A Compact Dual Sharp Band-Notched Uwb Antenna With Open-Ended Slots

Abstract

Abstract-A compact microstrip-fed antenna with dual band-notched characteristics for ultrawideband (UWB) applications is presented.By introducing two open-ended inverted L-shaped slots, two sharp notches are achieved at frequencies of 3.16-3.70 GHz and 5.10-5.95 GHz for VSWR > 2. A rectangular slot in the ground plane can improve the impedance bandwidth of the proposed antenna. The prototype occupies a compact area of 22 × 26 mm 2 . The measurement results indicate that the proposed antenna can reject the interference with coexisting worldwide interoperability for microwave access (WiMAX) and wireless local area network (WLAN) systems. The proposed antenna shows relatively omnidirectional radiation patterns in the pass band.

Single-Feed C-shaped Microstrip Antenna with Co-axial Feed for Tri-band Applications

“…With further study and optimization of dual band microstrip antenna [2] it has been found that the return loss for dual band frequency at 2.4GHz is -43dB and at 3GHz is -27dB. To get compact size and maintaining optimum performance of antenna for multiple bands i.e., dual band, triple band antennas etc., various shapes of antenna was integrated [3]. As suggested in [4], introducing slot into patch (L-Shape) increases the impedance bandwidth up to 13%.…”