An antenna and aircraft

Abstract

The embodiment of the present application relates to the technical field of wireless communication, and discloses an antenna and an aircraft, the antenna is provided with at least three first parallel resonant units, and at least one first parallel resonant unit is arranged between a first radiation arm and a first extension, between a second radiation arm and a second extension, and between a third radiation arm and a third extension, the at least three first parallel resonant units present high impedance in a first frequency band and present low impedance in other frequency bands, therefore, the first radiation arm, the second radiation arm and the third radiation arm can jointly radiate electromagnetic signals of the first frequency band, and the first radiation arm, the second radiation arm, the third radiation arm, the first extension, the second extension and the third extension jointly radiate electromagnetic signals of a second frequency band.Through the above manner, the embodiment of the present application can realize the effect that one radiation arm can be used for radiating electromagnetic signals of multiple frequency bands, and is beneficial to the miniaturization design of the antenna.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to an antenna and an aircraft. Background Technology

[0002] Many aircraft are moving towards miniaturization, which places high demands on the miniaturization of antennas. In order for aircraft to perform missions in different environments, their antennas are generally designed to radiate electromagnetic signals in multiple frequency bands, thereby meeting the flight requirements of aircraft in different environments.

[0003] During the implementation of this invention, the inventors discovered that currently, one radiating arm in an antenna can only be used to radiate electromagnetic signals in one frequency band, resulting in a large number of radiating arms required for the antenna, which is not conducive to the miniaturization design of the antenna. Summary of the Invention

[0004] The main technical problem solved by the embodiments of the present invention is to provide an antenna and an aircraft that can achieve the effect of radiating electromagnetic signals of multiple frequency bands with a single radiating arm, which is beneficial to the miniaturization design of the antenna.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this embodiment of the invention is as follows: An antenna is provided, comprising a circuit board, a feed line, a first radiating component, a second radiating component, a first extension section, a second extension section, a third extension section, and at least three first parallel resonant units. The circuit board is provided with a first feed section and a second feed section. The feed line includes an inner conductor and an outer conductor, which are insulated from each other. The inner conductor is electrically connected to the first feed section, and the outer conductor is electrically connected to the second feed section. The first radiating component includes a first radiating arm, one end of which is electrically connected to the first feed section. The second radiating component includes a second radiating arm and a third radiating arm, one end of which and one end of the third radiating arm are both electrically connected to the second feed section. The first and second radiating components are used together to radiate a first frequency. The electromagnetic signal of the segment; one first parallel resonant unit is connected to the other end of the first radiating arm, another first parallel resonant unit is connected to the other end of the second radiating arm, and yet another first parallel resonant unit is connected to the other end of the third radiating arm; the first extension is connected to the end of one first parallel resonant unit away from the first radiating arm; the second extension is connected to the end of another first parallel resonant unit away from the second radiating arm; the third extension is connected to yet another first parallel resonant unit away from the third radiating arm; the at least three first parallel resonant units present high impedance in the first frequency band and low impedance in other frequency bands, so that the first radiating component, the second radiating component, the first extension, the second extension, and the third extension jointly radiate the electromagnetic signal of the second frequency band, the first frequency band and the second frequency band are different.

[0006] Optionally, the width of the first extension gradually increases along a first direction, which is parallel to the feed line.

[0007] Optionally, the antenna further includes a first stub and a second stub, the first stub and the second stub being located on both sides of the first extension, and one end of the first stub and one end of the second stub being connected to the first extension.

[0008] Optionally, the antenna further includes a third stub connected to the second extension, and the third stub is located on the side of the second extension away from the third extension.

[0009] Optionally, the antenna further includes a fourth stub connected to the third extension, and the fourth stub is located on the side of the third extension away from the second extension.

[0010] Optionally, the antenna further includes a fourth extension, a fifth extension, a sixth extension, and at least three second parallel resonant units. The fourth extension is connected to the end of the first extension away from the first radiating arm via one of the second parallel resonant units. The fifth extension is connected to the end of the second extension away from the second radiating arm via another of the second parallel resonant units. The sixth extension is connected to the end of the third extension away from the third radiating arm via yet another of the second parallel resonant units. The at least three second parallel resonant units present high impedance in the second frequency band and low impedance in other frequency bands, so that the first radiating component, the second radiating component, the first extension, the second extension, the third extension, the fourth extension, the fifth extension, and the sixth extension jointly radiate electromagnetic signals in the third frequency band, wherein the first frequency band, the second frequency band, and the third frequency band are all different.

[0011] Optionally, the antenna further includes a seventh extension, an eighth extension, a ninth extension, and at least three third parallel resonant units. The seventh extension is connected to the end of the fourth extension away from the first extension through one of the third parallel resonant units. The eighth extension is connected to the end of the fifth extension away from the second extension through another of the third parallel resonant units. The ninth extension is connected to the end of the sixth extension away from the third extension through yet another of the third parallel resonant units. The at least three third parallel resonant units present high impedance in the third frequency band and low impedance in other frequency bands, so that the first radiating component, the second radiating component, the first extension, the second extension, the third extension, the fourth extension, the fifth extension, the sixth extension, the seventh extension, the eighth extension, and the ninth extension all radiate electromagnetic signals in the fourth frequency band, where the first, second, third, and fourth frequency bands are all different.

[0012] Optionally, the antenna further includes a third radiating component and a fourth radiating component. The third radiating component includes a fourth radiating arm and a fifth radiating arm, one end of which and one end of which are connected to the first feed section. The fourth and fifth radiating arms are located on opposite sides of the first radiating arm. The fourth radiating component includes a sixth radiating arm and a seventh radiating arm, one end of which and one end of which are connected to the second feed section. The sixth radiating arm is located on the side of the second radiating arm away from the third radiating arm, and the seventh radiating arm is located on the side of the third radiating arm away from the second radiating arm. The third and fourth radiating components are used together to radiate electromagnetic signals in a fifth frequency band, which is different from the first and second frequency bands.

