Antenna module, terminal equipment and satellite

Abstract

The invention provides an antenna module, terminal equipment and a satellite, and the antenna module comprises two feed antennas which are arranged in an orthogonal manner and a first radiator, the signal phase difference of the two feed antennas is a set value, the two feed antennas are used for forming a first circularly polarized wave, the first radiator and the feed antennas are arranged adjacently, the first radiator and the feed antennas are coupled, and the first circularly polarized wave is used for forming a second circularly polarized wave. The first radiator is used for forming a second circularly polarized wave under the excitation of the first circularly polarized wave, and the first circularly polarized wave and the second circularly polarized wave respectively cover different frequency bands. According to the antenna module, the terminal equipment and the satellite, the first radiator can parasitize the second circularly polarized wave by utilizing the shape, the size and the like of the first radiator under the excitation of the first circularly polarized wave, so that the bandwidth of the antenna module is effectively expanded through the cooperation of the first circularly polarized wave and the second circularly polarized wave covering different frequency bands, and the antenna efficiency is improved. Therefore, the performance of the antenna module is effectively improved, and the use requirements are met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of antennas, and in particular, to an antenna module, a terminal device, and a satellite. Background Art

[0002] With the continuous development of communication technologies, the performance requirements for antennas are also getting higher and higher. Among them, back-fed microstrip antennas using single-feed circular polarization or dual-feed circular polarization are widely used in various fields due to their simple structure and convenient processing. However, since the feed of the back-fed microstrip antenna is directly connected to the radiator, its bandwidth is relatively narrow, making it difficult to meet the usage requirements. Summary of the Invention

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

[0004] To this end, an object of the present disclosure is to provide an antenna module, a terminal device, and a satellite.

[0005] To achieve the above object, a first aspect of the present disclosure provides an antenna module, including: two feed antennas arranged orthogonally, with a signal phase difference of a set value between the two feed antennas, and the two feed antennas are used to form a first circularly polarized wave; a first radiator, the first radiator is adjacent to the feed antenna, and the first radiator is coupled to the feed antenna, and the first radiator is used to form a second circularly polarized wave under the excitation of the first circularly polarized wave; wherein, the first circularly polarized wave and the second circularly polarized wave respectively cover different frequency bands.

[0006] Optionally, the antenna module further includes: a second radiator, the second radiator is adjacent to the first radiator, and the second radiator is located on a side of the first radiator away from the feed antenna, and the second radiator is coupled to the first radiator, and the second radiator is used to form a third circularly polarized wave under the excitation of the second circularly polarized wave; wherein, the first circularly polarized wave, the second circularly polarized wave, and the third circularly polarized wave respectively cover different frequency bands.

[0007] Optionally, the second radiator includes: a first part, the first part is adjacent to the first radiator, and the first part is located on a side of the first radiator away from the feed antenna, and the first part is coupled to the first radiator, and the first part is provided with a first hollow groove; a second part, the second part is located in the first hollow groove, and there is an annular gap between the first part and the second part.

[0008] Optionally, the antenna module includes: a reflection layer, the reflection layer is adjacent to the feed antenna, and the reflection layer is located on a side of the feed antenna away from the first radiator.

[0009] Optionally, the antenna module further includes: a metal ring, which is arranged adjacent to the first radiator, and the metal ring is located on a side of the first radiator away from the feeding antenna. The metal ring is provided with a second hollow groove, and the second radiator is located in the second hollow groove; a plurality of metal columns, which are arranged at intervals along the circumference of the metal ring, and one end of the metal column is connected to the metal ring, and the other end of the metal column is connected to the reflection layer.

[0010] Optionally, the antenna module further includes: a first dielectric plate, which is arranged on a side of the feeding antenna away from the first radiator; a second dielectric plate, which is arranged between the feeding antenna and the first radiator; a third dielectric plate, which is arranged between the first radiator and the second radiator.

[0011] Optionally, a plurality of serrations are arranged at intervals on the circumference of the first radiator.

[0012] Optionally, the feeding antenna includes: a metal layer, which is arranged adjacent to the first radiator and is coupled to the first radiator. The metal layer is provided with a slit groove; a feeding metal, which is arranged adjacent to the metal layer, and the feeding metal is located on a side of the metal layer away from the first radiator, and the feeding metal is coupled to the metal layer.

[0013] Optionally, the feeding metal and the slit groove at least partially overlap in the thickness direction of the second metal layer.

