Satellite communication and beidou anti-interference fusion array antenna

Abstract

This utility model relates to a satellite communication and BeiDou anti-interference fusion array antenna, including an antenna mounting array disk. The antenna mounting array disk is provided with multiple antenna elements, each antenna element including at least one Tiantong (Skycom) unit antenna and at least one BeiDou unit antenna. The unit antennas in each antenna element are stacked. This utility model stacks Tiantong and BeiDou unit antennas to form an antenna array element. By setting multiple antenna elements on the antenna mounting array disk, a multi-element Tiantong and multi-element BeiDou antenna layout can be achieved in a limited space, allowing the Tiantong and BeiDou antennas to be integrated into a single antenna array.

Description

Technical Field

[0001] This utility model relates to the field of array antenna technology, and in particular to a satellite communication and BeiDou anti-interference integrated array antenna. Background Technology

[0002] Satellite communication and satellite navigation are crucial components of modern space technology, widely used globally in military, transportation, aerospace, maritime, and disaster response fields. With technological advancements, their integration has become a significant trend in current satellite applications. Satellite communication provides global data and voice communication, while satellite navigation offers precise positioning, timing, and navigation services. Combining the two enhances the accuracy and reliability of communication systems, while simultaneously improving the coverage and anti-interference capabilities of navigation systems.

[0003] The integration of satellite communication and satellite navigation is an important direction for the future development of space technology, which can improve the reliability, accuracy, and anti-interference capabilities of communication and positioning systems. Among these, the antenna, as a crucial component of the satellite signal transceiver system, is particularly vital, determining the proper functioning and overall performance of the entire system.

[0004] Currently, most satellite communication antennas and anti-jamming navigation antennas are designed separately. To simultaneously provide satellite communication and BeiDou anti-jamming satellite navigation functions, two types of antennas need to be installed, which takes up a lot of space. Therefore, designing an antenna that can simultaneously provide satellite communication and BeiDou anti-jamming satellite navigation functions is of great significance. Utility Model Content

[0005] To address at least one of the aforementioned technical problems, this utility model proposes a satellite communication and BeiDou anti-interference fusion array antenna.

[0006] According to some embodiments of the present invention, a satellite communication and BeiDou anti-interference fusion array antenna is provided, including an antenna mounting array disk, on which multiple antenna array elements are provided, each antenna array element including at least one Tiantong unit antenna and at least one BeiDou unit antenna, and the unit antennas in each antenna array element are stacked.

[0007] Based on the above scheme, the Tiantong unit antenna and the Beidou unit antenna are stacked to form an antenna array element. Multiple antenna array elements are set on the antenna mounting array disk, which can realize the layout of multi-element Tiantong antenna and multi-element Beidou antenna in a limited space, so that the Tiantong antenna and the Beidou antenna are integrated into the same array antenna.

[0008] In some possible implementations, the antenna array element includes a central array element, which is installed at the center of the top of the antenna mounting array disk. The central array element includes a BeiDou L-cell antenna, a TianTong S-cell receiving antenna, and a BeiDou S-cell antenna.

[0009] Based on the above scheme, by setting up Tiantong antenna and Beidou antenna in the central array element, the system can support different functions, thereby improving the system's flexibility and applicability.

[0010] In some possible implementations, the antenna array element further includes a first array element, which includes a Tiantong-S receiving unit antenna, a Tiantong-S transmitting unit antenna, and a Beidou-L unit antenna. The first array element is distributed circumferentially along the central array element, and the distance between each first array element and the central array element is equal.

[0011] Based on the above scheme, by setting up first array elements distributed along the central array element axis, multiple first array elements form a multi-array element Tiantong S transmitting array, and the first array elements and the central array element form a multi-array element Tiantong S receiving array and a multi-array element Beidou L array.

