A magneto-electric dipole ultra-wideband antenna

Abstract

The application discloses a magneto-electric dipole super-wideband antenna and relates to the technical field of communication antennas.The application comprises a connector and an antenna main body assembly, the antenna main body assembly comprises a first radiating sheet and a second radiating sheet, the first radiating sheet and the second radiating sheet are respectively composed of two sides A, B and C, D, and the two sides A, B and C, D are respectively combined into L shapes; the application comprises an antenna directing assembly, the antenna directing assembly comprises a ring sheet, a convex sheet and a circular sheet, a reflecting plate, and the reflecting plate is connected with an inner folded edge and a side folded edge on the side close to the antenna main body assembly. Through special design of the reflecting plate, the antenna main body assembly, the antenna directing assembly and the baffle structure, the application realizes a magneto-electric dipole antenna with a standing wave of less than 1.5 in a 737-976&1480-3840&4190-4920 MHz super-wideband range, and the magneto-electric dipole antenna has good and stable directional diagram radiation performance in the working frequency band, covers the frequency band requirements of operators such as China Mobile (880-960&1710-2675 MHz) and China Telecom (806-960&1710-2500&3300-3700), and has strong practical value.

Description

Technical Field

[0001] This invention relates to the field of communication antenna technology, and specifically to a magnetoelectric dipole ultrawideband antenna. Background Technology

[0002] China Telecom requires indoor single-polarization wall-mounted displays to operate within a bandwidth of 806-960, 1710-2500, and 3300-3700MHz. This bandwidth necessitates maintaining good gain, a high front-to-back ratio, and a suitable horizontal 3dB beamwidth. Traditional solutions involve 3 or 2 units, but both suffer from excessive size and require additional combiners, increasing circuit losses. Therefore, if the aforementioned ultra-wideband operation could be achieved using only a single oscillator unit, it would effectively reduce size and cost.

[0003] Among them, the magnetoelectric dipole antenna is the key to realizing a single oscillator element. There is a duality between electric dipoles and magnetic dipoles. By simultaneously exciting electric dipoles and magnetic dipoles in a certain way, their radiation patterns are superimposed on two polarization planes. Finally, the same inverted cardioid radiation pattern can be obtained in the E-plane and H-plane. Such a radiation pattern has low back lobe, high front-to-back ratio and stable forward radiation performance.

[0004] The main reason why magnetoelectric dipole antennas have not been widely used is that it is difficult to achieve low standing wave ratios and stable radiation patterns over ultra-wideband. Currently, the achievable standing wave ratios within the operating bandwidth are generally ≤2.0, while antennas used in indoor distributed antenna systems require a standing wave ratio of ≤1.5. Therefore, a magnetoelectric dipole ultra-wideband antenna is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problems of traditional 3-unit or 2-unit solutions, which have excessive size, require additional combiners, increase circuit losses, and fail to achieve a standing wave ratio of ≤1.5 within the operating bandwidth achieved by a single oscillator unit. This invention provides a magnetoelectric dipole ultrawideband antenna.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0007] A magnetoelectric dipole ultrawideband antenna includes a connector and an antenna body assembly. The antenna body assembly includes a first radiating plate, a second radiating plate, and a three-fold feed line. The first and second radiating plates are composed of sides A and B, and sides C and D, respectively, and sides A and B and sides C and D are each combined into an L-shape. Sides A and C are polygonal shapes with unequal side lengths. The height of the three-fold feed line is lower than that of the first and second radiating plates. An antenna guiding assembly includes a ring plate, a convex plate, and a circular plate. The height of the ring plate, convex plate, and circular plate from the reflector is (0.3~0.5)λ2. A reflector has an inner folded edge and a side folded edge connected to the side of the reflector closest to the antenna body assembly.

[0008] Furthermore, the lengths of sides A and C are (0.2–0.3)λ², the widths are (0.25–0.4)λ², and the included angle between sides A and B is 75–85 degrees.

