A quantized water cycle optimization algorithm for antenna array synthesis by using digital phase shifters

Kerim GÜNEY

In this article, a quantized water cycle algorithm (QWCA) is used for the antenna array pattern synthesis with low side-lobe levels (SLLs) and nulls at desired directions by using four-bit digital phase shifters. In addition to the standard features as a metaheuristic algorithm, QWCA has an internal quantization mechanism and a precalculated array factor method. The latter provides an accelerated procedure to QWCA under favour of the digitized values that can be stored in a three-dimensional array. This acceleration is based on the reality that the accessing data in the memory need less time t ...Daha fazlası

Makale/Derleme 2015 Internatıonal Journal Of Rf And Mıcrowave Computer-Aıded Engıneerıng 15 Görüntülenme

Pattern Nulling of Linear Antenna s Using Backtracking Search Optimization Algorithm

Kerim GÜNEY

An evolutionary method based on backtracking search optimization algorithm (BSA) is proposed for linear antenna array pattern synthesis with prescribed nulls at interference directions. Pattern nulling is obtained by controlling only the amplitude, position, and phase of the antenna array elements. BSA is an innovative metaheuristic technique based on an iterative process. Various numerical examples of linear array patterns with the prescribed single, multiple, and wide nulls are given to illustrate the performance and flexibility of BSA. The results obtained by BSA are compared with the resul ...Daha fazlası

Makale/Derleme 2015 Internatıonal Journal Of Antennas And Propagatıon 10 Görüntülenme