Airborne multi-frequency anti-interference satellite navigation array forwarding antenna

Abstract

The utility model discloses an airborne multi-frequency anti-interference satellite navigation array forwarding antenna, which belongs to the technical field of communication, and is characterized in that a plurality of radio frequency channels are arranged in an antenna shell for a plurality of antenna array elements, and an anti-interference signal channel and an original signal channel are arranged in the plurality of radio frequency channels; the antenna can output anti-interference radio frequency signals and can also output original radio frequency signals. And meanwhile, the temperature control unit is arranged in the antenna shell, so that the temperature of the inner cavity of the antenna shell can be heated by the temperature control unit when the temperature is lower than a preset value, and the antenna can be ensured to work normally in an extremely low-temperature environment. The forwarding antenna provided by the utility model is compact in structure and convenient to set, can effectively meet the use requirements of the antenna in an extremely low temperature environment, and can realize the output requirements of anti-interference radio frequency signals and original signals, so that the forwarding antenna can be matched with a cheap satellite navigation receiver at an airborne end for use; the use performance of the antenna is improved and the application cost of the antenna is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to communication technical field, concretely relates to an airborne multi-frequency anti-jamming satellite navigation array repeater antenna. BACKGROUND

[0002] The airborne antenna is a device carried on the outer surface of the aircraft for receiving satellite signals, and undertakes the heavy responsibility of transmitting and receiving communication signals during the operation of the aircraft. For the airborne antenna, it often encounters extreme harsh environments in practical application, such as aircraft flying at 10,000 meters altitude, encountering cold air or strong convective weather, etc. At this time, the working environment temperature of the antenna is extremely low, even as low as minus 70℃ or below, which usually greatly exceeds the application temperature limit of the antenna design, resulting in that the antenna cannot be normally used, affecting the normal control or data interaction of the aircraft.

[0003] In order to better cope with extreme harsh environments, the usual way is to set higher level components on the aircraft. Although this way can cope with extreme environments to some extent, it also has the disadvantages of high application cost and maintenance cost, limited application range (usually only meets the extreme application demand of minus 55℃ or so), which is difficult to meet the demand of practical application. In addition, when the aircraft performs tasks at high altitude, it is easy to be suppressed by interference, which seriously affects the positioning and speed measurement performance of the satellite navigation device. Moreover, if there is a high-power device on the ground, it may directly damage the equipped satellite navigation device, resulting in that the aircraft cannot complete the intended task. SUMMARY

[0004] In view of one or more of the above defects or improvement needs of the prior art, the utility model provides an airborne multi-frequency anti-jamming satellite navigation array repeater antenna, which can effectively meet the application demand of the antenna in the extreme low temperature environment, and adapt to different types of satellite navigation receivers, improve the adaptability of the antenna, and reduce the application cost of the antenna.

[0005] To achieve the above purpose, the utility model provides an airborne multi-frequency anti-jamming satellite navigation array repeater antenna, which comprises an antenna shell formed with a containing cavity;

[0006] A plurality of antenna elements are arranged in the containing cavity, and a radio frequency channel is formed for each antenna element. Among the plurality of radio frequency channels, there is at least one first radio frequency channel for outputting anti-jamming radio frequency signals and at least one second radio frequency channel for outputting original radio frequency signals; and

[0007] A first radio frequency output interface corresponding to the first radio frequency channel is arranged on the antenna shell, and a second radio frequency output interface corresponding to the second radio frequency channel is arranged on the antenna shell; and

[0008] At least one temperature control unit is arranged in the antenna shell for monitoring the temperature in the antenna shell in real time and heating when the temperature is lower than a preset value.

[0009] As a further improvement of the utility model, the antenna shell comprises a radio frequency channel plate and an anti-interference processing plate arranged in layers.

[0010] A plurality of radio frequency channels are integrated on the radio frequency channel plate, and each antenna array element is in communication with a corresponding radio frequency channel.

[0011] The anti-interference processing plate is in communication with each first radio frequency channel on the radio frequency channel plate, receives at least one radio frequency signal transmitted by each first radio frequency channel, combines the signals into one, and then performs up-conversion processing and outputs from the first radio frequency output interface.

