Researchers from the University of Cambridge in England have announced an electromagnetic breakthrough – the production of an antenna so small that it can be incorporated into electronic chips. They realized electromagnetic waves are not only generated from acceleration of electronics, but also from symmetry breaking. “Symmetry breaking in physics describes a phenomenon where … [Read more...]
EMC War Stories: Letters from Home Part 2: It’s hard for my computer to sleep when I’m doing the laundry
Candace Suriano Suriano Solutions John Suriano Nidec Automotive Motors Americas Dear John, Once again it’s a cold dry winter here and I have found that there is a great way to keep warm— by doing the laundry. I discovered something really strange, though: when I’m taking the laundry out of the dryer it sometimes wakes up the computer on the desk almost ten feet away! I knew … [Read more...]
Harmonic Comb Generators Are Useful Tools
By Kenneth Wyatt INTRODUCTION One tool every EMC test lab should own is a harmonic comb generator. A comb generator is simply a device that will produce a set of harmonically related CW signals whose spacing is based on a fundamental oscillator frequency. For example, if we were to start with a 10 MHz clock oscillator and feed the digital output into a coax connector, we’d … [Read more...]
Tech Tidbit: Gwyneth Paltrow has ‘Golden Halo’ in Electromagnetic Image of Aura
Gwyneth Paltrow, a well-known actress, recently had her “aura read” and posted an image of it on her blog ‘Goop.’ The picture was taken by Christina Lonsdale using a rare camera invented in 1970 for the sole purpose of capturing people’s auras. Electromagnetic fields that surround our bodies, also known as auras, are normally invisible; however, they can be illuminated with … [Read more...]
CISPR 32 ed2.0
Publication date: 2015-03-31 CISPR 32 ed2.0 has been released. The standard is titled "Electromagnetic Compatibility of Multimedia Equipment - Emission Requirements." CISPR 32:2015 is available as Standards+ CISPR 32:2015 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. CISPR … [Read more...]
MIL-STD-461G New Draft Released
A new draft of MIL-STD-461G - Department of Defense Interface Standard - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment has been released by the Department of Defense on April 1. NOTE: This draft, dated 2 March 2015 prepared by AF 11, has not been approved and is subject to modification. To view the draft, click … [Read more...]
Programmer Hacks Own Wi-Fi Using Electromagnetic Waves
Jason Cole, a programmer and Ph.D. student at Imperial College in London, created an Android app that allows users to hack their own Wi-Fi using electromagnetic waves. Many believe it’s best to avoid electromagnetic radiation; however, not all believe electromagnetic waves are bad. Electromagnetic waves carry Wi-Fi signals to all electronic devices and are the foundation of … [Read more...]
FCC to Vote on Airwaves Sharing Plan
The Federal Communications Commission (FCC) will vote next month on a plan that will allow companies and wireless carriers to share airwaves with the government. The FCC has been working to increase the spectrum for many years and has set aside frequencies for new Wi-Fi networks. This sharing plan was designed to make more airwaves available for future wireless devices. “The … [Read more...]
Physicists Discover Graphene Absorbs up to 50 Percent of Microwave Radiation
A team of physicists from the University of Namur in Belgium have discovered that graphene serves as an effective shield against microwave inference. Graphene has the ability to reduce microwave pollution and to enhance the electromagnetic compatibility of future electronic devices. Philippe Lambin, project lead, and and his colleagues demonstrated that “the conductivity of … [Read more...]
U.S. Navy Tests Electromagnetic Catapult
Traditional steam-powered catapults assist aircraft carriers’ jets and bombers in getting off the ground as quick as possible on a short runway. The U.S. Navy is now testing an electromagnetic version of a catapult on the 337-metre long USS Gerald R. Ford aircraft carrier. “The Electromagnetic Aircraft Launch System (EMALS) uses a burst of electromagnetic energy to launch … [Read more...]
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