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Increasing the bandwidth of cavity-backed SIW antennas by using stacked cavities

Published online by Cambridge University Press:  22 March 2018

Hiba Abdel Ali ,
Enrico Massoni Open the ORCID record for Enrico Massoni [Opens in a new window] ,
Lorenzo Silvestri ,
Maurizio Bozzi ,
Luca Perregrini  and
Ali Gharsallah
Hiba Abdel Ali
Affiliation:
Unit of Research in High Frequency Electronics Circuits and Systems, Faculté des Sciences de Tunis, El Manar University, 2092 Tunis, Tunisia
Enrico Massoni*
Affiliation:
Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Via Adolfo Ferrata, 5, 27100, Pavia, Italy
Lorenzo Silvestri
Affiliation:
Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Via Adolfo Ferrata, 5, 27100, Pavia, Italy
Maurizio Bozzi
Affiliation:
Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Via Adolfo Ferrata, 5, 27100, Pavia, Italy
Luca Perregrini
Affiliation:
Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Via Adolfo Ferrata, 5, 27100, Pavia, Italy
Ali Gharsallah
Affiliation:
Unit of Research in High Frequency Electronics Circuits and Systems, Faculté des Sciences de Tunis, El Manar University, 2092 Tunis, Tunisia
*
Author for correspondence: E. Massoni, E-mail: enrico.massoni02@universitadipavia.it
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Abstract

This paper presents a technique to increase the bandwidth in substrate integrated waveguide (SIW) cavity-backed antennas, inspired by the design of cavity filters. The proposed structure consists of a slot antenna backed by two cavities, located one on top of the other and coupled through a slot. To demonstrate the bandwidth increase, a standard cavity-backed SIW antenna, with a rectangular slot etched in the top metal plane, has been designed, manufactured, and measured. Subsequently, a similar antenna was developed, by doubling the substrate thickness with the aim to improve the bandwidth. Finally, the new topology of two-cavity SIW antenna has been implemented and compared with the two previous ones. Simulation and experimental results show that the proposed two-cavity antenna exhibits a bandwidth twice as large as the standard SIW cavity-backed antenna.

Keywords

Antenna designfiltersmodeling and measurements
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 8 , October 2018 , pp. 942 - 947
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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