Narrow-band antenna oscillator based on sheet metal punch forming

Abstract

The utility model relates to the technical field of antennas, and provides a narrow-band antenna oscillator based on sheet metal punch forming, which comprises an oscillator main body comprising an octagonal hollow structure formed by plane sheet metal punch forming, and the octagonal structure comprises an octagonal peripheral frame and four oscillator arms arranged in the octagonal peripheral frame. Each oscillator arm comprises a first oscillator section, a second oscillator section, a bending part and a third oscillator section which are connected in sequence; wherein the first oscillator section is in a long strip shape, the second oscillator section is a semicircular arc with an opening facing the first oscillator section, and the third oscillator section is bent downwards through the bending part to form a feed pin; the feed pin corresponding to each oscillator arm is connected with the PCB through welding; the vibrator can be formed through plane type sheet metal stamping and then bending, machining is easy, assembling is easy, and the cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and in particular to a narrowband antenna vibrator based on sheet metal stamping. Background Technology

[0002] In the field of mobile communication network technology, base station antennas are key equipment for network coverage. Antennas mainly include core components such as radiating elements, phase shifters, transmission mechanisms, and control systems. Currently, the frequency bands for civilian communication are mainly concentrated below sub-6GHz. Various operators have some narrowband application scenarios, such as China Mobile's FDD 1710-1830MHz band and TDD 2515-2675MHz band. Although wideband vibrators can cover these frequency bands, the performance of each narrowband cannot be optimized after being compatible with multiple frequency bands, and it will lead to the problem of complex vibrator structure and high cost. In addition, existing metal vibrators have complex structures, high die-casting costs, large overall weight, and complex fixing and assembly methods, which increase material costs. To address this issue, it is necessary to customize narrowband vibrators to maximize performance while keeping costs low, avoiding the significant increase in costs from die-casting. Utility Model Content

[0003] This utility model provides a narrowband antenna vibrator based on sheet metal stamping. It can be made into a planar shape by sheet metal stamping and then simply bent. No additional assembly fasteners, feed lines, or other materials are required. The four-point feeding welding method is simple, easy to process, and easy to assemble, which can effectively reduce costs.

[0004] To achieve the above objectives, this utility model provides a narrowband antenna vibrator based on sheet metal stamping, comprising: a vibrator body, including an octagonal hollow structure formed by planar sheet metal stamping, the octagonal structure including an octagonal outer frame and four vibrator arms disposed inside the octagonal outer frame, each vibrator arm including a first vibrator segment, a second vibrator segment, a bent portion and a third vibrator segment connected in sequence; wherein, the first vibrator segment is elongated, the second vibrator segment is a semi-circular arc with an opening facing the first vibrator segment, and the third vibrator segment is bent downward through the bent portion to form a feed foot; and a PCB board, wherein the feed foot corresponding to each vibrator arm is connected to the PCB board by welding.

[0005] In some embodiments, the first oscillator segment is perpendicular to the inner edge of the octagonal outer frame, one end of the second oscillator segment is connected to the first connection point on the first oscillator segment, and the other end is bent toward the inner edge of the octagonal outer frame to form the semicircular arc.

[0006] In some embodiments, the third oscillator segment is connected to a second connection point on the first oscillator segment via the curved portion. The first connection point is located in the middle of the first oscillator segment, and the second connection point is located at one end of the first oscillator segment away from the inner edge of the octagonal outer frame. The first connection point and the second connection point are located on the same side of the first oscillator segment.

[0007] In some embodiments, the oscillator body is formed by the following process: the octagonal hollow structure and four oscillator arms are integrally formed by a planar sheet metal stamping process; the third oscillator segment of the four oscillator arms is bent to form a downwardly inclined power supply foot; wherein, the semi-circular arc length and radius of the second oscillator segment are adjusted according to the target frequency band requirements, with the semi-circular arc length ranging from 5mm to 15mm and the radius ranging from 2mm to 8mm, so as to achieve adjustment of the oscillator resonant frequency and impedance matching.

[0008] In some embodiments, the side-to-side spacing of the octagonal outer frame is 15mm to 50mm, and the area of ​​the hollowed-out region is 40% to 60% of the total area of ​​the oscillator body.

