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A dual band-notched ultra-wideband monopole antenna with spiral-slots and folded SIR-DGS as notch band structures

Published online by Cambridge University Press:  27 April 2015

Seyed Saeed Mirmosaei ,
Seyed Ebrahim Afjei ,
Esfandiar Mehrshahi  and
Mohammad M. Fakharian
Seyed Saeed Mirmosaei
Affiliation:
Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran, Iran
Seyed Ebrahim Afjei
Affiliation:
Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran, Iran
Esfandiar Mehrshahi
Affiliation:
Department of Electrical and Computer Engineering, Shahid Beheshti University, Tehran, Iran
Mohammad M. Fakharian*
Affiliation:
Department of Electrical and Computer Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran
*
Corresponding author: M.M. Fakharian Email: [email protected]
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Abstract

In this paper, an ultra-wideband (UWB) planar monopole antenna with impedance bandwidth from 2.83 to 11.56 GHz and dual band-notched characteristics is presented. The antenna consists of a small rectangular ground plane, a bat-shaped radiating patch, and a 50-Ω microstrip line. The notched bands are realized by introducing two different types of structures. The half-wavelength spiral-slots are etched on the radiating patch to obtain a notched band in 5.15 5.925 GHz for WLAN, HIPERLAN, and DSRC systems. Based on the single band-notched UWB antenna, the second notched band is realized by etching a folded stepped impedance resonator as defected ground structure on the ground plane for WiMAX and C-band communication systems. The notched frequencies can be adjusted by altering the length of resonant cells. Surface current distributions and equivalent circuit are used to illustrate the notched mechanism. The performance of this antenna both by simulation and by experiment indicates that the proposed antenna is suitable and a good candidate for UWB applications.

Keywords

Antennas and propagation for wireless systemsAntenna designModeling and measurements
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 8 , December 2016 , pp. 1197 - 1206
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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