WO2024104125A1

WO2024104125A1 - Anti-jamming antenna

Info

Publication number: WO2024104125A1
Application number: PCT/CN2023/128027
Authority: WO
Inventors: 王冠君; 朱良; 谢亚运; 陆超; 任超超; 种阳
Original assignee: 上海海积信息科技股份有限公司
Priority date: 2022-11-18
Filing date: 2023-10-31
Publication date: 2024-05-23
Also published as: CN115764255A; CN115764255B

Abstract

Embodiments of the present application relate to the technical field of communications, and provide an anti-jamming antenna, comprising: an antenna array used for receiving and transmitting a signal; a signal amplifier assembly used for amplifying the signal; a space-domain anti-jamming device used for performing space-domain anti-jamming processing on the signal; a first power supply unit used for supplying power to the space-domain anti-jamming device and supplying power to the signal amplifier assembly; a second power supply unit used for supplying power to the signal amplifier assembly; a first switch module used for determining the working state of the first switch module, wherein when the first switch module is in an on state, the signal is transmitted after being processed by a signal amplifier and the space-domain anti-jamming device; and a second switch module used for determining the working state of the second switch module, wherein when the second switch module is in an on state, the signal is transmitted after being processed by the signal amplifier. By means of the described design, the effect of greatly reducing power consumption can be achieved.

Description

An anti-interference antenna

Technical Field

The embodiments of the present application relate to the field of communication technology, and in particular, to an anti-interference antenna.

Background technique

At present, the adaptive antenna array anti-interference technology is often used in the field of satellite navigation. According to the different incident angles of strong interference signals (positioned by both elevation and azimuth), the antenna pattern can be adjusted in real time to produce a notch in the interference direction, so as to achieve the purpose of suppressing and eliminating strong interference signals. It is a kind of spatial anti-interference processing implemented according to the characteristics of the antenna array pattern. The so-called adaptation means that the antenna array can calculate the corresponding amplitude and phase weighting factors in real time according to the different spatial distribution states (azimuth and elevation) of the interference signals, and automatically adjust the antenna pattern, so as to achieve the purpose of suppressing randomly distributed interference signals. However, the spatial anti-interference processing mechanism is a high-power component. Keeping it in working state will cause relatively high power consumption and greatly shorten the life of the system.

In summary, there is a need for an airspace anti-interference antenna that can reduce power consumption.

Summary of the invention

The embodiment of the present application provides an anti-interference antenna, which solves the problem of high system power consumption and thus extends the service life of the system.

An embodiment of the present application provides an anti-interference antenna, including an antenna array, for transmitting and receiving signals;

A signal amplifier component is connected to the antenna array and is used to amplify the signal;

The airspace anti-interference device is connected to the signal amplifier component through the first switch module and is used to perform airspace anti-interference processing on the signal;

A first power supply unit is connected to the airspace anti-interference device, and is used to supply power to the airspace anti-interference device, and to supply power to the signal amplifier component through the airspace anti-interference device;

A second power supply unit is connected to the signal amplifier assembly through a second switch module and is used to supply power to the signal amplifier assembly;

A first switch module, used to determine the working state of the first switch module according to the output of the first power supply unit or the second power supply unit; when the first switch module is in the on state, the signal is transmitted after being processed by the signal amplifier component and the airspace anti-interference device;

The second switch module is used to determine the working state of the second switch module according to the output of the first power supply unit or the second power supply unit; when the second switch module is in the on state, the signal is transmitted after being processed by the signal amplifier component.

In the above design, a first switch module and a second switch module are set to perform corresponding switching on whether the signal is in an anti-interference state during transmission. The first switch module and the second switch module use different voltage changes as the switching basis. When anti-interference processing is required, the signal is passed through the signal amplifier component and the airspace anti-interference device to achieve anti-interference processing. When non-anti-interference processing is required, the signal is not transmitted through the airspace anti-interference device, but directly transmitted through the signal amplifier component. In this non-anti-interference processing, the airspace anti-interference device and part of the signal transmission channel are turned off, which can greatly reduce the power consumption of the system.

