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A planar anti-interference UWB antenna with designated tunable and reconfigurable multiple filtering bands

This paper provides a printed anti-interference antenna with excellent wide tunable and reconfigurable multiple filtering bands for ultra-wideband applications. The anti-interference characteristics are realized by the use of stubs and resonators to filter out unwanted narrowband signal interferences. Also, the wide tunable filtering function is implemented by adjusting the dimensions of these designed stubs and resonators, while the reconfigurable characteristics are carried out by switching on or off the resonance of these stubs and resonators according to each notch band. The proposed antenna is well designed and its performance is carefully investigated by using the ANSYS HFSS. The simulated results show that the proposed antenna has triple notches whose center frequencies are tunable, and can provide a reconfigurable frequency rejection characteristic, rendering it promising for short range UWB communication and multi-mode wireless communication applications.