[0012] In some possible implementations, the antenna array element further includes a second array element, which includes a Tiantong-S receiving unit antenna, a Tiantong-S transmitting unit antenna, and a Beidou-S unit antenna. The second array elements are distributed circumferentially along the central array element, and the distance between each second array element and the central array element is equal. The second array elements and the first array element are distributed alternately.

[0013] Based on the above scheme, both the second array element and the first array element include Tiantong-S receiving unit antenna and Tiantong-S transmitting unit antenna. The increase in the number of Tiantong unit antennas helps to improve the gain and anti-interference capability of the Tiantong antenna array. The second array element and the central array element form a multi-element Beidou-S array. The second array element and the first array element are distributed alternately, which can reduce the interference between the Beidou transmitting antenna and the Beidou receiving antenna and ensure the stability of the system.

[0014] In some possible implementations, the number of the first array elements is four, and the adjacent first array elements form a right angle with the central array element; and / or, the number of the second array elements is four, and the adjacent second array elements form a right angle with the central array element.

[0015] Based on the above scheme, a 9-element satellite communication S-band receiving array, an 8-element satellite communication S-band transmitting array, a 5-element BeiDou S-band receiving anti-interference array, and a 5-element BeiDou L-band transmitting array can be realized. It can simultaneously achieve beam scanning for Tiantong S-band transmission and reception, with an off-axis angle of ±60°. It also has anti-interference capability for the BeiDou S-band and beam combining and beam scanning capability for the BeiDou L-band. The antennas in each frequency band have high passive gain and very high combined gain, thereby ensuring the equivalent omnidirectional radiated power and G / T value of the system.

[0016] In some possible implementations, the central array element may further include a BeiDou B2 unit antenna, a BeiDou B3 unit antenna, and a BeiDou B1 unit antenna.

[0017] Based on the above scheme, the central array element also integrates multi-band unit antennas, further enriching the system's functional applications and improving its comprehensiveness and compatibility.

[0018] In some possible implementations, the central array element comprises, from bottom to top, a first dual-frequency unit antenna, a second dual-frequency unit antenna, a Tiantong-S receiving unit antenna, and a Beidou-S unit antenna; wherein, the first dual-frequency unit antenna is a four-feed antenna, which includes a Beidou B2 unit antenna and a Beidou B3 unit antenna; the second dual-frequency unit antenna is a four-feed antenna, which includes a Beidou B1 unit antenna and a Beidou L unit antenna; the Tiantong-S receiving unit antenna is a dual-feed antenna; and the Beidou-S unit antenna is a single-feed antenna.

[0019] Based on the above scheme, multi-band combined antennas can be realized by using dual-frequency unit antennas, which helps to reduce the space volume occupied by the central array element, improve anti-interference performance and enhance the combined gain.

[0020] In some possible implementations, the side of the antenna mounting array has a bevel near the second array element, and the thickness of the bevel decreases as the distance from the second array element increases.

[0021] Based on the above scheme, the second array element is equipped with a Beidou S-cell antenna. By setting the bevel, the stability of the Beidou S-cell antenna signal reception can be ensured, and the anti-interference performance can be improved.

[0022] In some possible implementations, the antenna mounting array is further provided with an isolation suppressor located between the first array element and the center array element.

[0023] Based on the above scheme, the isolation suppressor can reduce the mutual coupling between the central array element and the first array element, thus ensuring signal stability.

[0024] In some possible implementations, the isolation suppressor includes two isolation suppressor plates connected at both ends, the two isolation suppressor plates being perpendicular to each other, the length of each isolation suppressor plate being greater than the length of the first array element, and the height of each isolation suppressor plate being greater than the height of the first array element.

[0025] Based on the above scheme, by setting an isolation and suppression plate with a length and height greater than the first array element, the anti-interference effect can be guaranteed.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the present invention.

[0027] Other features and aspects of the present invention will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions and advantages in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a front view of a satellite communication and BeiDou anti-interference fusion array antenna according to an embodiment of the present invention;

[0030] Figure 2 A side view of a satellite communication and BeiDou anti-interference fusion array antenna according to an embodiment of the present invention is shown;

[0031] Figure 3 A three-dimensional structural diagram of a satellite communication and BeiDou anti-interference fusion array antenna according to an embodiment of the present utility model is shown.