[0013] Optionally, the antenna further includes a fifth radiating component, a sixth radiating component, and four fourth parallel resonant units. The other ends of the fourth, fifth, sixth, and seventh radiating arms are each connected to one of the fourth parallel resonant units. The fifth radiating component includes an eighth and a ninth radiating arm. One end of the eighth radiating arm is connected to a fourth parallel resonant unit connected to the fourth radiating arm, and one end of the ninth radiating arm is connected to a fourth parallel resonant unit connected to the fifth radiating arm. The sixth radiating component includes a tenth and an eleventh radiating arm. One end of the tenth radiating arm is connected to a fourth parallel resonant unit connected to the sixth radiating arm, and one end of the eleventh radiating arm is connected to a fourth parallel resonant unit connected to the seventh radiating arm. The four fourth parallel resonant units exhibit high impedance in the fifth frequency band and low impedance in other frequency bands, so that the third, fourth, fifth, and sixth radiating components jointly radiate electromagnetic signals in the sixth frequency band, where the first, second, fifth, and sixth frequency bands are all different.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in the embodiments of the present invention is to provide an aircraft including the above-mentioned antenna.

[0015] The beneficial effects of this invention are as follows: Unlike the prior art, this invention provides at least three first parallel resonant units. At least one first parallel resonant unit is provided between the first radiating arm and the first extension portion, between the second radiating arm and the second extension portion, and between the third radiating arm and the third extension portion. Each first parallel resonant unit exhibits high impedance in the first frequency band and low impedance in other frequency bands. This allows the first, second, and third radiating arms to jointly radiate electromagnetic signals in the first frequency band, and the first, second, and third radiating arms, the first extension portion, the second extension portion, and the third extension portion to jointly radiate electromagnetic signals in the second frequency band. This achieves the effect of one radiating arm radiating electromagnetic signals in multiple frequency bands, which is beneficial for antenna miniaturization design. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in specific embodiments of the present invention or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the feeder structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an embodiment of the present invention having a first branch, a second branch, a third branch, and a fourth branch; Figure 5 This is a diagram of the S-(Scatter) parameters of the antennas in the first, second, third, and fourth frequency bands according to an embodiment of the present invention; Figure 6 These are S-parameter diagrams of the antennas in the fifth and sixth frequency bands according to embodiments of the present invention; Figure 7 This is the radiation pattern of the antenna in the first frequency band according to an embodiment of the present invention; Figure 8 This is the radiation pattern of the antenna in the second frequency band according to an embodiment of the present invention; Figure 9 This is the radiation pattern of the antenna in the third frequency band according to an embodiment of the present invention; Figure 10 This is the radiation pattern of the antenna in the fourth frequency band according to an embodiment of the present invention; Figure 11 This is the radiation pattern of the antenna in the fifth frequency band according to an embodiment of the present invention; Figure 12 This is the radiation pattern of the antenna in the sixth frequency band according to an embodiment of the present invention. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate orientation or positional relationships based on the orientation 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 device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0020] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Please see Figure 1 , Figure 2 and Figure 3The antenna 100 includes: a circuit board 11, a feed line 12, a first radiating component 13, a second radiating component 14, a first extension section 15, a second extension section 16, a third extension section 17, and at least three first parallel resonant units 18. A first feed section 111 and a second feed section 112 are disposed on a first surface of the circuit board 11, and the first feed section 111 and the second feed section 112 are separated from each other. The feed line 12 includes an inner conductor 121 and an outer conductor 122, the inner conductor 121 being located within the outer conductor 122, and an insulating layer (not labeled) is disposed between the inner conductor 121 and the outer conductor 122 to insulate them from each other. One end of the inner conductor 121 is electrically connected to the first feed section 111, and one end of the outer conductor 122 is electrically connected to the second feed section 112. The other ends of both the inner and outer conductors are used to connect to other components (not shown) besides the antenna 100 to enable signal transmission between the antenna 100 and other components. The first radiating assembly 13 includes a first radiating arm 131 disposed on the first surface of the circuit board 111. One end of the first radiating arm 131 is electrically connected to the first feed section 111. A first parallel resonant unit 18 is connected to the other end of the first radiating arm 131. A first extension section 15 is disposed on the first surface of the circuit board 111 and connected to the end of the first parallel resonant unit 18 opposite to the first radiating arm 131. The second radiating assembly 14 includes a second radiating arm 141 and a third radiating arm 142. One end of both the second radiating arm 141 and the third radiating arm 142 are electrically connected to the second feed section 112. Another first parallel resonant unit 18 is connected to the other end of the second radiating arm 141, and the second extension 16 is connected to the end of another first parallel resonant unit 18 opposite to the second radiating arm 141. Yet another first parallel resonant unit 18 is connected to the other end of the third radiating arm 142, and the third extension 17 is connected to the end of yet another first parallel resonant unit 18 opposite to the third radiating arm 142. The first radiating component 13, composed of the first radiating arm 131, and the second radiating component 14, composed of the second radiating arm 141 and the third radiating arm 142, are used together to radiate electromagnetic signals in the first frequency band. The first radiating arm 131 and the first extension 15, the second radiating arm 141 and the second extension 16, and the third radiating arm 142 and the third extension 17 are used together to radiate electromagnetic signals in the second frequency band. The frequency of the first frequency band is greater than or equal to 1.42 GHz and less than or equal to 1.45 GHz, and the frequency of the second frequency band is greater than or equal to 1.08 GHz and less than or equal to 1.09 GHz.The at least three first parallel resonant units 18 exhibit high impedance in the first frequency band and low impedance in other frequency bands. That is, when the antenna 100 operates in the first frequency band, the first radiating arm 131 and the first extension 15, the second radiating arm 141 and the second extension 16, and the third radiating arm 142 and the third extension 17 can be considered disconnected. Therefore, the first extension 15, the second extension 16, and the third extension 17 will not affect the first radiating arm 131, the second radiating arm 141, and the third radiating arm 142's connection to the antenna. The antenna 100 radiates electromagnetic signals in the first frequency band; when the antenna 100 operates in the second frequency band, the at least three first parallel resonant units 18 present low impedance. At this time, the first radiating arm 131 and the first extension 15 are turned on, the second radiating arm 141 and the second extension 16 are turned on, and the third radiating arm 142 and the third extension 17 are turned on, so that the first radiating arm 131 and the first extension 15, the second radiating arm 141 and the second extension 16, and the third radiating arm 142 and the third extension 17 can jointly radiate electromagnetic signals in the second frequency band.

