Antenna and electronic equipment

Abstract

The utility model discloses an antenna and an electronic device. The antenna includes a dielectric substrate and an antenna radiating unit. The antenna radiating unit is arranged on the upper surface of the dielectric substrate. The antenna radiating unit includes a feeding port, a first radiating unit, a second radiating unit and a third radiating unit. The feeding port is arranged at the edge of the upper surface of the dielectric substrate. The first radiating unit is connected to the feeding port. The second radiating unit is perpendicular to the first radiating unit and connected to the first radiating unit. The first radiating unit and the second radiating unit are integrally formed. The third radiating unit is arranged on the first side of the first radiating unit and is located on the side of the second radiating unit close to the feeding port. The third radiating unit and the first radiating unit are spaced apart to form a first gap. The first gap is used for gap coupling feeding. The second radiating unit and the third radiating unit are spaced apart to form a second gap. The electronic device includes the above antenna. The antenna of the utility model is small in size and has a large bandwidth.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and more specifically, to an antenna and electronic equipment. Background Art

[0002] Antenna is a module that completes signal reception and transmission in wireless communication system, and is also a module for converting circuit parameters and spatial electromagnetic parameters. The performance of antenna directly affects the overall indicators of wireless communication system. With the continuous development of wireless communication system and the emergence of new demands and new functions, higher requirements are placed on antennas, requiring antennas to be miniaturized, low-profile, and easy to integrate. In addition, in real environment, electromagnetic waves radiated by antennas will produce reflection, refraction and other phenomena when encountering obstacles, resulting in multipath fading. Circularly polarized antennas have great advantages over linearly polarized antennas in resisting multipath fading. The polarization direction of circularly polarized antennas rotates and changes periodically with time, and can receive electromagnetic waves of any polarization direction. The placement of transmitting antennas is not required. In addition, the right (left) circularly polarized wave radiated by circularly polarized antennas will become an orthogonal left (right) circularly polarized wave after reflection from the ground plane, thereby suppressing other multipath signals in non-direct paths. Therefore, miniaturized, low-profile, and high-performance circularly polarized antennas have very good application prospects in satellite navigation, ranging and positioning, and vehicle-mounted communications.

[0003] By exciting two orthogonal currents with a phase difference of 90°, circularly polarized radiation waves can be generated. In existing circularly polarized antenna implementation schemes, such as Figure 1 The microstrip circularly polarized antenna with power division network shown in the figure has a power division network designed so that the signal has a 90° phase difference after passing through two paths. The 90° phase difference corresponds to a quarter wavelength, so the final circularly polarized antenna will be very large, but the antenna bandwidth will not be very wide, and usually requires multiple layers of PCB boards to be stacked up and down, resulting in a very thick antenna, which is difficult to apply to terminal products with strict size requirements. Figure 2 The circularly polarized antenna shown uses two mutually perpendicular dipole antennas and realizes the radiation of circularly polarized waves by designing a feed point network. However, the feed point is set at the center of the PCB board, which makes it difficult to integrate with other RF circuits. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model innovatively provides an antenna and an electronic device, which is a low-profile antenna without a complex power division network, does not require multiple layers of dielectric substrates to be stacked up and down, has a simple structure, a small size, a large bandwidth, and excellent performance; there is only one feeding point, and the feeding point is set on one side edge of the dielectric substrate, which is easy to make a separate antenna module or integrate with the radio frequency circuit.

[0005] In order to achieve the above technical objectives, the utility model discloses an antenna in a first aspect, including a dielectric substrate and an antenna radiating unit.

[0006] The antenna radiating unit is arranged on the upper surface of the dielectric substrate, and the antenna radiating unit includes a feeding port, a first radiating unit, a second radiating unit and a third radiating unit. The feeding port is arranged at the edge of the upper surface of the dielectric substrate, the first end of the first radiating unit is connected to the feeding port, the second radiating unit is perpendicular to the first radiating unit and connected to the second end of the first radiating unit, the first radiating unit and the second radiating unit are integrally formed, the third radiating unit is arranged on the first side of the first radiating unit and is located on the side of the second radiating unit close to the feeding port, the third radiating unit and the first radiating unit are spaced apart to form a first gap, the first gap is used for gap coupling feeding so that the first radiating unit excites current on the third radiating unit, and the second radiating unit and the third radiating unit are spaced apart to form a second gap.

