Near-field microwave sensor composed of 3D printed antennas and lenses

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dc.contributor.authorWirth, Sebastian G.
dc.contributor.authorMorrow, Ivor L.
dc.date.accessioned2019-04-08T11:57:40Z
dc.date.available2019-04-08T11:57:40Z
dc.date.issued2018-10-25
dc.description.abstractA novel near-field microwave imaging system was designed and fabricated using the three-dimensional (3D) printing technique to manufacture X-band Pyramidal horn antennas and planar graded-index (GRIN) lenses. The flat lens focusing profile is synthesised by varying the refractive index radially in incremental steps that adjust the air-dielectric mixture. The lens is designed for direct attachment to the antenna aperture and transforms spherical waves emanating from antenna phase center into plane radiating waves. Measurement results show the antenna lens system input impedance is ≤ -10 dB, radiation pattern gain is between 10-16 dBi over the 8-12 GHz frequency band and when arrayed for polarimetry sensing has a polarisation cross-talk of ≤ -35 dB. The antenna lens system is suitable for ground penetrating radar applications.en_UK
dc.identifier.citationWirth S and Morrow I., Near-field microwave sensor composed of 3D printed antennas and lenses. In: 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), Reykjavik, Iceland, 8-10 August 2018en_UK
dc.identifier.isbn978-1-5386-5205-3
dc.identifier.urihttp://doi.org/10.1109/NEMO.2018.8503209
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14056
dc.language.isoenen_UK
dc.publisherIEEEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectAntennaen_UK
dc.subject3D print manufactureen_UK
dc.subjectMicrowave imagingen_UK
dc.subjectGRIN lensen_UK
dc.subjectPolarimetryen_UK
dc.titleNear-field microwave sensor composed of 3D printed antennas and lensesen_UK
dc.typeConference paperen_UK

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