For large diameter radio telescope construction,it is essential to suppress radio frequency interference from various equipment.Considering that some electronic devices have extremely high electromagnetic compatibilit...For large diameter radio telescope construction,it is essential to suppress radio frequency interference from various equipment.Considering that some electronic devices have extremely high electromagnetic compatibility(EMC)requirements and are characterized by compact size and high integration,their EMC control poses significant technical challenges.To address these issues,this paper investigated the technical challenges involved in the EMC control process and performance measurement of small electronic devices.Based on the electromagnetic leakage mechanism of shielding protection and drawing upon engineering experience,a solution was proposed to replace the original shielding enclosure with an interface conversion board,and the window testing method was employed to measure the shielding effectiveness,resolving the technical issue of measuring the shielding performance of small-scale shielding enclosures.Furthermore,this methodology was applied to the EMC control process of actuators,such as EMC design,performance measurement,and optimization,which successfully addressed the EMC issues.The proposed method has further upgraded the EMC control process for large radio telescopes,effectively solving the EMC challenges posed by small electronic devices during the construction and operation of the telescope.展开更多
基金supported by the National Key Research and Development Program of China(grant No.2021YFC2203503)the Tianshan Talent Training Program(grant No.2023TSYCCX0042)+1 种基金the Scientific Instrument Developing Project of the Chinese Academy of Sciences(grant No.PTYQ2022YZZD01)Open Foundation of China-Belarus Belt and Road Joint Laboratory on Electromagnetic Environment Effect(grant No.2BKF2024031001)。
文摘For large diameter radio telescope construction,it is essential to suppress radio frequency interference from various equipment.Considering that some electronic devices have extremely high electromagnetic compatibility(EMC)requirements and are characterized by compact size and high integration,their EMC control poses significant technical challenges.To address these issues,this paper investigated the technical challenges involved in the EMC control process and performance measurement of small electronic devices.Based on the electromagnetic leakage mechanism of shielding protection and drawing upon engineering experience,a solution was proposed to replace the original shielding enclosure with an interface conversion board,and the window testing method was employed to measure the shielding effectiveness,resolving the technical issue of measuring the shielding performance of small-scale shielding enclosures.Furthermore,this methodology was applied to the EMC control process of actuators,such as EMC design,performance measurement,and optimization,which successfully addressed the EMC issues.The proposed method has further upgraded the EMC control process for large radio telescopes,effectively solving the EMC challenges posed by small electronic devices during the construction and operation of the telescope.