[0007] Furthermore, the antenna radiation unit also includes a fourth radiation unit, which is arranged in the second slot and connects the second radiation unit and the third radiation unit.

[0008] Furthermore, the fourth radiation unit is perpendicular to the second radiation unit.

[0009] Furthermore, an end portion of the second radiating unit away from the first side of the first radiating unit is bent toward an edge direction of the dielectric substrate where the feeding port is located.

[0010] Furthermore, a first reference floor is provided on the lower surface of the dielectric substrate.

[0011] Furthermore, a first ground via hole is formed on the dielectric substrate, and the first ground via hole is electrically connected to the third radiation unit and the first reference ground plane respectively.

[0012] Furthermore, the antenna radiating unit also includes a fifth radiating unit, which is arranged on the second side of the first radiating unit and is located on the side of the second radiating unit close to the feeding port, the second side is opposite to the first side, and a distance is maintained between the fifth radiating unit and the first radiating unit to form a third gap, and the third gap is used for slot coupling feeding so that the first radiating unit excites current on the fifth radiating unit, and a distance is maintained between the fifth radiating unit and the second radiating unit to form a fourth gap.

[0013] Furthermore, a second reference floor is provided on the lower surface of the dielectric substrate.

[0014] Furthermore, a second ground via hole is formed on the dielectric substrate, and the second ground via hole electrically connects the third radiation unit and the second reference ground, and the fifth radiation unit and the second reference ground respectively.

[0015] To achieve the above technical purpose, the second aspect of the utility model discloses an electronic device, including the antenna described in the first aspect.

[0016] The beneficial effects of the utility model are:

[0017] The antenna of the utility model is a low-profile antenna without a complex power division network, does not require multiple layers of dielectric substrates to be stacked up and down, has a simple structure, a small size, a large bandwidth, and excellent performance; there is only one feeding point, and the feeding point is set on one side edge of the dielectric substrate, which is easy to make a separate antenna module or integrate with the radio frequency circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a commonly used microstrip circularly polarized antenna with a power division network.

[0019] Figure 2 It is a structural schematic diagram of an existing circularly polarized antenna.

[0020] Figure 3 It is a structural schematic diagram of the antenna of the first embodiment of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the antenna of the second embodiment of the utility model.

[0022] Figure 5 It is a schematic structural diagram of an antenna according to a third embodiment of the present utility model.

[0023] Figure 6 It is a structural schematic diagram of the antenna of the fourth embodiment of the utility model.

[0024] Figure 7 It is a structural schematic diagram of an antenna according to a fifth embodiment of the present utility model.

[0025] Figure 8 It is a schematic structural diagram of an antenna according to a sixth embodiment of the present utility model.

[0026] Fig. 9 It is a structural schematic diagram of the antenna of the seventh embodiment of the utility model.

[0027] Fig.10 This is a time distribution diagram of the surface current of the third radiation unit in an embodiment of the utility model.

[0028] Fig.11 It is a return loss curve diagram of the antenna according to the embodiment of the utility model.

[0029] Fig.12 4 is an axial ratio curve diagram of the antenna according to the embodiment of the present utility model.

[0030] Fig.13 It is an input impedance curve diagram of the antenna according to the embodiment of the utility model.

[0031] Fig.14 It is the radiation pattern of the antenna of the embodiment of the utility model at the frequency of 2.44 GHz.

[0032] In the figure,

[0033] 1. Dielectric substrate; 2. Antenna radiating element; 20. Feed port; 21. First radiating element; 22. Second radiating element; 23. Third radiating element; 24. Fourth radiating element; 25. Fifth radiating element; 26. First gap; 27. Second gap; 28. Third gap; 29. ​​Fourth gap; 3. First reference floor; 31. First ground via; 4. Second reference floor; 41. Second ground via; x, width direction; y, length direction. DETAILED DESCRIPTION

[0034] The antenna and the electronic device provided by the utility model are explained and illustrated in detail below in conjunction with the drawings of the specification.

