text1.f90

该程序算导体的远区辐射场!是用fortran语言编写,希望对大家有帮助!

	
	
	 call ess(m1,m2,m3,espx1,espx2,espy1,espy2)
		  call ess(m1,m2,m4,essx1,essx2,essy1,essy2)
		  esx1=esx1+x(j)*(espx1-essx1)
		  esx2=esx2+x(j)*(espx2-essx2)

		  esy1=esy1+x(j)*(espy1-essy1)
		  esy2=esy2+x(j)*(espy2-essy2)

	
	
	
	
	subroutine ess(point1,point2,point3,es11,es12,es21,es22)
    implicit none
	real(8):: point1(3),point2(3),point3(3)
!	real(8):: !angle
	complex(8):: es11,es12,es21,es22
    real  dot
	real(8),parameter::waveimped=120.0*3.1415926
	real(8),parameter::PI=3.141592653589793
	real(8):: kk
	common /boshu/kk

	real temp1,temp2,temp3 !Ax,Ay,Az  !临时变量：磁矢势x，y，z分量
	complex(8):: mer
!	real(8) es(3)	   !临时变量
	real rc(3)!temp1,temp2,temp3  !临时变量
	real rn(3)!tempx,tempy,tempz		!临时变量
	real rs(3) ,thets(3), phis(3)
    real thetas, phais, thesin, thecos, phaisin, phaicos 
	complex(8):: jj
	integer i
	jj=dcmplx(0.,1.)



 do i=1,3
	 rc(i)=(point1(i)+point2(i)+point3(i))/3.0
	 rn(i)=(point1(i)+point2(i)+point3(i))/3.0-point3(i)
 enddo

   
	    thesin=sin(thetas)
        thecos=cos(thetas)
        phaisin=sin(phais)
        phaicos=cos(phais)
        rs(1)=thesin*phaicos
        rs(2)=thesin*phaisin
        rs(3)=thecos
     	 thets(1)=thecos*phaicos
	     thets(2)=thecos*phaisin
    	 thets(3)=-thesin
	     phis(1)=-phaisin
	     phis(2)= phaicos
	     phis(3)= 0.0

		 

!先计算xz平面的远区散射
	    phais=0
	  do i=0,180
	   thetas=float(i)*2*pi/360
		
	   temp1=dot(rs,rc)
       mer=0.5*jj*exp(i*kk*temp1)
	   temp2=dot(thets,rn)
	   temp3=dot(phis,rn)
	   es11=mer*temp2
	   es12=mer*temp3
	  enddo
!再计算yz平面的远区散射
	    phais=90
	  do i=0,180
		thetas=float(i)*2*pi/360
	
		temp1=dot(rs,rc)
        mer=0.5*jj*exp(i*kk*temp1)
	   	temp2=dot(thets,rn)
	    temp3=dot(phis,rn)
	    es21=mer*temp2
	    es22=mer*temp3

	  enddo
end
function dot(x,y)
    implicit none
    real dot,y(3),x(3)
    dot=x(1)*y(1)+x(2)*y(2)+x(3)*y(3)
    return
    end