I am using ADS from more than 2 years but still i got to know new things in this series of videos. I feel using these many techniques will ofcourse improve efficiency of simulations, thank you sir for sharing the information.
Hello, thank you for your videos! I watched half of ADS in 5 minutes playlist and few videos from this playlist to design an IFA on PCB for my coursework. You have a gift of explaining things in a interesting and easy to understand way!
It would be nice to check if you could share your coursework after it is complete, and I can create a new tutorial video on how to perform IFA design using your coursework. Let me know if this would be possible?
@@BhargavaAnurag it is complete. But there is little interesting to salvage from it. I was very short on time so it's not parametrised (couldn't find a way to do it so that segments stay connected, later found out how, but haven't tried it) and just used brute force and modified it until I got results I wanted. Also, workspace is a mess since I iterated the design and then tried to import it to Xpedition Enterprise in various ways. The layout is based on TI application note AN058, which I modified to work on 1000 MHz with approximate of my board geometry and ground plane size. Nonetheless, I can send you the archived workspace, if you still interested.
Hi Anurag, great videos did you use the same substrate as in part1, and I was wondering what the parameters of the MSUB you used were, I was using the values from the substrate materials I was using, but my S11 is not coming up like in the video. Cheers
You can recheck the parameters. Whether you receive exactly same response shown in the video or not but it should be as per expectation unless either the stackup parameters or the antenna dimensions are wrong
at 12:20 when you drag and drop the schematic, there is no emModel under the name. But there is one on the parametric antenna you used, will this cause issue ? Thanks
Hi, I have no idea how to show the parameters of symbol like 12:13 in the video. When I creat a symbol from layout and use it in schematic and the symbol do not show the parameters. Could you tell me how to set it?
Hi Anurag, thanks for the outstanding video. Can you please tell me is it necessary to add "MSTEP" component in between MLIN and MACLIN3 and also MACLIN3 and MLOC ?
No, its not necessary as you are not doing any schematic level simulations where these discontinuities will affect the results. Its only to create layout so it is fine if you don't use them.
thanks for your explanation , could you please guide me how convert (RF sensor constructed from SIW +CSRR that simulated by CST ) TO equivalent circuit
There is no direct way but if you know the equivalent circuit topology then you can check out A vs. B modeling under Learn ADS in 5mins playlist i.e. Tutorial-21
MR,Anurag Bhargava , should I upgrage my ADS program to make my symbol work(that is generated by schematic ) , or what is your advise for that, your reply are highly appreciated
You've shown us that we can look at the antenna parameter in the far field option but that's only for 1 set of parameters. It is possible to compare for exemple the gain at 2.4 GHz for different values of L automatically, instead of opening the far field view 1 by 1?
Hi Shesha, You can refer to this: muehlhaus.com/support/ads-application-notes/functions-in-ads Don't worry about the function mentioned here and you can simply use A vs B modeling as shown in one of my videos and simply use S-Parameter of your Antenna as the reference and then optimize the RLC values. Hope this helps...
This simply means you have wrongly attached some parameters that is not properly scaling the geometry. Relook and use 1 parameter at a time to find which parameter is wrong.
when i push into symbol (that dose not work) it goes into schematic from which the layout is created ,but when i push into working symbol i go to EM model ,, is the problem that (not working symbol is linked to schematic), i have work on this problem for 1 full day , if do not mind and it is possible sending me your workspace for this lesson so i can compare it with my own.
You need to select "Choose View for Simulation" and depending on what you select will be shown when you push-in to the instance. Kindly watch Polymorphism video under Learn ADS in 5mins playlist.
@@BhargavaAnurag At ~8min you show how to build layout patch in schem to include parameterization. Was the schem version also optimized to include S-parameters, or was it only to serve as a schem symbol?
Hi I have a question not about the video, i think it's so clear for me. But what i'm looking for is how to make an adaptive circuit (Broadband Impedance matching lead a complex impedance to 50 Ohm in wide band at 24 GHz ), if you have information or some ADS documents please share with me, it would be helpful Thanks a lot for all your interesting videos Mr. Anugrag Bhargava
Hi Driss, I am not sure if you watched my other video on Impedance Matching: th-cam.com/video/ZUpuvQqK7ho/w-d-xo.html Its bit old but will give you enough pointers to start with. Depending upon your design technology you need to be sensitive to the substrate you select for 24GHz design if you are doing PCB/RF Board kind of implementation. I would recommend to use 10mil substrate with very good Loss Tangent and circuit to be designed using CPW based approach as far as possible. Let me know if Impedance Matching video I referred can be of your help.
