Miniaturized ultra-wideband antenna and mobile control terminal

Abstract

The utility model provides a miniaturized ultra-wideband antenna and a mobile control terminal. The antenna comprises a radiation layer, a dielectric layer and a defect ground layer which are stacked in sequence, the radiation layer comprises a micro-strip feeder line and a rectangular radiation sheet; the rectangular radiation sheet is connected with one end of the microstrip feeder; the rectangular radiation sheet is provided with a pair of strip-shaped gaps which are distributed in an axial symmetry manner. An L-shaped gap is formed in the edge of the defect ground layer, a transverse branch of the L-shaped gap corresponds to the rectangular radiation sheet, and a vertical branch of the L-shaped gap is parallel to the microstrip feeder line; and the vertical support and the strip-shaped gap are respectively positioned on two sides of the microstrip feeder line. According to the utility model, the antenna miniaturization and ultra wide band compatibility can be realized, so that the accurate positioning performance of a small mobile control terminal equipped with the antenna is improved. The method is especially suitable for a miniaturized gamepad, can effectively improve the positioning performance, and optimizes the game experience.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a miniaturized ultra-wideband antenna and a mobile control terminal. Background Art

[0002] With the diversification of the functions of intelligent mobile terminals, the game functions on them are becoming increasingly powerful. Intelligent mobile terminals usually directly control games through touch on their touch screens. For players, it is difficult to obtain the best gaming experience when controlling games on a small touch screen. To solve this problem, various game controllers have gradually emerged on the market. Players can control games on a large screen through the game controller, giving players a better gaming experience. However, the volume of the game controller is usually small, which limits the antenna of the game controller due to its physical characteristics, resulting in a narrow radiation frequency band and thus a defect of poor positioning performance. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a miniaturized ultra-wideband antenna and a mobile control terminal, which can achieve the compatibility of antenna miniaturization and ultra-wideband, so as to improve the positioning performance of the small mobile control terminal equipped with this antenna.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0005] The miniaturized ultra-wideband antenna includes a radiation layer, a dielectric layer and a defective ground layer which are sequentially stacked; the radiation layer includes a microstrip feeder and a rectangular radiation patch; the rectangular radiation patch is connected to one end of the microstrip feeder; a pair of axially symmetrically distributed strip-shaped slots are opened on the rectangular radiation patch; an L-shaped slot is opened at the edge of the defective ground layer, the horizontal branch of the L-shaped slot corresponds to the rectangular radiation patch, and the vertical branch of the L-shaped slot is parallel to the microstrip feeder.

[0006] Optionally, the pair of axially symmetrically distributed strip-shaped slots includes a first strip-shaped slot and a second strip-shaped slot; one end of the first strip-shaped slot and the second strip-shaped slot is connected to the edge of the rectangular radiation patch.

[0007] Optionally, the first strip-shaped slot and the second strip-shaped slot are parallel to the microstrip feeder.

[0008] Optionally, the first strip-shaped slot and the second strip-shaped slot are arranged at a position close to the edge of the rectangular radiation patch.

[0009] Optionally, the length value range of the first strip-shaped slot and the second strip-shaped slot is 1.5 - 2.5 mm, and the width value range is 0.4 - 0.8 mm.

[0010] Optionally, the distance between the pair of strip slots and the microstrip feeder ranges from 2.6 to 3.2 mm.

[0011] Optionally, the length of the dielectric layer ranges from 21 to 23 mm, and the width ranges from 19 to 22 mm; the length of the rectangular radiation patch ranges from 6 to 8 mm, and the width ranges from 7 to 9 mm; the length of the microstrip feeder ranges from 7 to 9 mm, and the width ranges from 1.5 to 1.6 mm;

[0012] In the length direction of the dielectric layer, the distance between the edge of the rectangular radiation patch away from the microstrip feeder and the corresponding edge of the dielectric layer ranges from 6 to 8 mm; in the width direction of the dielectric layer, the distance between the edge of the rectangular radiation patch away from the strip slot and the corresponding edge of the dielectric layer ranges from 6 to 8 mm.

[0013] Optionally, the width of the horizontal branch of the L-shaped slot ranges from 6.0 to 8.0 mm, and the length ranges from 5.0 to 6.0 mm; the width of the vertical branch of the L-shaped slot ranges from 4.5 to 6.5 mm, and the length ranges from 12 to 16 mm.