[0032] Figure 4 The composite radiation pattern (@2185MHz) of a 9-element Tiantong-S receiving antenna array according to an embodiment of the present invention is shown at an azimuth angle of 0° and an off-axis angle of 0°.

[0033] Figure 5 The composite radiation pattern (@2185MHz) of a 9-element Tiantong-S receiving antenna array according to an embodiment of the present invention is shown at an azimuth angle of 0° and an off-axis angle of 60°.

[0034] Figure 6 The composite radiation pattern (@2185MHz) of a 9-element Tiantong-S receiving antenna array according to an embodiment of the present invention is shown at an azimuth angle of 45° and an off-axis angle of 60°.

[0035] Figure 7 The composite radiation pattern (@2185MHz) of a 9-element Tiantong-S receiving antenna array according to an embodiment of the present invention is shown at an azimuth angle of 90° and an off-axis angle of 60°.

[0036] Figure 8 The composite radiation pattern of an 8-element TianTong S transmitting antenna array according to an embodiment of the present invention is shown at an azimuth angle of 0° and an off-axis angle of 0° (@1995MHz).

[0037] Figure 9 The composite radiation pattern (@1995MHz) of an 8-element Tiantong-S transmitting antenna array according to an embodiment of the present invention is shown at an azimuth angle of 0° and an off-axis angle of 60°.

[0038] Figure 10 The composite radiation pattern (@1995MHz) of an 8-element Tiantong-S transmitting antenna array according to an embodiment of the present invention is shown at an azimuth angle of 45° and an off-axis angle of 60°.

[0039] In the picture,

[0040] 1. First array element; 2. Second array element; 3. Central array element; 4. Isolation suppressor; 5. Antenna mounting array. Detailed Implementation

[0041] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0043] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0044] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0045] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0046] In this article, the term "connection" can be understood as A directly connecting to B, or A connecting to B through an intermediate component, which can be an electrical component, circuit, chip, or module, etc.

[0047] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this utility model.

[0048] To facilitate understanding of this utility model, the following explanations are provided for some of the antennas appearing in the embodiments:

[0049] Tiantong-S receiving unit antenna: Signal receiving antenna for Tiantong satellite system equipment;

[0050] Tiantong-S Transmitter Antenna: The signal transmitting antenna for the Tiantong satellite system equipment;

[0051] Beidou S-unit antenna: The signal receiving antenna of the Beidou satellite navigation system equipment, receiving signal frequency band of 2491.75±8.16MHz;

[0052] Beidou L-unit antenna: The signal transmitting antenna of the Beidou satellite navigation system equipment, with a transmission signal frequency band of 1615.68MHz±4.08MHz;

[0053] Beidou B2 unit antenna: The signal receiving antenna of the Beidou satellite navigation system equipment, receiving signal frequency band of 1207.14±10.23MHz;

[0054] Beidou B3 unit antenna: The signal receiving antenna for Beidou satellite navigation system equipment, receiving signal frequency band 1268.52±10.23MHz;

[0055] Beidou B1 unit antenna: The signal receiving antenna of the Beidou satellite navigation system equipment, with a receiving signal frequency band of 1575.42±16.368MHz.

[0056] This utility model embodiment provides a satellite communication and BeiDou anti-interference fusion array antenna. This array antenna integrates a satellite communication antenna and a BeiDou anti-interference antenna in a limited space. The mutual coupling between each antenna is small, and it can simultaneously possess the capability of antennas in different frequency bands. The antennas in each frequency band have high passive gain and very high combined gain.