[0009] Furthermore, the included angle between side C and side D is 65-80 degrees, side B is perpendicular to the reflector, side D is tilted towards the three-fold feed line at a certain angle of 3-10 degrees, and the height of side B and side D is (0.2~0.4)λ2.

[0010] Furthermore, the number of inner folded edges is at least two, and a gap is provided between the two inner folded edges. One end of the connector is connected to a connecting line, which is connected to the first radiating plate and the three-folded edge feed line through the gap. The first folded edge is connected to the connecting line in the three-folded edge feed line, the second folded edge is connected to the first folded edge, and the third folded edge is connected to the second folded edge away from the first folded edge. The widths of the first folded edge, the second folded edge, and the third folded edge are different.

[0011] Furthermore, the height of the side fold is (5-20) mm, the height of the inner fold is (0.08-0.15)λ1, and the inward fold angle is 5-10 degrees.

[0012] Furthermore, the annular piece has a hollowed-out center and a length and width of (0.3~0.4)λ1. The part of the annular piece near the first radiating piece has a square protrusion, and the part near the second radiating piece has an elongated protrusion. The annular piece is located near the inner folded edge and above the first and second radiating pieces.

[0013] Furthermore, the convex piece is located above the three-fold edge feed line and close to the first radiating piece, the circular piece is not in a straight line with the three-fold edge feed line and the second radiating piece and is located in the middle of them, and the diameter of the circular piece is (0.15~0.35)λ3.

[0014] Furthermore, it also includes a baffle structure, which includes a vertical plate and a parallel plate. The width of the vertical plate is (0.25~0.45)λ1 and the height is (0.1~0.2)λ1. The vertical plate is mounted on the reflector plate. The length of the parallel plate is (0.15~0.25)λ1 and the width is (0.03~0.08)λ1.

[0015] Furthermore, the antenna body assembly is located near the inner folded edge and at the center of the direction perpendicular to the reflector and the connector. The length of the reflector is (0.45~0.65)λ1 and the width is (0.33~0.53)λ1. The side of the reflector away from the antenna body assembly is provided with a stamped protrusion.

[0016] Furthermore, the first radiating sheet and the first folded edge are connected by a non-metallic material, and the second radiating sheet and the third folded edge are connected by a non-metallic material. The non-metallic material includes nylon pillars and plastic parts. Both the first and second radiating sheets have protruding leads, and their leads are in direct contact or coupled contact with the reflector.

[0017] The beneficial effects of this invention are as follows: Through special design of the reflector, antenna main body assembly, antenna guiding assembly, baffle structure, etc., this invention realizes a magnetoelectric dipole antenna with a standing wave ratio ≤1.5 in the ultra-wideband range of 737-976, 1480-3840, and 4190-4920MHz, and has good and stable radiation pattern performance in the operating frequency band, covering the frequency band requirements of operators such as China Mobile (880-960, 1710-2675MHz) and China Telecom (806-960, 1710-2500, and 3300-3700MHz), and has strong practical value. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the rear view structure of the present invention;

[0021] Figure 4 This is a bottom-view structural diagram of the present invention;

[0022] Figure 5 This is the radiation performance table of the present invention.

[0023] Reference numerals: 1. Connector; 11. Connecting line; 2. Reflector; 21. Inner folded edge; 22. Gap; 23. Side folded edge; 3. Antenna main body assembly; 31. First radiating plate; 32. Second radiating plate; 33. Triple-folded edge feed line; 4. Antenna guiding assembly; 41. Ring plate; 42. Protrusion; 43. Circular plate; 44. Square protrusion; 45. Elongated protrusion; 5. Baffle structure; 51. Vertical plate; 52. Parallel plate; 6. Stamped protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present 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 limiting the present invention.

