Ultra-wideband antenna and control terminal

Abstract

The application discloses an ultra-wideband antenna and a control terminal. The ultra-wideband antenna comprises a dielectric substrate, the dielectric substrate having a first side surface and a second side surface arranged oppositely; an antenna interface arranged at one side edge of the dielectric substrate; an antenna radiator arranged at the first side surface of the dielectric substrate, the antenna radiator being electrically connected with the antenna interface, and the antenna radiator being provided with a cut corner at one side close to the antenna interface; and a grounding sheet arranged at the second side surface of the dielectric substrate, the grounding sheet being provided with a g-shaped groove close to the antenna interface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antennas, in particular to an ultra-wideband antenna and a control terminal. BACKGROUND

[0002] At present, with the diversification of the functions of intelligent mobile terminals, the game functions on the intelligent mobile terminals are increasingly powerful, but the intelligent mobile terminals usually control games directly on their touch screens through touch control. For players, it is difficult to obtain the best game experience by controlling games on the touch screens. Therefore, various game handles gradually appear in the market, which give players the best game experience. In the game handle, the antenna structure usually includes a dielectric substrate, a feed patch and a ground patch arranged on the dielectric substrate, a coaxial feed line connected with the feed patch, and the like; wherein the feed patch is used to generate a working frequency band covering a certain bandwidth together with the ground patch under the excitation of the feed of the coaxial feed line. However, the volume of the game handle is usually small, so that the antenna of the game handle is limited by its physical characteristics, the radiation frequency band is narrow, and there is a problem of poor positioning performance. SUMMARY

[0003] The main purpose of the present application is to provide an ultra-wideband antenna and a control terminal, aiming at providing an ultra-wideband antenna suitable for a game handle, so as to improve the positioning accuracy in games and optimize the game experience.

[0004] To achieve the above-mentioned purpose, the present application provides an ultra-wideband antenna, which comprises:

[0005] a dielectric substrate, the dielectric substrate having a first side surface and a second side surface arranged oppositely;

[0006] an antenna interface arranged on one side edge of the dielectric substrate;

[0007] an antenna radiator arranged on the first side surface of the dielectric substrate, the antenna radiator being electrically connected with the antenna interface, and the antenna radiator being provided with a cut angle on one side away from the antenna interface;

[0008] a ground sheet arranged on the second side surface of the dielectric substrate, the ground sheet being provided with a U-shaped groove away from the antenna interface.

[0009] Optionally, the cut angle is an arc-shaped cut angle.

[0010] Optionally, the cut angle is a right-angle cut angle.

[0011] Optionally, the side edge of the antenna radiator on one side away from the antenna interface is a right-angle edge.

[0012] Optionally, the projection of the antenna radiator on the dielectric substrate is arranged spaced apart from the ground sheet.

[0013] Optionally, the H-shaped groove comprises a first horizontal groove, a second horizontal groove and a first vertical groove connecting the first horizontal groove and the second horizontal groove; wherein,

[0014] The first horizontal groove is arranged at a side of the grounding sheet away from the antenna interface.

[0015] Optionally, the length of the first horizontal groove along the side away from the antenna interface corresponds to the width of the antenna radiator.

[0016] Optionally, the ultra-wideband antenna further comprises:

[0017] a microstrip line, one end of the microstrip line being connected with the antenna radiator, and the other end of the microstrip line being connected with the antenna interface;

[0018] The microstrip line is located at the position of the first vertical groove.

[0019] The application further provides a control terminal comprising the ultra-wideband antenna.

[0020] The application provides an ultra-wideband antenna. The ultra-wideband antenna comprises a dielectric substrate, an antenna radiator and a grounding sheet. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative labor.

[0022] Figure 1 is a top view of an embodiment of the ultra-wideband antenna of the present application;

[0023] Figure 2 is a bottom view of an embodiment of the ultra-wideband antenna of the present application;

[0024] Figure 3 is Figure 1 and Figure 2 the size parameters of the ultra-wideband antenna in the embodiments of the present application;

[0025] Figure 4 S parameter comparison of different antenna structure antennas;

[0026] Figure 5 Antenna resonance curve of the ultra-wideband antenna of the present application;

[0027] Figure 6 Radiation pattern of the ultra-wideband antenna of the present application.

