main.m

程序计算了国产矩形波导BJ-100的传输特性。通过查阅资料可以知道BJ-100波导管的结构参数为频率范围（8.2GHz~12.5GHz）结构参数a=22.86mm,b=10.16mm FDTD计算

fp1=fopen('ntime')
fp2=fopen('ez1')
fp3=fopen('ez2')
fp4=fopen('ez3')
fp5=fopen('ez4')
fp6=fopen('ez5')
fp7=fopen('ez6')
x1=fscanf(fp1,'%f')
y1=fscanf(fp2,'%f')
y2=fscanf(fp3,'%f')
y3=fscanf(fp4,'%f')
y4=fscanf(fp5,'%f')
y5=fscanf(fp6,'%f')
y6=fscanf(fp7,'%f')
 
subplot(3,2,1)
plot(x1,y1,'k')
%axis([2,7,0,1])
grid on
subplot(3,2,2)
plot(x1,y2,'k')
grid on
subplot(3,2,3)
plot(x1,y3,'k')
grid on
subplot(3,2,4)
plot(x1,y4,'k')
grid on
subplot(3,2,5)
plot(x1,y5,'k')
grid on
subplot(3,2,6)
plot(x1,y6,'k')
grid on
fclose(fp1);
fclose(fp2);
fclose(fp3);
fclose(fp4);
fclose(fp5);
fclose(fp6);
fclose(fp7);