Premium
Measurement of transmittance and permittivity of dielectric materials using dispersive Fourier transform spectroscopy
Author(s) -
Afsar Mohammed N.,
Wang Yong,
Moonshiram Anusha
Publication year - 2003
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10961
Subject(s) - materials science , transmittance , permittivity , dielectric , dissipation factor , microwave , fourier transform spectroscopy , fourier transform infrared spectroscopy , spectrometer , optics , dielectric loss , spectroscopy , analytical chemistry (journal) , optoelectronics , chemistry , physics , chromatography , quantum mechanics
Transmittance and permittivity of several dielectric materials such as plexiglas, acrylic, and polypropylene were measured using dispersive Fourier transform spectroscopy (DFTS). The measured results showed that the transmittance of plexiglas and acrylic specimens decreases with the increase of frequency in the range of 50–380 GHz. Accurate spectra of complex permittivity and loss tangent of these specimens in this frequency range are also given. Very good agreement was seen in the overlapped frequency range between the measured data and the published data, measured using other techniques such as the W‐band spectrometer with backward wave oscillator and the free‐space measurement. This technique can be used for measurements of various dielectric materials, provided that flat specimens are available. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 27–30, 2003