Omnidirectional antenna and communication device

Abstract

The application provides an omnidirectional antenna and a communication device, and the omnidirectional antenna comprises a dielectric substrate, a slot antenna and a dipole antenna. The dielectric substrate comprises a first surface and a second surface which are parallel to each other and arranged at intervals. The slot antenna is arranged on the first surface, and the slot antenna is internally provided with a slot and a through groove. The slot is in communication with the through groove. The dipole antenna is arranged on the second surface, and the dipole antenna comprises a radiation part and a non-radiation part. The radiation part is connected with the non-radiation part, and the radiation part is used for transmitting or receiving a beam. The orthographic projection of the radiation part on the first surface is located in the orthographic projection of the through groove on the first surface. The omnidirectional antenna has the advantage that the isolation between multiple antennas integrated in the omnidirectional antenna is high.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and more specifically, relates to an omnidirectional antenna and communication device. Background Technology

[0002] An omnidirectional antenna is an antenna whose radiation pattern uniformly covers 360° when radiating or receiving electromagnetic waves in a horizontal plane (azimuth angle). Related technologies employ integrated multiple antenna designs to increase the bandwidth of omnidirectional antennas. However, omnidirectional antennas in these technologies suffer from low isolation between the antennas. Utility Model Content

[0003] The purpose of this application is to provide an omnidirectional antenna and a communication device to solve the technical problem of low isolation between antennas in existing omnidirectional antennas.

[0004] In one aspect, embodiments of this application provide an omnidirectional antenna.

[0005] The omnidirectional antenna provided in this application includes a dielectric substrate, comprising a first surface and a second surface arranged parallel to each other and spaced apart; a slot antenna disposed on the first surface, wherein the slot antenna has a slot and a through slot, the slot being connected to the through slot; and a dipole antenna disposed on the second surface, wherein the dipole antenna includes a radiating part and a non-radiating part, the radiating part being connected to the non-radiating part, the radiating part being used to transmit or receive beams; wherein the orthographic projection of the radiating part on the first surface lies within the orthographic projection of the through slot on the first surface.

[0006] The beneficial effects of the omnidirectional antenna provided in this application embodiment are as follows: Compared with the prior art, the omnidirectional antenna provided in this application embodiment integrates a slot antenna and a dipole antenna on a dielectric substrate. On the one hand, the slot antenna and the dipole antenna are polarized and isolated, with the slot antenna being horizontally polarized and the dipole antenna being vertically polarized. On the other hand, the slot antenna and the dipole antenna are pattern decoupled, which can form a high isolation characteristic similar to that between a split lobe and a directional pattern, thereby improving the isolation between the slot antenna and the dipole antenna. This gives the omnidirectional antenna provided in this application the advantage of high isolation between its integrated multiple antennas.

[0007] In addition, the radiating part of the dipole antenna is staggered with that of the slot antenna, which reduces crosstalk between the dipole antenna and the slot antenna and further improves the isolation between the slot antenna and the dipole antenna. This gives the omnidirectional antenna provided in this application the advantage of high isolation between its integrated multiple antennas.

[0008] In some embodiments, the current within the radiating section is conducted in the same direction along a first direction;

[0009] The current in the through slot on both sides of the first direction is conducted along the second direction, which is orthogonal to the first direction, and the current conduction directions on both sides of the through slot in the second direction are opposite.

[0010] In some embodiments, the dipole antenna includes a first radiating portion and a second radiating portion arranged along a first direction, and the non-radiating portion is connected between the first radiating portion and the second radiating portion;

[0011] The slot antenna includes a first through slot and a second through slot, with the slot connecting the first through slot and the second through slot. The length of the slot is an integer multiple of half the wavelength of the electrical signal inside the slot antenna. The first through slot is arranged corresponding to the first radiating part, and the second through slot is arranged corresponding to the second radiating part.

[0012] In some embodiments, the non-radiating portion includes a connecting portion, a first transmission portion, and a second transmission portion, wherein the connecting portion extends along the first direction and is connected between the first transmission portion and the second transmission portion;

[0013] The current conduction direction in the first transmission section is symmetrical about the second direction. The first transmission section is connected to the first radiation section. The current conduction direction in the second transmission section is symmetrical about the second direction. The second transmission section is connected to the second radiation section. The length of the connection section is an integer multiple of half the wavelength of the electrical signal in the dipole antenna.

[0014] In some embodiments, the first transmission section includes a first transmission segment extending along the second direction, and there are multiple first radiating sections. Each of the multiple first radiating sections includes a first radiating segment extending along the first direction and a second radiating segment extending along the first direction. The length of the first radiating segment and the length of the second radiating segment are both one-quarter wavelengths of the electrical signal inside the dipole antenna. One end of the connecting section is connected to the midpoint of the first transmission segment. The first radiating segment and the second radiating segment are respectively connected to both ends of the first transmission segment, and both the first radiating segment and the second radiating segment are located on the side of the first transmission segment away from the connecting section.