[0035] This embodiment specifically discloses an antenna, such as Figure 3 As shown, it includes a dielectric substrate 1 and an antenna radiating unit 2, the antenna radiating unit 2 is arranged on the upper surface of the dielectric substrate 1, the antenna radiating unit 2 includes a feeding port 20, a first radiating unit 21, a second radiating unit 22 and a third radiating unit 23, the feeding port 20 is arranged at the edge of the upper surface of the dielectric substrate 1, the feeding port 20 is the place where the excitation source is added, and is used to add the excitation source.

[0036] The first end of the first radiation unit 21 is connected to the feeding port 20, and the current generated by the excitation source will flow through the first radiation unit 21 and generate radiation; the second radiation unit 22 is perpendicular to the first radiation unit 21 and connected to the second end of the first radiation unit 21, the feeding port 20 is arranged at one end of the first radiation unit 21, the second radiation unit 22 is arranged perpendicularly at the other end of the first radiation unit 21, and the two ends of the second radiation unit 22 extend to both sides of the first radiation unit 21. The second radiation unit 22 forms a "T"-shaped structure with the first radiation unit 21, so that the currents on the first radiation unit 21 and the second radiation unit 22 have a phase difference of 90°, and radiate circularly polarized waves. Preferably, the first radiation unit 21 and the second radiation unit 22 are integrally formed.

[0037] The third radiation unit 23 is arranged on the first side of the first radiation unit 21 and is located on the side of the second radiation unit 22 close to the feeding port 20. Preferably, the third radiation unit 23 is arranged on the left side of the first radiation unit 21. The third radiation unit 23 is close to the edge of the first radiation unit 21 and is spaced from the first radiation unit 21 to form a first gap 26. The first gap 26 is used for gap coupling feeding, so that the first radiation unit 21 can excite a current on the third radiation unit 23, and can excite a current with a phase difference of 90°. On the basis of the circularly polarized waves radiated by the current on the first radiation unit 21 and the second radiation unit 22 which are perpendicular to each other, the radiation effect of the circularly polarized waves is enhanced. The third radiation unit 23 is also used to adjust the impedance matching of the antenna and increase the impedance bandwidth of the antenna. At the same time, the third radiation unit 23 is the ground of the antenna located on the top of the dielectric substrate 1.

[0038] The second radiating element 22 is close to the side of the third radiating element 23 and the third radiating element 23 to form a second gap 27. No other conductive units are arranged in the second gap 27, and the length of the second gap 27 along the length direction of the first radiating element 21 (i.e., the length along the y-axis direction in the figure) is relatively large. The second gap 27 provides sufficient clearance to weaken the spatial coupling between the second radiating element 22 and the third radiating element 23, and the second radiating element 22 will hardly couple out current on the third radiating element 23 through the second gap 27.

[0039] By adjusting the width of the first radiation unit 21 (i.e., the length along the x-axis direction in the figure) and the width of the first slot 26, the characteristic impedance of the feeding port 20 can be 50Ω, which is convenient for impedance matching. Optionally, the width of the first slot 26 is 0.5mm or 1mm, and the specific width of the first slot 26 is not limited in this application.

[0040] The feeding port 20 is arranged at the edge of the dielectric substrate 1, which is convenient for welding the RF connector for testing and also convenient for integration with the RF circuit. After the feeding port 20 is connected to the RF connector, the RF connector is arranged on the side of the antenna, and the upper part of the RF connector is connected to the ground (the third radiation unit 23) of the antenna located on the top of the dielectric substrate 1, providing a return path for the feeding port 20.

[0041] By rationally arranging the feeding port 20 , the first radiation unit 21 , the second radiation unit 22 and the third radiation unit 23 , a low profile and small size design of the antenna can be achieved.

