Dipole antenna and wireless communication equipment
By introducing a Barron structure into dipole antennas, the problems of insufficient anti-interference and complex design of traditional dipole antennas are solved, and higher anti-interference and adaptability are achieved, and design and manufacturing are simplified, suitable for small-scale chemical equipment.
Patent Information
- Application Number
- CN202421125410.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Traditional dipole antennas have weak anti-interference, are susceptible to complex environments, and are complex in design and manufacturing, which leads to high difficulty in use and high maintenance costs, making them difficult to apply in miniaturized equipment.
A dipole antenna is designed including a dielectric substrate and a signal radiation body, which consists of a connected first radiation arm, a barron portion and a second radiation arm, and the barron portion is passed through a first microstrip and a second The microstrip forms a barron gap, increasing bandwidth and tuning impedance, enabling impedance matching between the signal source and the load.
It improves the anti-interference and adaptability of dipole antennas, reduces the impact of complex environments on the antenna, simplifies the tuning process, reduces the difficulty of use and maintenance costs, and is suitable for miniaturized equipment and has higher practical value.
Smart Images
Figure CN222355430U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wireless communication equipment manufacturing, and in particular relates to a dipole antenna and wireless communication equipment. Background Art
[0002] In the field of wireless communication technology, antennas are key devices for achieving electromagnetic wave radiation and reception, and their performance directly affects the quality of the communication system. Among them, dipole antennas are a common type of antennas and are widely used in wireless local area network (WLAN) systems.
[0003] In existing wireless communication systems, dipole antennas have become a common antenna design method due to their advantages such as easy integration. However, traditional dipole antennas also have problems such as weak anti-interference and susceptibility to complex environmental influences (such as multipath effects, signal interference, etc.), poor performance and reliability, and high difficulty in use and maintenance costs due to tuning difficulties. Existing solutions often require complex design and manufacturing processes, which increases the cost and size of the antenna and is not conducive to its application in miniaturized devices. Utility Model Content
[0004] The purpose of the utility model is to overcome at least one of the above-mentioned deficiencies of the prior art, and to provide a dipole antenna and a wireless communication device, which have strong anti-interference performance, are easy to tune, and are simple to design and manufacture.
[0005] The technical solution of the utility model is: a dipole antenna, comprising a dielectric substrate and a signal radiating body arranged on the dielectric substrate, the signal radiating body comprising a first radiating arm, a balun part and a second radiating arm connected to each other, one end of the balun part is connected to the first radiating arm, the other end of the balun part is connected to the second radiating arm, the balun part comprises a first microstrip, a connecting strip and a second microstrip, the two ends of the connecting strip are respectively bent and connected to one end of the first microstrip and one end of the second microstrip, the first microstrip and the second microstrip are arranged in a row and the gap between the first microstrip and the second microstrip forms a balun gap; the first radiating arm is bent and connected to the upper side of the other end of the first microstrip, and the second radiating arm is bent and connected to the lower side of the other end of the second microstrip.
[0006] As a further improvement of the technical solution, a feeding pad is extended from the signal radiating body at the bent connection between the second radiating arm and the second microstrip.
[0007] As a further improvement of the technical solution, a ground pad is provided at the bent connection between the first radiation arm and the first microstrip.
[0008] As a further improvement of the technical solution, the first radiation arm is vertically connected to the first microstrip; the second radiation arm is vertically connected to the second microstrip.
[0009] As a further improvement of the technical solution, the cross-sectional shapes of the first microstrip, the connecting strip and the second microstrip are rectangular.
[0010] As a further improvement of the present technical solution, the first radiating arm includes a first portion and a second portion connected to each other, the first portion is bent and connected to the balun portion, and the second portion protrudes from the first portion; the cross-sectional shape of the first portion and the second portion is trapezoidal; the second radiating arm includes a third portion and a fourth portion connected to each other, the third portion is connected to the balun portion, the fourth portion protrudes from the third portion, and the cross-sectional shape of the third portion and the fourth portion is trapezoidal.
[0011] As a further improvement of the present technical solution, the width of the balun gap ranges from 0.3 mm to 0.8 mm; the width of the first microstrip ranges from 1.5 mm to 3.5 mm; and the width of the second microstrip ranges from 0.5 mm to 2.5 mm.