[0057] In this embodiment of the invention, the satellite communication antenna is configured by default as a Tiantong satellite communication antenna. With the rapid development of my country's Tiantong satellite system, satellite mobile communication services have opened doors in both civilian and military applications. Currently, my country's Tiantong satellite system is still in its early stages of development, but its application potential is enormous. Compared to traditional terrestrial communication networks, Tiantong satellites possess advantages such as global coverage, strong disaster resistance, and no geographical limitations, and can be widely used in emergency rescue, marine communication, remote operations, and national defense security in the future. With technological advancements and the widespread adoption of terminal devices, the Tiantong satellite system is expected to further enhance communication capabilities and user experience, promoting the comprehensive development of my country's satellite communication industry.

[0058] It is worth noting that this embodiment does not limit the satellite communication antenna to only the Tiantong satellite communication antenna; it can also be other satellite communication antennas, such as narrowband satellite communication antennas.

[0059] like Figures 1-3 As shown, the array antenna of this utility model includes an antenna mounting disk 5, on which multiple antenna elements are arranged. Each antenna element includes at least one Tiantong unit antenna and at least one Beidou unit antenna, with the unit antennas in each antenna element stacked. Based on the above scheme, by stacking the Tiantong unit antenna and the Beidou unit antenna to form an antenna element, and setting multiple antenna elements on the antenna mounting disk 5, the layout of a multi-element Tiantong antenna array and a multi-element Beidou antenna array can be realized simultaneously in a limited space, allowing the Tiantong antenna and the Beidou antenna to be integrated into the same array antenna.

[0060] This invention does not limit the number of antenna elements. The minimum number of antenna elements can be two, and the number of antenna elements can also be three, four, or more. In some embodiments, the antenna elements should include a central element 3 and circumferential elements, with the circumferential elements distributed along the circumference of the central element 3, and the number of circumferential elements is even, that is, the number of antenna elements is 2n+1, where n≥1.

[0061] This invention does not limit the specific types of antennas included in the antenna array elements. Specifically, on the one hand, it does not limit the number of Tiantong-3 antenna units and Beidou-3 antenna units in the antenna array elements. In some cases, an antenna array element may contain only one Tiantong-3 antenna unit and one Beidou-3 antenna unit; in other cases, an antenna array element may contain multiple Tiantong-3 antenna units and one Beidou-3 antenna unit. For example, an antenna array element may have a Tiantong-3 receiving antenna unit, a Tiantong-3 transmitting antenna unit, and a Beidou-3 antenna unit; similarly, an antenna array element may also contain multiple Tiantong-3 antenna units and multiple Beidou-3 antenna units. On the other hand, it does not limit the frequency band of each antenna in the antenna array element. For example, an antenna array element may contain a Tiantong-3 receiving antenna unit, and another antenna array element may contain a Tiantong-3 transmitting antenna unit. It should be understood that by setting different antenna array elements, different antenna array distributions can be achieved, thereby achieving different functional applications.

[0062] In some embodiments, the antenna array element includes a central array element 3, which is installed at the center of the top of the antenna mounting array 5. The central array element 3 includes a BeiDou L-cell antenna, a TianTong S-cell receiving antenna, and a BeiDou S-cell antenna. Based on the above scheme, the central array element 3 includes a satellite communication antenna and a BeiDou navigation receiving and transmitting antenna, enabling the system containing the array antenna to support different functions, improving flexibility and applicability. Furthermore, by setting the above three different unit antennas in the central array element 3, the frequency bands / frequency points of the unit antennas are different, which significantly improves the spectrum utilization, anti-interference capability, and beam flexibility of the array antenna.

