Search

CN-116315714-B - Visual digital coding super-surface antenna control circuit

CN116315714BCN 116315714 BCN116315714 BCN 116315714BCN-116315714-B

Abstract

The invention relates to a visual digital coding super-surface antenna control circuit which comprises a core control board, a port driving board and a state indicating board, wherein the core control board is connected with the port driving board in a plug-in mode, and the port driving board is connected with the state indicating board. The invention adopts the core control board to promote the carrying driving capability of the output port of the core control board through the port driving board, and then expands the output port with the carrying capability promoted into a multi-channel output port through the state indicating board, so as to leave an expansion space for constructing a larger-scale digital coding ultra-surface antenna, the core control board transmits an antenna control signal to the antenna through the multi-channel output port so as to control the on-off of a radio frequency switch in the antenna, thereby realizing the digital programming control of the radio frequency switch of the digital coding ultra-surface antenna, and the on-off state of the radio frequency switch is displayed through the state indicating board in a lamp on-off mode, thereby achieving the purpose of visually displaying the real-time state of the phase of each radiating unit.

Inventors

  • ZHANG YING

Assignees

  • 武汉微知晓智科技发展有限公司

Dates

Publication Date
20260512
Application Date
20230412

Claims (6)

  1. 1. The visual digital coding super-surface antenna control circuit is characterized by comprising a core control board, a port driving board and a state indicating board; The core control board is connected with the port driving board in a plug-in mode, and the port driving board is connected with the state indicating board; the core control board is used for interacting wave speed control instructions with the upper computer and transmitting antenna control signals to the state indication board through the port driving board; the port driving plate is used for providing power for the core control plate and improving the carrying capacity of an output port of the core control plate; The state indication board is used for expanding the output port with the load capacity improved into a multipath output port, and transmitting the antenna control signal to an antenna through the multipath output port so as to control the on-off of a radio frequency switch in the antenna; the state indication board is also used for displaying the on-off state of the radio frequency switch in a lamp on-off mode; the port driving plate comprises a nine-core socket; The state indication board comprises a state substrate, a composite interface, an IO expansion chip, a current limiting resistor set, an indicator lamp set and a radio frequency switch connector; The input end of the IO expansion chip is connected with the nine-core socket and the nine-core socket through the composite interface, the power supply end of the IO expansion chip is connected with an external power supply through the composite interface, the output end of the IO expansion chip is connected with the current-limiting resistor set, the current-limiting resistor set is connected with the indicator lamp set, and the indicator lamp set is connected with the matrix type radio frequency switch through the radio frequency switch connector; The current limiting resistor set consists of a preset number of current limiting resistors, one end of each current limiting resistor is connected with the output port of the IO expansion chip, and the other end of each current limiting resistor is connected with the indicator lamp set; The LED indication lamp set consists of the preset number of LED indication lamps, the anodes of the LED indication lamps are connected with the current limiting resistor, the cathodes of the LED indication lamps are connected to the radio frequency switch in the matrix radio frequency switch through the radio frequency switch connector, and the arrangement mode of the LED indication lamps on the state substrate is in a corresponding mirror image relationship with the radio frequency switch.
  2. 2. The visual digital coding subsurface antenna control circuit according to claim 1, wherein the core control board comprises a control substrate, a main control chip, an ethernet port, a memory controller, a flash memory cartridge, and an expansion port; The main control chip, the Ethernet port, the memory controller and the expansion port are all arranged on the control substrate, the flash memory card seat is arranged on the back of the control substrate, the main control chip is respectively connected with the Ethernet port, the memory controller, the flash memory card seat and the expansion port, and the expansion port is connected with the port driving plate; the main control chip is used for carrying out interaction of the wave speed control instruction with the upper computer through the Ethernet port; the main control chip is also used for transmitting the antenna control signal through the expansion port and connecting with a power supply end; the storage controller is used for storing a state mapping table of the radio frequency switch; The flash memory card seat is used for plugging a flash memory card to update and store the image file of the operating system.
  3. 3. The visual digital coded subsurface antenna control circuit as recited in claim 2, wherein the main control chip comprises a processor system unit and a programmable logic unit; The processor system unit is used for realizing a network interface protocol; The programmable logic unit is used for defining the general input/output pin functions of the main control chip through programming.
  4. 4. The visual digital coding subsurface antenna control circuit as claimed in claim 3, wherein the port driver board further comprises a driver substrate, an external power socket and a driver chip; the driving device comprises a driving substrate, a driving chip, a nine-core socket, an external power socket, a control port connector and an external power socket, wherein the external power socket, the driving chip and the nine-core socket are all arranged on the driving substrate, the input end of the driving chip is connected with the expansion port through the control port connector, the output end of the driving chip is connected with the nine-core socket, and the external power socket is respectively connected with the power supply end of the driving chip and the expansion port; the driving chip is used for improving the carrying capacity of the output port of the main control chip; the nine-core socket is used for isolating antenna control signals output by the main control chip through the driving chip.
  5. 5. The visual digital coding super surface antenna control circuit according to claim 4, wherein odd pins of said nine-core socket are all grounded, and even pins are sequentially connected with the output terminal of said driving chip.
  6. 6. The visual digital coded subsurface antenna control circuit as recited in claim 1, wherein the composite interface comprises a power interface and a serial communication interface; The power interface is connected with the power supply end of the IO expansion chip, and the serial communication interface is respectively connected with the input end of the IO expansion chip and the nine-core socket.

