diff options
Diffstat (limited to '3281/CH2')
50 files changed, 643 insertions, 0 deletions
diff --git a/3281/CH2/EX2.1/ex2_1.jpg b/3281/CH2/EX2.1/ex2_1.jpg Binary files differnew file mode 100755 index 000000000..89578bacf --- /dev/null +++ b/3281/CH2/EX2.1/ex2_1.jpg diff --git a/3281/CH2/EX2.1/ex2_1.sce b/3281/CH2/EX2.1/ex2_1.sce new file mode 100755 index 000000000..984e80395 --- /dev/null +++ b/3281/CH2/EX2.1/ex2_1.sce @@ -0,0 +1,17 @@ +//Page Number:91
+//Example 2.1
+clc;
+//Given,
+
+a=6;//cm
+b=4;//cm
+d=4.47;//cm
+c=3D+8; //m/s
+lamc=2*a;
+lamg=2*d;
+
+//Signal wavelength
+lam=lamg*lamc/(sqrt(lamg^2+lamc^2));
+lam=lam/100; //m
+f=c/lam;
+disp('Ghz',f/1D+9,'Signal frequency of dominant mode:');
diff --git a/3281/CH2/EX2.10/ex2_10.jpg b/3281/CH2/EX2.10/ex2_10.jpg Binary files differnew file mode 100755 index 000000000..b94883655 --- /dev/null +++ b/3281/CH2/EX2.10/ex2_10.jpg diff --git a/3281/CH2/EX2.10/ex2_10.sce b/3281/CH2/EX2.10/ex2_10.sce new file mode 100755 index 000000000..29a1bd74d --- /dev/null +++ b/3281/CH2/EX2.10/ex2_10.sce @@ -0,0 +1,29 @@ +//Page Number:
+//Example 2.10
+clc;
+//Given,
+
+c=3D+8; //m/s
+a=3; //cm
+a1=a/100; //m
+b=2; //cm
+b1=b/100; //m
+f=7.5D+9; //HZ
+p=5D+3; //W
+
+mu=%pi*4D-7;
+w=2*%pi*f;
+bet=sqrt(((w/c)^2)-((%pi/a1)^2));
+//Charecteristic impedance
+z0=w*mu*2*b/(bet*a);
+disp('ohm',z0,'Charecteristic impedance:');
+
+//Peak electric field
+e0=4*w*mu*p/(bet*a*b);
+disp('V/m',e0,'Peak electric field:');
+
+//Maximum voltage
+v0=e0*b1;
+disp('kV',v0/1000,'Maximum voltage:');
+
+//Answer for v0 is given as 3.172 kV it should be 33.71 kV
diff --git a/3281/CH2/EX2.14/ex2_14.jpg b/3281/CH2/EX2.14/ex2_14.jpg Binary files differnew file mode 100755 index 000000000..9e32a2003 --- /dev/null +++ b/3281/CH2/EX2.14/ex2_14.jpg diff --git a/3281/CH2/EX2.14/ex2_14.sce b/3281/CH2/EX2.14/ex2_14.sce new file mode 100755 index 000000000..761d88449 --- /dev/null +++ b/3281/CH2/EX2.14/ex2_14.sce @@ -0,0 +1,36 @@ +//Page Number: 99
+//Example 2.14
+clc;
+//Given,
+c=3D+8; //m/s
+a=1.5;//cm
+a1=a/100;//m
+b=0.8;//cm
+b1=b/100;//m
+mu=1/c*c;
+e=4;
+w=%pi*1D+11;
+n=377;
+
+//(i) Frequency of operation
+f=w/(2*%pi);
+f1=f/1D+9;//ghz
+disp('Ghz',f1,'Frequency of operation:');
+
+//(ii) Cutt off frequency
+fc=(c*sqrt((1/a1)^2+(3/b1)^2))/(2*sqrt(e));
+fc1=fc/1D+9;//ghz
+disp('Ghz',fc1,'Cut off frequency:');
