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77 Threads found on Floquet Port
Is this only for a plane wave? If so, just assign a perfect E boundary to the x-axis walls and a perfect H boundary to the y-axis walls. You could also use a floquet port setup with master-slave boundaries for a more complicated setup, as described in the HFSS help.
hi iam new to hfss...i am doing project in metamaterial absorber.i have to give floquet port for excitation...but i didnt know how to proceed...can anyone give some idea...
Hi everyone, I am using the HFSS to simulate the metasurface in order to get the resonant frequency. I have done this (around 2.4 GHz)by using Perfect E and Perfect M boundary, and 1 Waveport. Now, I want to try the floquet port and Master/Slave boundary. I followed the tutorial of HFSS (Get started with HFSS floquet (...)
In case of 2 floquet port with master slave boundary condition how to vary theta and phi for wide range of angles
Hello I am learning how to use HFSS and am trying to replicate a metasurface. The metasurface is designed for circular polarization so I am using floquet ports to simulate a unit cell. I turned on TE mode and also TM mode but with 90 degree phase in edit sources so that it would create a circularly polarized mode. Where I am having trouble is how t
Hello everybody ; I wish to have help please; analyzing the phase of the output S21 of my structure floquet ports under CST I obtained an opposite phase to that I obtained by modeling; the same phase, but reversed (multiplied * (- 1)); I think the error is in the direction of polarization of the ports but I do not know how to access their (...)
Hi sztr, You need to do pretty much what HFSS is telling you to do: ensure that the floquet port is touching orthogonal Master/Slave boundaries. There are some good tutorials included with HFSS that explain how to use floquet ports.
can you please explain more? Mode distance between the floquet port and the surface will allow evanescent modes to decay to a smaller level, increasing the accuracy of the result (which is based only on the fields corresponding to propagating modes). I have
What software are you using? i do not want to use the floquet port Why not? i can use a PEC in the Z + and - direction Are the mushrooms in X-Y? some one know if i must use a wave port or a incident plane wave and can describe me how to setup this kind of s
Hi , I am a beginner w.r.t HFSS and i want to use it for a whole new purpose. i.e for simulating solar cells. I am interesting in how light is interacting and getting reflected (absorbed) at different layers of my solar cells. (i have some periodic structures) To begin with, i modeled a simple solar cell : 1) Setup a 3 layer solar cell (glas
Welcome Vittal Rao, floquet ports need to be used in conjunction with master-slave boundaries. There is a good tutorial of this in the HFSS help. Good Luck!
Hi everyone I've got a basical doubt in the way floquetports are numerated in HFSS. My doubt is as follows: If I plot S(floquetport1:1,floquetport2:1). Am I plotting the S21 parameter of the TE mode or the S12 one??. I know that if you have a symmetric matrix that topic doesn't matter (...)
Hi to all; My question is that, Can we calculate the RCS of an FSS design in HFSS by using the floquet port? I have been told by some one that you should use incident plan wave to excite the unit cell of FSS and for that also change the solution setup in HFSS. Is there any way to calculate the RCS using floquet ports (...)
Angle of phi what will change? does it change the polarization angles? Angle of theta what will change?does it change the incident angles? If number of modes in floquet port be 1 what happens? For define in the design, TEM mode what i should do?
Hi, Anyone knows about how to check the angle variations in case of Frequency Selective Surface using the wave-port in HFSS. Actually i want to verify the results of FSS unit cell using floquet port and wave-port in HFSS. Please guide me how the task could be done. With Best Regards: Muhammad Idrees
hi , i am trying to simulate microstrip reflectarray with HFSS. I have used two master slave boundary condition and one floquet port excitation. Then in the parametric study i have varied the size of the patch but not able to generate the S curve of phase vs patch size. So please help me in this regard. Thanks
Hi.... I am applying master/slave boundaries with floquet port in a FSS structure and analysing by Interpolation frequency sweep. The problem is it is taking 2 to 3 days, Can anybody tell me How to use FAST sweep in these type of boundaries and Excitations.
Anybody knows valid excitation ports for using the finite array tool of HFSS? It gave me an error when I used floquet ports which makes sense. But I can't use wave port either as there are master/slave BC.
Hi I want to simulate an array antenna and measure its reflectance & transmittance So I build unit cell of my structure and define its bottom sheet as waveport. Then master/slave for its side boundary conditions is defined. At last floquet port is set to its up unit cell's sheet. After simulation, in S-parameters I couldn't find any resul
Dear all, I am new in using HFSS, and I need to simulate an infinite array of circular waveguide disposed on an hexagonal lattice, working at 15.25 . The radiating elements are covered by a layer of an anisotropic material. Such a test case is reported in the paper: S. Sajuygbe et al. "Wide angle impedance matching metamaterials f
Hi everyone. Normally, when simulating unit cell SRR of Metamaterial structure which is excited by H-field, we often put 2 wave ports and H-boundary parallel to SRR-Plane, E-boundary normal to SRR. is that right? I wonder there is other ways? Is this possible to use floquet port for Unit cell Simulation? How can I do it? Many thanks
Hi to all; I am using the floquet-port with master-slave boundaries but the confusion that i am facing is how to check angle of incident wave at the floquet port. While i follow this procedure Slave->Phase-delay-> phi & theta and have change the values in the phase-delay in slave boundaries where i use phi (Φ) as (...)
Can any one tell me that how much deembed distance for floquet port in HFSS should be kept for good simulation results in HFSS. Is there any rule for this distance or on hit and trial base. :grin:
Hi, i am using master/slave boundary + floquet port, but by seting scan angle 'Theta' in Tab 'Phase Delay' of Slave boundary Properties there are some problems like the design does not converge and simulation stops at 11th pass. While without doing this change the convergence is done in 6 pases only. Can you tell me the what problem is this ??