[0015] The second transmission section includes a second transmission segment extending along the second direction. There are multiple second radiating sections, each including a third radiating segment extending along the first direction and a fourth radiating segment extending along the first direction. The length of the third radiating segment and the length of the fourth radiating segment are both one-quarter wavelengths of the electrical signal inside the dipole antenna. The other end of the connecting section is connected to the midpoint of the second transmission segment. The third radiating segment and the fourth radiating segment are respectively connected to both ends of the second transmission segment, and both the third radiating segment and the fourth radiating segment are located on the side of the second transmission segment away from the connecting section.

[0016] In some embodiments, the first transmission section further includes a third transmission segment and a fourth transmission segment extending along the second direction, both of which are coupled to the first transmission segment and are located on opposite sides of the connection section in the second direction. The plurality of first radiating sections further include a fifth radiating segment and a sixth radiating segment extending along the first direction. The length of both the fifth and sixth radiating segments is a quarter wavelength of the electrical signal within the dipole antenna. The fifth radiating segment is connected to the end of the third transmission segment away from the connection section and is located on the side of the third transmission segment away from the first transmission segment. The sixth radiating segment is connected to the end of the fourth transmission segment away from the connection section and is located on the side of the fourth transmission segment away from the first transmission segment.

[0017] The second transmission section further includes a fifth transmission segment extending along the second direction and a sixth transmission segment extending along the second direction. The fifth transmission segment and the sixth transmission segment are both coupled to the second transmission segment, and the fifth transmission segment and the sixth transmission segment are respectively located on both sides of the connecting section in the second direction. The plurality of second radiating sections further include a seventh radiating segment extending along the first direction and an eighth radiating segment extending along the first direction. The length of the seventh radiating segment and the length of the eighth radiating segment are both one-quarter wavelength of the electrical signal inside the dipole antenna. The seventh radiating segment is connected to the end of the fifth transmission segment away from the connecting section, and the seventh radiating segment is located on the side of the fifth transmission segment away from the second transmission segment. The eighth radiating segment is connected to the end of the sixth transmission segment away from the connecting section, and the eighth radiating segment is located on the side of the sixth transmission segment away from the second transmission segment.

[0018] In some embodiments, the slot antenna has a first feed section and a second feed section, the first feed section and the second feed section are arranged opposite to each other in the width direction of the slot, the first feed section and the second feed section are used to connect to a first port, and the electrical signal input to the first port from the first feed section is out of phase with the electrical signal input to the first port from the second feed section.

[0019] And / or, the dipole antenna is provided with a third feed section and a fourth feed section, the third feed section is provided at one end of the connection section near the first transmission section, and the fourth feed section is provided at the first transmission section, the third feed section and the fourth feed section are arranged opposite to each other along the first direction.

[0020] In some embodiments, the slot antenna is a ring structure, the slot antenna has an inner edge and an outer edge, the inner edge forms the through slot and the slot, and the minimum distance between any point on the outer edge and the inner edge is the same.

[0021] In some embodiments, the first radiating portion includes a first segment and a second segment arranged at intervals along the first direction, both the first segment and the second segment extending along the first direction, the end of the first segment away from the second segment being connected to the first transmitting portion, and the end of the second segment away from the first segment being connected to the first transmitting portion.

[0022] The second radiating part includes a third segment and a fourth segment arranged at intervals along the first direction. Both the third segment and the fourth segment extend along the first direction. The end of the third segment away from the fourth segment is connected to the first transmission part, and the end of the fourth segment away from the third segment is connected to the first transmission part.

[0023] Secondly, this application provides a communication device.

[0024] The communication device provided in this application includes the omnidirectional antenna described in any of the above embodiments.

[0025] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of the structure of an omnidirectional antenna provided in an embodiment of this application;

[0028] Figure 2 A schematic diagram of the first surface of an omnidirectional antenna provided in an embodiment of this application;

[0029] Figure 3 A schematic diagram of the current of a slot antenna for an omnidirectional antenna provided in an embodiment of this application;

[0030] Figure 4 A schematic diagram of the second surface of an omnidirectional antenna provided in an embodiment of this application;

[0031] Figure 5 A schematic diagram of the current of the dipole antenna of the omnidirectional antenna provided in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the slot antenna of the omnidirectional antenna provided in Embodiment 1 of this application;

[0033] Figure 7 This is a schematic diagram of the slot antenna of the omnidirectional antenna provided in Embodiment 2 of this application;

[0034] Figure 8 This is a schematic diagram of the omnidirectional antenna provided in Embodiment 3 of this application;

[0035] Figure 9 This is a schematic diagram of the slot antenna of the omnidirectional antenna provided in Embodiment 4 of this application;

[0036] Figure 10 A schematic diagram of the radiation parameter curves of the omnidirectional antenna provided in this application;

[0037] Figure 11 (a) in the image shows the radiation pattern of the slot antenna of the omnidirectional antenna provided in this application when it operates at 5.25 GHz;

[0038] Figure 11 (b) in the figure shows the radiation pattern of the dipole antenna of the omnidirectional antenna provided in this application when it operates at 5.25 GHz;

[0039] Figure 11 (c) in the figure shows the radiation pattern of the slot antenna of the omnidirectional antenna provided in this application when it is operating at 5.8 GHz;

[0040] Figure 11 In the diagram, (d) shows the radiation pattern of the dipole antenna of the omnidirectional antenna provided in this application when it operates at 5.8 GHz;

[0041] Figure 12 A schematic diagram of the average gain of the omnidirectional antenna provided in this application.

