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35 Threads found on Pmc Pec
I have very basic question about Master and slave boundary conditions. I know they are used to model the periodic structures and are used to plot dispersion curves. My question is how can we relate Master and Slave boundary conditions with pec and pmc boundaries.
I am simulating a cavity with fundamental mode frequency at 2.998GHz using Eigen mode solver of HFSS. For wake filed estimation I need to plot dispersion curves for Higher Order Modes (HOM). 90 degree slice with one pec and one pmc as boundary condition is used to study dipole modes. First ten Higher Order Modes are studied. Master Slave Bound
Hi! Greetings! I have doubts in simulating parallel plate waveguide in HFSS. 1. Two sidewalls of the parallel plates are assigned pec boundaries. Do I have to assign pmc boundaries to remaining two faces (which are not actually sidewalls, as parallel plates have only two side walls, which are already assigned as pec)? 2. Should it (...)
perfection is a hard word ... not shore about pmc , but there are conductor materials for electricity that can reach supraconductor stage. I think you refer to those with pec. Supraconductor behavior means that electrical resistence becomes zero. This is achieved by lowering the temperature of the material close to the temperature of liquid heliu
Hi guys, I am simulating a single unit cell of a reflectarray antenna using HFSS. I place the unit cell inside an imaginary waveguide (a waveguide with periodic boundary conditions, pec & pmc) in order to study the behavior of the unit cell. I excite the waveguide with an incident planewave and since the waveguide has periodic boundaries it supp
Hello everyone I want to design a metamaterial having pec-pmc boundary condition with TEM incident wave in HFSS. Can any one upload a set up file as a sample for me? Please help. Regards Pratyush
Hello everyone I am trying to design ELC based metamaterial in HFSS.I want to know how to assign pec,pmc boundary to it.I would also like to know how to use excitation such that Electric field is parallel to capacitor gap and other fields as shown in figure. ELC is placed on the top to substrate(not shown in fig.).Waveguide that encloses ELC has
Hi all, I want to simulate asymmetric SRR structures using transient solver. Because of the asymmetry I cant use pec and pmc boundary conditions and while using Periodic boundary condition I get the following error "Waveguide port touches periodic boundary condition". Is there anyway to get around that? Also can we use plane wave excitation to
What should be deembedding distance when a metamaterial unit cell is excited by normal incident wave while using pec and pmc boundary condition on transverse plane??
hi Master/Slave boundary are used for periodic structures that go to infinity but pec/pmc are used for structures that are electric or magnetic conductors, in fact if im right, you have to use Master/Slave boundary because your structure is periodic! regards red
Dear all, I want to get reflection phase plot in oblique incident. I know maybe I can use Master/Slave boundary condition instead of pec/pmc, could anyone give me some detail simulated steps ? Appreciate your help !!
as ashish said the CST base on FDTD but its not a full FDTD The CST time domain solver is based on FIT, which is closely related to FDTD. CST also offer other solvers (FEM, MOM etc.) But the topic of boundary conditions is not related to the solver engine. It is related to modelling metal boundaries (pec) for sid
In simulation of split ring resonator using HFSS is it mandatory to use Perfect Electric Conductor (pec) condition at top and bottom of Air Box where as Perfect Magnetic Conductor (pmc) boundary condition at sidewalls of Air boundary of air box.If it is so then why we require to do it and how to do it in HFSS? I had attached one of the structure fo
hi can anyone help me by giving some tutorial video on metamaterial design on CST MWS? there are some option of using unit cell boudary, peridic boundary or pec and pmc boundary . ican not decide which one i should use. also the transient solver do not support the peridic boundary. it will also be help ful if someone post some design files of m
Can anyone give me some knowledage or tutorial on how to simulate metamaterial on FuLLwave software by Rsoft. how to set PML, pec and pmc
pmc and pec does not give the same result every time, I have the same problem because I want to use periodic boundaries in cst (in hfss it works very good but slower)
Hello shahid78, It understand that :). The patch antenna I am simulating has H-plane symmetry, so I was using a pmc symmetry plane to cut it in half. It turns out that the scale was off on my graphs, as I had a -300 dB null at broadside on the x-pol at broadside for the H-plane, so that was distorting the graph. Silly me for not looking at
Peopple often use pec/pmc walls due to its simplicity, short simulation time, and easy post-processing. You directly have the magnitude and phase of S11 (reflection) and S21 (transmission). However, you can also use Master/Slave as BC(PBCs), but the simulation time is much longer (you can not use fast sweep in this case), and you have to manually
Hi Rancid, As you said electric boundary is analogus to Perfect Electric conductor (pec). magnatic boundary condition is for Perfect Magnetic conductor (pmc). These conditions are useful in creating walls, also for waveguide port. Regards
Just set its out boundaries to pmc.
