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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 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
Dear friend, Do you have any tutorial or reference to learn defining floquet port in hfss v11? Thank you very much.
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
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 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
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 (...)
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 (...)
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 (...)
Hi , How can i find the dimensions of the hfss wave port?. I know that it exist a calculator to do that in and for 50 Ω TL only, but i want to determine the size manually for TL feed not 50 ohm. is there any exact rule ,i've read a hfss doc but i'm not convinced when comparaing with results of my simulation. help pl
Hi,everyone: I have been simulating EBG structure for a few days, reflection phase is key point to me. I am using post-processing to identify the reflection phase, as I know, it's a common mehtod recommoned by many people. When using hfss v11, floquet port is a trick to slove the problem, however MY QUESTION is the reflection phase (...)
hi i am trying to do some simulation in CST . but when i try to use FSS template which automatically set up floquet port in zmin and zmax. but when i try to run the simulation it shows that it can not run the simulation as it contains disprsive material at zmin and zmax. how i can shift the floquet port to nodispersive (...)
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 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
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 (...)
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.
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 (...)
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
Hi My question is that can we simulate A Frequency selective surface using some other ports like waveports?? in hfss OR we can only use floquet port for simulating the Frequency selective surface? If it is possible then tell me or share some tatorials with me.:wink: Best regards:
Hi, I am trying to simulate a simple rectangular waveguides to check how hfss simulation works. Basically, I specify waveports with 3 modes. I was running from 1-25GHz. My cutoff freqs are TE10 = 9.72GHz, TE20 = 19.44GHz, TE01 = 24.19GHz, and TM11 = 26.07GHz, ... I didn't have any problems when I had 3modes defined for each port. When (...)
Hi all, I am fairly new to EM field simulation. I am trying to simulate a 4-metal layer laminate with drilled vias - the bottom metal is GND. All my vias are shorted together. The objective is to quantify the inductance between the via top metal and the bottom GND plane. Please see the attached model in the zip file. When I define the lumped
Hi, I was wondering how does one feed a stripline with a lumped port in hfss. For microstrip, you would make a rectangle from the upper conducter line to the the ground and insert an integration line from bottom to top. How does one do this for stripline when you have two ground planes (top and bottom) and the conductive line in the middle
Hi, I am currently start to explore the hfss v9.2. Before that, I have learned that there are wave and lumped port for the simulation. My question is if I would like to simulate a structure (assuming it a retangular model), it is always a "must" that I need to draw a 2-D vertical square at the input and output and assigned it as a (...)
hi i suggest you refer Getting Start hfss
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
I had this problem with hfss 8.5. It was somehow related to the license server (FLEXLM). I had to reinstall both hfss and Flexlm, and that had solved the problem. There could be some problem runing the license server on the Windows Server 2003. :D
who can tell me the difference between radiation boundary and PLMs in hfss? thanks!
Dear all: Could you tell me how to set port on the multiple-layer PCB board in hfss, lump port or wave port? two results are quite different. Thanks a lot!
for whom ask about hfss waveguide port,here the dimension
hello! If I have a transmission line with a wave port at either end, and I run a FREQUENCY SWEEP, then will the ports be matched terminators for every frequency in the sweep? In that case, I won't get much information out of S11. Yes, you will see almost 100% transmition and close to 0 reflection for the lossless lines.
There were some things wrong with your design. I've changed your model a little bit. Take a look at the file. for explanation please take a look at the hfss tutorials. It is better to follow the tutorial first, since it explains ins and outs of the designs systematically. Regards, Shameem
I think that you can built an infinit array by an element of antenna in hfss, there is a fonction in this software which permit you to creat an arbitrary array from one.
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.
1. The lumped port looks OK to me. 2. "Meshing" means dividing the structure into small tetrahedrons so that it can be solved by finite element analysis. hfss automatically creates a mesh and then adds/removes tetrahedrons to optimize it. Usually this automatic mesh is OK. In certain situations you want to constrain the mesh in a certain way, for
I am using hfss to design a passive RFID Tag Antenna. I'm using a microchip with impedance 16-j380 and, therefore,I have to design a RFID tag with 16+j380 to get the impedance matching with the microship. When I define a lumped port in my design, I have to enter the resistance and reactance value of the lumped port. My question is that (...)
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 (...)
Hi, I want to simulate a dipole antenna in hfss with a wave port simulation. I want to figure out the change in input impedance of antenna as frequency is changed. I dont think using a lumped port lets me get this information. I dont want to use a CPW to interface with the antenna because then I will not know what the input (...)
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
I am having an hfss problem and am fairly new at this. I have a pc board with a differential trace. It is a 4 layer board with grounds on the sides and also on the other 3 layers. When I put a radiation boundary around this, the boundary lines straight up with the differential trace and the grounds. It looks like you would take a cross section
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. (...)