Interference Technology

An Engineering Ethics Question for Today

I’ve been presenting a seminar on engineering ethics to students in the Electrical Engineering Department at Washington State University for a number of years. I’ve started off with a video of the Challenger explosion and the questions leading up to […]

Joining the New Defense Acquisition University (DAU) Spectrum & EM Compliance Community of Practice (CoP)

The Defense Spectrum Office has sponsored for many years, the Spectrum and EM Compliance Special Interest Area on the DAU’s Acquisition Community Connection (ACC) portal. This Community of Practice (CoP) serves as a platform to connect Spectrum and E3 Compliance […]

Selecting the Proper EMI Filter Circuit For Military and Defense Applications

Introduction Insertion loss, the term used to express a filter’s ability to reduce or attenuate unwanted signals, has traditionally been measured in a 50 ohm source and 50 ohm load impedance condition, as standardized in MIL-STD-220. In this matched 50 […]

Simulating EM Shielding for Aeronautical Applications

The airframe of an aircraft can provide some measure of shielding against high-intensity radiated fields (HIRF), but this is compromised by doors, windows, seams, access panels and components interfaced to the airframe such as antennas used for communication and navigation. […]

Choosing and Using Silicon Protection Devices

Introduction Correctly choosing an external (off chip) Transient Voltage Suppressor (TVS) is not as simple as it once was. Integrated Circuit (IC) feature size is shrinking (Figure 1) and more and more inputs are being exposed to the outside world. […]