Hello Mr. Bhargava I been enjoying your tutorials they are really helpful. I have question about this video you have placed the pin at end of transmission lines instead of at the of inductors and capacitors footprint pad. Does it make any difference on simulations by placing pin at the edge of capacitors and inductors mounting pads and at the end of transmission line connected ?
Ideally you should connect the simulation pin where you expect the component to start or finish on the pad but it doesn't make a huge difference upto decent amount of frequency range as usually the difference is only about 0.1 or 0.2mm and that doesn't cause too much of problem unless you are in mmWave range.
Thank you so much for your videos! Getting self-taught in ADS. Big tumbs up. I am doing a PA with input and output match and currently I am struggling to combine the two (independant) co-simulations into one layout. Could you explain how that is properly done?
Hi Carlos, Its not difficult but I don't understand what do you mean by "combine the 2 cosimulation into 1 layout"? You don't combine these in the layout but do that in schematic. I would recommend you to contact your local Keysight tech support team to discuss this in more detail so that they can help you.
Thank for your video! It worked fine for performing a sweep on a parameterized layout. But when I try to run an optimization on the same parameterized layout structure, I get errors all the time. "Can't find any data for range var 'freq' ". Can you help me please?
I'm planning on designing a PIN diode based phase shifter and I'm thinking about doing either switched line or loaded line. which one has less insertion loss and more accurate phase shifting? also, how do you create the ground patch?
Yes you can but Resistor is usually not recommended on higher frequencies as it will suck up the power so its not a good component for matching network. You can survive without resistor....😊
Hello Sir, Thank you for the videos. They have been of great help. I have one doubt. How can we check the performance of RF antenna for different values of input power. I wanted to obtain Input Power v/s Output Power graph. Also this would help in learning how the addition of a multiplier/regulator improve the overall efficiency.
How to add via from a top copper of a substrate to ground plane in the layout? Is it from insert via command? If yes, then should the via to be defined between cond and cond2 layer?
Yes, you can use Insert->VIA to drop in a VIA onto your layout. Whether you define VIA from top to bottom i.e. cond to cond2 or you want to use Blind VIA (i.e. you can start from top and stop on any in between layer) depends on how your PCB will fabricate it and you should use the same in your design. Hope this helps.
@@BhargavaAnurag In one of the lectures, when you imported substrate from schematic to layout then in the stackup both cond and cond2 layers are shown on the top of the substrate. I also tried to do the same and getting the same stackup in the layout but still I am able to define the via between cond and cond2 and after simulation when I am viewing the 3d then via is showing from top copper to the ground plane. How can a via be defined between conductors in a same layer? Is it that I am not able to understand the way ADS defines via and what is the difference between via and component via in via definition. Please help.
@@AK-ov2kx If two metal layers exist on the same level in stack up then there is no VIA required as you can directly connect them....😊 VIA is only applicable if you have to connect metal layers which are on different position in Z-axis and that is why it is called VIA i.e. Vertical Interconnect Access (VIA) For more help, kindly contact your local Keysight support team.
For EM Circuit cosimulation, substrate is not necessary as you already have simulated layout with EM and now you are only connecting electrical models like L, C, Transistor etc which doesn't necessarily require any substrate definition.
I have a question. When on layout, my pin symbol and text becomes very small? Where can I change that? I have gone through many options but still I am not able to increase the size.
Hi, You can set your desired size from Options->Preferences menu but sometimes things which are already in layout won't change but when you place a new component then it would be as per your new settings.
Sir, I have a question. How we can make an antenna circuit model or lumped element model using touchstone file? I have antenna model in CST and wanna make its circuit model. Waiting for your kind reply asap. Thank you.
@@BhargavaAnurag Thank you so much for your kind reply Sir. I would like to ask that how you have chosen that circuit diagram. I mean based on which criteria? My second question is; when I simulate my touchstone file after applying TermG to its one port it shows different S11 result as compared to the result when I just check touchstone file itself on S-Parameter view? Why these both results are different ?
I have read a book where it is mentioned to used Foster canonical forms for each individual resonance cure of S11 which means each resonance curve will get an RLC circuit for its equivalent modeling. Is it possible on ADS sir?
Thanks Anurag for these valuable videos. I have a question on this topic. while creating a layout components i added EM parameters but when i try to use those parameters in setting the dimensions of standard microstrip components (Pcells) it accepts that for the first components only then it starts to give me error for using the parameter with any other component!! is that normal? what is the mistake that you guess i had done? Regards
Hi Alaa, Its difficult to pinpoint what exactly might be going wrong here. I would recommend you to contact your local/regional Keysight tech support team to get help.
