CN111984049A - Differential pressure control method and system and active phased array antenna - Google Patents
Differential pressure control method and system and active phased array antenna Download PDFInfo
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- CN111984049A CN111984049A CN202010901920.6A CN202010901920A CN111984049A CN 111984049 A CN111984049 A CN 111984049A CN 202010901920 A CN202010901920 A CN 202010901920A CN 111984049 A CN111984049 A CN 111984049A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
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- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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Abstract
The embodiment of the invention provides a pressure difference control method, a pressure difference control system and an active phased array antenna, and relates to the technical field of antennas, wherein each area of the active phased array antenna is respectively connected with a voltage regulator, and the method comprises the following steps: after the power supply is switched on, the voltage of each area in the active phased array antenna is obtained, the voltage regulating value of each area is obtained according to the voltage analysis of each area, and then the voltage of the connected area is regulated through each voltage regulator according to the voltage regulating value of each area obtained through analysis, so that the voltage difference between the areas in the active phased array antenna is reduced, and the performance of the active phased array antenna is improved.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a pressure difference control method and system and an active phased array antenna.
Background
When the active phased array antenna works, required voltage needs to be provided for each device, and the total current for supplying power to each device can reach dozens of amperes to hundreds of amperes according to the difference of array surface scales of the active phased array antenna. Nowadays, the power supply of an active phased array antenna is generally disposed on one side of an antenna board, and current flows from the power supply side to the side where each device is located. Because the active phased array antenna array face is great, PCB (Printed Circuit Board) copper foil self resistance etc. influence, the electric current is in the flow process, voltage reduces gradually, consequently can lead to the voltage of the whole array face different regions of active phased array antenna inconsistent, the device pin department voltage that is located the region nearer from the power is higher, the device pin department voltage that is located the region farther from the power is lower, each regional voltage uniformity is relatively poor, cause adverse effect to the performance of active phased array antenna.
Disclosure of Invention
The invention aims to provide a differential pressure control method, a differential pressure control system and an active phased array antenna, which can solve the problem of poor voltage consistency of all areas in the active phased array antenna and improve the performance of the active phased array antenna.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment of the present invention provides a voltage difference control method, configured to control a voltage difference between regions in an active phased array antenna, where the regions of the active phased array antenna are respectively connected to a voltage regulator, where the method includes:
acquiring the voltage of each area in the active phased array antenna after the power supply is switched on;
analyzing to obtain a voltage regulating value of each region according to the voltage of each region;
and regulating the voltage of the connected area through each voltage regulator according to the voltage regulating value of each area obtained by analysis so as to reduce the voltage difference between the areas.
In an alternative embodiment, analyzing the voltage adjustment value of each region according to the voltage of each region includes:
calculating a voltage difference between a voltage of a region other than the region to which the reference voltage belongs and the reference voltage by using the lowest voltage among the voltages of the regions as the reference voltage;
and calculating the voltage regulating value of each region according to the pressure difference.
In an optional embodiment, the voltage regulator is a resistor, each resistor is connected to a power input end of each region in the active phased array antenna, and a voltage regulation value of each region is calculated according to a voltage difference, and the method includes:
calculating a resistance value for adjusting the voltage of each area according to the differential pressure and ohm law, and taking the resistance value as a voltage adjusting value;
regulating the voltage of the connected area by each voltage regulator, comprising:
and setting the resistance value of the resistor connected to each region as the calculated resistance value of the corresponding region to adjust the voltage of the connected region to a target voltage, wherein the voltage difference between the target voltage and the reference voltage is within a set range.
In an alternative embodiment, each region of the active phased array antenna includes at least one radio frequency chip, the method further comprising:
and adjusting the output voltage of the power supply so that the voltage of the radio frequency chip reaching the area with the lowest voltage in the active phased array antenna reaches the working voltage of the radio frequency chip.
In an alternative embodiment, the method further comprises the step of area dividing the active phased array antenna, the step comprising:
and carrying out region division on the active phased-array antenna according to the distance from the power supply output end, wherein each divided region comprises at least one radio frequency chip, and the distance difference between each radio frequency chip in each divided region and the power supply output end is within a preset range.