I could not able to figure out the following error port 'floquetport2': The exterior boundary of the faces for a floquet port must consist of pairs of parallel and equal length segments, displaced from each other by an integer linear combination of the lattice vectors.. Please help me out.
Hello all Am simulating a circularly polarized frequency selective surface using HFSS floquet port model In a unit cell configuration. In order to achieve circular polarization, i have defined port one wave one to 1W, 0 deg Phase, and port one wave two to 1W,90 deg phase. After running the model, how can i combine the (...)
Hi ! I am new to CSt MWS and I want to analyze a periodic structure, I use the unit cell as boundary conditions, so the software puts automatically floquet ports. But the "Set excitation" line in the "QuickStart Guide" does not get checked. I then run the Frequency domain solver and get results that are ok. The only way to get the "set exci
A guide to floquet port in HFSS v11
Hi knight87, I don't use CST, but you want something like "Master-Slave" boundaries alone the transverse directions, and an absorbing boundary on the opposite side from the floquet port. Good Luck
For those of use who need some things said in simple words before we start doing the difficult math.. It would be great if someone familiar with them could provide a succinct qualitative description of what is a floquet port, a floquet Mode, and what would motivate trying to apply them. ______________ Where we have been so far.. (...)
This tutorials explains how to do that.
In a infinite structure we know we can set BC as master & slave and floquet port to analysis, but when I want to analysis a 5*5 structure How should I set the BC and what port can we use? Because I need to create a TEM wave, and when we use radiation BC and wave port can't create a TEM wave. So hope someone can help with (...)
If your unit cell is either rectangular or square, then by solving for the first two modes (orthogonal polarizations), assuming you need no more than that, in the floquet port you know all you need to know about the polarization dependence of a structure at a given angle of incidence. If your structure symmetry is aligned with the modal excitation
Hi sc4rppph, As a disclaimer, I don't use floquet ports, but the setup looks correct to me as far as I know (HFSS 13). For the master/slave boundaries, you probably just want to use the specified phase angle rather than theta/phi for square structures. To get the dispersion diagram, set the phase angle of Slave X to a variable AngleX and phase ang
Hi I have attached two documents about floquet to this reply. I think these are interesting. GoodLuck
Hi, I'm trying to simulate the attached structure on CST using the FSS template. I don't really know how to assign the excitation signal (wave port), can you please take a look? I tried creating a wave port at Zmin, but received an error "port 1 is defined on the floquet port boundary at Zmin, and (...)
i am simulating a modal. the unit is hexgon and the grid is triangle. when setting the floquet port ,i wonder how to set the vectors a and b.8745187452 i wonder which setting is right?thank u
I could not find a solution on here, so I post a new thread. I have a floquet port design where the object (unit cell with perfect E boundary) overlaps with a master and slave boundary of region. I wanted to remove objects face which overlaps with the master/slave face, but it seems it would violet the object to retain its material (here copper)
hello, please explain about how to simulate this floquet modes in HFSS with more details. for example how to define or specify angle of incident to any of element ?
hello guys. i try to simulate reflectarray antenna element with t-shaped patch.i work with hfss and i use master and slave boubdary and floquet port for my periodic how can i excite my patch in x or y direction with floquet port??? and how can i see co-polarization and cross polarization from hfss for check (...)
I believe the floquet port must be on the outside perimiter of your setup, i.e. touching the background. For example, if you have a vacuum box around your simulation object, the floquet ports must be on the surface of this box.
Hi all can anyone help me understanding floquet port, what's it and how can I use it to simulate AMC or FSS in CST? please guide me,:sad: Thanks
I am trying to follow HFSS tutorial on floquet port but i am getting following error messageFailed to solve the problem due to lack of precision. The likely cause is that the frequency is too low..I have attached the tutorial and hfss file both.Any help will be greatly valuable to solve this error. Thanks
Hi i am working on a unit cell of a reflectarray patch antenna with slot coupled to a microstrip. I tested the antenna with a micro strip excitation. Now i need to test it by exciting the antenna using floquet port. So i put master and slave conditions floquet port and then what ? how to proceed after what are the (...)
I am modeling a periodic structure with a floquet port in HFSS. I have a tall rectangular box whose top face is a floquet port and bottom is PEC. a unit cell of teh peridodic structure is within the box. I have master and slave moundaries on the side walls. I would like to simulate a scattered field pattern. S11 at the (...)
Since reflect array has zero transmission as it sits on a ground plane, one floquet port is all you need. De-embed the floquet port to the point of measurement. For reflect arrays I usually de-embed to the surface as the phase of reflection on the surface is the quantity of interest for me. As an aside, (...)
I'm trying to design a planar phased array antenna consisting of circular dielectric waveguide for 15.25GHz applications(lattice is skew). i modeled hexagonal unit cell in hfss with master/slave boundary condition and PML. and then i want to see my anten impedance matching in all scan angle is good or no!! floquet port and PML toghether can be
You could add space to the top plane and bottom plane,too. And let the floquet port away from ur dispersive material. try it
Hi, I'm trying to excite a floquet port with a circular polarized wave, but I can't find the way. What I'm doing instead is calculating the results by calculating the fields for the floquet modes 1 and 2 [S(floquet1:1,floquet1:1) and so on... My goal is to mesure the axial ratio and the S parameters. (...)
Hi guys, I am trying to simulate one unit cell of the reflectarray element in HFSS, to get the phase-size curve. My question is: when I put a waveguide port or floquet port above the patch, what kind of deemed distance should I use? Should be deemed at the patch surface or at the ground surface? I think it should be deemed at the (...)