[0042] Alternatively, if Figure 4As shown, the antenna radiation unit 2 also includes a fourth radiation unit 24, which is arranged in the second slot 27 and connects the second radiation unit 22 and the third radiation unit 23, one end of the fourth radiation unit 24 is connected to the second radiation unit 22, and the other end of the fourth radiation unit 24 is connected to the third radiation unit 23, and the fourth radiation unit 24 provides a direct current excitation path for the third radiation unit 23, and can also be used to adjust the impedance matching of the antenna. Preferably, the first radiation unit 21, the second radiation unit 22, the third radiation unit 23 and the fourth radiation unit 24 are integrally formed.

[0043] The first radiation unit 21 excites current on the third radiation unit 23 through the slot coupling feeding action of the first slot 26. At the same time, the second radiation unit 22 also provides a direct excitation source to the third radiation unit 23 through the connection action of the fourth radiation unit 24, thereby exciting a current with a phase difference of 90° on the third radiation unit 23. The two current excitation sources (the first radiation unit 21 and the second radiation unit 22) will generate a very strong circularly polarized radiation wave on the third radiation unit 23.

[0044] Except for the fourth radiation unit 24, no other conductive units are arranged in the second slot 27. The dimensions of the second slot 27 along the length direction and the width direction of the first radiation unit 21 are both large. The second slot 27 provides sufficient clearance to weaken the spatial coupling between the second radiation unit 22 and the third radiation unit 23, and weaken the spatial coupling between the first radiation unit 21 and the fourth radiation unit 24. The second radiation unit 22 hardly couples current to the third radiation unit 23 through the second slot 27.

[0045] Preferably, the fourth radiation unit 24 is perpendicular to the second radiation unit 22 and connected to one end of the second radiation unit 22, so that the second radiation unit 22 and the fourth radiation unit 24 form an "L"-shaped radiation structure, which can reduce the length of the antenna radiation unit 2 on the one hand and provide a variable for adjusting impedance matching; on the other hand, the fourth radiation unit 24 provides a directly connected current excitation path for the third radiation unit 23, further increasing the circularly polarized radiation wave.

[0046] By properly arranging the feeding port 20 , the first radiation unit 21 , the second radiation unit 22 , the third radiation unit 23 and the fourth radiation unit 24 , a low profile and small size design of the antenna can be achieved.

[0047] Alternatively, if Figure 5As shown, a first reference floor 3 is provided on the lower surface of the dielectric substrate 1, and the first reference floor 3 serves as the ground at the bottom of the dielectric substrate 1. After the feeding port 20 is connected to the RF connector, the RF connector is arranged on the side of the antenna, the upper part of the RF connector is connected to the third radiation unit 23, and the bottom of the RF connector is connected to the first reference floor 3, providing a return path for the feeding port 20.

[0048] like Figure 6 As shown, a first ground via 31 is provided on the dielectric substrate 1, and the first ground via 31 is electrically connected to the third radiation unit 23 and the first reference ground plane 3 respectively. The first ground via 31 is a metal via, which passes through the dielectric substrate 1, and the top of the first ground via 31 is connected to the third radiation unit 23, and the bottom of the first ground via 31 is connected to the first reference ground plane 3, providing a return path for the feeding port 20. The number of the first ground vias 31 can be multiple, and the multiple first ground vias 31 can be arranged along the length direction of the dielectric substrate 1, can be arranged along the width direction of the dielectric substrate 1, or can be arranged in an array.

[0049] In some embodiments, Figure 7 As shown, the antenna radiation unit 2 also includes a fifth radiation unit 25, which is arranged on the second side of the first radiation unit 21 and located on the side of the second radiation unit 22 close to the feeding port 20, the second side is opposite to the first side, in this embodiment, the fifth radiation unit 25 is arranged on the right side of the first radiation unit 21 and located on the side of the second radiation unit 22 close to the feeding port 20, the side of the fifth radiation unit 25 close to the first radiation unit 21 is kept at a distance from the first radiation unit 21 to form a third slot 28, the third slot 28 is used for slot coupling feeding, so that the first radiation unit 21 excites a current on the fifth radiation unit 25, and the side of the fifth radiation unit 25 close to the second radiation unit 22 is kept at a distance from the second radiation unit 22 to form a fourth slot 29. The first radiation unit 21 excites a current with a phase difference of 90° on the fifth radiation unit 25 through the slot coupling feeding of the third slot 28, excites a circularly polarized wave, and further enhances the radiation efficiency of the circularly polarized radiation wave; the fifth radiation unit 25 is also used to adjust the impedance matching of the antenna and increase the impedance bandwidth of the antenna.

