Design of Dual Band-Notched CPW-Fed Uwb Planar Monopole Antenna Using Microstrip Resonators

Abstract

Abstract-In this letter, a new coplanar waveguide (CPW) fed ultra-wideband (UWB) planar monopole antenna with dual band-reject characteristics is proposed. Two resonators of different lengths are employed at the bottom layer to create two notches at the frequency of interest. The proposed fabricated antenna works from 2.8 to 11.34 GHz with two notched bands which cover the WLAN (5.725-5.825 GHz) and ITU (8.025-8.4 GHz) bands. The proposed antenna is fabricated and measured for verification purposes. Good agreement between the measurement and simulation is found.

Reconfigurable Band-Notched Slot Antenna Using Short Circuited Quarter Wavelength Microstrip Resonators

“…The reconfiguration of the UWB antenna enables the antenna to avoid the transmission at single, dual, or multiple frequency bands. The UWB antennas with the rejection of single band [4][5][6], dual bands [7][8][9], multiband [10], and reconfigurable bands [11] have been presented and investigated [4][5][6][7][8][9][10][11]. Some of the recently used approaches include using electromagnetic band-gap (EBG) structure [12,13], defected ground structure (DGS) [14], etching different slots on the patch or the ground [15,16], employing a band-reject filter into the feed line of the antenna [17], Varactor diodes [18], optical switches [19], PIN diodes [20], and rotational motion using a stepper motor [21].…”