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53 Threads found on Hfss Floquet Port
Hi I am a new user of Ansys hfss. I am currently having some floquet port difficulties for my design. I have done the tutorial for floquet ports that is available in the learning guide. However, when I try to assign the floquet port at one of the faces this error message (...)
Dear friend, Do you have any tutorial or reference to learn defining floquet port in hfss v11? Thank you very much.
hi, I am using hfss for UNIT-CELL simulation. I want to know how to change the incident angle of plane wave in floquet port. I will be great full to you if you suggest In the floquet port wizard, check the "use scane angles to calculate ..." you can set incident angle, phi and theta, respect to the global
A guide to floquet port in hfss v11
I'm trying to simulate a hexagonal unite cell with floquet port in hfss 1. I used a lattice coordination system, as shown in the picture? Is that I reduced the hexagonal unit cell to the rhombic unit cell (that rhomb
simulating a FSS unit with floquet port, when setting floquet port ,post processing, deembed distance how can i set the value of deembed distance need your help ,and thank you
Hi, everyone I am now using hfss version 12 to calculate S11 and S21 of a simple layer dielectric. floquet ports and M/S B.C. are set up in the simulation. For the floquet port, the plane wave incident angle is zero in default, but I want to use an oblique incidence(for example 10 deg). What should I do (...)
This was a real problem for my when I was working on my thesis, but finally I found the answer. How much distance for floquet port in hfss? Well, the answer to this question is rather complicated. Yet the distance could be obtained easily for each structure, frequency, and incident angle. As you know when a periodic surface is (...)
Hi everyone, understanding the problem floquet port in hfss is not measured directly but can use the media parameter settings (s) see and check directly it will be directly
Hi, I am using hfss for the Unitcell, I wants to find S21 as function of frequency for different incident angles in floquet port. please anyone could suggest me how to change the incident angle of plane wave in floquet port.
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 (...)
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 (...)
Hi, I am a new user of hfss and also a newer of electromagnetic theory. I want to simulate a periodic model using floquet port (with normal incidence). When I configured the excitation parameters of floquet port (in the Tab floquet port -> Modes Setup ), I found that (...)
Dear huiliangxu, Enjoy! Go and read: and see if you can get what you want from the attached files on Ansoft's PBG training in hfss. Hope these helps, Dave
who can tell me the difference between radiation boundary and PLMs in hfss? thanks!
I want to simulate the paper "Influence of hole size on the extraordinary transmission through subwavelength hole arrays", but there is always an error: port 'floquetport1': The exterior boundary of the faces for a floquet port must consist of pairs of parallel and equal length segments, displaced from each (...)
how can i model an infinite array antenna by using hfss? could you send an example of this. regards...
Hi everyone, I need to simulate the square unit cell of a cpw-fed slot antennas array with master/slave boundaries in hfss. The array lattice must be skewed of a distance d in order to suppress grating lobes due to the size (1.2λ) of the unit cell. This turns out to be a triangular lattice along the scan direction.
Hi is any one knows how to simulate refelction phase of an EBG at grazing angle? I simulate it with masteer/slave BC and floquet port (upon an example) but I don't know how to determine the incident angle? In ansoft designer for grazing angle the result becomes some NAN values!
I want to assign a face in hfss with floquet port but i get an error that floquet ports may not touch an object whose material is lossy. how do i assign my port with floquet? I need the floquet port and i need to keep my lossy (...)
i don't want use the Master-Slaver BC and floquet port to solve the problem, which recommended by hfss hand book. i have draw a 8*8 (finite-unit) FSS in hfss 11, and just care about the 4*4 units in the central area. How should i set the boundary condition and Excitation?