[0042] The following are the labeling elements in the figure:

[0043] 100. Omnidirectional antenna;

[0044] 10. Dielectric substrate; 11. First surface; 12. Second surface;

[0045] 20. Slot antenna; 21. Slot; 22. Through slot; 22a. First through slot; 22b. Second through slot; 23. First feed section; 24. Second feed section;

[0046] 30. Dipole antenna; 31. Radiating section; 31a. First radiating section; 31a1. First segment; 31a2. Second segment; 31b. Second radiating section; 31b1. Third segment; 31b2. Fourth segment; 311. First radiating segment; 312. Second radiating segment; 313. Third radiating segment; 314. Fourth radiating segment; 315. Fifth radiating segment; 316. Sixth radiating segment; 317. Seventh radiating segment; 318. Eighth radiating segment; 32. Non-radiating section; 321. First transmission segment; 322. Second transmission segment; 323. Third transmission segment; 324. Fourth transmission segment; 325. Fifth transmission segment; 326. Sixth transmission segment; 327. Connecting section; 331. First coupling segment; 332. Second coupling segment; 34. Third feed section; 35. Fourth feed section. Detailed Implementation

[0047] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0048] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0049] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] Please refer to the following: Figure 1 , Figure 2 and Figure 4 The omnidirectional antenna provided in the embodiments of this application will now be described.

[0052] It should be noted that the first direction in the following text is the x-direction shown in the figure, the second direction is the y-direction shown in the figure, and the third direction is the z-direction shown in the figure.

[0053] The omnidirectional antenna 100 provided in this application embodiment includes a dielectric substrate 10, a slot antenna 20, and a dipole antenna 30.

[0054] The dielectric substrate 10 includes a first surface 11 and a second surface 12 that are arranged parallel to each other and spaced apart.

[0055] like Figure 1 , Figure 2 and Figure 4 As shown, the dielectric substrate 10 is in the shape of a flat plate. A first surface 11 is provided on one side of the dielectric substrate 10 in the third direction z, and a second surface 12 is provided on the other side of the dielectric substrate 10 in the third direction z. Both the first surface 11 and the second surface 12 are... Figure 1 The xOy plane shown is parallel.

[0056] In some embodiments, the material of the dielectric substrate 10 may include one or more materials with low dielectric constants, such as FR4 (epoxy resin-based glass fiber composite material), RO4003C (glass cloth reinforced, ceramic-filled hydrocarbon material), etc.

[0057] The slot antenna 20 is disposed on the first surface 11. The slot antenna 20 has a slot 21 and a through slot 22 inside, and the slot 21 is connected to the through slot 22.

[0058] like Figure 1 and Figure 2As shown, the slot antenna 20 is a patch antenna. The slot antenna 20 is disposed on the first surface 11. The slot 21 and the through slot 22 are both connected to the first surface 11 and the side of the slot antenna 20 away from the first surface 11 along the third direction z. The size of the slot 21 in the second direction y is smaller than the size of the through slot 22 in the second direction y. The slot 21 is connected to the through slot 22. Due to the edge effect of the current distribution, the edge of the slot 21 is equivalent to the "discontinuity" boundary of the current. The electromagnetic field changes abruptly at this point, causing the current to concentrate on both sides of the slot 21 and the edge of the through slot 22.

[0059] like Figure 1 and Figure 4 As shown, the dipole antenna 30 is disposed on the second surface 12. The dipole antenna 30 includes a radiating part 31 and a non-radiating part 32. The radiating part 31 is connected to the non-radiating part 32. The radiating part 31 is used to transmit or receive beams.

[0060] The radiating part 31 of the dipole antenna 30 is used to radiate a beam outward. Since the beams generated inside the non-radiating part 32 of the dipole antenna 30 are opposite in phase and cancel each other out, the non-radiating part 32 of the dipole antenna 30 can be regarded as not radiating energy outward, and only radiating a beam outward through the radiating part 31.

[0061] like Figure 11 (a) and Figure 11 As shown in (c), the slot antenna 20 exhibits omnidirectional radiation characteristics in the vertical plane. That is, in the plane parallel to the xOy plane shown in the figure, the beam of the slot antenna 20 can achieve uniform radiation, while the radiation intensity of the slot antenna 20 along the third direction z is relatively weak, forming a typical figure-eight radiation pattern.

[0062] like Figure 11 (b) and Figure 11 As shown in (d), the dipole antenna 30 exhibits omnidirectional radiation characteristics on the horizontal plane. That is, in a plane parallel to the yOz plane shown in the figure, the beam of the dipole antenna 30 can achieve uniform radiation, while the radiation intensity of the dipole antenna 30 along the first direction x is relatively weak, forming a typical figure-eight radiation pattern.

[0063] Therefore, there is polarization isolation between the slot antenna 20 and the dipole antenna 30. In addition, the integral of the electric field product of the slot antenna 20 and the dipole antenna 30 in the far-field solid angle is equal to 0, forming a high isolation characteristic similar to the split lobe pattern and the directional pattern, so that the slot antenna 20 and the dipole antenna 30 have a high degree of isolation.

