Minimization of end-fire radar echo of a long thin body by impedance loading

A theory on the minimization of the end-fire radar echo of a long, thin body by an impedance loading technique is presented. When a long, thin body is illuminated by a plane wave in the region of longitudinal incidence, a large backscatter is observed. This backscatter is due to the induced traveling wave which is reflected from the rear end of the body. By an appropriate impedance loading, this backscatter can be minimized. In this paper, the induced current on a long, thin and loaded cylinder is studied. The optimum impedance loading which minimizes the end-fire radar echo is explicitly obtained. Theoretical results are compared with the experimental data and an excellent agreement is obtained.