[0014] Another technical solution provided by the present invention is:

[0015] A mobile terminal includes the above-mentioned miniaturized ultra-wideband antenna.

[0016] Optionally, the mobile terminal is a game controller or a remote control.

[0017] The beneficial effects of the present invention are as follows: providing a miniaturized and ultra-wideband antenna that can be better applied to small mobile control terminals such as game controllers or remote controls, so as to improve the positioning performance of the mobile control terminal. The miniaturized ultra-wideband antenna of the present invention is composed of a radiation layer, a dielectric layer and a defect ground layer stacked. Among them, a pair of axially symmetrically distributed strip slots are opened on the radiation layer to increase the bandwidth and optimize the matching; at the same time, an L-shaped slot is opened on the edge of the defect ground layer to further increase the bandwidth and optimize the matching, and the directional antenna can be converted into an omnidirectional antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention;

[0019] Figure 2 It is a front view of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention;

[0020] Figure 3Back view of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention;

[0021] Figure 4 Dimension parameter comparison diagram in the front view of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention;

[0022] Figure 5 Dimension parameter comparison diagram in the back view of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention;

[0023] Figure 6 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter L S1 changing;

[0024] Figure 7 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter W S1 changing;

[0025] Figure 8 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter L S2 changing;

[0026] Figure 9 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter W S2 changing;

[0027] Figure 10 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter L S3 changing;

[0028] Figure 11 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter W S3 changing;

[0029] Figure 12 Curve graph of the passband variation of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention with the parameter D3 changing;

[0030] Figure 13 Simulation result graph of the reflection coefficient of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention when using optimized parameters;

[0031] Figure 14 Radiation pattern of the miniaturized ultra-wideband antenna provided by the embodiment of the present invention at 4.5 GHz when using optimized parameters;

[0032] Figure 15The radiation pattern at 6.5 GHz of the miniaturized ultra-wideband antenna provided by the embodiment of the present utility model when using optimized parameters;

[0033] Figure 16 The radiation pattern at 8.5 GHz of the miniaturized ultra-wideband antenna provided by the embodiment of the present utility model when using optimized parameters. Specific embodiments

[0034] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0035] Embodiment 1

[0036] Please refer to Figures 1 to 3 This embodiment provides a miniaturized ultra-wideband antenna. As shown in Figure 1 , the miniaturized ultra-wideband antenna includes a radiation layer 1, a dielectric layer 2 and a defect ground layer 3 with a stacked structure; wherein, the radiation layer 1 is mounted on the upper surface of the dielectric layer 2, and the defect ground layer 3 is mounted on the lower surface of the dielectric layer 2. The radiation layer 1 and the defect ground layer 3 are made of a metal material.

[0037] As shown in Figure 1 and Figure 2 , the radiation layer 1 includes a microstrip feeder 11 and a rectangular radiation patch 12; one end of the microstrip feeder 11 is connected to one side of the rectangular radiation patch 12, and the two are in a "wooden hammer" shape; the other end of the microstrip feeder 11, that is, the feeding end, is connected to the edge of the dielectric layer 2; at the same time, a pair of strip-shaped slots 121 are opened on the rectangular radiation patch 12, and the two strip-shaped slots in the pair of strip-shaped slots are axially symmetrically distributed.

[0038] In some specific embodiments, the two strip-shaped slots in the pair of strip-shaped slots are respectively a first strip-shaped slot 121a and a second strip-shaped slot 121b; the two end points of the first strip-shaped slot 121a and the second strip-shaped slot 121b that are far away from each other are connected to the edge of the rectangular radiation patch 12. That is to say, the rectangular radiation patch 12 is in an overall "H" shape.

[0039] Preferably, the first strip-shaped slot 121a and the second strip-shaped slot 121b located on the same straight line are parallel to the microstrip feeder 11.

[0040] Preferably, the first strip-shaped slot 121a and the second strip-shaped slot 121b are opened at positions close to the edge of the rectangular radiation patch 12. Specifically, the pair of strip-shaped slots 121 can be arranged at positions close to the edge on the right side of the rectangular radiation patch 12, or can be arranged at positions close to the edge on the left side of the rectangular radiation patch 12.