[0064] like Figure 1 , Figure 2 and Figure 4As shown, the orthographic projection of the radiating part 31 on the dielectric substrate 10 lies within the orthographic projection of the slot 22 on the dielectric substrate 10. This effectively reduces the mutual coupling between the slot antenna 20 and the dipole antenna 30, eliminating the need for additional circuit structures (such as capacitors), and maintaining high co-frequency isolation between the slot antenna 20 and the dipole antenna 30.

[0065] The beneficial effects of the omnidirectional antenna 100 provided in this application embodiment are as follows: Compared with the prior art, the omnidirectional antenna 100 provided in this application embodiment integrates the slot antenna 20 and the dipole antenna 30 on a dielectric substrate 10. On the one hand, the radiation characteristics of the slot antenna 20 and the radiation characteristics of the dipole antenna 30 have a dual relationship, and the isolation between the slot antenna 20 and the dipole antenna 30 is improved by beam isolation. On the other hand, the radiating part 31 of the dipole antenna 30 is staggered with the slot antenna 20, which reduces the crosstalk between the dipole antenna 30 and the slot antenna 20, further improving the isolation between the slot antenna 20 and the dipole antenna 30. Therefore, the omnidirectional antenna 100 provided in this application has the advantage of high isolation between its integrated multiple antennas.

[0066] like Figure 10 As shown, the omnidirectional antenna 100 provided in this application has a reflection coefficient of less than -10dB in the frequency band of 5.15GHz-5.85GHz and an isolation of 53dB.

[0067] In some embodiments provided in this application, such as Figure 4 and Figure 5 As shown, the current within the radiating section 31 is conducted along the same side in the first direction x. (As indicated...) Figure 2 and Figure 3 As shown, the current in the through slot 22 on both sides of the first direction x is conducted along the second direction y. The second direction y is orthogonal to the first direction x, and the current conduction directions on both sides of the through slot 22 in the second direction y are opposite.

[0068] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the current in the radiating section 31 is as follows Figure 5 As shown in b, the current direction at the edge of slot 22 is as follows Figure 3 As shown in a, the beams generated by the current on both sides of the slot 22 in the second direction y can cancel each other out, so the slot antenna 20 can be regarded as transmitting beams only through the current on both sides of the slot 22 in the first direction x.

[0069] Thus, the slot antenna 20 generates an omnidirectional beam with a polarization direction of the first direction x, and the dipole antenna 30 generates an omnidirectional beam with a polarization direction of the second direction y. The isolation between the slot antenna 20 and the dipole antenna 30 is further improved by polarization isolation, so that the omnidirectional antenna 100 provided in this application has the advantage of high isolation between its integrated multiple antennas.

[0070] In some embodiments provided in this application, such as Figure 1 As shown, the dipole antenna 30 includes a first radiating part 31a and a second radiating part 31b arranged along a first direction x. A non-radiating part 32 is connected between the first radiating part 31a and the second radiating part 31b. The path length of the electrical signal in the dipole antenna 30 propagating in the non-radiating part 32 is an integer multiple of half the wavelength of the electrical signal in the dipole antenna 30.

[0071] The slot antenna 20 includes a first through slot 22a and a second through slot 22b. A slot 21 is connected between the first through slot 22a and the second through slot 22b. The length of the slot 21 is an integer multiple of half the wavelength of the electrical signal inside the slot antenna 20. The first through slot 22a is arranged correspondingly to the first radiating part 31a, and the second through slot 22b is arranged correspondingly to the second radiating part 31b.

[0072] like Figure 1 and Figure 5 As shown, the currents in the first radiating part 31a and the second radiating part 31b are both conducted in the same direction along the first direction x. When passing through the first radiating part 31a and the second radiating part 31b, the dipole antenna 30 constitutes an electric dipole antenna. The first radiating part 31a and the second radiating part 31b are respectively located within the orthographic projection of the first through slot 22a and the second through slot 22b at both ends of the slot 21, which improves the integration of the omnidirectional antenna 100 and thereby reduces the size of the omnidirectional antenna 100 provided in the embodiments of this application.

[0073] By providing multiple through slots 22 and multiple radiating sections 31, the gain of the omnidirectional antenna 100 provided in this embodiment of the application is improved, such as... Figure 12 As shown, the horizontal average gain of the slot antenna 20 is greater than 3.7 dBi, and the horizontal average gain of the dipole antenna is greater than 4.4 dBi.

[0074] In some embodiments provided in this application, such as Figure 4 and Figure 5 As shown, the non-radiative part 32 includes a connecting part 327, a first transmission part, and a second transmission part. The connecting part 327 extends along a first direction x and is connected between the first transmission part and the second transmission part.

[0075] The current conduction direction in the first transmission section is symmetrical about the second direction y. The first transmission section is connected to the first radiating section 31a. The current conduction direction in the second transmission section is symmetrical about the second direction y. The second transmission section is connected to the second radiating section 31b. The length of the connecting section 327 is an integer multiple of half the wavelength of the electrical signal inside the dipole antenna 30.