+
+//(iii) Phase constant
+bet=(w*sqrt(e)*sqrt(1-(fc/f)^2))/(c);
+disp('rad/m',bet,'Phase constant:');
+
+//(iv) Propogation constant
+gam=%i*bet;
+disp('rad/s',gam,'Propogation constant:');
+
+//(v) Intrensic wave impedance
+zte=(n/sqrt(e))/sqrt(1-(fc/f)^2);
+ztm=(n/sqrt(e))*sqrt(1-(fc/f)^2);
+disp('Ohm',ztm,'ZTM13','Ohm',zte,'ZTE13','Intrinsic wave impedance:');
diff --git a/3281/CH2/EX2.17/ex2_17.jpg b/3281/CH2/EX2.17/ex2_17.jpg Binary files differnew file mode 100755 index 000000000..18a57f6a9 --- /dev/null +++ b/3281/CH2/EX2.17/ex2_17.jpg diff --git a/3281/CH2/EX2.17/ex2_17.sce b/3281/CH2/EX2.17/ex2_17.sce new file mode 100755 index 000000000..7727189d8 --- /dev/null +++ b/3281/CH2/EX2.17/ex2_17.sce @@ -0,0 +1,24 @@ +//Page Number: 103
+//Example 2.17
+clc;
+//Given
+a=2; //cm
+a1=1/100; //m
+b=1; //cm
+b1=b/100; //m
+p=10D-3; //W
+c=3D+8; //m/s
+f0=10D+9; //Hz
+
+//Peak value of electric field
+fc=c/(2*a);
+E02=(4*p*377)/(a1*b1*sqrt(1-(fc/f0)^2));
+E0=sqrt(E02);
+disp('V/m',E0,'Peak value of electric field:');
+
+//Maximum power transmitted
+Ed=3D+6; //V/m
+Pt=2.6D+13*(Ed/f0)^2;
+disp('kW',Pt/1000,'Maximum power transmitted:');
+
+//Answer is given as 2300kW but it is 2340kW
diff --git a/3281/CH2/EX2.18/ex2_18.jpg b/3281/CH2/EX2.18/ex2_18.jpg Binary files differnew file mode 100755 index 000000000..d42c6d767 --- /dev/null +++ b/3281/CH2/EX2.18/ex2_18.jpg diff --git a/3281/CH2/EX2.18/ex2_18.sce b/3281/CH2/EX2.18/ex2_18.sce new file mode 100755 index 000000000..456bd3c3e --- /dev/null +++ b/3281/CH2/EX2.18/ex2_18.sce @@ -0,0 +1,43 @@ +//Page Number: 104
+//Example 2.18
+clc;
+//Given
+f=5D+9; //Hz
+c=3D+8; //m/s
+a=7.5; //cm
+a1=a/100; //m
+b=3.5; //cm
+b1=b/100; //m
+lam=c/f;
+lamm=lam*100; //m
+
+disp('TE10 mode');
+lamc10=2*a;
+bet10=(2*%pi*sqrt(((lamc10/lamm)^2)-1))/lamc10;
+disp('rad/cm',bet10,'Propogation constant:');
+vp10=(2*%pi*f)/bet10;
+disp('m/s',vp10/100,'Phase velocity:');
+
+disp('TE01 mode');
+lamc01=2*b;
+bet01=(2*%pi*sqrt(((lamc01/lamm)^2)-1))/lamc01;
+disp('rad/cm',bet01,'Propogation constant:');
+vp01=(2*%pi*f)/bet01;
+disp('m/s',vp01/100,'Phase velocity:');
+
+disp('TE11 mode');
+lamc11=(2*a*b)/sqrt((a*a)+(b*b));
+bet11=(2*%pi*sqrt(((lamc11/lamm)^2)-1))/lamc11;
+disp('rad/cm',bet11,'Propogation constant:');
+vp11=(2*%pi*f)/bet11;
+disp('m/s',vp11/100,'Phase velocity:');
+
