Patrick André

High-Intensity Radiated Fields (HIRF) are powerful man-made electromagnetic emissions that can disrupt aircraft electronics. Researchers from military and aviation agencies have extensively studied these fields to understand their potential risks and develop protective certification standards.

Understanding current flow patterns is crucial in EMC engineering, particularly the distinction between Common Mode and Differential Mode currents. Controlling current paths and providing local return paths helps reduce electromagnetic interference and improve immunity.

Uncover the crucial role of LISNs - the unsung heroes ensuring reliable electromagnetic testing in aerospace. This insider look reveals their ingenious design and why standardization matters for replicable results.

Committee SC-202, comprised of over 100 members from various industries, was formed to address safety concerns related to the use of transmitting portable electronic devices (T-PEDs) like those with cellular and wireless capabilities on an aircraft.

Patrick Andre looks at the potential risks of personal electronic devices interfering with aircraft systems and the efforts by industry groups to address this issue.

Patrick Andre looks at the history and development of DO-160, “Environmental Conditions and Test Procedures for Airborne Equipment.”

Greetings. I am Patrick André, an independent EMC consultant in the Pacific Northwest. Having...

Magnetic materials used in inductors and filters have specific functions and purposes. However, knowing which to choose can be confusing.

The equipment should have passed the emissions scan. It should not be susceptible to this noise. The filter analysis said this was not a problem. The case should be an excellent shield. Why doesn’t this pass?

There are two statements I have heard about electromagnetic interference which are both related and true: EMC is the science and engineering of things that are typically not on the schematic [1], and EMI is often caused by issues of geometry [2]. The first statement speaks to the issues of parasitics, or cross coupling of energy due to magnetic induction or capacitance. The second says that the parasitics can be controlled or reduced if the proper routings and separations are maintained, and that once a degree of understanding about these coupling mechanisms is understood the control of them can be obtained.