Antenna module, vehicle and base station

Abstract

The invention provides an antenna module, a vehicle and a base station, and the antenna module comprises a metal plate; the metal body is arranged on the metal plate, the metal body comprises a first gap and a second gap which are arranged in a crossed mode and form a set angle, and the first gap and the second gap each comprise a transverse opening penetrating out of the metal body in the thickness direction of the metal plate and a longitudinal opening penetrating out of the metal body in the plane direction of the metal plate. The length of the transverse opening and the length of the longitudinal opening are in a set proportion; and the excitation source is used for exciting the first gap and the second gap so as to radiate circularly polarized waves. According to the antenna module, the vehicle and the base station, the radiation intensity of the circularly polarized wave is determined by the length of the transverse opening, and the coverage range of the circularly polarized wave is determined by the length of the longitudinal opening, so that the radiation intensity of the circularly polarized wave is determined by setting the proportion between the length of the transverse opening and the length of the longitudinal opening; the requirement for radiation intensity is met, and meanwhile wave beam coverage in a wide range can be achieved under the small size.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to an antenna module, a vehicle, and a base station. Background Art

[0002] With the rapid development of communication technology, there are more and more types of antennas. However, due to structural limitations, some antennas cannot achieve a wide range of beam coverage while ensuring a certain radiation intensity, which affects the performance of the antenna and cannot meet communication needs. Summary of the Invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an object of the present disclosure is to provide an antenna module, a vehicle, and a base station.

[0005] To achieve the above-mentioned purpose, the first aspect of the present disclosure provides an antenna module, comprising: a metal plate; a metal body, the metal body being arranged on the metal plate, and the metal body comprising: a first slot and a second slot being arranged crosswise and at a set angle, the first slot and the second slot both comprising: a transverse opening passing through the metal body along the thickness direction of the metal plate and a longitudinal opening passing through the metal body along the plane direction of the metal plate, the length of the transverse opening and the length of the longitudinal opening being in a set ratio; an excitation source, the excitation end of the excitation source being arranged in the first slot and the second slot, and the excitation source being used to excite the first slot and the second slot to radiate circularly polarized waves.

[0006] Optionally, the metal body includes: a first metal pillar, a second metal pillar, a third metal pillar and a fourth metal pillar, and the first metal pillar, the second metal pillar, the third metal pillar and the fourth metal pillar are respectively arranged on the metal plate and are spaced apart in sequence along the circumference of the metal plate; wherein the first gap is formed between the first metal pillar and the second metal pillar and between the third metal pillar and the fourth metal pillar, and the second gap is formed between the first metal pillar and the fourth metal pillar and between the second metal pillar and the third metal pillar.

[0007] Optionally, the first metal pillar and the second metal pillar, and the third metal pillar and the fourth metal pillar are symmetrically arranged along the first gap, and the first metal pillar and the fourth metal pillar, and the second metal pillar and the third metal pillar are symmetrically arranged along the second gap.

[0008] Optionally, the first metal pillar, the second metal pillar, the third metal pillar and the fourth metal pillar are all cuboids with a square bottom.

[0009] Optionally, the excitation source includes: a first metal ring, which is arranged in the first gap, and the first metal ring and the metal body are non-contact coupled; a second metal ring, which is arranged in the second gap, and the second metal ring and the metal body are non-contact coupled, and a gap is set between the second metal ring and the first metal ring; a feed source, the feeding end of the feed source is respectively connected to at least one end of the first metal ring and at least one end of the second metal ring, and the feed source is used to use the first metal ring and the second metal ring to excite the first gap and the second gap to radiate circularly polarized waves.

[0010] Optionally, the first metal ring includes: a first metal arm, which is arranged in the first gap and along the thickness direction of the metal plate; a second metal arm, which is arranged in the first gap and along the plane direction of the metal plate, and the second metal arm and the second metal ring are provided with the gap; a third metal arm, which is arranged in the first gap and along the thickness direction of the metal plate; wherein, an end of the first metal arm away from the metal plate is connected to an end of the second metal arm, and an end of the third metal arm away from the metal plate is connected to an end of the second metal arm away from the first metal arm; an end of the first metal arm close to the metal plate is connected to the feeding end of the feed source, and / or an end of the third metal arm close to the metal plate is connected to the feeding end of the feed source.

[0011] Optionally, the second metal ring includes: a fourth metal arm, which is arranged in the second gap and along the thickness direction of the metal plate; a fifth metal arm, which is arranged in the second gap and along the plane direction of the metal plate, and the fifth metal arm and the first metal ring are provided with the gap; a sixth metal arm, which is arranged in the second gap and along the thickness direction of the metal plate; wherein, an end of the fourth metal arm away from the metal plate is connected to an end of the fifth metal arm, and an end of the sixth metal arm away from the metal plate is connected to an end of the fifth metal arm away from the fourth metal arm; an end of the fourth metal arm close to the metal plate is connected to the feeding end of the feed source, and / or an end of the sixth metal arm close to the metal plate is connected to the feeding end of the feed source.

[0012] Optionally, the first feeding end of the feed source is connected to one end of the first metal ring, and the first feeding end of the feed source is used to feed a first signal to the first metal ring; the second feeding end of the feed source is connected to one end of the second metal ring, and the second feeding end of the feed source is used to feed a second signal to the second metal ring; the third feeding end of the feed source is connected to an end of the first metal ring away from the first feeding end of the feed source, and the third feeding end of the feed source is used to feed a third signal to the third metal ring; the fourth feeding end of the feed source is connected to an end of the second metal ring away from the second feeding end of the feed source, and the fourth feeding end of the feed source is used to feed a fourth signal to the fourth metal ring; wherein the first feeding end, the second feeding end, the third feeding end and the fourth feeding end of the feed source are spaced apart along the circumference of the metal plate, and the amplitudes of the first signal, the second signal, the third signal and the fourth signal are equal and the phases differ by 90 degrees respectively.

[0013] Optionally, the excitation source also includes: a first feed pin, the first feed pin is arranged at the first feeding end of the feed source, and the first feed pin is connected to the end of the first metal ring away from the third feeding end of the feed source, and the first feed pin passes through the metal plate and does not contact the metal plate; a second feed pin, the second feed pin is arranged at the second feeding end of the feed source, and the second feed pin is connected to the end of the second metal ring away from the fourth feeding end of the feed source, and the second feed pin passes through the metal plate and does not contact the metal plate; a third feed pin, the third feed pin is arranged at the third feeding end of the feed source, and the third feed pin is connected to the end of the first metal ring away from the first feeding end of the feed source, and the third feed pin passes through the metal plate and does not contact the metal plate; a fourth feed pin, the fourth feed pin is arranged at the fourth feeding end of the feed source, and the fourth feed pin is connected to the end of the second metal ring away from the second feeding end of the feed source, and the fourth feed pin passes through the metal plate and does not contact the metal plate.

