain, the angle adjustment structure 4 includes an angle adjustment clamp 41;

[0074] The angle adjustment plate 41 has a through hole and an arc-shaped groove 43, and the through hole is the center of the arc-shaped groove 43;

[0075] Rotating bolts 42 are installed in the through hole, which pass through the two card holders 31, the connecting block 32 and the two main rods 1;

[0076] The arc-shaped groove 43 is slidably provided with limiting bolts 44 that pass through the two card seats 31, the connecting block 32 and the two main rods 1.

[0077] To further explain, a locking nut 45 is threadedly installed at one end of the limiting bolt 44 away from the angle adjusting plate 41, and a return spring 46 is sleeved on the outer edge of the limiting bolt 44, which abuts against the locking nut 45 and the card seat 31.

[0078] Specifically, such as Figures 5-6 As shown, the main rod 1 of the antenna is stably supported by the fixing base 3, which consists of two card holders 31 and a connecting block 32. The two card holders 31 are respectively fitted on the outer edge surface of the two main rods 1, and the connecting block 32 is located between the two card holders 31, serving the purpose of connection and reinforcement.

[0079] The angle adjusting structure 4 is the core of the entire antenna tilt adjustment. It mainly includes an angle adjusting clamp plate 41, a rotating bolt 42, and a limiting bolt 44. One side of the top end of the angle adjusting clamp plate 41 is provided with a through hole, the rotating bolt 42 passes through the through hole, and simultaneously passes through the two clamping seats 31, the connecting block 32, and the two main rods 1, thereby connecting these components together and allowing them to rotate relative to each other. The bottom end of one side of the angle adjusting clamp plate 41 is provided with an arc-shaped slot 43, and the limiting bolt 44 slides in the arc-shaped slot 43. The limiting bolt 44 also passes through the two clamping seats 31, the connecting block 32, and the two main rods 1, but its position in the arc-shaped slot 43 can be adjusted, thereby changing the angle of the main rod 1 relative to the fixed seat 3, i.e., the tilt angle of the antenna.

[0080] When adjusting the tilt angle, first, the locking nut 45 on the limiting bolt 44 is loosened, and then the main rod 1 can be swung to rotate around the rotating bolt 42 as the axis. During this process, the limiting bolt 44 moves in the arc-shaped slot 43 to adapt to the change in the tilt angle. After adjusting to the desired tilt angle, the locking nut 45 is tightened again, which compresses the return spring 46 to make it deform and abut against the clamping seat 31, thereby fixing the adjusted tilt angle. After the adjustment is completed, the cooperation between the locking nut 45 and the return spring 46 can ensure the stability of the limiting bolt 44 in the arc-shaped slot 43, preventing the tilt angle from changing accidentally during use, thereby ensuring the stability of the antenna in operation and the quality of communication.

[0081] Further, both sides of the angle adjusting clamp plate 41 are detachably mounted with U-shaped bolts 47, and a limiting seat 48 is movably mounted on each of the two U-shaped bolts 47. The edge of the limiting seat 48 is provided with a limiting notch 49.

[0082] Specifically, as shown in Figures 5-6 the U-shaped bolt 47 can firmly fix the antenna on the external electric pole through its special shape and mounting method, ensuring that the antenna will not loosen or fall off during the adjustment of the tilt angle. At the same time, the design of the U-shaped bolt 47 also allows it to be disassembled when necessary, thereby facilitating the maintenance or replacement of parts of the antenna.

[0083] Further, the limiting seat 48 is movably mounted on the U-shaped bolt 47, and the limiting notch 49 formed on the edge of the limiting seat 48 is used to cooperate with the external electric pole to limit the movement of the antenna in a specific direction. This design not only increases the stability of the antenna, but also provides additional support and guidance during the adjustment of the tilt angle, making the adjustment process smoother and more accurate.

[0084] Further, the waterproof structure 6 includes a waterproof base 61 and a waterproof upper cover 62.

[0085] The waterproof base 61 is provided with two mounting grooves 611, which are matched with the peripheral shape of the two main rods 1, and the edges of the two mounting grooves 611 extend outward to form mounting ring seats 612, and a plurality of first mounting holes 613 are arranged on the mounting ring seats 612 at equal intervals.

[0086] The waterproof upper cover 62 comprises an upper cover body 621, and the bottom end edge of the upper cover body 621 extends outward to form a shunt ring seat 622, and a plurality of second mounting holes 623 are arranged on the shunt ring seat 622 at equal intervals.

[0087] The waterproof upper cover 62 is snap-fitted to the waterproof base 61, and the shunt ring seat 622 and the mounting ring seat 612 are attached, and the first mounting holes 613 and the second mounting holes 623 are correspondingly arranged and are provided with a fixing member 60.