[0012] As a further improvement of the utility model, a radio frequency socket is arranged on the anti-interference processing plate corresponding to each radio frequency output interface, and each radio frequency output interface is connected to a corresponding radio frequency socket through a high-frequency cable.

[0013] As a further improvement of the utility model, the first radio frequency channel and the second radio frequency channel each comprise a dielectric filter, an amplitude limiter, a first-stage low-noise amplifier, a first-stage attenuation network, a second-stage low-noise amplifier, a second-stage attenuation network, and a surface acoustic wave filter arranged in sequence corresponding to the antenna array element.

[0014] A radio frequency channel chip is further arranged on the radio frequency channel plate, and the surface acoustic wave filter in each first radio frequency channel is connected to the radio frequency channel chip; and a corresponding intermediate frequency filter is further connected to the radio frequency channel chip for each first radio frequency channel, so that each signal processed by the radio frequency channel chip is output to the anti-interference processing plate by a corresponding intermediate frequency filter.

[0015] As a further improvement of the utility model, the dielectric filter is a microwave dielectric ceramic filter; and / or the amplitude limiter is a wideband amplitude limiting chip.

[0016] As a further improvement of the utility model, the two-stage low-noise amplifiers meet the following requirements: at a frequency of 1.2 GHz, the typical gain is not more than 20 dB, and the noise coefficient is less than 0.5 dB.

[0017] and / or

[0018] The two-stage attenuation networks each use a π-type attenuator network.

[0019] As a further improvement of the utility model, a metal cover is arranged corresponding to the radio frequency channel plate, the metal cover covers the radio frequency channel plate in the antenna shell; and

[0020] The radio frequency channel in the radio frequency channel plate is arranged on a side away from the metal cover, and the anti-interference processing plate is stacked on an end face of the radio frequency channel plate opposite to the metal cover.

[0021] As a further improvement of the utility model, the anti-interference processing plate cover is arranged in the metal shell.

[0022] And / or

[0023] The temperature control unit is arranged on an end face of the radio frequency channel plate opposite to the metal cover, and the temperature control unit is multiple and spacedly arranged on the end face.

[0024] As a further improvement of the utility model, five antenna array elements are arranged in the accommodating cavity, four of which are arranged in a square and are respectively connected to the first radio frequency channel to form a four-element array, and the remaining one antenna array element is arranged at the center of the four-element array and is connected to the second radio frequency channel to form a single-element array.

[0025] As a further improvement of the utility model, the antenna array element is a B3I / L1CA array element, which is made by adopting a multi-element laminated arrangement of a B3I array element and an L1CA array element.

[0026] The above-mentioned improvement technical features can be combined with each other as long as they do not conflict with each other.

[0027] Overall, compared with the prior art, the above technical scheme conceived by the utility model has the beneficial effects including:

[0028] (1) The airborne multi-frequency anti-interference satellite navigation array repeater antenna of the utility model is characterized in that a plurality of radio frequency channels are arranged in the antenna shell for a plurality of antenna array elements, and an anti-interference signal channel and an original signal channel are arranged in the plurality of radio frequency channels, so that the antenna can output anti-interference radio frequency signals and original radio frequency signals; at the same time, a temperature control unit is arranged in the antenna shell, so that the inner cavity temperature of the antenna shell can be heated by the temperature control unit when it is lower than a preset value, thereby ensuring that the antenna can work normally in an extremely low temperature environment, improving the application range of the antenna, and reducing the application cost of the antenna.

[0029] (2) The airborne multi-frequency anti-interference satellite navigation array repeater antenna of the utility model is characterized in that the antenna array elements are arranged by adopting a laminated design, and the arrangement of various components in the antenna shell is carried out, thereby effectively improving the compactness of the assembly of components in the antenna shell, reducing the volume of the antenna, and further improving the use convenience of the antenna.

