Scientists have released new theoretical and experimental work that suggests an innovative method using optical wavelengths to overcome certain restrictions on electric field evaluation. Current methods of mapping electric fields at radio frequencies employ certain metallic structures such as dipoles, probes and reference antennas. These structures, however, must be roughly … [Read more...]
Researchers Predict Electrical Resistivity of Metals Under Extreme Pressures
A study recently published in the Proceedings of the National Academy of Sciences (PNAS), headed by scientists at Rensselaer Polytechnic Institute (RPI), has demonstrated how subjecting metals to intense pressures could lower their electrical resistance, which could potentially lead to increased speed and performance in many technologies. Strain engineering, or the … [Read more...]
Storing Cell Phones in Your Front Pocket Could Lower Sperm Count, New Study Suggests
A recent meta-study conducted at the University of Exeter in the UK suggests that radio-frequency electromagnetic radiation (RF-EMR) emitted from cell phones kept in the pockets of men could be a major factor in the modern world’s fast-dropping sperm count. The study, "Effect of mobile telephones on sperm quality: a systematic review and meta-analysis,” led by Fiona Mathews, … [Read more...]
Real-Time Spectrum Analyzer Features 27 MHz IBW and Frequency Sweep of 24 GHz/Sec
Signal Hound has released its new BB60C real-time spectrum analyzer and RF recorder, successor to the Signal Hound BB60A. With significantly enhanced performance compared to its predecessor, the Signal Hound BB60C features a frequency range of 9 kHz to 6 GHz, an instantaneous bandwidth (IBW) of 27 MHz and the ability to sweep the RF spectrum at 24 GHz per second. The BB60C … [Read more...]
Break-Over Torque Wrenches for Use on RF Interconnect Components
Fairview Microwave, a supplier of microwave and RF products, has announced the release of new break-over type torque wrenches for precisely fastening connections between components and systems. The new break-over type torque wrenches are suitable for multiple RF connector types, including 1.0mm, 2.4mm, 2.92mm, 3.5mm, 7mm, SC, SMA, SMC, SSMA, SSMC, Type N and TNC designs. These … [Read more...]
Using Magnetic Fields to Track Footballs
Sports officials may soon have a better way of determining whether a football team has achieved a first down or scored a touchdown. Researchers from North Carolina State University, Carnegie Mellon University and Disney Research have developed a new system capable of accurately tracking a football in three-dimensional space using low-frequency magnetic fields. The new … [Read more...]
Improving Graphene/Polymer Composites for EMI Shielding
Researchers in China have discovered a way of improving how graphene is used in polymer segregated composites for electromagnetic shielding, using a novel in situ thermal reduction technique that maximizes electromagnetic interference shielding effectiveness (EMI SE) while reducing agglomeration. The use of graphene to build up polymer segregated conductive networks in … [Read more...]
Cell Phone Use for ½ Hour Per Day Linked to Increased Brain Cancer Risk
In a recent study conducted at the University of Bordeaux, researchers have found that using a cell phone for 15 hours a month, or roughly half an hour a day, can lead to a two to three times increase in a person’s chances of getting a brain tumor. The French study, published in British Occupational and Environmental Medicine, centered on 253 cases of glioma – a type of tumor … [Read more...]
IEC 61290-10-5:2014 – Optical Amplifiers – Test Methods – Part 10-5: Multichannel Parameters – Distributed Raman Amplifier Gain and Noise Figure
The International Electrotechnical Commission (IEC) has published IEC 61290-10-5:2014, “Optical Amplifiers - Test Methods - Part 10-5: Multichannel Parameters - Distributed Raman Amplifier Gain and Noise Figure." The new standard is available in the IEC’s webstore here. "IEC 61290-10-5:2014 applies to distributed Raman amplifiers (DRAs). DRAs are based on the process whereby … [Read more...]
NASA Uses Laser to Beam HD Video from International Space Station
NASA successfully beamed a high-definition video from the International Space Station to Earth last Thursday using a new laser communications instrument. The 175-megabit video transmission of “Hello, World!” was the first of its kind for the Optical Payload for Lasercomm Science (OPALS), a technology demonstration that allows NASA to test optical communications—also known as … [Read more...]
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