[0014] Optionally, the slit groove includes: a first groove body, which is arranged on the metal layer; a second groove body, which is arranged on the metal layer, and the middle part of the second groove body is connected to one end of the first groove body; a third groove body, which is arranged on the metal layer, and the middle part of the third groove body is connected to one end of the first groove body away from the second groove body.

[0015] Optionally, the feeding metal includes: a feeding piece, which is arranged adjacent to the metal layer, and the feeding piece is located on a side of the metal layer away from the first radiator, and the feeding piece is coupled to the metal layer; a feeding probe, which is arranged on a side of the feeding piece away from the metal layer.

[0016] Optionally, the length direction of the feeding piece is perpendicular to the length direction of the first groove body.

[0017] Optionally, the length direction of the second groove body is perpendicular to the length direction of the first groove body; and / or the length direction of the third groove body is perpendicular to the length direction of the first groove body.

[0018] A second aspect of the present disclosure provides a terminal device, including: the antenna module provided in the first aspect of the present disclosure.

[0019] A third aspect of the present disclosure provides a satellite, including: the antenna module provided in the first aspect of the present disclosure.

[0020] The technical solutions provided by the present disclosure may include the following beneficial effects:

[0021] Since the signal phase difference between two orthogonally arranged feeding antennas is a set value, the two feeding antennas can cooperate to radiate a first circularly polarized wave. At the same time, since the first radiator is adjacent to the feeding antenna and they are coupled, the first radiator can parasitically generate a second circularly polarized wave under the excitation of the first circularly polarized wave by using its own shape, size, etc. Thus, through the cooperation of the first circularly polarized wave and the second circularly polarized wave covering different frequency bands, the bandwidth of the antenna module is effectively broadened, thereby effectively improving the performance of the antenna module and meeting the usage requirements.

[0022] The additional aspects and advantages of the present disclosure will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above-mentioned and / or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0024] Figure 1 is a top-down perspective view of the inside of the antenna module proposed in an embodiment of the present disclosure;

[0025] Figure 2 is a top view of the feeding antenna in the antenna module proposed in an embodiment of the present disclosure;

[0026] Figure 3 is a bottom-up perspective view of the inside of the antenna module proposed in an embodiment of the present disclosure;

[0027] Figure 4 is a top-down perspective view of the antenna module proposed in an embodiment of the present disclosure;

[0028] Figure 5 is an S-parameter simulation curve graph of the antenna module proposed in an embodiment of the present disclosure;

[0029] Figure 6 is the 27.5 GHz axial ratio direction diagram of the antenna module proposed in an embodiment of the present disclosure;

[0030] Figure 7 is the axial ratio pattern at 29.25 GHz of the antenna module proposed in an embodiment of the present disclosure;

[0031] Figure 8 is the axial ratio pattern at 31.1 GHz of the antenna module proposed in an embodiment of the present disclosure;

[0032] Figure 9 is the active VSWR curve when theta is scanned to 60° and 70° at Phi = 0° in the antenna module proposed in an embodiment of the present disclosure;

[0033] Figure 10 is the active VSWR curve when theta is scanned to 60° and 70° at Phi = 45° in the antenna module proposed in an embodiment of the present disclosure;

[0034] Figure 11 is the active VSWR curve when theta is scanned to 60° and 70° at Phi = 90° in the antenna module proposed in an embodiment of the present disclosure;

[0035] As shown in the figure: 1. Feeding antenna;

[0036] 11. Metal layer;

[0037] 12. Feeding metal, 121. Feeding piece, 122. Feeding probe;

[0038] 13. Slot, 131. First slot body, 132. Second slot body, 133. Third slot body;

[0039] 2. First radiator;

[0040] 3. Second radiator, 31. First part, 32. Second part, 33. Annular slot;

[0041] 4. Reflective layer, 5. Metal ring, 6. Metal column, 7. First dielectric plate, 8. Second dielectric plate, 9. Third dielectric plate, 10. Sawtooth, 100. Second hollow slot. Detailed implementation manners

[0042] The embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0043] AsFigure 1 , Figure 2 and Figure 3 As shown in and

[0044] , an antenna module is proposed in an embodiment of the present disclosure, which includes two feeding antennas 1 arranged orthogonally and a first radiator 2. The signal phase difference between the two feeding antennas 1 is a set value. The two feeding antennas 1 are used to form a first circularly polarized wave. The first radiator 2 is adjacent to the feeding antenna 1 and is coupled to the feeding antenna 1. The first radiator 2 is used to form a second circularly polarized wave under the excitation of the first circularly polarized wave. Among them, the first circularly polarized wave and the second circularly polarized wave respectively cover different frequency bands.

