The comparative study of vector wave equation solutions based on dyadic Green’s function

Abstract Based on the dyadic Green’s function, this paper analyzes four Green function methods for solving vector wave equations, obtains the relations of electromagnetic field quantities expressed by dyadic Green’s function, and compares several methods. It is found that the expression of the third method is the same as that of the second method. If <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mover> <mml:mrow> <mml:mi>G</mml:mi> </mml:mrow> <mml:mo stretchy="false">=</mml:mo> </mml:mover> <mml:mi>m</mml:mi> </mml:msub> <mml:mo>=</mml:mo> <mml:msub> <mml:mover> <mml:mrow> <mml:mi>G</mml:mi> </mml:mrow> <mml:mo stretchy="false">=</mml:mo> </mml:mover> <mml:mrow> <mml:mi>m</mml:mi> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:math> is chosen for the fourth method, the expression of the solution is the same as that of the first method.