[0012] As a further improvement of the present technical solution, the length range of the first radiation arm is 7.0 mm to 10.0 mm, and the width range of the first radiation arm is 2.0 mm to 5.0 mm; the length range of the second radiation arm is 6.0 to 10.0 mm, and the width range of the second radiation arm is 2.0 mm to 5.0 mm.
[0013] As a further improvement of the technical solution, a pad gap is formed between the feeding pad and the grounding pad, and the pad gap width ranges from 0.5 mm to 2.0 mm.
[0014] The utility model also provides a wireless communication device, comprising any one of the above-mentioned dipole antennas.
[0015] The utility model provides a dipole antenna and a wireless communication device. The dipole antenna comprises a dielectric substrate and a signal radiating body arranged on the dielectric substrate. The signal radiating body comprises a first radiating arm, a balun part and a second radiating arm connected to each other. One end of the balun part is connected to the first radiating arm, and the other end of the balun part is connected to the second radiating arm. The balun part comprises a first microstrip, a connecting strip and a second microstrip. The two ends of the connecting strip are respectively bent and connected to one end of the first microstrip and one end of the second microstrip. The first microstrip and the second microstrip are arranged in a row and the gap between the first microstrip and the second microstrip forms a balun gap. The first radiating arm is bent and connected to the upper side of the other end of the first microstrip, and the second radiating arm is bent and connected to the lower side of the other end of the second microstrip. The utility model adds a balun structure. Since the balun structure can increase the bandwidth and tune the impedance, signals of different impedances can be converted to each other to achieve impedance matching between the signal source and the load, thereby improving the signal transmission efficiency. This not only improves the anti-interference ability of the dipole antenna, but also makes it more adaptable, and can effectively reduce the impact of complex environments on the antenna, thereby ensuring the stability and reliability of the communication system, but also makes tuning easier, which will greatly reduce the difficulty of using and the maintenance cost of the dipole antenna, and improve the efficiency of the equipment. Moreover, the dipole antenna of the utility model has a simple structure. Compared with the prior art which requires complex design and manufacturing processes, the antenna design and manufacturing of the present solution is simpler, with smaller cost and volume, which is more conducive to its application in miniaturized equipment and has higher practical value. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a schematic diagram of the dipole antenna provided by the utility model;
[0018] Figure 2 It is a simplified diagram of the dimensions of the dipole antenna provided by the utility model;
[0019] Figure 3 It is a standing wave diagram of the dipole antenna provided by the utility model;
[0020] Figure 4 It is the vertical 3D radiation pattern of the dipole antenna provided by the utility model;
[0021] Figure 5 It is the horizontal vertical 3D radiation pattern of the dipole antenna provided by the utility model;
[0022] Figure 6 It is the horizontal plane 2D radiation pattern of the dipole antenna provided by the utility model;
[0023] Figure 7 It is a current distribution diagram of the dipole antenna provided by the utility model when a high-frequency current signal is fed into it. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0025] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.
[0026] In addition, if there are terms such as "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientation or positional relationship in the embodiments of the present invention, they are based on the orientation or positional relationship or the conventional placement state or use state shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0027] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present utility model will not be described separately.
