MIT’s Lincoln Lab researchers have built a system that can see through walls from some distance away, giving an instantaneous picture of the activity on the other side. The researchers’ device is an array of antenna arranged into two rows — eight receiving elements on top, 13 transmitting below — and some computing equipment, all mounted onto a movable cart. But it has powerful … [Read more...]
Military
A Comparison between Gelatinous and Tacky Coated Type Packaging Carriers
Robert J. Vermillion, RMV Technology Group, LLC, NASA-Ames Research Center, Moffett Field, California USA; Doug Smith, DC Smith Consultants, Los Gatos, California, USA For years, semiconductor and aerospace engineers have fielded questions regarding the suitability of using gelatinous and tacky coated packaging materials for the distribution, storage, and sale of ESD sensitive … [Read more...]
A Time-Domain EMI Measurement System Up to 26.5 GHz with Multichannel APD Measuring Function
I. INTRODUCTION The advances in radio systems in the past and their ongoing progress has been joined by advances in measurement systems and, hence, they require further development of measurement and specification standards. Electric and electronic systems have to be designed and realized such that the escape of unwanted electromagnetic energy into the environment is … [Read more...]
Company Hires New Applications Engineer
AR RF/Microwave Instrumentation has hired Carl Mueller as Applications Engineer for the company's EMI Receiver, Conducted Immunity Systems and test software. Mueller will provide customer support and will also be involved in system development.Mueller comes to AR with more than 20 years of experience in military systems integration and testing. He has worked as Principle System … [Read more...]
Navy Deal Shields Chesapeake, Va. from Development
The City Council unanimously approved the sale of a conservation easement on land near the Northwest River to the Navy. The sale price was $1.55 million.Development is now prohibited on 640 acres of land near the river, which the city purchased in June for $3.3 million.For the Navy, keeping the land clear of development reduces the possibility of electromagnetic interference … [Read more...]
New Family of Coaxial Lightning Arrestors
NexTek, Inc. announces a new family of coaxial lightning arrestors designed to operate at frequencies up to 11 GHz. The SurgeGuard™ PTC-TNF-SAF-20G is a gas discharge tube-type lightning arrestor with TNC to SMA connectors. This PTC series surge suppressor is designed for use in DC to 11GHz microwave applications and provides industry-leading performance characterized by very … [Read more...]
Incorporating Radio Antennas into Clothing
Ohio State University researchers are finding ways to incorporate radio antennas directly into clothing, using plastic film and metallic thread.The Ohio State system surrounds the body with several antennas that work together to transmit or receive a signal, no matter which way a person is facing. An integrated computer control device senses body movement and switches between … [Read more...]
New Composite Shell Circular Connectors for Low Weight Applications
Spectrum Control’s new composite connector series feature shells fabricated from high grade thermoplastic. Designed to displace traditional metal connector shells for substantial weight reduction, this new addition to the Spectrum Control product line offers composite shell versions of its circular connectors in MIL-38999 series III and IV, available EMI filtered or … [Read more...]
Multi-tone Testing Can Save Both Time and Money
Jason Smith, Manager Applications Engineering; Pat Malloy, Sr., Application Engineer; AR/RF Microwave Instrumentation, Souderton, Pennsylvania, USA Given the huge amount of time required to conduct a radiated immunity test, it is no wonder operators “dream” of ways to improve efficiency to speed up the test. The musings generally go as follows: Can one antenna cover the … [Read more...]
EMC Testing above 1 GHz: The Deadline Looms
When first mandated in the 1990s, the stated objective of the EU’s Directive governing EMC was, in broad terms, that commercial and domestic equipment, and certain industrial systems, should neither cause interference or be susceptible to interference. They should not emit radiated or conducted energy at RF frequencies and they should be immune to such emissions, within … [Read more...]
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