[0076] Therefore, the beams generated at different positions of the first transmission section can cancel each other out, the beams generated at different positions of the second transmission section can cancel each other out, and the beams generated at different positions within the connecting section 327 can cancel each other out, so that the first transmission section, the second transmission section, and the connecting section 327 can be regarded as not radiating beams outward, reducing the influence of non-transmission sections on the radiation pattern of the dipole antenna 30.

[0077] In some embodiments provided in this application, such as Figure 4 and Figure 5 As shown, the first transmission section includes a first transmission segment 321 extending along the second direction y. There are multiple first radiating sections 31a. Each of the multiple first radiating sections 31a includes a first radiating segment 311 and a second radiating segment 312 extending along the first direction x. The length of the first radiating segment 311 and the second radiating segment 312 is one-quarter wavelength of the electrical signal inside the dipole antenna 30. One end of the connecting section 327 is connected to the midpoint of the first transmission segment 321. The first radiating segment 311 and the second radiating segment 312 are respectively connected to both ends of the first transmission segment 321, and the first radiating segment 311 and the second radiating segment 312 are both located on the side of the first transmission segment 321 away from the connecting section 327.

[0078] like Figure 4 and Figure 5 As shown, the current directions within the first transmission section and the first radiation section 31a are as follows: Figure 5 As shown, the current direction on one side of the first transmission segment 321 in the second direction y is opposite to the current direction on the other side of the first transmission segment 321 in the second direction y, so the first transmission segment 321 can be regarded as not radiating a beam outward. The currents in the first radiation segment 311 and the second radiation segment 312 are both conducted in the same direction along the first direction x, so that the first radiation segment 311 and the second radiation segment 312 radiate in the same direction to increase the gain of the dipole antenna 30.

[0079] The second transmission section includes a second transmission segment 322 extending along the second direction y. There are multiple second radiating sections 31b, each including a third radiating segment 313 and a fourth radiating segment 314 extending along the first direction x. The lengths of the third radiating segments 313 and 314 are one-quarter wavelengths of the electrical signal inside the dipole antenna 30. The other end of the connecting section 327 is connected to the midpoint of the second transmission segment 322. The third radiating segments 313 and 314 are respectively connected to both ends of the second transmission segment 322, and both the third radiating segments 313 and 314 are located on the side of the second transmission segment 322 away from the connecting section 327.

[0080] The current direction in the second transmission section and the second radiation section 31b is as follows: Figure 5 As shown, the current direction on one side of the second transmission segment 322 in the second direction y is opposite to the current direction on the other side of the second transmission segment 322 in the second direction y, so the second transmission segment 322 can be regarded as not radiating a beam outward. The currents in the third radiation segment 313 and the fourth radiation segment 314 are both conducted in the same direction along the first direction x, so that the third radiation segment 313 and the fourth radiation segment 314 radiate in the same direction to increase the gain of the dipole antenna 30.

[0081] In some embodiments provided in this application, such as Figure 4 and Figure 5 As shown, the first transmission section further includes a third transmission segment 323 and a fourth transmission segment 324 extending along the second direction y. Both the third transmission segment 323 and the fourth transmission segment 324 are coupled to the first transmission segment 321, and the third transmission segment 323 and the fourth transmission segment 324 are located on both sides of the connecting portion 327 in the second direction y. The plurality of first radiating portions 31a also include a fifth radiating segment 315 and a sixth radiating segment 316 extending along the first direction x. The lengths of the fifth radiating segment 315 and the sixth radiating segment 316 are one-quarter wavelengths of the electrical signal inside the dipole antenna 30. The fifth radiating segment 315 is connected to the end of the third transmission segment 323 away from the connecting portion 327, and the fifth radiating segment 315 is located on the side of the third transmission segment 323 away from the first transmission segment 321. The sixth radiating segment 316 is connected to the end of the fourth transmission segment 324 away from the connecting portion 327, and the sixth radiating segment 316 is located on the side of the fourth transmission segment 324 away from the first transmission segment 321.

[0082] like Figure 4 and Figure 5As shown, the third transmission segment 323 and the first transmission segment 321 both extend along the second direction y, and the third transmission segment 323 and the first transmission segment 321 are arranged at intervals along the first direction x. The third transmission segment 323 and the first transmission segment 321 are coupled together so that the current direction in the third transmission segment 323 is opposite to the current direction at the corresponding position in the first transmission segment 321. The fourth transmission segment 324 and the first transmission segment 321 both extend along the second direction y, and the fourth transmission segment 324 and the first transmission segment 321 are arranged at intervals along the first direction x. The fourth transmission segment 324 and the first transmission segment 321 are coupled together so that the current direction in the fourth transmission segment 324 is opposite to the current direction at the corresponding position in the first transmission segment 321.

[0083] The current direction in the fifth radiation section 315 and the sixth radiation section 316 is as follows Figure 5 As shown, the currents in the first radiating segment 311, the second radiating segment 312, the fifth radiating segment 315, and the sixth radiating segment 316 are all conducted in the same direction, thereby increasing the gain of the dipole antenna 30 by radiating in the same direction in the first radiating segment 311, the second radiating segment 312, the fifth radiating segment 315, and the sixth radiating segment 316.

