Dipole antenna

Abstract

The utility model discloses a dipole antenna. The dipole antenna comprises a dielectric carrier plate, a radiation structure and a coaxial cable, the media carrier plate includes a carrier plate surface. The radiation structure is arranged on the surface of the carrier plate. The radiation structure comprises a first radiation body, a second radiation body and a balun line. The balun line is located between the first radiator and the second radiator. The first radiator comprises a first short section and a first long section. The first short section and the first long section are adjacent to one side of the balun line side by side, and the first long section extends in the direction away from the balun line. The second radiator comprises a second short section and a second long section. The second short section and the second long section are adjacent to the other side of the balun line side by side, and the second long section extends in the direction away from the balun line. The two ends of the balun line are connected between the first short section and the second short section on the two sides respectively. The inner conductor of the coaxial cable is electrically connected to the second radiator. According to the invention, the communication requirements of 2.4 GHz, 5 GHz and 6 GHz frequency bands can be met.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a dipole antenna. Background Art

[0002] The antenna used to transmit and receive radio frequency signals is one of the most important components in a wireless communication device. In order to obtain better communication quality, the wireless communication device usually adopts a dipole antenna with good antenna characteristics and omnidirectional radiation field.

[0003] With the rapid development of wireless radio frequency technology, dipole antennas configured in wireless communication devices need to support multi-frequency uses. Most dipole antennas on the market are dual-band dipole antennas, which only support 2.4GHz (2.4~2.5GHz) and 5GHz (5.15~5.85GHz) frequency bands. However, with the evolution of technology, the application of 6GHz (5.925~7.125GHz) frequency band has been added, but most dipole antenna designs on the market still only support 2.4GHz and 5GHz frequency bands. Therefore, how to provide a dipole antenna that can simultaneously support the 6GHz frequency band is a problem that technical personnel in this field need to solve. Utility Model Content

[0004] The embodiment of the present application provides a dipole antenna to solve the problem that the dipole antennas currently available on the market cannot support 2.4 GHz, 5 GHz and 6 GHz frequency bands at the same time.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, a dipole antenna is provided, which includes a dielectric carrier, a radiating structure and a coaxial cable. The dielectric carrier includes a carrier surface. The radiating structure is arranged on the carrier surface. The radiating structure includes a first radiator, a second radiator and a balun line, the balun line is located between the first radiator and the second radiator, wherein the first radiator includes a first short segment and a first long segment, the first short segment and the first long segment are adjacent to one side of the balun line side by side, and the first long segment extends away from the balun line, the second radiator includes a second short segment and a second long segment, the second short segment and the second long segment are adjacent to the other side of the balun line side by side, and the second long segment extends away from the balun line, the position of the first short segment corresponds to the position of the second long segment, the position between the first long segments corresponds to the position of the second short segment, and the two ends of the balun line are respectively connected between the first short segment and the second short segment or between the first long segment and the second long segment on both sides. The coaxial cable includes an inner conductor and an outer conductor, wherein the outer conductor is located outside the inner conductor, the inner conductor is electrically connected to the second radiator, and the outer conductor is electrically connected to the first radiator.

[0007] In one embodiment, the dielectric carrier has a first side, a second side, a third side and a fourth side, the two long sides of the radiating structure are the first side and the second side respectively, one end side adjacent to the first radiator is the third side, one end side adjacent to the second radiator is the fourth side, the first short section is adjacent to the first side, the first long section is adjacent to the second side, the second long section is adjacent to the first side, and the second short section is adjacent to the second side.

[0008] In one embodiment, the outer edge of the first short section is arranged along the first side, the outer edge of the first long section extends along the second side and the third side, the outer edge of the first long section extends to the corner between the third side and the first side, the outer edge of the second long section extends along the first side and the fourth side, the outer edge of the second long section extends to the corner between the fourth side and the second side, and the outer edge of the second short section is arranged along the first side.

[0009] In one embodiment, the inner side of the first short segment is connected to the inner side of the first long segment, the inner side of the first short segment and the inner side of the first long segment adjacent to the balun line are the first curved side, and the inner side of the first long segment adjacent to the third side is the second curved side.

[0010] In one embodiment, the inner side of the second long segment is connected to the inner side of the second short segment, the inner side of the second long segment and the inner side of the second short segment adjacent to the balun line are the third curved side, and the inner side of the second long segment adjacent to the fourth side is the fourth curved side.

[0011] In one embodiment, the inner side of the second long segment is connected to the inner side of the second short segment, the inner side of the second long segment and the inner side of the second short segment adjacent to the balun line are the third curved side, and the inner side of the second long segment adjacent to the fourth side is the fourth curved side.

[0012] In one embodiment, the side of the first short section away from the second radiator is the first short side, the side of the second short section away from the first radiator is the second short side, and the first short side and the second short side have the same length.

