Welcome to the RF Design Tutorials. In the 5th tutorial, we will learn how to design a Coax-Fed Patch Antenna with great ease in the Keysight ADS software.
Thank you so much. The coax design is a bit involved. I will have to watch it again and attempt to do it and hopefully get the same results as yours. Thank you for making these very educational videos.
Probably I didn't do a good job explaining that piece. Coax modeling is pretty simple, they are simply 3 co-centric circles with 2 boolean operations applied and if you use Derived layer concept in the stackup as I explained in one of the earlier video then you don't even need to do boolean manually in layout, it will happen automatically during EM simulation.
There are lots of things to learn for sure. It would be better if you could share this workspace. Never knew that static coax EM Model can be attached to a parameterised patch EM Model in such an easy way!
Thank you so much!! I have one doubt. How can I assign different colours to these 25 different plots(shown at 14:02)? I'm getting the results but I'm not able to know for which Xfeed and Yfeed locations I'm getting the best S11. From the table we can find that but I want to show in graphs that this Xfeed and Yfeed is giving the best matching
Hi Sir, I am trying to design the Coax feed and I have added the bond and resi layers too, but when I press 3 to get 3D view, the outer and inner conductors doesn't have any height. How to define their height? ( Due to this I am getting 2D view even in 3D). Thank you for posting such great content.. I am your great full student.. Thank you
To get the proper 3D view, you need to make sure you have all the layers mapped correctly in "tech.subst" stackup. If that doesn't resolve the issue then kindly contact your local Keysight tech support team
You can generate post processed data display from field visualization window which provides all relevant plots like Axial ratio etc. Contact Keysight support team for further help: support@keysight.com
@@BhargavaAnurag Thank you so much for the video.I was really didactic and I learnt more skills. Anyway i have the chalenge using the symbol in EM excitation, looks like no data is captured by the circuit simulator even when all frequecies have been enabled. Could you have come across such as challenge!. And again thank you so much for the feed back
@@BhargavaAnurag Thank you so much, I have to tried to review it over gain but seems there is a problem I just cannot understand why the EM simulation results of the structure are not captured by the Em Circuit excitation. Because I wanted to use the design with .s2p components. Always no frequency data is captured. My EM excitation is successful when i use MoM, but I wanted to define a finite ground plane. Any advise will be welcome.
Hello sir , i have followed this video and I'm getting a error in Em simulation showing as "no ground plane found in substrate and p1 needs a gnd reference" can you help me out with this?
You can contact Keysight tech support team for help. You either to have a ground plane defined in the stack up or should have placed pins on a specific layer that are used as negative pins in the port set up.
@@kandulasaidivyareddy5079 I would again recommend you to contact local Keysight team for help as its difficult to provide this kind of help on you tube
sir I am trying to move the feed point straight line will present. actual feed location as (5,5), I try to move (10,0) feed is not moving that location(10,0). a straight line will present.
@@BhargavaAnurag sir I repeat same procedure what you r teach in video.but same problem occurs. Actually I insert a pin on path,(5,5) location.that time I want to move pin (5,0)location. The pin p1 moved to that location.but problem is previous location to newly added location line present.
@@kiransiva9329 Do you mean you are seeing a Wire between old and new locations? If so, you can ignore the same as that doesn't affect your EM analysis but if you don't want to see it at all then go to Tools->Set Connectivity Option and under WYSIWYG, disable Create Physical Wires
Simply select the coax outer layer ring and go to Edit->Copy/Paste->Copy to layer and select bond as the layer and click OK. The shape will be copied to bond layer. Hope this helps.
![เขามัทรี - เอ็กซ์ ศุภกฤต - จอนนี่มิวสิค [ Official MV ]](http://i.ytimg.com/vi/AS9ufKuQIVs/mqdefault.jpg)
As usual phenomenal tutorial! Thank you for creating this content.
Glad you liked it!
Thank you so much. The coax design is a bit involved. I will have to watch it again and attempt to do it and hopefully get the same results as yours. Thank you for making these very educational videos.
Probably I didn't do a good job explaining that piece. Coax modeling is pretty simple, they are simply 3 co-centric circles with 2 boolean operations applied and if you use Derived layer concept in the stackup as I explained in one of the earlier video then you don't even need to do boolean manually in layout, it will happen automatically during EM simulation.
There are lots of things to learn for sure. It would be better if you could share this workspace.