[0009] In some embodiments, the power supply pins are welded to the PCB board by spot welding or laser welding, and the power supply pins of each vibrator arm are symmetrically distributed on the PCB board.

[0010] In some embodiments, the vibrating arms are evenly distributed along the four axes of symmetry of the octagonal outer frame, and the included angle between adjacent vibrating arms is 90°.

[0011] In some embodiments, the PCB board is provided with a pad array corresponding to the power supply pin, the pad surface is silver-plated to improve conductivity, and the pad edge is provided with an anti-overflow groove.

[0012] In some embodiments, an insulating positioning post is provided between the oscillator body and the PCB board, and the positioning post is fixedly connected to the PCB board by a snap-fit ​​structure.

[0013] In some embodiments, the outer side of the octagonal outer frame of the vibrator body is provided with mounting holes, the number of which is four and the diameter of which is 3mm to 5mm, for fixing to the antenna bracket by bolts.

[0014] This utility model embodiment provides a narrow-band antenna vibrator based on sheet metal stamping, which has at least the following beneficial effects: the narrow-band antenna vibrator based on sheet metal stamping adopts an octagonal hollow structure formed by planar sheet metal stamping, and four vibrator arms are provided inside the octagonal outer frame. Each vibrator arm is composed of a first vibrator segment, a second vibrator segment, a bent part and a third vibrator segment connected in sequence. The first segment is elongated, the second segment is a semicircular arc with its opening facing the first segment, and the third segment is formed by bending downwards through a curved section to create a feed foot. The feed foot corresponding to each segment arm is soldered to the PCB board. It is understood that the narrowband antenna segment in this application can be formed using sheet metal stamping, eliminating the need for complex molds and costly die-casting. The first, second, curved, and third segments can be made into a planar shape first, then formed by sheet metal stamping, and finally the curved section can be simply bent to complete the shape. No additional assembly fasteners, feed lines, or other materials are required. Furthermore, the four-point feed welding method is simple, easy to process, and easy to assemble, effectively reducing costs. In addition, the second segment is a semicircular arc with its opening facing the first segment. By adjusting the length and curvature of the semicircular arc, the resonant frequency and bandwidth of the segment can be changed to better match a specific narrowband, improving the antenna's radiation efficiency and gain within the target frequency band, achieving performance optimization, and enhancing the versatility and flexibility of the segment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a narrowband antenna vibrator based on sheet metal stamping provided in one embodiment;

[0016] Figure 2 This is a top view of a narrowband antenna vibrator based on sheet metal stamping provided in one embodiment;

[0017] Figure 3 This is a top view of the main body of a narrowband antenna vibrator based on sheet metal stamping, provided in one embodiment;

[0018] Figure 4 This is a side view of the main body of a narrow-band antenna vibrator based on sheet metal stamping, provided in one embodiment.

[0019] Reference numerals: 100, main body of the oscillator; 110, octagonal outer frame; 120, first oscillator segment; 130, second oscillator segment; 140, bending part; 200, third oscillator segment; 300, PCB board. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] In some embodiments, the terms first, second, etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] Furthermore, unless otherwise explicitly specified and limited, the term "connection / linkage" should be interpreted broadly, for example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a link or an indirect connection through an intermediate medium.

[0023] In the description of the embodiments in this application, the references to terms such as "one embodiment / implementation," "another embodiment / implementation," "some embodiments / implementations," and "in the above embodiments / implementations," etc., refer to specific features, structures, materials, or characteristics described in conjunction with embodiments or examples that are included in at least two embodiments or implementations disclosed in this application. In this application disclosure, the illustrative expressions of the above terms do not necessarily refer to the same embodiments or implementations.

[0024] In the field of mobile communication network technology, base station antennas are key equipment for network coverage. Antennas mainly include core components such as radiating elements, phase shifters, transmission mechanisms, and control systems. Currently, the frequency bands for civilian communication are mainly concentrated below sub-6GHz. Various operators have some narrowband application scenarios, such as China Mobile's FDD 1710-1830MHz band and TDD 2515-2675MHz band. Although wideband vibrators can cover these frequency bands, the performance of each narrowband cannot be optimized after being compatible with multiple frequency bands, and it will lead to the problem of complex vibrator structure and high cost. In addition, existing metal vibrators have complex structures, high die-casting costs, large overall weight, and complex fixing and assembly methods, which increase material costs. To address this issue, it is necessary to customize narrowband vibrators to maximize performance while keeping costs low, avoiding the significant increase in costs from die-casting.

