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Interference Technology

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Antennas

C63® Workshops at IEEE EMC Symposium

 

C63® Workshops on C63.4 and C63.5/Time Domain will be held July 23-24 in Fort Lauderdale, Fla., just prior to the 2010 IEEE International Symposium on EMC.EMC Society Members who register by June 15 can save with the early registration fee.TOPICS INCLUDE:·         The 2009 edition of ANSI C63.4 (emission measurements)·         ANSI C63.5 (antenna calibration) - including the … [Read more...]

Lab Selects R&S Platform for Conformance Testing

 

Lab Selects R&S Platform for Conformance TestingPCTEST Engineering Laboratory Inc. has selected Rohde & Schwarz (R&S) LTE Test Platform as its 4G test solution for Carrier Conformance testing requirements. PCTEST Engineering Laboratory is an approved Over-The-Air (OTA) Antenna Performance Lab, and a test laboratory supporting compliance and certification in RF and … [Read more...]

The Dip Tube

 

A formalized materials qualification process is essential in preventing non-conforming or suspect counterfeit packaging that can lead to ESD hazards during parts inspection process, long-term storage issues and failures in manufacturing. Robert J. Vermillion, CPP/Fellow, RMV Technology Group, LLC, NASA-Ames Research Park, Moffett Field, CA The aerospace community has made … [Read more...]

Extending the Concept of Common Mode Noise: Single Mode

 

Electronic switching circuits are used for power conversion, data communication and other applications. According to the theory of Fourier Transform, in these circuits, the periodical change of the current/voltage produces harmonics in a wide frequency spectrum. The resultant currents of these harmonics are called conducted emission (CE), and are categorized classically as … [Read more...]

COTS Alternatives to MIL SPEC Flexible Conduit Systems for EMI/RFI Containment

 

Applications, electrical and physical performance, termination and installation factors of shielded flexible conduits. Linda Sardone, Zero Ground Electronic solutions for military and government equipment and installations are expanding rapidly, and the need for supplemental shielding of cable runs via conduit is moving beyond traditional applications requiring MIL SPEC … [Read more...]

In-situ EMC Testing Using Surface Current Sense Wires

 

Mart Coenen, EMCMCC bv, Eindhoven, the Netherlands Tim Maas, ASML bv, Veldhoven, the Netherlands Yili Hu, Student Eindhoven University of Technology, the Netherlands Arthur van Roermund, Eindhoven University of Technology, the Netherlands ABSTRACT In-situ EMC testing is, for large fixed systems and installations within the scope of the European EMC Directive, not a primary … [Read more...]

Choosing the Right Chamber for Your Test Requirements

 

Martin Wiles, Vince Rodriguez, ETS-Lindgren Developments within standards community has led to new chamber validation procedures above 1 GHz and alternative test methods using FARs. INTRODUCTION Anechoic chambers are used today for performing EMC measurements according to a variety of published EMC standards. There are many different fields of application, including … [Read more...]

Radiated Emission Measurements at 1/3/5/10/30 Meters

 

Daniel Hoolihan, Hoolihan EMC Consulting, Lindstrom, MN Trend shifts towards making measurements at antenna distances closer and closer to the equipment-under-test. INTRODUCTION There are two principal types of emission measurements in the world of electromagnetic compatibility: conducted emission and radiated emission. The conducted emission measurements are either a … [Read more...]

Egregious Errors in Electromagnetic Radiation Evaluation

 

Reasons for widely differing results in commercial radiated emission measurements. MIL-STD-461 RADIATED EMISSION MEASUREMENTS In 1967, the first version of MIL-STD-461 was introduced. Radiated emission measurements were allowed outside of a shielded room but due to the low levels of radiated emission limits, compared to an average ambient, measurements were invariably made … [Read more...]

New CISPR 16 Standard Dealing with Radio Disturbance

 

Specification for radio disturbance and immunity measuring apparatus and methods. Part 1-4: Radio disturbance and immunity measuring apparatus – Antennas and test sites for radiated disturbance measurementsThe International Electrotechnical Commission has released a new CISPR 16 standard dealing with radio disturbance and immunity measuring apparatus and methods for antennas … [Read more...]

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