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Design of a Band-Notched CPW-Fed UWB Antenna

A design method of a band-notched CPW-fed planar circular monopole UWB antenna is presented.This antenna can satisfy the spectrum requirement of UWB wireless communications which covers a spectrum range from 3.1 GHz to 10.6 GHz.The band-notched character(VSWR≥2)is achieved by adding a U slot on the circular patch when spectrum is from 4.75 GHz to 5.96 GHz and by adding a curve slot when spectrum is from 4.8 GHz to 6.2 GHz.The interference of the WLAN(5 GHz)is avoided.The radiation patterns are illustrated with the electromagnetic simulation software CST,and the results indicate that the design is reasonable.