How to check the output voltage Vs frequency graph, output voltage Vs input power, and efficiency Vs load resistance? In ADS for RF energy harvesting circuit
when i try tuning my em cosimulation circuit, I get the following error A tune value has caused the simulation to fail Error detected by hpeesofSim during HB analysis 'HB1'. COMPONENT 'X8.em_data': MODEL FAILURE: The EM Model's database for X8.em_data is not complete for real-time Tuning. Simulate the cell first to complete the model database. Use the interpolation delta as the parameter sweep step. Error detected by hpeesofsim during HB analysis . Fatal error occurred while evaluating model 'MomCmpt' , instance 'X8.em data' .
My apologies for the delay in response. If seems you have a parametric EM data and trying to do tuning? If so, you need to double click on emmodel view under the cell and switch on Interpolation delta value. If you are unsure what to enter in interpolation column then simply enter the same step size as you used in EM analysis. Hope that will resolve your issue but if it doesn't then contact your local Keysight team for help.
I'm a beginner of RF design , and this video is very helpful to me, thank you !
Glad it was helpful!
Thank you for the tutorials
Glad you like them!
Thanks a lot for allvideos, a great help for me ;-)😀
You're welcome 😊
very helpful
Hello Mr. Bhargava
I been enjoying your tutorials they are really helpful. I have question about this video you have placed the pin at end of transmission lines instead of at the of inductors and capacitors footprint pad. Does it make any difference on simulations by placing pin at the edge of capacitors and inductors mounting pads and at the end of transmission line connected ?
Ideally you should connect the simulation pin where you expect the component to start or finish on the pad but it doesn't make a huge difference upto decent amount of frequency range as usually the difference is only about 0.1 or 0.2mm and that doesn't cause too much of problem unless you are in mmWave range.
@@BhargavaAnurag Thank you
Mr. Bhargava
Thank you so much for your videos! Getting self-taught in ADS. Big tumbs up. I am doing a PA with input and output match and currently I am struggling to combine the two (independant) co-simulations into one layout. Could you explain how that is properly done?
Hi Carlos,
Its not difficult but I don't understand what do you mean by "combine the 2 cosimulation into 1 layout"? You don't combine these in the layout but do that in schematic. I would recommend you to contact your local Keysight tech support team to discuss this in more detail so that they can help you.
How would you handle EM co-simulation, optimization when it comes to things that are purely distributed, such as a coupler?
Kindly watch this video: ruclips.net/video/HsZXTfB8SWg/видео.html
Once you have the parametric layout, you can run optimization or parameter sweep...😊
Thank for your video! It worked fine for performing a sweep on a parameterized layout. But when I try to run an optimization on the same parameterized layout structure, I get errors all the time. "Can't find any data for range var 'freq' ". Can you help me please?
That's a weird error. I would recommend you to contact local Keysight technical support to get help.
I'm planning on designing a PIN diode based phase shifter and I'm thinking about doing either switched line or loaded line. which one has less insertion loss and more accurate phase shifting?
also, how do you create the ground patch?
I would recommend to go thru relevant paper for 1st of your query to get right info. I couldn't understand your 2nd part i.e. ground patch.
@@BhargavaAnurag the line with via holes on the bottom of your filter
For impedance matching, you have used LC units for matching using Smith chart. can we use RLC circuit ?
Yes you can but Resistor is usually not recommended on higher frequencies as it will suck up the power so its not a good component for matching network. You can survive without resistor....😊
Hello Sir, I could not find the video that you placed the pins for the LPF layout. In which video did you place the pins ?
Regrds, Talha ONAT
King watch the Getting Started with Momentum video
Hello Sir, Thank you for the videos. They have been of great help. I have one doubt. How can we check the performance of RF antenna for different values of input power. I wanted to obtain Input Power v/s Output Power graph. Also this would help in learning how the addition of a multiplier/regulator improve the overall efficiency.
Pls contact your local Keysight tech support team for help
For the first case, I mean antenna cosimulation, can I check antenna radiation pattern after impedance matching? if yes, can you tell me how?
Yes, check this video: ruclips.net/video/nnfYYXagxnc/видео.html
How to add via from a top copper of a substrate to ground plane in the layout? Is it from insert via command? If yes, then should the via to be defined between cond and cond2 layer?
