Multifunctional integrated anti-interference receiving antenna

Abstract

The invention provides a multifunctional integrated anti-interference receiving antenna, which comprises a structural bottom plate, a dual-polarized B3 antenna unit connected to the upper part of the structural bottom plate, an S antenna unit, an L antenna unit, a B2 antenna unit, a feed network and an S feed cable for connecting the S antenna unit and the feed network, wherein the S antenna unit, the L antenna unit, the B2 antenna unit and the feed network are sequentially connected from top to bottom; the L antenna unit and the feed network are connected through the L feed cable, and the dual-polarization B3 antenna unit and the dual-polarization B3 antenna unit are respectively connected with the feed network through the B2 / B3 feed cable. According to the invention, a polarization fusion mode is adopted, in a limited size, the antenna has the capability of inhibiting more interference signals, and meanwhile, the function of receiving and transmitting RDSS short messages can be realized; a Beidou global short message transmitting network is formed by using the branch line bridge and the power resistor, so that the power endurance capability of a long-endurance platform in a high-temperature environment is improved, and the reliability of the system is improved; by adopting the dual-circular polarization unit and the central three-layer printed board, the Beidou B3 frequency 7 interference suppression and global short message receiving and transmitting functions are realized, and the application is portable.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and in particular to a multifunctional integrated anti-interference receiving antenna. Background Art

[0002] With the continuous development of my country's Beidou satellite navigation and positioning system, various applications based on the Beidou system have spread across various fields such as economic construction and scientific research, and with the continuous improvement of the Beidou system, various applications are also increasing. As the front-end hardware device of the entire receiving system, the performance of the satellite navigation antenna is directly related to the accuracy and sensitivity of the entire system.

[0003] As an important development direction of navigation antennas, anti-interference antennas are widely used in satellite navigation signal anti-interference systems, including single-antenna time-domain filtering technology, multi-antenna spatial nulling technology, and multi-antenna space-time processing technology.

[0004] The advantage of single-antenna time-domain filtering anti-interference technology is that it only has a single antenna, is small in size, and is easy to install on various carriers; the disadvantage is that it can only resist narrowband interference but not broadband interference.

[0005] The advantages of multi-antenna spatial nulling technology and multi-antenna space-time processing technology are that they can resist narrowband and broadband interference at the same time. However, the disadvantage is that since nulling is formed in the interference direction, when the interference and the satellite signal are in the same direction or the angle is very small, the satellite signal will also be suppressed; and since the anti-interference ability of the array is limited by the number of array elements, in order to increase the number of anti-interference elements, the number of array elements needs to be increased. Under the condition that multiple antenna array elements exist at the same time, the array is not convenient to be installed on a carrier with limited space, and its application is subject to certain restrictions.

[0006] In recent years, the application of electromagnetic wave polarization information has made rapid progress. The use of polarization technology has become an effective means of radar anti-interference. In the field of navigation signal processing, anti-interference processing can also be performed using the polarization information of interference.

[0007] Therefore, an antenna is needed that uses polarization information of interference to perform anti-interference processing. Summary of the invention

[0008] The present invention aims to solve the problem that it is not suitable to increase the number of array elements of a navigation anti-interference antenna when the platform size is limited, thereby limiting the number of interference suppression and the like. The present invention provides a multifunctional integrated anti-interference receiving antenna, which adopts a polarization fusion method and has the ability to suppress more interference signals within a limited size, and can realize the RDSS short message receiving and sending function at the same time; a Beidou global short message transmission network is formed by using branch line bridges and power resistors, which improves the power tolerance of long-flight platforms under high temperature environments and enhances the reliability of the system; a dual circular polarization unit and a central three-layer printed circuit board are adopted to realize Beidou B3 frequency 7 interference suppression and global short message receiving and sending functions, and the application is portable.

