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Surface Impedance Mapping Using Sferics
IEEE Transactions on Geoscience and Remote Sensing, 2014Naturally occurring radio emissions from discrete sferics in the frequency range 500 Hz to 30 kHz have the potential for shallow conductivity profiling beneath the surface of the earth. A dual-channel time-domain receiver was constructed and used over selected geophysical targets.
Gavin T. Mogensen +2 more
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SURFACE IMPEDANCE TENSORS OF TEXTURED POLYCRYSTALS
Structural Stability and Dynamics, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tanuma, Kazumi +3 more
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The surface impedance of superconductors
Advances in Physics, 1964Abstract New measurements of the surface impedance of superconducting tin and tin-indium alloys at 3 kMc/s, obtained by measuring the bandwidth and characteristic frequency of a resonator containing the specimen, are reported. The results are compared in detail with the microscopic theory, those on the low temperature surface reactance being reduced to
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Surface Impedance of a Superconductor in a Magnetic Field
Physical Review, 1960Explicit expressions for the static magnetic field variation of the surface impedance in a superconductor are derived. Detailed consideration is given to the two limiting cases of the classical skin effect and of the extreme anomalous skin effect, with the static field either parallel or perpendicular to the rf current.
Dresselhaus, G., Spiewak Dresselhaus, M.
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Effective impedance tensor of a statistically uneven impedance surface
Radiophysics and Quantum Electronics, 1985Within the approximation of the perturbation theory, the authors determine the characteristics of the reflection of plane electromagnetic waves from a statistically uneven impedance surface with an nonisotropic roughness spectrum. They calculate the effective impedance tensor, the Fourier amplitude of fluctuations of the scattered field, and the total ...
A. S. Bryukhovetskii, I. M. Fuks
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Analysis of dispersion and impedance properties of infrared impedance surfaces
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013A stratified structure which supports the propagation of infrared surface waves is designed. The dispersion and impedance characteristics of the surface waves are studied in detail for an array of square patches. The field propagation of basic TE and TM modes at different frequencies are studied.
Mohanapriya Swaminathan +2 more
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2010
Abstract : We have investigated and determined how the tensor properties of an impedance surface can be shaped to control and steer surface waves in a very general way, all the while preserving phase information. Two findings made this possible. First, it was discovered through eigenvalue analysis that a TM or TE surface bound wave tends to favor ...
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Abstract : We have investigated and determined how the tensor properties of an impedance surface can be shaped to control and steer surface waves in a very general way, all the while preserving phase information. Two findings made this possible. First, it was discovered through eigenvalue analysis that a TM or TE surface bound wave tends to favor ...
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Analytical Modeling of Surface Waves on High Impedance Surfaces
2009In this paper, analytical modeling of natural modes is proposed for the rapid and accurate analysis of various high impedance surfaces (HIS) composed of dense grids of frequency selective surface (FSS) elements printed on an electrically thin grounded dielectric slab, and on a wire media slab.
YAKOVLEV A. B +6 more
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Surface Impedance and Granularity in Superconducting Cuprates
MRS Proceedings, 1990ABSTRACTThe rf residual surface resistance Rres is an important figure of merit for superconducting microwave devices and for establishing the homogeneity of superconducting surfaces. In granular superconductors not only are high residual rf surface resistance values Rres observed, but also strong field dependencies of Rres(T,ω, Hrf) and the penetraton
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Impedance modulation patterns for artificial-impedance-surface antennas
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013Artificial impedance surface antennas (AISAs) radiate by leaking surface waves from a spatially-modulated artificial impedance surface (AIS) whose modulation is designed to produce a preferred radiation pattern and polarization. Using the AISA radiation integral, a simple equation is obtained that quickly computes the modulation pattern for an AISA ...
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