[0028] BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Reference Name Reference Name 100 Dielectric substrate 100a First horizontal slot 200 Antenna radiator 100b Second horizontal slot 300 Ground patch 100c First vertical slot 400 Microstrip line CN1 Antenna interface

[0030] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0032] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0033] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0034] The term “and / or” in this paper only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character “ / ” in this paper generally represents that the front and rear associated objects are in an “or” relationship.

[0035] The application provides an ultra-wideband antenna applied to a control terminal, which can be a gamepad or a remote controller with a gamepad function.

[0036] In the past game experience, a keyboard is mostly used for operation. Different operation keys are used to control games due to different settings of the games, which greatly reduces the game experience. Research shows that operation with a gamepad is more rapid and simple than operation with a keyboard. In the use process, users can more easily remember and operate the gamepad than the keyboard, and the operation of different games is almost the same. Based on the above, the application designs an ultra-wideband antenna structure for positioning in a gamepad. The working frequency band of the ultra-wideband antenna is greater than 500 MHz, which can play a role in accurate positioning in the game and improve the game experience.

[0037] With reference to Figure 1 and Figure 2 In an embodiment of the application, the ultra-wideband antenna comprises:

[0038] A dielectric substrate 100, which has a first side surface and a second side surface arranged oppositely;

[0039] An antenna interface CN1 arranged on one side of the dielectric substrate 100;

[0040] An antenna radiator 200 arranged on the first side surface of the dielectric substrate 100, which is electrically connected with the antenna interface CN1, and which is provided with a cut corner on the side close to the antenna interface CN1;

[0041] A grounding sheet 300 arranged on the second side surface of the dielectric substrate 100, which is provided with a U-shaped groove close to the antenna interface CN1.

[0042] In this embodiment, the dielectric substrate 100 can be made of FR4 epoxy resin material, wherein the thickness, size and shape of the dielectric substrate 100 can be set according to the actual application product and application environment, etc. to meet different application requirements. The shape of the dielectric substrate 100 can be square, such as rectangular or square, for example, the size is 24mmx20mmx0.45mm, and the shape of the dielectric substrate 100 can also be circular. The antenna body 200 can be fixed on the dielectric substrate 100 in the form of a patch, for example, the formed antenna radiator 200 is attached to the dielectric substrate 100, or is press-fit to the dielectric substrate 100 through other processes. It can also be a plated layer etched on the first side surface of the dielectric substrate 100, for example, the antenna radiator 200 can be formed on the dielectric substrate 100 by a printed circuit wiring process, specifically, the copper-clad and etched method can be used to form the wiring board of the antenna radiator 200 on the dielectric substrate 100. The antenna radiator 200 can be made of copper foil, or other metal materials or non-metal conductive materials. The antenna radiator 200 can be made of copper, aluminum and other metal materials. The overall external contour of the antenna radiator 200 can be square or polygonal.

[0043] Optionally, the cut angle is an arc-shaped cut angle, or the cut angle is a right-angle cut angle. The side of the antenna radiator 200 away from the antenna interface CN1 is a right-angle side.

[0044] In actual application, the rectangular radiation patch can be cut at an angle by etching process, cutting process, stamping process, etc. Specifically, the two right angles of the rectangular radiation patch on the same side can be cut at an angle to form an arc-shaped cut angle, such as a circular cut angle, or a right-angle cut angle. The rectangular radiation patch changes from a right angle to a circular cut angle or a right-angle cut angle. Since the circular cut angle changes the current path of the radiation patch, it also affects the current on the back of the antenna, resulting in a change in S11, which moves the 4GHz resonance S11 curve upward. Figure 1 As shown in the figure, the S parameter of the antenna after the arc-shaped cut angle processing of the rectangular radiation patch is shown in Figure 4 It can be seen that the S11 at 8-11GHz is moved from-2.5dB to about-10dB.

