US Space Station needs another redesign

Integrated LNA Serves Base Station Needs Whitepaper

As demand for wireless broadband grows, so does the importance of cellular base station (BTS) performance. The low noise amplifier (LNA) on the antenna tower is a key element in establishing BTS performance, affecting both the base station’s area of coverage and its tolerance of other nearby transmitters. Integrated LNAs with active bias regulators, such as Avago Technology’s MGA-63x family, pr...

Plane Strain Deformation of a Poroelastic Half-Space Lying Over Another Poroelastic Half-Space

The plane strain deformation of an isotropic, homogeneous, poroelastic medium caused by an inclined line-load is studied using the Biot linearized theory for fluid saturated porous materials. The analytical expressions for the displacements and stresses in the medium are obtained by applying suitable boundary conditions. The solutions are obtained analytically for the limiting case of undrained...

Space Station Alpha Joint Bearing

Perhaps the most critical structural system aboard the Space Station is the Solar Alpha Rotary Joint which helps align the power generation system with the sun (Figure 1). The joint must provide structural support and controlled rotation to the outboard transverse booms as well as power and data transfer across the joint. The Solar Alpha Rotary Joint is composed of two transition sections and a...

Space Shuttle Space Station Radio Frequency ( W ) Exposure Analysis

This paper outlines the modeling techniques and important parameters to define a rigorous but practical procedure that can verify the compliance of RF exposure to the NASA standards for astronauts and electronic equipment. The electromagnetic modeling techniques are applied to analyze RF exposure in Space Shuttle and Space Station environments with reasonable computing time and resources. The m...

International Space Station life science research funding.