[0014] Optionally, the ratio of the length of the metal body along the thickness direction of the metal plate to the wavelength of the circularly polarized wave is in a range of 0.18:1 to 0.23:1.

[0015] Optionally, the ratio of the length of the metal plate to the wavelength of the circularly polarized wave is less than 0.5; and / or the ratio of the width of the metal plate to the wavelength of the circularly polarized wave is less than 0.5.

[0016] Optionally, the frequency band of the circularly polarized wave is the Tiantong transmit frequency band and / or the Tiantong receive frequency band.

[0017] A second aspect of the present disclosure provides a vehicle, comprising: the antenna module as described in the first aspect of the present disclosure.

[0018] A third aspect of the present disclosure provides a base station, comprising: the antenna module as described in the first aspect of the present disclosure.

[0019] The technical solution provided by the present disclosure may have the following beneficial effects:

[0020] Since the antenna module realizes the radiation of circularly polarized waves through the first slot and the second slot on the metal body, the overall space occupancy is small, and since the transverse opening passes through the metal body along the thickness direction of the metal plate, and the longitudinal opening passes through the metal body along the plane direction of the metal plate, the length of the transverse opening determines the radiation intensity of the circularly polarized wave, and the length of the longitudinal opening determines the coverage range of the circularly polarized wave. Therefore, by setting the ratio between the length of the transverse opening and the length of the longitudinal opening, a wider range of beam coverage can be achieved in a smaller size while meeting the radiation intensity requirements, thereby achieving high-performance communication.

[0021] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a three-dimensional schematic diagram of an antenna module proposed in one embodiment of the present disclosure;

[0024] Figure 2 is a schematic top view of an antenna module proposed in one embodiment of the present disclosure;

[0025] Figure 3 is a three-dimensional schematic diagram of an excitation source in an antenna module proposed in one embodiment of the present disclosure;

[0026] Figure 4 is a schematic front view of an antenna module provided in one embodiment of the present disclosure;

[0027] Figure 5 is a left side schematic diagram of an antenna module proposed in one embodiment of the present disclosure;

[0028] Figure 6 : is an electric field strength diagram (0T) of a simulated antenna module proposed in one embodiment of the present disclosure;

[0029] Figure 7 This is a diagram of the electric field strength (0.25T) of the antenna module simulation proposed in one embodiment of the present disclosure;

[0030] Figure 8 is a curve diagram of the port reflection coefficient of the antenna module simulation proposed in one embodiment of the present disclosure;

[0031] Figure 9 is a directional pattern of the antenna module simulation proposed in one embodiment of the present disclosure;

[0032] Figure 10 is a curve diagram of the port reflection coefficient of the antenna module simulation proposed in one embodiment of the present disclosure;

[0033] Figure 11 is a directional pattern of the antenna module simulation proposed in one embodiment of the present disclosure;

[0034] Figure 12 is a directional pattern of the antenna module simulation proposed in one embodiment of the present disclosure;

[0035] As shown in the figure: 1. Metal plate;

[0036] 2. Metal body, 21. First slit, 22. Second slit, 23. Horizontal opening, 24. Vertical opening, 25. First metal post, 26. Second metal post, 27. Third metal post, 28. Fourth metal post;

[0037] 3. Motivation source;

[0038] 31. first metal ring, 311. first metal arm, 312. second metal arm, 313. third metal arm;

[0039] 32, second metal ring, 321, fourth metal arm, 322, fifth metal arm, 323, sixth metal arm;

[0040] 33. Gap, 34. First feed needle, 35. Second feed needle, 36. Third feed needle, 37. Fourth feed needle. DETAILED DESCRIPTION

[0041] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present disclosure and are not to be construed as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0042] With the rapid development of communication technology, there are more and more types of antennas. However, due to structural limitations, some antennas cannot achieve a wide range of beam coverage while ensuring a certain radiation intensity, which affects the performance of the antenna and cannot meet communication needs.

[0043] For example, in satellite communication scenarios, there are often problems such as relative motion between the satellite and the Earth, or changes in the geographical location of ground communication terminals. Therefore, the antenna needs to ensure a certain strength of circular polarization and use the widest possible beam to cover a wider airspace to ensure a stable signal connection.

[0044] Common side-firing circularly polarized antennas have their maximum radiation direction concentrated in the zenith direction. However, due to the compact installation space, the antenna is difficult to achieve wide-range beam coverage due to structural limitations. Specifically, the actual beam width of the antenna with a gain greater than 0dBic is only about 120°. The narrow beam coverage range is difficult to meet communication needs. Therefore, it is necessary to provide an antenna structure that can achieve wide-range beam coverage in a smaller size while meeting the radiation intensity requirements.

[0045] In order to solve the above technical problems, Figure 1 As shown, an embodiment of the present disclosure proposes an antenna module, comprising: a metal plate 1, a metal body 2 and an excitation source 3, the metal body 2 is arranged on the metal plate 1, and the metal body 2 comprises: a first slot 21 and a second slot 22 arranged crosswise and at a set angle, the first slot 21 and the second slot 22 both comprise: a transverse opening 23 passing through the metal body 2 along the thickness direction of the metal plate 1 and a longitudinal opening 24 passing through the metal body 2 along the plane direction of the metal plate 1, the length of the transverse opening 23 and the length of the longitudinal opening 24 are in a set ratio, the excitation end of the excitation source 3 is arranged in the first slot 21 and the second slot 22, and the excitation source 3 is used to excite the first slot 21 and the second slot 22 to radiate circularly polarized waves.

[0046] It can be understood that since the first slot 21 and the second slot 22 are arranged crosswise and at a set angle, and the excitation end of the excitation source 3 is arranged in the first slot 21 and the second slot 22, the excitation source 3 can effectively excite the first slot 21 and the second slot 22 using a signal that changes along a set period, thereby utilizing the cooperation of the first slot 21 and the second slot 22 to realize a rotating electric field, and then realize the radiation of circularly polarized waves. At the same time, since the metal body 2 is arranged on the metal plate 1, the metal plate 1 can utilize the reflection effect to make the circularly polarized waves generated by the first slot 21 and the second slot 22 radiate along the direction from the metal plate 1 to the metal body 2, thereby making the antenna module form a side-firing circularly polarized antenna, which meets the communication requirements.

[0047] Among them, since the antenna module realizes the radiation of circularly polarized waves through the first slot 21 and the second slot 22 on the metal body 2, the overall space occupancy is small, and since the transverse opening 23 penetrates the metal body 2 along the thickness direction of the metal plate 1, and the longitudinal opening 24 penetrates the metal body 2 along the plane direction of the metal plate 1, the length of the transverse opening 23 determines the radiation intensity of the circularly polarized wave, and the length of the longitudinal opening 24 determines the coverage range of the circularly polarized wave. Therefore, by setting the ratio between the length of the transverse opening 23 and the length of the longitudinal opening 24, a wider range of beam coverage can be achieved in a smaller size while meeting the radiation intensity requirements, thereby achieving high-performance communication.

