<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Three-dimensional body scanning systems are increasingly used in sensitive public areas such as airports. By providing a high resolution image of a person from all sides, it is possible to detect potential metallic, ceramic and explosive threats. For these systems, it is essential to design broadband antennas with a fan beam, highly directional radiation in one plane and wide in the other plane, and characterized by phase center stability as a function of frequency. In this paper, the planar lateral wave antenna (LWA) array is proposed to achieve these radiation requirements. The LWA has two critical shortcomings: the flaring part and the dielectric matching layers (MLs), to operate over very broad frequency bands. In this work, these shortcomings are overcomed by forming a connected array of planar LWAs to improve broadband performance and by applying necessary perforations on the dense dielectric lens antenna to create different effective relative permittivity regions. An eight element connected and perforated LWA array is designed to operate in the 8–24 GHz frequency band. The drilled holes are proved to play a similar critical role of MLs in internal reflection suppression. The results emphasize all crucial demands for body scanning systems.</p></abstract>

Three-dimensional body scanning systems are increasingly used in sensitive public areas such as airports. By providing a high resolution image of a person from all sides, it is possible to detect potential metallic, ceramic and explosive threats. For these systems, it is essential to design broadband antennas with a fan beam, highly directional radiation in one plane and wide in the other plane, and characterized by phase center stability as a function of frequency. In this paper, the planar lateral wave antenna (LWA) array is proposed to achieve these radiation requirements. The LWA has two critical shortcomings: the flaring part and the dielectric matching layers (MLs), to operate over very broad frequency bands. In this work, these shortcomings are overcomed by forming a connected array of planar LWAs to improve broadband performance and by applying necessary perforations on the dense dielectric lens antenna to create different effective relative permittivity regions. An eight element connected and perforated LWA array is designed to operate in the 8–24 GHz frequency band. The drilled holes are proved to play a similar critical role of MLs in internal reflection suppression. The results emphasize all crucial demands for body scanning systems.

A novel planar, broadband, high gain lateral wave antenna array for body scanning applications

Department of Electronics and Communications Engineering, Faculty of Electrical and Electronics

Microelectronics Department, Faculty of Electrical Engineering

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Three-dimensional body scanning systems are increasingly used in sensitive public areas such as airports. By providing a high resolution image of a person from...

A novel planar, broadband, high gain lateral wave antenna array for body scanning applications

Article Category: Papers

Published Online: Nov 26, 2020

Page range: 308 - 316

Received: Aug 18, 2020

DOI: https://doi.org/10.2478/jee-2020-0042

Keywords
connected array, dielectric lens antenna, dielectric matching layers, perforated lens

© 2020 Fikret Tokan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A novel planar, broadband, high gain lateral wave antenna array for body scanning applications

Article Category: Papers

Published Online: Nov 26, 2020

Page range: 308 - 316

Received: Aug 18, 2020

DOI: https://doi.org/10.2478/jee-2020-0042

Keywordsconnected array, dielectric lens antenna, dielectric matching layers, perforated lens

© 2020 Fikret Tokan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
connected array, dielectric lens antenna, dielectric matching layers, perforated lens