[0022] In some embodiments, the projections of the second radiating arm 141 on the first surface of the circuit board 11 and the third radiating arm 142 on the first surface of the circuit board 11 are located on both sides of the projection of the feed line 12 on the first surface of the circuit board 11.

[0023] In some embodiments, along a first direction, the width of the first radiating arm 131 gradually increases, which is beneficial for adjusting the frequency of the electromagnetic signal radiated by the first radiating arm 131 to the first frequency band. The first direction is parallel to the feed line 12. Along the opposite direction of the first direction, the widths of the second radiating arm 141 and the third radiating arm 142 also gradually increase, which similarly is beneficial for adjusting the frequency of the electromagnetic signals radiated by the second radiating arm 141 and the third radiating arm 142 to the first frequency band.

[0024] In some embodiments, the second radiating arm 141 and the third radiating arm 142 are arranged symmetrically from left to right, and the second extension portion 16 and the third extension portion 17 are also arranged symmetrically from left to right. Here, "left and right" refers only to the left and right arrangement. Figure 1 From the perspective of [the Chinese context],

[0025] Furthermore, the lengths of the first radiating arm 131, the second radiating arm 141, and the third radiating arm 142 in the first direction are all greater than or equal to 1 / 8 of the wavelength of the electromagnetic signal in the first frequency band and less than or equal to 3 / 4 of the wavelength of the electromagnetic signal in the first frequency band. Specifically, calculated using the mid-frequency of the first frequency band, 1.435 GHz, the lengths of the first radiating arm 131, the second radiating arm 141, and the third radiating arm 142 in the first direction are all greater than or equal to 26.13 mm and less than or equal to 156.79 mm.

[0026] Further, along the first direction, the distances between the first extension portion 15 (away from the first radiating arm 131) and the first feed portion 111, the distances between the second extension portion 16 (away from the second radiating arm 141) and the second feed portion 112, and the distances between the third extension portion 17 (away from the third radiating arm 142) and the second feed portion 112 are all greater than or equal to 1 / 8 of the wavelength of the electromagnetic signal in the second frequency band and less than or equal to 3 / 4 of the wavelength of the electromagnetic signal in the second frequency band. Specifically, calculated using the mid-frequency of the second frequency band, 1.085 GHz, the distances between the first extension portion 15 (away from the first radiating arm 131) and the first feed portion 111, the distances between the second extension portion 16 (away from the second radiating arm 141) and the second feed portion 112, and the distances between the third extension portion 17 (away from the third radiating arm 142) and the second feed portion 112 are all greater than or equal to 34.56 mm and less than or equal to 207.37 mm.

[0027] Since the number of the first parallel resonant units 18 will affect the resonant frequency and bandwidth of the electromagnetic signals in the first and second frequency bands, preferably, the first radiating arm 131 and the first extension 15 are connected by one first parallel resonant unit 18, the second radiating arm 141 and the second extension 16 are connected by two first parallel resonant units 18, and the third radiating arm 142 and the third extension 17 are connected by two first parallel resonant units 18.

[0028] Preferably, the inductance of each of the at least three first parallel resonant units 18 is 4.1nH and the capacitance is 3pF, so that the at least three first parallel resonant units 18 exhibit high impedance in the first frequency band and low impedance in other frequency bands.

[0029] In some embodiments, please refer to Figure 4The antenna 100 further includes a first stub 19 and a second stub 20, which are located on opposite sides of the first extension portion 15, and one end of the first stub 19 and one end of the second stub 20 are both connected to the first extension portion 15. The first stub 19 and the second stub 20 can adjust the bandwidth of the electromagnetic signal in the second frequency band.

[0030] In some embodiments, please continue reading Figure 4 The antenna 100 further includes a third branch 21 and a fourth branch 22. The third branch 21 is connected to the second extension 16 and is located on the side of the second extension 16 away from the third extension 17. The fourth branch 22 is connected to the third extension 17 and is located on the side of the third extension 17 away from the second extension 16. By setting the third branch 21 and the fourth branch 22, the bandwidth of the electromagnetic signal in the second frequency band can be further adjusted.

