A new line of filtered modular jack connectors from Spectrum Advanced Specialty Products protects equipment from both conducted and radiated EMI in an industry standard package. These compact filtered PCB connectors provide high reliability and are fully “intermateable” and interchangeable with existing standard unfiltered RJ45 modular jack connectors. These new jacks assist … [Read more...]
Cable Assemblies Feature 100 dB of Shielding
A new line of high performance hand-formable cable assemblies has been introduced by Electronic Assembly Manufacturing (EAM). These cable assemblies provide typical insertion loss of 0.7 dB/ft. at 20 GHz for 0.141-inch diameter cables. VSWR is 1.3:1 at 18 GHz with capability past 20 GHz. These hand-formable cable assemblies minimize signal losses by means of a PTFE dielectric, … [Read more...]
Design Kit Helps Engineers to Achieve Multi-GHz Performance with 2-mm PCB Connectors
The new Shielded Controlled Impedance (SCI) Cable Assembly Development Kit from the 3M is designed to help engineers create the appropriate high performance 2-mm cable-to-board solution for their particular application. When used with standard 2-mm latch/eject headers from 3M for multi-GHz cable-to-board applications, the SCI connectors conserve PCB space without compromising … [Read more...]
Filtered Audio Connectors Include ESD Protection
Adding to its line of standard MIL-DTL-55116 capacitive filtered audio connectors, Spectrum Control is offering an updated device that includes ESD protection up to 8 kV direct discharge and 15 kV air discharge. These EMI-filtered/ESD-protected connectors are well suited to aviation, communication, and security applications in which an electronic system using the audio … [Read more...]
More Connector Products
100-Position PCB Connector Include EMI Protection The MDM PCB connector from ITT Interconnects is a microminiature connector capable of providing 100 signals in a lightweight, compact package. This connector features contact pitch spacing of 0.050″ and provides maximum signal density for applications where PCB space is at a premium. EMI shielding has been integrated into this … [Read more...]
Curtis Industries Acquires Filter Networks
Milwaukee, WS-based Curtis Industries has acquired the electromagnetic interference filters and filtered connectors product lines of Filter Networks of Salisbury, MD. Curtis, a manufacturer of electromagnetic interference filters and wire interconnect terminal blocks, is a division of Power Holdings, Inc. of Milwaukee. Founded in 1935, Curtis operates a plant at 2400 S. 43rd … [Read more...]
Achieving More Accurate Measurement of Conducted RF Emissions Using Modified AMNs
Measurement uncertainty for common-mode disturbances can be reduced from about 22 dB to a maximum of a few dB Mart Coenen, Philips Applied Technologies Eindhoven, the Netherlands Introduction In early 1980, extensive discussions were held within the IEC CISPR/A working group regarding the definition of the impedance characteristics and the RF emission limits attained via the … [Read more...]
Building a State-of-the-Art 5-Meter Chamber
An efficient shield room for automotive testing progresses from design to finished structure Michael Koffink, Bob Mitchell Intertek ETL Semko Littleton, MA Four years ago, we noticed a growing demand for EMC testing from the automotive industry. As cars and trucks now feature myriad on-board electronic devices, they are increasingly susceptible to stray emissions while … [Read more...]
Lithium-zinc Ferrite for the Suppression of Electromagnetic Noise
Studies show that Li-Zn ferrites can successfully suppress EMI N.C. Joshi, S.S. Islam, Ph.D., Jamia Islamia University Jamia Nagar Anjali Verma, Ph.D., Indian Institute of Technology New Delhi, India Recent technological development has been characterized by an unprecedented proliferation of digital technology in information and communications equipment. The worldwide … [Read more...]
Reverberation Chamber for EMC Testing
The reverberation chamber provides the most realistic simulation/equivalency for electronics functioning within a cavity Er-Ping Li, Ph.D.; Xing-Chang Wei, Ph.D., Electromagnetic Labs, Singapore National Institute of High Performance Computing Singapore Introduction The problem is familiar, but growing. The widespread and ever-growing use of electronic devices with high-speed … [Read more...]
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