Abstract
Measurement results to validate the UTD triple diffraction coefficient are presented. The experimental setup consists of multiple metallic objects, with triangular and rectangular profiles, located inside an anechoic chamber and illuminated by a sector antenna to reproduce a spherical wavefront with a transverse electromagnetic (TEM) incident field. Another sector antenna is moved vertically to collect electromagnetic fields across the second order UTD Incident Shadow Boundaries and in the triple diffraction transition region. The measured and theoretical fields are compared using a free space normalization. Such comparison is also validated by calculating the mean error, the standard deviation, and root mean square error that occur between the theoretical model and the measured field. The results show excellent agreement between the theoretical third order UTD solution, employing the novel triple diffraction coefficient, and the experimental results.
Highlights
T HIS article discusses the first experimental validation of the Uniform Theory of Diffraction (UTD) triple diffraction coefficient for metallic wedges originally introduced by Carluccio et al in [1]
Thick black solid lines indicate measured fields, thick red dashed lines show the third order UTD fields computed by using the novel UTD triple diffraction coefficient [1]
Experimental results at the frequency of 25 GHz have been presented to validate the theoretical formulation of the UTD triple diffraction coefficient presented in [1]
Summary
T HIS article discusses the first experimental validation of the Uniform Theory of Diffraction (UTD) triple diffraction coefficient for metallic wedges originally introduced by Carluccio et al in [1]. Preliminary results were presented in [2]. The UTD [3], [4], is an efficient method to compute electromagnetic fields in electrically large problems. The UTD provides solutions for the scattering from metallic single wedges. When more complex geometries are involved, it may happen that one edge is positioned so that it is illuminated by the transition field of another edge. Since the transition field is not ray-optical, the cascaded application of UTD single wedge diffraction coefficients provides wrong results [5]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
