NASA’s Lunar Reconnaissance Orbiter (LRO) successfully passed EMC testing at the Goddard Space Flight Center in Greenbelt, MD. The orbiter will carry seven instruments to provide scientists with detailed maps of the lunar surface to increase our understanding of the moon’s topography, lighting conditions, mineralogical resources, and natural resources. The spacecraft will spend … [Read more...]
Reducing Ground Noise Emissions in Critical Electronic Equipment and Facility Ground Systems to Help Prevent Conducted EMI Problems
Many EMI problems involve emissions that circulate through electrical conductors within a facility and within equipment Philip F. Keebler and Kermit O. Phipps EPRI Knoxville, Tennessee Background The electromagnetic environment includes the areas inside and outside electrical and electronic equipment. The areas inside equipment include unused air spaces, circuit boards, cables … [Read more...]
Semi-Anechoic Chamber Expedites Avionic EMC Testing
A semi-anechoic chamber has been completed by ETS-Lindgren at Airbus in Hamburg, Germany. Valued at over €500,000, the chamber measures 12 x 6.7 x 6.5 meters and features an 8- x 4- x 2.9-meter control room. The chamber is to be used primarily for the EMC testing of electrical and electronic components and systems in aircraft. The new indoor, in-house test environment ensures … [Read more...]
Omni-Directional Antennas Target Broadband Spectrum Monitoring
Models 3180, 3181, and 3182 from ETS-Lindgren are a series of omni-directional, biconical antennas for monitoring broadband spectrum. In addition to receiving signals from every direction around the antenna axis, Models 3180 and 3182 feature optimized elements that forestall any splitting of the main radiation beam in the elevation cut. Models 3180 and 3182 cover the … [Read more...]
Optimal Techniques for Minimizing IR-Drop and Supply Bounce
Any multi-supply pinned microcontroller can be improved simply by altering the pin allocation Mart Coenen and Dick de Greef Phillips Applied Technologies Eindhoven, the Netherlands On-chip ir drop, ground bounce, and supply bounce are key parameters that may have a serious impact on both the functional reliability and the EMC of integrated circuits (IC). This paper presents a … [Read more...]
Capacitor Termination Can Enhance Reliability
Using a polymer termination for multilayer capacitors forestalls damage during PCB assembly Matthew Ellis For safety critical applications such as aerospace and military, failure caused by a short circuited capacitor could be disastrous. One of the most reliable components for surface mount communications is the multilayer ceramic capacitor, in which a block of ceramic … [Read more...]
The Importance and Methods of Full Wave Simulation Validation
Regardless of the accuracy of the modeling tool, each modeling exercise requires some level of validation before simulation results can be trusted. Bruce Archambeault, Ph.D. and Samuel Connor IBM Research Triangle Park, NC The need to validate simulations and model results has never been more vital. Full-wave and quasi-static simulation tools using many different modeling … [Read more...]
Texas Officials Hope to Resolve Prison Phone Jamming Controversy
As this issue of the eNews was being prepared, Texas politicians and prison authorities were trying to sort out the dilemma of jamming illegal phone calls by incarcerated felons without running afoul of the 1934 federal law that bans interference with radio signals. Earlier this year, officials in South Carolina had conducted a successful test of a jamming device that … [Read more...]
IEC Issues Standard on Testing & Measurement Techniques of ESD Discharge Immunity
The International Electrotechnical Commission (IEC) has issued IEC 61000-4-2 Ed. 2.0 (2008-12) entitled “Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement techniques – Electrostatic discharge immunity test.” This standard relates to the immunity requirements and test methods for electrical and electronic equipment subjected to static electricity … [Read more...]
More Software Products
Software Suite Eases EM Design with Accurate Computational SolutionsCST Studio Suite™ from Computational Simulation Technology is comprised of seven modules. CST Design Environment™ is the access point to the entire suite. CST Microwave Studio is a specialist tool for the fast and accurate 3D EM simulation of high frequency problems. Along with a broad application range, this … [Read more...]
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