CN114006177B - Array structure of phased array antenna module, control method and electronic equipment - Google Patents
Array structure of phased array antenna module, control method and electronic equipment Download PDFInfo
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- CN114006177B CN114006177B CN202111643665.0A CN202111643665A CN114006177B CN 114006177 B CN114006177 B CN 114006177B CN 202111643665 A CN202111643665 A CN 202111643665A CN 114006177 B CN114006177 B CN 114006177B
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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
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
Abstract
The invention discloses an array structure, a control method and electronic equipment of a phased array antenna module, which are characterized by comprising subarrays, a digital logic circuit and a radio frequency integrated circuit device; the method includes optimizing a sub-array, receiving a first main operand; taking the first main operand as the base phase shift of the subarray corresponding to the local register; receiving a first secondary operand and a second secondary operand; determining a phase weighting and an amplitude weighting for each antenna element; the antenna elements are controlled by phase shifters to shift the beam pointing direction to the R region. The phased array antenna module is divided into a plurality of sub-arrays, the sub-arrays are connected with the radio frequency integrated circuit device through the digital logic circuit, the use of a phase shifter is reduced, and when the array structure is controlled, the antenna phase shift and the amplitude weight of each antenna element can be determined through operation in the digital logic circuit only by inputting a small number of operands.
Description
Technical Field
The invention relates to the field of phased array antennas, in particular to an array structure of a phased array antenna module, a control method and electronic equipment.
Background
A phased array antenna refers to an antenna that changes a pattern shape by controlling a feeding phase of a radiation element in an 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 side lobe level, the minimum position, and the shape of the entire directional pattern may be controlled, for example, a cosecant square directional pattern may be obtained, and the directional pattern may be adaptively controlled. When the antenna is rotated by a mechanical method, the inertia is large, the speed is slow, the phased array antenna overcomes the defect, and the scanning speed of the wave beam is high. Its feeding phase is controlled by computer, and its phase change speed is quick (millisecond order), i.e. the maximum directivity of antenna pattern or other parameters can be quickly changed.
The conventional antenna beam direction controls the movement of the beam by controlling the phase shift of each antenna element in the array, and if the number of antenna elements in a phased array antenna module is large, a large number of operations are required to be received at the same time to realize adjustment, and a large number of phase shifters are required to be configured for each antenna element, thereby possibly reducing the update rate of the antenna elements.
Disclosure of Invention
The technical problem to be solved by the present invention is to receive a large number of operands simultaneously to realize adjustment, and to configure a large number of phase shifters for each antenna element, and to provide an array structure, a control method, and an electronic device of a phased array antenna module, which solve the problem of partition control of the phased array antenna module.
The invention is realized by the following technical scheme:
an array structure of a phased array antenna module, comprising:
a sub-array having a digital interface, the sub-array comprising a plurality of antenna elements, a phase shifter connected to the antenna elements;
a digital logic circuit including a serial bus and an on-chip bus, the on-chip bus connecting the plurality of sub-arrays;
and a radio frequency integrated circuit device connected to the on-chip bus through the serial bus, the radio frequency integrated circuit device including a plurality of local registers and a general purpose register, the plurality of local registers being respectively connected to the plurality of phase shifters and controlling the antenna elements through the phase shifters, the general purpose register being connected to the serial bus and controlling the radio frequency integrated circuit device.
A method for controlling an array of a phased array antenna module, based on the above-mentioned array structure of a phased array antenna module, the method comprising:
receiving a first main operand and storing the first main operand to a local register, wherein the local register is one of the local registers correspondingly connected with the subarray;
shifting the first main operand as a base of the sub-array corresponding to the local register;
receiving a first secondary operand and a second secondary operand;
determining a phase weighting and an amplitude weighting for each antenna element;
controlling the antenna element to change the beam direction through a phase shifter, and pointing to an R region;
determining that antenna elements of the sub-array are to point to the R +1 region;
setting conditions: whether the R +1 region is sufficiently covered by a set of phase weights associated with beam steering of each antenna element in the R region, wherein the phase weights are calculated using the element index and the sub-array index;
and if the condition is negative, transmitting an operand for loading the phase weight from the position corresponding to the R area to the sub-array, and if the condition is positive, updating the R area to the R +1 area and determining that the antenna elements of the sub-array point to the R +1 area.
