Investigation on single-sideband time-modulated arrays

This thesis investigates single-sideband time-modulated phased arrays (S-TMPAs) with a focus on their operating principles, advantages, and practical applications. Also Time-modulated arrays (TMAs) leverage time-domain modulation to achieve dynamic control over radiation patterns, offering increased beamforming flexibility and efficiency compared to traditional arrays. By combining TMA and phased array concepts, a single harmonic radiation can be obtained, allowing unprecedented beam steering capabilities. The introduction of an I/Q modulator in the basic TMPA design eliminates symmetric harmonics, resulting in an ultra-low sidelobe pattern. The research includes a mathematical analysis of generated signals for each radiating element and examines improvements achieved using various pulse waveforms, highlighting the superior performance of S-step waveforms. The thesis also addresses optimization algorithms for TMPAs and explores potential applications in communication, radar, sensing, and wireless power transfer. The findings contribute to the advancement of antenna technology, laying the groundwork for future research in time-modulated arrays.