Search Engine www.edaboard.com

47 Threads found on edaboard.com: Permittivity And Permeability

How to check the possibilty of hysteresis in solid materials?

If I have a dispersive material with a complex permeability and permittivity and I want to know the possibility of hysteresis occurrence inside this material, how can I check for that or how to plot the hysteresis loop?

evaluation of S-parameter using HFSS

Hi Bukero, You need to write an expression for refractive index, permittivity and permeability in terms on SYZ parameters. If you have the expressions, you create an output variable and plot them with respect to frequency. If you are using Driven Modal solution, you take a look at the effective epsilon (...)

New material defining

Yes it is correct and also to define new material you should ave the knowledge of tat material properties like permittivity, permeability, conductivity and loss tangent, and is the new material is frequency dependent or independent also important, then try for defining new material is better.

Nicolson Ross Weir (NRW) method, CST data calculations using matlab

Dear all, i have CST data for S-parameters (s11 and s21) and i want to calculate for complex permittivity and permeability on matlab using NRW. I tried several times but is not giving me the exact result. I went through several materials but my code doesn't work still. kindly help me out

Fill factor Caculation

I'm modelling a metamaetrial slab on CST and get S-parameters from the results. Then I need to extract permeability and permittivity from the those parameters. I learnt a method based on the Lorentz Model, as mu(w)=1+(F*w^2)/(w0^2-w^2)+jrw Note there is a F called fill factor, but I don't know how to calculate in my (...)

how to plot s(2,1) in HFSS for microstrip patch antenna

thats right ... but without s21 how permittivity and permeability plots can be obtained for metamaterial antenna...... so that negative refractive index can be verified

Metamaterials: imaginary part of permittivity being negative

Hello dear friends, I'm working on a new metamaterial structure that have nonlinear properties with in a broad bandwidth. I have simulated the structure in cst and got the S11 and S21 of the structure. with the relations given in the articles calculated permittivity and permeability of the (...)

Modelling characteristics using FDTD

Modelling characteristics using FDTD I am modelling the effect of soil heaps on radio signals (Think radio communication between mine dumps.) and would like to know what permittivity, permeability and electrical conductivity values one should use in the FDTD. I am currently making some loose assumptions on (...)

FDTD soil characteristics

I am modelling the effect of soil heaps on radio signals (Think radio communication between mine dumps.) and would like to know what permittivity, permeability and electrical conductivity values one should use in the FDTD. I am currently making some loose assumptions on conductivity from a Geophysical book by Telford. What (...)

hi im trying to design metamaterial in HFُُ I would like to know do i have change Cooper properties (permittivity) and ferrite (permeability)? Or they have resonant mode themselves?

S Parameter extraction from Rsoft

Hi all, I am working on my thesis about infrared metamterial absorber based on Rsoft simulation. In order to use impedance match theory to explain the resonance. I need to plot permeability, permittivity , impedance and refractive index in a wavelength dependent manner. I get the matlab code to post process the S parameter. But when it (...)

relative permeability of ceramic?

Do you really mean permeability? That is a magnetic property and so the value is probably unity i.e. the same as air. If you mean permittivity then it depends on the ceramic. For example, alumina is 9.3-11.5 Keith.

How magnetic core can increase a resistance of an inductor in HFSS simulation?

Hi. I'm working with an inductor modeling with magnetic core by HFSS. In material menu, it has following properties, Relative permittivity Relative permeability Bulk Conductivity Dielectric Loss Tangent Magnetic Loss Tangent Magnteic Saturation Lande G Factor Delta H and my magnetic core has all the same (...)

Working code for extraction of meta material parameters

I have the proper code for extraction of meta-material parameters like permittivity , permeability, phase and impdeance steps to follow: 1) save ur s11 data as s11.txt 2) similarly save s22 -- s22.txt // argument of s11 as arg_s11 /// argument of s22 as arg_s22 3) use the code and specifiy the locations of these (...)

Understanding Single Negative and Double Negative metamaterials

Hello, Kindly discuss the properties of permittivity and permeability of materials, impact of their magnitude and sign on the behavior of materials. krishna prasad sristy

Permeability and Permittivity Extraction From Scattering Parameter

I am trying to design the split ring resonator proposed in Electromagnetic parameter retrieval from inhomogeneous metamaterials i.e FIG-2 of the paper in HFSS-11.After simulation i got exact match in magnitude and phase response of S parameter but when i try to extract permittivity and permeability using equation 9 (...)

Retrieve the effective parameters of metamaterial

Is it correct to say the imaginary part of permittivity and permeability should be positive? (mentioned in this paper)

Properties of Silicon Carbide

Hi, I am modelling high power waveguide loads on HFSS and CST. One material I need to model is silicon carbide. I cannot find anywhere a resourse that has the magnetic loss tangent and permeability. Also anything I find for the permittivity and electric loss tangent seems to contradict other sources. (...)

How PEC is defined in CST?

Hi How PEC is defined in CST? I mean the Electric conduct. , Relative permittivity , and relative permeability values?

Bandwidth and signal speed

I believe that they are uncorrelated, the velocity of propagation is given in terms of permeability and permittivity and is not a function of bandwidth. However, if you are talking about things like transfer rates then Shannon's capacity theorem states that maximum rate of guaranteed transfer is given as (...)