In a second aspect, an embodiment of the present invention provides a differential pressure control system, which is applied to an active phased array antenna, and includes a processor and a plurality of voltage regulators, where the plurality of voltage regulators are respectively connected to different areas of the active phased array antenna, and the processor is in communication connection with the plurality of voltage regulators;
the processor is used for obtaining the voltage of each area in the active phased array antenna after the power supply is switched on, analyzing and obtaining the voltage regulating value of each area according to the voltage of each area, and regulating the voltage of the connected area through each voltage regulator according to the voltage regulating value of each area obtained through analysis so as to reduce the voltage difference between the areas.
In an alternative embodiment, the processor is configured to analyze the voltage adjustment values for each of the zones by:
calculating a voltage difference between a voltage of a region other than the region to which the reference voltage belongs and the reference voltage by using the lowest voltage among the voltages of the regions as the reference voltage;
and calculating the voltage regulating value of each region according to the pressure difference.
In an alternative embodiment, the voltage regulator is a resistor, and each resistor is connected to a power input end of each area in the active phased array antenna;
the processor is used for calculating a resistance value used for adjusting the voltage of each area according to the voltage difference and ohm law, using the resistance value as a voltage adjusting value, and setting the resistance value of the resistor connected to each area as the calculated resistance value of the corresponding area so as to adjust the voltage of the connected area to a target voltage, wherein the voltage difference between the target voltage and the reference voltage is within a set range.
In an alternative embodiment, each region of the active phased array antenna includes at least one rf chip, and the processor is further configured to adjust the output voltage of the power supply such that the voltage on the rf chip in the region with the lowest voltage in the active phased array antenna reaches the operating voltage of the rf chip.
In a third aspect, an embodiment of the present invention provides an active phased array antenna, where each area of the active phased array antenna is connected to a voltage regulator, and based on the voltage regulators, after a power supply is turned on, a difference between voltages of each area in the active phased array antenna is within a set range.
The beneficial effects of the embodiment of the invention include, for example: the voltage regulators are respectively connected to all the areas of the active phased array antenna, the voltage regulating value of each area is obtained according to the voltage analysis of each area in the active phased array antenna after the power supply is switched on, and then the voltage of the connected area is regulated through each voltage regulator, so that the voltage difference between all the areas in the active phased array antenna is reduced, and the performance of the active phased array antenna is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic layout of an active phased array antenna in the prior art;
FIG. 2 is a block diagram of a differential pressure control system according to an embodiment of the present invention;
fig. 3 is a schematic layout diagram of an active phased array antenna according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a differential pressure control method according to an embodiment of the present invention;
fig. 5 is another schematic flow chart of a differential pressure control method according to an embodiment of the present invention.
Detailed Description
When the active phased array antenna works, required voltage needs to be provided for each device in a array plane, and the required power supply voltage of the active phased array antenna is generally low and is usually 1V or less. Depending on the size of the active phased array antenna array, the total current to power each device in the array can typically reach tens to hundreds of amperes. Due to structural limitation, a commonly-used power supply structure is as shown in fig. 1, a power supply is generally arranged on one side of an antenna plate of an active phased array antenna, current flows from the power supply side to the side where each device is located, and due to the influence of a large array surface of the active phased array antenna, the resistance of a copper foil of a PCB and the like, the voltage of the current is gradually reduced in the flowing process, so that the voltage of different areas of the whole array surface of the active phased array antenna is inconsistent. For example, in fig. 1, the device voltage is higher in the region closer to the power supply, and the device voltage is lower in the region farther from the power supply (the current flowing direction in fig. 1 is taken as a column, and the voltage at each device pin is inversely related to the distance from the power supply in the column direction), and the voltage uniformity of each region is poor. According to the current and the size of the array surface of the active phased array antenna, the voltage difference between the areas can reach several millivolts to hundreds of millivolts, and the large voltage difference can cause the active gain of the active phased array antenna to be reduced, thereby causing adverse effect on the performance of the active phased array antenna.
In order to keep the voltage of each area in the active phased array antenna as consistent as possible and reduce the voltage difference of different positions of the whole array surface of the active phased array antenna, the increase of the thickness of a single-layer copper foil or the increase of the number of PCB layers can be considered, and both the thickness and the number of the PCB layers are basically reduced by reducing the resistance of the PCB copper foil, so that the voltage difference of each area in the active phased array antenna is reduced. However, since the rf board processing technology is complex, multiple times of pressing, hole burying, resistance burying, capacitance burying, and the like are often required, and the board is usually an expensive high-frequency board, and no matter the thickness of the single-layer copper foil is increased or the number of layers of the PCB is increased, a lot of extra cost is increased, the processing difficulty is increased, the yield is reduced, and the application of the rf board is limited. Secondly, increasing the thickness of the single-layer copper foil or increasing the number of layers of the PCB can cause the thickness of the whole antenna plate of the active phased array antenna to be correspondingly increased, and further certain influence is caused on standing waves and loss of the active phased array antenna.