Specifically, the method for optimizing the partition of the sub-array comprises the following steps:
mapping the phased array antenna module into a chromosomal code that can be computed by a genetic algorithm, the mapping method comprising: expressing the initial positions of the central antenna elements of the plurality of sub-arrays by using a random binary string coded chromosome, and referring to the initial positions as a central chromosome, wherein the central chromosome provides information of the central antenna elements; the sub-array around the central antenna element is a surrounding chromosome that provides information including whether the antenna elements around the central antenna element are located within the sub-array;
determining constraint conditions for sub-array division;
randomly generating a central chromosome and peripheral chromosomes, and judging whether constraint conditions are met;
acquiring sidelobe levels and fitness values of directional diagrams corresponding to the sub-arrays, and acquiring optimal values and average values of the sidelobe levels;
calculating an adaptive crossover operator, wherein the formula is as follows:
of formula (II) to (III)'cA crossover operator which is adaptively changed along with the side lobe level value of the directional diagram;
fAvethe average value of the sidelobe level of a certain generation of directional diagram;
fOptthe optimal value of the side lobe level of the directional diagram is obtained;
respectively carrying out selection, crossing and mutation operations on the central chromosome and the peripheral chromosomes by using a self-adaptive crossover operator to generate new chromosomes;
judging whether the sidelobe level and the fitness value of the directional diagram corresponding to the new chromosome meet the design requirements or not, and if so, obtaining the optimal sub-array division; if not, repeating the previous step.
Specifically, the method for determining the phase weight and the amplitude weight of each antenna element comprises the following steps:
multiplying the first secondary operand by an index and adding to the base phase shifts in turn to determine a first vector of phase weights for each of a plurality of phase shifters;
multiplying the second operand by an index and adding to the first vector in sequence to determine the phase weighting of all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
As one embodiment, the method for determining the phase weight and the amplitude weight of each antenna element includes:
receiving a second primary operand;
multiplying the first and second main operands by an index to determine a base phase shift for each sub-array according to a configuration of each sub-array;
adding phase shift error correction for a plurality of said antenna elements in a plurality of said sub-arrays;
adding the first sub-operand to the base phase shift of each sub-array to determine a first vector of each phase weight of a plurality of phase shifters;
sequentially adding the second operand to the first vector to determine phase weights for all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
As one embodiment, the method for determining the phase weight and the amplitude weight of each antenna element includes:
recursively adding a first sub-operand to the base phase shift to determine a first vector of phase weights for each of the plurality of phase shifters;
recursively multiplying the second operand by the index and adding to the first vector in turn to determine phase weights for all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
As one embodiment, the method for determining the phase weight and the amplitude weight of each antenna element includes:
receiving a second primary operand;
recursively adding a second main operand to the first main operand to determine a base phase shift for each sub-array according to a configuration of each sub-array;
adding phase shift error correction for a plurality of said antenna elements in a plurality of said sub-arrays;
adding the first sub-operand to the base phase shift of each sub-array to determine a first vector of each phase weight of a plurality of phase shifters;
sequentially adding the second operand to the first vector to determine phase weights for all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
A data processing method for an array structure of a phased array antenna module, based on the array structure of the phased array antenna module, the method comprising:
initializing a local register having an integer pair value and a common register having an integer pair value;
reading four binary-coded phase shift increment values from a serial bus;
storing the four binary-coded phase shift increment values to a common register;
reading two phase shift increment values corresponding to each phase shift increment of the subarray in a common register; reading two phase shift increment values corresponding to each phase shift increment of the antenna elements in a common register;
reading the integer pair values and phase correction factors of the subarray relative to the common register;
an integer pair of values is read from a local register that corresponds to setting the coordinate position of the antenna elements on the radiating surface of the sub-array at the phased array antenna.
In particular, the initializing a local register having an integer pair value and a common register having an integer pair value comprises in particular the following method:
writing m integer pair values to a common register, wherein m corresponds to a coordinate position of each subarray;
writing n integer pair values to a local register, wherein n corresponds to a coordinate position of each antenna element on a radiating surface of the sub-array;
binary encoded values in the range of 4 to 64 bits are written into local registers for phase correction factors due to unequal track lengths.