[0044] It can be understood that since the signal phase difference between the two feeding antennas 1 arranged orthogonally is a set value, the two feeding antennas 1 cooperate to radiate a first circularly polarized wave. At the same time, since the first radiator 2 is adjacent to the feeding antenna 1 and is coupled to the feeding antenna 1, the first radiator 2 can parasitically generate a second circularly polarized wave under the excitation of the first circularly polarized wave by using its own shape, size, etc. Thus, through the cooperation of the first circularly polarized wave and the second circularly polarized wave covering different frequency bands, the bandwidth of the antenna module is effectively broadened, thereby effectively improving the performance of the antenna module and meeting the usage requirements.

[0045] It should be noted that the two feeding antennas 1 cooperate to radiate a first circularly polarized wave covering the first frequency band. The specific type of the feeding antenna 1 can be set according to actual needs and is not limited thereto. Among them, when the two feeding antennas 1 generate a first circularly polarized wave, an electromagnetic field is formed around them, and the first radiator 2 is located in this electromagnetic field, thereby parasitically generating a second circularly polarized wave.

[0046] The set value can be set according to actual needs and is not limited thereto. For example, the set value can be 90 degrees.

[0047] The first radiator 2 is used to generate a second circularly polarized wave covering the second frequency band, thereby enriching the frequency band of the antenna module and broadening the bandwidth of the antenna module. The specific type of the first radiator 2 can be set according to actual needs and is not limited thereto. For example, the first radiator 2 can be a metal patch, and the shape of the first radiator 2 can be square, circular, etc.

[0048] A circularly polarized wave is a plane wave in which the endpoint of the electric field vector traces a circular path over time. The antenna module can radiate a first circularly polarized wave and a second circularly polarized wave that cover different frequency bands. The first frequency band covered by the first circularly polarized wave and the second frequency band covered by the second circularly polarized wave can be set according to actual needs, and there is no limitation on this. Among them, the antenna module can be applied in millimeter-wave planar phased array antennas, 5G millimeter-wave phased array antennas, etc. Application scenarios can include low-earth orbit satellites, high-earth orbit high-throughput satellite mobile communication devices, 5G millimeter-wave intelligent base station communication devices, etc.

[0049] As Figure 1 shown, in some embodiments, the antenna module further includes a second radiator 3. The second radiator 3 is arranged adjacent to the first radiator 2, and the second radiator 3 is located on the side of the first radiator 2 away from the feeding antenna 1. The second radiator 3 is coupled to the first radiator 2. The second radiator 3 is used to form a third circularly polarized wave under the excitation of the second circularly polarized wave. Among them, the first circularly polarized wave, the second circularly polarized wave, and the third circularly polarized wave respectively cover different frequency bands.

[0050] It can be understood that since the second radiator 3 is arranged adjacent to the first radiator 2 and the second radiator 3 is coupled to the first radiator 2, the second radiator 3 can parasitically generate a third circularly polarized wave under the excitation of the second circularly polarized wave by using its own shape, size, etc. Thus, through the cooperation of the first circularly polarized wave, the second circularly polarized wave, and the third circularly polarized wave that cover different frequency bands, the bandwidth of the antenna module is effectively broadened, thereby effectively improving the performance of the antenna module and meeting the usage requirements.

[0051] It should be noted that the second radiator 3 is used to generate a third circularly polarized wave that covers the third frequency band, thereby enriching the frequency band of the antenna module and broadening the bandwidth of the antenna module. The specific type of the second radiator 3 can be set according to actual needs, and there is no limitation on this. By way of example, the second radiator 3 can be a metal patch, and the shape of the second radiator 3 can be square, circular, etc.

[0052] The third frequency band covered by the third circularly polarized wave can be set according to actual needs, and there is no limitation on this.

[0053] Two feeding antennas 1 arranged orthogonally, the first radiator 2, and the second radiator 3 are arranged in sequence and coupled. Among them, the distances between the feeding antenna 1, the first radiator 2, and the second radiator 3 can be set according to actual needs, and there is no limitation on this.

[0054] As Figure 1 、 Figure 3 and Figure 4As shown, in some embodiments, the second radiator 3 includes a first portion 31 and a second portion 32. The first portion 31 is disposed adjacent to the first radiator 2, and the first portion 31 is located on a side of the first radiator 2 away from the feeding antenna 1. The first portion 31 is coupled to the first radiator 2. The first portion 31 is provided with a first hollow groove, the second portion 32 is located within the first hollow groove, and an annular slit 33 is provided between the first portion 31 and the second portion 32.