[0013] In one embodiment, the side lengths of the first short side and the second short side are in a range of 2.5 mm to 3.5 mm.

[0014] In one embodiment, the side of the outer side of the first long section extending to the first side is the first long side, and the side of the outer side of the second long section extending to the second side is the second long side, and the first long side and the second long side have the same length.

[0015] In one embodiment, the side lengths of the first long side and the second long side are in a range of 2 mm to 4 mm.

[0016] In one embodiment, the balun line includes a main line segment, a first connecting line segment and a second connecting line segment. Two ends of the main line segment are respectively connected to the first connecting line segment and the second connecting line segment. The first connecting line segment and the second connecting line segment are perpendicular to each other relative to the main line segment.

[0017] In one embodiment, the first connecting line segment connects the first short segment, the second connecting line segment connects the second short segment, the first connecting line segment extends along the outer side of the first short segment, one end of the first connecting line segment is connected to the first short segment, the inner side of the first connecting line segment and the first short segment have a first groove, the second connecting line segment extends along the outer side of the second short segment, one end of the second connecting line segment is connected to the second short segment, and the inner side of the second connecting line segment and the second short segment have a second groove.

[0018] In one embodiment, the length of the first groove and the length of the second groove are in the range of 0-6 mm.

[0019] In one embodiment, the first connecting line segment is connected to the second long section, the second connecting line segment is connected to the first long section, the first connecting line segment extends along the outer side of the second long section, one end of the first connecting line segment is connected to the second long section, the inner side of the first connecting line segment and the second long section have a third groove, the second connecting line segment extends along the outer side of the first long section, one end of the second connecting line segment is connected to the first long section, and the inner side of the second connecting line segment and the first long section have a fourth groove.

[0020] In one embodiment, the length of the third groove and the length of the fourth groove range from 0 to 6 mm.

[0021] In one embodiment, there is a first interval between the main line segment of the balun line and the first radiator, and there is a second interval between the main line segment of the balun line and the second radiator, and the first interval and the second interval have the same interval distance.

[0022] In one embodiment, a length ratio of the first radiator to the second radiator is between 1.1:0.9 and 0.9:1.1.

[0023] In one embodiment, the first short section and the second short section generate a second resonance mode, and the first long section and the second long section generate a first resonance mode and a third resonance mode.

[0024] In one embodiment, the first radiator and the second radiator are identical structures that are turned upside down and flipped left to right.

[0025] In one embodiment, the first radiator, the second radiator and the balun line are formed on the carrier surface of the dielectric carrier by printing, and the first radiator, the second radiator and the balun line are integrally formed.

[0026] In one embodiment, one end of the coaxial cable extends from the outside of the dielectric carrier into the upper surface of the dielectric carrier, and one end of the coaxial cable is connected to the radiating structure.

[0027] In one embodiment, one end of the coaxial cable extends into the upper surface of the dielectric carrier at right angles to one long side of the dielectric carrier, and is bent 90 degrees to connect to the radiation structure.

[0028] In one embodiment, the coaxial cable further includes a first insulating layer and a second insulating layer, the first insulating layer covers a portion of the surface of the inner conductor, leaving one end of the inner conductor exposed, and the exposed inner conductor is electrically connected to the second radiator, the outer conductor covers a portion of the surface of the first insulating layer, the second insulating layer covers a portion of the surface of the outer conductor, leaving a portion of the outer conductor exposed, and the exposed outer conductor is electrically connected to the first radiator.

[0029] In one embodiment, the first radiator and the second radiator are in the same plane or have a relative angle therebetween.

[0030] In the embodiment of the present application, the first radiator, the second radiator and the balun line (the balun line is located between the first radiator and the second radiator) are arranged at intervals on the carrier surface of the dielectric carrier, the inner conductor of the coaxial cable is electrically connected to the second radiator, the outer conductor of the coaxial cable is electrically connected to the first radiator, and the two ends of the balun line are respectively connected between the first short segment of the first radiator and the second short segment of the second radiator on both sides, so that the first short segment of the first radiator and the second short segment of the second radiator generate the second resonance mode (5GHZ), and the first long segment of the first radiator and the second long segment of the second radiator generate the first resonance mode (2.4GHz) and the third resonance mode (6GHz). Therefore, the dipole antenna of the embodiment of the present application can meet the communication requirements of 2.4GHz, 5GHz and 6GHz frequency bands while reducing the overall size, and has a simple structure and is easy to process, and can be applied to different wireless communication devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 is a three-dimensional diagram of a dipole antenna according to a first embodiment of the present application;

[0033] Figure 2 yes Figure 1 A local enlarged view of point A;

[0034] Figure 3is a three-dimensional diagram of a dipole antenna according to a second embodiment of the present application;

[0035] Figure 4 is a front view of a dipole antenna according to a second embodiment of the present application;

[0036] Figure 5 is a parameter curve diagram of the dipole antenna of the first and second embodiments;

