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Compact Dual Band-Notched Printed Monopole Antenna for UWB Application

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3 Author(s)
Abdollahvand, M. ; Parsabad Moghan Branch, Islamic Azad Univ., Parsabad Moghan, Iran ; Dadashzadeh, G. ; Mostafa, D.

A compact printed ultrawideband (UWB) monopole antenna with dual band-notched characteristics is presented. By inserting two I-shaped notches in both sides of the microstrip feed line on the ground plane, additional resonances are excited, and hence the bandwidth is increased up to 123%. Two notched frequency bands are achieved by embedding a pair of Γ-shaped stubs in the radiation patch and a modified G-slot defected ground structure in the feeding line. The designed antenna has a small size of 20 × 18 mm2 and operates over the frequency band between 2.8 and 11.8 GHz for VSWR <; 2, with one notch frequency band at 3.3-3.8 GHz (WiMAX band) and the other at 5.1-6 GHz (WLAN band). The VSWR and radiation patterns of the fabricated antenna are presented, which prove that the designed antenna is a good candidate for various UWB applications.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )