CN113948879B - Modular phased array antenna apparatus - Google Patents
Modular phased array antenna apparatus Download PDFInfo
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- CN113948879B CN113948879B CN202111157118.1A CN202111157118A CN113948879B CN 113948879 B CN113948879 B CN 113948879B CN 202111157118 A CN202111157118 A CN 202111157118A CN 113948879 B CN113948879 B CN 113948879B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
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- 238000013461 design Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000010363 phase shift Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000005669 field effect Effects 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The modularized phased array antenna device disclosed by the invention has the advantages of good maintainability, low replacement cost and high fault detection rate. The invention is realized by the following technical scheme: the plug-in motherboard realizes the uniform distribution of a power supply network, a feed network and a wave control network required by each minimum module unit through a multi-layer PCB, and provides required power supply and control signals for the operation of the minimum module units; the 4 phase shifter chips of each minimum module unit are separated by a distance dx along the X-axis direction and a distance dy along the Y-axis direction by taking the SMP connector as the origin of a rectangular coordinate system, and each phase shifter chip integrates a 4-way 6-bit digital control phase shifter, a Wilkinson power divider, an amplifier and a 24-bit serial-parallel conversion driver which realize the phase control function of a receiving and transmitting signal; the wave control circuit on the wave control motherboard realizes the amplitude-phase control of the receiving and transmitting signals, the calibration circuit realizes the amplitude-phase calibration according to the difference of each channel, and the power supply circuit provides the wave control motherboard and the minimum module unit with the required working power supply.
Description
Technical Field
The invention relates to a phased array antenna in the field of satellite communication, in particular to a modularized phased array antenna.
Background
In the satellite communication field, compared with the traditional communication-in-motion antenna, the millimeter wave active phased array antenna has no huge servo tracking system, has high beam speed and controllable direction, can track satellites in real time, has light weight, and can be produced in a large scale; the millimeter wave active phased array antenna does not contain movable parts, has excellent reliability, and the overall performance of the antenna is not affected even if a few antenna units in the array fail. A phased array antenna refers to an antenna in which the pattern shape is changed by controlling the feed phase of radiating elements in the array antenna. The control phase can change the direction of the maximum value of the antenna pattern so as to achieve the purpose of beam scanning. In special cases, the flap level, the minimum position and the shape of the entire pattern can also be controlled, for example, a cosecant square pattern is obtained and the pattern is adaptively controlled. Its feed phase is generally controlled by an electronic computer, and the phase change speed is fast (in the order of milliseconds), i.e. the maximum value of the antenna pattern or other parameters change rapidly. This is the biggest feature of phased array antennas. The wave beam pattern change of the phased array antenna is controlled by a computer, the antenna parameters of the phased array antenna can change along with the change of a wave beam scanning angle, and in addition, the structural parameters of the phased array antenna can influence the wave beam pattern shape of the antenna, (the space between array elements, the array element arrangement form, the parameters of a feed system and the like, the feed structure excites the array element complex current through a feed network so as to control wave beam direction and shape. The development of the Ka-band satellite communication system is an important direction and trend of satellite communication development. The Ka phased array antenna receives the pointing angle information sent by the antenna foundation measurement and control module, and the synthetic pattern of the antenna is aligned with the relay satellite to establish a return transmission link, so that the beam coverage of the antenna with the angle of +/-60 degrees is realized. The Ka frequency band satellite communication phased array antenna subarray comprises two products, namely a receiving subarray and a transmitting subarray. The subarrays are all in a 16 multiplied by 16 channel architecture mode, and an antenna, a transceiver chip, power conversion and beam control are integrated on the same PCB. The four-in-one CMOS multifunctional chip is adopted to integrate a receiving channel and a transmitting channel respectively, and single-channel integrated amplitude-phase control and signal amplification are adopted. The receiving and transmitting antenna subarrays not only realize the functions of power distribution, amplitude and phase control and gain amplification of each channel, but also integrate the beam resolving function of the subarrays. The subarray adopts a 3.3V power