Hi @@BhargavaAnurag, Yeah, I saw your old video, i find it so helpful to begin my matching impedance in some other projects that suggest a narrow band matching. In my last project, i already started with Chebychev Method Transformer Impedance but my problem is that method can adapt two real impedances, not a complex impedance to a real one (50 Ohm in our case). Do you have any ideas or ADS tutorials that you can share it with me for broadband matching complex impedances, that's what i'm looking for ? Thank you so much
@@drissaouladhadj4102 I would recommend you to look at Tools->Impedance Matching utility in ADS and here you could choose the type of matching network and define the source and/or load as either S-Parameter files or enter it manually for all the key frequency point. Based on what lumped circuit you come up with, you can use Lumped to a distributed converter to convert L & C to distributed equivalent components. You can get more details on this utility under ADS documentation... Another alternate would be to use Keysight Genesys software which has great impedance matching synthesis to design narrow or broadband matching networks and the best part is that you could do both input and output matching networks at the same time... Hope this helps...if it doesn't then I will try to create a tutorial in near future once I am done with the current list of stuff I have...👍 Let me know how it goes for you
@@drissaouladhadj4102 One more alternative, if you could send me complex impedance details with frequency and tell me what would you like to achieve then I can play with it to try to come up with a methodology for you..👍
Question is not clear and answer will depend on the exact structure you are designing. More reflection losses means you need to pay attention to feed location and the feed network.
I am not sure what mistake you are making, if your parameter values & assignment is correct alongwith stackup properties then you should get the right S11 as shown in the video. Kindly contact your local tech support for help
Seriously ,I didn't know about these features of ADS. Thank you Sir, for opening up these areas for me. Really appreciate your hardwork.
I am using ADS from more than 2 years but still i got to know new things in this series of videos. I feel using these many techniques will ofcourse improve efficiency of simulations, thank you sir for sharing the information.
Glad it was helpful!
Hello, thank you for your videos! I watched half of ADS in 5 minutes playlist and few videos from this playlist to design an IFA on PCB for my coursework. You have a gift of explaining things in a interesting and easy to understand way!
Glad you like them!
It would be nice to check if you could share your coursework after it is complete, and I can create a new tutorial video on how to perform IFA design using your coursework. Let me know if this would be possible?
@@BhargavaAnurag it is complete. But there is little interesting to salvage from it. I was very short on time so it's not parametrised (couldn't find a way to do it so that segments stay connected, later found out how, but haven't tried it) and just used brute force and modified it until I got results I wanted. Also, workspace is a mess since I iterated the design and then tried to import it to Xpedition Enterprise in various ways. The layout is based on TI application note AN058, which I modified to work on 1000 MHz with approximate of my board geometry and ground plane size. Nonetheless, I can send you the archived workspace, if you still interested.
Hi Anurag, great videos did you use the same substrate as in part1, and I was wondering what the parameters of the MSUB you used were, I was using the values from the substrate materials I was using, but my S11 is not coming up like in the video.
Cheers
You can recheck the parameters. Whether you receive exactly same response shown in the video or not but it should be as per expectation unless either the stackup parameters or the antenna dimensions are wrong
awsome thanks
at 12:20 when you drag and drop the schematic, there is no emModel under the name. But there is one on the parametric antenna you used, will this cause issue ? Thanks
When drop the symbol there will no subcircuit assigned, user can use "Choose View for Simulation" to select emmodel for proper simulation
Hi, I have no idea how to show the parameters of symbol like 12:13 in the video. When I creat a symbol from layout and use it in schematic and the symbol do not show the parameters. Could you tell me how to set it?
Watch here: th-cam.com/video/kaUYW1Uuu2A/w-d-xo.html
@@BhargavaAnurag thx
Sir, Can we add any slots in the patch or ground in the schematic design?
Hi Suneel,
No, In all schematic components Ground is assumed to be ideal so you can't really draw anything on Ground layer.
Hi Anurag, thanks for the outstanding video. Can you please tell me is it necessary to add "MSTEP" component in between MLIN and MACLIN3 and also MACLIN3 and MLOC ?
No, its not necessary as you are not doing any schematic level simulations where these discontinuities will affect the results. Its only to create layout so it is fine if you don't use them.
Thank you!
thanks for your explanation , could you please guide me how convert (RF sensor constructed from SIW +CSRR that simulated by CST ) TO equivalent circuit
There is no direct way but if you know the equivalent circuit topology then you can check out A vs. B modeling under Learn ADS in 5mins playlist i.e. Tutorial-21
Please make a video on rectfier design & simulation
MR,Anurag Bhargava , should I upgrage my ADS program to make my symbol work(that is generated by schematic ) , or what is your advise for that, your reply are highly appreciated
I am not sure which version of ADS you are using but this feature was always there in ADS for a long time.