[0048] It should be noted that when the excitation source 3 utilizes a signal that changes along a set period for excitation, since the first slot 21 and the second slot 22 are arranged on the metal body 2, and the excitation end of the excitation source 3 is arranged in the first slot 21 and the second slot 22, the excitation source 3 can utilize the parasitic effect of the metal body 2 to generate more resonant currents at the first slot 21 and the second slot 22, thereby maximizing the electric field intensity at the first slot 21 and the second slot 22, and circularly polarized waves radiate outward from the transverse openings 23 and the longitudinal openings 24 of the first slot 21 and the second slot 22.

[0049] Furthermore, based on the antenna module of this embodiment, simulation is performed to obtain the following Figure 6 and Figure 7 The electric field intensity distribution diagram shown is from Figure 6 and Figure 7 It can be seen that no matter when the signal period is 0T or when the signal period is 0.25T, the electric field intensity at the transverse opening 23 and the longitudinal opening 24 is the strongest, and the circularly polarized wave mainly radiates outward from the transverse opening 23 and the longitudinal opening 24 of the first slot 21 and the second slot 22.

[0050] Among them, the larger the length of the transverse opening 23, the more circularly polarized waves pass through, and the smaller the length of the transverse opening 23, the fewer circularly polarized waves pass through. At the same time, since the transverse opening 23 penetrates the metal body 2 along the thickness direction of the metal plate 1, the length of the transverse opening 23 determines the radiation intensity of the antenna module; the larger the length of the longitudinal opening 24, the more circularly polarized waves pass through, and the smaller the length of the longitudinal opening 24, the fewer circularly polarized waves pass through. At the same time, since the longitudinal opening 24 penetrates the metal body 2 along the plane direction of the metal plate 1, the length of the longitudinal opening 24 determines the radiation range of the antenna module.

[0051] Furthermore, because the total amount of energy excited by excitation source 3 is fixed, when the radiation intensity at transverse opening 23 increases, the radiation intensity at longitudinal opening 24 decreases accordingly. And when the radiation intensity at transverse opening 23 decreases, the radiation intensity at longitudinal opening 24 increases accordingly, with the two being inversely proportional. Therefore, different ratios between the lengths of transverse opening 23 and longitudinal opening 24 enable the antenna module to have different radiation intensities and beam coverage ranges. Selecting the appropriate ratio based on actual needs can achieve a wide range of beam coverage while meeting radiation intensity requirements.

[0052] The metal plate 1 is used to support the metal body 2 and reflect the circularly polarized waves radiated by the first slot 21 and the second slot 22, so that the whole forms a side-firing antenna. The specific type of the metal plate 1 can be set according to actual needs and is not limited to this. For example, the metal plate 1 can be a floor structure in a circuit board, made of copper material. The size of the metal plate 1 is larger than that of the metal body 2, and the metal body 2 is located in the middle of the metal plate 1.

[0053] Among them, the metal plate 1 has a thickness direction and a plane direction, and the thickness direction and the plane direction of the metal plate 1 are perpendicular. Specifically, the thickness direction of the metal plate 1 can be the Z direction in the coordinate system, and the plane direction of the metal plate 1 can be the XOY plane direction in the coordinate system. The XOY plane direction refers to any direction within the XOY plane.

[0054] The metal body 2 is used to form the first gap 21 and the second gap 22, and to cooperate with the excitation source 3 to play a parasitic role. The specific type of the metal body 2 can be set according to actual needs and is not limited to this. For example, the metal body 2 can be a rectangular structure, and the first gap 21 and the second gap 22 are formed from the middle of the metal body 2 to the surrounding areas.

[0055] Among them, the first slot 21 and the second slot 22 are used for impedance matching of the excitation signal of the excitation source 3, so as to cooperate with each other to radiate circularly polarized waves. The setting angle between the first slot 21 and the second slot 22 can be set according to actual needs, and there is no limitation on this. For example, the setting angle between the first slot 21 and the second slot 22 can be 90 degrees, that is, the arrangement direction of the first slot 21 is perpendicular to the arrangement direction of the second slot 22.

[0056] Since the first slit 21 and the second slit 22 both include: a transverse opening 23 passing through the metal body 2 along the thickness direction of the metal plate 1 and a longitudinal opening 24 passing through the metal body 2 along the plane direction of the metal plate 1, the first slit 21 and the second slit 22 constitute a cross-shaped slit passing through the metal body 2 along the thickness direction of the metal plate 1, and the length direction of the transverse opening 23 is located in the plane direction of the metal plate 1, and the length direction of the longitudinal opening 24 is located in the thickness direction of the metal plate 1.

[0057] The excitation source 3 is used to excite the first slot 21 and the second slot 22 so that the first slot 21 and the second slot 22 radiate circularly polarized waves. Specifically, the excitation source 3 controls the signal phase so that the first slot 21 and the second slot 22 generate an electric field that changes along the period, thereby generating circularly polarized waves using the changing electric field. The specific type of the excitation source 3 can be set according to actual needs and is not limited to this.

[0058] like Figure 2 、 Figure 4 and Figure 5 As shown, in some embodiments, the metal body 2 includes: a first metal pillar 25, a second metal pillar 26, a third metal pillar 27 and a fourth metal pillar 28, and the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are respectively arranged on the metal plate 1 and are spaced in sequence along the circumference of the metal plate 1; wherein, a first gap 21 is formed between the first metal pillar 25 and the second metal pillar 26 and between the third metal pillar 27 and the fourth metal pillar 28, and a second gap 22 is formed between the first metal pillar 25 and the fourth metal pillar 28 and between the second metal pillar 26 and the third metal pillar 27.

[0059] It can be understood that since the excitation end of the excitation source 3 is arranged in the first slot 21 and the second slot 22, the excitation source 3 can utilize the parasitics of the first metal column 25, the second metal column 26, the third metal column 27 and the fourth metal column 28 and the signal that changes along the set period to effectively excite the first slot 21 and the second slot 22, thereby utilizing the cooperation of the first slot 21 and the second slot 22 to realize a rotating electric field, and then realize the radiation of circularly polarized waves to meet communication requirements.

[0060] It should be noted that the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are metal structures spaced apart in sequence along the circumference of the metal plate 1, and they play a parasitic role when the excitation source 3 excites the signal, thereby ensuring that the first gap 21 and the second gap 22 can be excited to produce a strong circularly polarized wave. The specific types of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 can be set according to actual needs and are not restricted.

