This study reports on a reconfigurable antenna platform based on vanadium dioxide (VO₂), a phase‐change material (PCM) with low transition temperature, integrated with an addressable microheater matrix. For the first time, it is shown that an entire planar antenna can be thermally reconfigured virtually to any pattern by switching the phase of the selected regions of the VO₂ layer from insulator to metallic state by indirect thermal stimuli generated by individually addressable nichrome resistive microheaters. Careful selection of the individual pixels to start the phase transition from insulator (OFF) to metallic (ON) state allows creating different antenna patterns with unique resonance properties. Reconfiguring the antenna into different patterns, operating frequency can be tuned from C‐band (4–8 GHz) to X‐band (8–12 GHz), and S‐band (2–4 GHz) frequencies which cover the entire ultra wideband spectrum (3.1–10.6 GHz). The proposed approach provides a promising platform for designing monolithically integrated reconfigurable antennas, radio frequency devices, and circuits for various applications.

中文翻译：

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具有可寻址微型加热器矩阵的基于VO2的可重配置天线平台

这项研究报告了一种基于可重构天线平台，该平台基于二氧化钒（VO ₂），它是一种具有低转变温度的相变材料（PCM），并集成了可寻址的微加热器矩阵。首次显示，可以通过切换VO ₂选定区域的相位，将整个平面天线虚拟地热重配置为任何方向图。通过可单独寻址的镍铬电阻微加热器产生的间接热刺激，使绝缘体层从绝缘体变为金属状态。仔细选择各个像素以开始从绝缘体（OFF）到金属（ON）状态的相变，可以创建具有独特谐振特性的不同天线方向图。将天线重新配置为不同的方向图，可以将工作频率从C波段（4–8 GHz）调整为X波段（8–12 GHz），S波段（2–4 GHz）频率覆盖整个超宽带频谱（3.1–10.6 GHz）。所提出的方法为设计用于各种应用的单片集成可重构天线，射频设备和电路提供了一个有前途的平台。