[0009] The present invention provides a multifunctional integrated anti-interference receiving antenna, comprising a structural bottom plate, a dual-polarization B3 antenna unit connected to the upper portion of the structural bottom plate, an S antenna unit, an L antenna unit, a B2 antenna unit, and a feeding network connected in sequence from top to bottom, an S feeding cable connecting the S antenna unit and the feeding network, an L feeding cable connecting the L antenna unit and the feeding network, and a B2 / B3 feeding cable connecting the dual-polarization B3 antenna unit and the B2 antenna unit to the feeding network respectively; The number of dual-polarization B3 antenna units is 4, evenly distributed at the four corners of the structural base plate. The S antenna unit, L antenna unit and B2 antenna unit are fixed to the structural base plate by screws, and the feeding network is connected to the structural base plate. The S antenna unit and the B2 antenna unit are connected to the back-end receiver respectively, and the L antenna unit is connected to the transmitter; the dual-polarization B3 antenna unit is connected to the eight-channel anti-interference module and the B3 receiver in turn; One antenna element of the dual-polarized B3 antenna unit is used as the main element, and the other three antenna elements are used as auxiliary elements. One polarization signal of the main element is used as the main element signal, and the other polarization signal of the main element and the seven polarization signals of the auxiliary elements are used as cancellation signals for interference cancellation. When the output error power is When it is minimum, the anti-interference cancellation of the main array element is completed.

[0010] The most preferred embodiment of the multifunctional integrated anti-interference receiving antenna described in the present invention is that each antenna array element of the dual-polarized B3 antenna unit receives the spatial radiation signal and then outputs mutually orthogonal B3 left-handed signal and B3 right-handed signal.

[0011] The multifunctional integrated anti-interference receiving antenna of the present invention is preferably configured such that an eight-channel anti-interference module outputs the power of the error. The minimized anti-interference processing obtains an anti-interference B3 receiving signal, and the anti-interference B3 receiving signal is output to the B3 receiver; The eight-channel anti-interference module includes eight RF channels connected to the output end of the dual-polarization B3 antenna unit and an anti-interference processor connected to all RF channels. The anti-interference processor digitally processes the output signal of the RF channel connected to the signal output end of the main array element and the output signal of the remaining 7 RF channels, performs amplitude-phase weighting on the digital processing, and adaptively adjusts the weight until the power of the output error is Minimum; Output error power for: ; in, is the right-handed electric field component of the main array element, is the left-handed electric field component of the main array element, is the right-handed electric field component of auxiliary element 1, is the left-handed electric field component of auxiliary element 1, is the right-handed electric field component of auxiliary element 2, is the left-handed electric field component of auxiliary element 2, is the right-handed electric field component of auxiliary element 3, is the left-handed electric field component of auxiliary element 3, and k1~k7 are component weights.

[0012] The multifunctional integrated anti-interference receiving antenna described in the present invention is preferably: ; ; ; ; ; ; ; ; in, is the angular velocity in degrees / second, t is the time in seconds, is the electric field amplitude of the array element, is the electric field amplitude of auxiliary array element 1, △t1 is the time delay of auxiliary array element 1, is the electric field amplitude of auxiliary array element 2, △t2 is the time delay of auxiliary array element 2, is the electric field amplitude of auxiliary array element 3, and △t3 is the time delay of auxiliary array element 3.

[0013] The most preferred embodiment of the multifunctional integrated anti-interference receiving antenna described in the present invention is that the S antenna unit outputs an S right-hand circularly polarized signal after receiving the space radiation signal, the L antenna unit converts the received signal into an L left-hand circularly polarized signal and radiates it into space, and the B2 antenna unit outputs a B2 right-hand circularly polarized signal after receiving the space radiation signal.

[0014] The multifunctional integrated anti-interference receiving antenna described in the present invention is preferably configured such that the feeding network includes four polarization bridges for realizing left-hand circular polarization and right-hand circular polarization respectively; There are 10 B2 / B3 feeding cables, of which 8 have one end passing through the feeding network and are respectively welded to the pads of the polarization bridge, and the other end is respectively welded to the dual-polarization B3 antenna unit. Another two B2 / B3 feeding cables have one end passing through the feeding network and are welded to the pads of the B2 right-hand circularly polarized bridge, and the other end is welded to the B2 antenna unit.

