<正>To obtain frequency-temperature compensation in a sapphire loaded cavity for hydrogen maser,a dielectric named SrTiO_3 is employed whose temperature coeffic
A novel multi-layer planar antenna array to achieve multi-polarized radiation is developed. U-shaped coupling slots are embedded in the ground plane to extend t
A new procedure for a design of multi-range controllers for use with highly nonlinear systems is developed.The procedure involves obtaining the describing funct