CN-121995820-A - Multifunctional microwave measurement and control board card

CN121995820ACN 121995820 ACN121995820 ACN 121995820ACN-121995820-A

Abstract

The application discloses a multifunctional microwave measurement and control board card, and relates to the technical field of microwave measurement and control. The digital processing sub-card comprises a carrier plate, a functional sub-card and a digital processing sub-card, wherein the carrier plate is used as an interconnection platform and is provided with a connecting component and a signal transmission channel, the functional sub-card is detachably connected with the carrier plate through the connecting component and is used for executing conversion between analog signals and digital signals, the digital processing sub-card is detachably connected with the carrier plate through the connecting component and is used for carrying out logic operation on the digital signals, and the functional sub-card is communicated with the channel on the digital processing sub-card overload plate and is mutually independent in physical structure. The application effectively solves the problem of difficult hardware expansion of the existing single-board scheme by the separation architecture of the functional sub-card, the carrier board and the digital processing sub-card, simultaneously reduces the interference of digital noise on microwave analog signals, and improves the signal-to-noise ratio and the closed-loop control precision of the system.

Inventors

Liu Gangyang
ZHU JINFU
DING HONGLI
YANG JIAYUE
ZHANG WEIQING

Assignees

深圳先进光源研究院

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (10)

1. The utility model provides a multi-functional microwave measurement and control board card which characterized in that includes: The support plate is provided with a first connecting component, a second connecting component and a signal transmission channel; The functional sub-card is detachably connected with the carrier plate through the first connecting component and is used for executing conversion between analog signals and digital signals; the digital processing sub-card is detachably connected with the carrier plate through the second connecting component and is used for carrying out logic operation on the digital signals; The function sub-card and the digital processing sub-card are in communication connection through the signal transmission channel, and the function sub-card and the digital processing sub-card are mutually independent.
2. The multi-purpose microwave measurement and control board card of claim 1, wherein the first connection component is an array connector, and the functional daughter card is electrically connected with the carrier board through the array connector.
3. The multi-purpose microwave measurement and control board card of claim 1, wherein the second connection assembly is at least two board-to-board connectors, and the digital processing daughter card is electrically connected to the carrier board through the board-to-board connectors.
4. The multifunctional microwave measurement and control board card of claim 1, wherein, The function sub-card is configured as a digital front-end card or a tuning drive card; When the function sub-card is the digital front-end card, the function sub-card is integrated with an analog-to-digital conversion unit, and the analog-to-digital conversion unit is used for converting an input analog signal into a digital signal and transmitting the digital signal to the carrier plate through the first connecting component; When the function sub-card is the tuning drive card, the function sub-card is integrated with a digital-to-analog conversion unit, and the digital-to-analog conversion unit is used for converting the digital signal of the digital processing sub-card into an analog signal for driving an external piezoelectric ceramic driver or a motor driver.
5. The multifunctional microwave measurement and control board card of claim 4, wherein, When the function sub card is the tuning drive card, the tuning drive card further comprises an optocoupler unit and a level conversion unit; the output end of the optical coupling unit is electrically connected with the input end of the level conversion unit, and the output end of the level conversion unit is electrically connected with the first connecting component; the optical coupling unit and the level conversion unit form a signal isolation transmission channel.
6. The multifunctional microwave measurement and control board card according to claim 5, wherein the tuning drive card further comprises a buffer amplifying unit and a low-pass filtering unit, a first end of the low-pass filtering unit is electrically connected with the digital-to-analog conversion unit, and a second end of the low-pass filtering unit is electrically connected with the buffer amplifying unit; The digital signals are converted into analog signals through the digital-to-analog conversion unit, and the analog signals are processed through the low-pass filtering unit and the buffer amplifying unit and then used for driving an external piezoelectric ceramic driver or motor driver.
7. The multifunctional microwave measurement and control board card of claim 4, wherein when the functional daughter card is a digital front-end card, the digital front-end card further comprises an attenuation unit and a frequency mixing unit, The first end of the frequency mixing unit is electrically connected with the attenuation unit, and the second end of the frequency mixing unit is electrically connected with the analog-to-digital conversion unit; The attenuation unit is used for adjusting the radio frequency signal and outputting an analog signal to the mixing unit; The frequency mixing unit is used for receiving the local oscillation clock signal, and carrying out frequency mixing processing on the analog signal and the local oscillation clock signal so as to output an intermediate frequency analog signal to the analog-to-digital conversion unit.
8. The multifunctional microwave measurement and control board card according to claim 1, wherein an external communication interface component is arranged at the edge of the carrier board, and the external communication interface component is electrically connected with the digital processing sub-card through a wiring on the carrier board and the second connection component.
9. The multifunctional microwave measurement and control board card according to claim 8, wherein the external communication interface component comprises at least one of a high-speed serial bus interface, an optical fiber communication interface and an ethernet interface.
10. The multifunctional microwave measurement and control board card according to claim 9, wherein the external communication interface component comprises a PCIe connector, an SFP optical port or a QSFP optical port; and the PCIe connector, the SFP optical port or the QSFP optical port is connected with the second connecting component through the signal wiring on the carrier board and is used for realizing data interaction between the digital processing sub-card and the upper system.