An electronic device, comprising: at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the steps of the control method described above.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the phased array antenna module is divided into a plurality of sub-arrays, the sub-arrays are connected with the radio frequency integrated circuit device through the digital logic circuit, the use of phase shifters is reduced, and when the array structure is controlled, only a small number of operands need to be input, and the phase weighting and the amplitude weighting of each antenna element can be determined through operation in the digital logic circuit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of an array structure of a phased array antenna module according to the present invention.
Fig. 2 is a schematic diagram of a method for controlling an array structure of a phased array antenna module according to the present invention.
Fig. 3 is a flow chart illustrating a method of optimizing partitioning of a sub-array according to the present invention.
Fig. 4 is a flow chart of a data processing method of an array structure of a phased array antenna module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention.
It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
In the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
As shown in fig. 1, the present embodiment provides an array structure of a phased array antenna module, characterized by including sub-arrays, a digital logic circuit, and a radio frequency integrated circuit device (RFIC).
A sub-array having a digital interface, the sub-array including a plurality of antenna elements 2 and a phase shifter 1 connected to the antenna elements 2;
the connection between the antenna elements 2 and the phase shifters 1 is understood by those skilled in the art, and in this embodiment, four antenna elements 2 in one sub-array are configured with one phase shifter 1, and in general, the phase control scheme will transmit the minimum amount of phase control information to the sub-array.
The digital logic circuit includes a serial bus 5 and an on-chip bus 4, the on-chip bus 4 connects the plurality of sub-arrays, and the control signal and the beam signal are input to the phase shifter 1 through the on-chip bus 4.
The serial bus 5 is used to propagate phase shift control information. The serial bus 5 has the advantages of simplicity, reduced size, routing and cost compared to a conventional parallel bus, and is somewhat more prominent for phased array antennas with a large number of antenna elements 2, minimizing phase shift control of the transmission by the cooperation of the sub-arrays and digital logic circuits, and minimizing the distribution of information can greatly reduce the speed and cost of the bus.
The radio frequency integrated circuit device is connected to the on-chip bus 4 by a serial bus 5, and registers in the radio frequency integrated circuit device are grouped into a plurality of local registers 3 and general purpose registers 6.
The local register 3 corresponds to and is connected to the plurality of phase shifters 1, respectively, and controls the antenna element 2 through the phase shifter 1;
the local register 3 for each antenna element 2 of the phased array antenna contains a phase shift value and a gain equalization value. The antenna element 2 receives information of address, position, etc. in the local register 3 to determine the beam direction of the antenna element 2.
These phase shift values may be preloaded by the phase shifter 1 and gained from the equalizer values for the beam direction indicated by the propagation index. Alternatively, the digital functional logic for each antenna element 2 may dynamically determine the required phase shift by receiving the phase increment for each antenna element 2.
And only as an example configuration in fig. 1, the configuration of the antenna elements 2 constituting the sub-array and the distribution and connection of the antenna elements in a practical configuration can be adjusted according to the third embodiment.
Example two
The present embodiment is a control method for an array structure of a phased array antenna module in the first embodiment, and the control method for an array of a phased array antenna module, as shown in fig. 1, includes:
that is, before control is performed, it is necessary to initialize the position of each antenna element in the phased array antenna module, and set a corresponding phase correction factor according to actual conditions, where the phase correction factor is used to correct errors caused by unequal lengths of radio frequency traces of different antenna elements, and is used to compensate for time delay introduced by the unequal trace lengths, and the phase correction factor is proportional to the center frequency of a signal, and can be understood and calculated by those skilled in the art.
Optimizing the division of the subarray to obtain the optimal subarray division of the phased array antenna module;
receiving a first main operand, storing the first main operand to a local register, wherein the local register is one of the sub-arrays correspondingly connected with the sub-arrays, and taking the first main operand as the base phase shift of the sub-array corresponding to the local register;
the base phase shift of the plurality of sub-arrays is determined by receiving the first main operand, i.e. all sub-arrays receiving the first main operand are phase shifted according to the phase shift control information.