In order to solve at least one of the above technical problems, embodiments of the present invention provide a voltage difference control method, a system and an active phased array antenna, so as to reduce the voltage difference between the regions in the active phased array antenna simply, conveniently and at a low cost, and improve the performance of the active phased array antenna.
The technical solution of the embodiments of the present invention is explained below by means of possible embodiments.
The defects existing in the above solutions are the results obtained after the inventor has practiced and studied carefully, so the discovery process of the above problems and the solution proposed by the present invention to the above problems should be the contribution of the inventor to the present invention in the process of invention.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In order to enable those skilled in the art to utilize the present disclosure, the following embodiments are presented. It will be apparent to those skilled in the art that the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention.
It should be noted that the term "comprising" is used in the embodiments of the invention to indicate the presence of the features stated hereinafter, but does not exclude the addition of further features.
Referring to fig. 2, the present embodiment provides a differential pressure control system applied to an active phased array antenna for reducing a differential pressure between regions of the active phased array antenna. The differential pressure control system comprises a processor and a plurality of voltage regulators, wherein the voltage regulators are respectively connected to different areas of the active phased array antenna, and the processor is in communication connection with the voltage regulators.
The processor is used for obtaining the voltage of each area in the active phased array antenna after the power supply is switched on, analyzing the voltage of each area according to the voltage of each area to obtain a voltage regulating value of each area, and regulating the voltage of the connected area through each voltage regulator according to the voltage regulating value of each area obtained through analysis, so that the purpose of reducing the voltage difference between the areas in the active phased array antenna is achieved.
In the embodiment of the invention, the processor can be integrated in the active phased array antenna or can be independent of the active phased array antenna. The processor is an electronic device with information analysis and processing functions, and may include one or more processing cores (e.g., a single-core processor (S) or a multi-core processor (S)). Merely by way of example, a Processor may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction Set Processor (ASIP), a Physical Processing Unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a microcontroller Unit, a Reduced Instruction Set computer (Reduced Instruction Set Computing, RISC), a microprocessor, or the like, or any combination thereof.
According to different requirements on the differential pressure control precision, the area of the active phased array antenna can be flexibly divided, wherein the height of the requirement on the differential pressure control precision is positively correlated with the division (fineness) of the area of the active phased array antenna. For example, when the requirement for the accuracy of the differential pressure control is high, the active phased array antenna may be divided into a plurality of small regions by performing fine region division on the active phased array antenna. For example, when the pressure difference control accuracy is required to be general, the active phased array antenna may be divided into a plurality of relatively large regions by relatively large region division.
To further improve the accuracy of the differential pressure control, in one embodiment, the active phased array antenna may be partitioned according to the distance from the power output. Each divided area comprises at least one device, and the distance difference between each device in each divided area and the power output end is within a preset range. Because the voltage at the pin of each device is negatively correlated with the distance from the power supply, the voltage difference of the pin of each device in the same area can be effectively controlled by dividing each device with the distance difference from the output end of the power supply within a preset range into the same area, so that after the voltage adjustment of each area in the active phased array antenna is completed and the voltage difference between the areas is reduced, the voltage difference between the devices on the whole array surface of the active phased array antenna is relatively small, the consistency of the voltage at the pin of each device in the active phased array antenna is further ensured, and the performance of the active phased array antenna is ensured.
The above is merely an example, and the area of the active phased array antenna may be divided by other methods, for example, the area division adapted to the array surface shape of the active phased array antenna and the arrangement method of each device may be performed according to the array surface shape of the active phased array antenna and the arrangement method of each device. For example, the area of the active phased array antenna may be divided by combining two or more area division methods based on comprehensive consideration, which is not limited in this embodiment.
