EMI Process
EMI (Electro Magnetic Interference) is the term to describe the interaction of electrical and electronic equipment with its electromagnetic (EM) environment and with other equipment. EMI is concerned with emissions and immunity of electronic devices. All electrical devices generate emission and are susceptible to EM phenomena such as lighting-induced transients, electrostatic discharges, electrical fast transients, radio frequency fields generated by transmitters and hand-held communication devices. Moreover, an electronic device can be also susceptible to self-generated interferences. A good EMI design will minimize both susceptibility to, and generation of, EM disturbances. Different classes of products may have different legal and functional limits for EMI, however the principles of sound low-noise, low-emission and high-immunity design are always the same.
The importance of EMI compliant engineering grew rapidly with the introduction of government regulations in both Europe and USA , requiring the adoption of new legislative EMI standards.
For designers, our goal is to fulfill these demands by detecting EMI and also helping to minimize or avoid potential EMI hazards. Years of experience, real world application know-how and powerful simulation tools enable us to optimize the design of your complex products.
The Zuken EMI Process comprises:
- Optimization of existing designs
- Generation of EMI design rules for new technologies
- Post layout Analysis for EMI effects on dedicated substructures of PCBs
- Hot-Spot, Power-Ground and Decoupling Analysis
- Basic education regarding EMC and EMI effects
- Consultation during development and active design support.
Customers benefit from the application of our EMI expertise and our design knowledge which is derived from theory, simulation, measurement and experience in a wide range of applications. In close co-operation with your R+D engineers, we implement this knowledge into the customers' designs to help them achieve compliance to the given limits and specifications.
Special attention should be given to the issue of "PCB Power Bus Design and Decoupling Concepts", which includes aspects related to the supply and ground system of a printed circuit board. With higher complexity, integration and performance of the customers' designs, the demands on the power bus design get more critical. A proper power bus design is the basic requirement for good Signal Integrity and EMI behavior and therefore key for successful high-speed design.
This will help to fulfill the basic requirement for an EMI and SI designed product. It guarantees a minimized radiated emission on the one hand, on the other it ensures the functional stability. Investigating the resonance of the planes and the effectiveness of decoupling capacitors not only helps to ensure minimized radiation, but also may help to optimize the costs of your design.
