A high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna

Abstract

The application discloses a high-integration circularly polarized reconfigurable reconnaissance and jamming integrated phased array antenna, and realizes compatible functions of same-frequency-band radars, communications, electronic reconnaissance and electronic jamming through circularly polarized reconfigurable design, radio frequency channel compatibility design and transceiving quick switching design, and realizes low-cost high-integration phased array antenna design through multi-layer high-frequency mixed-pressing printed board technology and high-integration design of vertical interconnection.

Description

TECHNICAL FIELD

[0001] The application relates to the field of active phased array antennas, and can be used in the fields of communication, radar, electronic countermeasures, and specifically relates to a high-integration circularly polarized reconfigurable reconnaissance and jamming detection and penetration integrated phased array antenna. BACKGROUND

[0002] With the continuous updating of equipment, in order to adapt to the requirements of modern war on the comprehensive performance of equipment, the equipment is continuously developing towards multifunctional and integrated design. In the fields of radar, communication, electronic reconnaissance and electronic jamming, the requirement of radio frequency integration design is becoming more and more urgent. If the functions of radar, communication, electronic reconnaissance and electronic jamming can be realized through the reuse of the same antenna array, the cost of equipment can be effectively reduced, the number of antenna ports can be reduced, and the combat effectiveness of equipment can be expanded.

[0003] For the active phased array antenna which has been widely used in the fields of radar, communication, electronic reconnaissance and electronic jamming, the design difficulty of radio frequency integration is that the antenna and the radio frequency channel need to consider the different performance requirements of radar, communication, electronic reconnaissance and electronic jamming. For example, communication usually uses circularly polarized antennas to improve communication stability, and electronic reconnaissance and electronic jamming can also use circularly polarized antennas to reduce the polarization mismatch of target radiation source signals and improve the interception probability, while circularly polarized radars cannot receive due to the polarization reverse rotation of target echoes. At the same time, as the active phased array antenna has the highest cost proportion and larger size and weight in radar, communication, electronic reconnaissance and electronic jamming equipment, it is also very important to miniaturize and design at low cost.

[0004] In view of the problems that the traditional phased array antenna does not have the capability of being compatible with radar, communication, electronic reconnaissance and electronic jamming, and the high cost and low integration caused by the common micro-assembly process, the application specifically proposes a high-integration circularly polarized reconfigurable reconnaissance and jamming detection and penetration integrated phased array antenna, which realizes multifunction reuse through radio frequency transceiver channel reuse and antenna circularly polarized reconfiguration, and realizes low-cost and high-integration design in combination with a multilayer high-frequency mixed pressure printed board process. SUMMARY

[0005] The application proposes a high-integration circularly polarized reconfigurable reconnaissance and jamming detection and penetration integrated phased array antenna, which can realize the functional expansion of the active phased array antenna at a lower cost and size, and can have the transceiving function of being compatible with radar, communication, electronic reconnaissance and electronic jamming in the same frequency band.

[0006] The technical solutions of the application are as follows: a high-integration circularly polarized reconfigurable reconnaissance and jamming integrated phased array antenna adopts a transceiving sharing system, and has an array size of M rows by N columns, the phased array antenna comprises a radome, a transceiving antenna array surface, a comprehensive function circuit board, a cold plate, a bottom plate, a liquid supply connector, an external electrical connector, and a blind insertion connector, the comprehensive function circuit board adopts a multilayer high-frequency mixed pressure printed board process, the comprehensive function circuit board is separated from the transceiving antenna array surface by the cold plate and dissipates heat through the cold plate, signal interconnection is realized through the blind insertion connector, the bottom surface of the comprehensive function circuit board is arranged on the bottom plate, the bottom plate is provided with the external electrical connector, and the transceiving antenna array surface is provided with the radome for protection.

[0007] The application realizes the compatible functions of the same frequency band radar, communication, electronic reconnaissance and electronic jamming through the circularly polarized reconfigurable design of the antenna, the radio frequency channel compatibility design and the transceiving fast switching design, realizes the low-cost high-integration phased array antenna design through the multilayer high-frequency mixed pressure printed board process and the high-integration design of vertical interconnection.

