Harmonic comb generators are handy tools for validating open area test sites or semi-anechoic chambers and I've written extensively on how to use these for various other applications (see References). Harmonic comb generators produce a range of narrow band harmonics that are typically very stable in amplitude and frequency. One of the major uses is to position one in place … [Read more...]
Military
Cadence Announces Full DRAM Verification Solution for Automotive, Data Center, and Mobile Applications
SAN JOSE, Calif.— Cadence Design Systems, Inc. (Nasdaq: CDNS) today announced a new DRAM verification solution, allowing customers to test and optimize system-on-chip (SoC) designs for data center, consumer, mobile and automotive applications. Using the full DRAM verification solution, which delivers up to 10X increased verification throughput, customers can quickly and … [Read more...]
FN2220 | EMC Filter for EV Fast Charging
The fast adoption of electric vehicles (EV) was followed by an increased demand for charging stations. To top up the car when traveling, new generations of high-power charging stations are being developed. As a result, as a leader in the field of electromagnetic compatibility, we provide you with the right solution: our EMC-filter FN2220 for fast EV charging. Are you … [Read more...]
FN9260 & FN9262 – IEC Inlet Filters With Wire Leads
Following a strong demand in the market - as an international leading company in the field of electromagnetic compatibility - we provide more connection options for the existing FN9260 and FN9262 filter series. Exceptional conducted attenuation performance. Option with Stranded Wire Leads The option with stranded wire leads not only comes with a shorter housing … [Read more...]
ESD Testing Needs to Change to Reflect Real-Life
Semiconductor die shrinking means that 0.7ns risetimes are now too slow Electrostatic discharges in the real world cover a very wide range: from relatively slow high-voltage events (say, > 1kV peak) to extremely fast low-voltage events (say, < 1kV peak). The figure shown is of the transient field radiated by a micro-gap discharge between two coins – more on this … [Read more...]
Ground / Power Bounce Cause Noise Emissions From All IC Pins
Ground and power bounce are often ignored as sources of CM noise emitted from all integrated circuit (IC) pins, even if they are static inputs or outputs, digital or analogue, and even sometimes emitted as radiated noise directly from the body of the IC (especially when its physical structure resonates). CMOS ICs use ‘totem-pole’ logic switching gates that momentarily short … [Read more...]
Risks Associated with EMC and EMI – Don’t get Confused!
There are many kinds of risk For example: the risk of being late for an appointment; the risk of buying a lottery ticket but not winning a prize; the risk of designing and manufacturing a new product that might not sell well enough, etc. The above are examples of non-safety-related risks, but safety-related risks also exist. EMC1 Risk Management (or, the Risk Management … [Read more...]
A Simple Method for Estimating Radiated Emissions – Part 2
I recently published this blog, detailing a simple proven method for estimating the radiated E field with specified test setup. As a result, I received the following feedback... 'This model is wrong for equipment tested over a ground plane as described. The complex correct transmission line model (less the ground plane) is given by Balanis, and a simpler but accurate … [Read more...]
A Simple Method for Estimating Radiated Emissions
A simple method for estimating radiated emissions I recently received the following question: How to calculate the radiated E field with following test conditions with an antenna placed 1 meter away from the test setup?: A commercial equipment under test with metal housing Equipment placed on the grounded metallic table/plane LISN installed (and also placed … [Read more...]
Comparison of PWM VFDs versus Resonant Link Converters – Part 2
In Part 2 of this blog, the harmonic current distortion of a typical Variable Frequency Drive (VFD) is discussed, as well the possible solutions to the problems that this causes. Active Front End or (AFE) units are also discussed and some of the issues that they themselves … [Read more...]
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