Multifunctional integrated active channel and radar test kit

Abstract

The application discloses a multifunctional integrated active channel and radar test assembly. The radio frequency component module and the digital component module of the multifunctional integrated active channel are arranged in a stack; the digital component module is integrated with a power supply interface; the digital component module is connected with the radio frequency component module through a micro rectangular connector; the radio frequency component module is integrated with a radio frequency interface for connecting an antenna end; the radio frequency component module is used for converting a first radio frequency signal into a first intermediate frequency signal and then transmitting the first intermediate frequency signal to the digital component module through a first connecting cable; the digital component module is used for converting the first intermediate frequency signal into a first optical signal and then transmitting the first optical signal out through an optical interface; the digital component module is also used for acquiring a second optical signal through the optical interface, converting the second optical signal into a second intermediate frequency signal and then transmitting the second intermediate frequency signal to the radio frequency component module through a second connecting cable; and the radio frequency interface is used for converting the second intermediate frequency signal into a second radio frequency signal and then transmitting the second radio frequency signal to the antenna end through the radio frequency interface. The application has the advantages of high integration and multifunction.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a multifunctional integrated active channel and radar test component. Background Technology

[0002] The active channels used in existing digital array radar testing lack high integration and multifunctionality. They are typically composed of several separate active modules, including individual RF transceiver channels, up-conversion and down-conversion channels, digital processing channels, and photoelectric conversion modules. Connecting these individual modules to form an active channel is cumbersome, involves numerous cables, and increases costs due to the large number of modules. Summary of the Invention

[0003] This invention provides a multifunctional integrated active channel and radar test component to solve the problem of low integration of active channels in the prior art.

[0004] According to an embodiment of the present invention, a multifunctional integrated active channel includes: a radio frequency component module, a digital component module, a micro rectangular connector, a first connecting cable, and a second connecting cable;

[0005] The radio frequency component module and the digital component module are stacked together, and the micro rectangular connector, the first connecting cable, and the second connecting cable are all used to connect the radio frequency component module and the digital component module.

[0006] The digital component module integrates a power interface for external power supply, which supplies power to the radio frequency component module through the digital component module and the micro rectangular connector.

[0007] The radio frequency component module integrates a radio frequency interface, which is used to connect to the antenna end. The radio frequency component module is used to obtain a first radio frequency signal from the antenna end, convert the first radio frequency signal to a first intermediate frequency signal, and then transmit it to the digital component module through the first connecting cable.

[0008] The digital component module integrates an optical interface, and the digital component module is used to convert the first intermediate frequency signal into a first optical signal and transmit it out through the optical interface;

[0009] The digital component module is also used to acquire a second optical signal through the optical interface, convert the second optical signal into a second intermediate frequency signal, and then transmit it to the radio frequency component module through the second connecting cable;

[0010] The radio frequency interface is also used to convert the second intermediate frequency signal into a second radio frequency signal and then transmit it to the antenna end through the radio frequency interface.

[0011] According to some embodiments of the present invention, the radio frequency component module has a first groove, the digital component module has a second groove, and the second groove and the first groove are configured to form a rectangular groove;

[0012] The micro rectangular connector, the first connecting cable, and the second connecting cable are all located at the rectangular groove;

[0013] The multi-functional integrated active channel also includes a cover plate adapted to be fitted into the rectangular slot to shield the micro-rectangular connector, the first connecting cable, and the second connecting cable.

[0014] According to some embodiments of the present invention, the radio frequency component module is packaged using a micro-assembly process based on MMIC.

[0015] According to some embodiments of the present invention, the radio frequency component module integrates a split-cavity transceiver amplifier circuit and an up / down conversion circuit;

[0016] The transceiver amplifier circuit integrates a receiving circuit, a transmitting circuit, a switch, and an RF amplification and filtering component. One end of the receiving circuit and one end of the transmitting circuit are both connected to the RF interface. The other end of the receiving circuit and the other end of the transmitting circuit are both connected to the switch for unified control. The switch is connected to the input end of the RF amplification and filtering component, and the output end of the RF amplification and filtering component is connected to the up-conversion and down-conversion circuit. The up-conversion and down-conversion circuit is connected to the first connecting cable and the second connecting cable.

