Nov 7, 2019 #1 N Nhera Member level 1 Joined Oct 12, 2015 Messages 36 Helped 1 Reputation 2 Reaction score 1 Trophy points 8 Activity points 293 Sometimes the delta S value in HFSS is shown as N/A. What causes this?
Nov 7, 2019 #2 B BradtheRad Super Moderator Staff member Joined Apr 1, 2011 Messages 15,178 Helped 2,899 Reputation 5,810 Reaction score 2,982 Trophy points 1,393 Location Minneapolis, Minnesota, USA Activity points 113,700 What does N/A mean Click to expand... 'Not applicable' =usual meaning.
Nov 7, 2019 #3 V volker@muehlhaus Advanced Member level 6 Joined Apr 11, 2014 Messages 3,187 Helped 1,070 Reputation 2,142 Reaction score 1,136 Trophy points 1,393 Activity points 20,246 Nhera said: View attachment 156390 Sometimes the delta S value in HFSS is shown as N/A. What causes this? Click to expand... For the first pass at that frequency, there is no previous S-parameter value to compare with, so deltaS cannot be calculate -> not applicable.
Nhera said: View attachment 156390 Sometimes the delta S value in HFSS is shown as N/A. What causes this? Click to expand... For the first pass at that frequency, there is no previous S-parameter value to compare with, so deltaS cannot be calculate -> not applicable.
Nov 7, 2019 #4 N Nhera Member level 1 Joined Oct 12, 2015 Messages 36 Helped 1 Reputation 2 Reaction score 1 Trophy points 8 Activity points 293 volker@muehlhaus said: For the first pass at that frequency, there is no previous S-parameter value to compare with, so deltaS cannot be calculate -> not applicable. Click to expand... I understand the first pass. But why the 8th pass? What possible reason could there be for delta S to be not calculated
volker@muehlhaus said: For the first pass at that frequency, there is no previous S-parameter value to compare with, so deltaS cannot be calculate -> not applicable. Click to expand... I understand the first pass. But why the 8th pass? What possible reason could there be for delta S to be not calculated
Nov 8, 2019 #5 V volker@muehlhaus Advanced Member level 6 Joined Apr 11, 2014 Messages 3,187 Helped 1,070 Reputation 2,142 Reaction score 1,136 Trophy points 1,393 Activity points 20,246 Nhera said: I understand the first pass. But why the 8th pass? What possible reason could there be for delta S to be not calculated Click to expand... Additional meshing frequency oder additional convergence criteria?
Nhera said: I understand the first pass. But why the 8th pass? What possible reason could there be for delta S to be not calculated Click to expand... Additional meshing frequency oder additional convergence criteria?
Nov 8, 2019 #6 N Nhera Member level 1 Joined Oct 12, 2015 Messages 36 Helped 1 Reputation 2 Reaction score 1 Trophy points 8 Activity points 293 No. Only the simple delta S criteria, only a single frequency adaptive meshing.
Nov 9, 2019 #7 V volker@muehlhaus Advanced Member level 6 Joined Apr 11, 2014 Messages 3,187 Helped 1,070 Reputation 2,142 Reaction score 1,136 Trophy points 1,393 Activity points 20,246 Nhera said: No. Only the simple delta S criteria, only a single frequency adaptive meshing. Click to expand... I have difficulties to believe that - look at deltaS which jumps back to very large values after the N/A in pass 8. I'm not an HFSS user, but I only see that behaviour in other FEM if there is multiple criteria or frequencies for mesh refinement.
Nhera said: No. Only the simple delta S criteria, only a single frequency adaptive meshing. Click to expand... I have difficulties to believe that - look at deltaS which jumps back to very large values after the N/A in pass 8. I'm not an HFSS user, but I only see that behaviour in other FEM if there is multiple criteria or frequencies for mesh refinement.