Promising configurations for dual spectral filters based upon grating-waveguide structures are presented. In these configurations, the parameters of the multimode waveguide and grating are carefully chosen to achieve dual resonances at two different pre-determined wavelengths. Specifically, the grating-waveguide structure resonates for each pre-selected wavelength with a different waveguide mod...

A method to significantly increase the gain and isolation of a wideband multiple-input multiple-output (MIMO) antenna using metamaterial structures is reported. The proposed medium includes just one wall superstrate, which are fixed in xz xy planes MIMO antenna, respectively. dimensions 13×13×3.5 mm3 at 30 GHz. comparison between simulated conventional microstrip demonstrates good performance e...

Modern multimedia applications demand higher data rates and the trend towards wireless is evident, not only in telephony but also in home and office networking and customer electronics. This has been recently proven by the accelerating sales of IEEE 802.11 family WLAN hardware. Current WLANs are, however, capable of delivering only 30-100 Mb/s connection speeds, which is insufficient for future...

Thin-film-based photovoltaics offer affordable solar panels (high energy output per unit cost). Various materials have been used for thin-film cells, and still, new are being tested. In this work, the overall performance of GeSe is enhanced theoretically from a generic structure to configuration that yields whopping 33.12% efficiency along with an open circuit voltage 1.04 V by optimizing vario...