[0037] Figure 6 is a parameter curve diagram of the slot lengths of the first slot and the second slot of the dipole antenna;

[0038] Figure 7 is a parameter curve graph of the side lengths of the first short side and the second short side of the dipole antenna;

[0039] Figure 8 is a parameter curve graph of the side lengths of the first long side and the second long side of the dipole antenna;

[0040] Fig. 9 is a three-dimensional diagram of a dipole antenna according to a third embodiment of the present application;

[0041] Fig.10 is a three-dimensional diagram of a dipole antenna according to a fourth embodiment of the present application;

[0042] Fig.11 is a three-dimensional diagram of a dipole antenna according to a fifth embodiment of the present application;

[0043] Fig.12 It is a perspective view of a dipole antenna according to a sixth embodiment of the present application.

[0044] The following is a description of the accompanying drawings: 1: dipole antenna; 2: dielectric carrier; 201: carrier surface; 21: first side; 22: second side; 23: third side; 24: fourth side; 3: radiation structure; 31: first radiator; 311: first short section; 3111: first short side; 312: first long section; 3121: first long side; 32: second radiator; 321: second short section; 3211: second short side; 322: second long section; 3221: first Two long sides; 33: balun line; 331: main line segment; 332: first connecting line segment; 333: second connecting line segment; 301: first curved edge; 302: second curved edge; 303: third curved edge; 304: fourth curved edge; 305: first slot; 306: second slot; 307: third slot; 308: fourth slot; 4: coaxial cable; 41: inner conductor; 42: outer conductor; 43: first insulating layer; 44: second insulating layer; A1: first interval; A2: second interval. DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described below with reference to the accompanying drawings. In these drawings, the same reference numerals represent the same or similar components or method flows.

[0046] It must be understood that the words "comprise", "include", etc. used in this specification are configured to indicate the existence of specific technical features, values, method steps, job processing and / or components, but do not exclude the addition of more technical features, values, method steps, job processing, components, or any combination of the above.

[0047] It should be understood that when a component is described as being "connected" or "coupled" to another component, it may be directly connected or coupled to the other component, and intermediate components may be present. Conversely, when a component is described as being "directly connected" or "directly coupled" to another component, there are no intermediate components.

[0048] In addition, although the terms “first”, “second”, etc. are used herein to describe different elements, such terms are merely used to distinguish elements or operations described with the same technical terms.

[0049] In addition, for ease of description, spatially relative terms such as "below," "beneath," "above," and the like may be used herein to describe the relationship of one element or feature to another (one or more) elements or (one or more) features as shown in the figures.

[0050] See also Figure 1 and Figure 2 , Figure 1 is a three-dimensional diagram of a dipole antenna according to a first embodiment of the present application and Figure 2 yes Figure 1A partial enlarged view of point A; As shown in the figure, the dipole antenna 1 of this embodiment is mainly used in wireless routers (AP Router), Internet of Things, wireless networking and other products. In this embodiment, the dipole antenna 1 includes a dielectric carrier 2, a radiating structure 3 and a coaxial cable 4. The dielectric carrier 2 can be but not limited to a Flame Retardant 4 (FR4) substrate, a printed circuit board (PCB), or a flexible printed circuit (FPC). The dielectric carrier 2 includes a carrier surface 201. The radiating structure 3 is arranged on the carrier surface 201. The radiating structure 3 includes a first radiator 31, a second radiator 32 and a balun line 33. The first radiator 31, the second radiator 32 and the balun line 33 are all planar structures and can be made of metal materials, such as: copper, silver, aluminum, iron, or alloys thereof. Therefore, the first radiator 31, the second radiator 32 and the balun line 33 can be formed on the carrier surface 201 of the medium carrier 2 by printing, and the first radiator 31, the second radiator 32 and the balun line 33 are integrally formed to facilitate processing. The first radiator 31 and the second radiator 32 are on the same plane. In other words, the carrier surface 201 is a planar structure, and the first radiator 31 and the second radiator 32 are located on the planar structure. The balun line 33 is located between the first radiator 31 and the second radiator 32. The first radiator 31 is located above the balun line 33, and the second radiator 32 is located below the balun line 33.