[0008] Compared with the prior art, the application has the following advantages:

[0009] The multilayer high-frequency mixed pressure printed board process with lower cost is adopted instead of the micro assembly process with higher cost, so that the hardware cost can be significantly reduced, meanwhile, the multilayer high-frequency mixed pressure printed board process has larger wiring space and higher wiring freedom, which is more conducive to improving the circuit integration; the vertical interconnection design of each module in the structural layout can effectively utilize the space utilization and improve the equipment integration; the wideband design is adopted in the radio frequency channel design, including a multistage strip line power divider, which can not only adapt to the requirements of radar and communication on narrowband signal quality, but also adapt to the requirements of electronic reconnaissance and electronic jamming on wideband signal reception and transmission; the circularly polarized reconfigurable and transceiving sharing design of the antenna can adjust the transceiving polarization according to the polarization mode of the communication object, and can also switch the polarization rotation direction between the pulse radar transceiving interval, and the circularly polarized antenna has smaller polarization mismatch than the linearly polarized antenna in some cases of electronic reconnaissance and electronic jamming application. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The figure is a structural layout schematic diagram of the application.

[0011] Figure 2 The figure is a printed board stack schematic diagram of the application.

[0012] Figure 3a The figure is an antenna layer layout schematic diagram of the application.

[0013] Figure 3b The figure is a feed circuit layer layout schematic diagram of the application.

[0014] Figure 3c The figure is a transceiving circuit layer layout schematic diagram of the application.

[0015] Figure 4 The polar switch module circuit principle block diagram of the present application.

[0016] Figure 5 The transceiver circuit module circuit principle block diagram of the present application. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0018] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0019] In addition, the description such as “first”, “second” and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “plurality” is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0020] In the present application, unless otherwise explicitly specified and limited, the terms “connection”, “fixing” and the like should be understood in a broad sense, for example, “fixing” can be fixed connection, or detachable connection, or integral; “connection” can be mechanical connection, or electrical connection. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0022] The specific embodiments, technical difficulties and points of the present application will be further introduced below in combination with the design examples.

[0023] The high-integration circularly polarized reconfigurable reconnaissance and detection integrated phased array antenna transceiver shares an array size of M rows by N columns.

[0024] The phased array antenna has a transceiving same-rotation mode, that is, the transmission signal and the reception signal are both left-handed circular polarization or both right-handed circular polarization; the phased array antenna has a transceiving opposite-rotation mode, that is, the transmission signal and the reception signal are both circular polarization but the rotation directions are opposite, for example, the transmission signal is right-handed circular polarization and the reception signal is left-handed circular polarization, or the transmission signal is left-handed circular polarization and the reception signal is right-handed circular polarization.

[0025] The phased array antenna can work in an electronic reconnaissance mode, an electronic jamming mode, an active detection mode and a bidirectional communication mode.

[0026] In combination Figure 1 , the phased array antenna comprises a radome, a transceiving antenna array surface, a comprehensive function circuit board, a cold plate, a bottom plate, a liquid supply connector, an external electrical connector, a blind insertion connector, the bottom surface of the comprehensive function circuit board is arranged on the bottom plate, and the top surface is connected with the bottom surface of the cold plate. The bottom plate is provided with the external electrical connector, the cold plate is provided with the liquid supply connector and the blind insertion connector, the transceiving antenna array surface is arranged on the top surface of the cold plate, and the radome is arranged on the transceiving antenna array surface for protection.

[0027] The transceiving antenna array surface comprises M rows by N columns of transceiving antenna units (for example, double-feed circularly polarized antenna units), the transceiving antenna units adopt double-feed circularly polarized antennas, left-handed / right-handed circular polarization switching is realized by adjusting the phase lead / lag of 2 feed points by 90°, and every 4 two-by-two adjacent transceiving antenna units can also improve the circular polarization axial ratio of the phased array antenna by rotating the feed.

[0028] In combination Figure 2 , the comprehensive function circuit board is a 12-layer high-frequency mixed-pressure printed board laminated by 4 layers of high-frequency double-sided copper-clad plates, 2 layers of ordinary double-sided copper-clad plates, 3 pieces of high-frequency semi-cured sheets and 2 pieces of ordinary semi-cured sheets, 1-12 layers of vias, 1-6 layers of first blind holes and 7-12 layers of second blind holes are used, the process flow is simple, and the material and manufacturing costs are relatively low.