[0045] The grounding patch 300 and the antenna radiating body 200 are respectively disposed on opposite sides of the dielectric substrate 100. The grounding patch 300 can be disposed on the dielectric substrate 100 in the form of a patch, or it can be a plating layer formed by photolithography, for example, by printed circuit wiring processes. Specifically, the shape of the grounding patch 300 can be formed on the dielectric substrate 100 by copper plating and etching. Alternatively, the circuit traces of the formed grounding patch 300 can be attached to the dielectric substrate 100, or it can be laminated to the dielectric substrate 100 by other processes. The grounding patch 300 can be made of copper foil, or it can be made of other metallic or non-metallic conductive materials. In this embodiment, the grounding plate 300 is further provided with an I-shaped slot, which is located near the antenna interface CN1, with the slot opening facing the antenna radiator 200 and its position corresponding to the antenna radiator 200. The I-shaped slot is used to increase the current surface path and improve the impedance matching of the antenna. Simultaneously, etching the I-shaped slot on the plane of the grounding plate 300 expands the antenna bandwidth. Due to the effect of the I-shaped slot, the distance between the grounding plate 300 and the radiating patch increases, resulting in a smaller current influence between them. Consequently, the S11 curve in the 5-7 GHz frequency band shifts from below -10 dB to near -10 dB.

[0046] like Figure 4 As shown, Figure 4 For the comparison of S-parameters of antennas with different structures, ANT0 represents the simulation results of the antenna S-parameters of this invention. ANT1 represents the initial structure antenna with a rectangular radiator 200 (without chamfering, and the grounding patch 300 is also without slotting), at which point the antenna bandwidth ranges from 4.75 to 6.94 GHz. ANT2 represents antenna radiator 200 with only an arc-shaped chamfer added (grounding patch 300 is not slotted), and ANT3 represents grounding patch 300 with only an I-shaped slot added (without chamfering), neither of which improves the S-parameters. ANT2-ANT0 represent ANT2 with slotting added to the grounding patch 300 (antenna radiator 200 and grounding patch 300 are both chamfered). It can be seen that under the influence of the rounded chamfer and the I-shaped slot, the current paths on the ground and radiating patch become longer. ANT0 generates three resonances in the 2-12 GHz range, and the S11 curves are all below -10 dB. In summary, when the antenna structure contains both arc-shaped chamfers and I-shaped slots, the antenna S-parameters range from 3.94 to 9.41 GHz. For example... Figure 5 As shown, Figure 5 This is a schematic diagram of the antenna resonance curve. The antenna bandwidth is 3.94-9.41 GHz, and three resonances are generated within this bandwidth range, at 4.55 GHz, 7.16 GHz, and 8.88 GHz. Figure 6 As shown, Figure 6The antenna E-plane and H-plane patterns are shown in Figure 6, and the maximum gain of the antenna is 4.45 dB.

[0047] The ultra-wideband antenna of the present application is provided with a dielectric substrate 100, and an antenna radiator 200 and a ground patch 300 are arranged on the first and second side surfaces opposite to each other. In the present application, the antenna radiator 200 is provided with a cut corner on the side close to the antenna interface CN1, and the ground patch 300 is provided with an I-shaped groove at the antenna interface CN1. By increasing the I-shaped groove and the circular cut corner, the frequency band width of the ultra-wideband antenna can be expanded, the overall thickness of the ultra-wideband antenna can be further reduced, and the manufacturing process can be simplified. When the ultra-wideband antenna of the present application is applied to a gamepad, it can be accurately positioned in the game, thereby optimizing the game experience.

[0048] Referring to Figure 1 and Figure 2 In an embodiment, the antenna radiator 200 is arranged apart from the ground patch 300 in projection on the dielectric substrate 100.

[0049] Optionally, the I-shaped groove comprises a first horizontal groove 100a, a second horizontal groove 100b, and a first vertical groove 100c connecting the first horizontal groove 100a and the second horizontal groove 100b.

[0050] The first horizontal groove 100a is arranged on the side of the ground patch 300 away from the antenna interface CN1.

[0051] The length of the first horizontal groove 100a along the side away from the antenna interface CN1 corresponds to the width of the antenna radiator 200.