[0051] As described above, the first radiator 31 includes a first short segment 311 and a first long segment 312. The first short segment 311 and the first long segment 312 are adjacent to one side of the balun line 33 side by side, and the first long segment 312 extends in a direction away from the balun line 33. The second radiator 32 includes a second short segment 321 and a second long segment 322. The second short segment 321 and the second long segment 322 are adjacent to the other side of the balun line 33 side by side, and the second long segment 322 extends in a direction away from the balun line 33. The position of the first short segment 311 corresponds to the position of the second long segment 322, and the corresponding here means that the position of the first short segment 311 and the position of the second long segment 322 are relatively located on both sides of the balun line 33, and the line between the position of the first short segment 311 and the position of the second long segment 322 is perpendicular to the balun line 33. The position of the first long segment 312 corresponds to the position of the second short segment 321. Here, the term "corresponding" means that the position of the first long segment 312 and the position of the second short segment 321 are relatively located on both sides of the balun line 33, and the line between the position of the first long segment 312 and the position of the second short segment 321 is perpendicular to the balun line 33. The two ends of the balun line 33 are respectively connected between the first short segment 311 and the second short segment 321 on both sides. Figure 1As shown, one end of the balun line 33 is connected to the left end of the first short segment 311 (the end away from the second short segment 321), and the other end of the balun line 33 is connected to the right end of the second short segment 321 (the end away from the first short segment 311). The first radiator 31, the second radiator 32 and the balun line 33 form a balun-designed feeding structure, so that the first short segment 311 of the first radiator 31 and the second short segment 321 of the second radiator 32 generate a second resonance mode (5 GHz). The coaxial cable 4 includes an inner conductor 41 and an outer conductor 42. The outer conductor 42 is located outside the inner conductor 41. The inner conductor 41 is electrically connected to the second radiator 32, and the outer conductor 42 is electrically connected to the first radiator 31, so that the first long segment 312 of the first radiator 31 and the second long segment 322 of the second radiator 32 generate a first resonance mode (2.4 GHz) and a third resonance mode (6 GHz), achieving good high and low frequency matching.

[0052] In this embodiment, one end of the coaxial cable 4 extends from the outside of the dielectric carrier 2 into the upper surface 201 of the dielectric carrier 2, and one end of the coaxial cable 4 is connected to the radiation structure 3. One end of the coaxial cable 4 extends into the upper surface 201 of the dielectric carrier 2 perpendicularly to one long side of the dielectric carrier 2, and is bent 90 degrees to connect to the radiation structure 3, wherein one end of the coaxial cable 4 can be bent toward the first radiator 31 or the second radiator 32, which is adjusted according to the needs of the user. The coaxial cable 4 also includes a first insulating layer 43 and a second insulating layer 44, the first insulating layer 43 covers a portion of the surface of the inner conductor 41, so that one end of the inner conductor 41 is exposed, and the exposed inner conductor 41 is electrically connected to the second radiator 32, the outer conductor 42 covers a portion of the surface of the first insulating layer 43, the second insulating layer 44 covers a portion of the surface of the outer conductor 42, so that a portion of the outer conductor 42 is exposed, and the exposed outer conductor 42 is electrically connected to the first radiator 31.

[0053] See also Figure 2 In this embodiment, one end of the coaxial cable 4 having a bare inner conductor 41 and a bare outer conductor 42 extends from the side of the dielectric carrier 2 into the upper surface 201 of the dielectric carrier 2 and is bent downward by 90 degrees, and then the bare inner conductor 41 is electrically connected to the second radiator 32, and the bare outer conductor 42 is electrically connected to the first radiator 31. By feeding the antenna signal through the side of the dielectric carrier 2 through the coaxial cable 4, the influence of the coaxial cable 4 on the surface current of the radiating metal surface can be reduced. Among them, the inner conductor 41 can be but not limited to a silver-plated copper conductor, the first insulating layer 43 can be but not limited to a polytetrafluoroethylene insulating layer, the outer conductor 42 can be but not limited to a silver-plated copper wire wrapping layer, and the second insulating layer 44 can be but not limited to a polyvinyl chloride insulating layer; the bare inner conductor 41 can be electrically connected to the second radiator 32 and the bare outer conductor 42 can be electrically connected to the first radiator 31 by welding.

[0054] The dipole antenna 1 of this embodiment is configured by arranging the first radiator 31, the second radiator 32 and the balun line 33 on the carrier surface 201 of the dielectric carrier 2 at intervals, that is, the balun line 33 is located between the first radiator 31 and the second radiator 32, the inner conductor 41 of the coaxial cable 4 is electrically connected to the second radiator 32, the outer conductor 42 of the coaxial cable 4 is electrically connected to the first radiator 31, and the two ends of the balun line 33 are respectively connected between the first short segment 311 of the first radiator 31 and the second short segment 321 of the second radiator 32 on both sides, so that the first short segment 311 of the first radiator 31 and the second short segment 321 of the second radiator 32 generate the second resonance mode (5GHZ), and the first long segment 312 of the first radiator 31 and the second long segment 322 of the second radiator 32 generate the first resonance mode (2.4GHz) and the third resonance mode (6GHz). Therefore, the dipole antenna 1 of this embodiment can meet the communication requirements of 2.4 GHz, 5 GHz and 6 GHz frequency bands while reducing the overall size, and has a simple structure and is easy to process, and can be applied to different wireless communication devices. In addition, since the inner conductor 41 of the coaxial cable 4 will produce an inductance effect, the length of the first radiator 31 on the carrier surface 201 and the length of the first radiator 31 on the carrier surface 201 can be reduced, which can greatly reduce the size of the antenna (55 mm → 32 mm, a reduction of 42%).