[0063] To enhance the application functionality of the array antenna, the aforementioned central array element 3 can also include BeiDou B2, BeiDou B3, and BeiDou B1 unit antennas. Based on this scheme, the central array element 3 is a six-band combined antenna, comprising six different unit antennas: BeiDou B2, BeiDou B3, BeiDou B1, BeiDou L, TianTong S receiving unit antenna, and BeiDou S unit antenna. The advantage of designing the central array element 3 as a multi-band combined antenna is that, due to the phased-array stability of the central array element 3, more antennas can be stacked in a limited space, reducing space and hardware costs and improving the utilization rate of frequency band resources. Furthermore, multi-band combined antennas help enhance beamforming flexibility, improve anti-interference and signal quality, and expand application scenarios. It should be understood that, in addition to the antenna types mentioned in the above embodiments, the central array element 3 can also include other different antenna types, which designers can flexibly adjust according to the actual application scenarios of the array antenna.

[0064] Furthermore, in some embodiments, the antenna array element further includes a first array element 1, which includes a Tiantong-S receiving unit antenna, a Tiantong-S transmitting unit antenna, and a Beidou-L unit antenna. The first array elements 1 are distributed circumferentially along the central array element 3, and the distance between each first array element 1 and the central array element 3 is equal. The number of first array elements 1 is multiple, preferably an even number. Multiple first array elements 1 can form a multi-element Tiantong-S transmitting antenna array, and multiple first array elements 1 and the aforementioned central array element 3 can form a multi-element Tiantong-S receiving antenna array and a multi-element Beidou-L antenna array. Therefore, based on the central array element 3 and multiple first array elements 1, antenna arrays with different functions can be integrated onto the same antenna mounting disk 5. The functional applications implemented based on the antenna array have stability, and multiple antenna arrays can improve the comprehensiveness of the array antenna application.

[0065] Furthermore, in some other embodiments, the antenna array element further includes a second array element 2. The second array element 2 includes a Tiantong-S receiving unit antenna, a Tiantong-S transmitting unit antenna, and a Beidou-S unit antenna. The second array elements 2 are distributed circumferentially along the central array element 3, and the distance between each second array element 2 and the central array element 3 is equal. The second array elements 2 and the first array elements 1 are distributed alternately. The number of second array elements 2 is also multiple, preferably an even number. Multiple second array elements 2 and the aforementioned central array element 3 can form a multi-element Beidou-S antenna array. The aforementioned central array element 3, together with multiple first array elements 1 and multiple second array elements 2, can form a multi-element Tiantong-S receiving antenna array. Multiple first array elements 1 and multiple second array elements 2 can form a multi-element Tiantong-S transmitting antenna array.

[0066] In the above embodiments, both the second array element 2 and the first array element 1 are circumferential array elements, and the second array element 2 is set correspondingly to the first array element 1. The two contain the same type of Tiantong antenna, which includes a Tiantong S receiving unit antenna and a Tiantong S transmitting unit antenna, and can realize beam scanning for Tiantong S frequency point transmission and reception. However, the two contain different types of Beidou antennas. The Beidou antenna in the first array element 1 is a Beidou L unit antenna, and the Beidou antenna in the second array element 2 is a Beidou S unit antenna. Therefore, the first array element 1 and the second array element 2 need to be distributed alternately to avoid mutual interference between the Beidou received signal and the transmitted signal.

[0067] The above embodiments describe antenna elements with different structures. By selecting antenna elements with different structures and distributing them on the antenna mounting disk 5 according to certain rules, different functional applications can be achieved. It should be understood that the type and number of unit antennas included in the antenna array, the positional distribution of the antenna elements on the antenna mounting disk 5, and the structure of the antenna mounting disk 5 all affect the actual performance of the array antenna. In order to obtain good performance, a preferred embodiment is given below. The array antenna scheme of this embodiment can achieve the operation of multiple systems while ensuring the performance stability of each system.

[0068] Specifically, the array antenna includes nine antenna elements: a central element 3, four first elements 1, and four second elements 2, arranged in a nine-square grid.