i am trying to use pmc in my simulation. there is built in pec in the simulation software but no pmc. now i am wondering how can i model pmc ? what properties should i assign to the pmc block? i can specify the following properties in my simulation package permitivity permeability (...)
hi all: I simulated a perfect magnetic conductor using HFSS v.11(2 pec&2pmc walls), but the result of the reflection coefficient is not +1,the phase of reflection is about 141 deg operating 14GHz,the same as that of the absent pmc.Attatched file are my hfss file and photo of simulated phase. Please need to some help!
Who can tell me~ If a incident wave normally hits a perfect magnetic conductor, what's reflective coefficient and phase?The reflection is +1?
microstrip lines are quasi-tem structures. the electric field stays perpendicular to both the ms line and the gnd plane (pec). if you use pmc gnd plane, fields beneath the ms line would change very much, electric field making two loops around the edges of ms line (so that it can stay parallel to the gnd plane). crazy idea, if you can find a good
The planar transmission line has several types. Such as microstrip line,coupled line,coplanar waveguide,slot line. These transmission line's signal line and the ground plane are metal constitution (pec). I want to know that the transmission line signal line part is a metal and the ground plane uses perfect magnetic conductor(pmc) to substi
Hi,all I use HFSS V10 to simulate circularly polarzation wave incidence to the pec or pmc. If use LHCP wave or RHCP wave,polarization angle and polarization ratio hypothesis method? Thanks. kuanfu
hi piboo well if at the end you need vacuum box then whats the purpose of modeling pec why not just model vaccum box and use the required boundary conditions for pmc regards
I wanna add a DC E-field to the unit SRR cell, the vector of incident wave as the FIGURE(1). I use the pec and pmc to define the periodic boundry on x-z plane, wave ports applied on right and left facets, now, how can I add a uni
there is pec material available in CST which we can use to model metal parts in our structure. i want to know how i can model some part as pmc? is there pmc material availbe and if not then anybody know how to model pmc structure. thanks
I want to simulate metamaterial's S parameters in HFSS. I want to use periodic boundary conditions instead of pec and pmc. I cannot use master/slave boundary counditions with waveports. Can you help me?
Hi, I'm having some problems in implementing a 2D near to far field transformation with Matlab. I'm following Taflove's book, but I can't get it work! I have few questions: - Do I need both E and H tangential fields, or I can assume a pec or pmc inside my surface and then use just one of them? - I'm using the fft matlab function to get the f
Hi to everybody, I usually work on simulating Metamaterials (SRRs, spirals, CLLs) and EBG/AMCs (mushrooms, hilbert resonators...) with HFSS, applying the common two sides pec BC and two sides pmc BC to a single unit cell, with a Waveport as excitation. But maybe there could be some problems if the resonator (in the planar case) is not symme
Hi All Here is my Hsff simulation with different ground plane accoring to Fan Yang's paper
Hi everybody, i have a problem defining my structure in CST MWS. I need to model a cylindrical resonator with a hybrid boudary condition: pec condition on the lateral boundary and pmc condition conductor on the base faces. As long as I know, this software uses always a brick background that one can fill with a pec or a user defined (...)
I solved succesfully big parabolic Cassegrain antenna (around 30 λ diameter) in MWS even without subgrids (6millions of cells + pmc + pec symmetry). I still don't believe subgridding a lot, I remember in 5.0 the farfield was incorrect when used MSS. I didn't tried 5.1 for this purpose yet best eirp