[0055] See also Figures 3 to 5 , Figure 3 is a three-dimensional diagram of a dipole antenna according to a second embodiment of the present application, Figure 4 is a front view of a dipole antenna according to a second embodiment and Figure 5: is a parameter curve diagram of the dipole antenna of the first and second embodiments; as shown in the figure, the difference between the present embodiment and the first embodiment lies in the connection positions of the two ends of the balun line 33 and the first short segment 311 and the second short segment 321. In the present embodiment, the balun line 33 includes a main line segment 331, a first connecting line segment 332 and a second connecting line segment 333. The main line segment 331 is located between the first radiator 31 and the second radiator 32. There is a first interval A1 between the main line segment 331 of the balun line 33 and the first radiator 31, and there is a second interval A2 between the main line segment 331 of the balun line 33 and the second radiator 32, and the interval distances of the first interval A1 and the second interval A2 are the same. The two ends of the main line segment 331 are connected to the first connecting line segment 332 and the second connecting line segment 333 respectively. The first connecting line segment 332 and the second connecting line segment 333 are perpendicular to each other relative to the main line segment 331. The first connecting line segment 332 connects the first short segment 311. The first connecting line segment 332 extends along the outer side of the first short segment 311. One end of the first connecting line segment 332 is connected to the first short segment 311. The inner side of the first connecting line segment 332 and the first short segment 311 have a first groove 305. The length range of the first groove 305 is 0-6 mm. The second connecting line segment 333 is connected to the second short segment 321. The second connecting line segment 333 extends along the outer side of the second short segment 321. One end of the second connecting line segment 333 is connected to the second short segment 321, and the inner side of the second connecting line segment 333 and the second short segment 321 have a second groove 306. The length range of the second groove 306 is 0-6 mm. The second groove 306 and the first groove 305 have the same groove length L3. The balun line 33 of this embodiment is provided with a first connecting line segment 332 and a second connecting line segment 333 at both ends of the main line segment 331, which is equivalent to extending the two ends of the balun line in the first embodiment toward the first short segment 311 and the second short segment 321 to increase the total length of the balun line. At the same time, a first slot 305 and a second slot 306 are formed between the first connecting line segment 332 and the first short segment 311 and between the second connecting line segment 333 and the second short segment 321 of this embodiment, respectively. In this way, a slot hole design is formed between the main radiators, thereby making the third resonance mode have a good matching (such as Figure 5 shown).

[0056] Please refer to Figure 5 , compared with the parameter curve of the first embodiment, the first and second resonance modes of the present embodiment are similar to those of the first embodiment, but the third resonance mode of the present embodiment has a better effect than the first embodiment. The dipole antenna of the second embodiment is a preferred embodiment. The antenna structure of the second embodiment is further described in detail as follows: Please refer to Figure 4In this embodiment, the dielectric carrier 2 is a rectangular carrier, and the dielectric carrier 2 has a first side 21, a second side 22, a third side 23 and a fourth side 24. The two long sides of the radiation structure 3 are the first side 21 and the second side 22 respectively. The side adjacent to the first radiator 31 is the third side 23, and the side adjacent to the second radiator 32 is the fourth side 24. The first short section 311 is adjacent to the first side 21, the first long section 312 is adjacent to the second side 22, the second long section 322 is adjacent to the first side 21, and the second short section 321 is adjacent to the second side 22. The first short section 311 of the first radiator 31 and the second long section 322 of the second radiator 32 are adjacent to the first side 21, and the first long section 312 of the first radiator 31 and the second short section 321 of the second radiator 32 are adjacent to the second side 22.

[0057] As mentioned above, the outer side of the first short section 311 is arranged along the first side 21. The outer side of the first long section 312 extends along the second side 22 and the third side 23, and the outer side of the first long section 312 extends to the corner of the third side 23 and the first side 21. The outer side of the first long section 312 extends to form a "Γ"-shaped structure that is flipped left and right. The inner side of the first short section 311 is connected to the inner side of the first long section 312. The inner side of the first short section 311 adjacent to the balun line 33 and the inner side of the first long section 312 are the first curved edge 301. The inner side of the first long section 312 adjacent to the third side 23 is the second curved edge 302. The first curved edge 301 and the second curved edge 302 are both arc-shaped. The outer side of the second short section 321 is arranged along the first side 21. The outer side of the second long section 322 extends along the first side 21 and the fourth side 24, and the outer side of the second long section 322 extends to the corner of the fourth side 24 and the second side 22. The outer side of the second long section 322 extends to form a "Γ"-shaped structure that is turned upside down. The inner side of the second long section 322 is connected to the inner side of the second short section 321. The inner side of the second long section 322 adjacent to the balun line 33 and the inner side of the second short section 321 are the third curved side 303. The inner side of the second long section 322 adjacent to the fourth side 24 is the fourth curved side 304. The third curved side 303 and the fourth curved side 304 are both arc-shaped. In this embodiment, the first radiator 31 and the second radiator 32 have the same structure that is inverted upside down and flipped left to right, that is, the length of the first short side 3111 and the second short side 3211 are the same, the length of the first long side 3121 and the second long side 3221 are the same, and the outer side lengths of the first long section 312 of the first radiator 31 and the second long section 322 of the second radiator 32 are the same.