[0028] The utility model provides a dipole antenna, see Figure 1The dipole antenna 100 includes a dielectric substrate 20 and a signal radiating body 10 arranged on the dielectric substrate 20, the signal radiating body 10 includes a first radiating arm 101, a balun portion 102 and a second radiating arm 103 connected to each other, one end of the balun portion 102 is connected to the first radiating arm 101, and the other end of the balun portion 102 is connected to the second radiating arm 103. The balun portion 102 includes a first microstrip 1021, a connecting strip 1022 and a second microstrip 1023, the two ends of the connecting strip 1022 are bent and connected to one end of the first microstrip 1021 and one end of the second microstrip 1023 respectively (that is, one end of the connecting strip 1022 is bent and connected to one end of the first microstrip 1021, and the other end of the connecting strip 1022 is bent and connected to one end of the second microstrip 1023), the first microstrip 1021 and the second microstrip 1023 are arranged in rows (parallel and spaced apart from top to bottom), and the gap between the first microstrip 1021 and the second microstrip 1023 forms a balun gap 1024; for ease of description, in this embodiment, the length directions of the first microstrip 1021 and the second microstrip 1023 are defined as transverse, the length direction of the connecting strip 1022 is defined as longitudinal, and the first microstrip 1021 is located above the longitudinal direction of the second microstrip 1023. The first radiation arm 101 is bent and connected to the upper side of the other end of the first microstrip 1021, and the second radiation arm 103 is bent and connected to the lower side of the other end of the second microstrip 1023. The utility model adds a balun structure. Since the balun structure can play a role in increasing bandwidth and tuning impedance, signals of different impedances can be converted to each other to achieve impedance matching between the signal source and the load, and improve signal transmission efficiency. This not only improves the anti-interference ability of the dipole antenna 100, but also makes it more adaptable, and can effectively reduce the impact of complex environments on the antenna, ensure the stability and reliability of the communication system, and make tuning easier, which will greatly reduce the difficulty of using the dipole antenna 100 and the maintenance cost, and improve the use efficiency of the equipment; and the dipole antenna 100 of the utility model has a simple structure. Compared with the prior art that requires complex design and manufacturing processes, the antenna design and manufacturing of the utility model is simpler, the cost and volume are smaller, and it is more conducive to its application in miniaturized equipment, and has higher practical value.
[0029] It can be understood that the utility model, through reasonable structural design, makes the performance parameters such as the antenna impedance characteristics, antenna gain, standing wave ratio, 3dB lobe width meet the requirements, thereby obtaining a high-gain radiation body with low cost, high communication efficiency and easy debugging. Even if the dipole antenna 100 provided by the utility model is placed in a complex environment with small clearance (that is, the pollution level and air quality in the environment are poor), the antenna can be tuned by adjusting the balun structure, thereby effectively improving the antenna's anti-interference ability and making it more adaptable.
[0030] For the signal radiating body 10, preferably, the signal radiating body 10 can be made of metal thin materials such as copper foil.
[0031] Optionally, the signal radiating body 10 may be provided with a feeding pad 104 extending from the bending connection between the second radiating arm 103 and the second microstrip 1023 (the second microstrip 1023 extends upward from one end away from the connecting strip 1022 to form a feeding pad 104). During manufacturing, the wire core may be welded to the feeding pad 104 for feeding. During use, a high-frequency current signal may be fed from a transmitter to the feeding pad 104 through a coaxial cable. There is a gap between the feeding pad 104 and the end of the first microstrip 1021, and the length of the first microstrip 1021 may be shorter than the length of the second microstrip 1023.
[0032] Optionally, a ground pad 105 may be provided at the bent connection between the first radiation arm 101 and the first microstrip 1021 , and a shielding net may be welded to the ground pad 105 during manufacturing to achieve grounding.
[0033] For the Balun section 102, please combine Figure 1 and Figure 2 Optionally, the width W1 of the balun gap 1024 ranges from 0.3 mm to 0.8 mm; the width W2 of the first microstrip 1021 ranges from 1.5 mm to 3.5 mm; and the width W3 of the second microstrip 1023 ranges from 0.5 mm to 2.5 mm.
[0034] In a specific application, the length range of the balun portion 102 is 1 / 4 wavelength of the preset frequency band, so as to control the impedance of the antenna and tune it at the desired frequency. For example, the preset frequency band can be the 5G frequency band, and its corresponding frequency range is 5.15GHz to 5.85GHz, and its corresponding wavelength is about 5.821cm to 5.125cm. The length range of the balun portion 102 can be 1.28125cm to 1.45525cm. In addition, the width W1 of the balun gap 1024 can be 0.5mm, the width W2 of the first microstrip 1021 can be 2mm, and the width W3 of the second microstrip 1023 can be 0.75mm, so that the utility model can realize impedance conversion by designing the balun gap 1024, the first microstrip 1021 and the second microstrip 1023 to be of appropriate size, so as to facilitate the conversion of the balanced signal on the transmission line into the unbalanced signal on the antenna, thereby realizing impedance matching between the antenna and the transmission line.