+disp('TE02 mode');
+lamc02=b;
+bet02=(2*%pi*sqrt(((lamc02/lamm)^2)-1))/lamc02;
+disp('rad/cm',bet02,'Propogation constant:');
+disp('As beta is imaginary, mode gets attenuated');
+alp=(2*%pi*sqrt(1-((lamc02/lamm)^2)))/lamc02;
+disp('Np/m',alp,'Propogation constant alpha:');
+
+
diff --git a/3281/CH2/EX2.19/ex2_19.jpg b/3281/CH2/EX2.19/ex2_19.jpg Binary files differnew file mode 100644 index 000000000..bf823b7c3 --- /dev/null +++ b/3281/CH2/EX2.19/ex2_19.jpg diff --git a/3281/CH2/EX2.19/ex2_19.sce b/3281/CH2/EX2.19/ex2_19.sce new file mode 100644 index 000000000..a1ae2a018 --- /dev/null +++ b/3281/CH2/EX2.19/ex2_19.sce @@ -0,0 +1,22 @@ +//Page Number: 105
+//Example 2.19
+clc;
+//Given
+c=3D+8; //m/s
+a=2.29; //cm
+b=1.02; //cm
+a1=a/100 ;//m
+b1=b/100; //m
+f=6D+9; //Hz
+e=1;
+mu=1/(c^2);
+
+//Cut off frequency
+lamc=2*a1;
+fc=c/lamc;
+w=2*%pi*fc;
+
+//Attenuation constant
+a=(w*sqrt(1-((f/fc)^2)))/c;;
+adb=-20*log10(exp(-a));
+disp('dB/m',adb,'Attenuation constant:');
diff --git a/3281/CH2/EX2.2/ex2_2.jpg b/3281/CH2/EX2.2/ex2_2.jpg Binary files differnew file mode 100755 index 000000000..45db5f86c --- /dev/null +++ b/3281/CH2/EX2.2/ex2_2.jpg diff --git a/3281/CH2/EX2.2/ex2_2.sce b/3281/CH2/EX2.2/ex2_2.sce new file mode 100755 index 000000000..50dcd68c3 --- /dev/null +++ b/3281/CH2/EX2.2/ex2_2.sce @@ -0,0 +1,24 @@ +//Page Number: 92
+//Example 2.2
+clc;
+//Given,
+c=3D+8; //m/s
+a=2.5; //cm
+b=5; //cm
+lam=4.5; //cm
+
+lamc=2*b;
+
+//Guide wavelength
+lamg=lam/(sqrt(1-((lam/lamc)^2)));
+disp('cm',lamg,'Guide wavelength:');
+
+//Phase constant
+bet=(2*%pi)/lamg;
+bet=bet*100; //rad/m
+disp('rad/m',bet,'Phase constant:');
+
+//Phase velocity
+w=(2*%pi*c)/lam;
+vp=w/bet;
+disp('m/s',vp,'Phase velocity:');
diff --git a/3281/CH2/EX2.20/ex2_20.jpg b/3281/CH2/EX2.20/ex2_20.jpg Binary files differnew file mode 100755 index 000000000..bed913c03 --- /dev/null +++ b/3281/CH2/EX2.20/ex2_20.jpg diff --git a/3281/CH2/EX2.20/ex2_20.sce b/3281/CH2/EX2.20/ex2_20.sce new file mode 100755 index 000000000..046b9b875 --- /dev/null +++ b/3281/CH2/EX2.20/ex2_20.sce @@ -0,0 +1,9 @@ +//Page Number: 105
+//Example 2.20
+clc;
+//Given,
+a1=1.84;
+a2=%pi;
+
+r=2*%pi*(a1/a2)^2;
+disp(r,'Cross section ratio:');