[0055] It can be understood that through the cooperation of the first portion 31 and the second portion 32, the second radiator 3 forms a metal structure provided with the annular slit 33, thereby facilitating the second radiator 3 to adjust its impedance by using the annular slit 33, and further ensuring the stable formation of the third circularly polarized wave.

[0056] It should be noted that the first portion 31 is used to constitute the second radiator 3 provided with the annular slit 33. The specific type of the first portion 31 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the first portion 31 can be a metal patch in the shape of a square, a ring, etc., and the first hollow groove thereon can be square, circular, etc.

[0057] The second portion 32 is used to constitute the second radiator 3 provided with the annular slit 33. The specific type of the second portion 32 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the second portion 32 can be a metal patch in the shape of a square, a circle, etc. The center of the second portion 32 coincides with the center of the first portion 31. Wherein, when the first hollow groove of the first portion 31 is circular and the second portion 32 is circular, the annular slit 33 is a circular ring structure.

[0058] As Figure 1 shown, in some embodiments, the antenna module includes a reflection layer 4. The reflection layer 4 is disposed adjacent to the feeding antenna 1, and the reflection layer 4 is located on a side of the feeding antenna 1 away from the first radiator 2.

[0059] It can be understood that since the reflection layer 4 is disposed adjacent to the feeding antenna 1 and the reflection layer 4 is located on a side of the feeding antenna 1 away from the first radiator 2, when the feeding antenna 1 radiates the first circularly polarized wave, the reflection layer 4 can reflect the electromagnetic wave on the side of the radiation antenna close to the reflection layer 4 to the first radiator 2. Thus, not only is the directional radiation of the antenna module realized, ensuring a strong radiation intensity of the first circularly polarized wave, but also it is ensured that the first radiator 2 can stably radiate the second circularly polarized wave and the second radiator 3 can stably radiate the third circularly polarized wave.

[0060] It should be noted that the reflection layer 4 can not only be used to reflect electromagnetic waves, but also can be used as a grounding layer. The specific type of the reflection layer 4 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the reflection layer 4 can be a metal plate.

[0061] As Figure 1 , Figure 3 and Figure 4 shown, in some embodiments, the antenna module further includes a metal ring 5 and a plurality of metal posts 6. The metal ring 5 is disposed adjacent to the first radiator 2, and the metal ring 5 is located on a side of the first radiator 2 away from the feeding antenna 1. The metal ring 5 is provided with a second hollow groove 100. The second radiator 3 is located within the second hollow groove 100. The plurality of metal posts 6 are spaced along the circumference of the metal ring 5, and one end of the metal post 6 is connected to the metal ring 5, and the other end of the metal post 6 is connected to the reflection layer 4.

[0062] It can be understood that since the second radiator 3 is located within the second hollow groove 100 of the metal ring 5, the metal ring 5 forms a shielding isolation region around the second radiator 3, and at the same time, it can also avoid affecting the radiation of the third circularly polarized wave by the second radiator 3. At the same time, since one end of the metal post 6 is connected to the metal ring 5 and the other end of the metal post 6 is connected to the reflection layer 4, the plurality of metal posts 6 form a shielding isolation wall around the feeding antenna 1, the first radiator 2, and the second radiator 3. Thus, the mutual coupling interference problem between the antenna module and other antennas is effectively reduced, and thus the performance of the antenna module is effectively improved.

[0063] It should be noted that the metal ring 5 is used to form a shielding isolation region around the second radiator 3. The specific type of the metal ring 5 can be set according to actual needs, and there is no limitation thereto. By way of example, the metal ring 5 can be an annular metal sheet, the metal ring 5 can be square, circular, etc., and the second hollow groove 100 of the metal ring 5 can be square, circular, etc.

[0064] The metal post 6 is used to form a shielding isolation wall around the feeding antenna 1, the first radiator 2, and the second radiator 3. The specific type of the metal post 6 can be set according to actual needs, and there is no limitation thereto. By way of example, the metal post 6 can be a metal via. Among them, the plurality of metal posts 6 can be equally spaced or non-equally spaced.

[0065] As Figure 4 shown, in some embodiments, the antenna module further includes a first dielectric plate 7, a second dielectric plate 8, and a third dielectric plate 9. The first dielectric plate 7 is disposed on a side of the feeding antenna 1 away from the first radiator 2. The second dielectric plate 8 is disposed between the feeding antenna 1 and the first radiator 2. The third dielectric plate 9 is disposed between the first radiator 2 and the second radiator 3.

