The digital video broadcasting-handheld (DVB-H) service is a new standard for delivering live broadcasting television to handheld terminals and it utilizes UHF bands IV and V (470-862 MHz). However, since the upper limit of the DVB-H frequency band is within a measurable distance of the lower limit of the GSM 900 frequency band, the upper limit will probably be restricted to channel 49 (698 MHz...

X-ray transition radiation can be used to measure the Lorentz factor of relativistic particles. Standard transition radiation detectors (TRDs) typically incorporate thin plastic foil, foam, or fiber radiators and gas-filled x-ray detectors, and are sensitive up to γ ∼ 10. To reach Lorentz factors up to γ ∼ 10, thicker, denser radiators can be used, which consequently produce x-rays of harder en...

Abstract In this study, we present a low-profile dual-spectrum split-ring monopole that operates at industrial, scientific and medical (ISM) (2.45 GHz) band ultrawideband (UWB) spectrum (3.1–10.6 GHz). We optimised the design for dual-band operations by using circular radiators. The coupling between both rings drives structure to achieve quasi-resonance frequencies in UWB spectrum. A s...

Piezoelectric nanobeams having circular, rectangular and hexagonal cross-sections are synthesized and used in various Nano structures; however, piezoelectric nanobeams with hexagonal cross-sections have not been studied in detail. In particular, the physical mechanisms of the surface effect and the role of surface stress, surface elasticity and surface piezoelectricity have not been discussed t...

In this letter, a new addressing scheme for hexagonal networks is proposed. Using the new addressing scheme, many routing algorithms designed for networks using square-based topologies such as mesh and torus can also be applied to hexagonal networks. Methods of applying the turn model to hexagonal networks are derived, with some new minimal and partial adaptive routing algorithms obtained. Simu...