Calculation of Scattering Field from Thin-Wire Antennas Using Method of Moments with Pulse Basis Functions

This project implements the Method of Moments (MoM) to calculate the scattering field from thin-wire antennas using pulse basis functions. The computational approach involves discretizing the antenna structure into segments and applying point matching techniques to solve electromagnetic integral equations.

In electromagnetic theory, the Method of Moments serves as a fundamental numerical technique for computing electromagnetic field distributions. Thin-wire antennas represent a crucial antenna category widely employed in communication systems and radar applications. By implementing pulse basis functions in the MoM framework, we achieve enhanced accuracy in scattering field calculations through segment-wise constant current approximation. The algorithm typically involves: - Discretizing the wire into N segments - Applying pulse basis functions for current expansion - Using point matching (Dirac delta testing functions) - Formulating and solving a Z-matrix equation: [Z][I] = [V]

Pulse basis functions serve as mathematical tools for modeling electromagnetic wave propagation and scattering behavior. By inputting the geometric configuration and electrical parameters of thin-wire antennas into the MoM computational model, we utilize pulse basis functions to simulate and analyze scattering field distributions. The implementation typically includes: - Wire geometry parameterization (length, radius, segmentation) - Free-space Green's function computation - Matrix filling with impedance elements Zmn - Linear system solution for current coefficients This approach enables comprehensive understanding of thin-wire antenna electromagnetic behavior under various environmental conditions, facilitating antenna design optimization and system performance enhancement.

In summary, through the integration of Method of Moments with pulse basis functions, we achieve detailed scattering field calculations for thin-wire antennas. The numerical implementation provides comprehensive analysis results, offering valuable insights for electromagnetic research and communication system development. Key computational advantages include straightforward implementation, clear physical interpretation, and reliable accuracy for linear antenna structures.