Receiving a first secondary operand and a second secondary operand;
multiplying the first secondary operand by the index and adding to the base phase shift in turn to determine a first vector of phase weights for each of the plurality of phase shifters;
different subarrays have different index parameters in the index table, and a person skilled in the art can preset in advance according to the situation of the subarrays, multiply the first operand by the index, and add the first operand to the base phase shift, so as to obtain a first vector of the phase shifter corresponding to each subarray.
Multiplying the second operand by the index and adding to the first vector in turn to determine the phase weighting for all phase shifters;
different antenna elements have different index parameters in the index table, the second operand is multiplied by the index and added to the first vector, so that the phase weighting of different antenna elements in the same sub-array can be obtained, and the antenna elements are respectively corresponding to the antenna elements through phase shifters.
Determining a phase weight and an amplitude weight for each antenna element based on the first vector and the phase weights of all phase shifters;
the antenna elements are controlled by phase shifters to change the beam direction and point to the R region.
The phase shifter reads the corresponding phase and amplitude weights from the local register so that the antenna element can change the beam direction and can then point it to the R region where it is desired to point.
After the R region is pointed again, if the beam direction of the phased array antenna needs to be changed, it can be performed by the following method,
determining that antenna elements of the sub-array are to point to the R +1 region;
setting conditions: whether the R +1 region is sufficiently covered by a set of phase weights associated with the beam direction of each antenna element in the R region, wherein the phase weights are calculated using the element index and the sub-array index;
and if the condition is negative, transmitting an operand for loading the phase weight from the position corresponding to the R area to the sub-array, and if the condition is positive, updating the R area to the R +1 area and determining that the antenna elements of the sub-array point to the R +1 area.
Whether the wave beam of the antenna element covers the R +1 area or not is judged through the phase weight, if the relevant area is not covered, the operand corresponding to the R +1 area is sent to the digital logic circuit and the radio frequency integrated circuit device, and the phase shift of the sub-array is realized through the cooperation of the operand and the digital logic circuit and the radio frequency integrated circuit device.
If the R region covers the R +1 region, then it is proved that the sub-array does not need to be moved, at which point the data associated with the R region is updated to a value "will point to the R +1 region", and then the step "determines that the antenna elements of the sub-array will point to the R +1 region" is performed.
EXAMPLE III
In phased array antenna modules, the sub-array has a significant impact on system performance. It is an important objection to optimally sub-array partition a phased array antenna module. However, in the case of a phased array antenna module with a certain complexity (fixed number of antenna elements and sub-arrays), an optimal division is required, and this embodiment provides a method, as shown in fig. 3.
The method in the embodiment utilizes a genetic algorithm, is an efficient evolution search method based on Darwin evolution theory, and is used for reserving good individuals from a parent population and eliminating poor individuals. It is continually optimized for the individual through selection, crossover, mutation, etc., and can be understood and implemented by those skilled in the art using existing techniques.
Mapping the phased array antenna module into a chromosomal code that can be computed by a genetic algorithm, the mapping method comprising: expressing the initial positions of the central antenna elements of the plurality of sub-arrays by using a random binary string coded chromosome, and referring to the initial positions as a central chromosome, wherein the central chromosome provides information of the central antenna elements; the sub-array around the central antenna element is a surrounding chromosome that provides information including whether the antenna elements around the central antenna element are located within the sub-array;
the center coding method adopted in this embodiment is to randomly select a central antenna element of a sub-array and set it as a center chromosome, and the center chromosome contains the position information of all the central antenna elements when decoding.
Determining constraint conditions for sub-array division; those skilled in the art can set the setting according to the actual situation, and in this embodiment, the setting is as follows: all antenna elements after decoding are within the effective range of the phased array antenna module (out of range of decoded antenna elements may occur because the center antenna element is randomly set); all antenna elements in the same sub-array are adjacent; there is no overlapping portion of each sub-array; all antenna elements are divided into sub-arrays.
Randomly generating a central chromosome and peripheral chromosomes, and judging whether constraint conditions are met;
the side lobe level and the fitness value of the directional diagram corresponding to the sub-array are obtained, and the optimal value and the average value of the side lobe level are obtained, and the parameters of the side lobe level, the fitness value and the like of the directional diagram in the step can be obtained according to the existing technology by those skilled in the art, and are not described in detail in this embodiment.