[0084] The second transmission section also includes a fifth transmission segment 325 and a sixth transmission segment 326 extending along the second direction y. Both the fifth transmission segment 325 and the sixth transmission segment 326 are coupled to the second transmission segment 322, and the fifth transmission segment 325 and the sixth transmission segment 326 are located on both sides of the connecting portion 327 in the second direction y. The plurality of second radiating portions 31b also include a seventh radiating segment 317 and an eighth radiating segment 318 extending along the first direction x. The length of the seventh radiating segment 317 and the eighth radiating segment 318 is one-quarter wavelength of the electrical signal inside the dipole antenna 30. The seventh radiating segment 317 is connected to the end of the fifth transmission segment 325 away from the connecting portion 327, and the seventh radiating segment 317 is located on the side of the fifth transmission segment 325 away from the second transmission segment 322. The eighth radiating segment 318 is connected to the end of the sixth transmission segment 326 away from the connecting portion 327, and the eighth radiating segment 318 is located on the side of the sixth transmission segment 326 away from the second transmission segment 322.

[0085] like Figure 4 and Figure 5As shown, the fifth transmission segment 325 and the second transmission segment 322 both extend along the second direction y, and the fifth transmission segment 325 and the second transmission segment 322 are arranged at intervals along the first direction x. The fifth transmission segment 325 and the second transmission segment 322 are coupled together so that the current direction in the fifth transmission segment 325 is opposite to the current direction at the corresponding position in the second transmission segment 322. The sixth transmission segment 326 and the second transmission segment 322 both extend along the second direction y, and the sixth transmission segment 326 and the second transmission segment 322 are arranged at intervals along the first direction x. The sixth transmission segment 326 and the second transmission segment 322 are coupled together so that the current direction in the sixth transmission segment 326 is opposite to the current direction at the corresponding position in the second transmission segment 322.

[0086] The current directions in the seventh radiation segment 317 and the eighth radiation segment 318 are as follows Figure 5 As shown, the currents in the third radiation segment 313, the fourth radiation segment 314, the seventh radiation segment 317, and the eighth radiation segment 318 are all conducted in the same direction, thereby increasing the gain of the dipole antenna 30 by radiating in the same direction in the third radiation segment 313, the fourth radiation segment 314, the seventh radiation segment 317, and the eighth radiation segment 318.

[0087] In some embodiments provided in this application, such as Figure 4 and Figure 5 As shown, a first coupling segment 331 is connected between the end of the third transmission segment 323 near the fourth transmission segment 324 and the end of the fifth transmission segment 325 near the sixth transmission segment 326. The first coupling segment 331 is coupled to the connecting part 327. A second coupling segment 332 is connected between the end of the fourth transmission segment 324 near the third transmission segment 323 and the end of the sixth transmission segment 326 near the fifth transmission segment 325. The second coupling segment 332 is coupled to the connecting part 327.

[0088] As a result, the current direction in the first coupling segment 331 and the second coupling segment 332 is opposite to that in the connecting part 327, so that the current direction in the third transmission segment 323 and the fourth transmission segment 324 is opposite to the current direction in the first transmission segment 321, and the current direction in the fifth transmission segment 325 and the sixth transmission segment 326 is opposite to the current direction in the second transmission segment 322.

[0089] In some embodiments provided in this application, such as Figure 2 As shown, the slot antenna 20 is provided with a first feed section 23 and a second feed section 24. The first feed section 23 and the second feed section 24 are arranged opposite to each other in the width direction of the slot 21. The first feed section 23 and the second feed section 24 are used to connect to a first port, and the electrical signal input to the first feed section 23 at the first port is opposite in phase to the electrical signal input to the second feed section 24 at the first port.

[0090] like Figure 2As shown, both the first feed section 23 and the second feed section 24 are connected to the first port to conduct the electrical signal in the first port to the slot antenna 20, and the slot antenna 20 converts the electrical signal in the first port into a beam and transmits it.

[0091] The electrical signals in the first feed section 23 and the second feed section 24 are out of phase, so that the current conduction directions on both sides of the width of the slot 21 are opposite, and the current conduction direction within the slot antenna 20 is as follows: Figure 3 As shown.

[0092] In some embodiments provided in this application, such as Figure 4 As shown, the dipole antenna 30 is provided with a third feed section 34 and a fourth feed section 35. The third feed section 34 is located at one end of the connecting section 327 near the first transmission section 321, and the fourth feed section 35 is located at the first transmission section 321. The third feed section 34 and the fourth feed section 35 are arranged opposite to each other along the first direction x.

[0093] like Figure 4 As shown, the third feed section 34 and the fourth feed section 35 are both connected to the first port to conduct the electrical signal in the second port to the dipole antenna 30, and the dipole antenna 30 converts the electrical signal in the second port into a beam and transmits it.

[0094] The electrical signals in the third feed section 34 and the fourth feed section 35 are out of phase, so that the current conduction direction in the dipole antenna 30 is as follows: Figure 5 As shown in the figure.