diff --git a/3281/CH2/EX2.21/ex2_21.jpg b/3281/CH2/EX2.21/ex2_21.jpg Binary files differnew file mode 100644 index 000000000..a1b98f2f0 --- /dev/null +++ b/3281/CH2/EX2.21/ex2_21.jpg diff --git a/3281/CH2/EX2.21/ex2_21.sce b/3281/CH2/EX2.21/ex2_21.sce new file mode 100644 index 000000000..c1bcd92e2 --- /dev/null +++ b/3281/CH2/EX2.21/ex2_21.sce @@ -0,0 +1,35 @@ +//Page Number: 106
+//Example 2.21
+clc;
+//Given
+c=3D+8; //m/s
+f=15D+9; //hz
+a=1.07; //cm
+a1=a/100; //m
+b=0.43; //cm
+b1=b/100; //m
+er=2.08;
+tandel=0.0004;
+lam=c/f;
+
+
+//(i) Cut off frequency
+m1=1;
+n1=0;
+fc10=(c/(2*%pi*sqrt(er))*sqrt((m1*%pi/a1)^2+(n1*%pi/b1)^2));
+disp('GHz',fc10/10^9,'Cut off frequency for mode TE10:');
+
+m2=2;
+n2=0;
+fc20=(c/(2*%pi*sqrt(er))*sqrt((m2*%pi/a1)^2+(n2*%pi/b1)^2));
+disp('Ghz',fc20/10^9,'Cut off frequency at mode TE20:');
+
+m3=0;
+n3=1;
+fc01=(c/(2*%pi*sqrt(er))*sqrt((m3*%pi/a1)^2+(n3*%pi/b1)^2));
+disp('Ghz',fc01/10^9,'Cut off frequency at mode TE01:');
+
+//Dielectric attenuation constant
+ad=(%pi*tandel)/(lam*sqrt(1-(fc10/f)^2));
+adb=-20*log10(exp(-ad));
+disp('dB/m',adb,'Attenuation constant:');
diff --git a/3281/CH2/EX2.22/ex2_22.jpg b/3281/CH2/EX2.22/ex2_22.jpg Binary files differnew file mode 100755 index 000000000..4df23b78f --- /dev/null +++ b/3281/CH2/EX2.22/ex2_22.jpg diff --git a/3281/CH2/EX2.22/ex2_22.sce b/3281/CH2/EX2.22/ex2_22.sce new file mode 100755 index 000000000..0b17b6d11 --- /dev/null +++ b/3281/CH2/EX2.22/ex2_22.sce @@ -0,0 +1,24 @@ +//Page Number: 106
+//Example 2.22
+clc;
+//Given
+c=3D+8; //m/s
+a=2.286; //cm
+a1=a/100; //m
+b=1.016; //cm
+b1=b/100; //m
+sig=5.8D+7; //s/m
+f=9.6D+9; //Hz
+
+w=2*%pi*f;
+mu=%pi*4D-7;
+et=377;
+
+lam=c/f;
+lamc=2*a1;
+r=lam/lamc;
+
+Rs=sqrt((w*mu)/(2*sig));
+ac=(Rs*(1+(2*(b1/a1)*r*r)))/(et*b1*sqrt(1-(r^2)));
+adb=-20*log10(exp(-ac));
+disp('dB/m',adb,'Conductor attenuation constant:');
diff --git a/3281/CH2/EX2.23/ex2_23.jpg b/3281/CH2/EX2.23/ex2_23.jpg Binary files differnew file mode 100755 index 000000000..0aa9a3307 --- /dev/null +++ b/3281/CH2/EX2.23/ex2_23.jpg diff --git a/3281/CH2/EX2.23/ex2_23.sce b/3281/CH2/EX2.23/ex2_23.sce new file mode 100755 index 000000000..27c8a019c --- /dev/null +++ b/3281/CH2/EX2.23/ex2_23.sce @@ -0,0 +1,16 @@ +//Page Number: 107
+//Example 2.23
+clc;
+//Given
+c=3D+8; //m/s
+f=9D+9; //hz
+a=5; //cm
+a1=a/100; //m
+e=1;
+mu=1/(c*c);
+p11=1.841;
+
+fc=(p11*c)/(2*%pi*a1);
+//Maximum power transmitted
+pmax=1790*(a1*a1)*sqrt(1-((fc/f)^2));