[0015] The multifunctional integrated anti-interference receiving antenna described in the present invention is preferably configured such that the feeding network further comprises an L left-hand circularly polarized bridge connected to the L antenna unit and a B2 right-hand circularly polarized bridge connected to the B2 antenna unit, and the matching end of the L left-hand circularly polarized bridge is a power resistor; The B2 antenna unit is provided with a first L feed line through hole, a first S feed line through hole and a B2 feed line through hole; the number of the first L feed line through hole is 2, and the first L feed line through hole and the first S feed line through hole are metallized holes; the number of the B2 feed line through holes is 2, and the B2 feed line through hole is a non-metallized hole.

[0016] The multifunctional integrated anti-interference receiving antenna of the present invention is preferably configured such that a second L feeder through hole and a second S feeder through hole are provided on the L antenna unit, the number of the second L feeder through holes is 2, the second L feeder through hole is a non-metallized hole, and the second S feeder through hole is a metallized hole; One end of the L feed cable passes through the feed network and is welded to the pad of the L left-hand circular polarization bridge, and the other end passes through the second L feed line through hole and the first L feed line through hole in sequence and is connected to the L antenna unit.

[0017] The multifunctional integrated anti-interference receiving antenna of the present invention is preferably configured such that a third S feeder through hole is provided on the S antenna unit, and the third S feeder through hole is a non-metallized hole; One end of the S feed cable passes through the feed network and is welded to the S printed wire pad, and the other end passes through the first S feed line through hole, the second S feed line through hole and the third S feed line through hole in sequence and is welded to the S antenna unit.

[0018] The multifunctional integrated anti-interference receiving antenna of the present invention is preferably configured such that two L antenna unit countersunk holes with a diameter of 4 mm and a depth of 1.5 mm are provided on the back of the L antenna unit, and the L antenna unit countersunk holes are metallized holes; Two S antenna unit countersunk holes with a diameter of 4 mm and a depth of 1.5 mm are opened on the back of the S antenna unit. The S antenna unit countersunk holes are metalized holes.

[0019] The present invention has the following advantages: (1) The present invention relates to a multifunctional integrated polarization anti-interference antenna. The antenna adopts polarization fusion and has the ability to suppress more interference signals within a limited size. At the same time, it can realize the RDSS short message receiving and sending function. Although the results published in the literature and patents currently involve cases of antenna polarization multiplexing, they do not have navigation anti-interference capabilities, and the use of dual-line polarization for signal reception will cause attenuation of useful signals. In addition, the results published in the literature have a single function and do not have the Beidou regional short message and global short message receiving and sending functions.

[0020] (2) The present invention utilizes branch line bridges and power resistors to form a BeiDou global short message transmission network, thereby improving the power tolerance of long-flight platforms in high-temperature environments and enhancing the reliability of the system.

[0021] (3) The present invention adopts a dual circular polarization unit and a central three-layer printed circuit board to achieve Beidou B3 frequency 7 interference suppression and global short message receiving and sending functions. It has a simple structure, is easy to use, and greatly reduces the processing cost.