[0030] (3) The airborne multi-frequency anti-interference satellite navigation array repeater antenna of the utility model, through the optimal selection of the components of the radio frequency channel, the signals received by the antenna array elements can be reliably processed and output after passing through the radio frequency channel, and the use performance of the antenna is ensured.

[0031] (4) The airborne multi-frequency anti-interference satellite navigation array repeater antenna of the utility model has compact structure and convenient setting, can effectively meet the use requirements of the antenna in an extremely low temperature environment, can realize the output requirements of the anti-interference radio frequency signals and the original signals, and thus the repeater antenna can be used in cooperation with the cheap satellite navigation receiver of the airborne terminal, the use performance of the antenna is improved, and the application cost of the antenna is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0033] Figure 1 It is the structure schematic view of the airborne multi-frequency anti-interference satellite navigation array repeater antenna in the embodiments of the utility model.

[0034] Figure 2 It is the principle architecture schematic view of two radio frequency channels of the repeater antenna in the embodiments of the utility model.

[0035] In all the drawings, the same reference signs represent the same technical features, and specifically:

[0036] 1, antenna shell; 101, first radio frequency output interface; 102, second radio frequency output interface; 103, power supply interface; 2, antenna array element; 3, radio frequency channel board; 4, anti-interference processing board; 5, metal cover; 6, temperature control unit. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model will be further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0038] In the description of the utility model, it is understood that, unless otherwise expressly provided and limited, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to a particular orientation, structure and operation of the indicated device or element. Therefore, it cannot be understood as limiting the utility model.

[0039] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise expressly limited.

[0040] In the utility model, unless otherwise expressly provided and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise expressly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In the utility model, unless otherwise expressly provided and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0042] Embodiment:

[0043] Please refer to Figures 1-2 The airborne multi-frequency anti-jamming satellite navigation array repeater antenna in the preferred embodiment of the utility model comprises an antenna shell 1 with one side opening and forming a containing cavity inside, and the containing cavity is used for containing various components required by the repeater antenna.

[0044] Specifically, various components of the retransmission antenna in the preferred embodiment are arranged in a laminated manner in the accommodating cavity of the antenna housing 1. The retransmission antenna includes a plurality of antenna elements 2 arranged inside the antenna housing 1, and the antenna elements 2 in the preferred embodiment are arranged at the top of the antenna housing 1. Meanwhile, a radio frequency channel plate 3 and an anti-interference processing plate 4 are arranged in the middle of the accommodating cavity, both of which are preferably printed boards, and two radio frequency output interfaces, i.e., a first radio frequency output interface 101 and a second radio frequency output interface 102, are arranged on the antenna housing 1 corresponding to the two printed boards.

[0045] More specifically, the two radio frequency output interfaces are further preferably arranged on the side wall of the antenna housing 1 and are preferably fixed by screws, as shown in FIG. Figure 1

[0046] Further, the first radio frequency output interface 101 is an anti-interference output interface, which is connected to an anti-interference radio frequency socket on the anti-interference processing plate 4 through a first cable, for subsequent output of the anti-interference processed radio frequency signal.

[0047] Correspondingly, the second radio frequency output interface 102 is an original signal output interface, which is connected to a radio frequency socket on the radio frequency channel plate 3 or the anti-interference processing plate 4 through a second cable, for output of the original signal without anti-interference processing.

[0048] Further, the radio frequency channel plate 3 in the preferred embodiment is used to form a radio frequency channel between the antenna elements 2 and the radio frequency output interfaces.

[0049] In actual arrangement, a metal cover 5 is arranged for the radio frequency channel plate 3, which covers the radio frequency channel plate 3, so as to avoid external suppression type strong interference from interfering with the signal output by the radio frequency channel plate 3.

[0050] Preferably, the anti-interference processing plate 4 in the preferred embodiment is also provided with a metal shell, and the anti-interference processing plate 4 is covered in the metal shell, so as to reduce the influence of external interference on the signal output by the anti-interference processing plate 4.

[0051] For example, in a specific preferred embodiment, the radio frequency sockets arranged for the two radio frequency output interfaces are integrated on the anti-interference processing plate 4, and the two radio frequency output interfaces are plugged with corresponding radio frequency sockets through high-frequency cables.