[0041] The layout of the first line slot 121a and the second line slot 121b in the above three preferred designs can ensure the symmetry of the structure and optimize the radiation performance of the antenna.

[0042] In this embodiment, the slot layout design of the radiation layer can change the surface current distribution and magnetic field distribution on the antenna surface at the high frequency of the passband, reduce the imaginary component of the input impedance, and thus can play the role of increasing the bandwidth, optimizing the reflection coefficient in the band, and optimizing the matching.

[0043] As Figure 1 and Figure 3 shown, the defective ground plane 3 is provided with an L-shaped slot 31 at the edge position of one of its sides. The L-shaped slot 31 includes a horizontal branch 311 and a vertical branch 312; the horizontal branch 311 corresponds to the rectangular radiation patch 12 in the top-down perspective, that is, they overlap; the vertical branch 312 is parallel to the microstrip feeder 11, that is, they do not overlap in the top-down perspective and are parallel to each other; the vertical branch 312 and the strip slot 121 located in the radiation layer 1 are on the same side of the microstrip feeder 11.

[0044] In this embodiment, the slot layout design of the defective ground plane can improve the working environment of the radiation patch, reduce the Q value of the antenna, and enable the energy transmitted to the antenna radiation patch to radiate in all directions, thus being able to further increase the bandwidth and optimize the reflection coefficient in the band. At the same time, it can also convert the directional antenna into an omnidirectional antenna; in addition, it also has the advantages of simple structure and fewer parameters to be optimized.

[0045] Embodiment 2

[0046] Please refer to Figures 4 to 16 , this embodiment is further expanded based on Embodiment 1, specifically optimizing the slot parameters of the radiation layer and the defective layer of the antenna to obtain better antenna performance.

[0047] For the miniaturized ultra-wideband antenna provided in Embodiment 1, its working center frequency is mainly determined by the parameters of the radiation patch (including the microstrip feeder and the rectangular radiation patch) that constitutes the radiation layer; its radiation performance is mainly determined by the parameters of the L-shaped slot that constitutes the defective ground plane.

[0048] In this embodiment, as Figure 4 shown, the overall size of the circuit board formed by laminating the radiation layer, the dielectric layer, and the defective ground plane is length L G * width W G ; among them, the preferred value range of the length L G is 21 - 23 mm; the preferred value range of the width W G is 19 - 22 mm. In a preferred example, the overall size of the circuit board is length L G * width W G= 22mm * 20.5mm.

[0049] As Figure 4 shown in the front side of the circuit board layout, the length L of the microstrip feeder in the radiation layer thereon F has a preferred value range of 7 - 9mm, and the width W F has a preferred value range of 1.5 - 1.6mm. In a preferred example, the microstrip feeder is a 50 - ohm feeder, and the size is L F *W F = 8.0 * 1.53mm.

[0050] The length L of the rectangular radiation patch R has a preferred value range of 6 - 8mm, and the width W R has a preferred value range of 7 - 9mm. In a preferred example, the size of the rectangular radiation patch is L R *W R = 7.0 * 8.1mm. In the width direction of the dielectric layer, the preferred value range of the distance D1 between the side of the rectangular radiation patch far from the strip - shaped gap and the opposite side of the dielectric layer (i.e., the circuit board edge) is 6 - 8mm; in the length direction of the dielectric layer, the preferred value range of the distance D2 between the side of the rectangular radiation patch far from the microstrip feeder and the corresponding side of the dielectric layer (i.e., the circuit board edge) is 6 - 8mm. In a preferred example, the distance D1 = 7.0mm; the distance D2 = 7.0mm.

[0051] The length L of the first strip - shaped gap and the second strip - shaped gap opened in the rectangular radiation patch S1 has a preferred value range of 1.5 - 2.5mm, and the width W S1 has a preferred value range of 0.4 - 0.8mm. In a preferred example, the sizes of the first strip - shaped gap and the second strip - shaped gap are L S1 *W S1 = 2.5 * 0.4mm. At the same time, the preferred value range of the perpendicular distance D3 between the first strip - shaped gap and the microstrip feeder is 2.6 - 3.2mm. In a preferred example, the distance D3 from the first strip - shaped gap to the microstrip feeder is 2.6mm.