[0029] The comprehensive function circuit board adopts a 12-layer high-frequency mixed-pressure printed board, which comprises, from top to bottom, a first layer: a feed circuit layer, a second layer: a feed ground layer, a third layer: a reception combining network layer, a fourth layer: a reception power division ground layer, a fifth layer: a transmission power division network layer, a sixth layer: a transmission power division ground layer, a seventh layer: a digital isolation ground layer, an eighth layer: a digital circuit layer, a ninth layer: a power supply isolation ground layer, a tenth layer: a power supply circuit layer, an eleventh layer: a transceiving ground layer and a twelfth layer: a transceiving circuit layer.

[0030] In combination Figure 3a , Figure 3b andFigure 3c The first layer of the integrated functional circuit board is connected to the array of transceiving antennas through blind plug connectors, and is separated from the array of transceiving antennas by a cold plate to provide heat dissipation. The first layer mainly includes M rows and N columns of polarization switching modules. Each polarization switching module has two antenna feed ports, F1 and F2, which are directly connected to the two feed ports of the corresponding transceiving antenna unit through blind plug connectors. Each polarization switching module has two circuit ports, D1 and D2. The D1 port is a transmitting feed port, and the D2 port is a receiving feed port. The two circuit ports (D1 and D2) and the two antenna feed ports (F1 and F2) are switched by the polarization switching module to realize the input and output of transceiving signals.

[0031] The second layer of the integrated functional circuit board is a complete ground plane, which provides a reference ground for the microstrip lines of the first layer of the feed circuit layer, provides an upper reference ground for the striplines of the third layer of the receiving combining network layer, and shields the interference signals in the inner layers of the integrated functional circuit board.

[0032] The third layer of the integrated functional circuit board is a receiving combining network layer, which is a combining network of receiving signals. The striplines are connected in a T shape and combined, for example, a typical combining topology is 16 combined 8-8 combined 4-4 combined 2-2 combined 1. Each branch port comes from the receiving feed port of the transceiving circuit module in the twelfth layer of the transceiving circuit layer in the integrated functional circuit board, and the common port is connected to the receiving common end in the twelfth layer of the transceiving circuit layer in the integrated functional circuit board through a via hole.

[0033] The fourth layer of the integrated functional circuit board is a receiving power dividing ground layer, which is a complete ground plane. It provides a lower reference ground for the striplines of the third layer of the receiving combining network layer, and provides an upper reference ground for the fifth layer of the transmitting power dividing network layer.

[0034] The fifth layer of the integrated functional circuit board is a transmitting power dividing network layer, which is a power dividing network of transmitting excitation signals. The striplines are connected in a T shape and combined, for example, a typical branch topology is 1 divided by 2-2 divided by 4-4 divided by 8-8 divided by 16. Each branch port comes from the transmitting feed port of the transceiving circuit module in the twelfth layer of the transceiving circuit layer in the integrated functional circuit board, and the common port is connected to the transmitting common end in the twelfth layer of the transceiving circuit layer in the integrated functional circuit board through a via hole.

[0035] The sixth layer of the integrated functional circuit board is a transmitting power dividing ground layer, which is a complete ground plane. It provides a lower reference ground for the striplines of the fifth layer of the transmitting power dividing network layer.

[0036] The seventh layer of the integrated functional circuit board is a digital isolation ground layer, which is a complete ground plane. It is used to shield the interference caused by the digital signal traces in the eighth layer of the digital circuit layer.

[0037] The 8th digital circuit layer in the integrated functional circuit board is used for control signal wiring, and is connected with the corresponding device control pins of the 1st feeding circuit layer and the 12th transceiving circuit layer through the second blind hole and via.

[0038] The 10th power supply circuit layer in the integrated functional circuit board is used for power supply wiring, and is connected with the corresponding device power supply pins of the 1st feeding circuit layer and the 12th transceiving circuit layer through the second blind hole and via.