[0061] Among them, the sizes of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 determine the lengths of the transverse opening 23 and the longitudinal opening 24 in the first slit 21 and the lengths of the transverse opening 23 and the longitudinal opening 24 in the second slit 22. Specifically, since the first slit 21 is formed between the first metal pillar 25 and the second metal pillar 26 and between the third metal pillar 27 and the fourth metal pillar 28, the larger the sizes of the first metal pillar 25 and the second metal pillar 26 and the third metal pillar 27 and the fourth metal pillar 28 in the plane direction of the metal plate 1, the larger the length of the transverse opening 23 in the first slit 21. The larger the dimensions of the first metal pillar 25 and the second metal pillar 26 as well as the third metal pillar 27 and the fourth metal pillar 28 in the thickness direction of the metal plate 1, the longer the length of the longitudinal opening 24 in the first slit 21; similarly, the larger the dimensions of the first metal pillar 25 and the fourth metal pillar 28 as well as the second metal pillar 26 and the third metal pillar 27 in the plane direction of the metal plate 1, the longer the length of the transverse opening 23 in the second slit 22, and the larger the dimensions of the first metal pillar 25 and the fourth metal pillar 28 as well as the second metal pillar 26 and the third metal pillar 27 in the thickness direction of the metal plate 1, the longer the length of the longitudinal opening 24 in the second slit 22.

[0062] The specific sizes of the first metal pillar 25 , the second metal pillar 26 , the third metal pillar 27 and the fourth metal pillar 28 can be set according to actual needs and are not limited thereto.

[0063] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, in some embodiments, the first metal pillar 25 and the second metal pillar 26 and the third metal pillar 27 and the fourth metal pillar 28 are symmetrically arranged along the first gap 21, and the first metal pillar 25 and the fourth metal pillar 28 and the second metal pillar 26 and the third metal pillar 27 are symmetrically arranged along the second gap 22.

[0064] It can be understood that since the excitation source 3 uses a signal that changes along a set period to excite the first slot 21 and the second slot 22, the first slot 21 and the second slot 22 are alternately coordinated to realize a rotating electric field to realize the radiation of a circularly polarized wave. Therefore, when the first metal column 25 and the second metal column 26 and the third metal column 27 and the fourth metal column 28 are symmetrically arranged along the first slot 21, and the first metal column 25 and the fourth metal column 28 and the second metal column 26 and the third metal column 27 are symmetrically arranged along the second slot 22, the sizes of the first slot 21 and the second slot 22 can be close to equal or even completely equal, thereby facilitating the realization that the signal amplitude radiated by the first slot 21 is equal to the signal amplitude radiated by the second slot 22, so that the radiation pattern of the antenna module has higher roundness and better symmetry, thereby meeting the high-performance communication requirements.

[0065] It should be noted that the manner in which the first metal pillar 25 and the second metal pillar 26 and the third metal pillar 27 and the fourth metal pillar 28 are made symmetrical along the first gap 21, and the manner in which the first metal pillar 25 and the fourth metal pillar 28 and the second metal pillar 26 and the third metal pillar 27 are made symmetrical along the second gap 22, can be set according to actual needs and there is no limitation to this. For example, the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 can be set to a prism structure, a rectangular structure, etc. of the same size.

[0066] like Figure 2 As shown, in some embodiments, the first metal pillar 25 , the second metal pillar 26 , the third metal pillar 27 and the fourth metal pillar 28 are all cuboids with a square bottom.

[0067] It can be understood that because excitation source 3 excites first slot 21 and second slot 22 with a signal that varies along a set period, the first slot 21 and second slot 22 alternately cooperate to create a rotating electric field, thereby achieving radiation of circularly polarized waves. Furthermore, first slot 21 and second slot 22 are formed between first metal pillar 25, second metal pillar 26, third metal pillar 27, and fourth metal pillar 28. Therefore, when first metal pillar 25, second metal pillar 26, third metal pillar 27, and fourth metal pillar 28 are all rectangular parallelepipeds with square bottoms, the sizes of first slot 21 and second slot 22 can be nearly equal or even completely equal. This facilitates ensuring that the amplitude of the signal radiated by first slot 21 is equal to the amplitude of the signal radiated by second slot 22, resulting in a more circular and symmetrical pattern for the antenna module, thereby meeting high-performance communication requirements.

[0068] It should be noted that when the first metal pillar 25 and the second metal pillar 26 and the third metal pillar 27 and the fourth metal pillar 28 are symmetrically arranged along the first gap 21, and the first metal pillar 25 and the fourth metal pillar 28 and the second metal pillar 26 and the third metal pillar 27 are symmetrically arranged along the second gap 22, the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 can be set at the same time as rectangular prisms with square bottoms to optimize the roundness and symmetry of the antenna module radiation pattern.

[0069] like Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, in some embodiments, the excitation source 3 includes: a first metal ring 31, a second metal ring 32 and a feed source (not shown in the figure), the first metal ring 31 is arranged in the first gap 21, and the first metal ring 31 and the metal body 2 are non-contact coupled, the second metal ring 32 is arranged in the second gap 22, and the second metal ring 32 and the metal body 2 are non-contact coupled, the second metal ring 32 and the first metal ring 31 are provided with a gap 33, the feeding end of the feed source is respectively connected to at least one end of the first metal ring 31 and at least one end of the second metal ring 32, and the feed source is used to use the first metal ring 31 and the second metal ring 32 to excite the first gap 21 and the second gap 22 to radiate circularly polarized waves.

[0070] It can be understood that, since the first metal ring 31 is disposed within the first slot 21 and the first metal ring 31 and the metal body 2 are non-contact coupled, the feed end of the feed source is connected to at least one end of the first metal ring 31, so that the feed source can excite the first metal ring 31 using a signal that varies along a set period, and utilize the parasitic coordination between the first metal ring 31 and the metal body 2 to achieve excitation of the first slot 21; since the second metal ring 32 is disposed within the second slot 22 and the second metal ring 32 and the metal body 2 are non-contact coupled, the feed end of the feed source is connected to at least one end of the second metal ring 32, so that the feed source can excite the second metal ring 32 using a signal that varies along a set period, and utilize the parasitic coordination between the second metal ring 32 and the metal body 2 to achieve excitation of the second slot 22. Thus, through the coordination between the first metal ring 31 and the second metal ring 32, the first slot 21 and the second slot 22 can be effectively excited, thereby achieving efficient radiation of circularly polarized waves.

[0071] It should be noted that the first metal ring 31 is used to generate a resonant current under the excitation of the feed source, and at the same time generate a parasitic current on the metal body 2. Thus, the first metal ring 31 cooperates with the metal body 2 to realize the excitation of the first gap 21, and then cooperates with the second gap 22 to generate a circularly polarized wave. The specific type of the first metal ring 31 can be set according to actual needs and is not limited to this. For example, the first metal ring 31 can be a U-shaped structure, and the U-shaped mouth of the first metal ring 31 faces the metal plate 1 and forms a closed ring structure with the metal plate 1.

[0072] The second metal ring 32 is used to generate a resonant current under the excitation of the feed source, and at the same time generate a parasitic current on the metal body 2. Therefore, the second metal ring 32 cooperates with the metal body 2 to realize the excitation of the second gap 22, and then cooperates with the first gap 21 to generate a circularly polarized wave. The specific type of the second metal ring 32 can be set according to actual needs and is not limited to this. For example, the second metal ring 32 can be a U-shaped structure, and the U-shaped mouth of the second metal ring 32 faces the metal plate 1 and forms a closed ring structure with the metal plate 1.

