高温超导滤波器在电磁抗干扰中的技术和应用

滤波器作为通信系统射频前端的关键部件,其性能举足轻重。在射电天文观测的频段,高温超导薄膜材料的表面电阻比普通金属材料低至少两个数量级，因此，采用高温超导材料能够设计并加工出性能卓越的射频滤波器。特别是射电天文望远镜对电磁抗干扰的实际需求越来越迫切,使得具有电磁抗干扰能力的陷波滤波器的研究备受关注。研究团队长期从事该领域的研究,并已取得一些研究成果。文章从不同谐振器结构类型以及频率特性等方面，介绍了研究团队在该领域的研究和设计工作，以及在射电天文电磁抗干扰中发挥的作用。

Technology and application of high-temperature superconduting filter for radio anti-interference

As a key component of the RF front-end of a communication system, the performance of filters is very important. In the radio Astronomy observation frequency, the surface resistance of the high-temperature superconducting (HTS) thin film material is more than two orders of magnitude lower than that of ordinary metal. Therefore, high-performance filters is designed and fabricated by using HTS material. Because the demand of anti-interference in the radio telescope is more and more urgent, the study of notch-band filters has attracted much attention. The research team has long been engaged in research in notch-band filters and has achieved some research results. This paper introduces the study and design of notch-band filters on different resonator structure types and frequency properties.