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Design of a Band-Notched UWB Monopole Antenna by Means of an EBG Structure

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2 Author(s)
Yazdi, M. ; Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran ; Komjani, N.

In this letter, a new compact ultra wideband circular monopole antenna with an acceptable band-rejection characteristic is investigated. This rejection band is created by means of an electromagnetic band-gap (EBG) structure. The EBG structure that is used here is a mushroom-like structure. An equivalent circuit model is employed to investigate the stopband characteristic of the EBG. The operation frequency band is 3.1-10.6 GHz with a rejection band of 0.7 GHz around 5.5 GHz. Accurate and high rejection is achieved. The proposed model is implemented, and the measured results are in good agreement with simulated ones.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )