AT&T, Inc. has announced a $2.4 million gift to fund Clemson University's International Center for Automotive Research (CU-ICAR). Along with the investment comes the naming of the AT&T Auditorium, part of Clemson's Carroll A. Campbell, Jr. Graduate Engineering Center, the anchor of the 250-acre research campus now under development. During a preview of the auditorium, visitors … [Read more...]
EU Auto EMC Regulations
Almost all electrical and electronic devices fitted to most road-going vehicles, including after-market equipment, have to comply with the Automotive EMC Directive (2004/104/EC). This new Directive changes the type approval process - particularly in the case of aftermarket equipment. Approvals to the previous Directive (95/54/EC) are no longer valid. The course will explain the … [Read more...]
A Discussion on the FCC SAR Test Guidance Documents for Laptops and Handsets with Multiple Transmitters
The FCC will address exactly what TCBs can review for SAR and simultaneous transmitters in future updates to the TCB exclusion list. David A. Case, Cisco Richfield, Ohio, USA For those involved with product approval for Federal Communications Commission (FCC) certification, the use of the Telecommunication Certified Body (TCB) for approval helps speed the process for product … [Read more...]
EMI Absorber Sheets Work Below 1 GHz
EMI Absorber Sheets from 3M Electrical Markets Division provide enhanced absorption of electromagnetic interference at frequencies below 1 GHz. The 3M™ EMI AB5000S reduce EMI noise and harmonic coupling in electric equipment, cables, or circuits, including any portion covered by a shielded can. They reduce the EMI susceptibility of sensitive components, including RFID or Hall … [Read more...]
Silicone Gasketing Material Meets Requirements of MIL-DTL-83528
A family of conductive silicon elastomers from SAS Industries has been crafted for applications that require extremely high shielding effectiveness, environmental sealing, reliability, and durability. These elastomers are a unique composite of high quality silicone and conductive microscopic particles manufactured to strict formulations to yield gasketing materials that meet … [Read more...]
Three-Layer Filters Provides Dust Filtering and EMI Shielding
The ATI 3-layer filters from Alco Technologies is a superior dust filtration, EMI shielding filter for minimum air flow requirements. Aluminum extruded profiles surround three layers of aluminum screen and are welded in place. Three layers of wave-formed aluminum wire screen, each with a decreased depth are layered together in an arrangement resembling the look of a continuous … [Read more...]
Intertek Achieves Acceptance of Certification Marks from the United Arab Emirates
Intertek, well known for its EMI/RFI and other test offerings, has announced that its safety and certification marks have been formally accepted in the United Arab Emirates by the Dubai Civil Defense and Abu Dubai Civil Defense Departments. Intertek’s ETL and WHI marks acceptance provide manufacturers direct global market access to one of the fastest growing construction … [Read more...]
Crucial RF Shielding Selection Considerations
Gary Fenical Laird Technologies INTRODUCTION Designers must attenuate RF signals for various reasons. Since a product cannot be legally marketed unless it meets EMC requirements, designers must curtail RF signals above a certain limit. It is important to consider RF shielding materials at the beginning of a design project because choosing the correct kind of shielding upfront … [Read more...]
Understanding Shielding Effectiveness of Materials and Measurements in the Near-Field and Far-Field
When we treat the shielding effectiveness measurement with a uniform field, the results are similar for both near and far fields. Kermit O. Phipps and Philip F. Keebler EPRI EMC Laboratory, Knoxville, TN, USA INTRODUCTION Traditionally Schelkunoff’s shielding effectiveness equation is used universally in teaching and practice throughout the EMC community as a whole. In this … [Read more...]
UK Telecom Regulator Ofcom Announces Outcome of Radio Spectrum Auction
British telecom regulator Ofcom has announced the outcome of its fifth auction of radio spectrum. The auction was for spectrum in the 1452- to 1492-MHz band, known as the L-band. This part of the spectrum is well suited for offering services such as mobile television, wireless broadband, and satellite radio. One notable winning bidder was Qualcomm UK Spectrum Ltd, which paid … [Read more...]
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