[0031] In some embodiments, please refer to Figure 1The antenna 100 further includes a fourth extension 23, a fifth extension 24, a sixth extension 25, and at least three second parallel resonant units 26. The fourth extension 23 is connected to the end of the first extension 15 away from the first radiating arm 131 via one of the second parallel resonant units 26. The fifth extension 24 is connected to the end of the second extension 16 away from the second radiating arm 141 via another second parallel resonant unit 26. The sixth extension 25 is connected to the end of the third extension 17 away from the third radiating arm 142 via yet another second parallel resonant unit 26. The at least three second parallel resonant units 26 exhibit high impedance in the second frequency band and low impedance in other frequency bands, so that the first radiating component 13, the second radiating component 14, the first extension 15, the second extension 16, the third extension 17, the fourth extension 23, the fifth extension 24, and the sixth extension 25 can jointly radiate electromagnetic signals in the third frequency band. In other words, when the antenna 100 operates in the second frequency band, because the at least three second parallel resonant units 26 exhibit high impedance in the second frequency band, the connections between the first extension 15 and the fourth extension 23, between the second extension 16 and the fifth extension 24, and between the third extension 17 and the sixth extension 25 are all disconnected. In reality, only the first radiating arm 131, the first extension 15, the second radiating arm 141, the second extension 16, the third radiating arm 142, and the third extension 17 actually participate in radiating electromagnetic signals. When operating in the third frequency band, since the at least three second parallel resonant units 26 exhibit low impedance, the first extension section 15 and the fourth extension section 23, the second extension section 16 and the fifth extension section 24, and the third extension section 17 and the sixth extension section 25 are all in a conductive state. Therefore, the first radiating arm 131, the second radiating arm 141, the third radiating arm 142, the first extension section 15, the second extension section 16, the third extension section 17, the fourth extension section 23, the fifth extension section 24, and the sixth extension section 25 can jointly radiate electromagnetic signals in the third frequency band. The frequency of the third frequency band is greater than or equal to 0.90 GHz and less than or equal to 0.93 GHz.

[0032] In some embodiments, the fifth extension portion 24 and the sixth extension portion 25 are arranged symmetrically from left to right; here, "left and right" refers only to their orientation relative to each other. Figure 1 From the perspective of [the Chinese context],

[0033] Further, along the first direction, the distances between the end of the fourth extension 23 away from the first radiating arm 131 and the first feed section 111, the distances between the end of the fifth extension 24 away from the second radiating arm 141 and the second feed section 112, and the distances between the end of the sixth extension 25 away from the third radiating arm 142 and the second feed section 112 are all greater than or equal to 1 / 8 of the wavelength of the electromagnetic signal in the third frequency band and less than or equal to 3 / 4 of the wavelength of the electromagnetic signal in the third frequency band. Specifically, calculated using the mid-frequency of the third frequency band, 0.915 GHz, the distances between the end of the fourth extension 23 away from the first radiating arm 131 and the first feed section 111, the distances between the end of the fifth extension 24 away from the second radiating arm 141 and the second feed section 112, and the distances between the end of the sixth extension 25 away from the third radiating arm 142 and the second feed section 112 are all greater than or equal to 40.98 mm and less than or equal to 245.90 mm.

[0034] Since the number of the second parallel resonant units 26 affects the resonant frequency and bandwidth of the electromagnetic signals in the second and third frequency bands, preferably, the first extension section 15 and the fourth extension section 23 are connected by three second parallel resonant units 26, the second extension section 16 and the fifth extension section 24 are connected by two second parallel resonant units 26, and the third extension section 17 and the sixth extension section 25 are connected by two second parallel resonant units 26.

[0035] Preferably, the inductance of the at least three second parallel resonant units 26 is 4.7nH and the capacitance is 4.5pF, so that the at least three second parallel resonant units 26 have high impedance in the second frequency band and low impedance in other frequency bands.

[0036] In some embodiments, the antenna 100 further includes a seventh extension 27, an eighth extension 28, a ninth extension 29, and at least three third parallel resonant units 30. The seventh extension 27 is connected to the end of the fourth extension 23 opposite to the first extension 15 via one of the third parallel resonant units 30. The eighth extension 28 is connected to the end of the fifth extension 24 opposite to the second extension via another third parallel resonant unit 30. The ninth extension 29 is connected to the end of the sixth extension 25 opposite to the third extension 17 via yet another third parallel resonant unit 30, and the at least three third parallel resonant units 30 present high impedance in the third frequency band and low impedance in other frequency bands, so that the first radiating component 13, the second radiating component 14, the first extension 15, the second extension 16, the third extension 17, the fourth extension 23, the fifth extension 24, the sixth extension 25, the seventh extension 27, the eighth extension 28, and the ninth extension 29 can jointly radiate electromagnetic signals in the fourth frequency band. In other words, when the antenna 100 operates in the third frequency band, since the at least three third parallel resonant units 30 exhibit high impedance in the third frequency band, the seventh extension 27 and the fourth extension 23, the eighth extension 28 and the fifth extension 24, and the ninth extension 29 and the sixth extension 25 are all in a disconnected state. In reality, only the first radiating arm 131, the first extension 15, the fourth extension 23, the second radiating arm 141, the second extension 16, the fifth extension 24, the third radiating arm 142, the third extension 17, and the sixth extension 25 participate in radiating electromagnetic signals. When operating in the fourth frequency band, since the at least three third parallel resonant units 30 exhibit low impedance, the seventh extension 27 and the fourth extension 23, the eighth extension 28 and the fifth extension 24, and the ninth extension 29 and the sixth extension 25 are all in a conductive state. Therefore, the first radiating arm 131, the second radiating arm 141, the third radiating arm 142, the first extension 15, the second extension 16, the third extension 17, the fourth extension 23, the fifth extension 24, the sixth extension 25, the seventh extension 27, the eighth extension 28, and the ninth extension 29 can jointly radiate electromagnetic signals in the fourth frequency band. The frequency of the fourth frequency band is greater than or equal to 0.80 GHz and less than or equal to 0.86 GHz.

[0037] In some embodiments, the eighth extension portion 28 and the ninth extension portion 29 are arranged symmetrically from left to right; here, "left and right" refers only to their respective orientations. Figure 1 From the perspective of [the Chinese context],

[0038] Further, along the first direction, the distances between the seventh extension 27 (away from the first radiating arm 131) and the first feed section 111, the distances between the eighth extension 28 (away from the second radiating arm 141) and the second feed section 112, and the distances between the ninth extension 29 (away from the third radiating arm 142) and the second feed section 112 are all greater than or equal to 1 / 8 of the wavelength of the electromagnetic signal in the fourth frequency band and less than or equal to 3 / 4 of the wavelength of the electromagnetic signal in the fourth frequency band. Specifically, calculated using the mid-frequency of the fourth frequency band (0.83 GHz), the distances between the seventh extension 27 (away from the first radiating arm 131) and the first feed section 111, the eighth extension 28 (away from the second radiating arm 141) and the second feed section 112, and the ninth extension 29 (away from the third radiating arm 142) and the second feed section 112 are all greater than or equal to 45.18 mm and less than or equal to 271.08 mm.