In a possible design, the antenna array includes a first antenna group and a second antenna group; the first antenna group and the second antenna group respectively have corresponding signal amplifier components, airspace anti-interference devices, first switch modules and second switch modules;

The anti-interference antenna also includes a combiner; the combiner is respectively connected to the airspace anti-interference devices corresponding to the first antenna group through the first switch module and the second antenna group through the second switch module, and is used to combine and output the first signal received by the first antenna group and the second signal received by the second antenna group.

In the above design, the antenna array includes a first antenna group and a second antenna group, and the first antenna group and the second antenna group respectively operate in different signal frequency bands. Each group of antennas has a complete signal transmission channel, that is, it has a corresponding signal amplifier component, an airspace anti-interference device, a first switch module and a second switch module. Among them, the combiner is mainly used to combine the receiving and transmitting signals of the first antenna group and the second antenna group before transmitting them out. Therefore, signals from different frequency bands will have their corresponding signal transmission channels, so as to achieve mutual non-interference.

In one possible design, the antenna array further includes a third antenna group; the third antenna group has corresponding A signal amplifier assembly;

The third antenna group is connected to the combiner through a corresponding signal amplifier component;

The signal amplifier component corresponding to the third antenna group is powered by the first power supply unit or the second power supply unit.

In the above design, the antenna array includes a third antenna group in addition to the first antenna group and the second antenna group mentioned above. The third antenna group also has its corresponding signal transmission channel, that is, it has a corresponding signal amplifier, a combiner, and a first power supply unit or a second power supply unit for powering it. The third antenna group does not need to pass through the airspace anti-interference device during signal transmission, thereby reducing the power consumption of the system.

In a possible design, the third antenna group includes a transmitting antenna group and a receiving antenna group; the signal amplifier component corresponding to the transmitting antenna group is powered by a first power supply unit; a first Schottky diode is provided between the first power supply unit and the signal amplifier component corresponding to the transmitting antenna group; the first Schottky diode is used to prevent the output of the first power supply unit from flowing back to the second power supply unit;

The signal amplifier component corresponding to the receiving antenna group is powered by the second power supply unit; a second Schottky diode is arranged between the second power supply unit and the signal amplifier component corresponding to the transmitting antenna group; the second Schottky diode is used to prevent the output of the second power supply unit from flowing back to the first power supply unit.

In the above design, the third antenna group is further divided into a transmitting antenna group and a receiving antenna group. The transmitting antenna group and the receiving antenna group are respectively provided with a first Schottky diode and a second Schottky diode between the first power supply unit and the signal amplifier component and between the second power supply unit and the signal amplifier component. The main function of the Schottky diode is to prevent voltage backflow. With the above design, the transmission path of the transmitting antenna group can only be powered by the first power supply unit for signal transmission; the transmission path of the receiving antenna group can only be powered by the second power supply unit for signal reception, and reverse transmission is not possible.

In one possible design, the first switch module is connected in series with the second switch module; the first power supply unit is in a working state at a first power supply voltage; the second power supply unit is in a working state at a second power supply voltage; the first supply voltage is different from the second supply voltage; the first switch module and the second switch module are used to determine the working state according to the output of the second power supply unit.

In the above design, the first switch module and the second switch module are connected in series, and different power supply voltages are used. Put different power supply units in working state to achieve the switching of state modes. The switching between the two modes adopts switch design, which is relatively simple to implement and has fast switching speed.

In a possible design, the first antenna group is used for satellite navigation positioning in the B3 frequency band; the second antenna group is used for satellite regional short message communication.

In the above design, the first antenna group is mainly used for transmitting signals in the B3 frequency band. The first antenna group is mainly used for signals in the 1.2GHz frequency band. When the signal is transmitted, the main function is to perform positioning. The second antenna group can be used to receive signals to achieve short message communication in the satellite area. The second antenna group is used to receive signals, which increases the function of short message communication in the satellite area under anti-interference state.

In a possible design, the receiving antenna group includes a first receiving antenna for satellite navigation positioning in the B1 frequency band and a second receiving antenna for satellite regional short message communication.

In the above design, the receiving antenna mainly comes from two paths, one is the first receiving antenna of the satellite navigation positioning of the B1 frequency band of the third antenna group, and the other is the second receiving antenna of the third antenna group for satellite regional short message communication. In the above design, the third antenna group includes the transmitting antenna group and the receiving antenna group, which can make the signal transmission more accurate and meet the satellite regional short message communication function.