[0050] By adjusting the width of the first radiation unit 21, the width of the first slot 26 and the width of the third slot 28, the characteristic impedance of the feeding port 20 can be achieved to be 50Ω, which is convenient for impedance matching; optionally, the width of the third slot 28 is 0.5mm or 1mm, and the present application does not limit the specific width of the third slot 28.

[0051] Except for the fourth radiation unit 24, no other conductive units are arranged in the second slot 27, and no other conductive units are arranged in the fourth slot 29. The lengths of the second slot 27 and the fourth slot 29 along the length direction of the first radiation unit 21 are relatively large, and the second radiation unit 22 hardly couples out current to the third radiation unit 23 through the second slot 27, and hardly couples out current to the fifth radiation unit 25 through the fourth slot 29.

[0052] Alternatively, if Figure 7 As shown, a second reference floor 4 is provided on the lower surface of the dielectric substrate 1. The fifth radiation unit 25 is also the ground for the antenna located at the top of the dielectric substrate 1, and the second reference floor 4 is the ground for the antenna located at the bottom of the dielectric substrate 1. After the feeding port 20 is connected to the RF connector, the upper part of the RF connector is connected to the third radiation unit 23 and the fifth radiation unit 25, and the bottom of the RF connector is connected to the second reference floor 4, providing a return path for the feeding port 20. The size of the fifth radiation unit 25 is adjusted as needed. By adjusting the size, the radiation effect of the circularly polarized wave on the fifth radiation unit 25 can be further enhanced, and it is used to adjust the impedance matching and increase the impedance bandwidth of the antenna; as shown in FIG. Figure 7 and 8 As shown, it is only necessary to ensure that the length of the fifth radiation unit 25 along the length direction of the first radiation unit 21 is greater than the length of the second reference floor 4 along the length direction of the first radiation unit 21 .

[0053] Alternatively, if Figure 8 As shown, a second ground via 41 is provided on the dielectric substrate 1, and the second ground via 41 electrically connects the third radiation unit 23 and the second reference floor 4, and the fifth radiation unit 25 and the second reference floor 4, respectively. The second ground via 41 connects the ground at the top of the dielectric substrate 1 and the ground at the bottom of the dielectric substrate 1, and provides a return path for the feeding port 20. The second ground via 41 is a metal via, and the second ground via 41 passes through the dielectric substrate 1. The number of the second ground via 41 connecting the third radiation unit 23 and the second reference floor 4 and the second ground via 41 connecting the fifth radiation unit 25 and the second reference floor 4 can both be multiple, and can be arranged along the length direction of the dielectric substrate 1, can be arranged along the width direction of the dielectric substrate 1, or can be arranged in an array.

[0054] Optionally, in some embodiments, Figure 5 , 6 As shown in Figures 9 and 10, the end of the second radiating unit 22 away from the first side of the first radiating unit 21 (i.e., the end on the second side of the first radiating unit 21, in this embodiment, the right end of the second radiating unit 22) is bent toward the edge of the dielectric substrate 1 where the feeding port 20 is located. Preferably, the bent portion is parallel to the first radiating unit 21. The bent portion is used to adjust the impedance matching of the antenna and increase the impedance bandwidth of the antenna.

[0055] Optionally, the embodiments of the present application can enhance the radiation effect of the circularly polarized waves on the first radiation unit 21 and the second radiation unit 22 by adjusting the size of the first radiation unit 21 and the second radiation unit 22, can enhance the radiation effect of the circularly polarized waves on the third radiation unit 23 by adjusting the size of the third radiation unit 23, and can enhance the radiation effect of the circularly polarized waves on the fifth radiation unit 25 by adjusting the size of the fifth radiation unit 25, thereby enhancing the total radiation effect of the circularly polarized waves of the entire antenna radiation unit 2.