[0058] In addition, the side of one end of the first short section 311 away from the second radiator 32 is the first short side 3111, and the side of one end of the second short section 321 away from the first radiator 31 is the second short side 3211. The first short side 3111 and the second short side 3211 have the same side length L1. In addition, the side of the outer side of the first long section 312 extending to the first side 21 is the first long side 3121, and the side of the outer side of the second long section 322 extending to the second side 22 is the second long side 3221. The first long side 3121 and the second long side 3221 have the same side length L2.

[0059] Please also read Figure 6 , which is a parameter curve diagram of the slot length of the second slot and the first slot; as shown in the figure, the difference between this embodiment and the second embodiment lies in the adjustment of the slot length of the first slot 305 and the second slot 306. The dipole antenna 1 of this embodiment adjusts the first resonant mode (2.4GHz), the second resonant mode (5GHZ) and the third resonant mode (6GHz) by the slot length of the first slot 305 and the second slot 306. Among them, the parameter influence on the third resonant mode is obvious. Under the comprehensive consideration of the presentation effects of the above three resonant modes, the slot length L3 of the first slot 305 and the second slot 306 is preferably 4mm.

[0060] Please also read Figure 7 , is a parameter curve diagram of the side length of the first short side and the second short side of the dipole antenna; as shown in the figure, the difference between the present embodiment and the second embodiment lies in the adjustment of the side length L1 of the first short side 3111 and the second short side 3211. The dipole antenna 1 of the present embodiment adjusts the first resonance mode (2.4GHz), the second resonance mode (5GHZ) and the third resonance mode (6GHz) through the side length L1 of the first short side 3111 of the first short section 311 of the first radiator 31 and the second short side 3211 of the second short section 321 of the second radiator 32. The parameter influence on the second resonance mode and the third resonance membrane state is obvious. The side length L1 of the first short side 3111 and the second short side 3211 ranges from 2.5mm to 3.5mm. Under the comprehensive consideration of the presentation effects of the above three resonance modes, the side length L1 of the first short side 3111 and the second short side 3211 is preferably 3mm.

[0061] Please also read Figure 8, is a parameter curve diagram of the side length of the first long side and the second long side of the dipole antenna; as shown in the figure, the difference between the present embodiment and the second embodiment is that the side length L2 of the first long side 3121 and the second long side 3221 is adjusted. The dipole antenna 1 of the present embodiment adjusts the first resonance mode (2.4GHz), the second resonance mode (5GHZ) and the third resonance mode (6GHz) through the side length L2 of the first long side 3121 of the first long section 312 of the first radiator 31 and the second long side 3221 of the second long section 322 of the second radiator 32. Among them, the parameter influence on the first resonance mode and the second resonance membrane state is obvious. The side length L2 of the first long side 3121 and the second long side 3221 ranges from 2mm to 4mm. Under the comprehensive consideration of the presentation effect of the above three resonance modes, the side length L2 of the first long side 3121 and the second long side 3221 is preferably 3mm.

[0062] See also Fig. 9 , which is a three-dimensional diagram of a dipole antenna according to a third embodiment of the present application; as shown in the figure, the difference between this embodiment and the second embodiment lies in the structural shape of the dielectric carrier 2 disposed between the first radiator 31 and the second radiator 32. In this embodiment, there is a relative angle between the first radiator 31 and the second radiator 32. In other words, the carrier surface 201 is a bending surface, the first radiator 31 is located on one plane of the bending surface, and the second radiator 32 is located on the other plane of the bending surface. The bending surface can be bent inward or outward, so that the dipole antenna 1 of this embodiment can be applied to different types of products.

[0063] See also Fig.10 , which is a three-dimensional diagram of a dipole antenna of the fourth embodiment of the present application; as shown in the figure, the difference between this embodiment and the second embodiment is that the length ratio of the first radiator 31 and the second radiator 32 is different. The dipole antenna 1 of this embodiment can fine-tune its input impedance by adjusting the length ratio of the first radiator 31 and the second radiator 32, thereby adjusting the antenna matching. The length ratio of the first radiator 31 and the second radiator 32 is between 1.1:0.9 and 0.9:1.1. In other words, the length ratio of the outer side of the first long section 312 of the first radiator 31 and the second long section 322 of the second radiator 32 is between 1.1:0.9 and 0.9:1.1. In this way, the effects of adjusting the first resonance mode (2.4GHz), the second resonance mode (5GHZ) and the third resonance mode (6GHz) are adjusted according to the needs of the user.

