2005 IEEE AP-S-Compact Printed Band-Notched UWB Slot Antenna

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A compact printed ultra-wideband (UWB, 3.1 ~ 10.6 GHz) circular slot antenna having a notched frequency band at 5 GHz is presented. The antenna is a uniplanar structure and occupies a compact area of 25 x 26 mm2 only (side length less than 27% of the lower edge frequency at 3.1 GHz). The antenna has a U-slotted circular stub embedded inside the circular slot. By choosing the length of the U-slot cut in the circular stub to be about a half-wavelength of the desired notched frequency, a band-notched UWB operation is obtained.

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