By taking the rectangular metal patch on a printed circuit board as the radiation element and by cutting a C-shaped slot in the rectangular patch, a frequency band notch is implemented.
该天线采用印刷电路板上的矩形贴片作为辐射单元，通过在矩形贴片上开一个C形槽来实现陷波功能。
This paper designs a S-band feed system for HPM antenna, which consists of a dual-mode conical horn and a rectangular-circular mode convertor.
本文设计了一种S波段高功率微波天线的馈源系统，该系统由双模圆锥喇叭和矩-圆模式转换器两部分组成。
However, when the signal is a circularly band-limited, the minimum sampling density for a hexagonal sampling lattice is 13.4% less than that for a rectangular sampling lattice.
当连续图像信号的频带处于一个圆形区域之内时，正六边形点阵结构的采样密度比矩形点阵结构的采样密度要降低13.4%。
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