[0064] See also Fig.11, which is a three-dimensional diagram of a dipole antenna according to the fifth embodiment of the present application; as shown in the figure, the difference between this embodiment and the second embodiment is that the two ends of the balun line 33 are respectively connected between the first long section 312 and the second long section 322 on both sides. In this embodiment, the first connecting line segment 332 of the balun line 33 is connected to the second long section 322, the first connecting line segment 332 extends along the outer side of the second long section 322, one end of the first connecting line segment 332 is connected to the second long section 322, and the inner side of the first connecting line segment 332 and the second long section 322 have a third slot 307, and the length range of the third slot 307 is 0-6mm. The second connecting line segment 333 of the balun line 33 is connected to the first long section 312, the second connecting line segment 333 extends along the outer side of the first long section 312, one end of the second connecting line segment 333 is connected to the first long section 312, the inner side of the second connecting line segment 333 and the first long section 312 have a fourth slot 308, and the length range of the fourth slot 308 is 0-6mm. In other words, the balun line 33 of this embodiment is a mirror image structure compared to the balun line of the second embodiment, so that the present fine-tuning input impedance can be achieved and the antenna matching can be adjusted.

[0065] See also Fig.12 , which is a three-dimensional diagram of a dipole antenna according to the sixth embodiment of the present application; as shown in the figure, the difference between this embodiment and the second embodiment lies in the signal feeding direction of the coaxial cable 4. In this embodiment, one end of the coaxial cable 4 having a bare inner conductor 41 and a bare outer conductor 42 extends orthogonally from the second side edge 22 of the dielectric carrier 2 to the top of the carrier surface 201 of the dielectric carrier 2 and is bent upward by 90 degrees, and then the bare inner conductor 41 is electrically connected to the first radiator 31, and the bare outer conductor 42 is electrically connected to the second radiator 32, so that the conversion / mirroring of the signal feeding direction can be achieved.

[0066] In summary, the present application provides a dipole antenna, by arranging a first radiator, a second radiator and a balun line (the balun line is located between the first radiator and the second radiator) on the carrier surface of a dielectric carrier at intervals, the inner conductor of the coaxial cable is electrically connected to the second radiator, the outer conductor of the coaxial cable is electrically connected to the first radiator, and the two ends of the balun line are respectively connected between the first short segment of the first radiator and the second short segment of the second radiator on both sides, so that the first short segment of the first radiator and the second short segment of the second radiator generate a second resonance mode (5GHZ), and the first long segment of the first radiator and the second long segment of the second radiator generate a first resonance mode (2.4GHz) and a third resonance mode (6GHz). Therefore, the dipole antenna of the embodiment of the present application can meet the communication requirements of 2.4GHz, 5GHz and 6GHz frequency bands while reducing the overall size, and has a simple structure and is easy to process, and can be applied to different wireless communication devices.

[0067] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0068] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A dipole antenna, characterized in that: include: A dielectric carrier, including a carrier surface; A radiation structure, arranged on the surface of the carrier, the radiation structure comprises a first radiator, a second radiator and a balun line, the balun line is located between the first radiator and the second radiator, wherein the first radiator comprises a first short segment and a first long segment, the first short segment and the first long segment are adjacent to one side of the balun line side by side, and the first long segment extends in a direction away from the balun line, the second radiator comprises a second short segment and a second long segment, the second short segment and the second long segment are adjacent to the other side of the balun line side by side, and the second long segment extends in a direction away from the balun line, the position of the first short segment corresponds to the position of the second long segment, the position of the first long segment corresponds to the position of the second short segment, and the two ends of the balun line are respectively connected between the first short segment and the second short segment or between the first long segment and the second long segment on both sides; The coaxial cable comprises an inner conductor and an outer conductor, wherein the outer conductor is located outside the inner conductor, the inner conductor is electrically connected to the second radiator, and the outer conductor is electrically connected to the first radiator.

2. The dipole antenna according to claim 1, characterized in that: The dielectric carrier has a first side, a second side, a third side and a fourth side, the long sides of the radiation structure are the first side and the second side respectively, the side adjacent to the first radiator is the third side, the side adjacent to the second radiator is the fourth side, the first short section is adjacent to the first side, the first long section is adjacent to the second side, the second long section is adjacent to the first side, and the second short section is adjacent to the second side.

3. The dipole antenna according to claim 2, characterized in that: The outer edge of the first short section is arranged along the first side, the outer edge of the first long section extends along the second side and the third side, the outer edge of the first long section extends to the corner between the third side and the first side, the outer edge of the second long section extends along the first side and the fourth side, the outer edge of the second long section extends to the corner between the fourth side and the second side, and the outer edge of the second short section is arranged along the first side.

