Pat Moore, MILMEGA Ltd., UK Introduction With the recent release of IEC61000-4-3 Edition 3, many EMC test houses are actively researching the availability of equipment capable of meeting the testing demands presented by the new 6 GHz upper frequency limit. The conventional solution offered by EMC equipment suppliers has several major disadvantages, particularly as regards … [Read more...]
Amplifers
Antenna Selection for Automotive EMC Emissions and Immunity Applications (100 kHz to 18 GHz)
Optimum antenna selection plays a vital part in effective automotive emissions testing VICENTE RODRIGUEZ, PH.D. INTRODUCTION The following article describes the best antennas for meeting the requirements of full vehicle automotive EMC. The document is divided in to two main sections: Emissions and Immunity. The purpose of this article is to enlighten users on the best solution … [Read more...]
Selecting Antenna/Power Amplifier Combinations for the Coming New RF Immunity Standards
Though far from certain, it looks as if 6 GHz is a strong candidate for the upper frequency for consumer products. Art Cohen A.H. Systems, Inc., Chatsworth, CA, USA Thomas Mullineaux Empower RF Systems, Inc. Inglewood, CA, USA Testing products for susceptibility to radiated fields above 1 GHz is on the horizon. The new medical standard now stipulates testing to 2.5 GHz, and … [Read more...]
Coping with Reflected Power in RF Immunity Systems
EMC system engineers face trade-offs when selecting high power amplifiers for RF immunity testing. During testing, the amplifier must withstand high levels of reflected power. An appreciation of how reflected power affects an amplifier is important if well-informed decisions are to be made. This article uses a simple thought experiment to de-mystify this complex phenomenon and … [Read more...]
Integrated Inductive Component Reduces Radiated Emissions in Power Applications
The geometry of magnetic components can affect the incidence of unwanted low frequency radiation in the magnetic field. Gabriel Arianes, David Castillo, Raquel Garcia and Oscar Perez; Ferroxcube, Guadalajara, Spain INTRODUCTION The miniaturization trend has resulted in smaller components and greater board densities in electronic applications. This very density, which … [Read more...]
EMI Filters for Cardiac Pacemakers and Implantable Defibrillators
The use of ceramic feed-through capacitors, as well as specific filter designs and installation techniques, can make cardiac pacemakers immune to EMI ROBERT A. STEVENSON, Maxwell Technologies Carson City, Nevada, USA Under the coordination of Wireless Technology Research, L.L.C. (WTR), the interaction between cellular phones and cardiac pacemakers has been widely … [Read more...]
- « Previous Page
- 1
- …
- 46
- 47
- 48