supply mode to realize internal power supplies of all channels, and the subarray adopts an SPI protocol for external communication to carry out instruction transmission and data transmission. The subarray is provided with a wave control buffer, wave control codes are preset in advance, and global loading signals are adopted for loading control, so that the beam switching time is reduced. The Ka frequency band miniaturized phased array antenna has the advantages of compact structure, high scanning speed and high reliability, can realize modularized design, and has great superiority in radar technology and mobile satellite communication application. Along with the development of low-loss technology of a feed network, the miniaturization and low-loss technology of an electric control phase shifter are also increasingly widely applied to Ka frequency band phased array antennas. The phased array antenna mainly comprises an antenna housing, an antenna array surface, a TR component, a heat radiating device, a feed network, a wave controller, a power supply and the like. In design, phased array antenna structures can be divided into longitudinally integrated laterally assembled "brick" structures and laterally integrated longitudinally assembled "tile" structures. The two structures have advantages and disadvantages and have different use scenes. The Ka frequency band dual-polarized tile type phased array antenna integrates an antenna array surface, a TR channel, a wave control module, a heat radiation module, a power supply module and a feed network. The integration of millimeter wave signals and a digital control part is realized by combining a self-grinding silicon-based multifunctional chip with a gallium arsenide TR chip, and meanwhile, the TR chip and the multifunctional chip are integrated into a whole by adopting a mixed packaging mode, so that the mounting mode of the surface mount is realized. When the Ka frequency band adopts a simple integrated 'brick type' structure integration mode, along with the increasing of the scale of the frequency band array, the cost of a single set of brick type antenna is higher, the integrated Ka wave band phased array module design antenna of the traditional mode is high in maintenance and replacement cost, and the processing design period is longer.
Disclosure of Invention
Aiming at the problems, the invention provides the modularized phased array antenna device which has the advantages of good maintainability, low replacement cost, high fault detection rate, good universality and good reusability, and mainly solves the problems of high maintenance and replacement cost, long design period and the like of the traditional integrated structure by modularizing an antenna array surface and a TR assembly and matching with a corresponding wave controller and a feed network.
The above object of the present invention can be achieved by a modular phased-array antenna apparatus comprising: the method is divided into 4 multiplied by 4 minimum module units 1 distributed on the modular antenna array surface of the plugging mother board 2 according to a matrix array, and comprises the following steps of completing parallel opposite plugging wave control mother boards 3 and functional circuits arranged on the same by adopting connectors and the plugging mother board 2, and is characterized in that: the 4x4 array elements form a phased array antenna array plane minimum unit module 1 in a modularized manner, and the plug-in motherboard 2 realizes the uniform distribution of a power supply network, a feed network and a wave control network required by each minimum module unit 1 through a multi-layer PCB, so as to provide required power supply and control signals for the operation of the minimum module units 1; the 4 phase shifter chips of each minimum module unit 1 are separated by a distance dx along the X-axis direction and a distance dy along the Y-axis direction by taking the SMP connector as the origin of a rectangular coordinate system, and the edge distances of the peripheral plates of the minimum module units 1 are dx/2 and dy/2 respectively; the four phase shifter chips are surface-mounted on the front face of the four quadrants of the rectangular coordinate system of the minimum module unit 1, each phase shifter chip integrates a 4-path 6-bit digital phase shift, a Wilkinson power divider, an amplifier and a 24-bit serial-parallel conversion driver which realize the phase control function of a receiving and transmitting signal, the feed network adopts a Wilkinson parallel feed network, the phase shifter chips are connected to the plugging mother board 2 through SMP connectors in pairs, low-speed control signals and power supplies required by the phase shifters are connected to the plugging mother board 2 through pin connectors, and signals are transmitted through low-frequency connectors positioned on the upper side and the lower side of the minimum module unit 1; the wave control motherboard circuit is composed of a wave control circuit, a calibration circuit and a power supply circuit, wherein the wave control circuit realizes amplitude-phase control of a transmitting signal, the calibration circuit realizes amplitude-phase calibration according to the difference of each channel, and the power supply circuit supplies required power to the wave control functional circuit and the minimum module unit 1 to complete back-end control and energy transmission.
