Method Of Moments For Radiation Characteristics Of Conformal Antenna Array

In this thesis,the method of moments(Mo M)combined with the volume,surface,wire integral equation are used to study the radiation characteristics and impedance characteristics of the antennas.The improved magnetic frill generator model and Delta Gap source model of antennas are also studied,and the key and difficult points in the research at this stage are analysed.This paper mainly studies the following aspects:Firstly,the improved magnetic frill generator is introduced.Dipole antenna and monopole antenna are fed with the improved magnetic frill generator and Delta Gap source model respectively.The input impedance changes of dipole antenna and monopole antenna are observed by changing the number of line splits or plane splits,and the accuracy of the improved magnetic frill generator model is verified.Secondly,this paper uses the method of moments combined with the volume-surface-wire integral equation(VSWIE)to accurately calculate the radiation characteristics of a finite-size dielectric substrate,a finite-size a grounded plate,and a coaxially-fed microstrip patch antenna and its array.The dielectric slab,conducting patch,ground plane,and the prope feed are replaced by equivalent volume current,surface current,wire current,and wire-surface junction singularity current respectively,with the four different basis functions of the volume,surface,wire and wire-surface junction.The linear equations are constructed by the method of moments.By solving the linear equations,the current values in each solution domain can be obtained,then the antenna radiation patterns can be easily calculated.