Flexible PCB Modelling 'Wrapping' in SpaceClaim

Sorry about that, attendees. What I've just noticed is that my audio has been off this whole time. I apologize. Anyway, I'll keep going from where I left off.

What I was saying is that those in engineering work as an ANSYS channel partner, we offer the ANSYS cloud - a service designed to give you burst capacity to solve large or lengthy or high RAM requirement models using elastic cloud units.

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So up next is our presenter, Stephen Anchong Liu. He's an application engineer at Ozen Engineering. He supports our electronic products for our customers. If you've ever spoken with him, he would have been helping you with HFSS and Maxwell and SI Wave and Simplorer.

Anchong is an electrical engineer with a degree from the University of California at Santa Barbara. And I will turn this over to him. Great. Thanks, Chris, for the introduction. If you're ready, I'll start my presentation today. Today's topic is about a flexible PCB in space. Okay.

So the flexible PCB is a very common problem. It's a very common case claim. What that – the initiative for making this webinar is that we're in the Silicon Valley. So there's – with the new technology of the flexible PCBs, there's an increasing need for modeling flexible PCBs.

We're actually seeing this technology – starting to see this technology nowadays in the consumer product. For example, some of the cell phone companies are making cell phones that are flexible. In the case of that, we need a PCB that needs to be flexible. And of course, we need to simulate that.

And what I've encountered more and more with engineers is that they're provided with a flat PCB and trying to model it as it bends. But to do such a CAD work is tedious and time-consuming if you do it purely manually from the CAD tool.

So now today, ANSYS has the capability in our own CAD tool SpaceClaim to help you sort of quote-unquote wrap the flat PCB into a banded PCB. So first of all, I'd like to show you a prerecorded video of how this is being done in our CAD tool SpaceClaim. So it's about a 12-minute video.

As you can see there under the top ribbon, the tool ribbon, there is a script. It's kind of like an add-on feature to the SpaceClaim. It is not built in with the tool, but you do need some additional steps to take care of it. So let's go ahead and start the process.

So the first thing we're going to do is we're going to install a script that ANSYS wrote for this. So first of all, the video shows you that it's importing a board design. Upon doing that, the ANSYS electronic desktop will be launched in the background.

We're not using it in this case, but it is a script written based on ANSYS electronic desktop. So as you can see, the HFSS's 3D layout is opened up and it's just generating the mesh and the solid model at the back scene and will soon transfer back to SpaceClaim. As you can see, it is doing that now.

Just a second. So now we have a board, we have a flat board imported into SpaceClaim. So the next step is that we're trying to bend this flexible PCB. In a traditional way, we'll have to do it using some, you know, some kind of a flat board. We can actually do it at night but only just in case.

Now you can see that the board can operate slowly but прекрасly. We're going to leave it live. Christiaan, on the left. You're on the right, definitely the lathe can do it faster, it seems to me. Esta el, este radio lo dice en slut 18. year.

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Before it does the wrapping process, we do need to set up something. First of all, we have this flat board. We're just looking at the video is just investigating the board. So the next step would be, well, on the left side, we have a flex to wrap, which is the PCB model.

Then there is a wrap direction in the tree that tells the software what's the direction to wrap it. So now we are trying to draw a reference plane at the bottom of the PCB. So all these steps, we're just trying to give a bend angle and the bend direction of the PCB.

So as for now, we're still, we're still setting up the prerequisites for running this script. So as you can see, we've drawn a kind of like a U-shape, U-shape curve, and it's only a line. Whoops. Apparently, I didn't get the width value. So we're going to give it 15mm. So it will make sense.

Now what we're going to do is just we're just going to align the reference plane with the board by selecting the entire reference plane we can move it we can move it by just using the move action. We're at this point we're aligning the coordinate system. This will be the target point.

You can use whatever you'd like to place the by click OK now we go back in here search off based on our main template hierarchies. We're going to pick too this tell us where all the files are. We we're just just a little bit more configuration - nothing just to notice questions also.