[0088] Specifically, as shown in Figures 3-4 The waterproof base 61 is provided with two mounting grooves 611, which are matched with the peripheral shape of the two main rods 1, and the edges of the two mounting grooves 611 extend outward to form mounting ring seats 612, and a plurality of first mounting holes 613 are arranged on the mounting ring seats 612 at equal intervals.

[0089] Therefore, through the close snap-fitting structure and the equal-interval mounting hole design, the waterproof structure 6 can effectively prevent water from penetrating from the outside, and protect the electronic components inside the antenna from being affected by moisture and corrosion.

[0090] Further, the center of the top end of the upper cover body 621 is provided with a shunt convex seat 624, the outer edge surface of the upper cover body 601 is provided with a plurality of spiral flow guide ribs 625, one end of the plurality of spiral flow guide ribs 625 is arranged on the outer edge surface of the shunt convex seat 624, the other end of the plurality of spiral flow guide ribs 625 is arranged on the outer edge surface of the shunt ring seat 622, and the plurality of spiral flow guide ribs 625 are arranged in a ring-shaped spiral array.

[0091] Specifically, as shown in Figures 3-4As shown, the protection of the assembly arranged on the two main rods 1 is completed by the upper cover body 621 with the shunt ring seat 622 and the shunt convex seat 624. When the rain falls on the surface of the waterproof upper cover 6, the rain is shunted by the spiral flow guide ribs 625 cooperating with the shunt convex seat 624, so that the rain flows between the spiral flow guide ribs 625 and the rain is thrown out in all directions under the influence of centrifugal force, thereby avoiding the slow flow of rain into the antenna and greatly improving the waterproof effect of the antenna.

[0092] Further, the feeding structure 5 includes a feeding fixed seat 51;

[0093] The top end of each of the two main rods 1 is provided with the feeding fixed seat 51;

[0094] One of the feeding fixed seats 51 and the waterproof base 61 is provided with a feeding interface 52, and the feeding interface 52 is connected with one end of the cable 8;

[0095] The waterproof base 61 is provided with a feeding connecting piece 53, and two feeding connecting holes are formed in the feeding connecting piece 53 corresponding to the two feeding fixed seats 51. One of the feeding connecting holes is provided with the feeding interface 52, and the other feeding connecting hole is provided with the connecting screw 54 corresponding to the feeding fixed seat 51.

[0096] Specifically, as shown in the figure, Figure 3 One end of the cable 8 is connected with the feeding interface 52, and the electric energy in the cable 8 enters the feeding structure 5 through the feeding interface 52. The feeding interface 52 is arranged in one of the feeding fixed seats 51 and the waterproof base 61, so as to ensure that the electric energy can be smoothly transmitted to the main rod 1 of the antenna.

[0097] The feeding connecting piece 53 is arranged on the waterproof base 61 and provided with two feeding connecting holes corresponding to the two feeding fixed seats 51. One of the feeding connecting holes is provided with the feeding interface 52 for transmitting electric energy, and the other feeding connecting hole is matched with the connecting screw 54 arranged in the corresponding feeding fixed seat 51, so as to firmly connect the feeding connecting piece 53 and the feeding fixed seat 51 together to form a complete feeding path.

[0098] Finally, the electric energy is distributed to the two main rods 1 through the cooperation of the feeding connecting piece 53 and the feeding fixed seat 51. Due to the design of the feeding connecting piece 53 and the feeding fixed seat 51, the electric energy can be uniformly and stably transmitted to the main rod 1, so as to excite the antenna to generate the required radiation field.

[0099] Further, the oscillator pair 9 includes a first-order oscillator pair 91 and a second-order oscillator pair 92;

[0100] The primary vibrator pair 91 is a low frequency radiation unit for transmitting or receiving low frequency signals.

[0101] The secondary vibrator pair 92 is a high frequency radiation unit for transmitting or receiving high frequency signals.

[0102] It should be noted that the number of vibrator pairs 9 is determined by the gain of the antenna, the higher the gain, the more the number of vibrator pairs 9. First, the length of the longest unit of the primary vibrator pair 91 and the secondary vibrator pair 92 is calculated by the lowest frequency of the low frequency radiation unit and the high frequency radiation unit, and then the length of the other vibrator pairs and the spacing between the vibrator pairs are calculated according to the principle of logarithmic period distribution.