[0022] (4) Each antenna array element of the present invention outputs orthogonal polarization information (right-hand circular polarization and left-hand circular polarization), and uses one right-hand circular polarization signal as a reference signal, that is, the main array element signal; the other left-hand circular polarization signal is used as a cancellation signal, that is, the auxiliary array element signal, and is sent to the anti-interference processor, and then the space-time algorithm is used to finally achieve the purpose of canceling interference. By using the polarization information of the antenna, the number of anti-interference can be increased from the traditional "N-1" to "2N-1". The problem of multi-interference suppression when the size is small and the number of antenna elements is limited is solved. In practical applications, the amplitude phase of the selected unit is controlled to achieve the control of the zero depth of the antenna pattern, thereby achieving the effect of suppressing interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a multifunctional integrated anti-interference receiving antenna; Figure 2 It is a cross-sectional view of a multifunctional integrated anti-interference receiving antenna; Figure 3 It is a structural schematic diagram of a feeding network of a multifunctional integrated anti-interference receiving antenna; Figure 4 It is a structural schematic diagram of a multifunctional integrated anti-interference receiving antenna B2 antenna unit; Figure 5 It is a front structural schematic diagram of an L antenna unit of a multifunctional integrated anti-interference receiving antenna; Figure 6 It is a schematic diagram of the reverse structure of an L antenna unit of a multifunctional integrated anti-interference receiving antenna; Figure 7 It is a front structural schematic diagram of an S antenna unit of a multifunctional integrated anti-interference receiving antenna; Figure 8 It is a schematic diagram of the reverse structure of an S antenna unit of a multifunctional integrated anti-interference receiving antenna; Fig. 9 It is a schematic diagram of the structure of an anti-interference processing module of a multifunctional integrated anti-interference receiving antenna; Fig.10 A multifunctional integrated anti-interference receiving antenna to suppress interference effects Figure 1 ; Fig.11 A multifunctional integrated anti-interference receiving antenna to suppress interference effects Figure 2 ; Fig.12 A multifunctional integrated anti-interference receiving antenna to suppress interference effects Figure 3 .

[0024] Reference numerals: 1. Structural base plate; 2. Dual-polarized B3 antenna unit; 3. S antenna unit; 4. L antenna unit; 5. B2 antenna unit; 6. Feed network; 7. S feed cable; 8. L feed cable; 9. B2 / B3 feed cable; 10. Polarization bridge; 11. Power resistor; 12. First L feed line through hole; 13. First S feed line through hole; 14. B2 feed line through hole; 15. Second L feed line through hole; 16. Second S feed line through hole; 17. L antenna unit countersunk hole; 18. Third S feed line through hole; 19. S antenna unit countersunk hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0026] like Figures 1 to 9As shown, a multifunctional integrated anti-interference receiving antenna includes: a structural base plate 1, a dual-polarization B3 antenna unit 2, an S antenna unit 3, an L antenna unit 4, a B2 antenna unit 5, a feeding network 6, an S feeding cable 7, an L feeding cable 8, a B2 / B3 feeding cable 9, and a polarization bridge 10 connected to the feeding network 6, and a power resistor 11; The four dual-polarized B3 antenna units 2 are located above the feed network 6 and are mounted on the structural base plate 1 by four screws, and are respectively welded to the antenna units and the feed network 6 by feed cables; the S antenna unit 3, the L antenna unit 4, and the B2 antenna unit 5 are sequentially stacked and installed above the feed network 6, and are fixed to the structural base plate 1 by four screws, and are respectively welded to the antenna units and the feed network by feed cables.

[0027] The S antenna unit 3 and the B2 antenna unit 5 are connected to the back-end receiver respectively, and the L antenna unit 4 is connected to the transmitter. The four dual-polarized B3 antenna units 2 are connected to the eight-channel anti-interference module and enter the B3 receiver after anti-interference processing.

[0028] One end of the S feeding cable 7 passes through the feeding network 6 and is welded to the S printed wire pad, and the other end is welded to the S antenna unit 3 .

[0029] One end of the two L-feeding cables 8 passes through the feeding network 6 and is respectively welded to the two pads of the branch line bridge, and the other end is welded to the L antenna unit 4 .

[0030] One ends of the ten B2 / B3 feeding cables 9 pass through the feeding network 6 and are respectively welded to the pads of the bridge, and the other ends are respectively welded to the dual-polarization B3 antenna unit 2 and the B2 antenna unit 5 .

[0031] Four dual-polarization B3 antenna units 2 are evenly distributed around the antenna array. Each antenna unit has two feeding points in the horizontal direction and the vertical direction, and realizes left-hand circular polarization and right-hand circular polarization respectively through the polarization bridge 10.

[0032] One of the right-hand circular polarization signals is used as the reference signal, i.e. the main array element signal, the other left-hand circular polarization signal, and the remaining three groups of six left-hand circular polarization signals are used as auxiliary array element signals for cancellation signals. The weights are adjusted adaptively and then output after cancellation. By adaptively adjusting the weights, the power of the output error is minimized, and the purpose of canceling interference is finally achieved.