You've shown us that we can look at the antenna parameter in the far field option but that's only for 1 set of parameters. It is possible to compare for exemple the gain at 2.4 GHz for different values of L automatically, instead of opening the far field view 1 by 1?
Not directly unless you perform some kind of scripting.
sir can you please make a video to convert any patch antenna to its equivalent RLC circuit ...please
Hi Shesha,
You can refer to this: muehlhaus.com/support/ads-application-notes/functions-in-ads
Don't worry about the function mentioned here and you can simply use A vs B modeling as shown in one of my videos and simply use S-Parameter of your Antenna as the reference and then optimize the RLC values.
Hope this helps...
when i do symbol without EM parameters it work well
This simply means you have wrongly attached some parameters that is not properly scaling the geometry. Relook and use 1 parameter at a time to find which parameter is wrong.
when i push into symbol (that dose not work) it goes into schematic from which the layout is created ,but when i push into working symbol i go to EM model ,, is the problem that (not working symbol is linked to schematic), i have work on this problem for 1 full day , if do not mind and it is possible sending me your workspace for this lesson so i can compare it with my own.
You need to select "Choose View for Simulation" and depending on what you select will be shown when you push-in to the instance. Kindly watch Polymorphism video under Learn ADS in 5mins playlist.
Did you actually sim that sch version? And it yielded same/similar results as layout?
Your question is not clear to me hence can't respond.
@@BhargavaAnurag At ~8min you show how to build layout patch in schem to include parameterization. Was the schem version also optimized to include S-parameters, or was it only to serve as a schem symbol?
@@eechentra1761 The schematic shown is not optimized for any circuit simulation, it is only used to create the layout...😊
Hi
I have a question not about the video, i think it's so clear for me.
But what i'm looking for is how to make an adaptive circuit (Broadband Impedance matching lead a complex impedance to 50 Ohm in wide band at 24 GHz ), if you have information or some ADS documents please share with me, it would be helpful
Thanks a lot for all your interesting videos Mr. Anugrag Bhargava
Hi Driss, I am not sure if you watched my other video on Impedance Matching: th-cam.com/video/ZUpuvQqK7ho/w-d-xo.html
Its bit old but will give you enough pointers to start with. Depending upon your design technology you need to be sensitive to the substrate you select for 24GHz design if you are doing PCB/RF Board kind of implementation. I would recommend to use 10mil substrate with very good Loss Tangent and circuit to be designed using CPW based approach as far as possible.
Let me know if Impedance Matching video I referred can be of your help.
Hi @@BhargavaAnurag, Yeah, I saw your old video, i find it so helpful to begin my matching impedance in some other projects that suggest a narrow band matching. In my last project, i already started with Chebychev Method Transformer Impedance but my problem is that method can adapt two real impedances, not a complex impedance to a real one (50 Ohm in our case). Do you have any ideas or ADS tutorials that you can share it with me for broadband matching complex impedances, that's what i'm looking for ?
Thank you so much
@@drissaouladhadj4102 I would recommend you to look at Tools->Impedance Matching utility in ADS and here you could choose the type of matching network and define the source and/or load as either S-Parameter files or enter it manually for all the key frequency point. Based on what lumped circuit you come up with, you can use Lumped to a distributed converter to convert L & C to distributed equivalent components. You can get more details on this utility under ADS documentation...
Another alternate would be to use Keysight Genesys software which has great impedance matching synthesis to design narrow or broadband matching networks and the best part is that you could do both input and output matching networks at the same time...
Hope this helps...if it doesn't then I will try to create a tutorial in near future once I am done with the current list of stuff I have...👍
Let me know how it goes for you
@@drissaouladhadj4102 One more alternative, if you could send me complex impedance details with frequency and tell me what would you like to achieve then I can play with it to try to come up with a methodology for you..👍
Hello sir
I m VIGNESH
Fresher RF testing engineer
Learning for this video
Help and support
Hello sir, how can I improve the reflection losses I have for the frequency of 0.868?
Question is not clear and answer will depend on the exact structure you are designing. More reflection losses means you need to pay attention to feed location and the feed network.
@@BhargavaAnurag I can not find what I am doing wrong, can I email you the results I get from the simulation to understand what I am doing wrong?
@@ΠετροςΜανζιερι Kindly take help from your local Keysight tech support team
the symbol model (time of video 12:15)dose not work for me and I do not know the reason for that can you help me ,i dose not get s(11) correctly
I am not sure what mistake you are making, if your parameter values & assignment is correct alongwith stackup properties then you should get the right S11 as shown in the video. Kindly contact your local tech support for help
@@BhargavaAnurag thank man
@@BhargavaAnurag but the layout work properly
Warning detected by hpeesofsim in topology check during circuit set up.
Number of nodes with only one device attached (topology corrected): 4
This warning can be ignored and it doesn't affect your simulation results.