[0103] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanation here, those skilled in the art can think of other specific embodiments of the present application without having to exert creative labor, and these equivalent variations or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A wideband log-periodic antenna, characterized by, The utility model provides a kind of antenna, including two main poles (1) and several fixing frames (2) for fixing two main poles (1); The bottom end of two main poles (1) is equipped with a fixing seat (3) in common, and an angle adjusting structure (4) is installed on the fixing seat (3), which is used to adjust the angle between the two main poles (1) and the fixing seat (3); The top end of two main poles (1) is equipped with a power feeding structure (5) in common, and a waterproof structure (6) is installed on the outer cover of the power feeding structure (5); The bottom end of one of the main poles (1) is equipped with a radio frequency connector (7), one of the main poles (1) is hollow, and a cable (8) is installed in one of the main poles (1), one end of the cable (8) is connected to the power feeding structure (6), and the other end of the cable (8) is connected to the radio frequency connector (7); Multiple groups of vibrator pairs (9) are sequentially and spacedly installed on the outer side of the two main poles (1) along the length direction, and the length of multiple groups of vibrator pairs (9) increases gradually from the bottom end to the top end of the main pole (1).

2. A wideband log-periodic antenna according to claim 1, wherein, The fixing seat (3) includes two clamping seats (31) and a connecting block (32) arranged between the two clamping seats (31), and the two clamping seats (31) are respectively sleeved on the outer edge surfaces of the two main poles (1); The angle adjusting structure (4) is arranged through the two clamping seats (31), the connecting block (32) and the two main poles (1).

3. A wideband log-periodic antenna according to claim 2, wherein, The angle adjusting structure (4) includes an angle adjusting clamp (41). The angle adjusting clamp (41) is provided with a through hole and an arc-shaped groove (43), and the through hole is the center of the arc-shaped groove (43); The through hole is equipped with a rotating bolt (42) arranged through the two clamping seats (31), the connecting block (32) and the two main poles (1); The arc-shaped groove (43) is slidably provided with a limiting bolt (44) arranged through the two clamping seats (31), the connecting block (32) and the two main poles (1).

4. A wideband log-periodic antenna according to claim 3, wherein The end of the limiting bolt (44) away from the angle adjusting clamp (41) is threadedly connected with a locking nut (45), and the outer edge surface of the limiting bolt (44) is sleeved with a return spring (46) abutting against the locking nut (45) and the clamping seat (31).

5. A wideband log-periodic antenna according to claim 4, wherein, The two sides of the angle adjusting clamp (41) are detachably provided with U-shaped bolts (47), and the two U-shaped bolts (47) are movably provided with limiting seats (48), and the edges of the limiting seats (48) are provided with limiting notches (49).

6. A wideband log-periodic antenna according to claim 1, wherein, The waterproof structure (6) includes a waterproof base (61) and a waterproof upper cover (62); The waterproof base (61) is provided with two mounting grooves (611), and the two mounting grooves (611) are matched with the peripheral shapes of the two main poles (1), and the edges of the two mounting grooves (611) extend outward to form mounting ring seats (612), and the mounting ring seats (612) are equally and spacedly provided with multiple first mounting holes (613). The waterproof upper cover (62) includes an upper cover body (621), and a bottom end edge of the upper cover body (621) extends outward to form a shunt ring seat (622) configured with a plurality of second mounting holes (623) arranged at equal intervals on the shunt ring seat (622); The waterproof upper cover (62) is detachably mounted on the waterproof base (61), and the shunt ring seat (622) and the mounting ring seat (612) are attached to each other, and the first mounting hole (613) and the second mounting hole (623) are one-to-one corresponding and mounted with a fixing member (60).

7. A wideband log-periodic antenna according to claim 6, wherein, A shunt convex seat (624) is arranged at the center of the top end of the upper cover body (621), a plurality of spiral flow guide ribs (625) are arranged on the outer edge surface of the upper cover body (601), one end of each of the spiral flow guide ribs (625) is arranged on the outer edge surface of the shunt convex seat (624), the other end of each of the spiral flow guide ribs (625) is arranged on the outer edge surface of the shunt ring seat (622), and the spiral flow guide ribs (625) are arranged in a ring-shaped spiral array.

8. A wideband log-periodic antenna according to claim 1, wherein, The power supply structure (5) includes a power supply fixing seat (51); The power supply fixing seat (51) is arranged at the top end of each of the two main rods (1); One of the power supply fixing seats (51) and the waterproof base (61) is detachably mounted with a power supply interface (52), and the power supply interface (52) is connected with one end of the cable (8); The waterproof base (61) is mounted with a power supply connecting piece (53), two power supply connecting holes are arranged on the power supply connecting piece (53) corresponding to the two power supply fixing seats (51), one of the power supply connecting holes is detachably mounted with the power supply interface (52), and the other power supply connecting hole and the corresponding power supply fixing seat (51) are detachably mounted with the connecting screw (54).

9. A wideband log-periodic antenna according to claim 1, wherein, The vibrator pair (9) includes a primary vibrator pair (91) and a secondary vibrator pair (92); The primary vibrator pair (91) is a low-frequency radiation unit for transmitting or receiving low-frequency signals; The secondary vibrator pair (92) is a high-level radiation unit for transmitting or receiving high-frequency signals.

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