+disp('kW',pmax,'Maximum power transmitted:');
diff --git a/3281/CH2/EX2.24/ex2_24.jpg b/3281/CH2/EX2.24/ex2_24.jpg Binary files differnew file mode 100755 index 000000000..b96df9678 --- /dev/null +++ b/3281/CH2/EX2.24/ex2_24.jpg diff --git a/3281/CH2/EX2.24/ex2_24.sce b/3281/CH2/EX2.24/ex2_24.sce new file mode 100755 index 000000000..6e8861cdd --- /dev/null +++ b/3281/CH2/EX2.24/ex2_24.sce @@ -0,0 +1,25 @@ +//Page Number: 108
+//Example 2.26
+clc;
+//Given
+c=3D+8; //m/s
+a=5; //cm
+a1=a/100; //m
+f=3D+9; //hz
+p11=1.841;
+e=1;
+w=2*%pi*f;
+
+//(i) Cut off frequency
+fc=(p11*c)/(2*%pi*a1);
+disp('Ghz',fc/10^9,'Cut off frequency:');
+
+//(ii) Guide wavelength
+bet=sqrt(((w*w)/(c*c))-((p11/a1)^2));
+lamg=(2*%pi)/bet;
+lamg1=lamg*100; //cm
+disp('cm',lamg1,'Guide wavelength:');
+
+//(iii) Wave impedance
+zte=(w*%pi*4D-7)/bet;
+disp('ohm',round(zte),'Wave impedance:');
diff --git a/3281/CH2/EX2.25/ex2_25.jpg b/3281/CH2/EX2.25/ex2_25.jpg Binary files differnew file mode 100755 index 000000000..356c153f0 --- /dev/null +++ b/3281/CH2/EX2.25/ex2_25.jpg diff --git a/3281/CH2/EX2.25/ex2_25.sce b/3281/CH2/EX2.25/ex2_25.sce new file mode 100755 index 000000000..0b27b3556 --- /dev/null +++ b/3281/CH2/EX2.25/ex2_25.sce @@ -0,0 +1,13 @@ +//Page Number:108
+//Example 2.25
+clc;
+//Given
+c=3D+8; //m/s
+p01=2.405;
+a=1/100;; //cm
+p11=1.841;
+
+fc01=((c*p01)/(2*%pi*a));
+fc11=((c*p11)/(2*%pi*a));
+bw=fc01-fc11;
+disp('Ghz',bw/10^9,'Bandwidth:');
diff --git a/3281/CH2/EX2.26/ex2_26.jpg b/3281/CH2/EX2.26/ex2_26.jpg Binary files differnew file mode 100755 index 000000000..d69cbf8a1 --- /dev/null +++ b/3281/CH2/EX2.26/ex2_26.jpg diff --git a/3281/CH2/EX2.26/ex2_26.sce b/3281/CH2/EX2.26/ex2_26.sce new file mode 100755 index 000000000..e80e76c76 --- /dev/null +++ b/3281/CH2/EX2.26/ex2_26.sce @@ -0,0 +1,36 @@ +//Page Number: 109
+//Example 2.26
+clc;
+//Given
+c=3D+8; //m/s
+a=2.286; //cm
+f=5D+9; //Hz
+er=2.25;
+tandel=1D-3;
+w=2*%pi*f;
+mu=4D-7;
+sig=5.8D+7; //s/m
+
+lamc=2*a;
+lamm=c/f;//m
+lam=lamm*100;//cm
+
+ermax=(lam/a)^2;
+disp(ermax,'Maximum value of dielectric constant:');
+ermin=(lam/(2*a))^2;
+disp(ermin,'Minimum value of dielectric constant:');
+
+//Guide wavelength
+lam1=lam/sqrt(er);//cm
+lamg=lam1/sqrt(1-(lam1/lamc)^2);
+disp('cm',lamg,'Guide wavelength:');
+
+lamm1=lam1/100;
+ad=(%pi/lamm1)*(tandel/sqrt(1-(lam1/lamc)^2));
+disp('Np/m',ad,'ad:');
