CPW-fed ultra-wideband antenna with triple-band notch function

Proposed is the design strategy for the triple-band notched ultra-wideband (UWB) antenna emphasising the rejection characteristic at 3.5/5.5/8.2 GHz bands. The essence of the design strategy is embedding the three notching elements onto the primitive antenna to serve as respective stop band filters. On embedding, the hot issue is how to minimise the level of cross-coupling among the three elements because no coupling leads to set its distinct stop bands orthogonally. Owing to the complete unmatched appearances in shapes and the optimised arrangement of elements, they are least of all in the coupling and thus the proposed antenna can be engineered to operate at specific frequencies. Measured results show the validity of the suggested design strategy.