[0073] Among them, the different sizes of the first metal ring 31 and the second metal ring 32 can form different resonant currents, thereby generating circularly polarized waves of different frequency bands. The specific sizes of the first metal ring 31 and the second metal ring 32 can be set according to actual needs and are not limited to this.

[0074] The first metal ring 31 and the second metal ring 32 are respectively non-contact coupled with the metal body 2. Specifically, the first metal ring 31 and the second metal ring 32 are respectively not in contact with the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28, and the spacing between the first metal ring 31 and the second metal ring 32 and the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 is sufficient to enable the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 to generate parasitic current when the first metal ring 31 and the second metal ring 32 generate a resonant current.

[0075] The feed source is used to feed an excitation signal to the first metal ring 31 and the second metal ring 32. The specific type of the feed source can be set according to actual needs and is not limited to this. For example, the feed source can be a feed circuit, a chip, etc. in a circuit board.

[0076] Among them, the feeding end of the feed source can be connected only to one end of the first metal ring 31, or it can be connected to both ends of the first metal ring 31 at the same time. Similarly, the feeding end of the feed source can be connected only to one end of the second metal ring 32, or it can be connected to both ends of the second metal ring 32 at the same time. There is no restriction on this, but it should be noted that the purpose of the feed source is to feed a signal with a periodic phase change to the first metal ring 31 and the second metal ring 32 to ensure that the first slot 21 and the second slot 22 can radiate circularly polarized waves.

[0077] like Figure 3 As shown, in some embodiments, the first metal ring 31 includes: a first metal arm 311, a second metal arm 312 and a third metal arm 313, the first metal arm 311 is arranged in the first gap 21, and the first metal arm 311 is arranged along the thickness direction of the metal plate 1, the second metal arm 312 is arranged in the first gap 21, and the second metal arm 312 is arranged along the plane direction of the metal plate 1, a gap 33 is provided between the second metal arm 312 and the second metal ring 32, and the third metal arm 313 is arranged in the first gap 21, and the third metal arm 313 is arranged along the thickness direction of the metal plate 1; wherein, an end of the first metal arm 311 away from the metal plate 1 is connected to an end of the second metal arm 312, an end of the third metal arm 313 away from the metal plate 1 is connected to an end of the second metal arm 312 away from the first metal arm 311, an end of the first metal arm 311 close to the metal plate 1 is connected to the feeding end of the feed source, and / or an end of the third metal arm 313 close to the metal plate 1 is connected to the feeding end of the feed source.

[0078] It can be understood that since the end of the first metal arm 311 away from the metal plate 1 is connected to the end of the second metal arm 312, and the end of the third metal arm 313 away from the metal plate 1 is connected to the end of the second metal arm 312 away from the first metal arm 311, the first metal arm 311, the second metal arm 312 and the third metal arm 313 constitute a first metal ring 31 with a U-shaped structure, which not only enables the first metal ring 31 to adapt to the first gap 21 in a smaller space, but also has a larger radiation area. At the same time, when the feed source feeds a signal to the first metal arm 311 and / or the third metal arm 313, a resonant current can be excited on the first metal arm 311, the second metal arm 312 and the third metal arm 313, thereby utilizing the cooperation of the first metal arm 311, the second metal arm 312 and the third metal arm 313 with the metal body 2 to achieve effective excitation of the first gap 21, and then cooperate with the second gap 22 to achieve high-performance radiation of circularly polarized waves.

[0079] It should be noted that the first metal arm 311, the second metal arm 312 and the third metal arm 313 are connected in sequence to form the first metal ring 31 of the U-shaped structure. The specific types of the first metal arm 311, the second metal arm 312 and the third metal arm 313 can be set according to actual needs and are not limited to this.

[0080] like Figure 3 As shown, in some embodiments, the second metal ring 32 includes: a fourth metal arm 321, a fifth metal arm 322 and a sixth metal arm 323, the fourth metal arm 321 is arranged in the second gap 22, and the fourth metal arm 321 is arranged along the thickness direction of the metal plate 1, the fifth metal arm 322 is arranged in the second gap 22, and the fifth metal arm 322 is arranged along the plane direction of the metal plate 1, a gap 33 is set between the fifth metal arm 322 and the first metal ring 31, and the sixth metal arm 323 is arranged in the second gap 22, and the sixth metal arm 323 is arranged along the thickness direction of the metal plate 1; wherein, an end of the fourth metal arm 321 away from the metal plate 1 is connected to an end of the fifth metal arm 322, an end of the sixth metal arm 323 away from the metal plate 1 is connected to an end of the fifth metal arm 322 away from the fourth metal arm 321, an end of the fourth metal arm 321 close to the metal plate 1 is connected to the feeding end of the feed source, and / or an end of the sixth metal arm 323 close to the metal plate 1 is connected to the feeding end of the feed source.

[0081] It can be understood that since the end of the fourth metal arm 321 away from the metal plate 1 is connected to the end of the fifth metal arm 322, and the end of the sixth metal arm 323 away from the metal plate 1 is connected to the end of the fifth metal arm 322 away from the fourth metal arm 321, the fourth metal arm 321, the fifth metal arm 322 and the sixth metal arm 323 constitute a second metal ring 32 of a U-shaped structure, which not only enables the second metal ring 32 to adapt to the second gap 22 in a smaller space, but also has a larger radiation area. At the same time, when the feed source feeds a signal to the fourth metal arm 321 and / or the sixth metal arm 323, a resonant current can be excited on the fourth metal arm 321, the fifth metal arm 322 and the sixth metal arm 323, thereby utilizing the cooperation of the fourth metal arm 321, the fifth metal arm 322 and the sixth metal arm 323 with the metal body 2 to achieve effective excitation of the second gap 22, and then cooperate with the first gap 21 to achieve high-performance radiation of circularly polarized waves.

[0082] It should be noted that the fourth metal arm 321, the fifth metal arm 322 and the sixth metal arm 323 are connected in sequence to form a second metal ring 32 of a U-shaped structure. The specific types of the fourth metal arm 321, the fifth metal arm 322 and the sixth metal arm 323 can be set according to actual needs and are not limited to this.

[0083] Among them, the gap 33 between the first metal ring 31 and the second metal ring 32 can reduce the mutual influence between the first metal ring 31 and the second metal ring 32, ensure the stable formation of circularly polarized waves, and at the same time make the radiation pattern of the antenna module have higher roundness and better symmetry. Specifically, the gap 33 is set between the second metal arm 312 and the fifth metal arm 322, and the fifth metal arm 322 is located between the second metal arm 312 and the metal plate 1.