+bet=2*%pi/lamg;
+disp('rad/cm',bet,'Beta:');
+vp=w/(bet*100);
+disp('m/s',vp,'Phase velocity:');
+
+
diff --git a/3281/CH2/EX2.27/ex2_27.jpg b/3281/CH2/EX2.27/ex2_27.jpg Binary files differnew file mode 100755 index 000000000..bf7ce54ac --- /dev/null +++ b/3281/CH2/EX2.27/ex2_27.jpg diff --git a/3281/CH2/EX2.27/ex2_27.sce b/3281/CH2/EX2.27/ex2_27.sce new file mode 100755 index 000000000..96792321d --- /dev/null +++ b/3281/CH2/EX2.27/ex2_27.sce @@ -0,0 +1,45 @@ +//Page Number: 110
+//Example 2.27
+clc;
+//Given
+c=3D+8; //m/s
+a=0.5; //cm
+a1=a/100; //m
+f=14D+9; //Hz
+er=2.08;
+p11=1.841;
+p01=2.405;
+tandel=4D-4;
+w=2*%pi*f;
+u=%pi*4D-7;
+sig=4.1D+7;
+et=377;
+
+//(i) Cut off frequencies
+fcte11=p11*c/(2*%pi*a1*sqrt(er));
+fctm01=p01*c/(2*%pi*a1*sqrt(er));
+disp('Ghz',fcte11/10^9,'Cut off frequencies for TE11 mode:');
+disp('Ghz',fctm01/10^9,'Cut off frequencies for TM01 mode:');
+
+//(ii) Overall noise
+//Dielectric attenuation
+ad=(%pi*sqrt(er)*tandel*f)/(c*sqrt(1-((fcte11/f)^2)));
+disp('dB/m',ad*8.686,'Dielectric attenuation:');
+
+//Conductor attenuation
+k=(2*%pi*f*sqrt(er))/c;
+bet=sqrt((k*k)-((p11/a1)^2));
+//Surface resistance
+rs=sqrt((w*u)/(2*sig));
+kc2=(p11/a1)^2;
+
+ac=(rs*(kc2-((k^2)/((p11^2)-1))))/(a1*k*et*bet);
+disp('dB/m',ac*8.686,'Conductor attenuation:');
+
+//Total attenuation
+a=(ac+ad)*8.686;
+disp('dB/m',a,'Total attenuation:');
+ta=a*0.3;
+disp('dB',ta,'Total attenuation in 30 cm line:');
+
+//Answer for condcutor attenuation is wrong in book, hence answer for total loss is different
diff --git a/3281/CH2/EX2.28/ex2_28.jpg b/3281/CH2/EX2.28/ex2_28.jpg Binary files differnew file mode 100755 index 000000000..838bc3183 --- /dev/null +++ b/3281/CH2/EX2.28/ex2_28.jpg diff --git a/3281/CH2/EX2.28/ex2_28.sce b/3281/CH2/EX2.28/ex2_28.sce new file mode 100755 index 000000000..6aef5aca1 --- /dev/null +++ b/3281/CH2/EX2.28/ex2_28.sce @@ -0,0 +1,29 @@ +//Page Number: 112
+//Example 2.28
+clc;
+//Given
+c=3D+8; //m/s
+er=9;
+a=7; //cm
+a1=a/100; //m
+b=3.5; //cm
+b1=b/100; //m
+ur=1;
+f1=2D+9; //Hz
+
+//(i) Cut off frequency
+lamc=2*a1;
+fc=c/(lamc*sqrt(ur*er));
+disp('Ghz',fc/10^9,'Cut off frequency:');
+
+//(ii) Phase velocity
+lam=c/f1;//m
+lam1=lam*100;//cm
+lamc1=lamc*100;//cm
+lamg=lam1/(sqrt((ur*er)-((lamc1/lam1)^2))); //cm
+lamg1=lamg/100;//m
+vp=f1*lamg1;
+disp('m/s',vp,'Phase velocity:');
