If the small antenna is the only part of the problem that is to be moved, the computational description of the large structure can be saved in a file and used in the subsequent calculations as the small antenna is moved. Symmetry is useful for the modeling of structures that are symmetrical about the z-axis. Symmetry is also efficient for the modeling of structures that have one nonsymmetrical cell on the z-axis. The remainder of the antenna structure must be described as symmetrical cells about the z-axis. An example of this type of antenna is a top-loaded monopole.
Transformations move existing wires by rotation and translation.
Copies of wires can be generated. Planar antenna phased array A transmit and receive planar phased array can be defined from a given antenna element defined in the Geometry definition and a source node defined in the Electrical definition. The amplitude and phased distributions for a transmit or the loads for a previously defined planar antenna phased array can be modified. The voltages at the bases of the towers in a broadcast array can be related to the field ratios and phases that result from the FCC AM directional antenna design procedure. FCC ground wave.