[0028] A magnetoelectric dipole ultrawideband antenna is disclosed. Because this antenna achieves ultrawideband operation, different structures have varying degrees of effectiveness in different frequency bands. Therefore, f1, f2, and f3 are used to represent the center frequencies of the three bands, where f1 = 850MHz, f2 = 2200MHz, and f3 = 3500MHz. Their corresponding wavelengths are λ1 = 350mm, λ2 = 136mm, and λ3 = 86mm, respectively. The relevant information is described, including connector 1 and antenna main assembly 3. Antenna main assembly 3 includes a first radiating plate 31, a second radiating plate 32, and a three-fold feed line 3. 3. The first radiating plate 31 and the second radiating plate 32 are composed of sides A, B and C, D respectively, and sides A, B and C, D are combined into L-shapes. Sides A and C are polygonal with unequal side lengths. The height of the three-fold feed line 33 is lower than that of the first radiating plate 31 and the second radiating plate 32. The antenna guiding assembly 4 includes a ring plate 41, a protruding plate 42 and a circular plate 43. The height of the ring plate 41, the protruding plate 42 and the circular plate 43 from the reflector plate 2 is (0.3~0.5)λ2. The reflector plate 2 has an inner folded edge 21 and a side folded edge 23 connected to the side of the reflector plate 2 closest to the antenna body assembly 3.

[0029] like Figure 3 As shown, the length of side A and side C is (0.2~0.3)λ2, the width is (0.25~0.4)λ2, and the included angle between side A and side B is 75-85 degrees.

[0030] like Figure 3 As shown, the angle between side C and side D is 65-80 degrees, side B is perpendicular to reflector 2, and side D is tilted at a certain angle of 3-10 degrees towards the three-fold feed line 33. The height of side B and side D is (0.2~0.4)λ2, which can better balance the radiation pattern performance and standing wave performance of the f1 and f3 frequency bands. At the same time, after being electrically connected with reflector 2, it realizes the function of magnetic dipole.

[0031] It should be noted that these measures improve the antenna's radiation efficiency in the f2 and f3 frequency bands, while further enhancing the antenna's standing wave ratio across the entire frequency band and expanding the antenna's operating bandwidth. Sides A and C achieve electric dipole functionality, with the end-to-end distance between sides A and C being (0.3 to 0.5)λ1, which excites the electric dipole effect of the antenna in the f1 frequency band. Furthermore, the use of an octagonal shape with unequal side lengths extends the current path and expands the antenna's operating bandwidth in the f2 and f3 frequency bands.

[0032] The height of the three-fold edge feed line 33 is lower than that of the first radiating plate 31 and the second radiating plate 32. By coupling the first radiating plate 31 and the second radiating plate 32, which are equivalent to electric dipoles, the operating characteristics of the two dipoles are excited simultaneously. According to the antenna principle, the electric dipole radiates in a figure-eight shape in the E-plane and in an o-shape in the H-plane; the magnetic dipole is o-shaped in the E-plane and figure-eight in the H-plane. This invention excites the two dipoles with equal amplitude and phase, so that their radiation patterns are superimposed and the same heart-shaped pattern is generated in the E-plane and H-plane, thereby effectively suppressing back radiation and achieving a high front-to-back ratio and stable forward radiation performance.

[0033] There are three small holes on side B, called the first, second, and third holes; three small holes on the first folded edge, called the fourth, fifth, and sixth holes; and one small hole on the third folded edge, called the seventh hole. There are two small holes on side D, called the eighth and ninth holes. The center heights of the first and fourth holes are the same. The function of the first hole is to allow the connecting wire 11 to pass through and be connected and welded together. The connecting wire 11 passes through the first hole to reach the fourth hole and is welded, which is used to supply power to the three-folded edge feeder 33.

[0034] The second and third holes and the fifth and sixth holes are at the same height at the center of the circle. The second and third holes and the fifth and sixth holes are connected together by non-metallic materials such as nylon pillars and plastic parts to strengthen the structural strength of the first radiating plate 31 and the three-fold feed line 33, and to avoid the antenna performance from abnormal due to deformation of the first radiating plate 31 and the three-fold feed line 33 themselves or deformation under external force.