In this embodiment, the voltage regulator can be flexibly selected, as long as the voltage of each region in the active phased array antenna can be adjusted, and then the voltage difference between the regions in the active phased array antenna is reduced. For example, the voltage regulator may be a device capable of increasing the voltage of the area and decreasing the voltage of the area, and accordingly, the voltage regulation value of each area analyzed by the processor may be a voltage value required to be increased or decreased by each area. The processor can use a preset voltage as a target voltage, and adjust the voltage of each region to the target voltage through a voltage regulator connected to each region according to the difference value between the voltage of each region in the active phased-array antenna and the target voltage as a voltage adjustment value of the corresponding region, so that the voltage of each region approaches (equals) the target voltage, and the voltage difference between the regions in the active phased-array antenna is effectively reduced.
The preset voltage may be various, for example, a fixed value, an average value of voltages of the regions in the active phased array antenna, a lowest value of the voltage of the regions in the active phased array antenna, a highest value of the voltage of the regions in the active phased array antenna, and the like.
For another example, the voltage regulator may be a device capable of only reducing the voltage of the area, and accordingly, the voltage regulation value of each area analyzed by the processor may be a voltage value required to be reduced for each area. The processor may use a preset voltage as a target voltage, and the target voltage is not higher than the lowest voltage among voltages of the regions in the active phased array antenna. The voltage value of each area in the active phased array antenna, which is higher than the target voltage, is used as the voltage regulation value of the corresponding area, and the voltage regulator connected to each area regulates the voltage of each area to the target voltage, so that the voltage of each area approaches (equals) the target voltage, and the voltage difference between the areas in the active phased array antenna is effectively reduced.
The processor may also directly use the lowest voltage of the voltages in the respective regions as the reference voltage, calculate a voltage difference between the voltage in the region other than the region to which the reference voltage belongs and the reference voltage, and further calculate the voltage adjustment value in each region according to the voltage difference.
Based on considerations of performance stability, cost, ease of implementation, and the like, in one implementation, the voltage regulator may be a resistor, and each resistor is connected to a power input terminal of each area in the active phased array antenna. When the voltage regulator is a resistor, the processor can calculate a resistance value for regulating the voltage of each region according to the voltage difference and ohm's law, and the resistance value is used as a voltage regulation value. The voltage of the connected region can be adjusted to a target voltage by setting the resistance value of the resistor connected to each region to the calculated resistance value of the corresponding region, wherein the voltage difference between the target voltage and the reference voltage is within a set range.
In this embodiment, the setting range is influenced by the environment, the performance of the device itself, the real-time error, and the like, and the preset allowable deviation range can be flexibly set according to different requirements on the differential pressure control accuracy. In order to improve the accuracy of the differential pressure control as much as possible, in one embodiment, the target voltage is infinitely close to the reference voltage, e.g., the target voltage is equal to the reference voltage.
In order to increase the flexibility of voltage regulation, in one embodiment, the voltage regulator may be an adjustable resistor, and accordingly, in order to enable the adjustable resistor connected to each region to both increase the voltage of the connected region and decrease the voltage of the connected region, the initial state of each adjustable resistor may be capable of both increasing and decreasing the resistance value. If the voltage of the region can be reduced only by the adjustable resistor connected to each region, the initial state of each adjustable resistor may be the adjustable resistance value. Similarly, if only the adjustable resistor connected to each region is required to increase the voltage of the connected region, the initial state of each adjustable resistor may be the adjustable resistor value.
In this embodiment, each voltage regulator may be fixedly mounted in each area of the active phased array antenna, so that the voltage difference of each area in the active phased array antenna may be flexibly controlled based on each voltage regulator. Voltage regulators may also be removably connected to areas of the active phased array antenna to allow the voltage differential control system to be multiplexed. For example, after obtaining a voltage adjustment value (resistance value) of each region in the active phased array antenna based on the differential pressure control system, and setting the resistance value of the adjustable resistor of each region to the calculated resistance value of the corresponding region, if the differential pressure of each region is obtained through analysis and is within a set range, a fixed resistor with a corresponding resistance value can be directly installed in each region, and the voltage regulator connected to each region is detached for next differential pressure adjustment; if the voltage difference of each region is obtained by analysis to be outside the set range, the voltage difference adjusting value can be calculated again until the resistance value of the adjustable resistor of each region is set to be the newly calculated resistance value of the corresponding region, the voltage difference of each region is obtained by analysis to be within the set range, the newly calculated fixed resistor with the corresponding resistance value can be directly installed in each region, and the voltage regulator connected to each region is detached to be used for next voltage difference adjustment.