[0084] In some embodiments, the first feeding end of the feed source is connected to one end of the first metal ring 31, and the first feeding end of the feed source is used to feed a first signal to the first metal ring 31; the second feeding end of the feed source is connected to one end of the second metal ring 32, and the second feeding end of the feed source is used to feed a second signal to the second metal ring 32; the third feeding end of the feed source is connected to an end of the first metal ring 31 away from the first feeding end of the feed source, and the third feeding end of the feed source is used to feed a third signal to the third metal ring; the fourth feeding end of the feed source is connected to an end of the second metal ring 32 away from the second feeding end of the feed source, and the fourth feeding end of the feed source is used to feed a fourth signal to the fourth metal ring; wherein the first feeding end, the second feeding end, the third feeding end and the fourth feeding end of the feed source are spaced apart along the circumference of the metal plate 1, and the amplitudes of the first signal, the second signal, the third signal and the fourth signal are equal and the phases differ by 90 degrees respectively.

[0085] It can be understood that the feed source utilizes the first feeding end, the second feeding end, the third feeding end and the fourth feeding end to feed the first signal, the second signal, the third signal and the fourth signal with equal amplitude and phase difference of 90 degrees to the first metal ring 31 and the second metal ring 32 respectively, thereby utilizing the first signal, the second signal, the third signal and the fourth signal to effectively excite the first slot 21 and the second slot 22, and then utilizing the cooperation of the first slot 21 and the second slot 22 to realize a rotating electric field, thereby realizing the radiation of circularly polarized waves and meeting the high-performance communication requirements.

[0086] It should be noted that the feed source has a first feeding end, a second feeding end, a third feeding end and a fourth feeding end, and the first feeding end, the second feeding end, the third feeding end and the fourth feeding end feed the first signal, the second signal, the third signal and the fourth signal respectively.

[0087] like Figure 3 、 Figure 4 and Figure 5 As shown, in some embodiments, the excitation source 3 further includes: a first feed needle 34, a second feed needle 35, a third feed needle 36 and a fourth feed needle 37, the first feed needle 34 is arranged at the first feeding end of the feed source, and the first feed needle 34 is connected to the end of the first metal ring 31 away from the third feeding end of the feed source, the first feed needle 34 passes through the metal plate 1 and does not contact the metal plate 1, the second feed needle 35 is arranged at the second feeding end of the feed source, and the second feed needle 35 is connected to the end of the second metal ring 32 away from the fourth feeding end of the feed source. The second feed needle 35 passes through the metal plate 1 and does not contact the metal plate 1. The third feed needle 36 is arranged at the third feeding end of the feed source, and the third feed needle 36 is connected to the end of the first metal ring 31 away from the first feeding end of the feed source. The third feed needle 36 passes through the metal plate 1 and does not contact the metal plate 1. The fourth feed needle 37 is arranged at the fourth feeding end of the feed source, and the fourth feed needle 37 is connected to the end of the second metal ring 32 away from the second feeding end of the feed source. The fourth feed needle 37 passes through the metal plate 1 and does not contact the metal plate 1.

[0088] It can be understood that, since the first feed needle 34 is provided at the first feeding end of the feed source, and the first feed needle 34 is connected to the end of the first metal ring 31 away from the third feeding end of the feed source, the first feeding end of the feed source can use the first feed needle 34 to feed the first signal to the first metal ring 31; since the second feed needle 35 is provided at the second feeding end of the feed source, and the second feed needle 35 is connected to the end of the second metal ring 32 away from the fourth feeding end of the feed source, the second feeding end of the feed source can use the second feed needle 35 to feed the second metal ring 32. Since the third feed pin 36 is arranged at the third feeding end of the feed source, and the third feed pin 36 is connected to the end of the first metal ring 31 away from the first feeding end of the feed source, the third feeding end of the feed source can use the third feed pin 36 to feed the third signal to the first metal ring 31; since the fourth feed pin 37 is arranged at the fourth feeding end of the feed source, and the fourth feed pin 37 is connected to the end of the second metal ring 32 away from the second feeding end of the feed source, the fourth feeding end of the feed source can use the fourth feed pin 37 to feed the fourth signal to the second metal ring 32. Thus, by setting the first feed pin 34, the second feed pin 35, the third feed pin 36 and the fourth feed pin 37, it is ensured that the feed source can stably feed the first signal, the second signal, the third signal and the fourth signal to the first metal ring 31 and the second metal ring 32, thereby achieving efficient radiation of circularly polarized waves.

[0089] It should be noted that the first feed needle 34, the second feed needle 35, the third feed needle 36 and the fourth feed needle 37 are used to feed the first signal, the second signal, the third signal and the fourth signal respectively. The specific types of the first feed needle 34, the second feed needle 35, the third feed needle 36 and the fourth feed needle 37 can be set according to actual needs and are not limited to this. For example, the first feed needle 34, the second feed needle 35, the third feed needle 36 and the fourth feed needle 37 can all be coaxial probes, and the corresponding positions of the metal plate 1 are respectively provided with through holes for the first feed needle 34, the second feed needle 35, the third feed needle 36 and the fourth feed needle 37 to pass through. Taking the first feed needle 34 as an example, the first feed needle 34 includes: an outer conductor, an inner conductor and a dielectric layer. The outer conductor is arranged on the outside of the inner conductor, and the dielectric layer is arranged between the outer conductor and the inner conductor. The first feed needle 34 passes through the through hole, and the outer conductor of the first feed needle 34 is connected to the metal plate 1, and the inner conductor of the first feed needle 34 is only connected to the first metal ring 31.

[0090] In some embodiments, the ratio of the length of the metal body 2 along the thickness direction of the metal plate 1 to the wavelength of the circularly polarized wave ranges from 0.18:1 to 0.23:1.

[0091] It can be understood that since the ratio of the length of the metal body 2 along the thickness direction of the metal plate 1 to the wavelength of the circularly polarized wave is in the range of 0.18:1 to 0.23:1, the metal body 2 can utilize the first gap 21 and the second gap 22 to radiate circularly polarized waves with high performance while occupying a smaller space.

[0092] It should be noted that the length of the metal body 2 along the thickness direction of the metal plate 1 refers to the Z-direction height of the metal body 2. The ratio of the length of the metal body 2 along the thickness direction of the metal plate 1 to the wavelength of the circularly polarized wave can be 0.18:1, 0.23:1, or 0.2:1, etc., and there is no restriction on this.

[0093] In some embodiments, the ratio of the length of the metal plate 1 to the wavelength of the circularly polarized wave is less than 0.5; and / or the ratio of the width of the metal plate 1 to the wavelength of the circularly polarized wave is less than 0.5.

[0094] It is understandable that since the ratio of the length and width of the metal plate 1 to the wavelength of the circularly polarized wave is less than 0.5, the metal plate 1 can effectively play a reflective role while having a smaller size, thereby reducing the space occupied by the antenna module.

[0095] It should be noted that the length and width of the metal plate 1 can be equal or similar. Equal length and width of the metal plate 1 can achieve a higher circularity and better symmetry in the antenna module's radiation pattern. The ratios of the length and width of the metal plate 1 to the wavelength of the circularly polarized wave can be 0.49, 0.48, 0.45, 0.43, 0.42, etc., without limitation.

