Title :
Error Assessment in Near-Field Free-Wave Measurements
Author :
Khosrowbeygi, A. ; Griffiths, H.D. ; Cullen, A.L.
Author_Institution :
University College London, Department of Electronic and Electrical Engineering, Torrington Place, London WC1E 7JE. UK.
Abstract :
A generalized solution for transmission and reflection coefficients of a slab in the near-field region is introduced. The use of the angular spectrum model in measuring the properties of materials is discussed, and the impact of the near-field measurement in compact free-wave systems is demonstrated. The use of a dielectric lens to reduce the diffraction of the wave from the edges of the sample, and its impact on the material properties are discussed.
Keywords :
Antenna measurements; Dielectric materials; Dielectric measurements; Equations; Lenses; Optical materials; Optical reflection; Permittivity measurement; Slabs; Wavelength measurement;
Conference_Titel :
Microwave Conference, 1994. 24th European
Conference_Location :
Cannes, France
DOI :
10.1109/EUMA.1994.337337
