Microwave characterisation of new magnetic and dielectric structures and materials

该项目的主要目标是表征微波频率下单晶电介质和多晶铁氧体材料的电磁特性，从室温到液氦温度。圆柱形和球形谐振布拉格结构也将使用这些材料中的一些进行研究。介质棒谐振器技术将用于所有材料，回音壁模式技术将用于测量最低损耗材料。非常精确测量的电磁材料的微波参数将提供给新部件和系统的设计者（特别是在低温下工作的设计者）。

The main goal of the project is to characterize electromagnetic properties of single crystal dielectric and polycrystalline ferrite materials at microwave frequencies, from room temperature down to liquid helium temperature. Also cylindrical and spherical resonant Bragg structures will be investigated using some of these materials. The dielectric rod resonator technique will be used for all materials and the whispering gallery mode technique will be used to measure the lowest loss materials. Very accurately measured microwave parameters of electric and magnetic materials will be made available to designers of new components and systems (especially useful for operation at cryogenic temperatures).