Firetide, a provider of high-performance wireless infrastructure mesh networks, has collaborated with California State University at Monterey Bay (CSUMB) to design and install “the world’s first” permanent outdoor wireless mesh networking facility “dedicated to the research, development and testing of new mobile communications infrastructures.” According to the company, the … [Read more...]
Naval Radar System Identifies Objects at Mach 3, Blocks Interference Equivalent to 10,000 Cell Phone Signals
With the ability to detect more than 800 objects the size of a tennis ball traveling simultaneously at three times the speed of sound, the British Royal Navy’s new medium range 3D surveillance radar is reportedly the most advanced radar system ever developed. According to developer BAE systems, the new radar is constructed of lightweight carbon glass fiber materials similar to … [Read more...]
Google Launches White Spaces Trial for Wireless Broadband
A six-month trial in South Africa will test the feasibility of offering wireless broadband over a white space network, Google announced earlier this week. In cooperation with several organizations in South Africa, Google will provide 10 schools near Cape Town with wireless broadband over white spaces—sections of unused spectrum between frequencies reserved for broadcast TV … [Read more...]
Double-Ridged Horn Antenna for Radiated Emissions and Immunity Applications
Teseq Inc., a developer of instrumentation and systems for EMC emission and immunity testing, has released the PMM DR-01 double-ridged horn antenna for radiated emissions and immunity applications. The corrosion-resistant PMM DR-01 antenna measures approximately 2.2 in x 1.7 in x 5.4 in and features individual calibration and a nominal impedance range of 50 ohms. According to … [Read more...]
Automotive Interconnect System Offers “High Bandwidth Performance,” Design Versatility
Interconnect solutions developer Molex Inc. has introduced the HSAutoLink II interconnect system for linking multiple high-speed media protocols in automotive electronics, including in-vehicle infotainment, telematic devices, radio and navigation systems, intelligent assistant systems and collision avoidance vision systems. "Popular infotainment and safety features utilizing … [Read more...]
Carbon Nanotubes Less Electromagnetically-Sensitive than Current Systems, May Open Door to Growth of Quantum Computing
Physicists at the Technische Universitaet Muenchen (TUM) in Munich, Germany have demonstrated a way for nanotubes to store information in the form of vibrations, opening the door to the possibility of replacing traditional, but still mostly experimental, systems based on electrically charged particles held in an “electromagnetic trap” that require extensive shielding with … [Read more...]
FAA to Lift Electronics Flight Ban by End of Year, Sources Say
The Federal Aviation Administration (FAA) may soon lift the ban on the use of personal electronic devices (PEDs) during taxiing, take-off and landing and establish new rules on the use of tablets, laptop computers, e-readers and portable media players by the end of the year. The changes will not include cell phones. The New York Times reported Sunday that an FAA official and a … [Read more...]
Filter Capacitor Selection Criteria for Linear Voltage Regulator Applications
Author Steven Weir Abstract While voltage regulator vendors often suggest generic filter capacitors for use with their devices, these recommendations are often both vague and fail to take into account the effects of the larger PDN bypass network on VRM response. Filter Capacitor Networks Figure 1 depicts a generic PDN conceptual model. Moving from left … [Read more...]
Simulation of GHz Insertion Loss Components; Cross-Section Geometry Influence on Conductor Loss
Tracey Vincent Application Engineer, CST ABSTRACT To attain realistic estimations of simulated insertion loss, all insertion loss components need to be considered and accounted for. In particular, the dielectric and conductor loss components can require careful material parametrization in order for 3D simulated loss to be realistic. An overview of these parametrizations is … [Read more...]
The Electromagnetic “Triple Threat” and the Critical Infrastructures Revisited
Author Dr. William A. Radasky, Ph.D., P.E.; wradasky@aol.com; Metatech Corporation Introduction In 2009 this author first used the term “triple threat” to describe three severe electromagnetic (EM) threats and the protection methods available to protect commercial installations from the high-altitude electromagnetic pulse (HEMP) produced from a nuclear detonation in space, the … [Read more...]
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