[0033] The feeding network 6 includes four polarization bridges 10, which realize left-hand circular polarization and right-hand circular polarization respectively. Four left-hand signals B3-1-L~B3-4-L and four right-hand signals B3-1-R~B3-4-R are output externally. The feeding network 6 also includes two branch line bridges (i.e., L left-hand circular polarization bridge and B2 right-hand circular polarization bridge), which realize L left-hand circular polarization and B2 right-hand circular polarization respectively, and the matching end of L left-hand circular polarization bridge is power resistor 11.

[0034] The radiation pattern of any of the four dual-polarized B3 antenna units 2 in this antenna can be controlled by the four parameters of the amplitude and phase of the two ports. When the amplitude of one port is 0, it is circular polarization; when the amplitudes of the two ports are the same, linear polarization can be formed. Other cases are elliptical polarization.

[0035] In practical applications, the amplitude and phase of the selected unit are controlled to achieve the control of the zero depth of the antenna pattern, thereby achieving the effect of suppressing interference.

[0036] For any antenna unit, two mutually orthogonal linear polarizations, vertical and horizontal, or two mutually orthogonal circular polarizations, left and right, can fully represent any polarization characteristics in space. The four array elements have eight non-correlated components to control the composite pattern.

[0037] From the perspective of anti-interference, one channel is needed to receive signals and the other channel is used to cancel interference. If two orthogonal linear polarizations are used, 3dB will be lost at the beginning. Therefore, the present invention uses mutually orthogonal circular polarization left and right to control the composite directional pattern.

[0038] According to the anti-interference application scenario, the opponent's interference may be right-hand circular polarization, left-hand circular polarization, linear polarization, etc. at low elevation angles or negative elevation angles. Moreover, after the electromagnetic wave is irradiated on the carrier, it will reach the antenna aperture by diffraction, creeping, etc., so the polarization information reaching the antenna aperture is also arbitrary.

[0039] The right-hand circular polarization of B3-1-R is used as the reference signal, i.e. the main array element signal, the left-hand circular polarization signal of B3-1-L, and the remaining three groups of six left-hand circular polarization signals are used as auxiliary array element signals for cancellation signals, and the weights are adjusted adaptively and then output after cancellation. By adaptively adjusting the weights, the power of the output error is minimized, and the purpose of canceling interference is finally achieved.

[0040] Due to the introduction of polarization information, the degrees of freedom of the four-element antenna 2 are increased from 4 to 8, and the number of anti-interference elements is increased from the traditional "N-1" to "2N-1", which solves the problem of multi-interference suppression when the size is small and the number of antenna elements is limited.

[0041] like Figure 4As shown, two first L feeder through holes 12 and one first S feeder through hole 13 are provided on the B2 antenna unit 5, and all three holes are metallized holes. Two B2 feeder through holes 14 are also provided on the B2 antenna unit 5, and the holes are non-metallized holes.

[0042] like Figure 5 , 6 As shown, two second L feeder through holes 15 and one second S feeder through hole 16 are provided on the L antenna unit 4, wherein the second L feeder through hole 15 is a non-metallized hole and the second S feeder through hole 16 is a metallized hole. At the same time, there are two L antenna unit countersunk holes 17 with a diameter of 4 mm and a depth of 1.5 mm on the back of the L antenna unit 4.

[0043] like Figure 7 , 8 As shown, a third S feed line through hole 18 is provided on the S antenna unit 3, and the hole is a non-metallized hole; meanwhile, two S antenna unit countersunk holes 19 with a diameter of 4 mm and a depth of 1.5 mm are provided on the back of the S antenna unit 3.