Hello, I have a problem calculating the phase of the reflection coefficient for an AMC material. My structure is formed by a silicon substrate and 2 oxides on top of it. The AMC properties are generated by a spiral strip of metal placed in the bottom oxide at the interface with the top oxide. I use hfss v11 to simulate it. Since the single spir
plz, can any one help me to simulate Split Ring Resonator by using hfss. I try to resimulate the design in the attached paper, and i use floquet port for excitation and Master/Slave boundary to repeat the structure, but the result wasn't matched that in the original paper. i want to know
Hi, Have you get your problem solved? I have try floquet port and wave port. To plot the reflection phase in hfss, just go to "hfss" -> "Results" -> "Create Modal Solution Data Report" -> "Rectangular Plot" after click on "Rectangular Plot" a new trace window will appear here you can (...)
hi,all i'm trying simulate periodic structure in Collin's book " foundations for microwave engineering" chapter 8 page 552 ( capacitively loading of coaxial line),by hfss, I want define Master and Slave and floquet port, but i don't know how consider master and floquet? i will be great full if any suggest.
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. (...)
any one can upload hfss or CST file of reflectarray please
i am doing my project in rcs reduction of frequency selctive surfaces.. i am using hfss 13 for simulation i selected a unit cell and upo validating i gt an error as hfssDesign1 (DrivenModal) port 'floquetport1': The exterior boundary of the faces for a floquet (...)
Hi all, I am now modelling a reflectarray cell element in hfss, but come across a problem when setting the floquet excitation. I have drawn an airbox, four sides of it are assigned with Master/Slave boundaries and the bottom side left with empty and align with the ground of the cell element. The top side is set as 60mm away from the upper rectan
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 (...)
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 (...)
I think this will help you
are u getting errors or results are weird? if that is copper u will have currents flowing around the boundary... The error is boundary overlapping error when performing validation check. Results are not weird for this case, as I am looking for S parameters only (reflection and transmission), but still a little diffe
Hi all...This is Yugandhar. I am working with hfss.I have 2 doubts. Can anyone guide me my multi layered problem analysis; hfss results and closed form solution results are matching only at a particular height. If I try to change the dimensions of my model, results are invalidated(hfss and closed form solutions are not matching for th
I really don't understand what you are saying. I am posting the image of the unit cell and the research paper I am implementing. As you go through the research paper, its fig.3. that I am talking about. Aren't there any settings in hfss that would simply require some changes.or you could further explain what you said about the sin and cosine.
i took a look at the paper. they used PMM for different incident angles... in hfss or any FEM solver, you are the only one responsible for the design! and believe me, it is simple. i try again: 0- i assume 2D, xy plane. 1- you have a freq range with their k values and teta 2- put in the source expression, the x component of your incidence kx=k*cos
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
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 (...)
hi. If your purpose is to show the fields in your structure,I know how it is done. in my design, i used wave port,solution type:driven modal,i had a radiation boundary. After selecting the desired part of design, you should this steps: right click-plot fields-select E or H or... and then hfss-fields-animate to see the wave motion. I hope, hel
Hi, any guys can tell me what is advantages of hfss11 vs hfss10? Thanks
Hi, I need help for setting floquet ports for the simulation of the unit cell of an infinite array in hfss. The unit cell is made up of two orthogonal CPW fed folded slot antennas, each terminated with a lumped port with an opportunely chosen impedance. An opportunely polarised plane wave (...)
You can't. hfss does not give you this information nor allow you to specify what modes to be input to the port.
Set a periodic boundary condition (master/slave) so that the model is effectively infinite in one transverse direction. Then, choose an appropriate excitation. Waveports are not appropriate because they force the fields to be zero at all their boundaries. (For microstrip/CPW this does not matter, as long as the waveport is big enough that fringi
You may want to be careful in your setup. TheArcane has a good point. Unless you defined the feed of the patch antenna with a 50 Ohm RLC boundary condition or a lumped port definition with a 50 Ohm reference, your antenna is not matched and is rather left OPEN!! This will of course lead to very strong reflections. As a solution, ensure your ant
HI I want to simulate array using floquet port and master ,slave boundry with hfss v.12.I need circular polarization,and I do not know ,how must do it.can anybody help me??????????? thanks a lot
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 (...)
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
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 ?
This tutorials explains how to do that.
Dear all, I am planning to simulate, and in a single setup, an FSS-Antenna system. I need to study the effect of different field patterns of a source antenna on the performance of an FSS structure. The simulation scenario has the following givens: 1- An antenna, in both the radiative-near-field (Fresnel region) and far-field (Fraunhofer region),