Structural wideband multifunctional apertures

A structural wideband multifunctional aperture comprising:

• a ground plane operable to ground radio frequency (RF) and direct current (DC) electrical fields;
• a structural egg crate circuit board comprising a grid of circuit board planes coupled to the ground plane and configured substantially perpendicular to the ground plane around a plurality of open boxes;
• a signal feed-line coupled to the structural egg crate circuit board and operable to couple to a signal transmission line;
• and
• a driven feed layer configured substantially parallel to the ground plane and coupled to the signal feed-line and to a side of the structural egg crate circuit board opposite to the ground plane.