Issue link: https://iconnect007.uberflip.com/i/1539283
SEPTEMBER 2025 I DESIGN007 MAGAZINE 29 higher frequencies, especially around 'this specific frequency,' the via is causing a lot of the signal to be lost (high insertion loss) and a lot of the signal to bounce back (high return loss) because it's hitting a resonance point." It's super important for high-speed stuff because if your actual data signal or its harmonics land on one of these resonance frequencies, your signal will be totally trashed, and your system won't work reliably. Conclusion The performance of a PCB is one of the three key perspectives in achieving success in PCB design. It must be addressed, along with solvability and manu- facturing being the other two key perspectives. Addressing the performance of a PCB includes signal integrity, which is why signal integrity is very important and is a fundamental consideration that must be addressed in high-speed digital design. Un- derstanding transmission line behavior, impedance discontinuities, and reflection mechanisms is essen- tial for implementing effective termination strategies and ensuring reliable system performance. As data rates continue to increase and edge rates are faster than ever, the topics discussed in this article become even more critical. Engineers/ designers must carefully consider transmission line characteristics, properly match impedances, implement appropriate termination techniques, and minimize crosstalk to maintain signal integrity in their designs. It's also important to understand the effect of power voltage fluctuation on driver and re- ceiver circuits and how this effect can cause timing jitter and, in severe cases, the complete malfunction of an IC. By mastering these concepts and utilizing advanced analysis tools, engineers/designers can create robust high-speed systems that deliver reliable performance even as technology continues to push the boundaries of speed and complexity. DESIGN007 Stephen V. Chavez is principal technical product marketing manager for Siemens EDA, and chair of PCEA. IBM and AMD announced plans to develop next-generation computing architectures based on the combination of quantum com- puters and high-performance computing, known as quantum-centric supercomputing. AMD and IBM are collaborating to develop scalable, open-source platforms that could redefine the future of computing, leveraging IBM's leadership in developing the world's most performant quantum computers and software, and AMD's leadership in high-perfor- mance computing and AI accelerators. "Quantum computing will simulate the natural world and represent information in an entirely new way," said Arvind Krishna, chairman and CEO, IBM. "By exploring how quantum com- puters from IBM and the advanced high-per- formance compute technologies of AMD can work together, we will build a powerful hybrid model that pushes past the limits of tradition- al computing." AMD and IBM are exploring how to inte- grate AMD CPUs, GPUs, and FPGAs with IBM quantum computers to efficiently accelerate a new class of emerging algorithms, which are outside the current reach of either paradigm working independently. The proposed effort could also help progress IBM's vision to de- liver fault-tolerant quantum computers by the end of this decade. AMD technologies offer promise for providing real-time error correc- tion capabilities, a key element of fault-toler- ant quantum computing. The teams are planning an initial demon- stration later this year to show how IBM quan- tum computers can work in tandem with AMD technologies to deploy hybrid quantum-clas- sical workflows. The companies also plan to explore how open-source ecosystems, such as Qiskit, could catalyze the development and adoption of new algorithms that leverage quantum-centric supercomputing. (Source: AMD) IBM, AMD Join Forces to Build the Future of Computing