[0056] Optionally, the shape of each radiation unit in the embodiment of the present application is a simple shape such as a strip, rectangle, square, etc., or it can be various other shapes such as a trapezoid, rhombus, triangle, polygon, circle, etc. The present application does not limit the specific shape of each radiation unit.

[0057] Optionally, the dielectric substrate 1 of the embodiment of the present application is a PCB board, and the materials of the antenna radiation unit 2 and the reference floor can be metal materials or non-metallic conductive materials. Preferably, the antenna radiation unit 2 is a copper-plated layer printed on the upper surface of the dielectric substrate 1, and the feed port 20 and each radiation unit are formed by etching the gap, and the reference floor is a copper-plated layer printed on the lower surface of the dielectric substrate 1. By etching the gap, the interconnected radiation units are formed into an integrated structure, the connection is stable, and the radiation effect is good; Figure 3 As shown, by etching the first slit 26, the second slit 27 and other non-radiating units, the feed port 20 and each radiating unit are formed, and the first radiating unit 21 and the second radiating unit 22 are integrally formed, the connection is stable, and the radiation effect is good; as shown Figure 4 , 5 As shown in FIG. 6 , by etching the first slit 26, the second slit 27 and other non-radiating units, a feed port 20 and each radiating unit are formed, and the first radiating unit 21, the second radiating unit 22, the third radiating unit 23 and the fourth radiating unit 24 are integrally formed, with stable connection and good radiation effect; Figure 7 , 8 As shown in FIG9 , a feed port 20 and each radiation unit are formed by etching the first slit 26, the second slit 27, the third slit 28, the fourth slit 29 and other non-radiation unit locations, and the first radiation unit 21, the second radiation unit 22, the third radiation unit 23 and the fourth radiation unit 24 are integrally formed, with stable connection and good radiation effect.

[0058] Fig.10 is a time distribution diagram of the surface current of the third radiation unit in the embodiment of the present application, Fig.10 The clockwise time is 0 cycle, 1 / 4 cycle, 1 / 2 cycle and 3 / 4 cycle respectively. Fig.10It can be clearly seen that the current on the third radiation unit 23 rotates over time, and is right-handed, so that circularly polarized electromagnetic waves can be radiated. This shows that the antenna of the present application can radiate circularly polarized electromagnetic waves.

[0059] Fig.11 is a return loss curve diagram of the antenna of the embodiment of the present application, from Fig.11 It can be seen from the curve that the -10dB impedance frequency band of the antenna of the present application is 2.1GHz to 3.3GHz, covering the 2.4G ISM band (Industrial Scientific Medical Band), and the relative bandwidth reaches 44.4%, which is much higher than the bandwidth of ordinary microstrip antennas.

[0060] Fig.12 is an axial ratio curve diagram of the antenna of the embodiment of the present application, from Fig.12 It can be seen from the curve that the 3dB axial ratio frequency band of the antenna of the present application is 2.31GHz~2.6GHz, covering the 2.4G ISM frequency band, and the relative bandwidth reaches 11.8%.

[0061] Fig.13 is an input impedance curve of the antenna of the embodiment of the present application, from Fig.13 It can be seen from the curve that the antenna input impedance curve of the present application has a very flat characteristic in a very wide frequency band of 2.28 GHz to 3.22 GHz, and is very close to 50Ω, having a very good impedance matching effect.

[0062] Fig.14 is the radiation pattern of the antenna of the embodiment of the present application at a frequency of 2.44 GHz, Fig.14 In the figure, the upper circle line represents the right-hand circularly polarized wave radiating upward, and the lower circle line represents the left-hand circularly polarized wave radiating downward. The antenna gain reaches 2.35dB.

