UWB Antenna Integrated with Narrowband Antenna for Cognitive Radio Applications and Tuning With Using Impedance Matching Circuit Design

Document Type : Original Article

Authors

1 - Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

3 Department of Electrical Engineering, Imam Khomeini International University, Ghazvin, Iran

Abstract

In this paper, a new CPW (Coplanar Waveguide) fed printed UWB antenna integrated with a narrowband antenna is designed and analyzed for cognitive radio applications. The ultra-wideband (UWB) and narrowband (NB) antennas provide bandwidth from 2.2 GHz to 11GHz and from 4.8 GHz to 5.7 GHz respectively and reasonable isolation between the antennas. A prototype of the integrated antenna was fabricated and its performance was verified. The dimensions of the FR4 substrate are 40 × 48 × 1.6 mm3.The antenna represents good radiation characteristics, stable gain and good time domain manner to deliver the requirements of the current wireless communication standards. Also, two external tuning circuits were designed to show the ability of the narrowband antenna for reconfiguration.

Keywords

References

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TABRIZ JOURNAL OF ELECTRICAL ENGINEERING
Volume 50, Issue 4 - Serial Number 94
March 2021
Pages 1455-1461

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