MathWorks. MatLAB R2021a Antenna Toolbox User’s Guide

The MathWorks, Inc., 2021. — 912 p.The port of an antenna is the physical location where the RF source is connected. From a network theory perspective, the antenna has a single port. In Antenna Toolbox, a red dot on the antenna figure represents the feed point. A half-wavelength dipole is shown with its feed point.
The flow of charges on the antenna surface determines the surface currents of the antenna. For antennas to radiate, there must be acceleration or deceleration of charges. The deceleration of charges is caused due to buildup of charges at the end of the wire, which leads to impedance discontinuities. This mechanism creates electromagnetic radiation. The accumulation of charges varies according to time and structure of the antenna.Antenna Concepts
Array Concepts
Computational Techniques
RF Propagation
Antenna Toolbox Examples