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 stationary 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 the case of two-dimensional arrays). This structure defines a nondispersive antenna, the 'prismatic array antenna' in a frequency band of about 10%.