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A Printed Monopole Antenna With Two Steps and a Circular Slot for UWB Applications

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2 Author(s)
Ahmed, O. ; Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC ; Sebak, A.

This letter presents a printed monopole antenna with two steps and a circular slot for ultrawide band (UWB) applications. The proposed antenna is fabricated and tested. The proposed antenna has a wide frequency bandwidth of 8.4 GHz starting from 3 GHz up to 11.4 GHz for a return loss (S_11) of less than - 10dB and gain flatness over the frequency range. Measured results show also that the proposed antenna features satisfactory radiation characteristics within the achieved impedance bandwidth. By introducing a simple and proper narrow slot in the radiating element, frequency-notched characteristics can be obtained and a good band-notched performance in the 56 GHz band can be achieved.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:7 )