4. The dipole antenna according to claim 3, characterized in that: The inner side edge of the first short segment is connected to the inner side edge of the first long segment, the inner side edge of the first short segment and the inner side edge of the first long segment adjacent to the balun line are the first curved side, and the inner side edge of the first long segment adjacent to the third side edge is the second curved side.

5. The dipole antenna according to claim 3, characterized in that: The inner side of the second long segment is connected to the inner side of the second short segment, the inner side of the second long segment and the inner side of the second short segment adjacent to the balun line are the third curved side, and the inner side of the second long segment adjacent to the fourth side is the fourth curved side.

6. The dipole antenna according to claim 3, characterized in that: One end side of the first short section away from the second radiator is a first short side, and one end side of the second short section away from the first radiator is a second short side. The first short side and the second short side have the same length.

7. The dipole antenna according to claim 6, characterized in that: The side lengths of the first short side and the second short side are in a range of 2.5 mm to 3.5 mm.

8. The dipole antenna according to claim 3, characterized in that: The side from the outer side of the first long section extending to the first side is the first long side, and the side from the outer side of the second long section extending to the second side is the second long side. The first long side is the same length as the second long side.

9. The dipole antenna according to claim 8, characterized in that: The side lengths of the first long side and the second long side range from 2 mm to 4 mm.

10. The dipole antenna according to claim 1, characterized in that: The balun line includes a main line segment, a first connecting line segment and a second connecting line segment. Two ends of the main line segment are respectively connected to the first connecting line segment and the second connecting line segment. The first connecting line segment and the second connecting line segment are perpendicular to each other relative to the main line segment.

11. The dipole antenna according to claim 10, characterized in that: The first connecting line segment connects the first short segment, the second connecting line segment connects the second short segment, the first connecting line segment extends along the outer side of the first short segment, one end of the first connecting line segment is connected to the first short segment, the inner side of the first connecting line segment and the first short segment have a first groove, the second connecting line segment extends along the outer side of the second short segment, one end of the second connecting line segment is connected to the second short segment, and the inner side of the second connecting line segment and the second short segment have a second groove.

12. The dipole antenna according to claim 11, characterized in that: The length of the first groove and the length of the second groove are in the range of 0-6 mm.

13. The dipole antenna according to claim 10, characterized in that: The first connecting line segment connects the second long segment, the second connecting line segment connects the first long segment, the first connecting line segment extends along the outer side of the second long segment, one end of the first connecting line segment is connected to the second long segment, the inner side of the first connecting line segment and the second long segment have a third groove, the second connecting line segment extends along the outer side of the first long segment, one end of the second connecting line segment is connected to the first long segment, and the inner side of the second connecting line segment and the first long segment have a fourth groove.

14. The dipole antenna according to claim 13, characterized in that: The length of the third groove and the length of the fourth groove are in the range of 0-6 mm.

15. The dipole antenna according to claim 10, characterized in that: There is a first interval between the main line segment of the balun line and the first radiator, and there is a second interval between the main line segment of the balun line and the second radiator, and the first interval and the second interval have the same interval distance.

16. The dipole antenna according to claim 1, characterized in that: The length ratio of the first radiator to the second radiator is between 1.1:0.9 and 0.9:1.

1.

17. The dipole antenna according to claim 1, characterized in that: The first short section and the second short section generate a second resonance mode, and the first long section and the second long section generate a first resonance mode and a third resonance mode.

18. The dipole antenna according to claim 1, characterized in that: The first radiator and the second radiator have the same structure which is turned upside down and flipped left to right.

19. The dipole antenna according to claim 1, characterized in that: The first radiator, the second radiator and the balun line are formed on the carrier surface of the dielectric carrier by printing, and the first radiator, the second radiator and the balun line are integrally formed.

20. The dipole antenna according to claim 1, characterized in that One end of the coaxial cable extends from the outer side of the dielectric carrier into the upper surface of the carrier of the dielectric carrier, and one end of the coaxial cable is connected to the radiation structure.

21. The dipole antenna according to claim 20, characterized in that One end of the coaxial cable extends into the upper surface of the dielectric carrier at right angles to one long side of the dielectric carrier, and is bent 90 degrees to connect to the radiation structure.

22. The dipole antenna according to claim 1, characterized in that The coaxial cable also includes a first insulating layer and a second insulating layer, the first insulating layer covers a portion of the surface of the inner conductor, leaving one end of the inner conductor bare, and the exposed inner conductor is electrically connected to the second radiator, the outer conductor covers a portion of the surface of the first insulating layer, the second insulating layer covers a portion of the surface of the outer conductor, leaving a portion of the outer conductor bare, and the exposed outer conductor is electrically connected to the first radiator.

23. The dipole antenna according to claim 1, characterized in that The first radiator and the second radiator are in the same plane or have a relative angle therebetween.

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