The near-field zone of dipole and loop antennas

The field of different variants of dipole and loop antennas is studied. The amplitude and phase of the antennas wire current in near-field zone are calculated by numerical method using integral equation. The main regularity in distributions of amplitude and phase in near-field zone and transmission coefficient between two antennas in three-element antenna array are analyzed.

Some Numerical methods for Solving Fredholm and Volterra integral equations of the second kind

In this research, we have studied the concepts of Integral Equations which solution his it is importance in many scientific applications. They have been classified according them to the nucleus type that this solution depends upon it. Also the relationship between these equations and the differential equations has been discussed, including the applying of some analytical methods to find the correct solution. The analytical methods have proved the existence and uniqueness of the solution. The application of numerical methods for finding the approximate solution with using the MATLAB software and error analysis were conducted, where the approximate results showed the accuracy and closeness to the analytical results.