[0052] As Figure 5 shown in the back side of the circuit board layout, the width W of the horizontal branch of the L - shaped gap in the defective ground layer thereon S3 has a preferred value range of 6.0 - 8.0mm; the length L of the horizontal branch of the L - shaped gap S3 has a preferred value range of 5.0 - 6.0mm. In a preferred example, the size of the horizontal branch in the L - shaped gap is W S3 *L S3= 6.0 * 6.0 mm. The width W of the vertical branch of the L-shaped slot S2 ranges from 4.5 - 6.5 mm, and the length L S2 ranges from 12 - 16 mm. In a preferred example, the dimensions of the vertical branch of the L-shaped slot are W S2 * L S2 = 5.5 * 14.0 mm.

[0053] In a preferred example, the dielectric constant of the dielectric layer is 4.4, the dielectric loss is 0.02, and the thickness is 0.8 mm; the radiation layer and the defect ground layer are copper-plated metal layers, and the single-layer thickness is 0.035 mm.

[0054] Next, the expected antenna performance achieved by the preferred values of the key parameters in the miniaturized ultra-wideband antenna provided in this embodiment will be verified through experimental data.

[0055] As Figure 6 shown, it is the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter L S1 changing. It can be seen that as the length L S1 of the first strip slot and the second strip slot increases, the reflection coefficient within the antenna passband remains basically unchanged in the low-frequency part, improves in the middle-frequency part and the high-frequency part, and the passband becomes wider. Based on this, in this embodiment, by limiting the preferred value range of the length L S1 of the first strip slot and the second strip slot to 1.5 - 2.5 mm, and the optimal value to 2.5 mm, it can be ensured that when the antenna is within the preferred range, especially when the optimal value is obtained, the antenna has the widest bandwidth and the best matching within the passband.

[0056] As Figure 7 shown, it is the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter W S1 changing. It can be seen that as the width W S1 of the first strip slot and the second strip slot increases, the reflection coefficient within the antenna passband remains basically unchanged in the low-frequency part, improves in the middle-frequency part, deteriorates in the high-frequency part, and the passband becomes narrower. Based on this, in this embodiment, by limiting the preferred value range of the width W S1 of the first strip slot and the second strip slot to 0.4 - 0.8 mm, and the optimal value to 0.4 mm, it can be ensured that within the selected range, especially when the optimal value is obtained, the antenna has the widest bandwidth and the best matching within the passband.

[0057] As Figure 8 shown, it is the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter L S2 changing. It can be seen that as the length L S2As it increases, the reflection coefficient within the antenna passband will improve in the low-frequency part, first improve and then deteriorate in the intermediate-frequency part, first deteriorate and then improve in the high-frequency part, and the passband will first widen and then narrow. Based on this, in this embodiment, by limiting the length L of the vertical branch in the L-shaped slot S2 The preferred value range is 12 - 16 mm, and the optimal value is 14.0 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained.

[0058] As Figure 9 shown, this figure shows the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter W S2 As the width W of the vertical branch in the L-shaped slot increases, the reflection coefficient within the antenna passband will deteriorate in the low-frequency part, improve in the intermediate-frequency part, and deteriorate in the high-frequency part, and the passband will narrow. Based on this, in this embodiment, by limiting the width W of the vertical branch in the L-shaped slot S2 The preferred value range is 4.5 - 6.5 mm, and the optimal value is 5.5 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained. S2 The preferred value range is 4.5 - 6.5 mm, and the optimal value is 5.5 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained.

[0059] As Figure 10 shown, this figure shows the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter L S3 As the length L of the horizontal branch in the L-shaped slot increases, the reflection coefficient within the antenna passband will deteriorate in the low-frequency part, improve in the intermediate-frequency part, and deteriorate in the high-frequency part, and the passband bandwidth is the largest when L S3 = 5.5 mm. Based on this, in this embodiment, by limiting the length L of the horizontal branch in the L-shaped slot S3 The preferred value range is 5.0 - 6.0 mm, and the optimal value is 5.5 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained. S3 The preferred value range is 5.0 - 6.0 mm, and the optimal value is 5.5 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained.