[0069] In this embodiment, the central array element 3 includes, from bottom to top, a first dual-frequency unit antenna, a second dual-frequency unit antenna, a Tiantong S receiving unit antenna, and a Beidou S unit antenna. The central array element 3 is equipped with four passive boards, which are used to arrange the four types of antennas mentioned above. The bottom passive board forms the first dual-frequency unit antenna, which is a four-feed antenna and includes the BeiDou B2 unit antenna and the BeiDou B3 unit antenna. That is, the bottom passive board is a B2 and B3 dual-frequency antenna. The second passive board forms the second dual-frequency unit antenna, which is a four-feed antenna and includes the BeiDou B1 unit antenna and the BeiDou L unit antenna. That is, the second passive board is a B1 and L dual-frequency antenna. The third passive board is the TianTong S receiving unit antenna, which adopts a dual-feed design. That is, the TianTong S receiving unit antenna is a dual-feed antenna. The fourth passive board is the BeiDou S unit antenna, which adopts a single-feed design.

[0070] In this embodiment, the first array element 1, from bottom to top, includes a third dual-frequency antenna and a BeiDou L-cell antenna, and the second array element 2, from bottom to top, includes a third dual-frequency antenna and a BeiDou S-cell antenna. The third dual-frequency antenna is a TianTong S-layered antenna, which is composed of a TianTong S-transmitting antenna and a TianTong S-receiving antenna stacked vertically. The TianTong S-layered antenna features a dual-fed design. Based on the above structure, the central array element 3 can be used as a high-precision positioning and directional antenna in a non-interference environment, with a phase center deviation radius ≤ 2.5mm.

[0071] Since both the first array element 1 and the second array element 2 contain Tiantong-S stacked antennas, that is, a total of 8 Tiantong-S stacked antennas are distributed around the central array element 3, and the central array element 3 includes a Tiantong-S receiving unit antenna, the first array element 1, the second array element 2 and the central array element 3 can form a 9-element Tiantong-S receiving antenna array and an 8-element Tiantong-S transmitting antenna array. Based on the above two arrays, the array antennas can achieve beam scanning with an off-axis angle of 60° in the Tiantong satellite communication function. Figures 4-7 The composite radiation patterns of a 9-element Tiantong-S receiving antenna array at different azimuth and off-axis angles are shown. Figures 8-10 The composite radiation patterns of the 8-element Tiantong L transmitting antenna array at different azimuth angles and different off-axis angles are shown.

[0072] In this embodiment, there are four first array elements 1 and four second array elements 2. The adjacent first array elements 1 and the central array element 3 form a right angle, and the adjacent second array elements 2 and the central array element 3 form a right angle. The first array elements 1 and the second array elements 2 are distributed alternately.

[0073] In this embodiment, both the first array element 1 and the central array element 3 contain BeiDou L unit antennas. The first array element 1 and the central array element 3 can form a 5-element BeiDou L antenna array, namely the BeiDou transmitting array. Based on the BeiDou transmitting array, beamforming is possible, ensuring that the effective isotropic radiated power (EIRP) of the BeiDou L antenna transmission is higher than the entry standard.

[0074] In this embodiment, four isolation suppressors 4 are also provided on the antenna mounting array 5. Each isolation suppressor 4 corresponds one-to-one with a first array element 1, and is located between the first array element 1 and the central array element 3. In one specific embodiment, the isolation suppressor 4 includes two isolation suppressor plates connected at both ends, the two isolation suppressor plates being perpendicular to each other. The length of each isolation suppressor plate is greater than the length of the first array element 1, and the height of each isolation suppressor plate is greater than the height of the first array element 1. It should be understood that the isolation suppressor 4 can also be configured as an isolation suppressor 4 with other structures.

[0075] In this embodiment, both the second array element 2 and the central array element 3 include BeiDou S-cell antennas. The second array element 2 and the central array element 3 can form a 5-element BeiDou S-cell antenna array, i.e., a BeiDou receiving array. The 5 BeiDou S-cell antennas can synthesize a radiation pattern with 4 null points. Each null point is aligned with the direction of interference, so that each frequency band can withstand interference signals from 4 different directions, thereby allowing the device to maintain the BeiDou satellite short message function in an interference environment.

