面向低空通感网络的射频谐振波束技术OA

Low-altitude terminals are characterized by three-dimensional mobility,attitude variations,limited energy resources,and complex propagation environments,imposing stringent requirements on communication,sensing and localization,and continuous power supply.A radio-frequency resonant beam system(RF-RBS)exploits phase conjugation,retrodirectivity,and spatial closed-loop feedback to establish self-aligning energy-focusing links without explicit channel state information estimation or complex beam training,and can be further extended to support communication,power transfer,and cooperative sensing and localization.First,the system architecture and operating procedure of RF-RBS are introduced,and its phase-conjugation and retrodirective mechanisms under frequency-division duplexing are analyzed.The evolution of spatial modes and the power stabilization process under closed-loop feedback are then discussed,followed by a systematic review of research advances in communication,power transfer,cooperative sensing and localization,and electromagnetic safety.Finally,considering the high dynamics of low-altitude networks,resource constraints of terminals,and the demand for multi-function integration,the key challenges and future research directions of RF-RBS for low-altitude applications are analyzed.Existing studies indicate that RF-RBS has the potential to achieve adaptive beam focusing,reduce channel acquisition overhead,and facilitate the integration of communication,sensing,and power transfer,providing a new technical approach to reliable connectivity and sustained operation in low-altitude integrated sensing and communication networks.