摘要
Microwave imagers have attracted great interest because of their non-contact and high-penetration advantages,but conventional microwave imagers require complex hardware structures and time-consuming data acquisition,limiting their further applications in real-time sensing.To solve the limitations,we propose a Ku-band microwave staring imager for front-view imaging with a single receiver based on a 1-bit transmissive programmable metasur-face.By dynamically changing the coding patterns on the metasurface according to the Hadamard matrix,the imager can reconstruct the given images according to the data collected by the receiver.With a simple hardware architecture and a compact structure,the proposed imager fulfills high-quality image reconstructions with high recognition accuracy in the task of microwave sensing,implying its broad application prospects,such as in security inspection,sensing,and medical examination.
基金
National Natural Science Foundation of China(62288101)
China National Postdoctoral Program for Innovative Talents(BX20200080)
China National Postdoctoral Science Foundation(2021M690603)
National Key Research and Development Program of China(2023YFB3811300,2023YFB3811302)
Natural Science Foundationof Jiangsu province−(BK20210210,BK20212002)
FundamentalResearch Funds for the Central Universities(2242023K5002).