[0096] In some embodiments, the frequency band of the circularly polarized wave is the Tiantong transmit frequency band and / or the Tiantong receive frequency band.

[0097] It can be understood that since the frequency band of the circularly polarized wave is the Tiantong transmit frequency band and / or the Tiantong receive frequency band, the antenna module can use the Tiantong transmit frequency band and / or the Tiantong receive frequency band to communicate, thereby meeting satellite communication needs.

[0098] It should be noted that the Tiantong transmit frequency band ranges from 1.98GHz to 2.01GHz, and the Tiantong receive frequency band ranges from 2.17GHz to 2.2GHz.

[0099] Furthermore, based on the antenna module of this embodiment, simulation is performed to obtain the following Figure 8 and Figure 9 Directional pattern shown.

[0100] exist Figure 8In the figure, the three curves represent the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 of different widths (wpost), that is, the widths of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are equal to 22 mm, 25 mm and 30 mm, respectively. It can be seen from the figure that the widths of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 have no effect on the resonant frequency of the antenna module. Under different widths, the resonant frequency of the antenna module is all around 2.01 GHz. It should be noted that the width and length of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are equal, and the width direction and length direction of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are both located in the plane direction of the metal plate 1. In addition, only the sizes of the first metal ring 31 and the second metal ring 32 in the antenna module determine the overall resonant frequency (the frequency band of the circularly polarized wave).

[0101] exist Figure 9 In the graph, the six curves are divided into three groups, each group has two curves. The difference between the two curves in each group is that one curve represents Phi equal to 0 degrees, and the other curve represents Phi equal to 90 degrees. At the same time, the three groups of curves are generated when the frequency band of the circularly polarized wave is 2.03 GHz. Moreover, the three groups of curves represent that the widths of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are equal to 22 mm, 25 mm and 30 mm, respectively. Figure 9 It can be seen that when the widths of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are larger, the electric field effect of the horizontal opening 23 is more obvious, and the radiation intensity in the Z direction (zenith direction) is the largest, but the beam is narrower. When the widths of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are smaller, the electric field effect of the longitudinal opening 24 is more obvious, and the radiation intensity in the Z direction (zenith direction) becomes weaker and a depression appears, but the beam is significantly widened. Among them, it should be noted that the width of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 cannot be too small. For example, the 22mm curve has obvious gain fluctuations in the angle range of -100 to +100, poor symmetry, and poor gain consistency under different Phi values. On the contrary, when the width of the first metal pillar 25, the second metal pillar 26, the third metal pillar 27 and the fourth metal pillar 28 are suitable sizes such as 25mm and 30mm, the curve has good symmetry and high gain consistency under different Phi values, so that the antenna module has higher communication performance.

[0102] Based on the simulation of the antenna module of this embodiment, the following is obtained: Figure 10 The port reflection coefficient curve shown in Figure 10 As shown in the figure, the port reflection coefficients of the S(1:1) curve, S(2:1) curve, S(3:1) curve, and S(4:1) curve near 2.01 GHz are all lower than -10 dB, and the antenna module has high radiation performance.

[0103] At the same time, Figure 10 From the S(1:1) curve, it can be clearly seen that the antenna module has a well-matched resonant mode. In this mode, the directional pattern of the cross section with Phi equal to 0deg and the directional pattern of the cross section with Phi equal to 90deg are as follows: Figure 11 As shown, from Figure 11 It can be seen that the beam width greater than 0 dBic in the antenna module is significantly greater than 180°. Compared with the prior art, the antenna module of this embodiment has a wider range of beam coverage.

[0104] Similarly, the circular polarization gain of the antenna module at theta = 60°, 70°, 80° and 90° sections is as follows: Figure 12 As shown, from Figure 12 It can be seen from the figure that the antenna module's radiation pattern has good roundness.

[0105] The embodiment of the present disclosure further provides a vehicle, comprising: an antenna module as in the embodiment of the present disclosure.

[0106] It can be understood that since the first slot 21 and the second slot 22 are arranged crosswise and at a set angle, and the excitation end of the excitation source 3 is arranged in the first slot 21 and the second slot 22, the excitation source 3 can effectively excite the first slot 21 and the second slot 22 using a signal that changes along a set period, thereby utilizing the cooperation of the first slot 21 and the second slot 22 to realize a rotating electric field, and then realize the radiation of circularly polarized waves. At the same time, since the metal body 2 is arranged on the metal plate 1, the metal plate 1 can utilize the reflection effect to make the circularly polarized waves generated by the first slot 21 and the second slot 22 radiate along the direction from the metal plate 1 to the metal body 2, thereby making the antenna module form a side-firing circularly polarized antenna, which meets the communication requirements.

[0107] Among them, since the antenna module realizes the radiation of circularly polarized waves through the first slot 21 and the second slot 22 on the metal body 2, the overall space occupancy is small, and since the transverse opening 23 penetrates the metal body 2 along the thickness direction of the metal plate 1, and the longitudinal opening 24 penetrates the metal body 2 along the plane direction of the metal plate 1, the length of the transverse opening 23 determines the radiation intensity of the circularly polarized wave, and the length of the longitudinal opening 24 determines the coverage range of the circularly polarized wave. Therefore, by setting the ratio between the length of the transverse opening 23 and the length of the longitudinal opening 24, a wider range of beam coverage can be achieved in a smaller size while meeting the radiation intensity requirements, thereby achieving high-performance communication.

[0108] It should be noted that the specific type of vehicle can be set according to actual needs and is not limited to this. For example, the vehicle can be an electric vehicle, a fuel vehicle, a hybrid vehicle, etc.

[0109] The embodiment of the present disclosure further proposes a base station, characterized by comprising: an antenna module as in the embodiment of the present disclosure.

[0110] Since the first slot 21 and the second slot 22 are arranged crosswise and at a set angle, and the excitation end of the excitation source 3 is arranged in the first slot 21 and the second slot 22, the excitation source 3 can effectively excite the first slot 21 and the second slot 22 by using a signal that changes along a set period, thereby realizing a rotating electric field by using the cooperation of the first slot 21 and the second slot 22, and further realizing the radiation of circularly polarized waves. At the same time, since the metal body 2 is arranged on the metal plate 1, the metal plate 1 can utilize the reflection effect to make the circularly polarized waves generated by the first slot 21 and the second slot 22 radiate along the direction from the metal plate 1 to the metal body 2, thereby making the antenna module form a side-firing circularly polarized antenna, which meets the communication requirements.

[0111] Among them, since the antenna module realizes the radiation of circularly polarized waves through the first slot 21 and the second slot 22 on the metal body 2, the overall space occupancy is small, and since the transverse opening 23 penetrates the metal body 2 along the thickness direction of the metal plate 1, and the longitudinal opening 24 penetrates the metal body 2 along the plane direction of the metal plate 1, the length of the transverse opening 23 determines the radiation intensity of the circularly polarized wave, and the length of the longitudinal opening 24 determines the coverage range of the circularly polarized wave. Therefore, by setting the ratio between the length of the transverse opening 23 and the length of the longitudinal opening 24, a wider range of beam coverage can be achieved in a smaller size while meeting the radiation intensity requirements, thereby achieving high-performance communication.