[0063] In summary, the present application can realize circular polarization radiation of the antenna, the upper hemisphere direction of the antenna is right-hand circular polarization radiation, and the lower hemisphere direction of the antenna is left-hand circular polarization radiation; at the same time, the antenna of the present application has a very wide bandwidth and a very gentle input impedance curve; after the size adjustment of the first radiation unit 21, the second radiation unit 22, the third radiation unit 23, the fourth radiation unit 24 and the fifth radiation unit 25, in a specific embodiment, the overall length and width of the antenna can be about 36mm*43mm, that is, the length and width of the dielectric substrate 1 can be about 36mm*43mm. Moreover, the antenna of the present application does not have a complex power division network, does not require a feeding network, does not require multiple layers of dielectric substrates to be stacked up and down, has a simple structure, is smaller in size, and the antenna can be thinner, and can be applied to terminal products with strict size requirements.

[0064] The present application also discloses an electronic device, comprising the antenna described in the above embodiment. The electronic device may be an electronic device in the fields of satellite navigation, ranging and positioning, vehicle-mounted communication, etc.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any at least one embodiment or example. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement and simple improvement made to the essential content of the present invention shall be included in the protection scope of the present invention.

Claims

1. An antenna, characterized in that: It comprises a dielectric substrate (1) and an antenna radiation unit (2), The antenna radiating unit (2) is arranged on the upper surface of the dielectric substrate (1), and the antenna radiating unit (2) comprises a feeding port (20), a first radiating unit (21), a second radiating unit (22) and a third radiating unit (23). The feeding port (20) is arranged at the edge of the upper surface of the dielectric substrate (1), a first end of the first radiating unit (21) is connected to the feeding port (20), the second radiating unit (22) is perpendicular to the first radiating unit (21) and is connected to the second end of the first radiating unit (21), and the first radiating unit (21) and the second radiating unit (22) are connected to each other. The radiation unit (22) is integrally formed, the third radiation unit (23) is arranged on a first side of the first radiation unit (21) and is located on a side of the second radiation unit (22) close to the feeding port (20), a first gap (26) is formed between the third radiation unit (23) and the first radiation unit (21), the first gap (26) is used for gap coupling feeding so that the first radiation unit (21) excites a current on the third radiation unit (23), and a second gap (27) is formed between the second radiation unit (22) and the third radiation unit (23).

2. The antenna according to claim 1, characterized in that The antenna radiation unit (2) further comprises a fourth radiation unit (24), wherein the fourth radiation unit (24) is arranged in the second slot (27) and connects the second radiation unit (22) and the third radiation unit (23).

3. The antenna according to claim 2, characterized in that: The fourth radiation unit (24) is perpendicular to the second radiation unit (22).

4. The antenna according to claim 1, characterized in that: An end portion of the second radiation unit (22) that is away from the first side of the first radiation unit (21) is bent towards an edge direction of the dielectric substrate (1) where the feeding port (20) is located.

5. The antenna according to any one of claims 1 to 4, characterized in that: A first reference floor (3) is provided on the lower surface of the dielectric substrate (1).

6. The antenna according to claim 5, characterized in that The dielectric substrate (1) is provided with a first ground via hole (31), and the first ground via hole (31) is electrically connected to the third radiation unit (23) and the first reference ground plane (3) respectively.

7. The antenna according to any one of claims 1 to 4, characterized in that: The antenna radiation unit (2) further comprises a fifth radiation unit (25), wherein the fifth radiation unit (25) is arranged on the second side of the first radiation unit (21) and is located on the side of the second radiation unit (22) close to the feeding port (20), the second side being opposite to the first side, the fifth radiation unit (25) and the first radiation unit (21) are spaced apart to form a third slot (28), the third slot (28) being used for slot coupling feeding so that the first radiation unit (21) excites a current on the fifth radiation unit (25), and the fifth radiation unit (25) and the second radiation unit (22) are spaced apart to form a fourth slot (29).

8. The antenna according to claim 7, characterized in that: A second reference floor (4) is provided on the lower surface of the dielectric substrate (1).

9. The antenna according to claim 8, characterized in that The dielectric substrate (1) is provided with a second ground via (41), and the second ground via (41) electrically connects the third radiation unit (23) and the second reference ground (4), and the fifth radiation unit (25) and the second reference ground (4).

10. An electronic device, characterized in that: The invention comprises the antenna according to any one of claims 1 to 9.

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