Yes, you can use Insert->VIA to drop in a VIA onto your layout.
Whether you define VIA from top to bottom i.e. cond to cond2 or you want to use Blind VIA (i.e. you can start from top and stop on any in between layer) depends on how your PCB will fabricate it and you should use the same in your design.
Hope this helps.
@@BhargavaAnurag In one of the lectures, when you imported substrate from schematic to layout then in the stackup both cond and cond2 layers are shown on the top of the substrate. I also tried to do the same and getting the same stackup in the layout but still I am able to define the via between cond and cond2 and after simulation when I am viewing the 3d then via is showing from top copper to the ground plane. How can a via be defined between conductors in a same layer? Is it that I am not able to understand the way ADS defines via and what is the difference between via and component via in via definition. Please help.
@@AK-ov2kx If two metal layers exist on the same level in stack up then there is no VIA required as you can directly connect them....😊
VIA is only applicable if you have to connect metal layers which are on different position in Z-axis and that is why it is called VIA i.e. Vertical Interconnect Access (VIA)
For more help, kindly contact your local Keysight support team.
Sir you haven't added substrate in your schematic window, is that fine
For EM Circuit cosimulation, substrate is not necessary as you already have simulated layout with EM and now you are only connecting electrical models like L, C, Transistor etc which doesn't necessarily require any substrate definition.
I have a question. When on layout, my pin symbol and text becomes very small? Where can I change that? I have gone through many options but still I am not able to increase the size.
Hi,
You can set your desired size from Options->Preferences menu but sometimes things which are already in layout won't change but when you place a new component then it would be as per your new settings.
@@BhargavaAnurag Thanks a lot
Sir, I have a question. How we can make an antenna circuit model or lumped element model using touchstone file? I have antenna model in CST and wanna make its circuit model. Waiting for your kind reply asap. Thank you.
Kindly check Reverse Engineering i.e. Video 21 in the same playlist....
@@BhargavaAnurag Thank you so much for your kind reply Sir. I would like to ask that how you have chosen that circuit diagram. I mean based on which criteria? My second question is; when I simulate my touchstone file after applying TermG to its one port it shows different S11 result as compared to the result when I just check touchstone file itself on S-Parameter view? Why these both results are different ?
I have read a book where it is mentioned to used Foster canonical forms for each individual resonance cure of S11 which means each resonance curve will get an RLC circuit for its equivalent modeling. Is it possible on ADS sir?
Thanks Anurag for these valuable videos.
I have a question on this topic. while creating a layout components i added EM parameters but when i try to use those parameters in setting the dimensions of standard microstrip components (Pcells) it accepts that for the first components only then it starts to give me error for using the parameter with any other component!!
is that normal? what is the mistake that you guess i had done?
Regards
Hi Alaa,
Its difficult to pinpoint what exactly might be going wrong here. I would recommend you to contact your local/regional Keysight tech support team to get help.
kindly also upload ORCAD tutorials humble request
Hi Zeeshan,
I do not handle or use Orcad so can't help.
How to check the output voltage Vs frequency graph, output voltage Vs input power, and efficiency Vs load resistance? In ADS for RF energy harvesting circuit
Hi Pradeep,
It should be pretty straightforward. Kindly reach out to you local Keysight tech support team for help.
Can you show the equations of IL_PassBand and PBand1?
Hi,
I will create a video on that pretty soon. Stay tuned....👍
Answer to your query is posted in the latest Tutorial-53 video....hope you will like it....👍
when i try tuning my em cosimulation circuit, I get the following error
A tune value has caused the simulation to fail
Error detected by hpeesofSim during HB analysis 'HB1'.
COMPONENT 'X8.em_data':
MODEL FAILURE: The EM Model's database for X8.em_data is not complete for real-time Tuning.
Simulate the cell first to complete the model database.
Use the interpolation delta as the parameter sweep step.
Error detected by hpeesofsim during HB analysis .
Fatal error occurred while evaluating model 'MomCmpt' ,
instance
'X8.em data' .
My apologies for the delay in response. If seems you have a parametric EM data and trying to do tuning? If so, you need to double click on emmodel view under the cell and switch on Interpolation delta value. If you are unsure what to enter in interpolation column then simply enter the same step size as you used in EM analysis.
Hope that will resolve your issue but if it doesn't then contact your local Keysight team for help.
How to install ADS in Windows 11?
Latest ADS version supports Win11 as official OS. Older versions doesn't support Win11 as officially supported OS.