Hi, friend! I dont know what you mean, about the hfss meshing. I dont know what you mean "a blue cell with red cells on either side then your meshing is bad."" One needs to be able to specify a non-uniform mesh across the microstrip so the center is not over-meshed." could you tell me in detail? thank you in advance!madengr said:Yes, that sounds right. The current line should snap to the center of the square edges that you are defining as the RLC boundry. It works just line defining a lumped port. One thing I watch out for in HFSS is the meshing. Look at the current densities on your conductors. It should be high at the edges and uniform. If you have a blue cell with red cells on either side then your meshing is bad. This will happen even when HFSS converges to the default of delta_S=0.02 dB. You may want to limit the mesh size on teh conductors until the current density is correct. One needs to be able to specify a non-uniform mesh across the microstrip so the center is not over-meshed. Ansoft needs to implement this fearture.
maverick09 said:Hi,
I have 2 coplanar strips on dielctric and ground plane. I am using a waveport at one end, with 2 modes to simulate, also a differential terminal. I have a load of say 25 ohms attached at one end, which I define by a rectangle with length equal to the gap between the two strips,and width of small thickness. I define a current line going from left to right ?....is this setup right?....also I am trying to calculate the Z0 and Z. I am not getting the same value of resistance (say 25 Ohms) applied as load (load resistance). I am using the reference impedance of 100 ohm for differential mode and 25 ohms for common mode, also the waveport is normalized to 50 Ohms......can anyone explain what am i doing wrong ?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?