In a possible design, the first power supply unit is a power converter; and the second power supply unit is a voltage comparator.

In the above design, the first power supply unit is a power converter, which mainly uses components such as inductors and capacitors as energy storage components to complete the voltage conversion function. Its main function is to achieve voltage conversion and stable output with high efficiency. The working condition of the power converter cannot be lower than 9 volts. When it is working, it outputs 5 volts based on the voltage conversion function. The second power supply unit is a voltage comparator, and the working range of the voltage comparator is 4.5 volts-5 volts. The first power supply unit and the second power supply unit use different power supplies to ensure that the voltages of the first power supply unit and the second power supply unit are different, thereby achieving two modes.

In a possible design, the third antenna group is located at the center of the chassis; wherein the transmitting antenna group, the first receiving antenna and the second receiving antenna are stacked from top to bottom; the first antenna group and the second antenna group are arranged in an alternating manner around the center of the chassis; the radius of the ring where the first antenna group is located is greater than the radius of the ring where the second antenna group is located.

In the above design, the first antenna group, the second antenna group, and the third antenna group are set according to certain positions. The third antenna group is located at the center of the chassis, and the transmitting antenna group, the first receiving antenna, and the second receiving antenna in the third antenna group are stacked from top to bottom; the first antenna group and the second antenna group are staggered around the center of the chassis, and the radius of the first antenna group is larger than that of the second antenna group, that is, the first antenna group is at the outermost periphery. The moderate placement without affecting signal transmission, the stacking design of multiple array elements, and the equal distance placement of the antennas in the first antenna group and the second antenna group greatly reduce the diameter of the array, save space, and achieve miniaturization.

In a possible design, the first antenna group and the second antenna group are respectively arranged to be tilted relative to the chassis, and the tilt angle is any angle between 10 degrees and 15 degrees.

In the above design, the first antenna group and the second antenna group are not placed horizontally on the chassis, but are set at a certain tilt angle with the chassis, and the angle range is any angle between 10 degrees and 15 degrees. This design can improve the low elevation gain effect of the first antenna group and the second antenna group and improve the isolation between the antenna array elements in the first antenna group and the second antenna group.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of an overall circuit of an anti-interference antenna provided in an embodiment of the present application;

FIG2 is a schematic diagram of an overall circuit of another anti-interference antenna provided in an embodiment of the present application;

FIG3 is a schematic diagram of an overall circuit of another anti-interference antenna provided in an embodiment of the present application;

FIG4 is a schematic diagram of a fourth circuit of an anti-interference antenna provided in an embodiment of the present application;

FIG5 is a schematic diagram of another series circuit provided in an embodiment of the present application;

FIG6 is a schematic top view of an anti-interference antenna provided in an embodiment of the present application;

FIG7 is a side view schematic diagram of an anti-interference antenna provided in an embodiment of the present application;

FIG8 is a schematic diagram of a detailed circuit portion of an anti-interference antenna provided in an embodiment of the present application;

FIG. 9 is a schematic diagram of an overall circuit of another anti-interference antenna provided in an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

An antenna is a converter that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium (usually free space), or vice versa. Adaptive antenna array anti-interference technology is currently commonly used in the field of satellite navigation. It can adjust the antenna pattern in real time according to the different incident angles of strong interference signals (positioned in both elevation and azimuth angles) to produce notches in the direction of interference, thereby achieving the purpose of suppressing and eliminating strong interference signals. It is a spatial anti-interference process implemented based on the antenna array pattern characteristics.

The anti-interference antenna does not need to be in the anti-interference processing mode all the time. It only needs to perform anti-interference processing when the received signal is in a strong interference signal. In the signal state without strong interference, no anti-interference processing is required. However, in the current existing technology, the adaptive antenna array anti-interference technology is mainly used. The received signal is transmitted through the anti-interference processing device. The anti-interference processing device itself is a high-power consumption component. If it is always in the working state, it will cause relatively large power consumption, thereby greatly shortening the working life of the system.

