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。

youdao

Two examples of application to the clamped circular bent plate and the rectangular bent plate with edge notch are given.

文中还给出了周边固定圆板和带缺口的方板两个应用实例。

youdao

Both devices combine top-notch specs with beautiful industrial design -- pure rectangular forms with a mirror-like finish packaged in thin, light and water-resistant shells.

ENGADGET

The new look retains Apple's simple rectangular style, but still makes room for a low-key notch on one side.

ENGADGET: RIM and Motorola modify nano-SIM proposal, hope to meet Apple halfway