Compared with the prior art, the invention has the following beneficial effects:
good maintainability and low replacement cost. The invention adopts the 4 multiplied by 4 minimum module units 1 which are distributed on the modular antenna array surface of the plugging mother board 2 according to the matrix array, adopts the connector and the plugging mother board 2 to finish the parallel opposite plugging wave control mother board 3 and the functional circuit arranged on the same, and has strong modularization, consistency and adaptability. The 16 array elements of the minimum module unit support multiple replacement, so that the flexibility is high, the minimum module unit can be conveniently maintained or replaced, and the whole phased array antenna is not replaced, so that the replacement cost is low. If the TR component fails in the phased array antenna system, the smallest module unit of the failure can be locked through the calibration circuit, and the locatability and maintainability are stronger.
The fault detection rate is high, and the locatability is strong. The invention adopts the 4X4 minimum unit module 1 and the TR component to form 16 array elements in a modularization way, the 16 array elements form a phased array antenna array surface in a modularization way, the plug-in motherboard 2 realizes the uniform distribution of a power supply network, a feed network and a wave control network required by each minimum unit module 1 through a multi-layer PCB, and provides required power supply and control signals for the operation of the minimum unit module 1. The calibration circuit realizes amplitude and phase calibration according to the difference of each channel, and the working state of each minimum module unit can be conveniently monitored through the calibration functional circuit on the wave control motherboard, so that the locatability is improved, and the fault detection rate is improved.
The universality and the reusability are good. The invention adopts each minimum module unit 1 to take the origin of a rectangular coordinate system as the center, the distance dx along the X-axis direction and the distance dy along the Y-axis direction are separated, the distance of 4 phase shifter chips is used for enabling the edge distances of 4 plates to be dx/2 and dy/2, the front sides of the four quadrants of the rectangular coordinate system of the minimum module unit 1 are attached to the surfaces of the four quadrants of the rectangular coordinate system, each phase shifter chip integrates a four-way 6-bit digital phase shifting, a Wilkinson power divider, an amplifier and a 24-bit serial-parallel conversion driver for realizing the phase control function of a receiving and transmitting signal, a feed network adopts a Wilkinson parallel feed network, the phase shifter is connected to a plugging mother board 2 through an SMP connector pair, low-speed control signals and power supplies required by the phase shifters are connected to the plugging mother board 2 through pin connectors, and signals are transmitted through low-frequency connectors positioned on the upper side and the lower side of the minimum module unit 1; the minimum module unit 16 array elements can be used as a common module of the phased array antenna, and under the conditions of 128 array elements, 256 array elements and higher array element number, only the minimum module units with corresponding number are required to be expanded according to the total number of the array elements, so that the module universality and the reusability are good. Because the minimum module unit does not need to be redesigned, when a new phased array antenna with higher array element number is needed, only the plug-in motherboard is needed to be redesigned, so that the development period can be greatly saved, and the development difficulty is reduced.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a schematic diagram of a modular phased-array antenna of the present invention;
fig. 2 is a front view of the smallest modular unit of fig. 1;
FIG. 3 is a rear view of FIG. 2;
FIG. 4 is a schematic view of the construction of the cartridge motherboard of FIG. 1;
FIG. 5 is a schematic diagram of the schematic circuit of the wave-controlled motherboard of FIG. 4;
the technical scheme of the invention is further described in detail below with reference to the accompanying drawings.
