Microwave diffraction and interference in reflection using transient radiation from optoelectronically pulsed antennas

Broadband (15-130 GHz) microwave interference and diffraction are demonstrated in a reflection configuration using transient radiation from optoelectronically pulsed antennas. The measured complex reflection function of Fabry-Perot interferometers and diffraction from amplitude gratings are presented. The effectiveness of the technique for quantifying the scattering from general three-dimensional objects is discussed.