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102 Threads found on edaboard.com: Terminal Hfss
[ You were probably looking at a simulation using a terminal port. My preference is to use a modal port with dimensions that resemble the particular feed line. Look at the on line documentation for more details and information. Regards, Azulykit
Hi, When we design an antenna in CST or hfss, we define "waveport" at the feeding terminal with a "rectangular cross section". But practically we feed the antenna by SMA connector connected with a 50 ohm coax. My question is why these EM software use "waveport"? Why don't we just place a SMA connector in CST/hfss and simulate? I (...)
For Filter design Driven mode is good specially if it is waveguide based filter. As in S-matrix solutions will be expressed in terms of the incident and reflected powers of waveguide modes. In case of microstrip based structure you can choose Driven terminal, as S-matrix solutions of multi-conductor transmission line ports will be expressed in te
HI, i have designed an cavity backed antenna in driven terminal using two co-axial coaxial feed length is 40mm..if i assingned air as material to the cavity i can run the simulation without the error and my return loss value is less than -10db.if i am assigning copper as material to the cavity i am getting very low return loss.what mat
In hfss, I'm trying to create a simple cylindrical parallel plate capacitor, but I'm having issues assigning wave ports. I'm using a driven terminal solution type in hfss V17.1 I've created a dielectric of quartz as a cylinder with radius 25mm, depth 20mm. I've created two sheets, each with radius 17mm (half the area of the (...)
128747 I want to design a transmission line for my power amplifier match network. Firstly I draw a path in virtuoso ,then I export the GDS file to hfss, but I need one end terminal of the MT line connected to GND . how can I do this in hfss .PLZ tell me ,thanks a lot
Hi, I am a student from Panama working with hfss. Currently I am just getting to know how to use hfss. I am trying to implement terminal excitation but the option is not available even after following the instructions presented in the help section of the program. Help would be much appreciated; please and thanks
Hi kagawa, The error is telling you that the port needs to be in contact with at least two conductors -- that's how driven terminal works. If you're just trying to excite a slotline mode, a Driven Modal may be better for you. Good Luck
Are you sure? It looks like terminal 1 is just the outline of the face of trace 1, which is FR4 epoxy, not a conductor. I'm more familiar with driven modal than driven terminal solutions, but I don't think it likes assigning a terminal on the epoxy.
Hello I designed a simple corner reflector with hfss and I set terminal impedance to 75 ohm.Here is my hfss output S11 and input impedance of my antenna. 126392 (So at F=8 Gighz we have S11=Gama=10^(-10.7358/20)=.2905 126393 (as you see at the F=8Ghz image part is approximately around 0 and so w
Hello, I have a problem in hfss defining the ports for striplines as voltage gaps. The striplines have two GNDs, so when I use the lumped port (with Solution type Model or terminal) I get the error saying I have too many terminals. a. Can you please send me an example taht include the correct definitions? b. Any documentation where (...)
The file you attached runs fine for me. However, I'm not sure why you have it set up as a driven terminal simulation. I switched the simulation driven modal and the simulation data was better -- your antenna just seems to be very poorly matched to the port impedance (50 Ohms).
Hello what is antenna input impedance variable in hfss? terminal Port Z0 or terminal Z parameters? Thanks
What do you mean by "real results"? Also, is there any particular reason you're using driven terminal? Usually if you're referring to certain modes, e.g., microstrip modes, you want to use driven modal. The scattering parameters from a driven modal simulation will of course give you the coupling between the lines.
Salam, Hello I have a problem in defining the waveport in the driven terminal solution type in the hfss. I do not have the below steps (check the attached image) as those existing in the hfss V10 User Guide> I am using hfss v13. Once i go for hfss --> Excitations --> Assign --> WavePort, i get the (...)
Hello, I am using Driven terminal for my simulation with some 50Ohm CPW waveguide. On getting the results, I want to simulate for the given power in dBm, how much current I will end up running through some sections. However in Driven terminal the excitation is in terms of incident voltage. May I know if I should take this voltage as Vpp, Vr
Port refinement, process hf3d error: Too few conductors were found on port 1. There should be one conductor for each terminal, with one additional reference conductor. Unintentional contact between conductors may cause this error.. (4:06:34 PM Dec 30, 2014)
Hi, 1) make sure the rectangle is drawn properly (assuming you're using driven terminal lumped port) and check the material assignment for the reference ground 2) not sure what execution error is it. I once had it and it was because i did not have enough hard disk space. you can check into this area. Natnoraa
Hi all, Newbee, first post, and still learning the rules and etiquette of this place. Be easy, k. Here's the synopsis: I'm running an hfss driven terminal solution. The design is a spiral transformer--a single loop primary around a flat archemedean spiral of a few turns. I've read in various places that specifying port impedance does no
I am modeling a microstrip patch antenna using driven terminal solution and coax with waveport feed in hfss. Can I know in hfss which TEmn, TMmn, TEM modes are excited? Where can I see this info in hfss? Also, when do I use the driven modal or the eigenmode solutions? Or what information do they give that is different (...)