[0039] Since the number of the third parallel resonant units 30 affects the resonant frequency and bandwidth of the electromagnetic signals in the third and fourth frequency bands, preferably, the seventh extension 27 and the fourth extension 23 are connected by three third parallel resonant units 30, the eighth extension 28 and the fifth extension 24 are connected by two third parallel resonant units 30, and the ninth extension 29 and the sixth extension 25 are connected by two third parallel resonant units 30.

[0040] Preferably, the inductance of each of the at least three third parallel resonant units 30 is 5.1nH and the capacitance is 6pF, so that the at least three third parallel resonant units 30 exhibit high impedance in the third frequency band and low impedance in other frequency bands.

[0041] In some embodiments, the antenna 100 further includes a third radiating component 31 and a fourth radiating component 32. The third radiating component 31 includes a fourth radiating arm 311 and a fifth radiating arm 312, one end of the fourth radiating arm 311 and one end of the fifth radiating arm 312 are both connected to the first feed section 111, and the fourth radiating arm 311 and the fifth radiating arm 312 are respectively located on both sides of the first radiating arm 131. The fourth radiating component 32 includes a sixth radiating arm 321 and a seventh radiating arm 322. One end of the sixth radiating arm 321 and one end of the seventh radiating arm 322 are both connected to the second feed section 112. The sixth radiating arm 321 is located on the side of the second radiating arm 141 opposite to the third radiating arm 142, and the seventh radiating arm 322 is located on the side of the third radiating arm 142 opposite to the second radiating arm 141. The third radiating component 31, composed of the fourth radiating arm 311 and the fifth radiating arm 312, and the fourth radiating component 32, composed of the sixth radiating arm 321 and the seventh radiating arm 322, are used together to radiate electromagnetic signals in the fifth frequency band. The frequency of the electromagnetic signals in the fifth frequency band is greater than or equal to 5.10 GHz and less than or equal to 6.44 GHz.

[0042] In some embodiments, the fourth radiation arm 311 and the fifth radiation arm 312 are arranged symmetrically from left to right, the sixth radiation arm 321 and the seventh radiation arm 322 are also arranged symmetrically from left to right, and the third radiation component 31 and the fourth radiation component 32 are arranged symmetrically from top to bottom. Here, "left and right" and "top and bottom" refer only to... Figure 1 From the perspective of [the Chinese context],

[0043] Furthermore, along the first direction, the lengths of the fourth radiating arm 311, the fifth radiating arm 312, the sixth radiating arm 321, and the seventh radiating arm 322 are all greater than or equal to 1 / 8 of the wavelength of the electromagnetic signal in the fifth frequency band and less than or equal to 3 / 4 of the wavelength of the electromagnetic signal in the fifth frequency band. Specifically, calculated using the mid-frequency of the fifth frequency band, 5.77 GHz, the lengths of the fourth radiating arm 311, the fifth radiating arm 312, the sixth radiating arm 321, and the seventh radiating arm 322 are all greater than or equal to 6.50 mm and less than or equal to 39.00 mm.

[0044] In some embodiments, the antenna 100 further includes a fifth radiating component 33, a sixth radiating component 34, and four fourth parallel resonant units 35. The other ends of the fourth radiating arm 311, the fifth radiating arm 312, the sixth radiating arm 321, and the seventh radiating arm 322 are respectively connected to one of the fourth parallel resonant units 35. The fifth radiating component 33 includes an eighth radiating arm 331 and a ninth radiating arm 332. One end of the eighth radiating arm 331 is connected to the fourth parallel resonant unit 35 connected to the fourth radiating arm 311, and one end of the ninth radiating arm 332 is connected to the fourth parallel resonant unit 35 connected to the fifth radiating arm 312. The sixth radiating component 34 includes a tenth radiating arm 341 and an eleventh radiating arm 342. One end of the tenth radiating arm 341 is connected to the fourth parallel resonant unit 35 connected to the sixth radiating arm 321, and one end of the eleventh radiating arm 342 is connected to the fourth parallel resonant unit 35 connected to the seventh radiating arm 322. The four fourth parallel resonant units 35 present high impedance in the fifth frequency band and low impedance in other frequency bands, so that the third radiating component 31, the fourth radiating component 32, the fifth radiating component 33, and the sixth radiating component 34 can jointly radiate electromagnetic signals in the sixth frequency band. That is, when the antenna 100 operates in the fifth frequency band, due to the high impedance of the four fourth parallel resonant units 35, the fourth radiating arm 311 is disconnected from the eighth radiating arm 331, the fifth radiating arm 312 from the ninth radiating arm 332, the sixth radiating arm 321 from the tenth radiating arm 341, and the seventh radiating arm 322 from the eleventh radiating arm 342. In reality, only the fourth radiating arm 311, the fifth radiating arm 312, the sixth radiating arm 321, and the seventh radiating arm 322 participate in radiating electromagnetic signals. When the antenna 100 operates in the sixth frequency band... Because the four fourth parallel resonant units 35 exhibit low impedance, the fourth radiating arm 311 and the eighth radiating arm 331, the fifth radiating arm 312 and the ninth radiating arm 332, the sixth radiating arm 321 and the tenth radiating arm 341, and the seventh radiating arm 322 and the eleventh radiating arm 342 are in a conductive state. Therefore, the fourth radiating arm 311, the fifth radiating arm 312, the sixth radiating arm 321, the seventh radiating arm 322, the eighth radiating arm 331, the ninth radiating arm 332, the tenth radiating arm 341, and the eleventh radiating arm 342 can jointly radiate electromagnetic signals in the sixth frequency band. The frequency of the sixth frequency band is greater than or equal to 2.37 GHz and less than or equal to 2.56 GHz.