[0044] At any point in space, the electric field of the four array elements can be expressed as: The right-handed electric field component of the main array element: ; The left-handed electric field component of the main array element: ; Right-handed electric field component of auxiliary array element 1: ; Left-handed electric field component of auxiliary array element 1: ; Right-handed electric field component of auxiliary array element 2: ; The left-handed electric field component of auxiliary array element 2: ; Right-handed electric field component of auxiliary array element 3: ; Left-handed electric field component of auxiliary array element 3: ; in, is the electric field amplitude of the main array element, is the angular velocity in degrees / second, t is the time in seconds, is the electric field amplitude of auxiliary array element 1, △t1 is the time delay of auxiliary array element 1, is the electric field amplitude of auxiliary array element 2, △t2 is the time delay of auxiliary array element 2, is the electric field amplitude of auxiliary array element 3, and △t3 is the time delay of auxiliary array element 3.

[0045] like Fig. 9 As shown, the eight-channel anti-interference module adjusts the weights of each component k1~k7 adaptively to reduce the power of the output error The electric field component of the polarization direction of the minimum interference signal is the smallest, and the purpose of canceling interference is finally achieved. The adaptive adjustment method includes but is not limited to the least square method.

[0046] .

[0047] pass Figures 10-12 It can be seen that this embodiment realizes the control of the zero depth of the antenna pattern, thereby achieving the effect of suppressing interference.

[0048] The present invention adopts four antenna array elements to suppress seven interference signals, and at the same time has the functions of sending and receiving Beidou regional short messages and global short messages.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional integrated anti-interference receiving antenna, characterized in that: The invention comprises a structural base plate (1), a dual-polarized B3 antenna unit (2) connected to the upper part of the structural base plate (1), an S antenna unit (3), an L antenna unit (4), a B2 antenna unit (5), and a feeding network (6) connected in sequence from top to bottom, an S feeding cable (7) connecting the S antenna unit (3) and the feeding network (6), an L feeding cable (8) connecting the L antenna unit (4) and the feeding network (6), and a B2 / B3 feeding cable (9) connecting the dual-polarized B3 antenna unit (2) and the B2 antenna unit (5) to the feeding network (6) respectively; The number of the dual-polarization B3 antenna units (2) is four and is evenly distributed at the four corners of the structural base plate (1); the S antenna unit (3), the L antenna unit (4) and the B2 antenna unit (5) are fixed to the structural base plate (1) by screws; and the feeding network (6) is connected to the structural base plate (1); The S antenna unit (3) and the B2 antenna unit (5) are respectively connected to a back-end receiver, and the L antenna unit (4) is connected to a transmitter; the dual-polarization B3 antenna unit (2) is sequentially connected to an eight-channel anti-interference module and a B3 receiver; One antenna element of the dual-polarized B3 antenna unit (2) is used as the main element, and the other three antenna elements are used as auxiliary elements. One polarization signal of the main element is used as the main element signal, and the other polarization signal of the main element and the seven polarization signals of the auxiliary elements are used as cancellation signals to cancel interference. When the power of the output error is When , is minimum, the anti-interference cancellation of the main array element is completed.

2. The multifunctional integrated anti-interference receiving antenna according to claim 1, characterized in that: Each antenna array element of the dual-polarized B3 antenna unit (2) receives a spatial radiation signal and then outputs a mutually orthogonal B3 left-handed signal and a B3 right-handed signal.

3. The multifunctional integrated anti-interference receiving antenna according to claim 2, characterized in that: The eight-channel anti-interference module performs the power of the output error Minimized anti-interference processing obtains an anti-interference B3 receiving signal, and the anti-interference B3 receiving signal is output to the B3 receiver; The eight-channel anti-interference module comprises eight radio frequency channels respectively connected to the output end of the dual-polarized B3 antenna unit (2) and an anti-interference processor connected to the radio frequency channels. The anti-interference processor digitally processes the output signal of the radio frequency channel connected to the signal output end of the main array element and performs amplitude-phase weighting on the output signals of the remaining seven radio frequency channels, and adaptively adjusts the weights until the power of the output error is Minimum; The output error power for: ； in, is the right-handed electric field component of the main array element, is the left-handed electric field component of the main array element, is the right-handed electric field component of auxiliary element 1, is the left-handed electric field component of auxiliary element 1, is the right-handed electric field component of auxiliary element 2, is the left-handed electric field component of auxiliary element 2, is the right-handed electric field component of auxiliary element 3, is the left-handed electric field component of auxiliary element 3, and k1~k7 are component weights.

