DARPA seeks proposals for solutions concerning pulse lasers for use as low phase noise microwave oscillators for secure communications among other applications. Pulsed lasers are known as frequency combs because they are composed of thousands of individual laser lines, equally separated in frequency like the teeth of a comb. DARPA is looking for methods of efficiently … [Read more...]
New Magnetic Field Coil Generates Fields up to 1200 A/m
Teseq, a provider of instrumentation and systems for EMC emission and immunity testing, has introduced a new magnetic field coil that generates fields up to 1200 A/m during magnetic field testing. The INA 703 is designed for testing to IEC 61000-4-8 (supply frequency magnetic fields), IEC 61000-4-9 (pulsed magnetic fields) and IEC 61000-4-10 (oscillatory magnetic fields) … [Read more...]
Fabric-over-Foam EMI Gasket Suits More Applications
Chomerics Europe, a division of Parker Hannifin, introduced a low-closure-force EMI gasket suitable for applications in the automotive, military, medical and telecommunications sectors. Rated for use in temperatures up to 125°C, Soft-Shield 3700 is a fabric-over-foam (FOF) material that employs a conductive fabric wrapped around a soft, cellular silicone foam. Available in a … [Read more...]
Study Links Electromagnetic Exposure to Childhood Obesity
A 13-year-long study conducted by Kaiser Permanente concluded that in-utero exposure to relatively high magnetic field levels was associated with a 69 percent increased risk of being obese or overweight during childhood. These findings indicate that electromagnetic fields, from microwave ovens to countless wireless devices, may be contributing to childhood obesity … [Read more...]
Band Pass Filter Chip With User Selectable Passband Frequency
Hittite Microwave Corporation introduced the HMC897, a new band pass tunable filter chip that is ideal for pre-selection in advanced communications systems, military radar, EW/ECM, SATCOM, space, industrial and medical systems. Tunable over a 9 to 19 GHz frequency range, this new, ultra-compact, varactor-tuned MMIC filter is inherently stable and has small physical size and … [Read more...]
Ultrasound Receiver Conditions Eight Channels of RF to Baseband
Analog Devices unveiled its octal ultrasound receiver with on-chip digital I/Q demodulation and decimation filtering, the AD9670. Because of the embedded demodulation and decimation feature, the AD9670 is able to condition eight channels of data from RF to a baseband frequency, reducing the processing load on the system FPGA by at least 50 percent. The AD9670 also integrates a … [Read more...]
Terahertz Signal on Silicon Chip Could Scan for Cancer
Cornell researchers have developed a new method of generating terahertz signals on an inexpensive silicon chip, offering possible applications in wireless data transfer, medical imaging, and security scanning. Terahertz radiation has the potential to carry more bandwidth and eliminate the damaging effects of X-rays, but the expense has always made it commercially … [Read more...]
Moth Eyes Inspire X-ray Improvements that Reduce Radiation Exposure
An international team of physicists has developed new nanoscale materials that could someday reduce the radiation dosages caused by X-rays, while also improving the resolution of the resulting images. The material was inspired by moth eyes, which are remarkably … [Read more...]
New Flexible EMC/EMI Filter Modules
The Schaffner Group has expanded its product range with new EMC/EMI filter modules. The FN9280 series is equipped with single-stage EMC/EMI filters while the FN9290 series has a double-stage EMC/EMI filter with an attenuation of up to 80dB. The FN9290 series is suited for applications with higher interference levels, and the B versions of both series are suited for use in … [Read more...]
Device Injects Medicine without Using Needles
MIT researchers have engineered a device that delivers a tiny, high-pressure jet of medicine through the skin without the use of a hypodermic needle. The jet-injection system delivers a range of doses to variable depths in a highly controlled manner. According to MIT, the design is built around a mechanism called a Lorentz-force actuator — "a small, powerful magnet surrounded … [Read more...]
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