A Demo of Radar Sensing Aided Rotatable Antenna for Wireless Communication

As a new antenna architecture, rotatable antenna (RA) can flexibly adjust antenna's boresight/orientation to enhance communication performance cost-effectively. In this demonstration, we present a prototype of radar sensing-aided RA system, where radar sensing module is applied to aid dynamic antenna orientation. The prototype consists of a transmitter (TX) module and a receiver (RX) module, both of which employ universal software radio peripherals (USRPs) for transmitting and receiving signals, respectively. Specifically, the RA-based TX first utilizes a laser radar to detect the RX's location and estimate its angle of arrival (AoA). Then, the antenna servo is controlled by an STM32 microcontroller to adjust its deflection angle, which enables the RA to align its boresight direction with the AoA detected for the RX. Experimental results verify the effectiveness of our developed prototype and demonstrate that the RA-based system significantly outperforms the conventional fixed-antenna system.