Detailed Description
See fig. 1 and 2. In a preferred embodiment described below, a modular phased-array antenna apparatus comprises: the method is divided into 4 multiplied by 4 minimum module units 1 distributed on the modular antenna array surface of the plugging mother board 2 according to a matrix array, and comprises the following steps of completing parallel opposite plugging wave control mother boards 3 and functional circuits arranged on the same by adopting connectors and the plugging mother board 2, and is characterized in that: the 4x4 array elements form a phased array antenna array plane minimum unit module 1 in a modularized manner, and the plug-in motherboard 2 realizes the uniform distribution of a power supply network, a feed network and a wave control network required by each minimum module unit 1 through a multi-layer PCB, so as to provide required power supply and control signals for the operation of the minimum module units 1; the 4 phase shifter chips of each minimum module unit 1 are separated by a distance dx along the X-axis direction and a distance dy along the Y-axis direction by taking the SMP connector as the origin of a rectangular coordinate system, and the edge distances of the peripheral plates of the minimum module units 1 are dx/2 and dy/2 respectively; the four phase shifter chips are surface-mounted on the front face of the four quadrants of the rectangular coordinate system of the minimum module unit 1, each phase shifter chip integrates a 4-path 6-bit digital phase shift, a Wilkinson power divider, an amplifier and a 24-bit serial-parallel conversion driver which realize the phase control function of a receiving and transmitting signal, the feed network adopts a Wilkinson parallel feed network, the phase shifter chips are connected to the plugging mother board 2 through SMP connectors in pairs, low-speed control signals and power supplies required by the phase shifters are connected to the plugging mother board 2 through pin connectors, and signals are transmitted through low-frequency connectors positioned on the upper side and the lower side of the minimum module unit 1; the wave control motherboard is composed of a wave control circuit, a calibration circuit and a power supply circuit, wherein the wave control circuit realizes amplitude and phase control of a transmitting signal, the calibration circuit realizes amplitude and phase calibration according to the difference of each channel, and the power supply circuit supplies required power to the wave control functional circuit and the minimum module unit 1 to complete back-end control and energy transmission.
See fig. 2. Each minimum module unit is composed of 4 phase shifter chips, all the phase shifter chips are positioned on the front face of the minimum module unit and are respectively a phase shifter 1, a phase shifter 2, a phase shifter 3 and a phase shifter 4, wherein the patch directions of the phase shifter 1 and the phase shifter 3 are consistent, the patch directions of the phase shifter 2 and the phase shifter 4 are consistent, and the patch directions of the phase shifter 1 and the phase shifter 2 are 180 degrees different. In the case of expanding the number of antenna elements, in order to ensure that the distances between all of the phase shifters are uniform after the minimum module unit is inserted into the motherboard, it is required that the distances between the phase shifter 1 and the phase shifter 2 in the X-axis direction in the figure be dx, the distances between the phase shifter 3 and the phase shifter 4 in the X-axis direction be dx, the distances between the phase shifter 1 and the phase shifter 3 in the Y-axis direction be dy, and the distances between the phase shifter 2 and the phase shifter 4 be dy. The distance between the phase shifter chip and the minimum module unit board edge is dx/2 and dy/2 respectively. The low-speed control signals and power supply needed by the phase shifter are connected to the plug-in motherboard 2 through pin connectors, and the low-frequency connectors are positioned on the upper side and the lower side of the module. The feed network is plugged into the mother board 2 by custom-made SMP connectors with cross-shaped fixing legs and the cylindrical part is raised somewhat relative to the PCB to ensure that it does not interfere with the phase shifter chip during soldering. The feeding network adopts a Wilkinson parallel feeding network, and the SMP connector is positioned in the middle of the smallest module unit, so that the electrical lengths from the feeding network to the 4 phase shifter chips can be ensured to be equal; the antenna array surface adopts a multi-layer PCB as a substrate, and the interconnection design of the antenna array surface and the TR assembly is completed through strip line conversion. The power circuit for completing the power supply of the main board is a high-speed signal processing main board, and the interface processing auxiliary board and the rigid-flexible connecting board for connecting the high-speed signal processing main board and the interface processing auxiliary board provide working power.