[0025] Based on this, the present invention provides a narrowband antenna vibrator based on sheet metal stamping. It can be made into a planar shape by sheet metal stamping and then simply bent. It does not require additional assembly of fasteners, feed lines and other materials. The four-point feeding welding method is simple, easy to process and assemble, which can effectively reduce costs.

[0026] refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of a narrowband antenna vibrator based on sheet metal stamping provided in one embodiment; Figure 2 This is a top view of a narrowband antenna vibrator based on sheet metal stamping provided in one embodiment; Figure 3This is a top view of the main body of a narrowband antenna vibrator based on sheet metal stamping, provided in one embodiment; Figure 4 This is a side view of the main body of a narrow-band antenna vibrator based on sheet metal stamping, provided in one embodiment.

[0027] To achieve the above objectives, this utility model provides a narrowband antenna vibrator based on sheet metal stamping, comprising: a vibrator body 100, including an octagonal hollow structure formed by planar sheet metal stamping, the octagonal structure including an octagonal outer frame 110, and four vibrator arms disposed inside the octagonal outer frame 110, each vibrator arm including a first vibrator segment 120, a second vibrator segment 130, a bending portion 140, and a third vibrator segment 200 connected in sequence; wherein, the first vibrator segment 120 is elongated, the second vibrator segment 130 is a semi-circular arc with an opening facing the first vibrator segment 120, and the third vibrator segment 200 is bent downward through the bending portion 140 to form a feed foot; and a PCB board 300, the feed foot corresponding to each vibrator arm being connected to the PCB board 300 by welding.

[0028] The narrowband antenna vibrator based on sheet metal stamping adopts an octagonal hollow structure formed by planar sheet metal stamping. The octagonal outer frame 110 contains four vibrator arms. Each vibrator arm consists of a first vibrator segment 120, a second vibrator segment 130, a bending portion 140, and a third vibrator segment 200 connected sequentially. The first vibrator segment 120 is elongated, the second vibrator segment 130 is a semi-circular arc with its opening facing the first vibrator segment 120, and the third vibrator segment 200 is bent downwards through the bending portion 140 to form a feed foot. The feed foot corresponding to each vibrator arm is soldered to the PCB board 300. It is understood that the narrowband antenna vibrator in this application can be formed using sheet metal stamping, eliminating the need for complex molds and high-cost die-casting processes. The first vibrator segment 120, the second vibrator segment 130, the bending portion 140, and the third vibrator segment 200 can be initially formed in a planar shape, followed by sheet metal stamping. The process involves shaping the antenna by simply bending the curved section 140, without requiring additional fasteners, feed lines, or other materials. The four-point power supply welding method is simple, easy to process, and easy to assemble, effectively reducing costs. Furthermore, the second oscillator segment 130 is a semi-circular arc with its opening facing the first oscillator segment 120. By adjusting the length and curvature of the semi-circular arc, the resonant frequency and bandwidth of the oscillator can be changed to better match specific narrow frequency bands, improve the antenna's radiation efficiency and gain in the target frequency band, and achieve performance optimization, thereby enhancing the oscillator's versatility and flexibility.

[0029] In some embodiments, the octagonal outer frame 110 serves as the supporting structure for the entire vibrator body 100, providing fixation and positioning for the four internal vibrator arms, ensuring the overall shape and stability of the vibrator. At the same time, the octagonal structural design helps to optimize the radiation performance of the vibrator and improve the directivity and gain of the antenna. Each vibrator arm is composed of a first vibrator segment 120, a second vibrator segment 130, a bend 140, and a third vibrator segment 200 connected in sequence. It is the main radiating part of the vibrator, responsible for receiving and transmitting electromagnetic waves in a specific frequency band. By adjusting parameters such as the length, shape, and spacing of the vibrator arms, optimization for different narrow frequency bands can be achieved, improving the performance of the antenna in the target frequency band.

