Thanks for sharing this. It is really helpful. I'm now simulating the Phased 2 patch array using a reflective hybrid coupler as the phase shifter. I'm also using the method you taught in this video. But When I switch DC bias Voltage, I cant see the difference in the far-field display by changing the voltage. How does man place active devices in Layout like this example and is it possible to place lumped elements in the layout? I'm looking forward to your reply.
I guess you will need to contact tech support to troubleshoot your issue. As long as you are using Circuit Excitation feature and loading Extracted Simulation results inside Far Field viewer window as shown in the video then you should see the change in current as well as far field plots.
Hello Anurag Bhargava, it is a great pleasure to greet you, I have seen many of your videos and they all have a lot of information and it is worth thanking each one of them. So thanks a million. One question: how can I download the simulation examples, or do I have to pay for them? I'm interested in knowing that. And again thank you very much.
Hi, Thanks for your feedback. I normally upload ADS workspaces wherever necessary to Keysight Knowledge Center with the link provided in the description box. If you are a supported customer with valid ADS license, you should be able to create a Knowledge Center account and download the workspaces.
I was waiting for this tutorial. Thank you for posting it. 1. Would you tell me why the pins (specially input pin) are placed 0.4-0.5 mm inside from the edge where as we normally place them on the edge? Is there any specific reason? 2. What is the purpose of using 'diel' layer in layout? 3. do I have to use pin in Cond-2 layer for each pin used in Cond layer?
Hello Asad, The example that I used for tutorial is an old example when we didn't have automatic option of selecting GND ref pins etc hence pins were placed on cond2 layers. Also, when in older version you needed to place pins slightly inside instead of placing it on the edge to avoid the large edge of the finite ground plane and Port calibration use to suffer quite a bit if you place it on edge as every pin was a point pin. In newer ADS versions it is fine to place pins on the edge and while placing pins, select type as Edge Pins instead of point pin and define the length of the edge as required, this puts a constraint on the edge size of the Pins irrespective of the conductor edge size. diel layer has no apparent role here but it is just kind of indicative of dielectric size but not utilized in simulations, however now you can use it as bounding area layer if you want to run FEM simulations etc
Thanks for this tutorial. 1.) Any chance of making detailed tutorial with tips and application on Transient and Envelop simulation like Harmonic Balance? 2.) For Oscillator case, running EMCkt using HB is not permitted in current ADS version. As there is no RF sources being present, HB is failing to show the fundamental & harmonic response of the overall Osc. circuit.
For (1), yes I will create tutorial in future. For (2), it is not the limitation of em-ckt cosim feature. Kindly contact Keysight tech support in your region to help you troubleshooting the issue.
Can you please suggest me the design procedure using Symbolically defined device (SDD) (eg. designing the Schottky diode) and way of writing and relating current and voltage equations.
Hi, I would recommend you to contact the Keysight Tech Support team to get more information on SDD modeling. They would be able to give you all the required documentation/example for the same.
thank you for your videos, I am learning a lot from you, could you please provide your email so that if I have a question I can ask you, and I have a question about this video, what is the difference between this simulation EM-circuit Excitation and the previous videos of EM model co-simulation.
Hi Luck, If you have any queries then please post it here and I will try my best to respond. EM model cosimulation is the technique to bring EM results in the schematic environment to check normal circuit behaviour alongwith the layout parasitics to replace ideal wire connections between schematic components to capture mismatch, parasitic coupling caused by layout design etc. This EM-Circuit excitation feature is used when you want to load your layout with circuit components distortions and would like to check current distribution or radiation pattern in presence of circuit components like diode, transistors, R,L,C etc. As you could see during the video, we used this approach to see radiation pattern of a "fully loaded" layout of a dual dipole antenna geometry including the effects of R, C and Diodes. Hope this helps to clarify.
@@BhargavaAnurag ok but when you designed an antenna using ADS EM model, we could also see the radiation patterns, and then you made a symbol and used it in schematic, so can't we design that layout as when you designed the antenna in previous videos and the used symbol and add like a resistor, transistor, etc. and then see the effect? I mean does EM-circuit Excitation necessary?
@@ltteogoali7251 I would recommend you to watch the video once again and listen to the explanation. Here are the few more points: 1. If it was same then we wouldn't have that menu in ADS and I wouldn't have created a separate video, isn't? 😉 2. When you create an EM model, remember that is without any circuit component and you place ports instead of any discrete components, isn't? 3. Idea about EM-circuit excitation is to excite the Layout to see currents & fields in the presence of circuit components 4. Watch the video at 14:15 to see how currents and fields will look like with circuits components and see how you fail to see currents in the structure because of that 5. Then watch the video from 16:45 to see what happens when you include circuit components by switching to the extracted simulations (which is nothing but EM-Circuit excitation mode) and you will understand the difference.
Thank you for the tutorial.
Glad it was helpful!
This is a pretty unique tutorial. Thanks for making it!
You're very welcome!
Very good information. Much appreciated
Glad it was helpful!
