Study on antenna systems for ubiquitous space network

未来天线系统中的先进无线电波技术已经被研究，以实现泛在的空间网络。首先，提出了基于耦合谐振滤波特性的反射阵列天线和传输平面阵列天线的宽带阵元作为下一代口径天线。此外，还提出了波束赋形、低交叉极化的多模喇叭的优化设计方法，作为一种高性能馈源。此外，为了准确评估这种天线和馈电的性能，利用平面扫描近场测量系统研究了基本的测量技术。

Advanced radio-wave techniques in future antenna systems have been studied for achieving ubiquitous space network. First, broad-band array-elements for reflectarray antennas and transmission planar-array antennas using filter property based on coupled resonances have been proposed as next-generation aperture antennas. And also, optimization design approach for multimode horns with shaped beam and low cross-polarization components have been developed as a high-performance feed. Besides, for accurately evaluating the performance of such antennas and feeds, fundamental measurement techniques have been studied by using planar scanning near-field measurement systems.