Numerical Electromagnetic Code (NEC)

The development and the application of the Numerical Electromagnetic Code (NEC) - Method of Moments are described. NEC is based on a previous method of moments code for thin wires, the Antenna Modeling Program (AMP), and yields improved estimates of the performance of antennas mounted on shore stations, ships, aircraft, and spacecraft. The NEC can model antennas in free space, over a perfectly conducting ground plane, and over finite conduction (lossy) earth.