A compact ultra-wideband(UWB)antenna with miniature quadruple notch characteristics is proposed to mitigate interference in narrowband communication frequency bands.The radiating patch of the antenna adopts a special structure composed of a semi-circle and a rectangle,with chamfers introduced.The ground plane is improved using a stepped structure to effectively extend the bandwidth of the antenna at high frequencies.To achieve miniaturization and quadruple notch characteristics,the notch treatment is applied on the radiating patch of the antenna,which has dimensions of only 19.5 mm× 18 mm× 1.6 mm.Simulation results demonstrate that the antenna exhibits a return loss greater than-10 dB in the frequency bands of 4.1 to 4.5 GHz,4.9 to 5.85 GHz,7.15 to 7.75 GHz,and 7.96 to 8.55 GHz,effectively suppressing interference from digital microwave communication,WLAN,X-band,and International Telecommunication Union bands.With a bandwidth of 3.5～10.6 GHz after the notch treatment,the antenna can be widely used in UWB communication applications.The notch characteristics are well-maintained,and the quadruple notch characteristics expand the application scope of the antenna in communication systems,meeting the requirements of various UWB communication systems.
关键词
超宽带天线/四陷波/"U"形窄缝隙/钩形枝节/阶梯型接地板
Key words
ultra-wideband(UWB)antenna/four-notch wave/U-shaped narrow slit/hooked branches/stepped type floor joint
维普
万方数据