[0017] According to some embodiments of the present invention, the up-conversion circuit integrates two-stage frequency conversion circuits and two local oscillator interfaces. The input terminals of the two-stage frequency conversion circuits are communicatively connected to the radio frequency amplification and filtering component. The two local oscillator interfaces are used to connect the local oscillator to the two-stage frequency conversion circuits to achieve two-stage frequency conversion.

[0018] According to some embodiments of the present invention, the digital component module is implemented based on a PCB substrate and surface mount technology for packaging devices.

[0019] According to some embodiments of the present invention, the digital component module integrates an AD and DA conversion circuit, a digital filtering and extraction circuit, and a photoelectric conversion circuit that are sequentially connected in communication. The AD and DA conversion circuit is communicatively connected to the first connecting cable and the second connecting cable, and the photoelectric conversion circuit is communicatively connected to the optical interface.

[0020] According to some embodiments of the present invention, the AD and DA conversion circuits include an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, a clock interface, an FPGA circuit, and an FPGA debugging external interface.

[0021] The radar test assembly according to an embodiment of the present invention includes a multi-functional integrated active channel as described above.

[0022] By employing the embodiments of the present invention, the channel integrates radio frequency, frequency conversion, signal conversion and other functional circuits into one, forming a complete active channel, which has the advantages of high integration and multiple functions.

[0023] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. In the drawings:

[0025] Figure 1 This is a schematic diagram of a multifunctional integrated active channel structure in an embodiment of the present invention. Detailed Implementation

[0026] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art. Furthermore, in some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0027] like Figure 1 As shown, the multifunctional integrated active channel of this invention includes: a radio frequency component module 1, a digital component module 2, a micro rectangular connector 3, a first connecting cable 4, and a second connecting cable 5.

[0028] The radio frequency component module 1 and the digital component module 2 are stacked one on top of the other. The micro rectangular connector 3, the first connecting cable 4, and the second connecting cable 5 are all used to connect the radio frequency component module 1 and the digital component module 2.

[0029] Digital component module 2 integrates a power interface 6 for external power supply. The external power supply powers digital component module 2 through power interface 6. Simultaneously, the external power supply powers radio frequency component module 1 through digital component module 2 and micro rectangular connector 3. It can be understood that digital component module 2 powers radio frequency component module 1 through micro rectangular connector 3.

[0030] The radio frequency (RF) module 1 integrates an RF interface 7, which is used to connect to the antenna. The RF module 1 is used to obtain a first RF signal from the antenna and convert the first RF signal to a first intermediate frequency signal before transmitting it to the digital module 2 through the first connecting cable 4.

[0031] The digital component module 2 integrates an optical interface 8, which is used to convert the first intermediate frequency signal into a first optical signal and transmit it through the optical interface 8.

[0032] The digital component module 2 is also used to acquire a second optical signal through the optical interface 8, convert the second optical signal into a second intermediate frequency signal, and then transmit it to the radio frequency component module 1 through the second connecting cable 5.

[0033] The radio frequency interface 7 is also used to convert the second intermediate frequency signal into a second radio frequency signal and then transmit it to the antenna end through the radio frequency interface 7.

[0034] The active channels currently used in the project have modules connected by cables, and their power supply and control are also independent. On the one hand, this brings additional power supply and control requirements to the project, increasing the workload and system complexity, and on the other hand, it also increases the system cost.

[0035] By employing the embodiments of the present invention, the channel integrates radio frequency, frequency conversion, signal conversion and other functional circuits into one, forming a complete active channel. It has the advantages of high integration and multiple functions, reducing the complexity of system connection and also reducing costs.

[0036] Based on the above embodiments, further variant embodiments are proposed. It should be noted that, in order to keep the description brief, only the differences from the above embodiments are described in each variant embodiment.

[0037] like Figure 1 As shown, according to some embodiments of the present invention, the radio frequency component module 1 has a first groove, and the digital component module 2 has a second groove, the second groove and the first groove forming a rectangular groove 9;

[0038] The micro rectangular connector 3, the first connecting cable 4, and the second connecting cable 5 are all located at the rectangular groove 9;

[0039] The multi-functional integrated active channel also includes a cover plate (not shown in the figure), which is adapted to be fitted into the rectangular slot 9 to shield the micro-rectangular connector 3, the first connecting cable 4, and the second connecting cable 5. For example, the slot cover plate is fixed with screws in the slot to achieve interconnection between the upper and lower modules and realize cableless connection to the outside.

