yefj
Advanced Member level 4
Hello,In the Time domain simulation in CST we have time steps .
Based on the text bellow,how exacly small mesh makes time steps smaller?(or larger)
I cant see the logical link between the two.
Thanks.
"CST STUDIO SUITE automatically calculates the appropriate excitation time pulse from the frequency range setting. The default Gaussian-shaped pulse guarantees a nonzero spectrum in the frequency domain’s band of interest, which allows an accurate calculation of the S-parameters.
Because the time step Dt is proportional to the smallest mesh step, it can be increased by avoiding unnecessarily small mesh steps. Here PBA allows the discretization of thin wires or thin microstrip lines without using a mesh step for the wire radius or the conductor thickness. As can be seen in the picture above, the Ratio limit setting controls the creation of small mesh steps.
Regarding the choice of an appropriate upper frequency limit, two points have to be considered: you should avoid a) the excitation of resonances at higher frequencies and b) a large increase in the number of mesh points.
Based on the text bellow,how exacly small mesh makes time steps smaller?(or larger)
I cant see the logical link between the two.
Thanks.
"CST STUDIO SUITE automatically calculates the appropriate excitation time pulse from the frequency range setting. The default Gaussian-shaped pulse guarantees a nonzero spectrum in the frequency domain’s band of interest, which allows an accurate calculation of the S-parameters.
Because the time step Dt is proportional to the smallest mesh step, it can be increased by avoiding unnecessarily small mesh steps. Here PBA allows the discretization of thin wires or thin microstrip lines without using a mesh step for the wire radius or the conductor thickness. As can be seen in the picture above, the Ratio limit setting controls the creation of small mesh steps.
Regarding the choice of an appropriate upper frequency limit, two points have to be considered: you should avoid a) the excitation of resonances at higher frequencies and b) a large increase in the number of mesh points.