Follow the links to read the full papers in the IET Digital Library.
Anti-Stokes signals at the near-ultraviolet wavelength have been efficiently generated by researchers in China. These signals constitute important progress in the development of a simple and compact, near-ultraviolet, ultra short pulse source, which will find important applications in basic physics and applied science.
Low and wide
Researchers in Spain have presented a quasi-digital temperature sensor implemented in CMOS technology. Using advanced design techniques, their sensor features highly linear response, a wide temperature range (−40 to +120 ºC), low-voltage compliance with micropower consumption and low sensitivity to supply voltage variations.
Post a priori
Researchers in Australia have developed a distortion compensation technique for an amplifier, which exploits both the operational signal and the intrinsic noise within the device. The technique works by operating without knowledge of the input to the system, either directly or indirectly, and so is a promising basis for a future adaptive post-distortion device that operates down to DC.
Freeing the screen
A rear-facing mobile camera-based finger motion command recognition system has been designed and implemented by researchers in Korea. Using the rear camera as the motion tracker and to issue commands means that the user has more freedom with peripheral devices and screen-based interaction.
Pass the remote
Researchers in China have proposed a single-branch 3rd-order all-pole lowpass filter with a continuous and wide-scalable bandwidth, controllable by the bias current, thus avoiding any tuning capacitors. The design can be used for multi-standard wireless transceivers to realise flexible band selection (VHF and UHF bands in TV tuners), or channel selection from kHz to GHz ranges.