An embodiment of the present application provides an anti-interference antenna, as shown in Figure 1. Figure 1 is an overall circuit diagram of an anti-interference antenna provided in an embodiment of the present application, including an antenna array 100, a signal amplifier component 200, an airspace anti-interference device 300, a first switch module 400, a second switch module 500, a first power supply unit 600 and a second power supply unit 700. One end of the signal amplifier component 200 is connected to the antenna array 100, the other end of the signal amplifier component 200 is connected to the first end of the airspace anti-interference device 300 through the first switch module 400, the second end of the airspace anti-interference device 300 is connected to the first power supply unit 600, and the signal amplifier component 200 is also connected to the second power supply unit 700 through the second switch module 500.

The first switch module 400 is used to confirm that the first power supply unit 600 or the second power supply unit 700 controls the first switch module 400 to be in a working state. At this time, the first switch module 400 is in a conducting state, forming an antenna array 100 for transmitting and receiving signals to transmit signals. The antenna array 100 transmits the received signal after processing 300 through the signal amplifier component 200 and the airspace anti-interference device;

The second switch module 500 is used to confirm that the first power supply unit 600 or the second power supply unit 700 controls the second switch module 500 to be in a working state. At this time, the second switch module 500 is in a conductive state, forming an antenna array 100 for receiving and sending signals to transmit signals. The antenna array 100 processes the received signal through the signal amplifier component 200 and then transmits the signal.

In an example, as shown in Figure 1, the first switch module 400 controls the first switch module 400 to be in a working state through the first power supply unit 600, so that the first switch module 400 is in a conductive state to transmit signals, and the antenna array 100 processes the received signal through the signal amplifier component 200 and the airspace anti-interference device 300 for signal transmission; the second switch module 500 controls the second switch module 500 to be in a working state through the second power supply unit 700, so that the second switch module 500 is in a conductive state to transmit signals, and the antenna array 100 processes the received signal through the signal amplifier component 200 for signal transmission.

It should be understood that the above-mentioned implementation methods are various. The first power supply unit 600 mentioned above can control the first switch module 400, and the second power supply unit 700 can control the second switch module 500; the second power supply unit 700 can also indirectly control the first switch module 400 and the second switch module 500, or other control methods can be used. As long as the signal transmission is divided into two modes, the specific implementation method is not limited here.

In the above technical solution, the first switch module 400 and the second switch module 500 are set to switch the signal whether it is in the anti-interference state during transmission. The first switch module 400 and the second switch module 500 use different voltage changes as the switching basis. When anti-interference processing is required, the signal passes through the signal amplifier component 200 and the airspace anti-interference device 300 to achieve anti-interference processing. When non-anti-interference processing is required, the signal does not pass through the airspace anti-interference device 300 for signal transmission, but is directly transmitted through the signal amplifier component 200. In this non-anti-interference processing, the airspace anti-interference device 300 and part of the signal transmission channel are closed, which can greatly reduce the power consumption of the system.

In one possible implementation, an embodiment of the present application provides an overall circuit diagram of another anti-interference antenna, as shown in the circuit diagram of Figure 2, in which the internal structure of the antenna array 100 is subdivided on the basis of Figure 1, including a first antenna group 101 and a second antenna group 102, each antenna group having an overall set of channels to provide a signal transmission channel for the signal, that is, corresponding signal amplifier components 200, airspace anti-interference devices 300, first switch modules 400 and second switch modules 500 respectively.

On this basis, a combiner 800 is added, which is respectively connected to the first antenna group 101 through the first switch module 400 and the second antenna group 102 through the second switch module 500 corresponding to the airspace anti-interference device 300. The combiner 800 is used to combine and output the first signal received by the first antenna group 101 and the second signal received by the second antenna group 102.

The antenna array 100 is distinguished by signals of different frequency bands. By subdividing the antenna array 100 into the first antenna group 101 and the second antenna group 102, signals of different frequency bands can be received. There is a complete signal path for transmitting signals of different frequency bands. The combiner 800 transmits the first signal from the first antenna group 101 and the second signal from the second antenna group 102 into the combiner 800, and transmits them out after being processed by the combiner 800. Among them, the anti-interference frequency bands used by the airspace anti-interference device 300 in the first antenna group 101 and the second antenna group 102 are different. For example, the signal frequency received by the first antenna group 101 can be 1.2GHz, and the signal frequency band received by the second antenna group 102 can be 2.4GHz.

