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Terminal And Hfss

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68 Threads found on Terminal And 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 (...)
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
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
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 (...)
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).
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 (...)
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 (...)
1) assign the second port (port 3) to the second terminal of the Rx antenna. Adding a port doesn't mean it is adding an excitation signal. S21 is the power received at port 2 relative to power input at port 1. 2)I'd recommend modal, but I'm not an expert on the issue. I use terminal solutions for differential signals and modal for (...)
If you are new to hfss, you should at least perform the tutorial with the patch antenna. Then check the help file for the terminal excitation. There is an example with vias.
Would please anybody complete this patch antenna that i have attached...!! I Am confused on how to excite a Coplanar waveguide fed.. and which solution setup would be applied Driven model or driven terminal, I read the Help section ... but technical terms is hard to understand. Moreover, I am new to hfss, considering a Good (...)
maybe your configuration is wrong, you should check hfss tools > option> hfss option >general >auto assin terminal port english is poor,i hope you can understand my words and also this can help you!!
Hello, I am simulating some lambda/2 series CPW resonators, and have been getting some disagreement between my results when simulating by Wave Port or Lumped terminal. They both show resonance at roughly the expected frequency, but disagree on order of a few hundred MHz. I am inclined to believe the wave port results as they are close to ADS Mo
I am trying to make some structure shown in the attach picture. This structure should have uniform near field magnetic field on one side of it. As it is differential mode, so I was trying to use driven terminal. But when I set the wave port, it says that no conductor found on the port. I am sure I set the material right and there do is conductor c
I am simulating a patch antenna in hfss with a probe feed. The probe is excited by waveport on a coax similar to the hfss example. My coax height is just 2mm and radius is 1.6mm. Coax pin is 1mm radius. My bandwidth frequencies are 2-2.8 GHz. I am using the Driven terminal solution. I am not sure if the size (...)
you can easily plot the input impedance by selecting "terminal Z parameter" and then Z11 as Z11 is nothing but driver side input impedance and i guess you need the same. I have simulated your structure, but it is poorly matched and at around 2.5 GHz re(Zin) says around 250 ohms which for perfect matching should be around 50 (...)
I have made a dipole antenna, and I drove the two differential input ports with the waveport in differential driven terminal mode. The simulation went well, but when I plot the far field, it was found that the field is actually the single input field, not with differential input. I tried both simulation mode: driven model and driven (...)