The most relevant parameter in genetic algorithms to convergence speed is the crossover operator, whose role is to combine the valuable information in the crossover of two individuals to generate new offspring individuals, making the population evolve towards the direction of optimization. In this embodiment, a conventional genetic algorithm is improved, a crossover operator set as a constant in the conventional algorithm is modified into a crossover operator adaptively changing with a target function value, and is called as an adaptive crossover operator, and the adaptive crossover operator is calculated according to the following formula:
of formula (II) to (III)'cA crossover operator which is adaptively changed along with the side lobe level value of the directional diagram;
fAvethe average value of the sidelobe level of a certain generation of directional diagram;
fOptthe optimal value of the side lobe level of the directional diagram is obtained;
respectively carrying out selection, crossing and mutation operations on the central chromosome and the peripheral chromosomes by using a self-adaptive crossover operator to generate new chromosomes;
judging whether the sidelobe level and the fitness value of the directional diagram corresponding to the new chromosome meet the design requirements or not, and if so, obtaining the optimal sub-array division; if not, repeating the previous step.
Example four
This embodiment is another control method for the second embodiment, and 4 operands are input in this embodiment.
Receiving a first primary operand and a second primary operand;
multiplying the first and second main operands by the index to determine a base phase shift for each sub-array according to the configuration of each sub-array;
the advantage of this embodiment with respect to embodiment two is that the base phase shift of each sub-array is determined by the first and second main operands and in cooperation with the index table of the sub-array.
Receiving a first secondary operand and a second secondary operand;
adding phase shift error correction for a plurality of antenna elements in a plurality of sub-arrays;
adding a first sub-operand to the base phase shift of each sub-array to determine a first vector of each phase weight of the plurality of phase shifters;
adding the second operand to the first vector in turn to determine the phase weights of all the phase shifters;
since the first and second main operands are already operated on with the index in the determination of the base phase shift, they are not required to be operated on with the index when the first and second operands are used.
A phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
The antenna elements are controlled by phase shifters to change the beam direction and point to the R region.
EXAMPLE five
The present embodiment is directed to the second and third embodiments, and both the second and third embodiments use an index table, and the present embodiment implements determination of each antenna element by recursive operation.
Receiving a first main operand, and storing the first main operand to a local register, wherein the local register is one of the local registers correspondingly connected with the subarray; taking the first main operand as the base phase shift of the subarray corresponding to the local register;
receiving a first secondary operand and a second secondary operand;
recursively adding a first sub-operand to the base phase shift to determine a first vector of phase weights for each of the plurality of phase shifters;
each sub-array has determined its own base phase shift and then recursively adds the first operand to the base phase shift through a recursive adder to determine a first vector of phase weightings for the phase shifters and store the result.
Recursively multiplying the second operand by the index and adding to the first vector in turn to determine the phase weights of all phase shifters;
a first vector of phase weights for each phase shifter has been determined and then a second operand is recursively multiplied by the first vector through a recursive multiplier to determine the phase weight for each phase shifter.
A phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
The antenna elements are controlled by phase shifters to change the beam direction and point to the R region.
EXAMPLE six
This embodiment is another control method for the fourth embodiment, and 4 operands are received in this embodiment.
Receiving a first primary operand and a second primary operand;
recursively adding a second main operand to the first main operand to determine a base phase shift for each sub-array according to a configuration of each sub-array; adding phase shift error correction (which is determined by a phase error factor) to a plurality of antenna elements in a plurality of sub-arrays;
receiving a first secondary operand and a second secondary operand;
adding a first sub-operand to the base phase shift of each sub-array to determine a first vector of each phase weight of the plurality of phase shifters;
adding the second operand to the first vector in turn to determine the phase weights of all the phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
The antenna elements are controlled by phase shifters to change the beam direction and point to the R region.
EXAMPLE seven
The present embodiment provides a data processing method for an array of phased array antenna modules, as shown in fig. 4.
