Free-space measurement of complex permittivity and complex permeability of magnetic materials at microwave frequencies

Abstract

Pnramerer trade-off for mrnimizing high-speed pulse disrortion on a microstrip line is in wsrigared. The sensiriviry nf physical parameters to conducror loss. dielecrric loss. and inpectiorl frequency is first or high resistivity, the dc attenuation could also be significant. Many researchers have derived empirical formulas for the effective relative permittivity [l-31, conductor loss [4-61, and dielectric loss [5, 71 for microstrip lines. However. it is not KEY TERMSTrade-off design. arreriuatiori. disper.tion. inflectton frequent?.. 5 13-522. ABSTRACTA fabrication method of strip-loaded waveguide on litliiiirn outdif fused lithium niobate substrate is presented. The fabricated waveguide provides good characteristics. such us single trunsverse niagnetic ( T M ) or electric (TE) polarization and without having a thick surface guide on the srrbsiraie. Also i r takes less rime io fubricaie the waveguide, and hence, less damage on the substraie is expected. A nunierical simulation shows ihat the normalized amplitude coriiours of the fundamental waveguide mode can be crpanded for eficien t fiber coupling or condensed for enhancing the electro-optic effect depending on ihe refraciive index of the loaded strip. The ouiput power profile of the waveguide, detected by a linear array of charge coupled devices. is in good agreement with that calciiluted nurneritally. 0 1992 John Wiles & Sons. lnc.

Magnetically Tuned Two-Component Microwave Metamaterial

“…In order to do that, consider a normal incidence of plane electromagnetic wave on an infinitely long metamaterial layer of thickness d. The full reflection R and transmission T coefficients are defined by [14] …”

Non-resonant Permittivity Measurement Methods

“…The reflection methods, also known as single-port methods, which measure the reflection coefficient of a guided wave or a wave in free-space [13], can be used for spectroscopy. In [14] such methods are reviewed and possible configurations for the measurements are presented.…”

Transmission Properties of Stacked SRR Metasurfaces in Free Space

“…To identify the nature of the electromagnetic propagation inside a structure, four methods have been commonly used. The first one is to retrieve the effective material parameters from simulated or measured scattering parameters [22]. The second one is founded on a refraction/wedge experiment [23].…”