[0052] In the present embodiment, the first horizontal groove 100a is arranged on the side of the ground patch 300, and the length of the side corresponds to the width of the antenna radiator 200. The arrangement of the first horizontal groove 100a increases the distance between the ground patch 300 and the radiating patch, so that the current influence between the ground patch 300 and the radiating patch can be reduced without increasing the size of the dielectric substrate 100. The first vertical groove 100c and the second horizontal groove 100b are used to increase the current surface path, so that the impedance matching of the antenna can be improved. By arranging the first horizontal groove 100a, the second horizontal groove 100b, and the first vertical groove 100c connecting the first horizontal groove 100a and the second horizontal groove 100b, the bandwidth of the antenna can be expanded.

[0053] Referring to Figure 1 and Figure 2 In an embodiment, the ultra-wideband antenna further comprises:

[0054] A microstrip line 400, one end of which is connected to the antenna radiator 200, and the other end of which is connected to the antenna interface CN1.

[0055] The microstrip line 400 is located at the position of the first vertical slot 100c.

[0056] In the embodiment, the end of the microstrip line 400 is the position of the antenna feed point, which can be connected with the antenna interface CN1. It is easily understood by those skilled in the art that the microstrip line 400 can be connected with the ground patch through a microwave high-frequency connector, such as a commonly used SMA (Small A Type) connector. The microstrip line 400 is printed on the dielectric substrate and used to connect the antenna radiator 200 and the radio frequency circuit. The microstrip line 400 can be a metal thin film with good electrical conductivity. In combination with the above embodiments, reference is made to Figure 3 and Table 1 below, the size parameters of the antenna of the present application can be specifically as follows:

[0057] Table 1

[0058] Parameter Wsub Lsub Wpatch Lpatch R Wfeed Lfeed Dimension 20 mm 24 mm 15 mm 14 mm 6 mm 2 mm 7 mm Parameter Hsub Lslot1 Lslot2 Lslot3 Wslot2 Lgnd Dimension 0.45 mm 14 mm 3 mm 6 mm 2 mm 6.5 mm

[0059] In the formula, Wsub is the width of the dielectric substrate 100, Lsub is the length of the dielectric substrate 100, hsub is the thickness of the dielectric substrate 100. Wpatch is the edge length of the antenna radiator 200 away from the antenna interface CN1, Wfeed is the width of the microstrip line 400 connecting the antenna radiators 200, and Lfeed is the length of the microstrip line 400. Lgnd is the length of the ground patch 300, Lslot1-Lslot3 and Wslot2 are the size and parameters of the I-shaped slot, and R is the radius of the circular arc-shaped corner.

[0060] The I-shaped slot and the microstrip line 400 arranged on the first side surface of the dielectric substrate 100 at least partially overlap, that is, the orthographic projection of the first vertical slot 100c of the I-shaped slot and the orthographic projection of the microstrip line 400 partially overlap. Further, the orthographic projection of the microstrip line 400 passes through the first vertical slot 100c at the edge of the first vertical slot 100c, the distance between the ground patch 300 and the microstrip line 400 connecting the radiating patch is increased, the current influence between the ground patch 300 and the radiating patch is reduced, and the S11 curve is moved from below -10 dB to close to -10 dB in the 5-7 GHz frequency band. When the planar ultra-wideband antenna is working, the microstrip line 400 is connected with an external excitation, that is, a feed source. After the feed current is connected to the feed source through the microstrip line 400, the radio frequency energy can be transmitted to the antenna radiator 200 through the microstrip line 400, and then emitted by the antenna radiator 200. Alternatively, the antenna radiator 200 receives the radio frequency energy transmitted from the outside, and then transmits the radio frequency energy to the device inside the planar ultra-wideband antenna application for processing.

[0061] The present application also provides a control terminal comprising the ultra-wideband antenna as described above.

[0062] The detailed structure of the ultra-wideband antenna can refer to the above-mentioned embodiments, which will not be repeated here. It can be understood that, since the above-mentioned planar ultra-wideband antenna is used in the control terminal of the present application, the embodiments of the control terminal of the present application include all the technical solutions of all the embodiments of the above-mentioned planar ultra-wideband antenna, and the technical effects achieved are also completely the same, which will not be repeated here.

