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+//Page Number: 294

+//Example 5.7

+clc;

+//Given

+f=3D+9; //hz

+l=4; //cm

+l1=4/100; //m

+d=0.1; //cm

+d1=d/100; //m

+V=900; //V

+i0=30D-3; //A

+rsh=25D+3;//ohm

+x=1.841;

+j1x=0.582;

+

+//(i) Input voltage for maximum output

+v0=0.593D+6*sqrt(V);

+w=2*%pi*f;

+theta0=w*l1/v0; //rad

+thetag=w*d1/v0; //rad

+bet=sin(thetag/2)/(thetag/2);

+v1max=2*V*x/(bet*theta0); //v

+disp('V',v1max,'Input voltage for maximum output:');

+

+//(ii) Voltage gain

+r0=V/i0;//ohm

+av=((bet^2)*theta0*j1x*rsh)/(x*r0);//V

+disp('V',av,'Voltage gain:');

+

+//(iii) Efficiency

+ic=2*i0*j1x; //A

+v2=bet*ic*rsh; //V

+eet=bet*ic*v2/(2*i0*V);

+disp('%',eet*100,'Efficiency:');

+

+//(iv) Beam loading conductance

+gb=(i0/(V*2))*(bet^2-(bet*cos(thetag/2)));//ohm

+disp('ohm',gb,'Beam loading conductance:');