| 摘要 |
A multiband frequency selective filter is assembled on a housing or an antenna module of a small portable device. The multiband frequency selective filter comprises at least two overlapped substrates. Each substrate includes a dielectric base and a conductive layer. The conductive layers respectively form unit cells. The unit cells are arrayed periodically or non-periodically. Appropriate shape and arrangement of the unit cells and overlapping of the substrates, forms a three-dimensional resonant array of inductance and capacitance in direction of a plane and height of the unit cells, thereby evidently lessening resonant wave length of electromagnetic wave and achieving miniature of unit cells of FSS. |
