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New formalism for characterization of simple non-reciprocal networks free from singularity-point problem
(ELSEVIER SCI LTD, JUN 2021)
A method has been proposed for accurate characterization of non-reciprocal networks without enforcing the passivity principle. Thanks to the introduced different even and odd coefficients, our method has no singularity-point ...
Prediction of water-adulteration within honey by air-line de-embedding waveguide measurements
(ELSEVIER SCI LTD, JUL 2021)
An efficient de-embedding air-line microwave method has been proposed for accurate relative complex permittivity, epsilon(r) = epsilon(r)' - i epsilon(r)'', measurement of water-adulteration level within honey. It could ...
Parameter Retrieval of Samples on a Substrate From Reflection-Only Waveguide Measurements
(Institute of Electrical and Electronics Engineers Inc., 2021)
A microwave method has been proposed for constitutive parameters' extraction of samples on a known substrate. The advantage of this method is that it relies on noniterative reflection-only (air- and metal-backed) scattering ...
Coupling analysis between resonating metamaterial slabs using scattering parameters
(ELSEVIER SCI LTD, SEP 2021)
Metamaterial (MM) slabs in close proximity can couple with one another. This coupling can modify the electromagnetic response of the overall MM structure involving individual MM resonators. The signal flow graph technique ...
Surface curing effect on reflection response of hardened cementitious mortar samples
(ELSEVIER SCI LTD, NOV 2021)
Surface curing effect of hardened engineering cementitious mortar (ECM) samples with distinct water-to-binder ratios (w/b) is analyzed by recording amplitude of reflection response vertical bar Gamma vertical bar or ...
Improved line-line method for propagation constant measurement of reflection-asymmetric networks
(ELSEVIER SCI LTD, MAR 31 202)
A new formalism using line-line measurements is proposed to improve the accuracy of propagation constant measurement of reflection-asymmetric networks using non-calibrated scattering (S-) parameters. For this measurement, ...
Determination of error-corrected full scattering parameters of a two-port device from uncalibrated measurements
(ELSEVIER SCI LTD, FEB 28 202)
A methodology relying on relating terms of a two-port error network to the scattering (S-) parameters of a two-port network or device is applied to extract its full S-parameters. The new methodology has only one sign ...
Improved Method for Permittivity Determination of Dielectric Samples by Free-Space Measurements
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022)
A new deembedding technique is proposed for relative complex permittivity epsilon(r) determination of dielectric materials using gated free-space measurements. Its three main features are 1) it does not require any formal ...
Mechanical and Electromagnetic Properties of Self-Compacted Geopolymer Concretes With Nano Silica and Steel Fiber Additives
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, IEEE-INST )
Mechanical and electromagnetic properties (over 2-16 GHz) of self-compacted geopolymer concrete (SCGC) samples with different amounts of nanosilica (NS) and steel-fiber (SF) have been examined. From the mechanical tests, ...
Determination of Propagation Constants and Wave Impedance of Non-Reciprocal Networks From Position-Insensitive Waveguide Measurements
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, MAY 2022)
A microwave method is proposed to determine the forward and backward propagation constants (gamma ⁺ and gamma ⁻) and the wave impedance ( $z_{w}$ ) of reciprocal and non-reciprocal microwave networks whose positions are ...