[0095] In some embodiments provided in this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the edge of the slot antenna 20 coincides with the edge of the dielectric substrate 10, so that the patch of the slot antenna 20 has a larger area, reducing current concentration and reflection at the outer edge of the slot antenna 20, reducing the standing wave ratio (VSWR), and improving the matching efficiency between the slot antenna 20 and the first port.

[0096] In some embodiments provided in this application, such as Figure 6 As shown, the slot antenna 20 has a ring structure, with an inner edge and an outer edge. The inner edge forms a through slot 22 and a slot 21, and the minimum distance between any point on the outer edge and the inner edge is the same.

[0097] like Figure 6 As shown, the patch of the slot antenna 20 is a strip-shaped ring structure. The ring structure of the patch forms the through slot 22 and the slot 21. As a result, the patch of the slot antenna 20 is narrow, which can concentrate the current distribution around the slot 21 and the through slot 22, reduce the sidelobes, and improve the radiation effect of the slot antenna 20.

[0098] In some embodiments provided in this application, such as Figure 9 As shown, the first radiating part 31a includes a first segment 31a1 and a second segment 31a2 arranged at intervals along the first direction x. Both the first segment 31a1 and the second segment 31a2 extend along the first direction x. The end of the first segment 31a1 away from the second segment 31a2 is connected to the first transmission part, and the end of the second segment 31a2 away from the first segment 31a1 is connected to the first transmission part.

[0099] like Figure 9 As shown, the combination of the first segment 31a1 and the second segment 31a2 forms a folded dipole structure, making the first radiating segment 311, the second radiating segment 312, the fifth radiating segment 315 and the sixth radiating segment 316 in the first radiating part 31a a folded dipole. The dipole antenna 30 of the folded dipole has the characteristics of an equivalent tuned stub transmission line, which can compensate for the change of the input impedance of the dipole antenna 30 with frequency to a certain extent, thereby widening the bandwidth of the dipole antenna 30.

[0100] The second radiating section 31b includes a third segment 31b1 and a fourth segment 31b2 arranged at intervals along the first direction x. Both the third segment 31b1 and the fourth segment 31b2 extend along the first direction x. The end of the third segment 31b1 away from the fourth segment 31b2 is connected to the first transmission section, and the end of the fourth segment 31b2 away from the third segment 31b1 is connected to the first transmission section.

[0101] like Figure 9 As shown, the combination of the third segment 31b1 and the fourth segment 31b2 forms a folded dipole structure, making the third radiating segment 313, the fourth radiating segment 314, the seventh radiating segment 317 and the eighth radiating segment 318 in the second radiating part 31b a folded dipole. The dipole antenna 30 of the folded dipole has the characteristics of an equivalent tuned stub transmission line, which can compensate for the change of the input impedance of the dipole antenna 30 with frequency to a certain extent, thereby widening the bandwidth of the dipole antenna 30.

[0102] In some embodiments provided in this application, such as Figure 8 As shown, the number of through slots 22 is an even number greater than 2. The first through slot 22a and the second through slot 22b are arranged alternately along the first direction x. Each first through slot 22a is provided with a first radiating part 31a, and each second through slot 22b is provided with a second radiating part 31b.

[0103] Therefore, on the one hand, increasing the number of through slots 22 can increase the amount of current conducted at both ends of the through slots 22 in the first direction x, thereby improving the gain of the slot antenna 20. On the other hand, increasing the number of through slots 22 can correspondingly increase the number of radiating parts 31, thereby improving the gain of the dipole antenna 30.

[0104] In some embodiments provided in this application, such as Figure 7As shown, the slot 21 is curved and extended, which reduces the spacing between two adjacent through slots 22 in the first direction x without reducing the length of the slot 21, thereby achieving miniaturization of the antenna.

[0105] The communication device provided in this application includes the omnidirectional antenna 100 provided in any of the above embodiments.

[0106] Because the omnidirectional antenna 100 provided in this application embodiment has the advantage of high isolation between the integrated slot antenna 20 and dipole antenna 30, the communication device provided in this application embodiment can radiate in all directions while also realizing multi-antenna communication.

[0107] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An omnidirectional antenna, characterized in that, include: A dielectric substrate includes a first surface and a second surface arranged parallel to and spaced apart from each other; A slotted antenna is disposed on the first surface. The slotted antenna has a slot and a through slot, and the slot is connected to the through slot. A dipole antenna is disposed on the second surface. The dipole antenna includes a radiating part and a non-radiating part. The radiating part is connected to the non-radiating part. The radiating part is used to transmit or receive beams. Wherein, the orthographic projection of the radiating part on the first surface is located within the orthographic projection of the through groove on the first surface.

2. The omnidirectional antenna as described in claim 1, characterized in that: The current within the radiating section is conducted in the same direction along the first direction; The current in the through slot on both sides of the first direction is conducted along the second direction, which is orthogonal to the first direction, and the current conduction directions on both sides of the through slot in the second direction are opposite.

3. The omnidirectional antenna as described in claim 2, characterized in that: The dipole antenna includes a first radiating part and a second radiating part arranged along a first direction, and the non-radiating part is connected between the first radiating part and the second radiating part; The slot antenna includes a first through slot and a second through slot, with the slot connecting the first through slot and the second through slot. The length of the slot is a positive integer multiple of half the wavelength of the electrical signal inside the slot antenna. The first through slot is arranged corresponding to the first radiating part, and the second through slot is arranged corresponding to the second radiating part.