[0035] Optionally, the projection shapes of the first microstrip 1021 , the connecting strip 1022 and the second microstrip 1023 on the dielectric substrate 20 may be rectangular.
[0036] For the first radiation arm 101 and the second radiation arm 103, optionally, the first radiation arm 101 can be vertically connected to the first microstrip 1021, that is, the first radiation arm 101 can be arranged along the length direction of the dielectric substrate 20, and the first microstrip 1021 is arranged along the width direction of the dielectric substrate 20; the second radiation arm 103 can be vertically connected to the second microstrip 1023, that is, the second radiation arm 103 can be arranged along the length direction of the dielectric substrate 20, and the second microstrip 1023 is arranged along the width direction of the dielectric substrate 20, so that the electromagnetic waves radiated by the first radiation arm 101 and the second radiation arm 103 are horizontally polarized waves.
[0037] Optionally, the first radiation arm 101 may include a first portion 1011 and a second portion 1012 connected to each other, the first portion 1011 may be bent and connected to the balun portion 102 and a ground pad 105 may be provided at the bent connection therebetween, and the second portion 1012 may be hook-shaped and protrude from the first portion 1011 in the direction of the connecting band 1022 in the transverse direction.
[0038] Specifically, the projection shape of the first portion 1011 and the second portion 1012 on the dielectric substrate 20 may be a trapezoid. Further, the cross-sectional shape of the first portion 1011 and the second portion 1012 may be a right-angle trapezoid. The width of the first portion 1011 gradually increases along the direction away from the first microstrip 1021 (the first portion 1011 along the upward direction), the right-angled side of the first portion 1011 is relatively close to the connecting strip 1022, and the hypotenuse of the first portion 1011 is relatively far away from the connecting strip 1022. The width of the second portion 1012 gradually decreases along the direction away from the first microstrip 1021 (the second portion 1012 along the upward direction), the hypotenuse of one end of the second portion 1012 is connected to the hypotenuse of the first portion 1011, and the other end of the second portion 1012 is a right-angled side, and the other end protrudes from the right-angled side of the first portion 1011 in the transverse direction.
[0039] Similarly, the second radiation arm 103 may include a third portion 1031 and a fourth portion 1032 connected to each other, one side of the third portion 1031 may be connected to the balun portion 102, and the other side is used to extend to set the feeding pad 104, and the fourth portion 1032 may be hook-shaped and protrude from the third portion 1031 in the direction of the connecting strip 1022 in the transverse direction. Specifically, the cross-sectional shape of the third portion 1031 and the fourth portion 1032 may be trapezoidal.
[0040] Further, the projection shape of the third portion 1031 and the fourth portion 1032 on the dielectric substrate 20 may be a right-angled trapezoid. The width of the third portion 1031 gradually increases along the direction away from the second microstrip 1023 (the third portion 1031 is in the downward direction), the right-angled side of the third portion 1031 is relatively far away from the connecting strip 1022, and the hypotenuse of the third portion 1031 is relatively close to the connecting strip 1022. The width of the fourth portion 1032 gradually decreases along the direction away from the second microstrip 1023 (the fourth portion 1032 is in the downward direction), the hypotenuse of one end of the fourth portion 1032 is connected to the hypotenuse of the third portion 1031, and the other end of the fourth portion 1032 is a right-angled side, and the other end protrudes from the right-angled side of the third portion 1031 in the transverse direction.
[0041] Optionally, the length L1 of the first radiation arm 101 ranges from 7.0 mm to 10.0 mm, and the width W4 of the first radiation arm 101 ranges from 2.0 mm to 5.0 mm; the length L2 of the second radiation arm 103 ranges from 6.0 to 10.0 mm, and the width W5 of the second radiation arm 103 ranges from 2.0 mm to 5.0 mm.
[0042] In a specific application, the length L1 of the first radiation arm 101 may be 9 mm, and the width W4 of the first radiation arm 101 may be 3.55 mm; the length L2 of the second radiation arm 103 may be 9 mm, and the width W5 of the second radiation arm 103 may be 3.55 mm.