+
+///(iii)Guide wavelength
+disp('cm',lamg,'Guide wavelength:');
diff --git a/3281/CH2/EX2.29/ex2_29.jpg b/3281/CH2/EX2.29/ex2_29.jpg Binary files differnew file mode 100755 index 000000000..9573ea601 --- /dev/null +++ b/3281/CH2/EX2.29/ex2_29.jpg diff --git a/3281/CH2/EX2.29/ex2_29.sce b/3281/CH2/EX2.29/ex2_29.sce new file mode 100755 index 000000000..a99d15819 --- /dev/null +++ b/3281/CH2/EX2.29/ex2_29.sce @@ -0,0 +1,18 @@ +//Page Number: 112
+//Example 2.29
+clc;
+//Given
+c=3D+8; //m/s
+fc=9D+9; //Hz
+er=1;
+er1=4;
+p11=1.841;
+
+//(i) air filled
+a=(p11*c)/(2*%pi*fc*sqrt(er));
+disp('cm',a*100,'Inside diameter if air filled:');
+//(ii) dielectric field
+a1=(p11*c)/(2*%pi*fc*sqrt(er1));
+disp('cm',a1*100,'Inside diameter if dielectric filled:');
+
+//Answers are calculated wrong in book
diff --git a/3281/CH2/EX2.3/ex2_3.jpg b/3281/CH2/EX2.3/ex2_3.jpg Binary files differnew file mode 100755 index 000000000..f2721e0ab --- /dev/null +++ b/3281/CH2/EX2.3/ex2_3.jpg diff --git a/3281/CH2/EX2.3/ex2_3.sce b/3281/CH2/EX2.3/ex2_3.sce new file mode 100755 index 000000000..29f5b037f --- /dev/null +++ b/3281/CH2/EX2.3/ex2_3.sce @@ -0,0 +1,23 @@ +//Page Number: 92
+//Example 2.3
+clc;
+//Given,
+
+c=3D+8; //m/s
+a=4; //cm
+b=2; //cm
+f=10D+9; //Hz
+m=1;
+n=1;
+
+
+//Cutoff wavelength
+lamc=2/sqrt((m/a)^2+(n/b)^2);
+disp('cm',lamc,'Cut-off wavelength:');
+
+//Wave impedance
+lam=c/f;//m
+lam=lam*100;//cm
+eeta=120*%pi;
+z0=eeta*sqrt(1-(lam/lamc)^2);
+disp('ohm',z0,'Wave impedance:');
diff --git a/3281/CH2/EX2.30/ex2_30.jpg b/3281/CH2/EX2.30/ex2_30.jpg Binary files differnew file mode 100755 index 000000000..e25b123ee --- /dev/null +++ b/3281/CH2/EX2.30/ex2_30.jpg diff --git a/3281/CH2/EX2.30/ex2_30.sce b/3281/CH2/EX2.30/ex2_30.sce new file mode 100755 index 000000000..4d7472822 --- /dev/null +++ b/3281/CH2/EX2.30/ex2_30.sce @@ -0,0 +1,21 @@ +//Page Number: 113
+//Example 2.30
+clc;
+//Given
+c=3D+8; //m/s
+er=2.55;
+d=1; //mm
+d1=d/1000;//m
+
+//Cut off frequencies
+fctm0=0;
+disp('Ghz',fctm0,'Cut off frequency for mode TM0:');
+
+fcte1=c/(4*d1*sqrt(er-1));
+disp('Ghz',fcte1/10^9,'Cut off frequency at mode TE1:');
+
+fctm1=c/(2*d1*sqrt(er-1));
+disp('Ghz',fctm1/10^9,'Cut off frequency at mode TM1:');
+
+
+//Answers are calculated wrong in book
