Sideband Suppression Through the Frequency of Sinusoidal Variable Pulse Amplitude Time Scheme in TMAs

In time modulated arrays, excitation strategies affect the characteristics of the array. Instead of using rectangular pulses, to have more stable response in frequency domain, sinusoidal signals may be used as excitation scheme. In this paper, variable pulse amplitude excitation strategy is combined with sinusoidal signals and the frequency of sinusoidal signal is appeared as a new degree of freedom. Radiation pattern may easily be shaped via any optimizer and sideband suppression may be achieved only controlling the frequency parameter. At the end of this study, an explanatory example using Differential Evolution Algorithm is given to discuss the results.