Never knew that static coax EM Model can be attached to a parameterised patch EM Model in such an easy way!
Once again great video. Many thanks
Thank you too!
Very informative video Sir, thanks for sharing
Thanks and welcome
Outstanding job 👍.
Thank you! Cheers!
Great video sir. Kindly could you do a video on aperture coupling feeding method for patch antenna
Thanks George, surely will try to do it soon...👍
Thank you so much!!
I have one doubt. How can I assign different colours to these 25 different plots(shown at 14:02)? I'm getting the results but I'm not able to know for which Xfeed and Yfeed locations I'm getting the best S11.
From the table we can find that but I want to show in graphs that this Xfeed and Yfeed is giving the best matching
Yes you can! Double click on the trace and check box Line Color option..
Hi Sir,
I am trying to design the Coax feed and I have added the bond and resi layers too, but when I press 3 to get 3D view, the outer and inner conductors doesn't have any height. How to define their height? ( Due to this I am getting 2D view even in 3D).
Thank you for posting such great content..
I am your great full student..
Thank you
To get the proper 3D view, you need to make sure you have all the layers mapped correctly in "tech.subst" stackup. If that doesn't resolve the issue then kindly contact your local Keysight tech support team
@@BhargavaAnurag tq very much sir. That is helpful...
S, I am also finding the same problem. Can u help me how to resolve it
hi sir,
how to check circular polarization.
You can generate post processed data display from field visualization window which provides all relevant plots like Axial ratio etc. Contact Keysight support team for further help: support@keysight.com
Can i use this model with a finite ground and coax feed for EM circuit excitation??
Yes, absolutely....
@@BhargavaAnurag Thank you so much for the video.I was really didactic and I learnt more skills. Anyway i have the chalenge using the symbol in EM excitation, looks like no data is captured by the circuit simulator even when all frequecies have been enabled. Could you have come across such as challenge!. And again thank you so much for the feed back
@@ssejjuukopaulo6635 Kindly see a dedicated video on EM-Circuit Excitation and that should help to resolve your issue.
@@BhargavaAnurag Thank you so much, I have to tried to review it over gain but seems there is a problem I just cannot understand why the EM simulation results of the structure are not captured by the Em Circuit excitation. Because I wanted to use the design with .s2p components. Always no frequency data is captured. My EM excitation is successful when i use MoM, but I wanted to define a finite ground plane. Any advise will be welcome.
I actually got the solution. Thank you
sir, how to calculate the diameters of the coaxial cable for frequency 1.575 GHz?
Use any online calculator tool. Simply google coax calculator and you will find plenty of options
@@BhargavaAnurag thankyou sir
Hello sir , i have followed this video and I'm getting a error in Em simulation showing as "no ground plane found in substrate and p1 needs a gnd reference" can you help me out with this?
You can contact Keysight tech support team for help. You either to have a ground plane defined in the stack up or should have placed pins on a specific layer that are used as negative pins in the port set up.
Sir,We have been trying with the pins but it is showing sameerror ..and how should we define ground layer in a stack ?
@@kandulasaidivyareddy5079 I would again recommend you to contact local Keysight team for help as its difficult to provide this kind of help on you tube
sir I am trying to move the feed point straight line will present. actual feed location as (5,5), I try to move (10,0) feed is not moving that location(10,0). a straight line will present.
If you select the Pin/Port during parameterization then it will work as intended. Kindly recheck the steps you did.
@@BhargavaAnurag thank you so much sir ..
@@BhargavaAnurag sir I repeat same procedure what you r teach in video.but same problem occurs.
Actually I insert a pin on path,(5,5) location.that time I want to move pin (5,0)location. The pin p1 moved to that location.but problem is previous location to newly added location line present.
@@kiransiva9329 Do you mean you are seeing a Wire between old and new locations? If so, you can ignore the same as that doesn't affect your EM analysis but if you don't want to see it at all then go to Tools->Set Connectivity Option and under WYSIWYG, disable Create Physical Wires
@@BhargavaAnurag thank you lot sir..🙏🙏
sir i need to know how to map the coax bond as cap to the outer, please tell me boolean operation for mapping the bond to the outer probe
Simply select the coax outer layer ring and go to Edit->Copy/Paste->Copy to layer and select bond as the layer and click OK. The shape will be copied to bond layer.
Hope this helps.
@@BhargavaAnurag thank you sir for helping me