A federal judge has dismissed a class action suit that alleged that cell phone service providers have conspired to hide evidence that the radio frequency emissions from cell phones pose dire biological hazards including the possibility of brain cancer. In a 46-page opinion, Senior U.S. District Judge John R. Padova of the United States District Court for the Eastern District of … [Read more...]
Turkish Study Indicates That EM Fields Harm Embryonic Rats
A study published in the medical periodical Brain Research has once again stirred up the recurrent controversy about possible ill effects from the exposure to electromagnetic fields that occurs with cell phone use. This recent study has focused attention on the advisability of cell phone use by pregnant women. The study entitled “Effects of prenatal exposure to a 900-MHz … [Read more...]
Miniature EMI Filter Arrays with ESD Diodes Target Mobile Handsets
A new family of electromagnetic interference, low-pass RC Pi filter arrays from OnChip comes with onboard diodes for electrostatic discharge (ESD) protection. These devices are crafted specifically for high-speed data LCD and memory card interfaces in mobile phones, PDAs, and MP3 players. The OC1425 is a 4-channel EMI filter while the EMF4020 and the OC1442 are 8-channel EMI … [Read more...]
Embedded FRAM-LSI Counteracts EMI in Mobile Phones and Other Applications
The MB88R157 from Fujitsu Microelectronics Limited (FML) is an addition to its existing line of spread-spectrum clock generators used to counteract EMI on high-frequency clock signals. This device includes an embedded FRAM (ferroelectric random access memory), which features fast rewriting speed and can vary its frequency output over a range of 1 MHz to 134 MHz while mounted on … [Read more...]
Test System Available in 1- or 3-Phase Versions
The MIG1206-xP-T from EMC-Partner is an integrated CWG and 10/1700-µs telecom test system. It is available in 1- or 3-phase versions for enhanced level testing of telecom and power interfaces. The unit incorporates a 12-kV/6-kA combination wave together with a 6-kV 10/700-µs impulse along with an automatic CDN for AC or DC power supply applications. Typical standards requiring … [Read more...]
Embedded FRAM-LSI Counteracts EMI in Mobile Phones and Other Applications
The MB88R157 from Fujitsu Microelectronics Limited (FML) is an addition to its existing line of spread-spectrum clock generators used to counteract EMI on high-frequency clock signals. This device includes an embedded FRAM (ferroelectric random access memory), which features fast rewriting speed and can vary its frequency output over a range of 1 MHz to 134 MHz while mounted on … [Read more...]
European Parliament Recommends Stricter Safety Limits for Exposure to EMFS from Cell Phones
Last week the European Parliament voted 522 to 18 to recommend tighter safety for exposure to cell phone emissions. In their Mid-Term Review of the European Environment and Health Action Plan, members of the European Parliament expressed regret that their report was not based on a preventive policy and urged the adoption of a new dynamic approach based on precautionary … [Read more...]
A Unique Online Collaboration
The InterferenceTechnology.com website includes 11 Forums covering the major technologies and markets within the EMI/EMC sector. If you’ve a query, a problem, or an observation, just post it to the appropriate Forum. Join the “conversation”—it’s as simple as entering your email address and choosing a password. For example, the NEBS/Telecom Forum includes some intriguing … [Read more...]
Ofcom Proposes Band Manager for Airwaves Used by Wireless Mikes
British telecom regulator Ofcom has issued detailed proposals for selecting a band manager to protect the needs of wireless microphone users as the UK transitions to digital television broadcasting creating what is referred to as “interleaved spectrum” with both microphone users and digital television broadcasters using the airwaves. As the advent of digital television looms on … [Read more...]
Federal Commission Completes Report on Consequences of an EMP Attack
The Commission to Assess the Threat to the United States from Electromagnetic Pulse has issued a 208-page report detailing a grim scenario of cascading disasters as critical infrastructures fail. If terrorists were to obtain a nuclear weapon and to detonate it over the continental United States, every facet of modern life that depends on electricity would be impacted. The … [Read more...]
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