Data transmission method of row-column matrix wave control system based on parallel spi bus
A technology of SPI bus and system data, which is applied to antenna arrays, transmission systems, antennas suitable for movable objects, etc., can solve the problem that data transmission cannot be controlled by grouping of phased array TR components, and achieve optimal update time/ The effect of resource occupation ratio, reducing design difficulty and improving utilization rate
Active Publication Date: 2021-04-13
XIAN INSTITUE OF SPACE RADIO TECH
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[0004] The above two methods do not involve the use of the principle of matrix row and column to locate the radio frequency channel and use the parallel packet SPI bus for control, and cannot be used for group control data transmission of phased array TR components
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[0027] The biggest difference from the design of the current conventional wave control system is that the present invention adopts a matrix time-sharing and point-by-point scanning method, which can greatly reduce the internal wiring of the phased array antenna while controlling each TR component, and adopts The standardized row and column structure effectively reduces the difficulty of the electrical design of the wave controller.
[0028] Its realization principle is:
[0029] Use FPGA to construct time-sharing m groups of parallel n-way SPI time-sharing buses for data distribution, and use k-way latch signals for sub-regional control latching to realize radio frequency for phased array antennas with maximum (m×n)×k units Channel control, the number of controllable channels is allowed to be greater than the actual number of channels that need to be controlled, forming a certain control redundancy.
[0030] The bus for data transmission of the phased array antenna wave contr...
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A data transmission method for a row-column matrix wave control system based on a parallel SPI bus, which uses an n-channel parallel SPI bus and a time-sharing m-group working mode, wherein m-channel clock signals are grouped signals, and n-channel data passes through m groups of grouped signals. Time-sharing operation controls the phase shifter and (or) attenuator of the m×n radio frequency channels of the phased array antenna sub-array, uses the k-channel latch signal to perform regional latch control, and latches the m×n-channel control data each time, The k-way latch can complete (m×n)×k-way phased array element radio frequency channel control data latching, realizing the control of large-scale array element phased array with less control signals. The method of the present invention can effectively control the data update of the phased array antenna TR component, and has an optimal update time / resource occupation ratio, and can be well adapted from an ultra-high-speed switching phased array antenna that requires a high data refresh rate to Application of communication slow-scan phased array antenna with low resource utilization as the main purpose.
Description
technical field [0001] The invention belongs to the field of satellite phased array antenna wave control design, and relates to a data transmission method of a satellite phased array antenna wave control system, which can effectively reduce the design complexity and design difficulty of the phased array antenna wave control system. Background technique [0002] At present, due to the small number of array elements of spaceborne phased array antennas, the wave control design of conventional spaceborne phased array antennas mostly uses the same number of SPI buses as the number of array elements or directly controls the RF channel through a parallel bus with lockable output. Phase shifters and (or) attenuators can be used to control the pointing of phased array antennas, and there is no need for matrix control involving complex group allocation of array elements and row and column selection. [0003] From available public documents, Wuhan Engineering University master's degree...
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IPC IPC(8): H04B1/401H01Q21/00H01Q3/34H01Q1/28
CPCH01Q1/288H01Q3/34H01Q21/00H04B1/401
Inventor 李竹君张宏谋吕鹏庞洁李若昕
Owner XIAN INSTITUE OF SPACE RADIO TECH