[0039] The 11th transceiving circuit ground layer in the integrated functional circuit board is a complete ground plane, and provides a reference ground for the microstrip line of the 12th transceiving circuit layer.

[0040] In combination Figure 5 , the 12th transceiving circuit layer in the integrated functional circuit board integrates the main functional circuit of the phased array antenna, including M rows × N columns of transceiving circuit modules, one power supply circuit module, one beam control module, one power supply connector, one control connector, one transmitting common end and one receiving common end. The transceiving circuit module is used for phase-shifting, power amplifying and filtering processing of a transmitting excitation signal, or filtering, low-noise amplifying and phase-shifting processing of a receiving signal; the power supply circuit module is used for converting an input high-voltage power supply into a low-voltage direct current required by each device of the integrated functional circuit board, and performing power filtering processing on the input power supply; the beam control module is composed of a control unit such as FPGA and MCU, a storage unit such as Flash and EEPROM and a corresponding peripheral circuit, and is used for storage and delivery of a beam control code, and control, switching and health management of a whole machine working state; the power supply connector is used for interconnection with an external power supply input; the control connector is used for interaction with an external control; the transmitting common end is used for connection with an external radio frequency signal source; and the receiving common end is used for connection with an external digital receiver.

[0041] In combination Figure 4 , the polarization switching module of the phased array antenna feeding circuit layer includes one Lange bridge, two circulators, two double-pole double-throw switches, two single-pole single-throw switches, two narrowband filters and two wideband filters.

[0042] The single-pole single-throw switch has three ports, in which port 3 is a common end, and ports 1 and 2 are gating ends. In the single-pole single-throw switch, 3-1 or 3-2 can be gated.

[0043] The double-pole double-throw switch has four ports, and in the double-pole double-throw switch, 1-4+2-3 or 1-3+2-4 can be gated.

[0044] The circulator has three ports, wherein port 1 is a common port, port 2 is a receiving port, and port 3 is a transmitting port, and in the circulator, 3→1 and 1→2 are conductive, and 3→2 is isolated.

[0045] The Lange bridge has four ports, wherein port 1 is a common port, port 4 is an isolated port, port 2 is a straight-through port, and port 3 is a coupled port, and the transmitting signal of port 1 is divided into two paths through the Lange bridge, and is output through port 2 and port 3, wherein the output signal of port 3 lags behind the output signal of port 2 by 90°, and no signal is output through port 4.

[0046] When transmitting a signal, the transmitting excitation signal is input from the D1 port of a certain transceiver module in the transceiver circuit layer to the corresponding polarization switching module, and is switched by the first single-pole double-throw switch to select the first wideband filter or the first narrowband filter, port 1 of the first single-pole single-throw switch corresponds to the first wideband filter, port 2 of the first single-pole single-throw switch corresponds to the first narrowband filter, the output end of the first wideband filter is connected to port 4 of the first double-pole double-throw switch, the output end of the first narrowband filter is connected to port 3 of the first double-pole double-throw switch, port 1 of the first double-pole double-throw switch is connected to port 3 of the first circulator, port 2 of the first double-pole double-throw switch is connected to port 3 of the second circulator, port 1 of the first circulator is connected to port 1 of the Lange bridge, port 2 of the Lange bridge is connected to the F2 port of the transceiver antenna unit, and port 3 of the Lange bridge is connected to the F1 port of the transceiver antenna unit.

[0047] When receiving a signal, the receiving signal enters port 2 and port 3 of the Lange bridge through the F2 port and the F1 port of the transceiver antenna unit, respectively, if the receiving signal is a left-handed circularly polarized electromagnetic wave, the F1 port signal lags behind the F2 by 90°, and the output signal of the Lange bridge port 1 is transmitted to port 1 of the second double-pole double-throw switch through the 1→2 transmission path of the first circulator, and is output through port 3 or port 4 of the second double-pole double-throw switch after switching, if the output is through port 4 and the second single-pole double-throw switch is switched to 3-1 conduction, the receiving signal is input to the receiving circuit at the back end through the second wideband filter, if the output is through port 3 and the second single-pole double-throw switch is switched to 3-2 conduction, the receiving signal is input to the receiving circuit at the back end through the second narrowband filter.