[0045] Preferably, the inductance of each of the four fourth parallel resonant units 35 is 1nH and the capacitance is 0.9pF, so that the four fourth parallel resonant units 35 exhibit high impedance in the fifth frequency band and low impedance in other frequency bands.

[0046] In some embodiments, the eighth radiation arm 331 and the ninth radiation arm 332 are arranged symmetrically from left to right, the tenth radiation arm 341 and the eleventh radiation arm 342 are also arranged symmetrically from left to right, and the fifth radiation component 33 and the sixth radiation component 34 are arranged symmetrically from top to bottom. Here, "left and right" and "top and bottom" refer only to... Figure 1 From the perspective of [the Chinese context],

[0047] Further, along the first direction, the distance between the end of the eighth radiating arm 331 away from the fourth radiating arm 311 and the end of the fourth radiating arm 311 away from the eighth radiating arm 331 is greater than or equal to 1 / 8 of the wavelength of the electromagnetic signal in the sixth frequency band and less than or equal to 3 / 4 of the wavelength of the electromagnetic signal in the sixth frequency band. Specifically, calculated using the mid-frequency of the sixth frequency band, 2.465 GHz, the distance between the end of the eighth radiating arm 331 away from the fourth radiating arm 311 and the end of the fourth radiating arm 311 away from the eighth radiating arm 331 is greater than or equal to 15.21 mm and less than or equal to 91.28 mm.

[0048] In some embodiments, the first parallel resonant unit 18, the second parallel resonant unit 26, the third parallel resonant unit 30, and the fourth parallel resonant unit 35 are all formed by inductors and capacitors connected in parallel.

[0049] In some embodiments, the gaps between the first radiating arm 131 and the first extension 15, the gaps between the second radiating arm 141 and the second extension 16, the gaps between the third radiating arm 142 and the third extension 17, the gaps between the fourth extension 23 and the first extension 15, the gaps between the fifth extension 24 and the second extension 16, the gaps between the sixth extension 25 and the third extension 17, the gaps between the seventh extension 27 and the fourth extension 23, the gaps between the eighth extension 28 and the fifth extension 24, the gaps between the ninth extension 29 and the sixth extension 25, the gaps between the fourth radiating arm 311 and the eighth radiating arm 331, the gaps between the fifth radiating arm 312 and the ninth radiating arm 332, the gaps between the sixth radiating arm 321 and the tenth radiating arm 341, and the gaps between the seventh radiating arm 322 and the eleventh radiating arm 342 are all 1 mm. Of course, it is understandable that in order to tune the frequency of the electromagnetic signal radiated by the antenna 100 to the required frequency band, the above-mentioned gap value can be adjusted according to actual needs, for example, it can be adjusted to 0.8, 1.2, or 1.5 mm.

[0050] To help readers better understand the concept of this invention, the following experimental evidence is provided: 1) For the first frequency band, the antenna 100 connects the first radiating arm 131 to the first feed section 111, and electrically connects the second radiating arm 141 and the third radiating arm 142 to the second feed section 112, so that the first radiating arm 131, the second radiating arm 141, and the third radiating arm 142 can jointly radiate electromagnetic signals of the first frequency band. Figure 5 It can be seen that the antenna 100 has a good radiation effect on electromagnetic signals in the 1.42GHz~1.45GHz frequency band, and at the same time, combined with Figure 7 , Figure 7 In this context, E-plane represents the directivity on a plane parallel to the first surface of the circuit board 11, and H-plane represents the directivity on a plane perpendicular to the first direction. It can be seen that the antenna 100 has omnidirectional electromagnetic signals of the first frequency band on a plane perpendicular to the first direction.

[0051] 2) For the second frequency band, the antenna 100 is provided with a first extension 15, a second extension 16, and a third extension 17. The first extension 15 and the first radiating arm 131, the second extension 16 and the second radiating arm 141, and the third extension 17 and the third radiating arm 142 are respectively connected by at least one first parallel resonant unit 18. The first parallel resonant unit 18 presents high impedance in the first frequency band; therefore, the first extension 15, the second extension 16, and the third extension 17 will not affect the electromagnetic signal in the first frequency band. The first parallel resonant unit 18 presents low impedance in other frequency bands, allowing the first radiating arm 131, the second radiating arm 141, the third radiating arm 142, the first extension 15, the second extension 16, and the third extension 17 to jointly radiate the electromagnetic signal in the second frequency band. Figure 5 It can be seen that the antenna 100 has a good radiation effect on electromagnetic signals in the frequency band of 1.08GHz~1.09GHz, and at the same time, combined with Figure 8 , Figure 8 In this context, E-plane represents the directivity on a plane parallel to the first surface of the circuit board 11, and H-plane represents the directivity on a plane perpendicular to the first direction. It can be seen that the antenna 100 has omnidirectional electromagnetic signals of the second frequency band on a plane perpendicular to the first direction.

