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A CPW-fed tapered slot antenna with improved time and frequency domain characteristics

Published online by Cambridge University Press:  21 November 2016

Alireza Hokmabadi ,
Asghar Keshtkar ,
Alireza Bayat  and
Ahmad Keshtkar
Alireza Hokmabadi*
Affiliation:
Electrical Engineering Department, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin 34148-96818, Iran
Asghar Keshtkar
Affiliation:
Electrical Engineering Department, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin 34148-96818, Iran
Alireza Bayat
Affiliation:
Electrical Engineering Department, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin 34148-96818, Iran
Ahmad Keshtkar
Affiliation:
Medical Physics Department, Medical School, Tabriz University of Medical Sciences, Tabriz 51664, Iran
*
Corresponding author: A. Hokmabadi Email: a.hokmabadi.ee@gmail.com
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Abstract

In this paper, a miniaturized CPW-fed tapered slot antenna (TSA) with a modified CPW to slot-line transition structure was introduced. An air-bridge and tapered slot edge (TSE) structure was also employed to broaden the transition bandwidth. Through these applied modifications, negative features of the original TSA (limitation of transition) and antipodal Vivaldi antenna (bad cross-polarization) are both removed, while all the positive features remained. Results showed that the proposed structure offered a broad bandwidth of 2.6–20 GHz and also exhibited an appropriate current distribution with high radiation efficiency. The radiation pattern was stable in the working frequency band with good directivity, gain, and low cross-polarization. The proposed antenna structure also presented satisfactory time-domain characteristics. In this study, we confirmed the simulation results through data measurements.

Keywords

Antenna designModeling and measurementsAntennas and propagation for wireless systems
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 5 , June 2017 , pp. 1185 - 1190
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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