Optimal transmit beamforming for near-field integrated sensing and wireless power transfer systems

The integrated sensing and wireless power transfer (ISWPT) technology, in which the radar functionalities are implemented using same hardware platform, has been recently proposed. In this paper, we consider a near-field ISWPT system where one hybrid transmitter deploys extremely large-scale antenna arrays, multiple energy receivers located region of transmitter. Under such new scenario, study performance trade-offs by optimizing transmit beamforming vectors. particular, beampattern matching max-min gain design metrics. For each metric, aim to achieve best sensing, while guaranteeing requirement transfer. corresponding problems non-convex, semi-definite relaxation (SDR) approach is applied solve them globally optimally. Finally, numerical results verify effectiveness our proposed solutions.