[0060] As Figure 11 shown, this figure shows the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter W S3 As the width W of the horizontal branch in the L-shaped slot increases, the reflection coefficient within the antenna passband will deteriorate in the low-frequency part, first improve and then deteriorate in the intermediate-frequency part, first deteriorate and then improve in the high-frequency part, and the bandwidth will narrow. Based on this, in this embodiment, by limiting the width W of the horizontal branch in the L-shaped slot S3 The preferred value range is 6.0 - 8.0 mm, and the optimal value is 6 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained S3 The preferred value range is 6.0 - 8.0 mm, and the optimal value is 6 mm. This can make the antenna have the widest bandwidth and the best matching within the passband, especially when the optimal value is obtained

[0061] AsFigure 12 As shown, it is the variation of the miniaturized ultra-wideband antenna provided in this embodiment with the parameter D3. It can be seen that as the vertical distance D3 between the strip slot and the microstrip feeder increases, the reflection coefficient within the antenna passband remains basically unchanged in the low-frequency part, deteriorates in the middle-frequency part, deteriorates in the high-frequency part, and the bandwidth narrows. Based on this, in this embodiment, by limiting the preferred value range of the vertical distance D3 between the strip slot and the microstrip feeder to be 2.6 - 3.2 mm, and the optimal value to be 2.6 mm, it can be ensured that within the preferred range, especially when the optimal value is obtained, the antenna has the widest bandwidth and the best matching within the passband.

[0062] Based on the above analysis, combined with Figure 4 and Figure 5 , the following are examples of the optimized parameters of the miniaturized ultra-wideband antenna provided in this embodiment:

[0063] L G = 22.0 mm, W G = 20.5 mm, L S1 = 2.5 mm, W S1 = 0.4 mm, L S2 = 14.0 mm, W S2 = 5.5 mm, L S3

[0064] = 5.5 mm, W S3 = 6.0 mm, D1 = 7.0 mm, D2 = 7.0 mm, D3 = 2.6 mm, L R = 7.0 mm, W R = 8.1 mm, L F = 8.0 mm, W F = 1.53 mm.

[0065] As Figure 13 shown, it is the simulation result of the reflection coefficient of the miniaturized ultra-wideband antenna corresponding to the above example of optimized parameters. It can be known that the bandwidth range of the reflection coefficient of this antenna less than -10 dB is from 3.48 to 9.86 GHz, the center frequency is 6.67 GHz, the absolute bandwidth is 6.38 GHz, and the relative bandwidth is 95.7%, showing the characteristics of an ultra-wideband. At the same time, the radiation pattern of this ultra-wideband antenna is as Figures 14 - 16 shown. It can be known that this miniaturized ultra-wideband antenna is an omnidirectional antenna and has a high gain.

[0066] Embodiment 3

[0067] This embodiment is further expanded based on Embodiment 1 or Embodiment 2, and provides a mobile control terminal including the miniaturized ultra-wideband antenna of Embodiment 1 or Embodiment 2 above.

[0068] In some specific implementations, the mobile control terminal is further provided with an electric control component, and the electric control component is directly connected to the miniaturized ultra-wideband antenna; the electric control component may include an electric control board and a battery, etc.

[0069] In some specific implementations, the mobile control terminal is a game controller or a remote controller. Of course, the mobile terminal can also be other terminal devices with wireless connection and positioning requirements.

[0070] The mobile control terminal provided in this embodiment is equipped with the miniaturized ultra-wideband antenna provided in Embodiment 1 or Embodiment 2. The ultra-wideband, omnidirectional and high-gain antenna performance and miniaturization characteristics of the mobile control terminal can significantly improve the wireless communication performance of the mobile control terminal.

[0071] In particular, when the mobile control terminal of this embodiment is a game controller, the miniaturized ultra-wideband antenna provided in Example 1 or Example 2, based on its miniaturized characteristics, will be better suited for miniaturized game controllers; at the same time, based on its ultra-wideband characteristics, it will be able to significantly improve its positioning performance in the game, achieve accurate positioning in the game, and thus optimize the gaming experience.

[0072] The structure of the game controller will be described in detail below with reference to a specific example.

[0073] A game controller comprises a shell, an electric control component, a battery and the miniaturized ultra-wideband antenna provided in the first or second embodiment; the electric control component, the battery and the miniaturized ultra-wideband antenna are arranged in the shell.