[0063] The control terminal can be a gamepad, a remote controller with gamepad function, etc. The control terminal can also be provided with an electric control assembly arranged in the control terminal, and the electric control assembly is electrically connected with the planar ultra-wideband antenna. The electric control assembly includes an electric control board, a battery, etc. The gamepad can be provided with a shell, and the shell can be provided with a holding part for a user to hold. The shell has a panel and a bottom shell, and the panel and the bottom shell can be enclosed to form a hollow structure. A cover is covered on the bottom shell, and the panel can be provided with a key assembly, which can be provided with keys, triggers, universal wheels, etc. to realize different operation functions. The keys can be touch keys, and the trigger keys are located on the handle panel and can be pressed by the index finger or middle finger of the user's hand. The trigger keys can be made of rubber or plastic. When the trigger keys are pressed by the user, the electric control assembly can receive the user's trigger instruction, and after receiving the user's trigger instruction, the electric control assembly can transmit the control instruction formed by the user operating the key assembly to the host computer through the antenna, so that the user can control different game characters or complete different game operations when playing games. The electric control assembly is provided with a wireless communication module, which can be a WIFI, 5G communication module, GPS, Bluetooth communication module, etc. The wireless communication module is electrically connected with the antenna structure, so as to receive and return data through the antenna structure. The antenna structure is different in type and quantity according to the different wireless communication modules, for example, when the WIFI module is arranged in the control terminal, the antenna structure includes a WIFI antenna capable of realizing WIFI communication, and when the Bluetooth communication module is arranged, the antenna structure includes a Bluetooth antenna capable of realizing Bluetooth communication, etc.

[0064] The above-mentioned only for the optional embodiments of the present application, not therefore limit the patent range of the present application, all in the patent protection range of the present application is included in the equivalent structure transformation made by using the present application specification and the contents of the drawings, or directly / indirectly applied in other related technical fields under the inventive concept of the present application.

Claims

1. An ultra-wideband antenna, characterized by, The ultra-wideband antenna comprises: a dielectric substrate having a first side surface and a second side surface arranged oppositely; an antenna interface arranged at one side of the dielectric substrate; an antenna radiator arranged at the first side surface of the dielectric substrate, the antenna radiator being electrically connected with the antenna interface, and the antenna radiator being provided with a cut corner at a side close to the antenna interface; a ground sheet arranged at the second side surface of the dielectric substrate, the ground sheet being provided with a W-shaped slot at a side close to the antenna interface, the W-shaped slot comprising a first horizontal slot, a second horizontal slot and a first vertical slot connecting the first horizontal slot and the second horizontal slot, the first horizontal slot being arranged at a side of the ground sheet away from the antenna interface, the length of the first horizontal slot along the side away from the antenna interface corresponding to the width of the antenna radiator, the difference between the length of the first horizontal slot along the side away from the antenna interface and the width of the antenna radiator being 1mm, one end of the first vertical slot being located in the first horizontal slot, and the other end of the first vertical slot being located in the second horizontal slot; the cut corner and the W-shaped slot are used together to improve the S parameter of the ultra-wideband antenna; a microstrip line is further included, and the orthographic projection of the W-shaped slot and the orthographic projection of the microstrip line at least partially overlap.

2. The ultra-wideband antenna of Claim 1, wherein, The cut corner is an arc-shaped cut corner.

3. The ultra-wideband antenna of Claim 1, wherein, The cut corner is a right-angle cut corner.

4. The ultra-wideband antenna of either Claim 2 or Claim 3, wherein, The side of the antenna radiator away from the antenna interface is a right-angle side.

5. The ultra-wideband antenna of any of claims 1 to 3, wherein, The projection of the antenna radiator on the dielectric substrate is arranged apart from the ground sheet.

6. The ultra-wideband antenna of Claim 1, wherein, One end of the microstrip line is connected with the antenna radiator, and the other end of the microstrip line is connected with the antenna interface. The position of the microstrip line corresponds to the position of the first vertical slot.

7. A control terminal, characterized by comprising: The ultra-wideband antenna as claimed in any one of claims 1-6 is included.

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