The Prismatic Array Antenna a non Dispersive Travelling Wave Array Antenna

The prismatic array antenna is a new array antenna, the maximum gain direction of which is almost stationnary in the frequency band. A first scattering array acts as a feed for a second array tilted relative to the first one at some specific angle. Between the two arrays, propagation may be either a guided-space one (between parallel plates for example) or a free-space one (in case of two-dimensional arrays). This structure defines a non dispersive antenna, the "prismatic array antenna" in a frequency band of about 10%.