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Interview with János Ladvánszky
Dr János Ladvánszky from Ericsson Telecom Hungary talks about the research behind his Letter Does amplitude or phase noise arise first?.
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Vol 48, No 12, 07 June 2012
What's new?
Follow us on Twitter
Electronics Letters is now on Twitter! Follow @ElecLett for the latest news and highlights from each issue!
Open Access
Electronics Letters, along with all IET journals, now offers authors the option to publish their paper open access.
Past Issues
Past issues
See feature articles and interviews from recent issues of Electronics Letters.
To access the full content of all past issues please visit the IET Digital Library.
Special issue
Semiconductors in Personalised Medicine
A special supplement to Electronics Letters that reflects on the growth of semiconductors as the enabling technology to help with some of the global healthcare challenges that we face today.
Also in this issue
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Voltage emission
A vacuum lateral silicon diode has been fabricated by researchers in Malaysia. Using atomic force microscopy lithography to characterise field emission, the turn-on voltage of the diode is 8 V, the smallest value ever reported for lateral silicon field emission diodes.
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Curved distribution
Researchers in Japan have proposed a configuration for an ideal optical wavelength filter. A grating coupler and a pair of distributed Bragg reflectors with curved gratings were designed for a guided wave propagating with divergence owing to diffraction, and this design provides a filter with narrow band reflection spectrum for use in small diameter optical beams.
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Return to start
Hysteresis is a major problem in piezoelectric (PZ) actuators, which are widely used in micropositioning and actuation applications for their extremely small displacements, high stiffness and fast frequency response. Work from China reports a simple method to drive PZ actuators that greatly reduces their hysteresis, has a common ground and is capable of producing very high drive voltages.
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Better together
The first High-Tc superconducting (HTS) monolithic heterodyne Josephson downconverter is reported in work from Australia and China. HTS bandpass and lowpass filters are integrated with an HTS Josephson heterodyne mixer on a single chip to improve coupling efficiency between HTS components and reduce losses, circuit size and power consumption. The proposed converter could replace hybrid downconverters used in wireless communications base stations.
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Alternative sources
An X-band photonic bandgap multi-beam reflex klystron is presented by researchers in Korea as a potential terahertz source. The team developed a hybrid resonator using photonic crystal structure for stable output coupling and to exclude some lower order modes of the cavity. Carbon nanotubes were used in the creation of the cathode, which produces nine electron beams.
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