The determination of dielectric loss tangent by microwave phase tomography

Autor:	A P Anderson, S. Sali, R. Aitmehdi, M Ferando
Rok vydání:	1988
Předmět:	Permittivity Physics Scattering business.industry Applied Mathematics Phase (waves) Physics::Optics Dielectric Computer Science Applications Theoretical Computer Science Optics Microwave imaging Distortion Signal Processing Dielectric loss Born approximation business Mathematical Physics
Zdroj:	Inverse Problems. 4:333-345
ISSN:	1361-6420 0266-5611
DOI:	10.1088/0266-5611/4/2/002
Popis:	The possibility of quantitative phase tomography of dielectric objects in matching media is investigated. Computed cross sections of homogeneous and concentric cylinders with complex permittivity are generated from exact analytic expressions for scattered fields. The effect of dielectric loss within the object medium on the validity of the first-order Born approximation is examined. A technique for accurate measurement of weak scattering in the presence of a strong incident field is presented. The subtraction of distortion effects in the reconstructed phase image provides a means for microwave metrology of internal loss distributions within dielectric bodies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::80c710fdccba060f860a5d3edbe3d16f https://doi.org/10.1088/0266-5611/4/2/002 Zobrazit plný text záznamu