Perfectly designed transmitter (Tx) and receiver (Rx) coils do not guarantee high wireless power transfer (WPT) efficiency. Even with correctly tuned circuits, performance often drops when the coils are assembled into the final product. The root cause is usually nearby metallic and magnetic parts—such as metal backplates, alignment magnets, battery casings, and chassis screws. These […]
A wireless charging coil can achieve good coupling in perfect alignment and still overheat during operation. A compact coil may fit the available space but have higher resistance or weaker coupling. A larger coil or multicoil layout may tolerate more receiver displacement but require space the product cannot provide. These constraints are connected. Coil dimensions, […]
A coil can couple well, but run too hot. It can fit nicely into the product, but lose efficiency. It can handle misalignment, but require more space than the mechanical team wants to give. That is the trade-off engineers keep running into: efficiency, package size, and heat. You can improve one side of the triangle […]
A wireless charging system gets hot. That part is clear. The harder question is: what should be changed first to reduce the heating? The coil? The ferrite shield? The nearby metal plate? The alignment between transmitter and receiver? The operating current? A temperature distribution alone does not answer that. It only shows where the heat […]
The part can heat correctly. The hardening pattern can look fine. The first test can pass. And the coil can still be moving toward early failure. That is the uncomfortable part of induction coil cooling. A coil is not only a copper shape that transfers energy into the workpiece. It is also a tool that […]
Validation is not about proving a simulation is perfect. It is about checking whether it is close enough to help you make good engineering decisions. This is where comparison often gets messy. Teams look at one final simulation image, place it next to one lab result, and decide the model works. But that only shows […]
A prototype can prove that a hardening process works. Production asks a harder question: can the same process run with good output, long coil life, and less time lost to troubleshooting? That is the real shift from prototype to production. The goal is no longer to get one good result. The goal is to run […]
About the author This guest article was written by Sebastian Hirnschall, a technical mathematics student in Vienna who also works part-time at Cerbsim. His interests sit right at the intersection of numerics, FEM, electronics, mechanical design, 3D printing, and software. On his blog, he documents technical projects in a clear and hands-on way. This project […]
A 10-board test showed that CENOS matched the measured resonance very closely across nine valid boards, giving INLAN a stronger basis for early design decisions before the next hardware step. In RF design, simulation is not there to make nice images. It is there to help engineers decide what to do next. That is what […]
Medicine has been around for thousands of years. There are new inventions and improvements to help people live healthier and longer lives. In this case study, we will look into the induction heating (also rf induction heating) of a catheter with CENOS simulation software. Catheters, specifically, have a long history. They’ve been used since ancient […]
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