An array technique with grating-lobe suppression for limited-scan applications

A new technique called "odd-mode scanning" is introduced and shown to function by suppressing grating lobes and hence allowing large elements to be used in a phased array for limited-scanning applications. Analytical and experimental results are included to show the -plane-scan behavior of the technique, while -plane- and intercardinal-plane-scan conditions are discussed to give a basis for predicting the two-dimensional-scan characteristics.