4. The multifunctional integrated anti-interference receiving antenna according to claim 3, characterized in that: ； ； ； ； ； ； ； ； in, is the angular velocity in degrees / second, t is the time in seconds, is the electric field amplitude of the array element, is the electric field amplitude of auxiliary array element 1, △t1 is the time delay of auxiliary array element 1, is the electric field amplitude of auxiliary array element 2, △t2 is the time delay of auxiliary array element 2, is the electric field amplitude of auxiliary array element 3, and △t3 is the time delay of auxiliary array element 3.

5. A multifunctional integrated anti-interference receiving antenna according to any one of claims 1 to 4, characterized in that: The S antenna unit (3) outputs an S right-hand circularly polarized signal after receiving a spatially radiated signal, the L antenna unit (4) converts the received signal into an L left-hand circularly polarized signal and radiates it into space, and the B2 antenna unit (5) outputs a B2 right-hand circularly polarized signal after receiving a spatially radiated signal.

6. The multifunctional integrated anti-interference receiving antenna according to claim 5, characterized in that: The feeding network (6) comprises four polarization bridges (10) for respectively realizing left-hand circular polarization and right-hand circular polarization; The number of the B2 / B3 feeder cables (9) is 10, of which 8 of the B2 / B3 feeder cables (9) have one end passing through the feeder network (6) and are respectively welded to the welding pads of the polarization bridge (10), and the other end is respectively welded to the dual-polarization B3 antenna unit (2).

7. The multifunctional integrated anti-interference receiving antenna according to claim 6, characterized in that: The feeding network (6) further comprises an L left-hand circularly polarized bridge connected to the L antenna unit (4) and a B2 right-hand circularly polarized bridge connected to the B2 antenna unit (5), wherein the matching end of the L left-hand circularly polarized bridge is a power resistor (11); One end of the other two B2 / B3 feed cables (9) passes through the feed network (6) and is welded to the pad of the B2 right-hand circularly polarized bridge, and the other end is welded to the B2 antenna unit (5); The B2 antenna unit (5) is provided with a first L feed line through hole (12), a first S feed line through hole (13) and a B2 feed line through hole (14); the number of the first L feed line through holes (12) is 2, and the first L feed line through holes (12) and the first S feed line through holes (13) are both metallized holes; the number of the B2 feed line through holes (14) is 2, and the B2 feed line through holes (14) are non-metallized holes.

8. The multifunctional integrated polarization anti-interference antenna according to claim 7, characterized in that: The L antenna unit (4) is provided with a second L feed line through hole (15) and a second S feed line through hole (16), the number of the second L feed line through holes (15) is 2, the second L feed line through holes (15) are non-metallized holes, and the second S feed line through holes (16) are metallized holes; One end of the L feed cable (8) passes through the feed network (6) and is welded to the pad of the L left-hand circularly polarized bridge, and the other end passes through the second L feed line through hole (15) and the first L feed line through hole (12) in sequence to be connected to the L antenna unit (4).

9. The multifunctional integrated polarization anti-interference antenna according to claim 8, characterized in that: A third S feeder line through hole (18) is provided on the S antenna unit (3), and the third S feeder line through hole (18) is a non-metallized hole; One end of the S feed cable (7) passes through the feed network (6) and is welded to the S printed wire pad, and the other end passes through the first S feed line through hole (13), the second S feed line through hole (16) and the third S feed line through hole (18) in sequence and is welded to the S antenna unit (3).

10. The multifunctional integrated polarization anti-interference antenna according to claim 1, characterized in that: The back side of the L antenna unit (4) is provided with two L antenna unit countersunk holes (17) with a diameter of 4 mm and a depth of 1.5 mm, and the L antenna unit countersunk holes (17) are metallized holes; The back side of the S antenna unit (3) is provided with two S antenna unit countersunk holes (19) with a diameter of 4 mm and a depth of 1.5 mm, and the S antenna unit countersunk holes (19) are metallized holes.

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