Thales Components Corp., Totowa, N.J., is being awarded a $26,673,048 for an indefinite-quantity of 250W traveling wave tubes for use in a satellite communications system. Work will be performed in Velizy, France and is expected to be completed by February 2012. Learn more by visiting the DefenseLink website."Does your company manufacture its products overseas? Check … [Read more...]
EMC Antenna Parameters and Their Relationships
*originally published in June 1997. Introduction The basics of the EMC profession often get buried under the day-to-day effort of continuous measurement and the volume of test and reporting paperwork. The fundamental parameter of the most common of technical tools, the EMC antenna, is used over and over without thought as to its actual meaning. This parameter is the antenna … [Read more...]
Protective Device Provides 8 Channels of ESD Protection
The new CM1234 from California Micro Devices is the newest addition to the XtremeESD family that utilizes proprietary PicoGuardTM architecture. It features 8 channels of ESD protection that meet ±15 kV contact discharge and ±20 kV air discharge per the IEC 61000-4-2 standard, while meeting 100-ohm differential impedance matching requirements of HDMITM 1.3a and DisplayPortTM … [Read more...]
New Field Probe Provides E-Field Measurements from 10 KHz to 1 GHz
The LaserPro Field Probe from ETS-Lindgren provides E-field measurements from 10 KHz to 1 GHz. Features include auto-ranging, a dynamic range of 2.0 to 800 V/m, and a small physical profile for minimal field perturbation with improved isotropy. The Model HI-6122 laser powered probe joins a full line of laser probe offerings. It is available in two versions--laser-powered and … [Read more...]
IEC Issues Technical Report on EMC and Optimizing Shipboard Cable Installations
The International Electrotechnical Commission has issued IEC 62482 Ed. 1.0 (2008-02) entitled "Electrical installations in ships - Testing method of routing distance."This Technical Report defines a test method to determine minimum routing distances in order to avoid crosstalk of fast transients (bursts). The test results may be applied to cable installations according to IEC … [Read more...]
Appeals Court Holds That FCC Erred in Its Rulemaking on BPL Interference
Last Friday, the U.S. Court of Appeals for the District of Columbia issued a ruling that the Federal Communications Commission (FCC) had erred in rulemaking concerning broadband-over-power line (BPL) technology. Over two years ago when setting rules for BPL operators, the FCC espoused a policy encouraging deployment of a so-called "third-pipe" as a way to speed broadband access … [Read more...]
CISPR Specification on Ancillary Apparatus and Measurement of Radio Disturbance
CISPR 16-1-4 Ed. 2 (2008-01) is entitled "Specification for radio disturbance and immunity measuring apparatus - Part 1-4: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Radiated Disturbances." This part of CISPR 1600 is considered a basic standard, which specifies the characteristics and performance for the measurement of radiated … [Read more...]
The 3G Group Finalizes 4G Specification
Although not strictly an EMC standard, the efficacy of this new 4G specification will determine the quality of WiFi communications in an ever more crowded spectrum. The 3rd Generation Partnership Project, or 3GPP, has settled on the final specification for the upcoming fourth generation (4G) Long Term Evolution (LTE) for WiFi, which is expected to form the backbone of mobile … [Read more...]
Fundamentals of EMC Design: Our Products Are Trying To Help Us
INTRODUCTION We often design electronic products only to find that when we test them for electromagnetic compatibility (EMC), their emissions and/or immunity are not as good as we need them to be. Usually, at this time, we feel as if we are fighting against the laws of physics to contain the conducted and radiated emissions, or to reduce susceptibility. But in fact the laws of … [Read more...]
CST, Delcross Demonstrate Integrated Solution for Cosite Interference Analysis
Computer Simulation Technology (CST) and Delcross Technologies (Delcross) demonstrated initial integration and capabilities for cosite interference solutions this week at DoD Electromagnetic Environmental Effects (E3) Program Review in Orlando, Fla. Realistic environments containing multiple aggressors (transmitters) and multiple victims (receivers) pose significant engineering … [Read more...]
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