Dual band-notched monopole antenna with enhanced bandwidth for ultra-wideband wireless communications

Mohammad Akbari; Neda Rojhani; Mehdi Saberi; Reza Movahedinia

Dual band-notched monopole antenna with enhanced bandwidth for ultra-wideband wireless communications

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Author(s): Mohammad Akbari¹ ; Neda Rojhani² ; Mehdi Saberi² ; Reza Movahedinia¹
- Affiliations: 1: Department of Electrical and Computer Engineering , Concordia University , Montreal , QC , Canada ;
  2: Young Researchers and Elite club, Central Tehran Branch , Islamic Azad University , Tehran , Iran
Source: Volume 2014, Issue 8, August 2014, p. 415 – 419
DOI: 10.1049/joe.2014.0130 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)

Received 14/05/2014, Accepted 07/07/2014, Published 11/07/2014

A new configuration of an ultra-wideband (UWB) dual band-notched antenna is presented. The designed geometry consists of octagonal radiating patch, a 50 Ω microstrip feed-line on the front and an asymmetric partial ground on the back. For impedance bandwidth enhancement, a unilateral stepped structure is utilised on the ground. By etching two E-shaped slots connected to each other on the radiating patch and applying E-shaped defected ground structure on the back, dual notched bands are achieved. The antenna is printed on a low profile FR4 substrate with a compact size of 25 × 18 × 1 mm³. The experimental results indicate that the antenna has an impedance bandwidth from 2.55 to 21.65 GHz for voltage standing wave ratio ≤2, except the notched bands on worldwide interoperability for microwave access and wireless local area network bands. Moreover, stable radiation patterns and gains within the operating band are shown.

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Dual band-notched monopole antenna with enhanced bandwidth for ultra-wideband wireless communications

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