This is post 3 of AR’s blog series “Specifying RF/Microwave Power Amplifiers for EMC Testing.” The full series can be viewed here. SYSTEMS The ability to pull together the right amplifiers for the job, with training and ongoing support is one of many important elements to building a system. This approach allows test engineers and technicians the ability to do what they do … [Read more...]
Specifying RF/Microwave Power Amplifiers for EMC Testing – Amplifier Input & Output Requirements
This is post 2 of AR’s blog series “Specifying RF/Microwave Power Amplifiers for EMC Testing.” The full series can be viewed here. INTRODUCTION How much input power is required to achieve full rated output power is a common concern when choosing an amplifier. Amplifier manufacturers have specified an input of 1 milliwatt. (Note that this is not the case for every … [Read more...]
Introduction to Specifying RF/Microwave Power Amplifiers for EMC Testing
Can you imagine a world without electronic devices? AR asks and answers this question in its new blog series: “Specifying RF/Microwave Power Amplifiers for EMC Testing.” Explosive growth in technologies like portable electronics, Internet-of-Things devices, and autonomous vehicles has led to a world full of electromagnetic interference. Efficient EMC testing is more critical … [Read more...]
Review of MIL-STD-461 CS116 Damped Sinusoidal Transients, Cables and Power Leads
Introduction In this article, I am delving into the evolvement of CS116 testing, the background, the purpose and how the testing is approached today. The test title is, “Conducted Susceptibility, Damped Sinusoidal Transients, Cables and Power Leads”. MIL-STD-461 assigns applicability to a broad variety of applications and states the purpose is to verify the ability of the … [Read more...]
Review of MIL-STD-461 RE103 Antenna Spurious and Harmonic Outputs
Introduction Technology frequently embeds transmitters in a myriad of devices to support an Internet Of Things (IoT) concept from identification to condition-based actions, and this IoT approach includes defense operations. Devices may include multiple transmitters that a few years ago did not include communications of any sort. Inclusion of RF transmitters has prompted a … [Read more...]
Review of MIL-STD-461 CS103 Intermodulation, CS104 Rejection of Undesired Signals and CS105 Cross-Modulation
Introduction Rapid technology advances in the wireless communications world make test and evaluation of Radio Frequency (RF) devices a difficult subject. It seems that by the time a new device hits the market, it has been made obsolete by the next generation. I recall hearing from a major electronics manufacturer CEO that 90% of sales happen within 90-days of market release … [Read more...]
30-Meter Far Field EMI Testing
Induction cooktop testing D.L.S. performs 10-meter and 30-meter distance far-field EMC testing to support formal EMC certifications where 30-meter test distance is a specific requirement at 9 kHz to 30MHz frequencies. This testing can be used to show compliance for FCC part 18, FCC part 15, and other global emissions standards. Products include induction cooktops, restaurant … [Read more...]
Review of MIL-STD-461 CS117 Lightning Induced Transients, Cables and Power Leads
Introduction Lightning may produce a spectacular display when viewed, but the associated electromagnetic effects (EME) has the potential (pun intended) to severely damage electrical and electronic circuits. MIL-STD-461G added a new test method to evaluate device tolerance for induced current on equipment cables or insulation breakdown from the effects of indirect lightning. … [Read more...]
EMC Laboratory Selection Audit Items
Introduction This blog will provide the reader with an introduction to some of the items that need to be looked at when auditing an EMC laboratory with an eye to placing them on your company’s approved lab list. This is not an in-depth look at each item but is based on my experiences auditing laboratories (both in-house and 3rd party) over a number of years. Key … [Read more...]
The Top-Ten Articles and Blogs as of December 2018
Most magazines like to review the top ten most viewed articles this time of year and Interference Technology is no different. We think our readers and authors are awesome and enjoy highlighting some of the most popular articles to date. So, here we go: What is differential and common mode current, by Ron Brewer. Unwanted conductive and radiative emissions can be … [Read more...]