[0035] The seventh and eighth holes are at the same height at the center. Since the three-fold feed line 33 will deform under the influence of gravity, the seventh and eighth holes are connected together by non-metallic materials such as nylon pillars or plastic parts, which effectively improves the structural strength of the three-fold feed line 33 and the second radiating plate 32. If holes are drilled in the plane part of the three-fold feed line 33 and supported by non-metallic materials such as nylon pillars or plastic parts, it is also to strengthen the structural strength of the three-fold feed line 33. Since both are within the protection scope of this invention, the ninth hole is a reserved hole, which can be further strengthened or canceled according to the actual situation.

[0036] like Figure 1As shown, there are at least two inner folded edges 21. A gap 22 is provided between the two inner folded edges 21. The width of the gap 22 should be greater than that of the connecting line 11. The position of the gap 22 is not required to be exactly in the middle of the two inner folded edges 21. In addition to allowing the connecting line 11 to pass through the gap 22 and connect to the antenna main body assembly 3, it can also change the current path and reduce the obstruction of the first radiating sheet 31, thereby further improving the radiation pattern index. One end of the connector 1 is connected to the connecting line 11. The connecting line 11 is connected to the first radiating sheet 31 and the three-folded edge feed line 33 through the gap 22. The one connected to the connecting line 11 in the three-folded edge feed line 33 is the first folded edge. The one connected to the first folded edge is the second folded edge. The one connected to the second folded edge away from the first folded edge is the third folded edge. The widths of the first folded edge, the second folded edge and the third folded edge are different.

[0037] like Figure 1 As shown, the height of the side fold 23 is (5~20) mm, and the height of the inner fold 21 is (0.08~0.15)λ1. Preferably, the height of the side fold 23 is the same as or slightly lower than the height of the first radiating plate 31 of the antenna main body assembly 3. This serves two purposes: firstly, to increase the structural strength of the reflector 2, and secondly, to adjust the front-to-back ratio of the f1 band and the horizontal 3dB beamwidth of the f2 and f3 bands. The inward fold angle is 5-10 degrees. Through the above measures, the reflector 2 and the first radiating plate 31 are brought closer together, which greatly enhances the coupling current intensity, thereby improving the standing wave of the f1 band.

[0038] like Figure 1 As shown, the ring plate 41 has a hollowed-out center and a length and width of (0.3~0.4)λ1. The part of the ring plate 41 near the first radiating plate 31 has a square protrusion 44, and the part near the second radiating plate 32 has an elongated protrusion 45. The ring plate 41 is close to the inner folded edge 21 and is located above the first radiating plate 31 and the second radiating plate 32.

[0039] like Figure 1 As shown, the protruding piece 42 is located above the three-fold feed line 33 and close to the first radiating piece 31. The circular piece 43 is not in a straight line with the three-fold feed line 33 and the second radiating piece 32 and is located in the middle of them. The diameter of the circular piece 43 is (0.15~0.35)λ3. The protruding piece 42 extends the working bandwidth of the antenna, and the circular piece 43 extends the working bandwidth of the antenna in the f3 and higher frequency bands.

[0040] It should be noted that the square protrusion 44 and the elongated protrusion 45 on the ring plate 41 are used to increase the coupling current intensity without causing excessive obstruction to the first radiating plate 31 and the second radiating plate 32. In use, the ring plate 41 is located slightly below the center of the two radiating plates. The loading of this structure changes the diffraction path of the electromagnetic wave, improves the antenna radiation efficiency, and expands the working bandwidth. Moreover, the ring plate 41, the protrusion 42 and the circular plate 43 do not need to be the same height.

