Amplitude-only pattern nulling of linear antenna arrays with the use of an immune algorithm

✍ Scribed by Kerim Guney; Bilal Babayigit

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 217 KB
• Volume: 18
• Category: Article
• ISSN: 1096-4290
• DOI: 10.1002/mmce.20298

✦ Synopsis

This article presents an optimization immune algorithm (opt-IA) for null steering of linear antenna arrays by controlling only the element amplitudes. Nulling of the pattern is also achieved by controlling the phase-only and the complex weights (both the amplitude and phase) of the array elements. The opt-IA is a new evolutionary computing algorithm based on the clonal selection principle of immune system. To show the accuracy and flexibility of the proposed opt-IA, several examples of Chebyshev array pattern with the imposed single, multiple, and broad nulls are given. It is found that the nulling technique based on opt-IA is capable of steering the array nulls precisely to the undesired interference directions. V