Surface cleanliness is critical to good coating adhesion for any coating process Rocky R. Arnold, Ph.D. WaveZero, Inc. Sunnyvale, CA Many medical product manufacturers achieve electromagnetic compliance (EMC) for their electronic devices by coating the inside of the plastic enclosures with a conductive material; for example, silver-copper particle loaded paint, electroplated … [Read more...]
Military
Military COTS Filter Provides EMI Filtering & Transient Protection
The M-FIAM7 from Vicor is a DC front-end module that provides EMI filtering and transient protection. The M-FIAM7 allows designers using Vicor’s 28-V DC/DC V•I Chip modules to meet conducted emission/conducted susceptibility per MIL-STD-461E; and input transients per MIL-STD-1275A/B/D, MIL-STD-704A-F, and DO-160E. The M-FIAM7 accepts an input voltage of 14 to 50 VDC and … [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...]
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...]
RF Microwave Manufacturer Awarded $1.4 Million Order for High Power Amplifiers for Jamming
In another story touching on the art of jamming, or purposeful interference, RF microwave manufacturer Comtech Telecommunications Corporation has announced that its Melville, NY-based subsidiary, Comtech PST Corporation, has received a $1.4 million order from a domestic prime contractor to supply broadband, solid-state, high power radio signal jamming. These amplifiers, which … [Read more...]
Test Software Complies with a Wide Range of Standards
From on-site measurements to EUT control and monitoring, Nexio software covers a wide range of applications and offers more than 300 measuring device drivers. Designed, developed, and supported by specialists, Nexio’s BAT-EMC test automation software is the all-in-one solution for both emissions and immunity tests and is now widely used in the civil, automotive, military, and … [Read more...]
Test Software Complies with a Wide Range of Standards
From on-site measurements to EUT control and monitoring, Nexio software covers a wide range of applications and offers more than 300 measuring device drivers. Designed, developed, and supported by specialists, Nexio’s BAT-EMC test automation software is the all-in-one solution for both emissions and immunity tests and is now widely used in the civil, automotive, military, and … [Read more...]
Improving the Way We Measure Insertion Loss
A proposed set of new test methods may provide more accurate attenuation data Kermit O. Phipps, Philip F. Keebler, Bradford R. Connatser Many commercial and industrial electrical environments contain equipment that is sensitive to radio-frequency (RF) interference. Theft detectors, digital sensors, and medical-telemetry systems have all been known to malfunction in the … [Read more...]
Performing GR-1089-Core Lightning and Power Cross Test
A review of the test methodologies and equipment required to perform GR-1089-CORE lightning and power cross testing James Press, Jennifer Lawrence, Mark Betts, John Ngo ABSTRACT The pitfalls and difficulties in performing testing in accordance with GR-1089-CORE, Section 4 are discussed. A brief description of the GR-1089-CORE document is presented to familiarize the reader … [Read more...]
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