The invention relates in part to a folded dipole having a dipole axis and a pair of arms which together have a profile which is concave on one side and convex on the other when viewed along the dipole axis. The dipoles may be arranged as a dipole box around a central region, typically in a generally...http://www.google.com/patents/US7692601?utm_source=gb-gplus-sharePatent US7692601 - Dipole antennas and coaxial to microstrip transitions