The first antenna group 101 is used for satellite navigation positioning in the B3 frequency band; the second antenna group 102 is specifically used for satellite area short message communication.

The first antenna group 101 is used for signal positioning function in both anti-interference state and non-anti-interference state; similarly, the second antenna group 102 is used for satellite area short message communication function in both states.

In one example, the first antenna group 101 in the antenna array 100 receives a signal. When the first power supply unit 600 controls the first switch module 400 to be in a working state, the signal received by the antenna array 100 is amplified by the signal amplifier component 200, and the amplified signal is processed by the airspace anti-interference device 300 for anti-interference, and the signal after the anti-interference processing is processed by the combiner 800 and then transmitted. go.

In another example, the first antenna group 101 in the antenna array 100 receives a signal. When the second power supply unit 700 controls the second switch module 500 to be in working state, the signal received by the antenna array 100 will be amplified by the signal amplifier component 200, and the amplified signal will be processed for anti-interference by the spatial anti-interference device 300. The signal after the anti-interference processing will be transmitted after being processed by the combiner 800.

The above examples are given with the first antenna group 101 in different modes. The working state of the second antenna group 102 is also divided into the above different modes. The only difference is that the frequency bands of the received antenna signals are different, which will not be given examples one by one here.

In one possible implementation, an embodiment of the present application provides an overall circuit diagram of another anti-interference antenna, as shown in Figure 3. Figure 3 adds a third antenna group 103 on the basis of Figure 2, and the third antenna group 103 has a corresponding signal amplifier component 200; the third antenna group 103 is connected to the combiner 800 through the corresponding signal amplifier component 200; the signal amplifier component 200 corresponding to the third antenna group 103 is powered by the first power supply unit 600 or the second power supply unit 700.

As shown in FIG. 3 , the second power supply unit 700 supplies power to the signal amplifier component 200 , and the third antenna group 103 amplifies the received signal through the signal amplifier component 200 and transmits the signal directly to the combiner 800 for processing and transmission.

On the basis of the above implementation, the embodiment of the present application realizes signal transmission by further refining the third antenna group 103 and introducing a Schottky diode. Specifically, as shown in FIG4 , FIG4 is a schematic diagram of a fourth circuit of an anti-interference antenna provided by the embodiment of the present application, and the third antenna group 103 includes a transmitting antenna group 1031 and a receiving antenna group 1032; the signal amplifier component 200 corresponding to the transmitting antenna group 1031 is powered by the first power supply unit 600; a first Schottky diode 900 is provided between the first power supply unit 600 and the signal amplifier component 200 corresponding to the transmitting antenna group 1031; the first Schottky diode 900 is used to prevent the output of the first power supply unit 600 from flowing back to the second power supply unit 700;

The signal amplifier component 200 corresponding to the receiving antenna group 1032 is powered by the second power supply unit 700; the second power supply unit 700 is connected to the signal amplifier component 200 corresponding to the transmitting antenna group 1031. A second Schottky diode 1000 is provided; the second Schottky diode 1000 is used to prevent the output of the second power supply unit 700 from flowing back to the first power supply unit 600 .

Among them, the signal amplifier component 200 used for each antenna group is different. For example, the signal amplifier component 200 corresponding to the first antenna group 101, the second antenna group 102 and the receiving antenna group 1032 in the third antenna group 103 all use a low-noise amplifier, but the signal amplifier component 200 for the transmitting antenna group 1031 in the third antenna group 103 uses a power amplifier. The low-noise amplifier emphasizes low noise coefficient and is mainly used for the front end of the receiving signal. It mainly has a small noise coefficient to prevent noise from drowning out useful signals and plays an amplifying role in signal filtering. The power amplifier mainly emphasizes that high power should be used for the last stage of signal transmission, mainly to increase the power of the transmitted signal and reduce the noise interference of noise in signal transmission. The Schottky diode is a semiconductor for unidirectional transmission. Based on its own characteristics, in the circuit diagram, the power supply unit supplies power to the signal amplifier component 200 in a unidirectional direction.

In one example, the second power supply unit 700 supplies power to the signal amplifier component 200 through the second Schottky diode 1000. When the receiving antenna group 1032 receives a signal, the signal amplifier component 200 amplifies the signal and transmits the amplified signal to the combiner 800 for processing and then outputs the signal.