[0048] If the received signal is right-hand circularly polarized electromagnetic wave, the F2 port signal lags behind the F1 by 90°, the Lange bridge port 4 output signal enters the second circulator 1→2 transmission path, and then enters the second double-pole double-throw switch port 2. After switch gating, the signal is output through the second double-pole double-throw switch port 3 or port 4. If it is output through port 4 and the second single-pole double-throw switch is switched to 3-1 conduction, the received signal enters the back-end receiving circuit through the second wideband filter. If it is output through port 3 and the second single-pole double-throw switch is switched to 3-2 conduction, the received signal enters the back-end receiving circuit through the second narrowband filter.

[0049] When the first single-pole single-throw switch of the polarization switching module is switched to 3-1 conduction and the first double-pole double-throw switch is switched to 1-4+2-3 conduction, the transmitted signal enters the first wideband filter through the first single-pole single-throw switch port 1, and then enters the first circulator port 3 through the conduction path of the double-pole double-throw switch 4-1. The signal enters the Lange bridge port 1 through the conduction path of 3→1, and the power is divided into two paths from ports 2 and 3 into the transceiving antenna unit ports F2 and F1, respectively. At this time, the signal of the input port F1 lags behind the F2 by 90°, forming a left-hand circularly polarized wideband transmission.

[0050] When the first single-pole single-throw switch of the polarization switching module is switched to 3-1 conduction and the first double-pole double-throw switch is switched to 1-4+2-3 conduction, the transmitted signal enters the first wideband filter through the first single-pole single-throw switch port 1, and then enters the first circulator port 3 through the conduction path of the double-pole double-throw switch 4-1. The signal enters the Lange bridge port 1 through the conduction path of 3→1, and the power is divided into two paths from ports 2 and 3 into the transceiving antenna unit ports F2 and F1, respectively. At this time, the signal of the input port F1 lags behind the F2 by 90°, forming a left-hand circularly polarized wideband transmission.

[0051] When the first single-pole single-throw switch of the polarization switching module is switched to 3-1 conduction and the first double-pole double-throw switch is switched to 1-4+2-3 conduction, the transmitted signal enters the first wideband filter through the first single-pole single-throw switch port 1, and then enters the first circulator port 3 through the conduction path of the double-pole double-throw switch 4-1. The signal enters the Lange bridge port 1 through the conduction path of 3→1, and the power is divided into two paths from ports 2 and 3 into the transceiving antenna unit ports F2 and F1, respectively. At this time, the signal of the input port F1 lags behind the F2 by 90°, forming a left-hand circularly polarized wideband transmission.

[0052] When the polarization switching module switches to 3-2 on of the first single-pole single-throw switch and 1-4+2-3 on of the first double-pole double-throw switch, the transmitting signal is input into the first narrowband filter through port 1 of the first single-pole single-throw switch, and then input into port 3 of the second circulator through the on path of the double-pole double-throw switch 3-2, and input into port 4 of the Lange bridge through the on path of 3→1, and the power division 2 paths are respectively input into ports F2 and F1 of the transceiving antenna unit from ports 2 and 3, at this time, the signal input into port F2 lags behind the signal input into port F1 by 90°, forming right-hand circularly polarized narrowband transmission.

[0053] When the transceiving antenna unit receives left-hand circularly polarized electromagnetic waves, the second double-pole double-throw switch of the polarization switching module switches to 1-4+2-3 on, and the second single-pole single-throw switch switches to 3-1 on, the receiving signal of the transceiving antenna is input from ports F1 and F2, and then input into port 3 and 2 of the Lange bridge, and the combined signal is input into port 1 of the first circulator from port 1 of the Lange bridge, and then input into port 1 of the second double-pole double-throw switch through the on path of 1→2, and input into the second wideband filter through the on path of 1-4, and then input into the receiving circuit at the rear end through the on path of 1-3 of the second single-pole double-throw switch, forming left-hand circularly polarized wideband reception.

