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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...
A compact broadband flexible antenna is proposed for applications in wireless local area network (WLAN) and upper ultra-wideband (UWB) systems, which can operate in the bandwidths of 2.4-2.484 GHz and 3.5-10.6 GHz with a reflection coefficient of <;-10 dB. The presented antenna coated with bio-compatible ultra-thin parylene-c is fabricated on a thin polyimide substrate with a thickness of 127 μm...
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