[0052] It can be understood that although the radio frequency socket of the second radio frequency output interface 102 is integrated on the anti-interference processing plate 4, the radio frequency channel corresponding to the second radio frequency output interface 102 is not connected to the anti-interference processing element on the anti-interference processing plate 4, but only the arrangement position of the radio frequency socket is preferably designed to facilitate wiring connection with the two radio frequency output interfaces.​

[0053] In the actual setting, each antenna array element 2 located at the top of the antenna shell 1 is arranged on the side surface of the metal cover 5 away from the radio frequency channel plate 3, and the radio frequency channel plate 3 is provided with a radio frequency channel for each antenna array element 2, thereby forming a plurality of radio frequency channels.

[0054] More specifically, the plurality of radio frequency channels includes at least one first radio frequency channel for outputting anti-interference radio frequency signals and at least one second radio frequency channel for outputting original signals.

[0055] For example, in the preferred embodiment as Figure 1 described, the number of antenna array elements 2 is five, at which time five radio frequency channels are formed, and the composition principle of the five radio frequency channels is as Figure 2 shown in the figure. Among them, four antenna array elements 2 are arranged in four independent first radio frequency channels, and each radio frequency channel includes an antenna array element 2, a dielectric filter, an amplitude limiter, a first-stage low-noise amplifier, a first-stage attenuation network, a second-stage low-noise amplifier, a second-stage attenuation network, and a surface acoustic wave filter connected in sequence, and the surface acoustic wave filters in each anti-interference radio frequency channel are connected to the same radio frequency channel chip, which is provided with a processing channel for each radio frequency channel, and an intermediate frequency filter is connected to each processing channel. Then, the radio frequency signals output by the respective intermediate frequency filters are transmitted to the anti-interference processing plate 4.

[0056] In the preferred embodiment, the anti-interference processing plate 4 preferably includes an FPGA chip and its peripheral circuits, such as an ADC circuit, a filter circuit, a clock circuit, etc., which can perform FIR filtering processing, down-conversion processing, FFT processing, autocorrelation processing, cross-correlation processing, matrix operation, weight calculation, IFFT processing, digital up-conversion, digital AGC, etc. on the multi-channel (four channels in the foregoing embodiment) digital intermediate frequency signals, combine the multi-channel radio frequency signals into one channel, and output the signal after up-conversion processing through the first radio frequency output interface 101.

[0057] Through the combined arrangement of the anti-interference processing plate 4 and the radio frequency channel plate 3, the anti-interference processing of the radio frequency signal can be completed, the interference signal can be fully suppressed, and the anti-interference ability of the signal can be improved.

[0058] Unlike the four radio frequency channels described above, the remaining one antenna array element 2 is arranged in a second radio frequency channel for outputting original signals, which includes a dielectric filter, an amplitude limiter, a first-stage low-noise amplifier, a first-stage attenuation network, a second-stage low-noise amplifier, a second-stage attenuation network, and a surface acoustic wave filter arranged in sequence for the antenna array element 2, and the radio frequency signal processed by the surface acoustic wave filter is directly output through the second radio frequency output interface 102.

[0059] For each radio frequency channel in the preferred embodiment, the dielectric filter, the surface acoustic filter and the intermediate frequency filter are mainly used to filter out the out-of-band spurious signals of the signal, so as to ensure that the harmonic spurious suppression of the amplified signal is high. At the same time, the limiter mainly plays a role of anti-jamming power burnout, avoiding that the signal strength input into the first stage low noise amplifier exceeds the maximum allowable input value. Secondly, the two-stage attenuation networks are respectively arranged after the two-stage low noise amplifiers, for adjusting the gain size of the input radio frequency signal, ensuring that the overall gain of the radio frequency channel is within a certain range, adjusting the impedance matching of the radio frequency channel in the adjusting circuit, so that the input standing wave, the output standing wave, the noise coefficient and other indicators of the whole radio frequency channel meet the design requirements.