[0054] When the transceiving antenna unit receives left-hand circularly polarized electromagnetic waves, the second double-pole double-throw switch of the polarization switching module switches to 1-3+2-4 on, and the second single-pole single-throw switch switches to 2-1 on, the receiving signal of the transceiving antenna is input from ports F1 and F2, and then input into port 3 and 2 of the Lange bridge, and the combined signal is input into port 1 of the first circulator from port 1 of the Lange bridge, and then input into port 1 of the second double-pole double-throw switch through the on path of 1→2, and input into the second narrowband filter through the on path of 1-3, and then input into the receiving circuit at the rear end through the on path of 2-3 of the second single-pole double-throw switch, forming left-hand circularly polarized narrowband reception.

[0055] When the transceiving antenna unit receives right-hand circularly polarized electromagnetic wave, the second double-pole double-throw switch of the polarization switching module switches to 1-4+2-3 conduction, the second single-pole single-throw switch switches to 3-2 conduction, the receiving signal of the transceiving antenna is input from ports F1, F2 through ports 3, 2 of the Lange bridge, the signal of port 2 lags behind port 3 by 90°, the combined signal is input from port 4 of the Lange bridge to port 1 of the second circulator, is input to port 2 of the second double-pole double-throw switch through the conduction path of 1→2, is input to the second narrowband filter through the conduction path of 2-3, and enters the receiving circuit at the rear end through the conduction path of 2-3 of the second single-pole double-throw switch, thereby forming right-hand circularly polarized narrowband reception.

[0056] When the transceiving antenna unit receives right-hand circularly polarized electromagnetic wave, the second double-pole double-throw switch of the polarization switching module switches to 1-4+2-3 conduction, the second single-pole single-throw switch switches to 3-2 conduction, the receiving signal of the transceiving antenna is input from ports F1, F2 through ports 3, 2 of the Lange bridge, the signal of port 2 lags behind port 3 by 90°, the combined signal is input from port 4 of the Lange bridge to port 1 of the second circulator, is input to port 2 of the second double-pole double-throw switch through the conduction path of 1→2, is input to the second narrowband filter through the conduction path of 2-3, and enters the receiving circuit at the rear end through the conduction path of 2-3 of the second single-pole double-throw switch, thereby forming right-hand circularly polarized narrowband reception.

[0057] The transceiving circuit module of the phased array antenna transceiving circuit layer comprises three drive amplifiers, two digital control attenuators, two digital control phase shifters, one power amplifier and one low-noise amplifier. When a signal is transmitted, the transmission excitation signal is input into the transmission channel through port F T , is amplified by the first drive amplifier, is subjected to amplitude and phase control of the first digital control attenuator and the first digital control phase shifter, enters the second drive amplifier, is fed into the port D1 of the polarization switching switch corresponding to the feeding circuit layer through the power amplifier, and enters the receiving circuit at the rear end through the conduction path of 1-3 of the second single-pole double-throw switch. When a signal is received, the port D1 of the polarization switching switch corresponding to the feeding circuit layer is connected to the port F

[0058] When the phased array antenna works in the electronic reconnaissance mode, the transceiving antenna array is set in the polarization state of receiving left-hand or receiving right-hand through the polarization switching module, the receiving channel is connected to the wideband filter, and left-hand or right-hand circularly polarized wideband reception is realized.

[0059] When the phased array antenna works in the electronic jamming mode, the transceiving antenna array is set in the polarization state of receiving left-hand+transmitting left-hand or receiving right-hand+transmitting right-hand through the polarization switching module, the transceiving channel is connected to the wideband filter, and left-hand circularly polarized wideband transmission and reception or right-hand circularly polarized wideband transmission and reception are realized.

[0060] When the phased array antenna works in the active detection mode, the transceiving antenna array is set in a left-handed circular polarization transmission + right-handed circular polarization reception or right-handed circular polarization transmission + left-handed circular polarization reception polarization state through the polarization switching module, and a transceiving channel is connected to the narrowband filter to realize left-handed circular polarization narrowband transmission and right-handed circular polarization narrowband reception or right-handed circular polarization narrowband transmission and left-handed circular polarization narrowband reception.