[0066] It can be understood that since the first dielectric plate 7 is disposed on the side of the feeding antenna 1 away from the first radiator 2, and the second dielectric plate 8 is disposed between the feeding antenna 1 and the first radiator 2, the feeding antenna 1 and the first radiator 2 can be adjacently disposed and coupled, thereby ensuring the stable radiation of the first radiator 2 to the second circularly polarized wave. At the same time, since the third dielectric plate 9 is disposed between the first radiator 2 and the second radiator 3, the first radiator 2 and the second radiator 3 can be adjacently disposed and coupled, thereby ensuring the stable radiation of the second radiator 3 to the third circularly polarized wave.

[0067] It should be noted that the first dielectric plate 7 is used to carry components such as the feeding antenna 1, the second dielectric plate 8 is used to carry components such as the feeding antenna 1, and the third dielectric plate 9 is used to carry components such as the first radiator 2 and the second radiator 3. The specific types of the first dielectric plate 7, the second dielectric plate 8, and the third dielectric plate 9 can be set according to actual needs, and no limitation is imposed thereon. Among them, the first dielectric plate 7, the second dielectric plate 8, and the third dielectric plate 9 are all made of insulating materials.

[0068] Among them, the connection of the first dielectric plate 7, the second dielectric plate 8, and the third dielectric plate 9 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the first dielectric plate 7 and the second dielectric plate 8 can be bonded through a first bonding plate, the second dielectric plate 8 and the third dielectric plate 9 can be bonded through a second bonding plate, and the first radiator 2 is located between the second bonding plate and the third dielectric plate 9. Part or all of the metal column 6 is embedded around the overall structure formed by the first dielectric plate 7, the first bonding plate, the second dielectric plate 8, the second bonding plate, and the third dielectric plate 9.

[0069] Such as Figure 1 and Figure 3 As shown in the figure, in some embodiments, a plurality of serrations 10 are disposed at intervals in the circumferential direction of the first radiator 2.

[0070] It can be understood that the larger the boundary size of the first radiator 2, the lower the frequency band of the second circularly polarized wave generated by the first radiator 2. Therefore, through the plurality of serrations 10 in the circumferential direction of the first radiator 2, the boundary size of the first radiator 2 is greatly increased, so that the second circularly polarized wave radiated by the first radiator 2 can cover a lower operating frequency band, and at the same time, the first radiator 2 has a smaller occupied area, thereby achieving the balance between the miniaturization of the antenna module and the low frequency band.

[0071] Moreover, through the plurality of serrations 10 in the circumferential direction of the first radiator 2, a larger distance is provided between the boundary of the first radiator 2 and the boundary of the antenna module, so that the isolation degree between the antenna module and other antennas is higher, thereby effectively improving the performance of the antenna module.

[0072] It should be noted that the serrations 10 are used to increase the boundary size of the first radiator 2 while reducing the distance between the boundary of the first radiator 2 and the boundary of the antenna module. The specific type of the serrations 10 can be set according to actual needs and is not limited thereto. By way of example, the serrations 10 can be rectangles, triangles, etc., and the serrations 10 and the first radiator 2 are integrally formed.

[0073] As Figure 1 , Figure 2 and Figure 3 shown, in some embodiments, the feeding antenna 1 includes a metal layer 11 and a feeding metal 12. The metal layer 11 is disposed adjacent to the first radiator 2 and is coupled to the first radiator 2. The metal layer 11 is provided with a slot 13. The feeding metal 12 is disposed adjacent to the metal layer 11 and is located on a side of the metal layer 11 away from the first radiator 2, and the feeding metal 12 is coupled to the metal layer 11.

[0074] It can be understood that since the feeding metal 12 is disposed adjacent to the metal layer 11 and the feeding metal 12 is coupled to the metal layer 11, the metal layer 11 and the feeding metal 12 form a structure of a slot antenna. Thus, when an excitation signal is fed into the feeding metal 12, a radiation signal can be radiated by using the slot 13 of the metal layer 11. Therefore, when the phase difference between the excitation signals of the two feeding antennas 1 is a set value, the two feeding antennas 1 can radiate a first circularly polarized wave, thereby meeting the usage requirements.

[0075] It should be noted that the metal layer 11 is used to form the slot 13. The specific type of the metal layer 11 can be set according to actual needs and is not limited thereto. By way of example, the metal layer 11 can be a metal plate, and the metal layer 11 is located between the first bonding plate and the second dielectric layer. Among them, the two feeding antennas 1 can share the same metal layer 11.