Description

Visual digital coding super-surface antenna control circuit Technical Field The invention relates to the technical field of radio frequency circuit control, in particular to a visual digital coding super-surface antenna control circuit. Background The phased array antenna is an array antenna which changes the direction of a directional pattern beam by controlling the feed phase of a radiating unit in the array antenna, and has the most remarkable characteristic of realizing the space scanning of the array beam, and is widely applied to various fields such as military, weather prediction, satellite communication, mobile communication and the like. In recent years, with the rapid development of communication technology, a learner has proposed a phased array antenna based on digital electromagnetic super surface, which is formed by arranging controllable phase radiating elements in a matrix manner into a planar two-dimensional structure, and compared with the traditional phased array antenna, the phased array antenna has a plurality of more outstanding engineering application advantages of thin thickness, yi Gongxing, high beam scanning speed and the like, and has become a novel antenna which is widely focused and intensively studied by researchers in a plurality of fields. Currently, there is a 1-bit digitally encoded super-surface antenna, which integrates a radio frequency switch (PIN diode) on a radiating element, and connects the physical space and the digital space of the super-surface antenna, that is, the element phase responses of '0 °' and '180 °' are defined as digital encoded '0' and '1' states, so that the beam forming and the spatial scanning of the digitally encoded super-surface antenna can be realized. The control circuit of the digital coding super-surface antenna mostly adopts a Field Programmable Gate Array (FPGA) as a main control chip to realize the control of a video switch, adopts a strategy of driving a single radio frequency switch by a single GPIO (general purpose input output interface) of the FPGA, can generate the condition of insufficient interfaces when constructing a large-scale narrow-beam digital coding super-surface antenna array, needs to increase the FPGA chip or adopts more FPGA chips with more interfaces, and cannot intuitively display the actual state of the radio frequency switch by the control mode, thereby being unfavorable for the phase control and final beam forming of a radiation unit. Disclosure of Invention In view of the foregoing, it is necessary to provide a visual digital coding super-surface antenna control circuit for solving the technical problems that the digital coding super-surface antenna control interface is insufficient and the actual state of the radio frequency switch cannot be displayed. In order to solve the problems, the invention provides a visual digital coding super-surface antenna control circuit, which comprises a core control board, a port driving board and a state indicating board; The core control board is connected with the port driving board in a plug-in mode, and the port driving board is connected with the state indicating board; the core control board is used for interacting wave speed control instructions with the upper computer and transmitting antenna control signals to the state indication board through the port driving board; The port driving plate is used for providing power for the core control plate and improving the carrying capacity of the output port of the core control plate; The state indication board is used for expanding the output port with the load capacity improved into a multipath output port, and transmitting the antenna control signal to an antenna through the multipath output port so as to control the on-off of a radio frequency switch in the antenna; The state indicating board is also used for displaying the on-off state of the radio frequency switch in a lamp on-off mode. Optionally, the core control board includes a control substrate, a main control chip, an ethernet port, a memory controller, a flash memory card seat, and an expansion port; The main control chip, the Ethernet port, the memory controller and the expansion port are all arranged on the control substrate, the flash memory card seat is arranged on the back of the control substrate, the main control chip is respectively connected with the Ethernet port, the memory controller, the flash memory card seat and the expansion port, and the expansion port is connected with the port driving plate; the main control chip is used for carrying out interaction of the wave speed control instruction with the upper computer through the Ethernet port; the main control chip is also used for transmitting the antenna control signal through the expansion port and connecting with a power supply end; the storage controller is used for storing a state mapping table of the radio frequency switch; The flash memory card seat is used for plugging a flash memory card to upd