Initializing a local register having an integer pair value and a common register having an integer pair value;
the specific initialization method comprises the following steps: writing m integer pair values to a common register, wherein m corresponds to a coordinate position of each subarray;
writing n integer pair values to a local register, wherein n corresponds to a coordinate position of each antenna element on a radiating surface of the sub-array;
the specific position of the antenna element in the phased array antenna can be accurately determined by m and n.
Binary encoded values in the range of 4 to 64 bits are written into local registers for phase correction factors due to unequal track lengths.
And reading four binary-coded phase shift increment values from the serial bus, wherein the 4 binary-coded phase shift increment values are a first main operand, a second main operand, a first secondary operand and a second secondary operand.
The four binary-coded phase shift increment values are stored to and in a common register.
Two phase shift increment values, namely a first main operand and a second main operand, corresponding to each phase shift increment of the subarray are read in a common register and correspond to the coordinate position of each subarray in m.
The two phase shift increment values, i.e., the first time operand and the second time operand, corresponding to each phase shift increment of the antenna element are read in a common register. And corresponds to the coordinate position of each antenna element in n.
Reading the integer pair values and phase correction factors of the subarray relative to the common register;
an integer pair of values is read from a local register that corresponds to setting the coordinate position of the antenna elements on the radiating surface of the sub-array at the phased array antenna.
The integer pair values corresponding to the four phase shift increment values are multiplied by the phase correction factor, and then the multiplied values are added, i.e. it is the calculation process of the primary operand and the secondary operand in the above embodiment.
And outputs the electrical signal based on the calculated phase weighting and amplitude weighting.
Example eight
An electronic device, comprising: at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the steps of the control method as described above.
The memory may be used to store software programs and modules, and the processor may execute various functional applications of the terminal and data processing by operating the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an execution program required for at least one function, and the like.
The storage data area may store data created according to the use of the terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
A computer-readable storage medium, in which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method for testing an antenna interface unit.
Without loss of generality, computer readable media may comprise computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instruction data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM, EEPROM, flash memory or other solid state storage technology, CD-ROM, DVD, or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that computer storage media is not limited to the foregoing. The system memory and mass storage devices described above may be collectively referred to as memory.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other variations or modifications may be made on the above invention and still be within the scope of the invention.
Claims (9)
1. A method of controlling an array of phased array antenna modules, for controlling an array structure of a phased array antenna module, the array structure comprising:
a sub-array having a digital interface, the sub-array comprising a plurality of antenna elements, a phase shifter connected to the antenna elements;
a digital logic circuit including a serial bus and an on-chip bus, the on-chip bus connecting the plurality of sub-arrays;
a radio frequency integrated circuit device connected to the on-chip bus via the serial bus, the radio frequency integrated circuit device including a plurality of local registers and a general purpose register, the plurality of local registers being respectively connected to the plurality of phase shifters and controlling the antenna elements via the phase shifters, the general purpose register being connected to the serial bus and controlling the radio frequency integrated circuit device;
the control method comprises the following steps:
optimizing the division of the subarray to obtain the optimal subarray division of the phased array antenna module;
receiving a first main operand and storing the first main operand to a local register, wherein the local register is one of the local registers correspondingly connected with the subarray;
shifting the first main operand as a base of the sub-array corresponding to the local register;
receiving a first secondary operand and a second secondary operand;
determining a phase weighting and an amplitude weighting for each antenna element;
controlling the antenna element to change the beam direction through a phase shifter, and pointing to an R region;
determining that antenna elements of the sub-array are to point to the R +1 region;
setting conditions: whether the R +1 region is sufficiently covered by a set of phase weights associated with beam steering of each antenna element in the R region, wherein the phase weights are calculated using the element index and the sub-array index;
and if the condition is negative, transmitting an operand for loading the phase weight from the position corresponding to the R area to the sub-array, and if the condition is positive, updating the R area to the R +1 area and determining that the antenna elements of the sub-array point to the R +1 area.
