Band-notched ultra-wideband planar-monopole antenna

An ultra-wideband (UWB) planar metal-plate monopole antenna with a band-notch characteristic is presented. The proposed planar metal-plate monopole antenna is embedded with an inverted U-shape slot, whose length is selected to be a half-wavelength at the desired notched frequency. By adjusting the slot length, the notched frequency band within the antenna's operating bandwidth can be easily controlled. A design example for an UWB (3.1-10.6 GHz) planar metal-plate monopole antenna with a notched frequency band at 5 GHz is demonstrated. (C) 2005 Wiley Periodicals, Inc.