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Active Amplifier-Based Sensing Metasurface
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AI
DOI：10.1109/tmtt.2026.3691103.png)
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Abstract
En 中文
Electromagnetic wave sensing technologies, such as radar and large-scale antenna systems, usually involve complex radio frequency (RF) transceiver chains and sophisticated data processing, leading to high system complexity and latency. While reconfigurable metasurfaces provide a simplified architecture for sensing tasks, they frequently require additional algorithms or integrated sensors, reintroducing computational overhead and hardware demands. To address these limitations, an active amplifier-based sensing metasurface is proposed with a simpler architecture. An active amplifier-based sensing metasurface consists of a metantenna and a power amplifier (PA), enabling it not only to enhance detection wave energy but also to directly demodulate object-scattered waves through measurable variations in the amplifier’s DC current. This approach eliminates the need for conventional RF receiving chains and extensive sensor networks. The proposed method significantly reduces both hardware complexity and processing latency while simplifying baseband algorithm and platform requirements, presenting a streamlined and efficient alternative for object detection and environmental sensing.
Keywords:
Active metasurface
metasurface
microwave sensors
power amplifier (PA)
reconfigurable metasurface
Journal
IF:
4.5
Papers:
593
Citations:
3.5W