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Modified Transceiver Antenna for NQR Detection of Explosive Objects in Demining Conditions

Author

Listed:
  • Andrii Samila

    (Department of Radio Engineering and Information Security, Yuriy Fedkovych Chernivtsi National University, Kotsyubynsky 2, 58002 Chernivtsi, Ukraine)

  • Oleksandra Hotra

    (Department of Electronics and Information Technology, Lublin University of Technology, Nadbystrzycka 38D, 20-618 Lublin, Poland)

  • Oleksandr Moisiuk

    (Department of Radio Engineering and Information Security, Yuriy Fedkovych Chernivtsi National University, Kotsyubynsky 2, 58002 Chernivtsi, Ukraine)

  • Mykola Khobzei

    (Department of Radio Engineering and Information Security, Yuriy Fedkovych Chernivtsi National University, Kotsyubynsky 2, 58002 Chernivtsi, Ukraine)

  • Taras Kazemirskiy

    (Department of Radio Engineering and Information Security, Yuriy Fedkovych Chernivtsi National University, Kotsyubynsky 2, 58002 Chernivtsi, Ukraine)

Abstract

This paper presents the conceptual stages of the simulation and development of a modified transceiver antenna for a high-power pulsed nuclear quadrupole resonance (NQR) detector of explosives containing the 14 N isotope. At a frequency of 4.645 MHz, better characteristics are obtained using a nine-turn coil shaped as half of a Fermat spiral with an outer radius of 75 mm. Using a COMSOL Multiphysics numerical parametric simulation and a materials browser, it was possible to calculate a physical system with parameters as close to reality as possible. According to the results of the experimental studies of the radio frequency (RF) energy, the proposed antenna features an increase in the working area compared to a similar antenna, the topology of the conductive coil of which has the form of an Archimedean spiral. The resulting diagrams of the distribution of the magnetic induction also indicate that the topology of the electromagnetic (EM) field does not depend on the orientation of the sample under study relative to the axis of the radial symmetry observed in square–rectangular planar antennas.

Suggested Citation

  • Andrii Samila & Oleksandra Hotra & Oleksandr Moisiuk & Mykola Khobzei & Taras Kazemirskiy, 2022. "Modified Transceiver Antenna for NQR Detection of Explosive Objects in Demining Conditions," Energies, MDPI, vol. 15(19), pages 1-12, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7348-:d:934901
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