[0043] Optionally, a pad gap 106 is formed between the feed pad 104 and the ground pad 105, and a width W6 of the pad gap 106 ranges from 0.5 mm to 2.0 mm. In a specific application, the width W6 of the pad gap 106 may be 0.75 mm.
[0044] As for the dielectric substrate 20 , the dielectric substrate 20 may be made of FR4 material (glass fiber epoxy resin material).
[0045] Optionally, combine Figure 1 and Figure 2 The length L3 of the dielectric substrate 20 can be less than or equal to 15 mm, the width W7 of the dielectric substrate 20 can be less than or equal to 12 mm, and the thickness of the dielectric substrate 20 can be less than or equal to 0.8 mm, thereby satisfying the miniaturized design of the dielectric substrate 20 and facilitating the application of the antenna in miniaturized devices.
[0046] In a specific application, the length L3 of the dielectric substrate 20 may be 12 mm, the width W7 of the dielectric substrate 20 may be 9.8 mm, and the thickness of the dielectric substrate 20 may be 0.8 mm.
[0047] It can be understood that when the dipole antenna 100 is working, the high-frequency current signal of the port can first be fed from the transmitter to the feeding pad 104 through the coaxial cable. The high-frequency current signal is divided into two parts, one part flows to the end along the first radiation arm 101, and the other part flows to the end along the second radiation arm 103. At this time, the high-frequency current signal will pass through the balun part 102, and the balun part 102 can convert the balanced signal on the transmission line (the signals on the two conductors are relatively equal) into an unbalanced signal on the antenna (the signal on one conductor is relatively zero), thereby realizing impedance matching between the antenna and the transmission line. The first radiation arm 101 and the second radiation arm 103 form a pair of radiation units. Driven by the intermediate feeding energy, the charges on the first radiation arm 101 and the second radiation arm 103 can be continuously oscillated back and forth, and finally a closed loop of the electric field and the magnetic field is realized to realize the radiation of electromagnetic waves, and the electromagnetic waves radiated by the first radiation arm 101 and the second radiation arm 103 are horizontally polarized waves.
[0048] See also Figure 3 , Figure 3 This is a standing wave diagram of the dipole antenna 100 provided by the present invention. The diagram shows that the dipole antenna 100 has a small standing wave ratio in the 5.15 to 5.85 GHz passband, good impedance matching, and a relatively wide bandwidth.
[0049] See also Figures 4 to 6 , Figure 4 It is the vertical 3D radiation pattern of the dipole antenna 100 provided by the utility model, Figure 5 It is the horizontal vertical 3D radiation pattern of the dipole antenna 100 provided by the utility model, Figure 6 This is a horizontal plane 2D radiation diagram of the dipole antenna 100 provided by the present invention. In the figure, the field shape of the dipole antenna 100 in the horizontal plane direction is relatively round and the radiation is good.
[0050] See also Figure 7 , Figure 7 It is a current distribution diagram of the dipole antenna 100 provided by the utility model when a high-frequency current signal is fed into the port. As can be seen from the diagram, when the high-frequency current signal at the port is fed into the horizontal microstrip feeder, the radiation unit composed of the first radiation arm 101 and the second radiation arm 103 is excited.
[0051] The utility model also provides a wireless communication device, including the above-mentioned dipole antenna 100. The wireless communication device provided by the utility model has strong anti-interference performance, is easy to tune, and is simple to design and manufacture.
[0052] Optionally, the wireless communication device may be, for example, a mobile phone, a tablet, a computer, a vehicle-mounted terminal, a wearable device, or other terminal device that can utilize an antenna structure to transmit energy or electromagnetic waves.
[0053] Optionally, the wireless communication device can communicate using a 5G communication network.