2. The method of claim 1, wherein the method of optimizing the partitioning of the sub-arrays comprises:
mapping the phased array antenna module into a chromosomal code that can be computed by a genetic algorithm, the mapping method comprising: expressing the initial positions of the central antenna elements of the plurality of sub-arrays by using a random binary string coded chromosome, and referring to the initial positions as a central chromosome, wherein the central chromosome provides information of the central antenna elements; the sub-array around the central antenna element is a surrounding chromosome that provides information including whether the antenna elements around the central antenna element are located within the sub-array;
determining constraint conditions for sub-array division;
randomly generating a central chromosome and peripheral chromosomes, and judging whether constraint conditions are met;
acquiring sidelobe levels and fitness values of directional diagrams corresponding to the sub-arrays, and acquiring optimal values and average values of the sidelobe levels;
calculating an adaptive crossover operator, wherein the formula is as follows:
of formula (II) to (III)'cA crossover operator which is adaptively changed along with the side lobe level value of the directional diagram;
fAvethe average value of the sidelobe level of a certain generation of directional diagram;
fOptthe optimal value of the side lobe level of the directional diagram is obtained;
respectively carrying out selection, crossing and mutation operations on the central chromosome and the peripheral chromosomes by using a self-adaptive crossover operator to generate new chromosomes;
judging whether the sidelobe level and the fitness value of the directional diagram corresponding to the new chromosome meet the design requirements or not, and if so, obtaining the optimal sub-array division; if not, repeating the previous step.
3. The method of claim 2, wherein the method of determining the phase and amplitude weighting of each antenna element comprises:
multiplying the first secondary operand by an index and adding to the base phase shifts in turn to determine a first vector of phase weights for each of a plurality of phase shifters;
multiplying the second operand by an index and adding to the first vector in sequence to determine the phase weighting of all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
4. The method of claim 2, wherein the method of determining the phase and amplitude weighting of each antenna element comprises:
receiving a second primary operand;
multiplying the first and second main operands by an index to determine a base phase shift for each sub-array according to a configuration of each sub-array;
adding phase shift error correction for a plurality of said antenna elements in a plurality of said sub-arrays;
adding the first sub-operand to the base phase shift of each sub-array to determine a first vector of each phase weight of a plurality of phase shifters;
sequentially adding the second operand to the first vector to determine phase weights for all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
5. The method of claim 2, wherein the method of determining the phase and amplitude weighting of each antenna element comprises:
recursively adding a first sub-operand to the base phase shift to determine a first vector of phase weights for each of the plurality of phase shifters;
recursively multiplying the second operand by the index and adding to the first vector in turn to determine phase weights for all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
6. The method of claim 2, wherein the method of determining the phase and amplitude weighting of each antenna element comprises:
receiving a second primary operand;
recursively adding a second main operand to the first main operand to determine a base phase shift for each sub-array according to a configuration of each sub-array;
adding phase shift error correction for a plurality of said antenna elements in a plurality of said sub-arrays;
adding the first sub-operand to the base phase shift of each sub-array to determine a first vector of each phase weight of a plurality of phase shifters;
sequentially adding the second operand to the first vector to determine phase weights for all phase shifters;
a phase weighting and an amplitude weighting for each antenna element is determined based on the first vector and the phase weightings of all the phase shifters.
7. A data processing method of an array structure of a phased array antenna module, based on a control method of an array of a phased array antenna module according to claim 1, the method comprising:
initializing a local register having an integer pair value and a common register having an integer pair value;
reading four binary-coded phase shift increment values from a serial bus;
storing the four binary-coded phase shift increment values to a common register;
reading two phase shift increment values corresponding to each phase shift increment of the subarray in a common register; reading two phase shift increment values corresponding to each phase shift increment of the antenna elements in a common register;
reading the integer pair values and phase correction factors of the subarray relative to the common register;
an integer pair of values is read from a local register that corresponds to setting the coordinate position of the antenna elements on the radiating surface of the sub-array at the phased array antenna.
8. The method of claim 7, wherein initializing the local register having an integer pair value and the common register having an integer pair value comprises:
writing m integer pair values to a common register, wherein m corresponds to a coordinate position of each subarray;
writing n integer pair values to a local register, wherein n corresponds to a coordinate position of each antenna element on a radiating surface of the sub-array;
binary encoded values in the range of 4 to 64 bits are written into local registers for phase correction factors due to unequal track lengths.
9. An electronic device, comprising: at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the steps of the control method of any one of claims 1-6.
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