[0076] In this embodiment, the antenna mounting array 5 is a circular array. The side of the antenna mounting array 5 has a bevel near the second array element 2, and the thickness of the bevel decreases as the distance from the second array element 2 increases. The second array element 2 houses a BeiDou S-cell antenna. By setting the bevel, the stability of the BeiDou S-cell antenna's received signal can be ensured, improving its anti-interference performance.

[0077] In this embodiment, the antennas used in the array antenna are all manufactured using mature PCB electroplating or copper foil processes, resulting in low production costs, which is conducive to the large-scale application of the product and has good economic benefits.

[0078] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A satellite communication and Beidou anti-interference fusion array antenna, characterized in that, It includes an antenna mounting array, on which multiple antenna elements are provided. Each antenna element includes at least one Tiantong unit antenna and at least one Beidou unit antenna, and the unit antennas in each antenna element are stacked.

2. The satellite communication and BeiDou anti-interference fusion array antenna according to claim 1, characterized in that, The antenna array element includes a central array element, which is installed at the center of the top of the antenna mounting array disk. The central array element includes a BeiDou L-cell antenna, a TianTong S-cell receiving antenna, and a BeiDou S-cell antenna.

3. The satellite communication and BeiDou anti-interference fusion array antenna according to claim 2, characterized in that, The antenna array element further includes a first array element, which includes a Tiantong-S receiving unit antenna, a Tiantong-S transmitting unit antenna, and a Beidou-L unit antenna. The first array element is distributed circumferentially along the central array element, and the distance between each first array element and the central array element is equal.

4. The satellite communication and BeiDou anti-interference fusion array antenna according to claim 3, characterized in that, The antenna array element further includes a second array element, which includes a Tiantong-S receiving unit antenna, a Tiantong-S transmitting unit antenna, and a Beidou-S unit antenna. The second array element is distributed circumferentially along the central array element, and the distance between each second array element and the central array element is equal. The second array element and the first array element are distributed alternately.

5. The satellite communication and BeiDou anti-interference fusion array antenna according to claim 4, characterized in that, The number of the first array elements is four, and the angle between adjacent first array elements and the central array element is a right angle; and / or, the number of the second array elements is four, and the angle between adjacent second array elements and the central array element is a right angle.

6. The satellite communication and Beidou anti-jamming fusion array antenna according to claim 5, characterized in that, The central array element also includes the BeiDou B2 unit antenna, the BeiDou B3 unit antenna, and the BeiDou B1 unit antenna.

7. The satellite communication and BeiDou anti-interference fusion array antenna according to claim 6, characterized in that, The central array element, from bottom to top, includes a first dual-frequency unit antenna, a second dual-frequency unit antenna, a Tiantong-S receiving unit antenna, and a Beidou-S unit antenna; wherein, the first dual-frequency unit antenna is a four-feed antenna, which includes a Beidou B2 unit antenna and a Beidou B3 unit antenna; the second dual-frequency unit antenna is a four-feed antenna, which includes a Beidou B1 unit antenna and a Beidou L unit antenna; the Tiantong-S receiving unit antenna is a dual-feed antenna; and the Beidou-S unit antenna is a single-feed antenna.

8. The satellite communication and Beidou anti-jamming fusion array antenna according to claim 7, characterized in that, The side of the antenna mounting array has a bevel near the second array element, and the thickness of the bevel decreases as the distance from the second array element increases.

9. The satellite communication and Beidou anti-jamming fusion array antenna according to claim 7, characterized in that, The antenna mounting array is also equipped with an isolation suppressor, which is located between the first array element and the center array element.

10. The satellite communication and Beidou anti-jamming fusion array antenna of claim 9, characterized in that, The isolation suppressor includes two isolation suppressor plates connected at both ends, the two isolation suppressor plates are perpendicular to each other, the length of each isolation suppressor plate is greater than the length of the first array element, and the height of each isolation suppressor plate is greater than the height of the first array element.

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