[0052] 3) For the third frequency band, the antenna 100 is provided with a fourth extension section 23, a fifth extension section 24, and a sixth extension section 25. The first extension section 15 and the fourth extension section 23, the second extension section 16 and the fifth extension section 24, and the third extension section 17 and the sixth extension section 25 are respectively connected by at least one second parallel resonant unit 26. The second parallel resonant unit 26 exhibits high impedance in the second frequency band; therefore, the fourth extension section 23, the fifth extension section 24, and the sixth extension section 25 will not affect the electromagnetic signals in the second frequency band. The second parallel resonant unit 26 exhibits low impedance in other frequency bands, allowing the first radiating arm 131, the second radiating arm 141, the third radiating arm 142, the first extension section 15, the second extension section 16, the third extension section 17, the fourth extension section 23, the fifth extension section 24, and the sixth extension section 25 to jointly radiate the electromagnetic signals of the third frequency band. Figure 5 It can be seen that the antenna 100 has a good radiation effect on electromagnetic signals in the frequency band of 0.90GHz~0.93GHz, and at the same time, combined with Figure 9 , Figure 9 In this context, E-plane represents the directivity on a plane parallel to the first surface of the circuit board 11, and H-plane represents the directivity on a plane perpendicular to the first direction. It can be seen that the antenna 100 has omnidirectional electromagnetic signals of the third frequency band on a plane perpendicular to the first direction.

[0053] 4) For the fourth frequency band, the antenna 100 is provided with a seventh extension 27, an eighth extension 28, and a ninth extension 29. The fourth extension 23 and the seventh extension 27, the fifth extension 24 and the eighth extension 28, and the sixth extension 25 and the ninth extension 29 are respectively connected by at least one third parallel resonant unit 30. The third parallel resonant unit 30 exhibits high impedance in the third frequency band; therefore, the seventh extension 27, the eighth extension 28, and the ninth extension 29 will not affect the electromagnetic signals in the third frequency band. The third parallel resonant unit 30 exhibits low impedance in other frequency bands, allowing the first radiating arm 131, the second radiating arm 141, the third radiating arm 142, the first extension 15, the second extension 16, the third extension 17, the fourth extension 23, the fifth extension 24, the sixth extension 25, the seventh extension 27, the eighth extension 28, and the ninth extension 29 to jointly radiate the electromagnetic signals of the fourth frequency band. Figure 5 It can be seen that the antenna 100 has a good radiation effect on electromagnetic signals in the frequency band of 0.80GHz~0.86GHz, and at the same time, combined with Figure 10 , Figure 10In this context, E-plane represents the directivity on a plane parallel to the first surface of the circuit board 11, and H-plane represents the directivity on a plane perpendicular to the first direction. It can be seen that the antenna 100 has omnidirectional electromagnetic signals of the fourth frequency band on a plane perpendicular to the first direction.

[0054] 5) For the fifth frequency band, the antenna 100 is configured with a fourth radiating arm 311, a fifth radiating arm 312, a sixth radiating arm 321, and a seventh radiating arm 322. The fourth and fifth radiating arms 311 and 312 are both connected to the first feed unit 111, and are located on opposite sides of the first radiating arm 131. The sixth and seventh radiating arms 321 and 322 are both connected to the second feed unit 112. The sixth radiating arm 321 is located on the side of the second radiating arm 141 facing away from the third radiating arm 142, and the seventh radiating arm 322 is located on the side of the third radiating arm 142 facing away from the second radiating arm 141. This allows the fourth, fifth, sixth, and seventh radiating arms 321 to jointly radiate electromagnetic signals of the fifth frequency band. Figure 6 It can be seen that the antenna 100 has a good radiation effect on electromagnetic signals in the frequency band of 5.10GHz~6.44GHz, and at the same time, combined with Figure 11 , Figure 11 In this context, E-plane represents the directivity on a plane parallel to the first surface of the circuit board 11, and H-plane represents the directivity on a plane perpendicular to the first direction. It can be seen that the antenna 100 has omnidirectional electromagnetic signals of the fifth frequency band on a plane perpendicular to the first direction.

[0055] 6) For the sixth frequency band, the antenna 100 is provided with an eighth radiating arm 331, a ninth radiating arm 332, a tenth radiating arm 341 and an eleventh radiating arm 342. The eighth radiating arm 331 and the fourth radiating arm 311, the ninth radiating arm 332 and the fifth radiating arm 312, the tenth radiating arm 341 and the sixth radiating arm 321, and the eleventh radiating arm 342 and the seventh radiating arm 322 are respectively connected by a fourth parallel resonant unit 35. The fourth parallel resonant unit 35 exhibits high impedance in the fifth frequency band, therefore the eighth, ninth, tenth, and eleventh radiating arms 331, 332, 341, and 342 will not affect the electromagnetic signal in the fifth frequency band. Conversely, the fourth parallel resonant unit 35 exhibits low impedance in other frequency bands; therefore, the fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh radiating arms 311, 312, 321, 322, 331, 332, 341, and 342 can collectively radiate the electromagnetic signal in the sixth frequency band. Figure 6It can be seen that the antenna 100 has a good radiation effect on electromagnetic signals in the frequency band of 2.37GHz~2.56GHz, and at the same time, combined with Figure 12 , Figure 12 In this context, E-plane represents the directivity on a plane parallel to the first surface of the circuit board 11, and H-plane represents the directivity on a plane perpendicular to the first direction. It can be seen that the antenna 100 has omnidirectional electromagnetic signals of the sixth frequency band on a plane perpendicular to the first direction.

[0056] In this embodiment of the invention, by setting at least three first parallel resonant units 18, at least one first parallel resonant unit 18 is respectively set between the first radiating arm 131 and the first extension 15, between the second radiating arm 141 and the second extension 16, and between the third radiating arm 142 and the third extension 17. The first parallel resonant unit 18 presents high impedance in the first frequency band and low impedance in other frequency bands, so that the first radiating arm 131, the second radiating arm 141, and the third radiating arm 142 can jointly radiate electromagnetic signals in the first frequency band, and the first radiating arm 131, the second radiating arm 141, the third radiating arm 142, the first extension 15, the second extension 16, and the third extension 17 can jointly radiate electromagnetic signals in the second frequency band. This achieves the effect that one radiating arm can be used to radiate electromagnetic signals in multiple frequency bands, which is beneficial to the miniaturization design of the antenna 100.