In another example, the first power supply unit 600 supplies power to the signal amplifier component 200 through the first Schottky diode 900 , and the signal from the combiner 800 is amplified by the signal amplifier component 200 and then transmitted through the transmitting antenna group 1031 .

4, the receiving antenna group 1032 in the third antenna group 103 is further divided into a first receiving antenna for satellite navigation positioning in the B1 frequency band and a second receiving antenna for satellite regional short message communication. The first receiving antenna group and the second receiving antenna implement different functions.

In one example, the signal amplifier component 200 is powered by the second power supply unit 700, which is used to amplify the signal received by the first receiving antenna group and pass it to the combiner 800 for processing and transmission to achieve signal positioning; similarly, the second receiving antenna group also realizes the signal communication function in the above manner.

In a possible implementation, the first switch module 400 is connected in series with the second switch module 500; The first power supply unit 600 is in a working state at a first power supply voltage; the second power supply unit 700 is in a working state at a second power supply voltage; the first power supply voltage is different from the second power supply voltage; the first switch module 400 and the second switch module 500 are used to determine the working state according to the output of the second power supply unit 700.

Among them, the series connection mode of the first switch module 400 and the second switch module 500 is also diverse. As shown in Figure 1, a series connection mode is provided in an embodiment of the present application, and the first switch module 400 and the second switch module 500 are connected in series through an airspace anti-interference device 300. As shown in Figure 5, Figure 5 is a circuit schematic diagram of another series connection mode provided in an embodiment of the present application, and in Figure 5, the first switch module 400 and the second switch module 500 are directly connected in series. Similarly, the main basis for distinguishing the first power supply unit 600 and the second power supply unit 700 is the different voltage values, and the power supply states for different voltage values are also different. Specifically, the first power supply unit 600 corresponds to a state where anti-interference processing of the signal is required, and the second power supply unit 700 corresponds to a state where anti-interference processing of the signal is not required.

The distinction between the first power supply unit 600 and the second power supply unit 700 is based on different voltage values, which are mainly achieved through different electronic devices. The first power supply unit is a power converter, and the second power supply unit is a voltage comparator.

Among them, the main function of the power converter is to achieve voltage conversion and stable output with high efficiency. The voltage of the power converter cannot be lower than 9V when it is working. When it is working, it is converted to 5V to power the circuit. The working range of the voltage comparator is 4.5V-5V. Therefore, based on the different power supply voltages of the voltage comparator and the power converter, free switching between two different states is achieved, and the two power supply systems do not interfere with each other.

The specific placement position of the anti-interference antenna is shown in Figure 6, which is a top-down schematic diagram of an anti-interference antenna provided in an embodiment of the present application, including a third antenna group 103 located in the center of the chassis; wherein the transmitting antenna group 1031, the first receiving antenna and the second receiving antenna are stacked from top to bottom; the first antenna group 101 and the second antenna group 102 are arranged in an interlaced manner around the center of the chassis; the radius of the ring where the first antenna group 101 is located is greater than the radius of the ring where the second antenna group 102 is located.

Wherein, both the first antenna group 101 and the second antenna group 102 can be similar to the third antenna group 103. The same is subdivided downward, as shown in Figure 7, taking the first antenna group 101 including antenna groups B3-1, B3-2, B3-3, and B3-4; the second antenna group 102 including antenna groups S-1, S-2, S-3, and S-4 as an example, the placement position of the transmitting antenna group 1031 in the third antenna group 103 is located at the top, the second receiving antenna is connected to the chassis, and the first receiving antenna is located between the transmitting antenna group 1031 and the second receiving antenna. The antenna groups B3-1, B3-2, B3-3, and B3-4 in the first antenna group 101 are arranged around the center of the chassis, and the distances between adjacent B3-1, antenna groups B3-2, B3-3, and B3-4 are equal in length and are generally set to between 90-110 mm, and are spaced 90 degrees apart. Similarly, the second antenna group 102 is also the same. However, the radius of the first antenna group 101 is greater than the radius of the second antenna group 102, that is, the distance from the circle formed by the first antenna group 101 to the center of the chassis is greater than the distance from the circle formed by the second antenna group 102 to the center of the chassis.

