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

  • Hiba Abdel Ali (a1), Enrico Massoni (a2), Lorenzo Silvestri (a2), Maurizio Bozzi (a2), Luca Perregrini (a2) and Ali Gharsallah (a1)...

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.

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Corresponding author

Author for correspondence: E. Massoni, E-mail: enrico.massoni02@universitadipavia.it

References

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

  • Hiba Abdel Ali (a1), Enrico Massoni (a2), Lorenzo Silvestri (a2), Maurizio Bozzi (a2), Luca Perregrini (a2) and Ali Gharsallah (a1)...

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