In order to ensure the reliability of the operation of the devices located in the respective areas of the active phased array antenna, in one embodiment, the output voltage of the power supply may be adjusted, e.g., increased, so that the voltage on the device in the area with the lowest voltage in the active phased array antenna reaches the operating voltage of the device based on the increased output voltage of the power supply.
In this embodiment, the devices located in each area of the active phased array antenna may be various, for example, a chip whose performance is greatly affected by voltage, such as a radio frequency chip.
The embodiment of the present invention exemplarily describes an implementation scheme of a differential pressure control system for performing differential pressure control on a single active phased array antenna, and it can be understood that based on the above differential pressure control system and the implementation principle, differential pressure control can also be performed on more than two active phased array antennas, which is not repeatedly described in this embodiment.
In order to more clearly illustrate the implementation principle of the embodiment of the present invention, the following scenario is taken as an example to illustrate the implementation scheme of the embodiment of the present invention.
If the active phased-array antenna includes a plurality of radio frequency chips, the radio frequency chips are uniformly arranged row by row along the current direction as shown in fig. 1, and in view of the large array surface of the active phased-array antenna, the number of the arranged radio frequency chips is large, in order to improve the differential pressure control accuracy, the radio frequency chips are divided into a plurality of parts along the direction of the row by taking the current flowing direction (arrow direction in fig. 1) as the row, and the total number of the radio frequency chips in each row of each divided part is n.
Referring to fig. 3, in order to facilitate the differential pressure calculation, when designing the PCB of the active phased-array antenna, according to the layout of the rf chips, the copper foil of the main circuit (the area dividing each rf chip into a plurality of parts along the column direction is defined as the main circuit) is laid into a rectangle, the width of the rectangle is x, the distance between every two rows of rf chips is L, the voltage of the main circuit input start terminal of the first row (the row closest to the power supply) of the rf chip is V1, the current consumed by each rf chip is I, the resistivity of the copper foil is ρ, and the thickness is h, so the resistance of the copper foil between every two rows of rf chips is:
the current consumed by a single radio frequency chip is I, and the voltage difference between two adjacent rows of radio frequency chips is:
ΔV＝nIR
the radio frequency chip counts i rows, and the total voltage difference from the first row to the last row (the row farthest from the power supply) is:
the voltage of the radio frequency chip of the mth row is nearly as follows:
Vm＝V1-(m-1)ΔV
the last line of voltage Vi is used as a reference voltage, considering that the distances between the radio frequency chips in the same line in each divided part and the power supply are basically equal, the distance difference between the radio frequency chips in two adjacent lines in each part and the power supply is relatively small, area division is carried out according to a plurality of adjacent lines (such as one line, two lines and the like) of the radio frequency chips in each part, each divided area is defined as a branch (one or more radio frequency chips connected with each branch in figure 3), each branch (each divided area) is respectively connected with an adjustable resistor, and the voltage difference at the pin of each radio frequency chip can be kept at an acceptable level by adjusting the resistance value of the adjustable resistor connected with each branch. The voltage that the adjustable resistor that mth row branch is connected needs to consume is:
ΔVm＝Vm-Vi
after the voltage (voltage difference) to be consumed is obtained, the resistance value (voltage adjusting value) of the adjustable resistor of the corresponding branch can be calculated according to ohm's law, the resistance value of the adjustable resistor of the corresponding branch is adjusted to the calculated resistance value, and the voltage difference adjustment of each area in the active phased array antenna can be achieved.
In order to ensure that the voltage reaching the last row of rf chips can meet the requirements of the rf chips, the output voltage of the power supply may be increased. The value of the increase of the output voltage of the power supply can be flexibly set according to the size of the array surface of the active phased array antenna and the size of the copper foil resistor of the PCB, and the voltage reaching the last row of radio frequency chips can meet the requirements of the radio frequency chips.
By adopting the scheme, each radio frequency chip of the active phased array antenna is divided into a plurality of areas according to the distance from the power supply, the adjustable resistor is connected to the current input end of each area, the area with the lowest voltage in the array surface is selected as the reference area, and the voltage difference between the consumed voltage and the reference area is consumed by adjusting the resistance value of the adjustable resistors at the input ends of other areas, so that the voltage of the active phased array antenna is kept at a relatively consistent level, and the performance of the active phased array antenna is improved. The scheme has the advantages of simplicity, practicability, low cost, good effect and the like, and has wide application value in the differential pressure control application of the active phased array antenna.
