In brief

Abstract

PAGE 18 Researchers in Korea have proposed a method to significantly reduce the computation complexity of a phase rotation beamforming technique commonly used in medical ultrasound scanners. They demonstrate that it can be implemented on smartphone hardware and that the technique doesn't sacrifice image quality, either analytically or experimentally. PAGE 29 Optical cloaking of arbitrary cross-section cylindrical structures using scattering cancellation is presented in work from Iran. The approach uses nano-strips of silver in a dielectric host as a cloaking shell around the object and the work explores the effect of the nano-strip parameters on the cloaking efficiency. The computational complexity of the technique is improved sufficiently to run in realtime on a smartphone without compromising quality PAGE 51 A compact Ka-band full bandwidth 3-dB waveguide hybrid has been designed by researchers in China. With high directivity over the full bandwidth of the WR-28 standard waveguide. The hybrid can also be used as a two-way power divider and can be made with excellent repeatability at low-cost. Optical cloaking of cylindrical objects of arbitrary cross-section PAGE 12 Researchers in China present a surface diagnosis approach for large reflector radio astronomy antennas with active surface control systems. Based on microwave holographic techniques, it allows far field patterns to be measured in focus by actively adjusting the primary surface. The 3-dB waveguide hybrid can be fabricated at low-cost with excellent repeatability PAGE 36 A robust, portable stereoscopic system for rapid identification of hidden objects using only a small number of X-ray projections has been demonstrated in work from the US. The system uses a single fixed sensor and obtains different angles using a motion-controlled single X-ray source. With a known system geometry, a series of depth planes can be computed to allow rapid object identification and realtime operation. The approach applies techniques from microwave holography to large reflector radio astronomy antennas The single source, single sensor, portable X-ray system allows rapid identification of hidden objects