Issue link: https://iconnect007.uberflip.com/i/1533085
74 DESIGN007 MAGAZINE I MARCH 2025 nal, handle some of the loss, and provide signal loss cases. We started from this idea, did some tests, and then we presented our findings. You had many photographs of the outcome of the structures, and you classed them into product names. Do you actually control the crystalline structure, or is it classified based on how it comes out? It is classified first. However, it is not easy to handle the actual cr ystal size. As I showed, the cr ystal size of the material is not chang- ing. We can only handle the grain size by the printed circuit process. So, this is the tar- get, because many PCB manufacturers will not change their process. ey will not get a special process for this one type of cr ystal structure or material. But they still want to completely manage the signal loss. We tr y to improve the ability to manage grain size using the normal PCB process. You also mentioned that you're continuing your studies. What else will you be studying? e study method is the same, but the maxi- mum speed of what we studied is to 50 giga- hertz. We have to study a higher bandwidth, from the 50 to the 100 gigahertz. So, the test methods are the same, but what is being tested will be at higher bandwidths or speeds. You must have been pleased with the atten- dance at your presentation. The attendees asked a lot of good questions. Yes, there were some good questions. We had some Korean people and some U.S. people on the phone discussing how to handle the crystal size. It was very interesting. ey were inter- ested in this presentation because they are already struggling with the limitations of han- dling the signal loss. ey wanted to learn how to better handle the signal without touching the crystal size. Our idea is different than how they have been handling it, not directly having to do with decreased crystal size. Paul, thank you for talking with me, and for your great research as well. ank you so much. DESIGN007 Jaeyeol (Paul) Park