Thanks for sharing this. It is really helpful. I'm now simulating the Phased 2 patch array using a reflective hybrid coupler as the phase shifter. I'm also using the method you taught in this video. But When I switch DC bias Voltage, I cant see the difference in the far-field display by changing the voltage. How does man place active devices in Layout like this example and is it possible to place lumped elements in the layout? I'm looking forward to your reply.
I guess you will need to contact tech support to troubleshoot your issue. As long as you are using Circuit Excitation feature and loading Extracted Simulation results inside Far Field viewer window as shown in the video then you should see the change in current as well as far field plots.
If possible, Could you please make a short video about the phased array antenna design tutorial in ADS?
What kind of Phased Array antenna you need? Is it will corporate feed or individual feeds?
Hello Anurag Bhargava, it is a great pleasure to greet you, I have seen many of your videos and they all have a lot of information and it is worth thanking each one of them. So thanks a million. One question: how can I download the simulation examples, or do I have to pay for them? I'm interested in knowing that. And again thank you very much.
Hi,
Thanks for your feedback. I normally upload ADS workspaces wherever necessary to Keysight Knowledge Center with the link provided in the description box. If you are a supported customer with valid ADS license, you should be able to create a Knowledge Center account and download the workspaces.
I was waiting for this tutorial. Thank you for posting it.
1. Would you tell me why the pins (specially input pin) are placed 0.4-0.5 mm inside from the edge where as we normally place them on the edge? Is there any specific reason?
2. What is the purpose of using 'diel' layer in layout?
3. do I have to use pin in Cond-2 layer for each pin used in Cond layer?
Hello Asad,
The example that I used for tutorial is an old example when we didn't have automatic option of selecting GND ref pins etc hence pins were placed on cond2 layers. Also, when in older version you needed to place pins slightly inside instead of placing it on the edge to avoid the large edge of the finite ground plane and Port calibration use to suffer quite a bit if you place it on edge as every pin was a point pin. In newer ADS versions it is fine to place pins on the edge and while placing pins, select type as Edge Pins instead of point pin and define the length of the edge as required, this puts a constraint on the edge size of the Pins irrespective of the conductor edge size.
diel layer has no apparent role here but it is just kind of indicative of dielectric size but not utilized in simulations, however now you can use it as bounding area layer if you want to run FEM simulations etc
Simply amazing.
Thank you! Cheers!
That would be good to see RFPro version of EM cosimulation and circuit excitation results in RFPro.
Hi Sergey, That's coming very soon. I will start talking about RFPro as soon as we are done with LNA Design Tutorial.
Stay tuned....!!
Thanks for this tutorial.
1.) Any chance of making detailed tutorial with tips and application on Transient and Envelop simulation like Harmonic Balance?
2.) For Oscillator case, running EMCkt using HB is not permitted in current ADS version. As there is no RF sources being present, HB is failing to show the fundamental & harmonic response of the overall Osc. circuit.
For (1), yes I will create tutorial in future.
For (2), it is not the limitation of em-ckt cosim feature. Kindly contact Keysight tech support in your region to help you troubleshooting the issue.
Can you please suggest me the design procedure using Symbolically defined device (SDD) (eg. designing the Schottky diode) and way of writing and relating current and voltage equations.
Hi,
I would recommend you to contact the Keysight Tech Support team to get more information on SDD modeling. They would be able to give you all the required documentation/example for the same.
very much appreciated
You are very welcome
thank you for your videos, I am learning a lot from you, could you please provide your email so that if I have a question I can ask you, and I have a question about this video, what is the difference between this simulation EM-circuit Excitation and the previous videos of EM model co-simulation.
Hi Luck,
If you have any queries then please post it here and I will try my best to respond. EM model cosimulation is the technique to bring EM results in the schematic environment to check normal circuit behaviour alongwith the layout parasitics to replace ideal wire connections between schematic components to capture mismatch, parasitic coupling caused by layout design etc.
This EM-Circuit excitation feature is used when you want to load your layout with circuit components distortions and would like to check current distribution or radiation pattern in presence of circuit components like diode, transistors, R,L,C etc.
As you could see during the video, we used this approach to see radiation pattern of a "fully loaded" layout of a dual dipole antenna geometry including the effects of R, C and Diodes.
Hope this helps to clarify.
@@BhargavaAnurag ok but when you designed an antenna using ADS EM model, we could also see the radiation patterns, and then you made a symbol and used it in schematic, so can't we design that layout as when you designed the antenna in previous videos and the used symbol and add like a resistor, transistor, etc. and then see the effect?
I mean does EM-circuit Excitation necessary?
@@ltteogoali7251 I would recommend you to watch the video once again and listen to the explanation. Here are the few more points:
1. If it was same then we wouldn't have that menu in ADS and I wouldn't have created a separate video, isn't? 😉
2. When you create an EM model, remember that is without any circuit component and you place ports instead of any discrete components, isn't?
3. Idea about EM-circuit excitation is to excite the Layout to see currents & fields in the presence of circuit components
4. Watch the video at 14:15 to see how currents and fields will look like with circuits components and see how you fail to see currents in the structure because of that
5. Then watch the video from 16:45 to see what happens when you include circuit components by switching to the extracted simulations (which is nothing but EM-Circuit excitation mode) and you will understand the difference.