[0074] The shell is provided with a grip portion and has a panel and a bottom shell; the panel and the bottom shell can be enclosed to form a hollow structure, the panel is covered on the bottom shell, and a key assembly is provided on the panel, and the key assembly is provided with a key, a trigger, a universal wheel, etc., to realize different operating functions. The key assembly is a touch key located on the handle panel, and the key can be made of rubber or plastic; the key can be pressed by the index finger or middle finger of the user. When the touch key is pressed by the user, the electric control component will receive the user trigger instruction, and the electric control component will form a corresponding control instruction based on the received user trigger instruction and transmit it to the host wirelessly through the antenna, so that the user can control different game characters or complete different game operations when playing the game. A wireless communication module is provided in the electric control component, and the wireless communication module can be a Wi-Fi module, a 5G communication module, etc. The wireless communication module is directly connected to the antenna structure, so as to transmit and receive data through the antenna. The type and number of antennas are different depending on the wireless communication module.

[0075] In summary, the miniaturized ultra-wideband antenna and mobile control terminal provided by the present utility model can achieve the compatibility of antenna miniaturization and ultra-wideband, so as to better adapt to miniaturized terminals. At the same time, it can also improve the antenna performance of the small mobile control terminal equipped with this antenna, especially the performance of precise positioning, thereby optimizing the operation experience.

[0076] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present utility model.

Claims

1. A miniaturized ultra-wideband antenna, characterized in that: It comprises a radiation layer, a dielectric layer and a defective stratum which are stacked in sequence; the radiation layer comprises a microstrip feeder and a rectangular radiation plate; the rectangular radiation plate is connected to one end of the microstrip feeder; a pair of axially symmetrical strip gaps are provided on the rectangular radiation plate; an L-shaped gap is provided at the edge of the defective stratum, the horizontal branch of the L-shaped gap corresponds to the rectangular radiation plate, and the vertical branch of the L-shaped gap is parallel to the microstrip feeder; the vertical branch and the strip gap are respectively located on both sides of the microstrip feeder.

2. The miniaturized ultra-wideband antenna according to claim 1, characterized in that: The pair of axisymmetrically distributed strip-shaped slots include a first strip-shaped slot and a second strip-shaped slot; one end of the first strip-shaped slot and the second strip-shaped slot is connected to the edge of the rectangular radiation sheet.

3. The miniaturized ultra-wideband antenna according to claim 2, characterized in that: The first strip-shaped slot and the second strip-shaped slot are parallel to the microstrip feed line.

4. The miniaturized ultra-wideband antenna according to claim 2, characterized in that: The first strip-shaped gap and the second strip-shaped gap are arranged at positions close to the edge of the rectangular radiation sheet.

5. The miniaturized ultra-wideband antenna according to claim 2, characterized in that: The length of the first strip-shaped gap and the second strip-shaped gap ranges from 1.5 to 2.5 mm, and the width ranges from 0.4 to 0.8 mm.

6. The miniaturized ultra-wideband antenna according to claim 3, characterized in that: The distance between the pair of strip-shaped gaps and the microstrip feed line ranges from 2.6 to 3.2 mm.

7. The miniaturized ultra-wideband antenna according to claim 1, characterized in that: The length of the dielectric layer is in the range of 21-23 mm, and the width is in the range of 19-22 mm; the length of the rectangular radiation sheet is in the range of 6-8 mm, and the width is in the range of 7-9 mm; the length of the microstrip feed line is in the range of 7-9 mm, and the width is in the range of 1.5-1.6 mm; In the length direction of the dielectric layer, the distance between the edge of the rectangular radiation sheet away from the microstrip feed line and the corresponding edge of the dielectric layer is in the range of 6-8 mm; In the width direction of the dielectric layer, the distance between the edge of the rectangular radiation sheet away from the strip-shaped gap and the corresponding edge of the dielectric layer is in the range of 6-8 mm.

8. The miniaturized ultra-wideband antenna according to claim 1, characterized in that: The width of the horizontal branch of the L-shaped gap ranges from 6.0 to 8.0 mm, and the length ranges from 5.0 to 6.0 mm; the width of the vertical branch of the L-shaped gap ranges from 4.5 to 6.5 mm, and the length ranges from 12 to 16 mm.

9. A mobile control terminal, characterized in that: The miniaturized ultra-wideband antenna comprises any one of claims 1 to 8.

10. The mobile control terminal according to claim 9, characterized in that: It is a game controller or a remote control.

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