[0030] The first oscillator segment 120, as the starting part of the oscillator arm, has a long strip design that helps increase the effective length of the oscillator, thereby affecting the resonant frequency and bandwidth of the oscillator. The second oscillator segment 130, with its semi-circular arc shape opening towards the first oscillator segment 120, can form a specific coupling effect with the first oscillator segment 120, further optimizing the radiation characteristics of the oscillator and enabling the oscillator to have better matching and radiation efficiency in a specific frequency band. The bending part 140 connects the second oscillator segment 130 and the third oscillator segment 200, serving as a transition and changing direction. At the same time, the bending of the bending part 140 can adjust the angle and position of the third oscillator segment 200, thereby achieving precise positioning and shaping of the feed pin. The third oscillator segment 200 is bent downward through the bending part 140 to form the feed pin, which is soldered to the PCB board 300. It is responsible for transmitting the signal received by the oscillator to the PCB board 300, and also transmitting the signal on the PCB board 300 to the oscillator during the transmission process, realizing signal transmission and conversion.

[0031] In some embodiments, the PCB board 300 serves as a supporting component for the vibrator, providing a platform for electrical connection and signal transmission. The feed pins corresponding to each vibrator arm are connected to the PCB board 300 by soldering to ensure stable signal transmission. At the same time, other electronic components and circuits, such as matching networks and filters, can be integrated on the PCB board 300 to further optimize the antenna performance. In addition, the PCB board 300 can also provide physical support for the vibrator, enabling the vibrator to be stably installed in the antenna system, while also helping to improve the stability and reliability of the entire antenna structure.

[0032] Understandably, the design of PCB 300 can be customized according to different application requirements, achieving good integration and compatibility with other antenna components and equipment, facilitating installation and use in various base station antenna systems, and improving the overall performance and flexibility of the antenna system.

[0033] In some embodiments, the first oscillator segment 120 is perpendicular to the inner edge of the octagonal outer frame 110, and one end of the second oscillator segment 130 is connected to the first connection point on the first oscillator segment 120, while the other end is bent toward the inner edge of the octagonal outer frame 110 to form a semi-circular arc.

[0034] Understandably, the first oscillator segment 120 is perpendicular to the inner edge of the octagonal outer frame 110. This perpendicular design helps optimize the radiation directivity and gain of the oscillator. The first oscillator segment 120 has two connection points, which are used to connect the second oscillator segment 130 and the third oscillator segment 200, respectively. The second oscillator segment 130 has a semi-circular arc shape with its opening facing the first oscillator segment 120, which can form a specific coupling effect with the first oscillator segment 120, further optimizing the radiation characteristics of the oscillator and enabling the oscillator to have better matching and radiation efficiency in a specific frequency band. One end of the second oscillator segment 130 is connected to the first connection point on the first oscillator segment 120, and the other end is bent towards the inner edge of the octagonal outer frame 110 to form a semi-circular arc. In addition, the length and radius of the semi-circular arc of the second oscillator segment 130 can be adjusted according to the target frequency band requirements. The semi-circular arc length ranges from 5mm to 15mm, and the radius ranges from 2mm to 8mm, so as to achieve adjustment of the oscillator resonant frequency and impedance matching.

[0035] In some embodiments, the third oscillator segment 200 is connected to a second connection point on the first oscillator segment 120 via a bend 140. The first connection point is located in the middle of the first oscillator segment 120, and the second connection point is located at one end of the first oscillator segment 120 away from the inner edge of the octagonal outer frame 110. The first connection point and the second connection point are located on the same side of the first oscillator segment 120.

[0036] It is understood that the bending portion 140 is connected to the second connection point on the first oscillator segment 120. The second connection point is located at one end of the first oscillator segment 120 away from the inner edge of the octagonal outer frame 110, and the first connection point and the second connection point are located on the same side of the first oscillator segment 120. By bending the bending portion 140, the angle and position of the third oscillator segment 200 can be adjusted. The third oscillator segment 200 is bent downward by the bending portion 140 to form a power supply pin. The power supply pin is soldered to the PCB board 300, thereby achieving precise positioning of the power supply pin.

