Dear readers, Welcome to the 2016 EMC Europe Guide. We welcome you to a new year in EMC and continue, as always, to provide you with the most current EMC information in our eighth annual guide dedicated to Europe. This upcoming year presents quite a few new standards and directives that are important for electronics engineers to be aware of. Below are a few, with additional … [Read more...]
Why ANSI/ESD S20.20 1-Foot Rule for Charge Generators needs to be Increased to 1-Meter for Aerospace & Defense
INTRODUCTION IN THE SEMICONDUCTOR SECTOR TODAY, ESD sensitive devices can be damaged at <+/-50 volts. Aerospace & Defense cannot issue a Return Materials Authorization (RMA) for an ESD sensitive device that fails in space or a nonfunctioning weapon system in-theatre. The fact that extruded film can charge up to over +/- 100,000 volts below 20% RHhas been … [Read more...]
Mobile Generations Explained
The evolving mobile communications technologies provide us with vastly increasing data rates, faster response times and increasingly fluent means to access more content than ever in the history of telecommunications. Along with the development of the standards, the commercial solutions keep appearing for our selection. Often in this highly dynamic environment, the vast amount … [Read more...]
Mains Input Filters – What is Inside the Box and Why?
J M Woodgate BSc(Eng) C.Eng MIET SMIEEE FAES HonFInstSCE J M Woodgate and Associates jmw@jmwa.demon.co.uk www.jmwa.demon.co.uk These days, it's common practice to buy-in mains input filters in the shape of metal boxes with four or five terminals. The supplier's lists may be consulted, and advice sought, but often the same filter as was used for a previous product is … [Read more...]
CISPR 32 – What is it, Why was it Written and Where is it Going?
Ghery S. Pettit, NCE President, Pettit EMC Consulting LLC Introduction CISPR 32, “Electromagnetic compatibility of multimedia equipment – Emission requirements” was first published in 2012. This standard came about due to a major development in consumer electronics, the digital television receiver. The CISPR is a special committee of the IEC. CISPR stands for … [Read more...]
How do you measure 5G?
By Lars Jacob Foged The development of 5G cellular networks is well underway and requires a new approach to ensure accurate measurement of the antenna components. With flexible radiation patterns which are capable of adapting to the changing situations in mobile networks, the full characterisation of the Active Antenna System (AAS) in 3D space has been the focus of … [Read more...]
Spectrum Supportability Risk Assessments: An Overview
By Brian Farmer Introduction As we ride on the cusp of a new age of electronic warfare, management and use of the electromagnetic spectrum are becoming increasingly important. In fact, the Department of Defense (DoD) has deemed the electromagnetic spectrum a critical resource and has established DoD Instruction 4650.01, which defines policy and procedures for … [Read more...]
A Solution to Enhance Reproducibility With Radiated RF Emission and Immunity Measurements?
Mart Coenen EMCMCC, Breda, the Netherlands. Most, if not all electrical and electronic appliances have to be tested on their radiated RF emission and their immunity against RF radiated fields. This radiated testing occurs either on an open area test site (OATS) or in an anechoic or semi-anechoic room (SAR). The electrical and electronic appliance to be measured … [Read more...]
The Simplified Method and the Near-Field Catastrophe
The simplified method, and in particular the system base-RF-power determination used in the simplified method equation, only applies to far-field data. Why? Well, as an example, the radiation polar-plot provided by antenna suppliers is far-field data and in no way represents how the field-strength varies with angle close to the antenna.So where exactly is the near-field / … [Read more...]
Incorporating Antenna VSWR Loss into the Simplified Method
The Simplified Method of Establishing the RF Power Required by a RF Immunity System Continued...Previously we presented the novel idea that the RF power required by a RF immunity system is a base RF power level (determined entirely by constants), minus the gain of the antenna. The basic principle is shown pictorially in Figure 1. The picture says the system RF power requirement … [Read more...]
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