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Determining loss tangent values of dry granite for potential S‐band applications
Author(s) -
Helhel Selcuk,
Kocakusak Atalay,
Sunel Merve
Publication year - 2020
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.32494
Subject(s) - dissipation factor , dielectric , permittivity , dielectric loss , relative permittivity , materials science , reduction (mathematics) , tangent , absorption (acoustics) , composite material , acoustics , electronic engineering , engineering , optoelectronics , mathematics , physics , geometry
Examination of the historical buildings and the modern buildings for varying applications and specific absorption rate (SAR) reduction for certain applications from security to health concerns find significant attention in both engineering and science. Applications related to an electromagnetic field and material interaction require the determination of the dielectric coefficients of materials. Both ground‐penetrating radar, which is one of the nondestructive examination methods used during the examination of the historical and modern buildings, and SAR techniques manipulating materials' properties for reduction of specific absorption rates use complex dielectric permittivity of materials. The proposed study as a novelty deals with complex dielectric permittivity in the S‐band region for nine different types of granite commonly used in the construction industry. The standard waveguide method is used as a measurement method. The mean ε r for granite is measured as 4.49, and the mean tangent loss is measured as 0.45. Correspondingly, unlike the literature, a model that calculates the relative dielectric constant and dielectric loss value is obtained.