Slot-loaded folded dipole antenna with wideband and unidirectional performance for L-band applications

Mobashsher, Ahmed Toaha and Abbosh, Amin (2014) Slot-loaded folded dipole antenna with wideband and unidirectional performance for L-band applications. IEEE Antennas and Wireless Propagation Letters, 13 798-801. doi:10.1109/LAWP.2014.2318035


Author Mobashsher, Ahmed Toaha
Abbosh, Amin
Title Slot-loaded folded dipole antenna with wideband and unidirectional performance for L-band applications
Journal name IEEE Antennas and Wireless Propagation Letters   Check publisher's open access policy
ISSN 1536-1225
1548-5757
Publication date 2014-01-01
Year available 2014
Sub-type Article (original research)
DOI 10.1109/LAWP.2014.2318035
Volume 13
Start page 798
End page 801
Total pages 4
Place of publication Piscataway, NJ United States
Publisher Institute of Electrical and Electronics Engineers Inc.
Language eng
Subject 2208 Electrical and Electronic Engineering
Abstract Wideband antennas operating at L-band are rapidly finding their applications in various microwave-based medical diagnostic systems. To increase signal penetration while working in a limited space, these systems require compact unidirectional antennas. To meet these requirements, a three-dimensional folded dipole antenna is presented. It is composed of a slot-loaded coaxially fed printed slab and a U-shaped copper structure that completes the folded dipole loop. An appropriate slot loading enables achieving significant improvements of the proposed design in terms of bandwidth, gain, and front-to-back ratio compared to the conventional folded dipole antenna. A parametric analysis is performed for a deep understanding of the antenna's mechanism. A fabricated prototype demonstrates 57% fractional bandwidth, centered at 1.44 GHz with an average gain of 3.7 dBi over that band. The antenna has a directional radiation pattern with around 9 dBi front-to-back ratio and-10-dB cross-polarization levels along the boresight direction. The overall volume of the antenna is 0.24,×,0.10,×,0.05 λ3, where λ is the wavelength of the lowest operating frequency.
Keyword Folded dipole antenna
Medical diagnostic system
Unidirectional radiation pattern
Wideband antenna
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Information Technology and Electrical Engineering Publications
 
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