The above is only an example, and in other scenarios, the implementation scheme in the embodiment of the present invention may have other variations. For example, if the devices in the active phased array antenna are not regularly arranged, and the copper foil of the divided main path is not rectangular, and the voltage of each area in the active phased array antenna cannot be reliably obtained by calculation, the voltage detection device may perform voltage detection, and the voltage adjustment value of each area may be obtained and adjusted based on the detected voltage analysis. For another example, the array plane of each active phased array antenna may be divided into one or more main paths according to the size of the array plane of the active phased array antenna, each main path may be divided into one or more branches, and each branch in fig. 3 may include one or more rf chips. For another example, the number of the rf chips included in each of the divided regions may be the same or different.
On the basis of the above, as shown in fig. 4, an embodiment of the present invention further provides a voltage difference control method for controlling a voltage difference between regions of an active phased array antenna, where the regions of the active phased array antenna are respectively connected to voltage regulators. The method may be applied to the differential pressure control system of fig. 2, and executed by a processor in the differential pressure control system. It should be understood that in other embodiments, the order of some steps in the differential pressure control method described in the present embodiment may be interchanged according to actual needs, or some steps may be omitted or deleted. The flow of the differential pressure control method shown in fig. 4 is described in detail below, and the method includes S110 to S130.
And S110, acquiring the voltage of each area in the active phased array antenna after the power supply is switched on.
And S120, analyzing and obtaining the voltage regulating value of each region according to the voltage of each region.
And S130, adjusting the voltage of the connected region through each voltage regulator according to the voltage regulation value of each region obtained through analysis so as to reduce the voltage difference between the regions.
Referring to fig. 5, in one embodiment, the analyzing step S120 obtains the voltage adjustment value of each region according to the voltage of each region, which may include steps S121 and S122.
And S121, taking the lowest voltage in the voltages of the regions as a reference voltage, and calculating the voltage difference between the voltage of the region other than the region to which the reference voltage belongs and the reference voltage.
And S122, calculating the voltage regulating value of each area according to the pressure difference.
In one embodiment, the step of calculating the voltage adjustment value for each region according to the voltage difference in S122 may include: and calculating resistance values for adjusting the voltages of the regions according to the voltage difference and ohm's law, and taking the resistance values as voltage adjusting values. Correspondingly, the adjusting the voltage of the connected region by each voltage adjuster in S130 may include: and setting the resistance value of the resistor connected to each region as the calculated resistance value of the corresponding region to adjust the voltage of the connected region to a target voltage, wherein the voltage difference between the target voltage and the reference voltage is within a set range.
Each area of the active phased array antenna may include at least one radio frequency chip, and in order to ensure the reliability of the operation of the radio frequency chip in each area of the active phased array antenna, the method may further include: and adjusting the output voltage of the power supply so that the voltage on the radio frequency chip reaching the area with the lowest voltage in the active phased array antenna reaches the working voltage of the radio frequency chip.
In this embodiment, the active phased array antenna may be divided into regions in various ways, and in one implementation, the active phased array antenna may be divided into regions according to the distance from the power output terminal, where each of the divided regions includes at least one rf chip, and the distance difference between each rf chip in each of the divided regions and the power output terminal is within a preset range.
Because the principle of solving the problem of the differential pressure control method in the embodiment of the invention is similar to that of the differential pressure control system in the embodiment of the invention, the implementation and the principle of the method can be referred to the implementation and the principle of the system, and repeated parts are not described again.
On the basis, the embodiment of the invention further provides an active phased array antenna, each area of the active phased array antenna is respectively connected with a voltage regulator, and based on the voltage regulators, after the power supply is switched on, the difference value between the voltages of the areas in the active phased array antenna is within the set range. The voltage regulator may be a resistor with a corresponding resistance value analyzed based on the above differential pressure control scheme.
