# Optically controlled reconfigurable band-notched UWB antenna for cognitive radio systems

@article{Zheng2014OpticallyCR,
title={Optically controlled reconfigurable band-notched UWB antenna for cognitive radio systems},
author={Shou Hui Zheng and Xiongying Liu and Manos M. Tentzeris},
journal={Electronics Letters},
year={2014},
volume={50},
pages={1502-1504}
}
• Published 9 October 2014
• Electronics Letters
A compact optically controlled ultra-wideband (UWB) antenna with reconfigurable band-notched characteristics is investigated for cognitive radio (CR) applications. The rejection mechanism is realised by etching one symmetric folded slot on the U-shaped radiation patch and the essence of the reconfigurable function is achieved by laser controlling photoconductive switches to change the effective length of the folded slot. A prototype with an overall size of 25 × 25 × 0.8 mm3 is designed and…
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