期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：6
页码：9939
DOI：10.15680/IJIRSET.2015.0506057
出版社：S&S Publications
摘要：In this paper, a compact re-configurable dual band notched wide-band antenna that is suitable for underlay and overlay UWB cognitive radio is proposed. Ultra wide-band cognitive radio (UWB-CR) features the use of UWB transmission as the enabling technology for cognitive radio, in both the underlay and overlay spectrum sharing approaches. The antenna can be operated as ultra wide-band, for underlay CR and for sensing in the overlay CR, and is re-configurable in terms of the ability to selectively have a band notch in the Wi-MAX and WLAN bands, to prevent interference to primary users operating in these bands, when used in the overlay CR mode. By etching out two CSRR of different dimensions in the radiating patch, two band-notched properties in the Wi-MAX (3-3.7 GHz), WLAN (5.125-5.825 GHz) are obtained. The realized antenna achieved an operating bandwidth (VSWR 2) ranges from 2.72 to more than 25 GHz with double notched bands of 3.3-3.82GHz and 4.79-5.8 GHz. The proposed antenna is well designed and extensively investigated. The simulation results are given to verify that the proposed antenna with a wide bandwidth is suitable for modern high data rate UWB communication applications. The maximum measured gain for the fabricated antenna is around 11.34 dBi with an average efficiency above 88.97% throughout the bandwidth.
关键词：Ultra Wide Band (UWB); Circular Split Ring Resonator (CSRR); Cognitive Radio; Notch Band;Opportunistic Spectrum Access (OSA); Wi-MAX; WLAN