[0037] In some embodiments, the oscillator body 100 is formed by the following process: an octagonal hollow structure and four oscillator arms are integrally formed by a planar sheet metal stamping process; the third oscillator segment 200 of the four oscillator arms is bent so that the bent part 140 forms a downwardly inclined power supply foot; wherein, the semi-circular arc length and radius of the second oscillator segment 130 are adjusted according to the target frequency band requirements, with the semi-circular arc length ranging from 5mm to 15mm and the radius ranging from 2mm to 8mm, so as to achieve adjustment of the oscillator resonant frequency and impedance matching.

[0038] Understandably, the planar sheet metal stamping process involves integrally forming an octagonal hollow structure and four vibrating arms using planar sheet metal stamping technology. Since it eliminates the need for complex molds and high-cost die-casting processes, mold costs can be significantly reduced. This makes it suitable for small-batch production or situations with rapid product updates, effectively controlling production costs. In addition, sheet metal stamping is fast and efficient, enabling rapid response to market demands, shortening product launch time, and improving material utilization, reducing waste, and lowering material costs.

[0039] It is worth noting that by bending the third segment 200 of the four oscillator arms, the bent part 140 forms a downward-sloping feed foot. The bending operation is simple and easy to perform, requiring no additional assembly or fasteners, further reducing production costs and assembly complexity. The semi-circular arc length and radius of the second oscillator segment 130 are adjusted according to the target frequency band requirements, with the semi-circular arc length ranging from 5mm to 15mm and the radius ranging from 2mm to 8mm. By adjusting these parameters, fine adjustment of the oscillator resonant frequency and impedance matching can be achieved, enabling the oscillator to have better performance in a specific narrow frequency band. Therefore, the versatility and flexibility of the oscillator can be improved, meeting the needs of various narrow frequency application scenarios.

[0040] In some embodiments, the octagonal outer frame 110 has a side-to-side spacing of 15mm to 50mm, and the area of ​​the hollowed-out region is 40% to 60% of the total area of ​​the oscillator body 100. It is understood that a side-to-side spacing of 15mm to 50mm can ensure that the oscillator has sufficient mechanical strength while maintaining a small volume and weight. The hollowed-out region accounts for 40% to 60% of the total area of ​​the oscillator body 100, which not only ensures the lightweight design of the oscillator, but also ensures sufficient structural strength and rigidity, as well as reduces the amount of material used and lowers production costs.

[0041] In some embodiments, the feeding pins are welded to the PCB board 300 by spot welding or laser welding, and the feeding pins of each vibrator arm are symmetrically distributed on the PCB board 300. It is understood that spot welding or laser welding can ensure reliable electrical and mechanical connection between the feeding pins and the PCB board 300. The symmetrical distribution of the feeding pins on the PCB board 300 helps to balance the electrical performance of the vibrator, reduce interference and loss in signal transmission, and improve the radiation efficiency and gain of the antenna.

[0042] In some embodiments, the vibrating arms are uniformly distributed along the four axes of symmetry of the octagonal outer frame 110, and the included angle between adjacent vibrating arms is 90°. It can be understood that the uniform distribution of the vibrating arms along the axes of symmetry can make the radiation performance of the vibrator more balanced in all directions, improve the directivity and coverage of the antenna, and the included angle between adjacent vibrating arms is 90°. This orthogonal distribution helps to reduce mutual interference between vibrating arms, optimize the radiation mode of the antenna, and improve the stability and reliability of the signal.

[0043] In some embodiments, the PCB board 300 is provided with an array of pads corresponding to the power supply pins. The pads are silver-plated to improve conductivity, and anti-overflow grooves are provided at the edges of the pads. It is understood that the design of the pad array corresponding to the power supply pins ensures precise alignment and soldering between the power supply pins and the PCB board 300. The silver plating on the pads can significantly improve conductivity, reduce resistance and loss in signal transmission, and enhance the oxidation and corrosion resistance of the pads, thus extending the product's service life. The anti-overflow grooves at the edges of the pads can prevent solder or glue from overflowing during the soldering process, avoiding short circuits and other electrical faults, and improving the reliability and safety of the product.

