In the present work a design of wideband microstrip patch antennas have been investigated. These antennas were designed to operate in the Sband.Different techniques were followed in order to satisfy this
A computational investigation has been carried out in the field of charged-particle optics. The work is concerned with the design of einzel (uni potential) lens by using non-classical variation method under different magnification conditions.The potential field distribution of the einzel lens has been represented by an analytical function. The paraxial ray equation has been solved for finding the short beam trajectory of the charged particles traversing the lens.
In this work, a program of ray tracing program has been constructed. Thisprogram includes ray tracing for:
1. Skew ray tracing for spherical surfaces;
2. Skew ray tracing for Cartesian or quadric surfaces of revolution (conic surfaces).