[0040] Therefore, cables can be hidden by cover plates, which can protect the cables and improve the overall structural integrity.

[0041] The RF module and digital module are detachably connected within a rectangular groove, allowing for individual testing and detection of the RF and digital modules in case of a fault, thus enabling precise fault location.

[0042] According to some embodiments of the present invention, the radio frequency component module 1 is based on MMIC and adopts micro-assembly technology to realize the transmission and reception of radio frequency signals and frequency conversion to intermediate frequency. The entire module adopts a hermetically sealed design.

[0043] According to some embodiments of the present invention, the internal structural components of the radio frequency component module 1 are assembled by means of conductive adhesive bonding.

[0044] According to some embodiments of the present invention, the radio frequency component module 1 integrates a split-cavity transceiver amplifier circuit and a frequency up / down converter circuit. This physically isolates signals in different frequency bands, minimizing interference between radio frequency signals.

[0045] The transceiver circuit integrates a receiving circuit, a transmitting circuit, a switch, and an RF amplification and filtering component. One end of the receiving circuit and one end of the transmitting circuit are both connected to the RF interface 7 for communication. The other ends of the receiving circuit and the transmitting circuit are both connected to the switch for unified control. The switch can selectively connect either the receiving circuit to the RF amplification and filtering component, or the transmitting circuit to the RF amplification and filtering component.

[0046] The switch is connected to the input of the RF amplifier and filter component, the output of the RF amplifier and filter component is connected to the up and down frequency conversion circuit, and the up and down frequency conversion circuit is connected to the first connecting cable 4 and the second connecting cable 5.

[0047] The receiving and transmitting circuits share the same RF amplification and filtering components, which are switched via a switch, saving on the number of components, saving space, and improving the integration of RF module 1. The RF signal has a high bandwidth; the RF filter bank in the RF amplification and filtering components performs segmented filtering of the RF signal, ensuring that the output signal meets spurious emission requirements.

[0048] For example, the radio frequency module 1 uses a single-pole triple-throw switch and filter bank to switch frequency bands, which suppresses spurious signals while widening the operating bandwidth.

[0049] According to some embodiments of the present invention, the up-conversion circuit integrates two-stage frequency conversion circuits and two local oscillator interfaces 10. The input terminals of the two-stage frequency conversion circuits are communicatively connected to the radio frequency amplification and filtering components. The two local oscillator interfaces 10 are used to connect the local oscillator to the two-stage frequency conversion circuits to achieve two-stage frequency conversion.

[0050] The up-conversion circuit uses two-stage frequency conversion, and through frequency and reasonable planning, it achieves the high spurious output requirement of the signal.

[0051] According to some embodiments of the present invention, the digital component module is based on a PCB substrate and surface mount technology for packaging devices to realize the generation and reception of intermediate frequency signals, and finally generates optical signals through photoelectric conversion.

[0052] According to some embodiments of the present invention, the digital component module 2 integrates an AD and DA conversion circuit, a digital filtering and extraction circuit, and a photoelectric conversion circuit that are sequentially connected in communication. The AD and DA conversion circuit is connected in communication with the first connecting cable 4 and the second connecting cable 5, and the photoelectric conversion circuit is connected in communication with the optical interface 8.

[0053] The intermediate frequency signal from the radio frequency component module 1 is converted into a digital signal by the AD and DA conversion circuits. After being processed by the digital filtering and decimation circuit through downconversion, filtering, and decimation, it is then converted into an optical signal output by the photoelectric conversion circuit.

[0054] According to some embodiments of the present invention, the AD and DA conversion circuits include an analog-to-digital converter circuit, a digital-to-analog converter circuit, two clock interfaces 11, an FPGA circuit, and an FPGA debugging interface 12. The two clock interfaces 11 are used to provide reference clocks for the analog-to-digital converter circuit and the digital-to-analog converter circuit, respectively. The FPGA circuit is used to cooperate with the analog-to-digital converter circuit and the digital-to-analog converter circuit.

[0055] According to some embodiments of the present invention, the multifunctional integrated active channel is further provided with an antenna calibration control switch 13 for controlling the calibration path in calibration mode.

