Usingthe Integral Equation Method To Accurately Simulate The Carriar Antenna Radiation Problem

The problem of the radiation characteristics of the antenna on the carrier platform,especially, the problem of the carrier platform and antenna integration the geometricmodeling electromagnetic numerical simulation, has been one of the difficult issues ofconcern. In response to these problems, the method of moments is used to accuratelysimulate the carrier monopole antenna radiation, and the radiation characteristics ofrectangular waveguide structure analysis and metal media type of hybrid structures,such as microstrip antenna radiation electromagnetic modeling and numericalsimulation. In this paper, the surface integral equation is based on the method ofmoments and surface-surface combined integral equations, which is used toanalytically pure metal surface structure and metal-medium mixing structure of theantenna radiation.First, the article describes the basic principles and key steps of the method ofmoments. It is description the ideal conductor goal surface scattering problem solvingprocess based on the integral equation method of moments, which is used the planetriangular RWG basis functions to simulate target geometry and surface currentdistribution, and the Galerkin method to the integral equation defuse matrix equationsolving the unknown current coefficient. And it is applying the way of singular valueextracted to deal with the nearly singular problems in the integral equation. At last,numerical results are presented to show the reliability and accuracy of the code.Secondly, it is using the traditional Delta-gap source and Finite-width Fed twomethods to analyze the radiation problem of the dipole antenna, and using themodified delta-gap source that Advanced-Delta-gap source to analyze the monopoleantenna radiation problem simple vector excitation source modeling. At first, theobtained Advanced-Delta-gap source excitation model is used to calculate simple carrierantenna radiation problem, and to compare the result with the simulation softwaresuch as HFSS and FEKO, results are consistently well, indicating the validity of thismethod. Since the method equivalent antenna carrier surface structural model has less unknown quantity, so adding fast algorithm for the analysis of large-scale ship-based orairborne on a monopole antenna model is very useful. In addition, based on the idealconductor surface integral equation method of moments, it is to analysis of thewaveguide fed in the form of modeling methods and to calculate its radiationcharacteristics.Finally, it is derived a media target surface integral equation (PMCHW), with EFIEequation combined analysis of metal-medium body combination of targetelectromagnetic scattering problems the EFIE-PMCHW surface integral equation.Further promoting the EEIF-PMCHW equation microstrip antenna dielectric substrateand its analysis with a metal patch combination of electromagnetic radiation problemsolving them, based on this method, specific analysis of the antenna radiation problemin the form of microstrip antenna excitation source modeling achieve the analysisaccurate calculation of a microstrip antenna in the form of electromagnetic radiationproblems.