In brief

Abstract

PAGE 1910 A paper presented by researchers from the University of Southern California, USA, and the Birla Institute of Technology and Science, India, shows a new pass-transistor-logic based programmable delay line circuit. Compared to the commonly used design, it consumes 79.2% less dynamic energy, 83.5% less leakage power, has 47.2% better linearity across codewords and 58.6% smaller active area, with similar resiliency to variations across Monte Carlo simulations. PAGE 1906 Researchers at Zurich Research Laboratory in Switzerland present a novel architecture for Taomlinson-Harashima precoders. In this design the modulo operation is taken out of the loop so that the remaining infinite impulse response filtering is performed entirely in carry-save adder arithmetic to reduce the feedback delay, as no conversion to binary format is required within the loop. This programmable delay line circuit has a more compact active area and uses less power than conventional designs. PAGE 1954 A non-stoichiometric GaAs layer is investigated with terahertz emission spectroscopy by a group of researchers at the Center for Physical Sciences and Technology and Teravil Ltd, in Lithuania. The results obtained revealed the existence of parallel to the surface THz radiating electric dipoles. They also showed that non-stoichiometric GaAs enhances THz radiation in comparison with one of the best THz surface emitters: p-InAs and semiconductor nanowires. There are proposals to use this technology in asymmetric and memory links. PAGE 1929 A 3D-printed, ceramic resin spherical resonator X-band dual-mode bandpass filter has been created by researchers in China and the UK. They believe this to be a first of its kind, with the stereolithography-produced ceramic resin structure providing excellent thermal stability, heat handling and mechanical strength with low weight. Non-stoichiometric GaAs has potential for bias-free THz surface emitters. PAGE 1912 Researchers from Konkuk University and Hanbat National University in Korea present a novel image descriptor for fingerprint liveness detection. They propose to accumulate multiple smoothing results by globally fast edge-aware filtering. Experimental results support the efficiency and robustness of the method compared with previous local image descriptors. The 3D-printable ceramic resin can handle heat much better than other resins but is still much lighter than metal alternatives. The proposed method can be directly applied to mobile devices to improve security for users.