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60 Threads found on edaboard.com: Driven Modal
S-parameter evaluation is a result of a sweep calculation for a driven modal setup. This is very basic fair which is is extensively treated in the first couple of tutorials. I would advice you follow these.
Welcome abuzaid10, Is this supposed to be a stripline coupler? In any event, I would always go with a driven modal solution for coupler design.
Hi. I'm simulating a 2.4Ghz slot antenna. Everything is well but when I do the Analyse all on HFSS v.13, this error pops up. HFSSDesign1 (drivenTerminal) Port refinement, process hf3d error: Too few conductors were found on port p1. There should be one conductor for each terminal, with one additional reference conductor. Unintent
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.
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).
i solve this model on both driven model and driven terminal. on increasing sweep i still get two different data , it dosen't show me any warning that your solution is not converge. so please tell me what i do. 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 (...)
modal driven lumped port is perfectly balanced, especially in the case of a simple dipole and feed at the center.
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 from the (...)
Hi, I want to find the resonant frequency of a DGS structure. But HFSS is showing two different results, one for driven modal and the other one for Eigen Mode. Can someone say which is the exact resonant frequency and why there is this deviation? I am yielding 5GHz in Eigen mode (mode1) and 6GHz in driven modal (...)
100140Hi everyone, I have a problem with my design. I don't know how to insert the SMA connector to the horn antennas. Could you give me some ideas about that? + What solution type should I choose (driven modal or Terminal) ? + The excitation is lumped port or wave port ? + My antennas material is FR4, so what is the
Welcome atemme, I don't have an example, but it sounds like you're off to a great start. What you want to do is place a waveport (in a driven modal simulation) on the edge of your air box that covers both of the wires' ends. To ensure that you are exciting the correct mode, draw an integration line between the two lines. Be sure to look at the fi
From HFSS help file: modal For calculating the mode-based S-parameters of passive, high-frequency structures such as microstrips, waveguides, and transmission lines which are "driven" by a source, and for computing incident plane wave scattering. Network Analysis is the default and functions as before. Composite Excitation provides a method for
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
I built a microstrip line in HFSS (lumped port, driven modal) and get the S parameters, I use MATLAB to convert S parameters to ABCD parameters. Then use formula to caculate characteristic and propagation constant: Zc=sqrt(B/C) gamma=acosh(A)/L. However, the phase constant beta is always smaller than I expect. The TL is 26um wide, substrate di
I'd still go with driven modal and a waveport; as long as nothing really changes with your feed setup. There is a tutorial for a basic patch included with HFSS 13. We you want to simulate Microstrip Patch Antenna in HFSS ,it would be better to choose Lumport Excitation NOT waveport...
Hi I am simulating a filter with HFSS 13 driven modal When I mesh at different frequency I have a very big difference in the response Attached is a picture for meshing at 77 and 75GHz Thanks79209
I have designed a helix antenna. I used antenna design tool kit in HFSS to create the model. to analyze the model I changed the solution type to driven modal but a message appeared: terminal 'coax_pin_T1': terminals are not used when the solution type is driven modal. Is my analysis in this situation correct? in fact i (...)
first what version of HFSS do you work?and then check the solution type,it should be driven modal if solution type is on driven terminal,this error will appear. Good Luck.
Use driven Terminal rather than driven modal for your excitation... I have also attached an example file that shows several setups for various transmission lines in driven Terminal. Have Fun