Depressed collectors have been used for decades to improve the efficiency of vacuum-electronic based RF power sources by recovering energy from the spent electron beam of an RF source, such as a klystron or inductive output ...
Electronics & Semiconductors
Aug 28, 2014
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Diamagnetic levitation of pyrolitic graphite over a single magnet has been achieved, using commercially available magnetic field domain printing technology. Using this approach, levitation applications, including bearings ...
General Physics
Aug 28, 2014
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The first FitzHugh-Nagumo neuron circuit designed to include noise and exhibit the Ghost Stochastic Resonance effect has been presented by researchers from Université de Bourgogne in France. Their circuit operates according ...
Engineering
Aug 19, 2014
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A loss mechanism that has not been an issue in previous mobile handset antennas will become important for global 4G roaming, according to results of experiments carried out in Aalborg, Denmark.
Telecom
Aug 19, 2014
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A bump circuit with flexible tuning ability that uses 500 times less power and is smaller than previous circuits has been demonstrated by researchers at the University of Tennessee in the US.
Electronics & Semiconductors
Aug 19, 2014
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Maturing draw-tower fabrication technology for optical fibre gratings has been used to produce quasi-distributed temperature sensors that could extend the use of RFTA in cancer treatment.
Engineering
Aug 19, 2014
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A new, non-invasive technique to track the motion of knee bones in 3D with a very high precision has been presented by researchers in Australia. By employing a single-element ultrasound sensor and a fast image registration ...
Engineering
Aug 19, 2014
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A resonator element that can simultaneously act as both a filter and antenna has been developed as a step towards creating PROMFAs - the microwave circuit equivalent of an FPGA.
Electronics & Semiconductors
Aug 19, 2014
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An ultra-compact implantable image sensor using body channel communication has been demonstrated in Japan. The body channel approach allows the sensor-transmitter device to be much smaller and use less power than an RF wireless ...
Engineering
Aug 19, 2014
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An optical frequency comb that has record low laser relative intensity noise and in which the carrier envelope offset frequency has been stabilised to very low level, has been demonstrated by researchers at Centre Suisse ...
Engineering
Aug 18, 2014
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