A new class of equi-amplitude omnidirectional linear arrays

A new class of equi-amplitude excitation sequences (PAT Codes) for feeding large linear omnidirectional arrays has been presented. The use of PAT Codes succeeds in obtaining radiation patterns with excellent omnidirectional characteristics avoiding, at the same time, power utilization inefficiencies due to amplitude tapering. PAT Codes, which derive from an innovative design method named Spectral Domain Synthesis (SDS), can be generated analytically with a simple recursive formula and are available for any perfect square number of radiating elements. The new class of equi-amplitude excitation sequences based on PAT Codes outperform both on average and locally other available excitation laws.