A New Design of Planar Frequency Reconfigurable Antenna with WiMAX and WLAN Band Rejection for UWB Applications

  • Esmail NASRABADI
  • Pejman REZAEI
Keywords: Reconfigurable Antenna, Band Rejection, Ultra Wideband (UWB).


In this paper, a new reconfigurable frequency microstrip antenna with an ability of two rejecting intruder frequency WLAN and
WiMAX bands for UWB applications is presented. In this antenna, a defect ground structure (DGS) and a U-shaped slot which is located on
the ground plane have been used to improve bandwidth. Antenna impedance matching has been achieved through creating two symmetric
incision on the microstrip feed line the antenna. Also rejecting Intruder frequency bands are omitted by two slots on the radiation patch, and
the performance of omitting rejecting frequency bands is controlled by putting two switches on the slots of radiation patch. Simulation
results show that the designed antenna is able to cover a frequency band 3.1-10.9 GHz (UWB) and does the performance of omitting
rejecting frequency bands in two frequency band 3.3-3.8 GHz (WiMAX) and 5.1-5.9 GHz (WLAN).