[0041] In addition, the antenna guide assembly 4 has one or more holes corresponding to the holes on the reflector 2. It is supported by non-metallic materials such as nylon pillars or plastic parts to achieve the function of placing it above the antenna and fixing it. In order to reduce the complexity of assembly, the antenna guide assembly 4 can also be fastened to the outer cover (not shown in the figure) by means including but not limited to heat fusion and pressing. If this method is adopted, the ring plate 41, the convex plate 42 and the circular plate 43 are preferably at the same height, which can effectively reduce the processing cost.

[0042] like Figure 1 As shown, it also includes a baffle structure 5, which has a C-shaped shape. The baffle structure 5 includes a vertical plate 51 and a parallel plate 52. The width of the vertical plate 51 is (0.25~0.45)λ1 and the height is (0.1~0.2)λ1. The vertical plate 51 is mounted on the reflector 2. This part plays a good role in optimizing the front-to-back ratio and standing wave ratio of the f1 band. The length of the parallel plate 52 is (0.15~0.25)λ1 and the width is (0.03~0.08)λ1. The parallel plate 52 has holes for connecting and fixing with the corresponding holes of the reflector 2. The parallel plate 52 faces the second radiating plate 32 to achieve the effect of 3dB beamwidth convergence of the antenna in the horizontal plane of the f1 band, so that the antenna can achieve better coverage.

[0043] like Figure 3 As shown, the antenna main body assembly 3 is close to the inner folded edge 21 and is located in the center of the vertical direction between the reflector 2 and the connector 1. This placement can obtain a uniform radiation pattern and improve the standing wave level. The length of the reflector 2 is (0.45~0.65)λ1 and the width is (0.33~0.53)λ1. If the reflector 2 is too small, the standing wave in the f1 band will be worse. If the reflector 2 is too large, the horizontal beamwidth in the f2 and f3 bands will be too narrow or even deformed. The side of the reflector 2 away from the antenna main body assembly 3 is provided with a stamped protrusion 6 to meet the actual use scenario of installation on the wall.

[0044] like Figure 3 As shown, the first radiating plate 31 and the first folded edge are connected by non-metallic materials, and the second radiating plate 32 and the third folded edge are connected by non-metallic materials. The non-metallic materials include nylon pillars and plastic parts. Both the first radiating plate 31 and the second radiating plate 32 have protruding pins, and their pins are in direct contact or coupled contact with the reflector plate 2 to achieve electrical conduction.

[0045] like Figure 5As shown, the present invention exhibits good and stable radiation performance within its operating frequency band. For example, China Telecom wall-mounted antennas in the 806-960, 1710-2500, and 3300-3700MHz bands have gain requirements of ≥5, 7, and 7dBi, respectively; horizontal plane bandwidth requirements of 75-105, 60-90, and 35-75°, respectively; and front-to-back ratio requirements of ≥8, 10, and 10dB, respectively. The present invention, within the frequency bands required by China Telecom, achieves gains of ≥5.78, 7.92, and 8.62dBi, horizontal plane bandwidths of 84-87, 69-83, and 41-62°, and front-to-back ratios of ≥16.3, 18.5, and 12.4dB, respectively. Similarly, China Mobile wall-mounted antennas in the 880-960 and 1710-202MHz bands... Within the 52300-2675MHz frequency range, the gain requirements are ≥5.5, 6.5, and 7dBi, respectively; the horizontal plane bandwidth requirements are 75-105°, 60-90°, and 60-90°, respectively; and the front-to-back ratio requirements are ≥10, 13, and 13dB, respectively. However, within the frequency band required by China Mobile, the gain requirements of this invention are ≥6.3, 8.1, and 7.6dBi, the horizontal plane bandwidth is 86-87°, 71-74°, and 69-83°, and the front-to-back ratio is ≥16.5, 22.7, and 18.5dB, respectively. Therefore, this invention has broad application value and can meet the antenna specifications required by operators such as China Telecom, China Tower, China Mobile, and China Unicom. It can also meet the application needs of overseas customers in the 700MHz band and domestic 5G applications in the 4800MHz band.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A magnetoelectric dipole ultrawideband antenna, characterized in that: include The connector (1) and the antenna body assembly (3) include a first radiating plate (31), a second radiating plate (32) and a three-fold feed line (33). The first radiating plate (31) and the second radiating plate (32) are composed of sides A, B and C, D respectively, and sides A, B and C, D are each combined into an L shape. Sides A and C are polygonal with unequal side lengths. The height of the three-fold feed line (33) is lower than that of the first radiating plate (31) and the second radiating plate (32). Antenna guiding assembly (4), the antenna guiding assembly (4) includes a ring plate (41), a protrusion plate (42) and a circular plate (43), the ring plate (41), the protrusion plate (42) and the circular plate (43) are at a height of (0.3~0.5)λ2 from the reflector plate (2); The reflector (2) has an inner folded edge (21) and a side folded edge (23) connected to the side of the reflector (2) near the antenna body assembly (3).

2. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that, The lengths of sides A and C are (0.2~0.3)λ², and the widths are (0.25~0.4)λ². The angle between sides A and B is 75-85 degrees.

3. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that, The angle between side C and side D is 65-80 degrees. Side B is perpendicular to the reflector (2). Side D is tilted at a certain angle to the three-fold feed line (33), with an angle of 3-10 degrees. The height of side B and side D is (0.2~0.4)λ2.

4. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that, The number of inner folded edges (21) is at least two, and a gap (22) is provided between the two inner folded edges (21). One end of the connector (1) is connected to a connecting line (11). The connecting line (11) is connected to the first radiating plate (31) and the three-folded edge feed line (33) through the gap (22). The three-folded edge feed line (33) connected to the connecting line (11) is the first folded edge, the first folded edge is connected to the second folded edge, and the second folded edge is connected to the third folded edge away from the first folded edge. The widths of the first folded edge, the second folded edge, and the third folded edge are different.

5. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that: The height of the side fold (23) is (5~20) mm, the height of the inner fold (21) is (0.08~0.15)λ1, and the inward fold angle is 5-10 degrees.

6. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that: The ring (41) has a hollowed-out center and a length and width of (0.3~0.4)λ1. The part of the ring (41) near the first radiating plate (31) has a square protrusion (44), and the part near the second radiating plate (32) has an elongated protrusion (45). The ring (41) is close to the inner folded edge (21) and is located above the first radiating plate (31) and the second radiating plate (32).

7. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that: The convex piece (42) is located above the three-fold edge feed line (33) and close to the first radiating piece (31). The circular piece (43) is not in a straight line with the three-fold edge feed line (33) and the second radiating piece (32) and is located in the middle of them. The diameter of the circular piece (43) is (0.15~0.35)λ3.

8. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that: It also includes a baffle structure (5), which includes a vertical plate (51) and a parallel plate (52). The vertical plate (51) has a width of (0.25~0.45)λ1 and a height of (0.1~0.2)λ1. The vertical plate (51) is mounted on the reflector plate (2). The parallel plate (52) has a length of (0.15~0.25)λ1 and a width of (0.03~0.08)λ1.

9. The magnetoelectric dipole ultrawideband antenna according to claim 1, characterized in that: The antenna main body assembly (3) is close to the inner folded edge (21) and is located in the center of the vertical direction between the reflector (2) and the connector (1). The length of the reflector (2) is (0.45~0.65)λ1 and the width is (0.33~0.53)λ1. The side of the reflector (2) away from the antenna main body assembly (3) is provided with a stamped protrusion (6).

10. The magnetoelectric dipole ultrawideband antenna according to claim 4, characterized in that: The first radiating plate (31) and the first folded edge are connected by a non-metallic material, and the second radiating plate (32) and the third folded edge are connected by a non-metallic material. The non-metallic material includes nylon pillars and plastic parts. Both the first radiating plate (31) and the second radiating plate (32) have protruding pins, and their pins are in direct contact or coupled contact with the reflector (2).

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