To sum up, the embodiments of the present invention provide a voltage difference control method and system, and an active phased array antenna, where the voltage regulators are respectively connected to each region of the active phased array antenna, the voltage regulation values of each region are obtained according to voltage analysis of each region in the active phased array antenna after the power is turned on, and then the voltages of the connected regions are regulated based on each voltage regulator, so that the voltage difference between each region in the active phased array antenna is reduced, the performance of the active phased array antenna is improved, and the method, system, and active phased array antenna are convenient to implement, high in performance-to-price ratio, and suitable for large-scale popularization and application.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for controlling a voltage difference between regions of an active phased array antenna, the regions of the active phased array antenna being respectively connected to a voltage regulator, the method comprising:
acquiring the voltage of each area in the active phased array antenna after the power supply is switched on;
analyzing and obtaining a voltage regulating value of each region according to the voltage of each region;
and adjusting the voltage of the connected region through each voltage regulator according to the analyzed voltage adjustment value of each region so as to reduce the voltage difference between the regions.
2. The differential pressure control method according to claim 1, wherein the analyzing the voltage adjustment value of each of the regions according to the voltage of each of the regions comprises:
calculating a voltage difference between a voltage of a region other than the region to which the reference voltage belongs and the reference voltage by using the lowest voltage among the voltages of the regions as the reference voltage;
and calculating the voltage regulating value of each region according to the differential pressure.
3. The voltage difference control method according to claim 2, wherein the voltage regulator is a resistor, each resistor is connected to a power input terminal of each of the regions in the active phased array antenna, and the calculating the voltage regulation value of each of the regions according to the voltage difference includes:
calculating a resistance value for adjusting the voltage of each region according to the voltage difference and ohm's law, and taking the resistance value as a voltage adjusting value;
the adjusting of the voltage of the connected region by each of the voltage regulators includes:
and setting the resistance value of the resistor connected to each region as the calculated resistance value of the corresponding region so as to regulate the voltage of the connected region to a target voltage, wherein the voltage difference between the target voltage and the reference voltage is within a set range.
4. The differential pressure control method of claim 2, wherein each of the regions of the active phased array antenna comprises at least one radio frequency chip, the method further comprising:
and adjusting the output voltage of the power supply so that the voltage on the radio frequency chip in the area with the lowest voltage in the active phased array antenna reaches the working voltage of the radio frequency chip.
5. The differential pressure control method according to any one of claims 1 to 4, wherein the method further comprises a step of area-dividing the active phased array antenna, the step comprising:
the active phased array antenna is divided into regions according to the distance from a power supply output end, wherein each divided region comprises at least one radio frequency chip, and the distance difference between each radio frequency chip in each divided region and the power supply output end is within a preset range.
6. A differential pressure control system for an active phased array antenna, the differential pressure control system comprising a processor and a plurality of voltage regulators, the plurality of voltage regulators being respectively connected to different areas of the active phased array antenna, the processor being communicatively connected to the plurality of voltage regulators;
the processor is used for obtaining the voltage of each area in the active phased array antenna after the power is switched on, analyzing the voltage of each area according to the voltage of each area to obtain a voltage regulating value of each area, and regulating the voltage of the connected area through each voltage regulator according to the voltage regulating value of each area obtained through analysis to reduce the voltage difference between the areas.
7. The differential pressure control system of claim 6, wherein the processor is configured to analyze the voltage adjustment for each of the zones by:
calculating a voltage difference between a voltage of a region other than the region to which the reference voltage belongs and the reference voltage by using the lowest voltage among the voltages of the regions as the reference voltage;
and calculating the voltage regulating value of each region according to the differential pressure.
8. The differential pressure control system of claim 7, wherein the voltage regulators are resistors, each of the resistors being connected to a power input of each of the zones in the active phased array antenna;
and the processor is used for calculating a resistance value used for adjusting the voltage of each region according to the voltage difference and ohm's law, using the resistance value as a voltage adjusting value, and setting the resistance value of the resistor connected to each region as the calculated resistance value of the corresponding region so as to adjust the voltage of the connected region to a target voltage, wherein the voltage difference between the target voltage and the reference voltage is within a set range.
9. The differential pressure control system of claim 7, wherein each of the regions of the active phased array antenna comprises at least one rf chip, and wherein the processor is further configured to adjust the output voltage of the power supply such that the voltage on the rf chip in the region of the active phased array antenna having the lowest voltage reaches the operating voltage of the rf chip.
10. An active phased array antenna is characterized in that each area of the active phased array antenna is connected with a voltage regulator, and based on the voltage regulators, after power is turned on, the difference value between the voltages of the areas in the active phased array antenna is within a set range.
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