An attenuator supporting meander-line (ASML) slow wave structure (SWS) is proposed for a Ka-band traveling tube (TWT) and studied by simulations experiments. The ASML SWS simplifies the fabrication assembly process of traditional planar metal meander-lines (MLs) structures, employing an to support ML on bottom enclosure rather than welding them together sides. To reduce surface roughness molybd...

A new broadband multiple-input multiple-output (MIMO) antenna with good isolation and compact size is proposed. The proposed antenna consists of two G-shaped elements in the upper layer and two inverted L protrude branches and a T slot etched in ground which is used to reduce the mutual coupling. This planar antenna has a bandwidth of 100% with |S11| ≤ -10 dB from 2.26GHz to 6.78 GHz. The value...

In the present paper a geospatial analysis is performed to understand the meandering behaviour of Barak River in southern Assam between 1988 and 2010. Landsat images (with Thematic mapper and Enhanced thematic mapper-plus sensors) for years 1988, 1999, and 2010 are considered for the study. River Barak within the study area is digitized as polygons for three years and sinuosity index (SI) are c...