[0060] Further, the front surface of the radio frequency channel board 3 in the preferred embodiment is arranged downward, i.e. the side of the radio frequency channel board 3 is arranged away from the metal cover 5. At the same time, the anti-interference processing board 4 is arranged on the back surface of the radio frequency channel board 3, as shown in FIG. 4, at this time, each high frequency cable is connected with the radio frequency socket on the anti-interference processing board 4 after passing through the radio frequency channel board 3. Figure 1

[0061] In addition, in the foregoing preferred embodiment, the four antenna array elements 2 accessed into the first radio frequency channel are arranged in a square shape, forming a four-element array, and the half-wavelength is distributed on the array surface; and the one antenna array element 2 accessed into the second radio frequency channel is arranged at the center position of the four-element array, forming a single-element array, as shown in FIG. 3. Figure 1

[0062] Exemplarily, in the preferred embodiment, the dielectric filter in each radio frequency channel preferably adopts a microwave dielectric ceramic filter, which is a filter made of microwave dielectric ceramic material, capable of forming good suppression to the out-of-band signal, and the in-band insertion loss and in-band fluctuation are extremely small. At the same time, the limiter in the preferred embodiment preferably adopts a wideband limiting chip, for ensuring that the maximum output value of the limiter will not exceed the maximum input signal of the first stage low noise amplifier when there is a large signal input.

[0063] Correspondingly, the first stage low noise amplifier and the second stage low noise amplifier in the preferred embodiment preferably meet the following requirements: the typical gain is not more than 20 dB and the noise coefficient is less than 0.5 dB at a frequency of 1.2 GHz. At the same time, the first attenuation network and the second attenuation network in the preferred embodiment preferably both adopt a π-type attenuator network, capable of adjusting the gain in the channel. In addition, the surface acoustic filter in the preferred embodiment is arranged at the front end of the radio frequency channel chip, for filtering the input radio frequency signal and preventing the crosstalk of the out-of-band signal.

[0064] ​​For the radio frequency channel chip in the preferred embodiment, the four-array output radio frequency signals enter the chip, the radio frequency channel chip is the module with the strongest up-conversion input radio frequency signals, the linearity is particularly important, the third-order intermodulation point is required to be high, and the noise figure is required to be low. In actual setting, the above conditions and technical index requirements are comprehensively considered, the high-performance four-channel anti-interference radio frequency receiving chip is selected in the preferred embodiment, and the chip is required to support local oscillator input and local oscillator output modes, and the chip can output a system clock for use of the rear-end anti-interference processing board 4.

[0065] In more detail, the antenna array elements 2 in the preferred embodiment are all B3I / L1CA array elements, and can receive B3I frequency point satellite signals and L1CA frequency point satellite signals. In actual setting, the B3I array elements and the L1CA array elements are arranged on the same array element in a multi-array element laminated arrangement manner, and then the antenna array elements 2 are obtained.

[0066] Further, in order to ensure that the repeater antenna can normally work in an extremely low temperature environment, at least one temperature control unit 6 is arranged in the antenna housing 1 in the preferred embodiment, each temperature control unit 6 is electrically connected with the power supply interface 103, and can heat the internal environment of the antenna housing 1 on the basis of power supply of the power supply interface 103.

[0067] In actual setting, each temperature control unit 6 can be correspondingly arranged on the inner wall surface of the antenna housing 1, or can be arranged on the back surface of the radio frequency channel board 3 at intervals as shown in the preferred embodiment. Figure 1

[0068] In more detail, the temperature control unit 6 in the preferred embodiment includes a built-in temperature sensor and a heating wire, the former is used for real-time monitoring of the internal environment temperature of the housing, and the latter is used for heating operation.

[0069] For the temperature control unit 6, it starts to work when the monitored temperature is lower than the set temperature, and controls the temperature in the antenna housing 1 within a certain range through control of each heating wire.

[0070] More preferably, the repeater antenna in the preferred embodiment is a square microstrip patch antenna, which is convenient for conformal.

