摘要
介绍了超导滤波器在深空站建设中的应用情况,对其技术原理及应用必要性进行了介绍,对功率线性化、高可靠性工艺保障等关键技术攻关进行了分析;并提出了一种二维谐振器和一维谐振器相结合的新颖耐功率超导滤波器设计思路——即超导滤波器的前两级采用二维宽线条结构提升承载功率,其他级采用一维细线条结构,保证多级滤波器物理尺寸可实现性,并进行实验验证。结果表明:设计的20级超导滤波器带外承载功率大于4 W,同时带外抑制大于130dB,所组成的超导接收前端噪声温度仅为8K。该技术已在深空站上成功应用,并在探月二期嫦娥三号测控任务中顺利通过重大工程验证。
The principle and the necessity of application of superconducting filters in deep space stations are introduced. Key technologies including power linearity and high reliability processes are analyzed. The paper proposes an innovative power handling filter design approach featuring a combination of two-dimensional resonators and one-dimensional resonators. Specifically, the first two stages of the HTS （High Temperature Superconductor） filter uses a two-dimensional resonator structure to improve the power handling capacity and the other stages use thin lines to ensure implementation of the HTS filter in size. Test results show that the 20-stage superconducting filter has an out-of-band power level greater than 4 W while the out-of-band rejection is more than la0 dB. The noise temperature of the HTS receiver front-end is only 8 K. The technology has been successfully applied in deep space stations and has been validated through Chang＇e-3 lunar exploration mission.
出处
《飞行器测控学报》
CSCD
2014年第5期382-386,共5页
Journal of Spacecraft TT&C Technology
关键词
超导滤波器
深空测控站
接收灵敏度
超导接收前端
噪声温度
superconducting filters
deep space station
receive sensitivity
superconducting receive frontend
noise temperature