[0044] In some embodiments, an insulating positioning post is provided between the oscillator body 100 and the PCB board 300, and the positioning post is fixedly connected to the PCB board 300 through a snap-fit ​​structure. It is understood that the insulating positioning post can prevent electrical short circuits between the oscillator body 100 and the PCB board 300, ensuring the safety and reliability of the product. In addition, the fixed connection between the oscillator body 100 and the PCB board 300 through the snap-fit ​​structure can achieve precise alignment and fixation between the oscillator body 100 and the PCB board 300, improving assembly efficiency and product quality. Furthermore, the design of the snap-fit ​​structure eliminates the need for additional bolts or glue during the assembly process, simplifying the assembly process and reducing production costs and assembly difficulty.

[0045] In some embodiments, the outer side of the octagonal outer frame 110 of the vibrator body 100 is provided with mounting holes, the number of which is four and the diameter of which is 3mm to 5mm, for fixing to the antenna bracket by bolts; it is understood that fixing to the antenna bracket by bolts is a simple and quick installation process, which is convenient for on-site installation and maintenance.

[0046] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art may make various modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A narrowband antenna element based on sheet metal stamping, characterized by, The application relates to a resonator body, which comprises an octagonal hollow structure formed by plane sheet metal stamping, the octagonal structure comprising an octagonal peripheral frame and four resonator arms arranged inside the octagonal peripheral frame, each of the resonator arms comprising a first resonator section, a second resonator section, a bending part and a third resonator section connected in sequence; wherein the first resonator section is long-strip-shaped, the second resonator section is semicircular arc-shaped with an opening facing the first resonator section, and the third resonator section is bent downward through the bending part to form a feeding pin. A PCB board is provided, and the feeding pin of each resonator arm is connected to the PCB board through welding. The first resonator section is perpendicular to the inner side edge of the octagonal peripheral frame, one end of the second resonator section is connected to a first connecting point on the first resonator section, and the other end is bent toward the inner side edge of the octagonal peripheral frame to form the semicircular arc.

2. The sheet metal stamping formed narrowband antenna element of claim 1, wherein, The third resonator section is connected to a second connecting point on the first resonator section through the bending part, the first connecting point is located at the middle of the first resonator section, the second connecting point is located at one end of the first resonator section away from the inner side edge of the octagonal peripheral frame, and the first connecting point and the second connecting point are located on the same side of the first resonator section.

3. The sheet metal stamping formed narrowband antenna element of claim 2, wherein, The resonator body is formed through the following processes:

4. The sheet metal stamping based narrowband antenna element according to any one of claims 1 to 3, characterized in that, The octagonal hollow structure and the four resonator arms are integrally formed through a plane sheet metal stamping process; The third resonator section of the four resonator arms is subjected to a bending operation to form the downwardly inclined feeding pin of the bending part; The length and radius of the semicircular arc of the second resonator section are adjusted according to the target frequency band requirement, the length of the semicircular arc ranges from 5 mm to 15 mm, and the radius ranges from 2 mm to 8 mm, so as to adjust the resonant frequency and impedance matching of the resonator. The distance between opposite sides of the octagonal peripheral frame ranges from 15 mm to 50 mm, and the area of the hollow region is 40% to 60% of the total area of the resonator body.

5. The sheet metal stamping based narrowband antenna element of claim 1, wherein, The welding mode of the feeding pin and the PCB board is spot welding or laser welding, and the feeding pins of each resonator arm are symmetrically distributed on the PCB board.

6. The sheet metal stamping based narrowband antenna element of claim 1, wherein, The resonator arms are uniformly distributed along the four symmetric axis directions of the octagonal peripheral frame, and the included angle between adjacent resonator arms is 90 degrees.

7. The sheet metal stamping based narrowband antenna element of claim 1, wherein, The PCB board is provided with a pad array corresponding to the feeding pin, the pad surface is silver-plated to improve the conductivity, and the pad edge is provided with a glue overflow prevention groove.

8. The sheet metal stamping based narrowband antenna element of claim 1, wherein, An insulating positioning column is arranged between the resonator body and the PCB board, and the positioning column is fixedly connected to the PCB board through a buckle structure.

9. The sheet metal stamping based narrowband antenna element of claim 1, wherein, An installation hole is arranged outside the octagonal peripheral frame of the resonator body, the number of the installation holes is four, and the hole diameter ranges from 3 mm to 5 mm, so as to be fixed to an antenna support through bolts.

10. The sheet metal stamping based narrowband antenna element of claim 1, wherein, ​

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