[0071] The airborne multi-frequency anti-interference satellite navigation array repeater antenna in the utility model has compact structure, convenient setting, can effectively meet the use requirements of the antenna in an extremely low temperature environment, and can realize the output requirements of the anti-interference radio frequency signals and the original signals, so that the repeater antenna can be used in cooperation with the cheap satellite navigation receiver of the airborne end, improves the use performance of the antenna, and fully reduces the application cost of the antenna.

[0072] ​Those skilled in the art can understand that the above description is only preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An airborne multi-frequency anti-jamming satellite navigation array repeater antenna, comprising an antenna housing formed with a containing cavity; characterized in that, a plurality of antenna array elements are arranged in the containing cavity, and a radio frequency channel is formed for each antenna array element; and among the plurality of radio frequency channels, there is at least one first radio frequency channel for outputting anti-jamming radio frequency signals and at least one second radio frequency channel for outputting original radio frequency signals; and a first radio frequency output interface corresponding to the first radio frequency channel is arranged on the antenna housing, and a second radio frequency output interface corresponding to the second radio frequency channel is arranged on the antenna housing; and at least one temperature control unit is arranged in the antenna housing for real-time monitoring of the temperature in the antenna housing and heating when the temperature is lower than a preset value.

2. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 1, wherein, The antenna housing includes a radio frequency channel plate and an anti-jamming processing plate arranged in layers; a plurality of radio frequency channels are integrated on the radio frequency channel plate, and each antenna array element is in communication with a corresponding radio frequency channel; the anti-jamming processing plate is in communication with each first radio frequency channel on the radio frequency channel plate, for receiving at least one radio frequency signal transmitted by each first radio frequency channel, combining them into one, and then performing up-conversion processing and outputting from the first radio frequency output interface.

3. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 2, wherein, A radio frequency socket corresponding to each radio frequency output interface is arranged on the anti-jamming processing plate, and each radio frequency output interface is connected to a corresponding radio frequency socket through a high-frequency cable.

4. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 2, wherein, The first radio frequency channel and the second radio frequency channel each include a dielectric filter, a limiter, a first-stage low-noise amplifier, a first-stage attenuation network, a second-stage low-noise amplifier, a second-stage attenuation network, and a surface acoustic wave filter arranged in sequence corresponding to an antenna array element; The radio frequency channel plate also has a radio frequency channel chip, and the surface acoustic wave filter in each first radio frequency channel is connected to the radio frequency channel chip; and for each first radio frequency channel, an intermediate frequency filter is also connected and arranged on the radio frequency channel chip, so that each signal processed by the radio frequency channel chip is output to the anti-jamming processing plate by the corresponding intermediate frequency filter.

5. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 4, wherein, The dielectric filter uses a microwave dielectric ceramic filter; and / or the limiter uses a wideband limiting chip.

6. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 4 or 5, wherein, The two-stage low-noise amplifiers each meet the following requirements: at a frequency of 1.2 GHz, the typical gain is not more than 20 dB, and the noise coefficient is less than 0.5 dB; and / or The two-stage attenuation networks each use a π-type attenuator network.

7. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of any one of claims 2-5, wherein, A metal cover is arranged corresponding to the radio frequency channel plate, and the metal cover covers the radio frequency channel plate in the antenna housing; and The radio frequency channels in the radio frequency channel plate are arranged on the side facing away from the metal cover, and the anti-jamming processing plate is arranged on the end face of the radio frequency channel plate opposite the metal cover.

8. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 7, wherein, The anti-jamming processing plate is covered in a metal shell; and / or The temperature control units are arranged on the end face of the radio frequency channel plate opposite the metal cover, and the temperature control units are spaced apart on the end face.

9. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of any one of claims 2-5, wherein, Four of the five antenna elements are arranged in a square and connected to a first radio frequency channel to form a four-element array, and the remaining one antenna element is arranged at the center of the four-element array and connected to a second radio frequency channel to form a single-element array.

10. The airborne multi-frequency anti-jam satellite navigation array repeater antenna of claim 9, wherein, The antenna elements are B3I / L1CA elements, which are made by a multi-element laminated arrangement of B3I elements and L1CA elements.

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