Next, let's look at the placement of the antennas above, as shown in Figure 7, which is a side view schematic diagram of an anti-interference antenna provided in an embodiment of the present application. The first antenna group 101 and the second antenna group 102 are respectively tilted relative to the chassis, with the tilt angle being any angle between 10 degrees and 15 degrees. Among them, the use of a tilted design can improve the isolation between the antennas.

As shown in Figure 8, Figure 8 is a schematic diagram of a detailed circuit portion of an anti-interference antenna provided in an embodiment of the present application. The first switch module 400 only controls the antenna group B3-4 in the first antenna group 101, that is, in the anti-interference state, that is, the first power supply unit 600 supplies power, so that the first switch module 400 is in the on state, B3-1, B3-2, B3-3, and B3-4 all receive and transmit signals. In the non-anti-interference state, that is, the second power supply unit 700 supplies power, so that the second switch module 500 is in the on state, only the antenna group B3-4 receives and transmits signals.

In an example, in the anti-interference state, the first power supply unit 600 supplies power to the signal amplifier component 200 corresponding to its antenna groups B3-1, B3-2, B3-3, and B3-4, and is used to amplify the signals received from the antenna groups B3-1, B3-2, B3-3, and B3-4, and then perform anti-interference processing on the signals through the airspace anti-interference device 300, and transmit the processed signals through the combiner 800.

In another example, in the non-anti-interference state, the second power supply unit 700 supplies power to the signal amplifier components 200 corresponding to the antenna groups B3-1, B3-2, B3-3, and B3-4, and is used to amplify the signals received from the antenna groups B3-1, B3-2, B3-3, and B3-4, and transmit the amplified signals through the combiner 800. go out.

It should be understood that the first antenna group for positioning signal transmission in the non-anti-interference state is only provided with a switch on the antenna group B3-4 because the function of the anti-interference antenna can be realized based on the above scheme, and it is not necessary to set each antenna group B3-1, B3-2, B3-3, and B3-4, thereby reducing unnecessary waste. Of course, the first switch module 400 can also be provided to realize circuit transmission, which is not specifically limited here.

Based on the above-mentioned first antenna group 101 as an example, the second antenna group 102 is also applicable to the above-mentioned solution. Continue as shown in Figure 8. In an example, in the anti-interference state, the first power supply unit 600 supplies power to the signal amplifier component 200 corresponding to its antenna group S-1, S-2, S-3, and S-4, which is used to amplify the signals received from the antenna groups S-1, S-2, S-3, and S-4, and then perform signal anti-interference processing through the airspace anti-interference device 300, and transmit the processed signals through the combiner 800.

In another example, in the non-anti-interference state, the second power supply unit 700 supplies power to the signal amplifier components 200 corresponding to its antenna groups S-1, S-2, S-3, and S-4, and is used to amplify the signals received from the antenna groups S-1, S-2, S-3, and S-4, and transmit the amplified signals through the combiner 800.

Based on this, the present application can also provide a circuit schematic diagram of another implementation method of an anti-interference antenna, by adding a corresponding switch to each array element in the first antenna group 101 and the second antenna group 102, simplifying the power supply unit to control different modes to achieve the effect of reducing power consumption. As shown in Figure 9, Figure 9 is another overall circuit schematic diagram of an anti-interference antenna provided in an embodiment of the present application. When the first antenna group 101 and the second antenna group 102 distinguish between the anti-interference state and the non-anti-interference state, the first power supply unit 600 and the second power supply unit 700 are no longer required to distinguish. It is only necessary to supply power through an integral power supply unit 1100, and the first switch module 400 and the second switch module 500 are used to control the signal transmission in the anti-interference state or the non-anti-interference state.

In one example, in the anti-interference state, the power supply unit supplies power to the airspace anti-interference device 300 and the signal amplification component 200, and the different array elements in the first antenna group 101 and the second antenna group 102 receive signals through the signal amplification component 102, and the first switch module 400 is closed and in the on state, and the second switch module 500 directly connected to the first switch module 400 is disconnected, and the signals are respectively input into the airspace anti-interference device 300 for anti-interference processing, and then transmitted through the second switch module 500. The signal is processed by the combiner 800 and then transmitted. The second switch module 500 connected to the spatial domain anti-interference processing device 300 is in a conducting state.