[0061] When the phased array antenna works in the bidirectional communication mode, according to different polarization requirements of the communication system, the transceiving antenna array is set in a left-handed circular polarization transmission + right-handed circular polarization reception, right-handed circular polarization transmission + left-handed circular polarization reception, left-handed circular polarization transmission + left-handed circular polarization reception or right-handed circular polarization transmission + right-handed circular polarization reception polarization state through the polarization switching module, and a transceiving channel is connected to the narrowband filter to realize left-handed circular polarization narrowband transmission and right-handed circular polarization narrowband reception, right-handed circular polarization narrowband transmission and left-handed circular polarization narrowband reception, left-handed circular polarization narrowband transmission and reception or right-handed circular polarization narrowband transmission and reception.

[0062] Preferably, the advantage of the present application is that all the circuits except the transceiving antenna array are integrated in the comprehensive function circuit board, the transceiving antenna array and the comprehensive function circuit board are divided by a cold plate, and a heat dissipation channel is provided for the main heat generating devices in the comprehensive function circuit board, so that the integration of the phased array antenna is effectively improved, and the structure is simplified and the cost is reduced.

[0063] Preferably, the advantage of the present application is that the transceiving antenna unit of the transceiving antenna array adopts a double-feed circular polarization antenna, the polarization switching module in the feed circuit layer is used to adjust the phase lead / lag of 90° of two feed point excitation signals to adjust the circular polarization rotation direction of the transceiving array, so that right-handed circular polarization transmission + left-handed circular polarization reception, right-handed circular polarization transmission + right-handed circular polarization reception, left-handed circular polarization transmission + right-handed circular polarization reception and left-handed circular polarization transmission + left-handed circular polarization reception can be realized.

[0064] Preferably, the advantage of the present application is that the polarization switching module can be used to select the narrowband filter to meet the requirements of narrow transceiving signal bandwidth, low signal spurious and high out-of-band suppression of the active detection function and the bidirectional communication function, and can be used to select the wideband filter to meet the requirements of wide frequency coverage of the transceiving signal of the electronic reconnaissance and electronic jamming.

[0065] Compared with the prior art, the application provides a phased array antenna design method which can adapt to the use requirements of electronic reconnaissance, electronic interference, active detection and two-way communication, can realize wideband circular polarization transmission and reception for electronic reconnaissance and electronic interference, can realize narrowband circular polarization transmission and orthogonal circular polarization reception for active detection, and can work in narrowband circular polarization transceiving or narrowband circular polarization transmission and orthogonal circular polarization reception according to different requirements of a communication system for two-way communication. The scheme integrates the antenna feed and polarization switching circuit, transceiving power dividing and combining network, radio frequency transceiving circuit, beam control circuit, power supply circuit and the like in one 12-layer high-frequency mixed-pressure printed board, greatly improves the integration of the phased array antenna, simplifies the structure composition and reduces the cost.

Claims

1. A high-integration circularly polarized reconfigurable reconnaissance and detection integrated phased array antenna, adopting a transceiver sharing system, with an array size of M rows by N columns, the phased array antenna comprising a radome, a transceiving antenna array surface, a comprehensive function circuit board, a cold plate, a bottom plate, a liquid supply connector, an external electrical connector, and a blind-mate connector, characterized in that, The comprehensive function circuit board adopts a multi-layer high-frequency mixed-pressing printed board process, the comprehensive function circuit board and the transceiving antenna array surface are separated by a cold plate and dissipate heat through the cold plate, signal interconnection is realized through a blind insertion connector, the bottom surface of the comprehensive function circuit board is arranged on a bottom plate, the bottom plate is provided with an external electrical connector, and the transceiving antenna array surface is provided with a radome for protection; The comprehensive function circuit board is divided into a feed circuit layer on an upper surface layer, a transceiving circuit layer on a lower surface layer, a power supply circuit layer in an inner layer, a digital circuit layer, a transmitting power dividing network layer, a receiving combining network layer, and a multi-layer reference ground layer and an isolation ground layer; The feed circuit layer is composed of MxN polarization switching modules, each polarization switching module is connected with a corresponding transceiving antenna unit through a blind insertion connector to realize left-handed or right-handed circular polarization transmission of a transmitting signal and left-handed or right-handed circular polarization reception of a receiving signal, and simultaneously realizes narrowband or wideband signal transmission and narrowband or wideband signal reception through switch gating of a corresponding filter; The polarization switching module in the feed circuit layer comprises a Lange bridge, a first circulator, a second circulator, a first double-pole double-throw switch, a second double-pole double-throw switch, a first narrowband filter, a second narrowband filter, a first wideband filter, a second wideband filter, a first single-pole double-throw switch, and a second single-pole double-throw switch; The polarization switching module is directly connected with the transceiving antenna unit, and through switching and combination of the first double-pole double-throw switch, the second double-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch, narrowband right-handed circular polarization transmission and narrowband left-handed circular polarization reception, narrowband right-handed circular polarization transmission and narrowband right-handed circular polarization reception, narrowband left-handed circular polarization transmission and narrowband left-handed circular polarization reception, narrowband right-handed circular polarization transmission and narrowband right-handed circular polarization reception, wideband right-handed circular polarization transmission and wideband left-handed circular polarization reception, wideband right-handed circular polarization transmission and wideband right-handed circular polarization reception, wideband left-handed circular polarization transmission and wideband left-handed circular polarization reception, and wideband right-handed circular polarization transmission and wideband right-handed circular polarization reception can be realized.

