| 摘要 |
The circuit board comprises a dielectric substrate layer (602) having a plurality of holes filled with variable impedance material (618) extending through it. The variable impedance material has a relatively high impedance when subjected to a voltage or current under a predetermined threshold, and a relatively low impedance when subjected to a voltage or current above the threshold. The circuit board further can have an anisotropically conducting transmission layer (606), a circuit layer (608) and a ground plane (604). |
