TY - JOUR
T1 - Characterizing Complex Permittivity of Thin Materials by Free Space Transmission and Reflection Coefficients
AU - Xue, Bing
N1 - Publisher Copyright:
IEEE
PY - 2024
Y1 - 2024
N2 - In this letter, we introduce a permittivity characterization method for thin materials. It can operate without reference-plane calibrations in free space, reducing system complexity, especially at THz frequencies. The relevant solving formulas and resolution analysis are derived. Full simulations validate the proposed method and analyze its performance with different thicknesses and loss tangents, showing excellent performance for common materials. When applying the method to characterize the permittivities of different samples in the G-band, it provides accurate estimates, particularly for high-loss materials. Therefore, it is a proper candidate for permittivity characterization of thin materials.
AB - In this letter, we introduce a permittivity characterization method for thin materials. It can operate without reference-plane calibrations in free space, reducing system complexity, especially at THz frequencies. The relevant solving formulas and resolution analysis are derived. Full simulations validate the proposed method and analyze its performance with different thicknesses and loss tangents, showing excellent performance for common materials. When applying the method to characterize the permittivities of different samples in the G-band, it provides accurate estimates, particularly for high-loss materials. Therefore, it is a proper candidate for permittivity characterization of thin materials.
KW - Accuracy
KW - Antenna measurements
KW - Calibration
KW - Complexity theory
KW - Free space method
KW - Permittivity
KW - Permittivity measurement
KW - Reflection coefficient
KW - Transcendental Equation
KW - low loss sheet
KW - low loss slabs
KW - transmission and reflection coefficients
UR - http://www.scopus.com/inward/record.url?scp=85202767797&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2024.3450634
DO - 10.1109/LAWP.2024.3450634
M3 - Article
AN - SCOPUS:85202767797
SN - 1536-1225
VL - 23
SP - 4438
EP - 4442
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 12
ER -