In order to increase the antenna bandwidth,eliminate the distortion of the ultra wide band(UWB)antenna pattern and reduce the antenna size,a miniaturized UWB antenna is de-signed.By radiating metal slots in the antenna,the edge current of the antenna is reduced,the surface wave at the edge is suppressed,the energy is concentrated near the slot line,the radiation efficiency is improved,and the orientation pattern is distortion free.By loading resistance on the metal radiation surface,an open cavity at the end of the feed microstrip line and a short circuit cavity at the end of the slot line,the impedance matching of a wide band is realized.The two an-tennas are placed orthogonal to form a vertical and horizontal dual-polarized antenna,which is suitable for more scenarios.The simulation results show that the voltage standing wave ratio(VSWR)of the antenna is less than 2 in 0.15～1.05 GHz(relative bandwidth is 150%).The antenna size is 420 mm×320 mm,and the plane size is only 0.14λ0×0.106λ0(λ0 is the maxi-mum working wavelength),which realizes the antenna miniaturization.The antenna has a promis-ing application in the field of ultra-wideband wireless communication.
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