Description

Multifunctional microwave measurement and control board card Technical Field The application relates to the technical field of microwave measurement and control, in particular to a multifunctional microwave measurement and control board card. Background In the field of particle acceleration, the multifunctional microwave measurement and control board card is core hardware which can be stably controlled by a radio frequency cavity, and has the task of completing high-precision acquisition, digital processing and excitation signal generation of radio frequency signals, so that the electromagnetic field environment of the accelerator is stabilized. In the prior art, a microwave measurement and control board card is generally composed of ‌ digital signal processing board cards ‌ and ‌ radio frequency front end board card ‌, wherein the digital signal processing board card mainly comprises a clock distribution unit, an ADC (analog-to-digital converter) analog-to-digital conversion unit, a DAC (digital-to-analog converter) digital-to-analog conversion unit, an FPGA (field programmable gate array) and a cavity frequency tuning driving unit, the ADC analog-to-digital conversion unit is used for converting an intermediate frequency acquisition analog signal output by the radio frequency front end board card into a digital intermediate frequency signal and sending the digital intermediate frequency signal to the FPGA, the DAC digital-to-analog conversion unit is used for converting an FPGA output excitation signal into an intermediate frequency excitation analog signal and sending the intermediate frequency excitation signal to the radio frequency front end board card, and in order to pursue compact structure and low delay of signal transmission, the digital signal processing unit and the radio frequency front end unit are generally welded on the same printed circuit board in an integrated manner, such as ADC, DAC, FPGA and the driving circuit are welded on the same printed circuit board to form a highly integrated single board architecture. However, the above technical solution has some drawbacks, because the application scenario in the particle acceleration process is changeable, if a higher sampling rate is needed, more channels are needed or different interfaces are needed to be replaced, the digital signal processing board card and the radio frequency front board card of the existing microwave measurement and control board card are located in the same printed circuit board, and cannot be expanded or replaced according to different scenarios, so that different usage scenarios cannot be satisfied. Meanwhile, electromagnetic coupling exists on the same printed circuit board, so that the signal-to-noise ratio of an analog channel is degraded, signal interference and accumulation of synchronization errors are caused, and the closed-loop control precision of the microwave measurement and control board card on the accelerator cavity is affected. Therefore, the application aims to solve the problems that the existing microwave measurement and control board card is fixed in structure, hardware expansion and exchange cannot be carried out aiming at different use scenes, and signal interference and error accumulation are easy to cause on the same printed circuit board. Disclosure of Invention The application mainly aims to provide a multifunctional microwave measurement and control board card, which aims to solve the problems that the framework of the traditional microwave measurement and control board card is fixed, hardware cannot be expanded and exchanged according to different use scenes, and signal interference and error accumulation can be caused on the same printed circuit board. In order to achieve the above purpose, the present application provides a multifunctional microwave measurement and control board card, comprising: The support plate is provided with a first connecting component, a second connecting component and a signal transmission channel; The functional sub-card is detachably connected with the carrier plate through the first connecting component and is used for executing conversion between analog signals and digital signals; the digital processing sub-card is detachably connected with the carrier plate through the second connecting component and is used for carrying out logic operation on the digital signals; The function sub-card and the digital processing sub-card are in communication connection through the signal transmission channel, and the function sub-card and the digital processing sub-card are mutually independent. Further, the first connection component is an array connector, and the functional daughter card is electrically connected with the carrier board through the array connector. Further, the second connection component is at least two board-to-board connectors, and the digital processing daughter card is electrically connected with the carrier board through the board-to-board connector