As an EMC consultant, it seems that lately I’ve run into many client projects where radiated immunity has cropped up as the major issue. One reason for this may be the trend in using digital and analog circuits that are powered by 3.3 volts, and lower, which decreases noise margins significantly. Sensitive analog circuitry is also greatly affected. The compliance testing for … [Read more...]
EU Radio Equipment Directive to Require Universal Phone Charger
European Union politicians voted last week in favor of an update to radio equipment that would establish guidelines for a universal mobile phone charger and enact new standards for radio equipment. According to EU officials, the new Radio Equipment Directive aims to keep up with the growing number of “radio equipment devices” and ensure they do not interfere with each other by … [Read more...]
Software Option for EMC Testing in Line with New CISPR Standard
Test and measurement equipment provider Rohde & Schwarz has introduced a new software option for EMC tests on multimedia devices in line with the new CISPR 35 standard. Expected to be adopted in late March, the CISPR 35 EMC standard prescribes future disturbance signal testing requirements for multimedia equipment and will combine the current test standards for devices and … [Read more...]
Training the Intern and Elephant in the Test Room #2 Continued
Read other posts in the "Elephant in the Test Room" series here.Elephant #2 - Disharmony in Harmonic LimitsThe Room: RF immunity testingThe Elephant: The curbing of the contribution made by harmonics to a calibrated test-field varies wildly from standard to standard, and within standardsThe Culprit: Harmonic limits that are seemingly not well thought through, and / or are open … [Read more...]
Vector Signal Transceiver Features 200 MHz RF Bandwidth for Testing Latest Standards
National Instruments had released the new NI PXIe-5646R vector signal transceiver with 200 MHz of RF bandwidth designed for testing the latest wireless standards such as IEEE 802.11ac, 160 MHz WLAN and LTE Advanced. Engineers can use the open software design of the vector signal transceiver to develop channel emulation systems, radio prototyping, custom real-time signal … [Read more...]
Widest Band Amplifier Yet Opens Door to Ultrafast Broadband
A research collaboration between European scientists has yielded a breakthrough in wideband amplifier circuit design. Researchers from University College London (UCL), UK and Chalmers University of Technology, Sweden have successfully designed and tested an amplifier that operates from low GHz frequencies to frequencies exceeding 235 GHz. The new amplifier also features a gain … [Read more...]
MIT Study Sparks White Sands-SunZia Interference Debate
A new Massachusetts Institute of Technology study on the potential impacts of the proposed SunZia transmission line on White Sands Missile Range validates concerns regarding the project, a U.S. state lawmaker said earlier this week. Speaking to reporters during a telephone conference call on Tuesday, U.S. Congressman Steve Pearce of New Mexico said the study, which has not … [Read more...]
Portable Suction Devices May Interfere With Defibrillators
New research from scientists in the UK suggests that electromagnetic radiation from portable suction devices could interfere with some defibrillators, rendering them inoperable in a medical emergency. According to Siu-Man Lee, Ph.D. from the Royal United Hospital Bath, Philips HeartStart MRx defibrillators are known to fail without warning during battery power operation if … [Read more...]
ESD Simulator Pistol Upgraded with Color Touchscreen Display
Teseq, a developer instrumentation and systems for EMC emission and immunity testing, has enhanced its NSG 438 electrostatic discharge (ESD) simulator to include a new color touch display, allowing users to change settings and features right on the pistol. The NSG 437 ESD simulator also includes this unique, new feature. Reportedly the first ESD pistol on the market with a … [Read more...]
RF Capacitor Array for Tunable Filters in Consumer Wireless Applications
Tunable RF technology developer WiSpry has announced the WS1042 tunable RF quad capacitor array optimized for tunable filter applications. According to the company, this passive, non-fixed device enables RF designers to build adaptive frequency wireless networks, leveraging the highest possible Q that is required for widely tunable filter applications. Able to change filter … [Read more...]
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