An antenna for Bluetooth and ultra-wideband(UWB)applications with dual band-notch reconfigurable characteristics is proposed.The antenna consists of a truncated circular monopole antenna and a 1/4 wavelength circular branch.Two half-wavelength circular gaps are etched on the circular patch to achieve notch function in WLAN(5.125～5.825 GHz)and ITU(8.025～8.4 GHz)bands.The reconfigurable characteristics of band notch can be realized by controlling the working state of PIN diode installed in notch structure.The test and simulation results show that in antenna working frequency range of 2.39～2.52 GHz and2.92～12 GHz,radiation performance of the antenna is good,and the peak gain reaches 5.2 dBi.It can be widely used in various communication systems.
维普
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