4. The omnidirectional antenna as described in claim 3, characterized in that; The non-radiative part includes a connecting part, a first transmission part, and a second transmission part. The connecting part extends along the first direction and is connected between the first transmission part and the second transmission part. The current conduction direction in the first transmission section is symmetrical about the second direction. The first transmission section is connected to the first radiation section. The current conduction direction in the second transmission section is symmetrical about the second direction. The second transmission section is connected to the second radiation section. The length of the connection section is an integer multiple of half the wavelength of the electrical signal in the dipole antenna.

5. The omnidirectional antenna as described in claim 4, characterized in that: The first transmission section includes a first transmission segment extending along the second direction. There are multiple first radiating sections, each including a first radiating segment extending along the first direction and a second radiating segment extending along the first direction. The length of the first radiating segment and the length of the second radiating segment are both one-quarter wavelengths of the electrical signal inside the dipole antenna. One end of the connecting section is connected to the midpoint of the first transmission segment. The first radiating segment and the second radiating segment are respectively connected to both ends of the first transmission segment, and both the first radiating segment and the second radiating segment are located on the side of the first transmission segment away from the connecting section. The second transmission section includes a second transmission segment extending along the second direction. There are multiple second radiating sections, each including a third radiating segment extending along the first direction and a fourth radiating segment extending along the first direction. The length of the third radiating segment and the length of the fourth radiating segment are both one-quarter wavelengths of the electrical signal inside the dipole antenna. The other end of the connecting section is connected to the midpoint of the second transmission segment. The third radiating segment and the fourth radiating segment are respectively connected to both ends of the second transmission segment, and both the third radiating segment and the fourth radiating segment are located on the side of the second transmission segment away from the connecting section.

6. The omnidirectional antenna as described in claim 5, characterized in that: The first transmission section further includes a third transmission segment and a fourth transmission segment extending along the second direction. The third transmission segment and the fourth transmission segment are both coupled to the first transmission segment, and the third transmission segment and the fourth transmission segment are respectively located on both sides of the connecting section in the second direction. The plurality of first radiating sections further include a fifth radiating segment and a sixth radiating segment extending along the first direction. The length of the fifth radiating segment and the length of the sixth radiating segment are both one-quarter wavelength of the electrical signal inside the dipole antenna. The fifth radiating segment is connected to the end of the third transmission segment away from the connecting section, and the fifth radiating segment is located on the side of the third transmission segment away from the first transmission segment. The sixth radiating segment is connected to the end of the fourth transmission segment away from the connecting section, and the sixth radiating segment is located on the side of the fourth transmission segment away from the first transmission segment. The second transmission section further includes a fifth transmission segment extending along the second direction and a sixth transmission segment extending along the second direction. The fifth transmission segment and the sixth transmission segment are both coupled to the second transmission segment, and the fifth transmission segment and the sixth transmission segment are respectively located on both sides of the connecting section in the second direction. The plurality of second radiating sections further include a seventh radiating segment extending along the first direction and an eighth radiating segment extending along the first direction. The length of the seventh radiating segment and the length of the eighth radiating segment are both one-quarter wavelength of the electrical signal inside the dipole antenna. The seventh radiating segment is connected to the end of the fifth transmission segment away from the connecting section, and the seventh radiating segment is located on the side of the fifth transmission segment away from the second transmission segment. The eighth radiating segment is connected to the end of the sixth transmission segment away from the connecting section, and the eighth radiating segment is located on the side of the sixth transmission segment away from the second transmission segment.

7. The omnidirectional antenna as described in claim 5, characterized in that: The slot antenna has a first feed section and a second feed section, which are arranged opposite to each other in the width direction of the slot. The first feed section and the second feed section are used to connect to a first port, and the electrical signal input to the first port from the first feed section is out of phase with the electrical signal input to the first port from the second feed section. And / or, the dipole antenna is provided with a third feed section and a fourth feed section, the third feed section is provided at one end of the connection section near the first transmission section, and the fourth feed section is provided at the first transmission section, the third feed section and the fourth feed section are arranged opposite to each other along the first direction.

8. The omnidirectional antenna as described in claim 5, characterized in that: The slot antenna has a ring structure, with an inner edge and an outer edge. The inner edge forms the through slot and the gap. The minimum distance between any point on the outer edge and the inner edge is the same.

9. The omnidirectional antenna as described in any one of claims 4-8, characterized in that: The first radiating part includes a first segment and a second segment arranged at intervals along the first direction. Both the first segment and the second segment extend along the first direction. The end of the first segment away from the second segment is connected to the first transmission part, and the end of the second segment away from the first segment is connected to the first transmission part. The second radiating part includes a third segment and a fourth segment arranged at intervals along the first direction. Both the third segment and the fourth segment extend along the first direction. The end of the third segment away from the fourth segment is connected to the first transmission part, and the end of the fourth segment away from the third segment is connected to the first transmission part.

10. A communication device, characterized in that, Includes an omnidirectional antenna as described in any one of claims 1-9.

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