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First is import flex which is the script to support the second one is wrap flex which is the action which is the action once everything is all set it will start to wrap it. So now the script is running. It might take a couple of minutes. Okay, we're going to fast forward a little bit.

This wrapping takes a little bit of time, but as you can see, the board is starting to wrap itself around the reference plane that we created. So as you can see, this is not a super complex board, but still, it has a lot of details of the traces.

If we were to do this manually, we can probably do it, but it might take it might take a couple of hours. But now it's only a couple of minutes.

We try to do this kind of work with engineers by hand in HFSS, but as I said, we were able to do that with the board, but the details of the traces and the Vs were not correctly captured. Okay, now as you can see, the target is not captured.

So we're going to start to wrap it up and target becomes the target. The target is gone, and now it becomes the wrap bodies. So as you can see, the board is now wrapped around the reference plane that we created. There is a so the target is gone.

As you can see, if we select target, nothing is under that component. We can delete that. The flux to wrap is can be deleted as well. You can save it and reuse it for future simulations.

So once it's being done, we can see that now all of our traffic will be processed and then this will come on the worktop. Now we can test it in SpaceClaim, we can link it through... We can link it to HFSS through SpaceClaim by using the SpaceClaim dynamic links with the HFSS.

And now it is imported into HFSS. As you can see, all of the components' vias are correctly captured. And as you can see, the board has been... Because the material is flexible, so at the bent area, of course, the board and the dielectric is expanded, but that's just the nature of the flexible PCB.

So this is it for the video. Now I'd like to quickly go through... I'd like to quickly go through the requirements for this application. How to install this in SpaceClaim. So installing the SpaceClaim integration, we have... So upon request, I can share this with you if you're interested.

So there's some setups. Upon downloading the folder, we have a couple of scripts that you... Scripts in the libraries you do need to put in place. So you can see that it's in the library. So you can see that it's in the library. So you can see that it's in the library.

So you can see that the IB is in the library. And now you need some scripts later. That you can use this is called the Comiclicium server. So I'll add it later.

And of course, this institution will probably stitch the silver shield layers, create an ACIS file, import the display claim, and configure an initial wrapping template. So, as we saw, this will launch AEDT.

The Reflex script provided a wrapping template that wraps bodies the Flex2Wrap component onto the target sheet. The wrapping process, as we saw in the video, from the tools, we run the import flex command. When prompt, we would like to choose the pin-to-pin XML from the configuration file.

When prompt, choose the cadence bird file containing the shield information. Something to be noted is that the import flex automatically creates a candidate sheet. If you want to use the same method, you can use the same method for all the release purposes. So, we will continue to go for Baby.

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Some additional examples that I'd like to show is that the example we saw in the video was just a single bent where there was only one bent. In this one, I'll show you how it is also It also works for multiple bends.

As you can see, we have a target that has two bends and we have a target flexible PCB to wrap and the wrap direction is set to be here. So now everything is all set at this point. I'll run this. In a moment, so it will start to wrap. Oh, this was quick. So as you can see, the target is gone.

Flex to wrap is gone. So now we can turn off the wrap direction. And then the PCB becomes a multiple band board. Upon this, we can do further simulation and import that into HFSS. So, I'll just show you how it looks like. Okay. So this will be all that I have for today's material.

If you have any questions, feel free to post that in the question section, or feel free to email me at hsss.com. I'll see you in the next video. Bye-bye. Call us at info@ozandink.com or support@ozandink.com. There is no direct answer to thisoba. Okay.

Okay, it seems nobody has a question at this moment. As I said, feel free to contact us if you are interested in this nice little feature. You can reach us through phone or email us at support@ozening.com.

Once again, we're a consulting company that distributes ANSYS softwares as well as doing consulting works. We have a lot to offer. We're here in Sunnyvale. Feel free to reach us in any way. Without further ado, thank you for attending today's webinar. Thank you, everybody. Have a nice day.