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A Novel Printed UWB Slot Antenna With Reconfigurable Band-Notch Characteristics

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4 Author(s)
Tasouji, N. ; Electr. Eng. Dept., Urmia Univ., Urmia, Iran ; Nourinia, J. ; Ghobadi, C. ; Tofigh, F.

A novel printed ultrawideband (UWB) slot antenna with reconfigurable band-notch characteristics is presented in this letter. The proposed antenna consists of a modified rectangular radiation patch with a circular and three rectangular-shaped slots etched on it. Additionally, by cutting two triangular-shaped slits on a modified ground plane, practical fractional bandwidth of more than 120% (3.12-12.51 GHz), defined by -10 dB return loss, is achieved. In order to generate single and dual band-notch characteristics, two p-i-n diodes are mounted across the circular slot. The designed antenna has small size of 20 × 20 mm2 with switchable single notched bands of 3.12-3.84 GHz WiMAX and 5-6.07 GHz WLAN, when diode 1 and diode 2 are respectively on. Also, dual bands of 3.12-3.82 and 4.9-6.06 GHz are eliminated from whole frequency band when both diodes are concurrently on.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:12 )