[0076] The feeding metal 12 is used to feed an excitation signal. The specific type of the feeding metal 12 can be set according to actual needs and is not limited thereto. Among them, the metal layer 11 and the feeding metal 12 form a structure of a slot antenna.

[0077] The relative position between the feeding metal 12 and the slot 13 can be set according to actual needs and is not limited thereto.

[0078] As Figure 1 , Figure 2 and Figure 3 shown, in some embodiments, the feeding metal 12 and the slot 13 at least partially overlap along the thickness direction of the metal layer 11.

[0079] It can be understood that since the feeding metal 12 and the slot 13 overlap at least partially in the thickness direction of the metal layer 11, the metal layer 11 and the feeding metal 12 form the structure of a slot antenna. Thus, when an excitation signal is fed into the feeding metal 12, the slot 13 of the metal layer 11 can be utilized to efficiently radiate a radiation signal. Therefore, when the phase difference between the excitation signals of the two feeding antennas 1 is a set value, the two feeding antennas 1 can efficiently radiate a first circularly polarized wave, thereby meeting the usage requirements.

[0080] As Figure 1 shown, in some embodiments, the slot 13 includes a first slot body 131, a second slot body 132, and a third slot body 133. The first slot body 131 is disposed on the metal layer 11, the second slot body 132 is disposed on the metal layer 11, and the middle of the second slot body 132 is connected to one end of the first slot body 131. The third slot body 133 is disposed on the metal layer 11, and the middle of the third slot body 133 is connected to the end of the first slot body 131 away from the second slot body 132.

[0081] It can be understood that through the arrangement of the first slot body 131, the second slot body 132, and the third slot body 133, the "H"-shaped slot 13 is formed, which facilitates the metal layer 11 to adjust its impedance by using the "H"-shaped slot 13, and further ensures the stable formation of the first circularly polarized wave.

[0082] It should be noted that the specific types of the first slot body 131, the second slot body 132, and the third slot body 133 can be set according to actual needs, and no limitation is imposed thereon. Among them, the first slot body 131, the second slot body 132, and the third slot body 133 with different shapes and sizes can match different impedances and have different coupling degrees. Thus, the coupling degree in the feeding antenna 1 can be improved by adjusting the shape and size of the slot 13.

[0083] The relative positions of the first slot body 131, the second slot body 132, and the third slot body 133 can be set according to actual needs, and no limitation is imposed thereon.

[0084] As Figure 1 shown, in some embodiments, the length direction of the second slot body 132 is perpendicular to the length direction of the first slot body 131, and / or the length direction of the third slot body 133 is perpendicular to the length direction of the first slot body 131.

[0085] As Figure 3 shown, in some embodiments, the feeding metal 12 includes a feeding piece 121 and a feeding probe 122. The feeding piece 121 is disposed adjacent to the metal layer 11, and the feeding piece 121 is located on the side of the metal layer 11 away from the first radiator 2. The feeding piece 121 is coupled to the metal layer 11, and the feeding probe 122 is disposed on the side of the feeding piece 121 away from the metal layer 11.

[0086] It can be understood that since the feeding piece 121 and the metal layer 11 are arranged adjacent to each other and the feeding piece 121 is coupled with the metal layer 11, when the feeding probe 122 feeds in an excitation signal, the feeding piece 121 can radiate a radiation signal through the slot 13 of the metal layer 11. Thus, when the phase difference of the excitation signals of the two feeding antennas 1 is a set value, the two feeding antennas 1 can radiate a first circularly polarized wave, thereby meeting the usage requirements.

[0087] It should be noted that the feeding piece 121 is used to couple the excitation signal to the slot 13 of the metal layer 11. The specific type of the feeding piece 121 can be set according to actual needs, and there is no limitation in this regard. By way of example, the feeding piece 121 can be a metal sheet, and the feeding piece 121 can be rectangular, elliptical, etc. The feeding piece 121 is located between the first dielectric plate 7 and the first bonding plate. Among them, feeding pieces 121 with different shapes and sizes have different coupling degrees, and the coupling degree in the feeding antenna 1 can be improved by adjusting the shape and size of the feeding piece 121.

[0088] Among them, the feeding piece 121 and the first slot 131 can partially overlap in the thickness direction of the metal layer 11.

[0089] Such as Figure 1 and Figure 3 shown, in some embodiments, the length direction of the feeding piece 121 is perpendicular to the length direction of the first slot 131.

