Title :
A dielectric probe for near-field millimeter-wave imaging
Author :
Hanham, S.M. ; Gregory, A. ; Maier, S.A. ; Klein, N.
Author_Institution :
Dept. of Phys., Imperial Coll. London, London, UK
Abstract :
A dielectric probe for performing near-field imaging in the millimeter-wave band is presented. The probe consists of a rectangular slab of low-loss dielectric material which is metalized on two sides and sharpened to a point of approximately 20 μm. This structure forms a parallel-plate waveguide which offers broadband operation and strong field enhancement and localization at the tip with a spatial resolutions of λ/250. A method of exciting the probe using a metal rectangular cavity resonator is also described.
Keywords :
cavity resonators; dielectric materials; millimetre wave imaging; broadband operation; dielectric probe; low-loss dielectric material; metal rectangular cavity resonator; millimeter-wave band; near-field millimeter-wave imaging; parallel-plate waveguide; rectangular slab; strong field enhancement; Cavity resonators; Dielectrics; Imaging; Millimeter wave technology; Probes; Resonant frequency; Spatial resolution;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380378