[0057] The present invention also provides an embodiment of an aircraft, which includes the antenna 100 described above. For the specific structure and function of the antenna 100, please refer to the above embodiments, which will not be repeated here.

[0058] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An antenna, characterized in that, include: The circuit board is provided with a first power supply section and a second power supply section; The feeder includes an inner conductor and an outer conductor, which are insulated from each other. The inner conductor is electrically connected to the first feed section, and the outer conductor is electrically connected to the second feed section. The first radiating component includes a first radiating arm, one end of which is electrically connected to the first feeding part. The second radiation component includes a second radiation arm and a third radiation arm. One end of the second radiation arm and one end of the third radiation arm are electrically connected to the second feed section. The first radiation component and the second radiation component are used together to radiate electromagnetic signals in the first frequency band. At least three first parallel resonant units, one of which is connected to the other end of the first radiating arm, another of which is connected to the other end of the second radiating arm, and yet another of which is connected to the other end of the third radiating arm; The first extension section is connected to one end of the first parallel resonant unit that is away from the first radiating arm; The second extension is connected to one end of another first parallel resonant unit that is away from the second radiating arm; The third extension section is connected to one end of another first parallel resonant unit that is away from the third radiating arm; The at least three first parallel resonant units present high impedance in the first frequency band and low impedance in other frequency bands, so that the first radiating component, the second radiating component, the first extension, the second extension and the third extension jointly radiate electromagnetic signals in the second frequency band, and the first frequency band and the second frequency band are different.

2. The antenna according to claim 1, characterized in that, Along a first direction, the width of the first extension gradually increases, and the first direction is parallel to the feed line.

3. The antenna according to claim 1, characterized in that, The antenna further includes a first stub and a second stub, which are located on both sides of the first extension portion, and one end of the first stub and one end of the second stub are both connected to the first extension portion.

4. The antenna according to claim 1, characterized in that, The antenna further includes a third stub, which is connected to the second extension and is located on the side of the second extension away from the third extension.

5. The antenna according to claim 1, characterized in that, The antenna further includes a fourth stub, which is connected to the third extension and is located on the side of the third extension away from the second extension.

6. The antenna according to claim 1, characterized in that, The antenna further includes a fourth extension, a fifth extension, a sixth extension, and at least three second parallel resonant units. The fourth extension is connected to the end of the first extension away from the first radiating arm via one of the second parallel resonant units. The fifth extension is connected to the end of the second extension away from the second radiating arm via another of the second parallel resonant units. The sixth extension is connected to the end of the third extension away from the third radiating arm via yet another of the second parallel resonant units. The at least three second parallel resonant units exhibit high impedance in the second frequency band and low impedance in other frequency bands, so that the first radiating component, the second radiating component, the first extension, the second extension, the third extension, the fourth extension, the fifth extension, and the sixth extension all radiate electromagnetic signals in the third frequency band, and the first, second, and third frequency bands are all different.

7. The antenna according to claim 6, characterized in that, The antenna further includes a seventh extension, an eighth extension, a ninth extension, and at least three third parallel resonant units. The seventh extension is connected to the end of the fourth extension away from the first extension through one of the third parallel resonant units. The eighth extension is connected to the end of the fifth extension away from the second extension through another of the third parallel resonant units. The ninth extension is connected to the end of the sixth extension away from the third extension through yet another of the third parallel resonant units. The at least three third parallel resonant units present high impedance in the third frequency band and low impedance in other frequency bands, so that the first radiating component, the second radiating component, the first extension, the second extension, the third extension, the fourth extension, the fifth extension, the sixth extension, the seventh extension, the eighth extension, and the ninth extension all radiate electromagnetic signals in the fourth frequency band. The first frequency band, the second frequency band, the third frequency band, and the fourth frequency band are all different.

8. The antenna according to claim 1, characterized in that, The antenna further includes a third radiating component and a fourth radiating component. The third radiating component includes a fourth radiating arm and a fifth radiating arm. One end of the fourth radiating arm and one end of the fifth radiating arm are both connected to the first feed section, and the fourth radiating arm and the fifth radiating arm are respectively located on both sides of the first radiating arm. The fourth radiating component includes a sixth radiating arm and a seventh radiating arm. One end of the sixth radiating arm and one end of the seventh radiating arm are both connected to the second feed section. The sixth radiating arm is located on the side of the second radiating arm away from the third radiating arm, and the seventh radiating arm is located on the side of the third radiating arm away from the second radiating arm. The third radiating component and the fourth radiating component are used together to radiate electromagnetic signals in a fifth frequency band, which is different from the first frequency band and the second frequency band.

9. The antenna according to claim 8, characterized in that, The antenna also includes a fifth radiating component, a sixth radiating component, and four fourth parallel resonant units. The other end of the fourth radiating arm, the other end of the fifth radiating arm, the other end of the sixth radiating arm, and the other end of the seventh radiating arm are respectively connected to one of the fourth parallel resonant units. The fifth radiation component includes an eighth radiation arm and a ninth radiation arm. One end of the eighth radiation arm is connected to a fourth parallel resonant unit connected to the fourth radiation arm, and one end of the ninth radiation arm is connected to a fourth parallel resonant unit connected to the fifth radiation arm. The sixth radiating component includes a tenth radiating arm and an eleventh radiating arm. One end of the tenth radiating arm is connected to a fourth parallel resonant unit connected to the sixth radiating arm, and one end of the eleventh radiating arm is connected to a fourth parallel resonant unit connected to the seventh radiating arm. The four fourth parallel resonant units exhibit high impedance in the fifth frequency band and low impedance in other frequency bands, so that the third, fourth, fifth, and sixth radiating components jointly radiate electromagnetic signals in the sixth frequency band. The first, second, fifth, and sixth frequency bands are all different.

10. An aircraft, characterized in that, Including the antenna as described in any one of claims 1-9.

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