• DOI:10.1049/EL.2014.2226
• Corpus ID: 7221667

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}
}

• S. Zheng, Xiongying Liu, M. Tentzeris
• Published 9 October 2014
• Business
• 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 constructed. On the basis of simulated and measured results, the proposed antenna exhibits good radiation behaviour and operates in a wide band with the performance of switchable band rejection of the wireless local area network (WLAN) 2.4 GHz (2.2–2.9 GHz), worldwide interoperability for microwave access (WiMAX) (3.2–4.7 GHz), WLAN 5 GHz (4.8–6.6 GHz) and the ITU 8 GHz (7.5–8.7 GHz).