Integrated Ultrawideband/Narrowband Rectangular Dielectric Resonator Antenna for Cognitive Radio

Author

Yongfeng Wang ; Naizhi Wang ; Denidni, Tayeb A. ; Qingsheng Zeng ; Gao Wei

Author_Institution

Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China

Volume

13

fYear

2014

fDate

2014

Firstpage

694

Lastpage

697

Abstract

An integrated ultrawideband (UWB) and narrowband (NB) rectangular dielectric resonator antenna (DRA) is presented. The proposed antenna consists of a UWB rectangular DRA excited by a bevel-shaped patch and an NB DRA excited by a strip. The measured results demonstrate that the UWB and NB antenna provides a 2:1 voltage standing wave ratio (VSWR) bandwidth for 2.4-12 and 2.3-4.5 GHz, respectively, with the same polarization. Moreover, two symmetrical short-circuited strips are introduced to improve the isolation between the two ports. This can be a suitable candidate for applications in cognitive radio, where the UWB antenna can be used for spectrum sensing and the NB antenna for communication operation.

Keywords

UHF antennas; antenna radiation patterns; cognitive radio; dielectric resonator antennas; microwave antennas; ultra wideband antennas; DRA; NB rectangular dielectric resonator antenna; UWB rectangular dielectric resonator antenna; VSWR bandwidth; antenna radiation patterns; bevel-shaped patch; cognitive radio; frequency 2.3 GHz to 4.5 GHz; frequency 2.4 GHz to 12 GHz; narrowband rectangular dielectric resonator antenna; short circuited strips; spectrum sensing; ultrawideband rectangular dielectric resonator antenna; voltage standing wave ratio; Antenna radiation patterns; Cognitive radio; Dielectric resonator antennas; Dielectrics; Niobium; Ultra wideband antennas; Cognitive radio; dielectric resonator antenna; isolation; polarization; ultrawideband;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2314480

Filename

6781012