[0056] The radar test assembly according to an embodiment of the present invention includes a multi-functional integrated active channel as described above.

[0057] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0058] The contents not described in detail in this specification are common knowledge to those skilled in the art.

[0059] The terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] Any reference signs enclosed in parentheses should not be construed as limiting the claims. The word "a" or "an" preceding an element does not exclude the existence of a plurality of such elements. The use of the words first, second, and third, etc., is to distinguish similar objects and does not indicate any order. These words may be interpreted as names.

[0061] "AND / OR" describes the relationship between related objects, indicating that there can be three relationships. For example, A AND / OR B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the objects before and after it are in an "OR" relationship.

Claims

1. A multi-function integrated active channel, characterized by, include: Radio frequency component module, digital component module, micro rectangular connector, first connecting cable, second connecting cable; The radio frequency component module and the digital component module are stacked together, and the micro rectangular connector, the first connecting cable, and the second connecting cable are all used to connect the radio frequency component module and the digital component module. The digital component module integrates a power interface for external power supply, which supplies power to the radio frequency component module through the digital component module and the micro rectangular connector. The radio frequency component module integrates a radio frequency interface, which is used to connect to the antenna end. The radio frequency component module is used to obtain a first radio frequency signal from the antenna end, convert the first radio frequency signal to a first intermediate frequency signal, and then transmit it to the digital component module through the first connecting cable. The digital component module integrates an optical interface, and the digital component module is used to convert the first intermediate frequency signal into a first optical signal and transmit it out through the optical interface; The digital component module is also used to acquire a second optical signal through the optical interface, convert the second optical signal into a second intermediate frequency signal, and then transmit it to the radio frequency component module through the second connecting cable; The radio frequency interface is also used to convert the second intermediate frequency signal into a second radio frequency signal and then transmit it to the antenna end through the radio frequency interface.

2. The multi-functional integrated active channel of claim 1, wherein, The radio frequency component module has a first groove, and the digital component module has a second groove, the second groove and the first groove forming a rectangular groove; The micro rectangular connector, the first connecting cable, and the second connecting cable are all located at the rectangular groove; The multi-functional integrated active channel also includes a cover plate adapted to be fitted into the rectangular slot to shield the micro-rectangular connector, the first connecting cable, and the second connecting cable.

3. The multi-functional integrated active channel of claim 1, wherein, The radio frequency component module is packaged using a micro-assembly process based on MMIC.

4. The multi-functional integrated active channel of claim 3, wherein, The radio frequency module integrates a transceiver amplifier circuit with a split-cavity design and an up / down conversion circuit. The transceiver amplifier circuit integrates a receiving circuit, a transmitting circuit, a switch, and an RF amplification and filtering component. One end of the receiving circuit and one end of the transmitting circuit are both connected to the RF interface. The other end of the receiving circuit and the other end of the transmitting circuit are both connected to the switch for unified control. The switch is connected to the input end of the RF amplification and filtering component, and the output end of the RF amplification and filtering component is connected to the up-conversion and down-conversion circuit. The up-conversion and down-conversion circuit is connected to the first connecting cable and the second connecting cable.

5. The multi-functional integrated active channel of claim 4, wherein, The up-conversion circuit integrates two-stage frequency conversion circuits and two local oscillator interfaces. The input terminals of the two-stage frequency conversion circuits are communicatively connected to the radio frequency amplification and filtering component. The two local oscillator interfaces are used to connect the local oscillator to the two-stage frequency conversion circuits to achieve two-stage frequency conversion.

6. The multi-functional integrated active channel of claim 1, wherein, The digital component module is implemented based on PCB substrate and surface mount technology for packaging devices.

7. The multi-functional integrated active channel of claim 6, wherein, The digital component module is integrated with AD and DA conversion circuit, digital filter extraction circuit and photoelectric conversion circuit which are communicated in sequence, the AD and DA conversion circuit is communicated with the first connecting cable and the second connecting cable, and the photoelectric conversion circuit is communicated with the optical interface.

8. The multi-functional integrated active channel of claim 7, wherein, The AD and DA conversion circuit comprises analog-digital conversion circuit, digital-analog conversion circuit, clock interface, FPGA circuit and FPGA debugging external interface.

9. A radar test assembly characterized by, A multifunctional integrated active channel comprising a digital component module according to any one of claims 1-8.

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