2. The high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna according to claim 1, characterized in that, The transceiving antenna array surface comprises MxN transceiving antenna units to realize mutual conversion between radio frequency signals and electromagnetic radiation; the comprehensive function circuit board integrates antenna feed and polarization switching, transceiving power dividing and combining network, radio frequency signal transceiving and phase shifting, beam control, and power supply conversion functions.

3. The high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna according to claim 2, characterized in that: The transceiving circuit layer comprises MxN transceiving circuit modules, one beam control circuit module, one power supply circuit module, one control interface, one power supply interface, one radio frequency signal input port and one radio frequency signal output port; the radio frequency signal input port is a total input end of a transmitting excitation signal of the phased array antenna; the radio frequency signal output port is a total output end of a received signal of the phased array antenna; and the power supply interface is a total power supply input port of the phased array antenna. The control interface is an external interaction interface of control signals of the phased array antenna, used for receiving external control instructions and returning state information; the power supply circuit module converts external input power supply into low-voltage direct current required by each circuit module of the phased array antenna for work, and integrates a power supply filter to filter out external interference; the beam control module is the master control of the phased array antenna, responsible for data and instruction interaction with external control, controlling other circuit modules of the phased array antenna to work and performing health management; the transceiver circuit module includes a transmitting channel and a receiving channel, the transmitting channel includes a drive amplifier, a digital attenuator, a digital phase shifter, a temperature compensation attenuator, an equalizer and a power amplifier, responsible for power amplification and phase shift processing of the fed transmission excitation signal, and feeding into the corresponding transceiving antenna unit through the feed circuit layer to transmit to the free space; The receiving channel of the transceiver circuit module includes a low noise amplifier, a drive amplifier, a digital attenuator, a digital phase shifter, a temperature compensation attenuator and an equalizer, responsible for low noise amplification and phase shift processing of the received radio frequency signal input through the feed circuit layer.

4. The high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna according to claim 1, characterized in that: The transmitting power dividing network layer and the receiving combining network layer are both strip line T junction and feed network, the transmitting power dividing network layer is used for dividing 1-way transmission excitation signal into MxN signals and feeding into each transmitting channel of the transceiver circuit layer, and the receiving combining network layer is used for combining MxN signals of each receiving channel of the transceiver circuit layer and outputting.

5. The high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna according to claim 1, characterized in that: The power supply circuit layer is used for distributing low-voltage direct current output by the power supply circuit module in the transceiver circuit layer to each power-consuming component of the transceiver circuit layer and the feed circuit layer through a via hole / blind hole.

6. The high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna according to claim 1, characterized in that: The digital circuit layer is used for distributing the beam control circuit module control signal in the transceiver circuit layer to the control pin of each component of the transceiver circuit layer and the feed circuit layer through a via hole / blind hole.

7. The high-integration circularly polarized reconfigurable reconnaissance and communication integrated phased array antenna according to claim 1, characterized in that: The reference ground layer is used for providing a reference ground for microstrip circuits or strip line circuits, and together with the isolation ground layer, it is used for isolating signal crosstalk between different layers of circuits.

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