[0054] The utility model provides a dipole antenna and a wireless communication device. The dipole antenna 100 includes a dielectric substrate 20 and a signal radiating body 10 arranged on the dielectric substrate 20. The signal radiating body 10 includes a first radiating arm 101, a balun portion 102 and a second radiating arm 103 connected to each other. One end of the balun portion 102 is connected to the first radiating arm 101, and the other end of the balun portion 102 is connected to the second radiating arm 103. The balun portion 102 includes a first microstrip 1021, a connecting strip 1022 and a second microstrip 1023, the two ends of the connecting strip 1022 are respectively bent and connected to one end of the first microstrip 1021 and one end of the second microstrip 1023, the first microstrip 1021 and the second microstrip 1023 are arranged in a row and the gap between the first microstrip 1021 and the second microstrip 1023 forms a balun gap 1024; the first radiation arm 101 is bent and connected to the upper side of the other end of the first microstrip 1021, and the second radiation arm 103 is bent and connected to the lower side of the other end of the second microstrip 1023. The utility model adds a balun structure. Since the balun structure can increase the bandwidth and tune the impedance, signals of different impedances can be converted to each other to achieve impedance matching between the signal source and the load, thereby improving the signal transmission efficiency. This not only improves the anti-interference ability of the dipole antenna 100, but also makes it more adaptable, and can effectively reduce the impact of complex environments on the antenna, thereby ensuring the stability and reliability of the communication system, but also makes tuning easier, which will greatly reduce the difficulty of use and maintenance costs of the dipole antenna 100 and improve the use efficiency of the equipment. Moreover, the dipole antenna 100 of the utility model has a simple structure. Compared with the prior art which requires complex design and manufacturing processes, the antenna design and manufacturing of the present solution is simpler, with smaller cost and volume, which is more conducive to its application in miniaturized equipment and has higher practical value.
[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A dipole antenna, characterized in that: The invention comprises a dielectric substrate and a signal radiating body arranged on the dielectric substrate, wherein the signal radiating body comprises a first radiating arm, a balun part and a second radiating arm connected to each other, one end of the balun part is connected to the first radiating arm, and the other end of the balun part is connected to the second radiating arm, the balun part comprises a first microstrip, a connecting strip and a second microstrip, the two ends of the connecting strip are respectively bent and connected to one end of the first microstrip and one end of the second microstrip, the first microstrip and the second microstrip are arranged in a row, and the gap between the first microstrip and the second microstrip forms a balun gap; the first radiating arm is bent and connected to the upper side of the other end of the first microstrip, and the second radiating arm is bent and connected to the lower side of the other end of the second microstrip.
2. The dipole antenna according to claim 1, characterized in that: A feeding pad is extended from the signal radiating body at the bent connection between the second radiating arm and the second microstrip.
3. The dipole antenna according to claim 2, characterized in that: A ground pad is provided at a bent connection between the first radiation arm and the first microstrip.
4. The dipole antenna according to claim 1, characterized in that: The first radiation arm is vertically connected to the first microstrip; The second radiation arm is vertically connected to the second microstrip.
5. The dipole antenna according to claim 1, characterized in that: The cross-sections of the first microstrip, the connecting strip and the second microstrip are rectangular.
6. The dipole antenna according to claim 1, characterized in that: The first radiation arm comprises a first portion and a second portion connected to each other, the first portion is bent and connected to the balun portion, and the second portion protrudes from the first portion; the cross-sectional shapes of the first portion and the second portion are trapezoidal; The second radiation arm includes a third portion and a fourth portion connected to each other, the third portion is connected to the balun portion, the fourth portion protrudes from the third portion, and the cross-sections of the third portion and the fourth portion are trapezoidal.
7. The dipole antenna according to any one of claims 1 to 6, characterized in that: The width of the balun gap ranges from 0.3 mm to 0.8 mm; the width of the first microstrip ranges from 1.5 mm to 3.5 mm; and the width of the second microstrip ranges from 0.5 mm to 2.5 mm.
8. The dipole antenna according to any one of claims 1 to 6, characterized in that: The length of the first radiation arm ranges from 7.0 mm to 10.0 mm, and the width of the first radiation arm ranges from 2.0 mm to 5.0 mm; the length of the second radiation arm ranges from 6.0 mm to 10.0 mm, and the width of the second radiation arm ranges from 2.0 mm to 5.0 mm.
9. The dipole antenna according to claim 3, characterized in that: A pad gap is formed between the feed pad and the ground pad, and the pad gap width ranges from 0.5 mm to 2.0 mm.
10. A wireless communication device, characterized in that: Comprising a dipole antenna as claimed in any one of claims 1 to 9.