In summary, the embodiments of the present application provide a multi-mode, miniaturized, low-power anti-interference antenna.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

An anti-interference antenna, characterized by comprising:

Antenna array, used to send and receive signals;

A signal amplifier component, connected to the antenna array, for amplifying the signal;

An airspace anti-interference device, connected to the signal amplifier component via the first switch module, for performing airspace anti-interference processing on the signal;

A first power supply unit, connected to the airspace anti-interference device, used to supply power to the airspace anti-interference device and supply power to the signal amplifier component through the airspace anti-interference device;

A second power supply unit, connected to the signal amplifier assembly via a second switch module, and used for supplying power to the signal amplifier assembly;

The first switch module is used to determine the working state of the first switch module according to the output of the first power supply unit or the second power supply unit; when the first switch module is in the on state, the signal is transmitted after being processed by the signal amplifier component and the airspace anti-interference device;

The second switch module is used to determine the working state of the second switch module according to the output of the first power supply unit or the second power supply unit; when the second switch module is in the on state, the signal is transmitted after being processed by the signal amplifier component.
The anti-interference antenna according to claim 1, characterized in that the antenna array comprises a first antenna group and a second antenna group;

The first antenna group and the second antenna group respectively have corresponding signal amplifier components, airspace anti-interference devices, first switch modules and second switch modules;

The anti-interference antenna also includes a combiner;

The combiner is connected to the airspace anti-interference device corresponding to the first antenna group through the first switch module and the second antenna group through the second switch module, respectively, and is used to combine and output the first signal received by the first antenna group and the second signal received by the second antenna group.
The anti-interference antenna according to claim 2, characterized in that the antenna array further comprises a third antenna group; the third antenna group has a corresponding signal amplifier component;

The third antenna group is connected to the combiner via a corresponding signal amplifier component;

The signal amplifier component corresponding to the third antenna group is powered by the first power supply unit or the second power supply unit.
The anti-interference antenna according to claim 3, characterized in that the third antenna group includes a transmitting antenna group and a receiving antenna group;

The signal amplifier component corresponding to the transmitting antenna group is powered by the first power supply unit; a first Schottky diode is provided between the first power supply unit and the signal amplifier component corresponding to the transmitting antenna group; the first Schottky diode is used to prevent the output of the first power supply unit from flowing back to the second power supply unit;

The signal amplifier component corresponding to the receiving antenna group is powered by the second power supply unit; a second Schottky diode is arranged between the second power supply unit and the signal amplifier component corresponding to the transmitting antenna group; the second Schottky diode is used to prevent the output of the second power supply unit from flowing back to the first power supply unit.
The anti-interference antenna according to any one of claims 1 to 4, characterized in that the first switch module is connected in series with the second switch module;

The first power supply unit is in a working state at a first power supply voltage; the second power supply unit is in a working state at a second power supply voltage; the first power supply voltage is different from the second power supply voltage;

The first switch module and the second switch module are used to determine a working state according to an output of the second power supply unit.
The anti-interference antenna according to claim 5, characterized in that the first antenna group is used for satellite navigation positioning in the B3 frequency band;

The second antenna group is used for satellite area short message communication.
The anti-interference antenna according to claim 6 is characterized in that the receiving antenna group includes a first receiving antenna for satellite navigation positioning in the B1 frequency band and a second receiving antenna for satellite regional short message communication.
The anti-interference antenna according to claim 3, characterized in that the first power supply unit is A power converter; the second power supply unit is a voltage comparator.
The anti-interference antenna according to claim 6, characterized in that the third antenna group is arranged at the center of the chassis; wherein the transmitting antenna group, the first receiving antenna and the second receiving antenna are stacked from top to bottom;

The first antenna group and the second antenna group are arranged in an interlaced manner around the center of the chassis;

The radius of the ring where the first antenna group is located is greater than the radius of the ring where the second antenna group is located.
The anti-interference antenna according to claim 9 is characterized in that the first antenna group and the second antenna group are respectively arranged to be inclined relative to the chassis, and the inclination angle is any angle between 10 degrees and 15 degrees.