Beam-Steerable Transponder Based on Antenna Array and Phased Modulators

This letter presents a novel concept of beam-steerable transponder based on antenna array and phased modulators. The steerability the beam is achieved by optimally delaying modulated reflected signal at each element (i.e., changing phase in frequency domain) with load modulation technique. In this manner, backscattered power can be maximized one particular direction. approach makes to collect ambient waves from any direction further modulate redirect it other results obtained through experimentation proves feasibility omnidirectional pave way for future lower smart devices. functions Wi-Fi band 2.4 GHz.