White Paper: Electronics & Computers
Design Considerations for EMI Shielding in Medical Applications
SPONSORED BY: ![]()
Increased communication and the use of wireless technology in more applications are creating more noise and interference than before. This is why it’s imperative for engineers to prioritize EMI shielding from the outset of the design process. This whitepaper guides engineers through the technological advances that are changing the current approaches to EMI shielding.
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Overview
The white paper on EMI Shielding Design Considerations in Medical Applications addresses the critical issue of electromagnetic interference (EMI) and its implications for electronic devices, particularly in the medical sector. EMI, also known as radio frequency interference (RFI), can disrupt the functionality of electronic circuits, leading to malfunctions that range from minor annoyances to serious safety hazards.
The document emphasizes the importance of incorporating EMI shielding at all design levels, including enclosures, modules, and printed circuit boards (PCBs). A Faraday cage is highlighted as a key component for effective EMI shielding, preventing electromagnetic radiation from entering or exiting an area, thereby minimizing interference.
To ensure compliance with electromagnetic compatibility (EMC) standards, the paper outlines a three-step process for EMC testing: identifying applicable standards, performing pre-compliance testing, and selecting an accredited EMC test lab. Pre-compliance testing is recommended to assess a product's immunity to EMI and its emission levels before formal testing, ideally conducted in controlled environments like anechoic chambers.
The white paper also discusses the significance of signal integrity and its relationship with EMC. While signal integrity focuses on maintaining the quality of signals between transmitters and receivers, EMC ensures that devices operate satisfactorily within their electromagnetic environment without causing disturbances to other equipment. The document stresses the need for good design practices, including proper board layout, filtering, and grounding, to mitigate EMI.
Finally, the paper highlights the growing demand for effective EMI shielding solutions due to advancements in electronic devices and the increasing prevalence of the Internet of Things (IoT). It encourages engineers to consider EMI shielding early in the design process to avoid inefficiencies, costly redesigns, and delays in product launches. TE Connectivity offers a broad portfolio of EMI shielding materials tailored to meet various application challenges, positioning itself as a valuable partner in this field.