An electromagnetic radiation interface is provided that is suitable for
use with radio wave frequencies. A surface is provided with a plurality
of metallic conical bristles. A corresponding plurality of termination
sections are provided so that each bristle is terminated with a
termination section. The termination section may comprise an electrical
resistance for capturing substantially all the electromagnetic wave
energy received by each respective bristle to thereby prevent reflections
from the surface of the interface. Each termination section may also
comprise an analog to digital converter for converting the energy from
each bristle to a digital word. The bristles may be mounted on a ground
plane having a plurality of holes therethrough. A plurality of coaxial
transmission lines may extend through the ground plane for
interconnecting the plurality of bristles to the plurality of termination
sections.