[0090] The feeding probe 122 is used to conduct the excitation signal to the feeding piece 121. The specific type of the feeding probe 122 can be set according to actual needs, and there is no limitation in this regard. By way of example, the feeding probe 122 can be a metal via. The feeding probe 122 penetrates the first dielectric plate 7, and the reflective layer 4 is provided with a through hole for the feeding probe 122 to pass through.

[0091] Among them, the distances from the feeding points of different feeding antennas 1 to the center of the first radiator 2 have different axial ratios and impedances. Therefore, by adjusting the distance from the feeding point of the feeding antenna 1 to the center of the first radiator 2, the axial ratio and impedance of the antenna module can be improved.

[0092] Based on the antenna module of this embodiment for simulation, the simulation results are as follows:

[0093] Such as Figure 5 shown, Figure 5 is the S-parameter simulation curve graph. The operating bandwidth of the antenna module of this embodiment has S11 less than -15 dB within a frequency range exceeding 12%.

[0094] According to Figure 5 the simulation parameters in, the following Table 1 is obtained:

[0095]

[0096] As Figure 6 , Figure 7 and Figure 8 shown Figure 6 Figure 27.5GHz axial ratio pattern of the antenna module of this embodiment Figure 7 Figure 29.25GHz axial ratio pattern of the antenna module of this embodiment Figure 8 Figure 31.1GHz axial ratio pattern of the antenna module of this embodiment. According to Figure 6 , Figure 7 and Figure 8 the simulation parameters in, the following Table 2 is obtained

[0097]

[0098] As Figure 9 , Figure 10 and Figure 11 shown Figure 9 is the active VSWR curve when Phi = 0° and theta is scanned to 60° and 70° Figure 10 is the active VSWR curve when Phi = 45° and theta is scanned to 60° and 70° Figure 11 is the active VSWR curve when Phi = 90° and theta is scanned to 60° and 70°. According to Figure 9 , Figure 10 and Figure 11 the simulation parameters in, the following Table 3 is obtained

[0099] Azimuth axis angle Active VSWR at 60° and 70° scanning Simulation results Phi = 0° ≤3.11 Good Phi = 45° ≤3.07 Good Phi = 90° ≤4.18 Good

[0100] The operating frequency range of the antenna module of this embodiment reaches 12%, the absolute bandwidth is greater than 3.5GHz, the axial ratio operating frequency also reaches 12%, the absolute bandwidth is greater than 3.5GHz, and at the same time, the beam width with an axial ratio less than 3.5dB reaches a range of 140°. Therefore, compared with the antenna with only about 3% operating bandwidth in the prior art, the antenna module of this embodiment has higher performance.

[0101] This embodiment of the present disclosure also proposes a terminal device, including: the antenna module as in this embodiment.

[0102] It can be understood that, since the signal phase difference between the two feeding antennas 1 arranged orthogonally is a set value, the two feeding antennas 1 cooperate to radiate a first circularly polarized wave. At the same time, since the first radiator 2 is adjacent to the feeding antenna 1 and the first radiator 2 is coupled to the feeding antenna 1, the first radiator 2 can parasitically generate a second circularly polarized wave under the excitation of the first circularly polarized wave by using its own shape, size, etc. Thus, through the cooperation of the first circularly polarized wave and the second circularly polarized wave covering different frequency bands, the bandwidth of the antenna module is effectively broadened, thereby effectively improving the performance of the terminal device and meeting the usage requirements.

[0103] It should be noted that the specific type of the terminal device can be set according to actual needs, and there is no limitation in this regard. By way of example, the terminal device can be a mobile phone, a tablet computer, a wearable intelligent device, a vehicle-mounted terminal, etc.

[0104] The embodiment of the present disclosure also proposes a satellite, including: the antenna module as in this embodiment.

[0105] It can be understood that, since the signal phase difference between the two feeding antennas 1 arranged orthogonally is a set value, the two feeding antennas 1 cooperate to radiate a first circularly polarized wave. At the same time, since the first radiator 2 is adjacent to the feeding antenna 1 and the first radiator 2 is coupled to the feeding antenna 1, the first radiator 2 can parasitically generate a second circularly polarized wave under the excitation of the first circularly polarized wave by using its own shape, size, etc. Thus, through the cooperation of the first circularly polarized wave and the second circularly polarized wave covering different frequency bands, the bandwidth of the antenna module is effectively broadened, thereby effectively improving the performance of the satellite and meeting the usage requirements.

[0106] It should be noted that the specific type of the satellite can be set according to actual needs, and there is no limitation in this regard. By way of example, the satellite can be a low-earth orbit satellite, a high-earth orbit high-throughput satellite, etc.