See fig. 3 and 4. The minimum module units 1 shown in fig. 2 are inserted through the mother board 2, after the insertion, the back surfaces of all the minimum module units 1 form a new antenna array surface, and the antenna is fixed through screws, so that the antenna meets the vibration requirement. The plug-in motherboard 2 realizes the uniform distribution of a power supply network, a feed network and a wave control network required by each minimum module unit 1 through a multi-layer PCB, provides required power supply and control signals for the operation of the minimum module units 1, and the feed network adopts a U-shaped cup holder opening,The swan shape formed by the n-shaped cup openings in series is distributed on the back of each minimum module unit 1. The swastika-shaped feed network on the back of each minimum module unit 1 is connected with a U-shaped opening cup seat to realize the mutual connection, every two swastika-shaped feed networks are distributed in mirror symmetry, the swastika-shaped feed networks are connected with a U-shaped opening cup seat expansion connecting line in series through a vertical arched microstrip line to form a 4 multiplied by 4 interconnection swastika-shaped feed network, and further the swastika-shaped feed networks can be continuously expanded in the same way.
See fig. 5. The wave control motherboard circuit connected with the control terminal comprises: the on-line monitoring system comprises an externally-hung electrically-erasable programmable read-only memory EEPORM chip, a field programmable gate array FPGA connected with a temperature sensor and a voltage detection circuit, wherein the EEPROM chip is used for completing initialization parameter storage and log storage, the temperature sensor is used for detecting the working environment temperature of an antenna, and the voltage detection circuit is used for monitoring the working voltage of a single board. The calibration circuit connected with the antenna interface unit AIU adopts a calibration AD chip capable of providing a fault detection function, and the calibration of TR parameters is completed; the FPGA completes the power supply and phase shift control of the TR component through the general purpose input/output GPIO and the metal oxide semiconductor field effect MOS transistor.
The foregoing is merely a preferred embodiment for implementing a generic and modular phased array antenna apparatus, it being understood that the invention is not limited to the forms disclosed herein and is not to be construed as limited to other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of changes within the scope of the inventive concept, either as taught or as a matter of skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (8)
1. A modular phased-array antenna apparatus comprising: the method is divided into 4 multiplied by 4 minimum module units (1) distributed on a modular antenna array surface of a plug-in motherboard (2) according to a matrix array, and adopts a connector and the plug-in motherboard (2) to complete a parallel opposite-plug-in wave control motherboard (3) and a functional circuit arranged on the same, and is characterized in that: 4x4 array elements form a phased array antenna array plane minimum module unit (1) in a modularization manner, and the plug-in motherboard (2) realizes the uniform distribution of a power supply network, a feed network and a wave control network required by each minimum module unit (1) through a multilayer PCB, so as to provide required power supply and control signals for the operation of the minimum module units (1); the 4 phase shifter chips of each minimum module unit (1) are separated by a distance dx along the X-axis direction and a distance dy along the Y-axis direction by taking the SMP connector as the origin of a rectangular coordinate system, and the edge distances of the peripheral plates of the minimum module units (1) are dx/2 and dy/2 respectively; the four phase shifter chips are surface-mounted on the front sides of four quadrants of a rectangular coordinate system of a minimum module unit (1), each phase shifter chip integrates a 4-path 6-bit digital phase shifting, a Wilkinson power divider, an amplifier and a 24-bit serial-parallel conversion driver which realize a phase control function of a receiving and transmitting signal, a feed network adopts a Wilkinson parallel feed network, the feed network is connected to a plugging mother board (2) through an SMP connector pair, low-speed control signals and power supplies required by the phase shifters are connected to the plugging mother board (2) through pin connectors, and signals are transmitted through low-frequency connectors positioned on the upper side and the lower side of the minimum module unit (1); the wave control motherboard consists of a wave control circuit, a calibration circuit and a power supply circuit, wherein the wave control circuit realizes amplitude-phase control of a transmitting signal, the calibration circuit realizes amplitude-phase calibration according to the difference of each channel, and the power supply circuit supplies required power to the wave control motherboard and the minimum module unit (1) to finish back-end control and energy transmission;
each minimum module unit consists of 4 phase shifter chips, all the phase shifter chips are positioned on the front surface of the minimum module unit and are respectively a phase shifter 1, a phase shifter 2, a phase shifter 3 and a phase shifter 4, wherein the patch directions of the phase shifter 1 and the phase shifter 3 are consistent, the patch directions of the phase shifter 2 and the phase shifter 4 are consistent, and the patch directions of the phase shifter 1 and the phase shifter 2 are different by 180 degrees;
the distance between the phase shifter 1 and the phase shifter 2 in the X-axis direction is dx, the distance between the phase shifter 3 and the phase shifter 4 in the X-axis direction is dx, the distance between the phase shifter 1 and the phase shifter 3 in the Y-axis direction is dy, and the distance between the phase shifter 2 and the phase shifter 4 is dy.
2. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the chip distance of the phase shifter is dx/2 and dy/2 respectively from the side of the minimum module unit board, low-speed control signals and power supplies required by the phase shifter are connected to the plug-in motherboard (2) through pin connectors, and the low-frequency connectors are positioned on the upper side and the lower side of the module.
3. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the feed network is connected to the plug-in motherboard (2) by custom SMP connectors with cross-shaped fixing legs, and the cylindrical part is lifted to a certain extent relative to the PCB, so that the welding is ensured not to interfere with the phase shifter chip.
4. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the feed network employs a wilkinson parallel feed network with SMP connectors located in the middle of the smallest module unit to ensure equal electrical lengths of the feed network to the 4 phase shifter chips.
5. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the antenna array surface adopts a multi-layer PCB as a substrate, and the interconnection design of the antenna array surface and the TR assembly is completed through strip line conversion.
6. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the minimum module units (1) are inserted through the insertion mother board (2), after insertion, the back surfaces of all the minimum module units (1) form a new antenna array surface, and the antenna is fixed through screws, so that the antenna meets the vibration requirement.
7. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the feed network is formed by a U-shaped cup seat opening,The swastika shapes formed by the U-shaped cup openings are distributed on the back of each minimum module unit (1), the swastika-shaped feed networks on the back of each minimum module unit (1) are connected with each other in a U-shaped opening cup connecting line to realize the mirror symmetry distribution of the swastika-shaped feed networks, the swastika-shaped feed networks are connected with each other in pairs in a mirror symmetry mode, and 4 multiplied by 4 interconnection feed networks are formed through U-shaped opening cup expansion connecting lines and U-shaped cup opening expansion connecting lines which are connected in series through vertical arched microstrip lines.
8. A modular phased-array antenna apparatus as claimed in claim 1, wherein: the wave control motherboard connected with the control terminal comprises: the on-line monitoring system comprises an externally-hung electrically-erasable programmable read-only memory EEPORM chip, a field programmable gate array FPGA connected with a temperature sensor and a voltage detection circuit, wherein the EEPROM chip is used for completing initialization parameter storage and log storage, the temperature sensor is used for detecting the working environment temperature of an antenna, and the voltage detection circuit is used for monitoring the working voltage of a single board; the calibration circuit connected with the antenna interface unit AIU adopts a calibration AD chip capable of providing a fault detection function, and the calibration of TR parameters is completed; the FPGA completes the power supply and phase shift control of the TR component through the general purpose input/output GPIO and the metal oxide semiconductor field effect MOS transistor.
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| CN115037352B (en) * | 2022-05-06 | 2023-06-16 | 北京理工大学 | Noise reduction method for satellite beam alignment enhancement |
| CN116647249B (en) * | 2023-07-27 | 2023-10-20 | 上海瀚儒通信技术有限公司 | Modularized intelligent signal shielding device unit, shielding device and shielding control method |
| CN117317619B (en) * | 2023-12-01 | 2024-04-12 | 成都恪赛科技有限公司 | + -45 DEG dual-polarized four-feed tile type phased array antenna |
| CN119695482A (en) * | 2024-12-23 | 2025-03-25 | 中国电子科技集团公司第十四研究所 | A chip-based active line feed network for dual-polarization weather radar |
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