UWB Antenna Design for Dispersion Free Time Synchronized Pulse Radiation

An antenna that radiates nondispersive and time-aligned wave-fronts at all angles of radiation (in a half-space) is introduced. The antenna operates by the coupling of a broadband plane wave through an aperture of subwavelength diameter in a metal screen. The metal screen acts as a traveling wave structure for the diffracted broadband pulse that is coupled through the source aperture. The antenna produces spherical wavefronts which gives an apparent condition that its radiation originates from a point source. Having an impulse-like transfer function, the antenna radiates pulses with high fidelity. Applications for the antenna can be a pulse transmitter antenna for ultrawideband radar imaging and base station antenna for communications.