PULSED EM RADIATION FROM A STRAIGHT WIRE ANTENNA

This chapter provides formulas expressing the radiated electromagnetic (EM) fields from a straight wire segment in terms of the on‐axis electric‐current distribution. The ensuing analysis relies heavily on the source‐type representations for EM fields radiated from EM sources of bounded extent in an unbounded homogeneous, isotropic medium that are adapted to a straight, thin‐wire radiator. Their straightforward numerical handling via the trapezoidal rule is proposed. The general source‐type representations for the electric‐field strength can be expressed as a sum of the near‐field, intermediate‐field, and far‐field terms. In numerical calculations, the chapter considers the piecewise linear distribution of the induced electric‐current distribution as assumed in the chosen solution methodology and applies the trapezoidal rule approximation to the spatial integrations. It also expresses the amplitude electric‐field radiation characteristics.