The LMV83x Series of operational amplifiers from National Semiconductor has integrated EMI filters that maintain the accuracy of analog systems by reducing the effects of RF (radio frequency) interference. They are reported to have an EMI rejection ratio (EMIRR) of 120 dB. The LMV831 single, the LMV832 dual, and the LMV834 quad op amps feature CMOS inputs, a maximum inset … [Read more...]
Online Drawing Feature Aids Purchasers of Board-Level Shields
A configurable PDF Drawing feature offered by Tech-Etch aids purchasers of both single-piece and two-piece board level shields. Users simply go to the Tech-Etch website. The first step is choosing either through-hole mounting with pins or standard surface mounting. Depending on the user’s choice, seam options and required dimensions are then filled in. Next, the metal material … [Read more...]
Aluminum SMD Capacitors Target Consumer and Industrial Applications
A new line of SMD electrolytic capacitors from EPCOS covers a capacitance range from 0.1 µF to 1500 µF and are suited for voltages from 4 VDC to 100 VDC. Versions are available for temperature ranges from -40 to +85 degrees C. Depending on the CV value, the case sizes vary between 4 mm x 5.4 mm and 10 mm x 10 mm (d x l). The B41142* series with ESR values from a minimum of 0.8 … [Read more...]
Detroit EMC2008 – Extensive interest shown in MILMEGA’s 1-6GHz amplifier solution
Visitors to the MILMEGA booth at the Detroit EMC 2008 exhibition hall showed extensive interest in the new hybrid 0.8-6.0GHz power amplifier on display there.Of particular interest was the modular, scalable architecture permitting a selection of power levels in the two bands (0.8-2.0GHz and 2.0-6.0GHz internally switched) and an easy, proven route for upgrades in power. The … [Read more...]
Russian Scientist to Receive Prestigious Prize in Electromagnetic Science
Scientific and business media firm Springer has announced that a member of its editorial board Alexander G. Litvak will receive the 2008 Kenneth J. Button Prize, which is administered by the Institute of Physics in London. This award is based on his outstanding contributions to research on plasma physics and the generation and amplification of coherent millimeter wave, … [Read more...]
FCC to Test for Interference Between Wi-Fi and Cellular Phone Networks
The Federal Communications Commissions’ Office of Engineering and Technology has begun running tests in Seattle, WA to determine the extent of spectrum interference between next-generation Wi-Max systems and cellular phone networks. A provision of the FCC’s slated auction of the 2155- to 2180-MHz band is that a winning bidder must set up a free wireless broadband network. … [Read more...]
South Carolina Seeks to Jam Cell Phones within Prisons
As this eNews was being prepared, a scheduled demonstration at the Lieber Correctional Institution in Ridgeville, SC was postponed because of severe weather conditions. Presumably, it will be rescheduled. The South Carolina Department of Corrections and Florida-based electronics firm CellAntenna Corporation had planned a demonstration of CellAntenna’s equipment on Tuesday, … [Read more...]
Federal Judge Dismisses Suit Alleging EM Harm from Cell Phones
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...]
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...]
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