[0112] It should be noted that the specific type of the base station can be set according to actual needs and is not limited to this. For example, the base station can be a fixed platform for satellite communication.

[0113] In the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0114] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0115] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0116] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. An antenna module, characterized in that: include: Metal sheets; a metal body, the metal body being disposed on the metal plate and comprising: a first slit and a second slit arranged crosswise and at a set angle, the first slit and the second slit each comprising: a transverse opening extending through the metal body in a thickness direction of the metal plate and a longitudinal opening extending through the metal body in a plane direction of the metal plate, the length of the transverse opening being in a set ratio to the length of the longitudinal opening; An excitation source, wherein an excitation end of the excitation source is arranged in the first slot and the second slot, and the excitation source is used to excite the first slot and the second slot to radiate circularly polarized waves.

2. The antenna module according to claim 1, wherein: The metal body comprises: a first metal pillar, a second metal pillar, a third metal pillar, and a fourth metal pillar, wherein the first metal pillar, the second metal pillar, the third metal pillar, and the fourth metal pillar are respectively disposed on the metal plate and spaced in sequence along the circumference of the metal plate; The first gap is formed between the first metal pillar and the second metal pillar and between the third metal pillar and the fourth metal pillar, and the second gap is formed between the first metal pillar and the fourth metal pillar and between the second metal pillar and the third metal pillar.

3. The antenna module according to claim 2, wherein: The first metal pillar and the second metal pillar, as well as the third metal pillar and the fourth metal pillar are symmetrically arranged along the first gap, and the first metal pillar and the fourth metal pillar, as well as the second metal pillar and the third metal pillar are symmetrically arranged along the second gap.

4. The antenna module according to claim 2, wherein: The first metal pillar, the second metal pillar, the third metal pillar, and the fourth metal pillar are all cuboids with square bottoms.

5. The antenna module according to any one of claims 1 to 4, characterized in that: The excitation source includes: a first metal ring, wherein the first metal ring is disposed in the first gap, and the first metal ring and the metal body are non-contact coupled; a second metal ring, the second metal ring being disposed in the second gap, the second metal ring and the metal body being non-contact coupled, and a gap being provided between the second metal ring and the first metal ring; A feed source, wherein the feeding end of the feed source is respectively connected to at least one end of the first metal ring and at least one end of the second metal ring, and the feed source is used to use the first metal ring and the second metal ring to excite the first slot and the second slot to radiate circularly polarized waves.

6. The antenna module according to claim 5, wherein: The first metal ring comprises: a first metal arm, the first metal arm being disposed in the first gap and arranged along a thickness direction of the metal plate; a second metal arm, the second metal arm being arranged in the first gap and along the plane direction of the metal plate, and the second metal arm and the second metal ring being provided with the gap; a third metal arm, the third metal arm being disposed in the first gap and along a thickness direction of the metal plate; Wherein, one end of the first metal arm away from the metal plate is connected to one end of the second metal arm, and one end of the third metal arm away from the metal plate is connected to one end of the second metal arm away from the first metal arm; One end of the first metal arm close to the metal plate is connected to the feeding end of the feed source, and / or one end of the third metal arm close to the metal plate is connected to the feeding end of the feed source.

7. The antenna module according to claim 5, characterized in that: The second metal ring comprises: a fourth metal arm, the fourth metal arm being disposed in the second gap and arranged along a thickness direction of the metal plate; a fifth metal arm, the fifth metal arm being disposed in the second gap and arranged along the plane direction of the metal plate, and the gap being provided between the fifth metal arm and the first metal ring; a sixth metal arm, the sixth metal arm being disposed in the second gap and arranged along a thickness direction of the metal plate; Wherein, one end of the fourth metal arm away from the metal plate is connected to one end of the fifth metal arm, and one end of the sixth metal arm away from the metal plate is connected to one end of the fifth metal arm away from the fourth metal arm; One end of the fourth metal arm close to the metal plate is connected to the feeding end of the feed source, and / or one end of the sixth metal arm close to the metal plate is connected to the feeding end of the feed source.

8. The antenna module according to claim 5, wherein: The first feeding end of the feed source is connected to one end of the first metal ring, and the first feeding end of the feed source is used to feed a first signal to the first metal ring; The second feeding end of the feed source is connected to one end of the second metal ring, and the second feeding end of the feed source is used to feed a second signal to the second metal ring; The third feeding end of the feed source is connected to an end of the first metal ring away from the first feeding end of the feed source, and the third feeding end of the feed source is used to feed a third signal to the third metal ring; The fourth feeding end of the feed source is connected to an end of the second metal ring away from the second feeding end of the feed source, and the fourth feeding end of the feed source is used to feed a fourth signal to the fourth metal ring; The first feeding end, the second feeding end, the third feeding end and the fourth feeding end of the feed source are spaced apart along the circumference of the metal plate, and the amplitudes of the first signal, the second signal, the third signal and the fourth signal are equal and the phases differ by 90 degrees respectively.

9. The antenna module according to claim 8, wherein: The excitation source further includes: a first feed needle, the first feed needle being arranged at the first feeding end of the feed source, and being connected to an end of the first metal ring away from the third feeding end of the feed source, and the first feed needle passing through the metal plate and not contacting the metal plate; a second feed needle, the second feed needle being arranged at the second feeding end of the feed source, and being connected to an end of the second metal ring away from the fourth feeding end of the feed source, and the second feed needle passing through the metal plate and not in contact with the metal plate; a third feed needle, the third feed needle being arranged at the third feeding end of the feed source, and the third feed needle being connected to an end of the first metal ring away from the first feeding end of the feed source, and the third feed needle passing through the metal plate and not in contact with the metal plate; A fourth feed needle is arranged at the fourth feeding end of the feed source, and the fourth feed needle is connected to an end of the second metal ring away from the second feeding end of the feed source, and the fourth feed needle passes through the metal plate and does not contact the metal plate.

10. The antenna module according to claim 1, wherein: The ratio of the length of the metal body along the thickness direction of the metal plate to the wavelength of the circularly polarized wave is in a range of 0.18:1 to 0.23:

1.

11. The antenna module according to claim 1, wherein: The ratio of the length of the metal plate to the wavelength of the circularly polarized wave is less than 0.5; and / or The ratio of the width of the metal plate to the wavelength of the circularly polarized wave is less than 0.

5.

12. The antenna module according to claim 1, wherein: The frequency band of the circularly polarized wave is the Tiantong transmitting frequency band and / or the Tiantong receiving frequency band.

13. A vehicle, characterized in that: include: The antenna module according to any one of claims 1 to 12.

14. A base station, characterized in that: include: The antenna module according to any one of claims 1 to 12.

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