[0107] In the description of the present disclosure, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0108] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present disclosure includes additional implementations, where the functions can be executed in a way that is not shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the functions involved, which should be understood by those skilled in the technical field to which the embodiments of the present disclosure belong.

[0109] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0110] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An antenna module, characterized in that, it includes: Two feed antennas arranged orthogonally, with a set value of signal phase difference between the two feed antennas, and the two feed antennas are used to form a first circularly polarized wave; A first radiator, the first radiator is adjacent to the feed antenna, and the first radiator is coupled to the feed antenna, and the first radiator is used to form a second circularly polarized wave under the excitation of the first circularly polarized wave; Wherein, the first circularly polarized wave and the second circularly polarized wave respectively cover different frequency bands.

2. The antenna module according to claim 1, characterized in that, the antenna module further includes: A second radiator, the second radiator is adjacent to the first radiator, and the second radiator is located on the side of the first radiator away from the feed antenna, and the second radiator is coupled to the first radiator, and the second radiator is used to form a third circularly polarized wave under the excitation of the second circularly polarized wave; Wherein, the first circularly polarized wave, the second circularly polarized wave and the third circularly polarized wave respectively cover different frequency bands.

3. The antenna module according to claim 2, characterized in that, the second radiator includes: A first part, the first part is adjacent to the first radiator, and the first part is located on the side of the first radiator away from the feed antenna, and the first part is coupled to the first radiator, and the first part is provided with a first hollow groove; A second part, the second part is located in the first hollow groove, and there is an annular gap between the first part and the second part.

4. The antenna module according to claim 2, characterized in that, the antenna module includes: A reflection layer, the reflection layer is adjacent to the feed antenna, and the reflection layer is located on the side of the feed antenna away from the first radiator.

5. The antenna module according to claim 4, characterized in that, the antenna module further includes: A metal ring, the metal ring is adjacent to the first radiator, and the metal ring is located on the side of the first radiator away from the feed antenna, the metal ring is provided with a second hollow groove, and the second radiator is located in the second hollow groove; A plurality of metal posts, the plurality of metal posts are arranged at intervals along the circumference of the metal ring, and one end of the metal post is connected to the metal ring, and the other end of the metal post is connected to the reflection layer.

6. The antenna module according to claim 2, characterized in that, the antenna module further includes: A first dielectric plate, the first dielectric plate is arranged on the side of the feed antenna away from the first radiator; A second dielectric plate, the second dielectric plate is arranged between the feed antenna and the first radiator; A third dielectric plate, the third dielectric plate is arranged between the first radiator and the second radiator.

7. The antenna module according to claim 1, characterized in that, a plurality of spaced sawteeth are arranged on the circumference of the first radiator.

8. The antenna module according to any one of claims 1-7, characterized in that, the feed antenna includes: A metal layer, the metal layer is disposed adjacent to the first radiator, and the metal layer is coupled to the first radiator, and a slot is provided in the metal layer; A feeding metal, the feeding metal is disposed adjacent to the metal layer, and the feeding metal is located on a side of the metal layer away from the first radiator, and the feeding metal is coupled to the metal layer.

9. The antenna module according to claim 8, wherein, at least a part of the feeding metal and the slot overlap along the thickness direction of the second metal layer.

10. The antenna module according to claim 8, wherein, the slot includes: a first slot body, the first slot body is provided on the metal layer; a second slot body, the second slot body is provided on the metal layer, and a middle part of the second slot body is connected to one end of the first slot body; a third slot body, the third slot body is provided on the metal layer, and a middle part of the third slot body is connected to an end of the first slot body away from the second slot body.

11. The antenna module according to claim 10, wherein, the feeding metal includes: a feeding piece, the feeding piece is disposed adjacent to the metal layer, and the feeding piece is located on a side of the metal layer away from the first radiator, and the feeding piece is coupled to the metal layer; a feeding probe, the feeding probe is provided on a side of the feeding piece away from the metal layer.

12. The antenna module according to claim 11, wherein, a length direction of the feeding piece is perpendicular to a length direction of the first slot body.

13. The antenna module according to claim 10, wherein, a length direction of the second slot body is perpendicular to a length direction of the first slot body; and / or a length direction of the third slot body is perpendicular to a length direction of the first slot body.

14. A terminal device, wherein, comprising: the antenna module according to any one of claims 1-13.

15. A satellite, wherein, comprising: the antenna module according to any one of claims 1-13.

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