diff --git a/3281/CH2/EX2.31/ex2_31.jpg b/3281/CH2/EX2.31/ex2_31.jpg Binary files differnew file mode 100755 index 000000000..188a93ca6 --- /dev/null +++ b/3281/CH2/EX2.31/ex2_31.jpg diff --git a/3281/CH2/EX2.31/ex2_31.sce b/3281/CH2/EX2.31/ex2_31.sce new file mode 100755 index 000000000..514bb9e4d --- /dev/null +++ b/3281/CH2/EX2.31/ex2_31.sce @@ -0,0 +1,14 @@ +//Page Number: 113
+//Example 2.31
+clc;
+//Given,
+c=3D+8; //m/s
+f=15D+9; //hz
+d=5; //mm
+d1=d/1000; //m
+
+//Cut off frequency
+fc=0.8*f;
+//Dielctric constant
+er=(c/(2*d1*fc))^2+1;
+disp(er,'Dielectric constant:');
diff --git a/3281/CH2/EX2.4/ex2_4.jpg b/3281/CH2/EX2.4/ex2_4.jpg Binary files differnew file mode 100755 index 000000000..d8d690041 --- /dev/null +++ b/3281/CH2/EX2.4/ex2_4.jpg diff --git a/3281/CH2/EX2.4/ex2_4.sce b/3281/CH2/EX2.4/ex2_4.sce new file mode 100755 index 000000000..b1f895612 --- /dev/null +++ b/3281/CH2/EX2.4/ex2_4.sce @@ -0,0 +1,13 @@ +//Page Number: 93
+//Example 2.4
+clc;
+//Given,
+c=3D+8; //m/s
+f=10D+9; //Hz
+zte=410; //ohm
+
+//Wider dimension
+lam=c/f;//m
+lam=lam*100;//cm
+a=3/(2*(sqrt(1-(120*%pi/zte)^2)));
+disp('cm',a,'Wider dimension:');
diff --git a/3281/CH2/EX2.5/ex2_5.jpg b/3281/CH2/EX2.5/ex2_5.jpg Binary files differnew file mode 100755 index 000000000..393416a09 --- /dev/null +++ b/3281/CH2/EX2.5/ex2_5.jpg diff --git a/3281/CH2/EX2.5/ex2_5.sce b/3281/CH2/EX2.5/ex2_5.sce new file mode 100755 index 000000000..7f5effca6 --- /dev/null +++ b/3281/CH2/EX2.5/ex2_5.sce @@ -0,0 +1,48 @@ +//Page Number: 93
+//Example 2.5
+clc;
+//Given,
+c=3D+8; //m/s
+a=3.0; //cm
+b=1.5; //cm
+mur=1;
+er=2.25;
+x=mur*er;
+
+//(i) Cutoff wavelength and frequencuy
+disp('TE10 mode');
+m1=1;
+n1=0;
+lamc10=2/sqrt((m1/a)^2+(n1/b)^2);
+disp('cm',lamc10,'Cut-off wavelength:');
+lamc10=lamc10/100;
+f10=c/(lamc10*sqrt(x));
+disp('Ghz',f10/1D+9,'Cutoff frequency:');
+
+disp('TE20 mode');
+m2=2;
+n2=0;
+lamc20=2/sqrt((m2/a)^2+(n2/b)^2);
+disp('cm',lamc20,'Cut-off wavelength:');
+lamc20=lamc20/100;
+f20=c/(lamc20*sqrt(x));
+disp('Ghz',f20/1D+9,'Cutoff frequency:');
+
+disp('TE11 mode');
+m3=1;
+n3=1;
+lamc11=2/sqrt((m3/a)^2+(n3/b)^2);
+disp('cm',lamc11,'Cut-off wavelength:');
+lamc11=lamc11/100;
+f11=c/(lamc11*sqrt(x));
+disp('Ghz',f11/1D+9,'Cutoff frequency:');
+
+//(ii) lambg and Z0
+f=4D+9; //Hz
+lam=c/f;
+lamg=lam/(sqrt(x-((lam/lamc10)^2)));
+disp('cm',lamg*100,'Guide wavelength:');
+
+fc=3.33D+9; //Hz
+Z0=(120*%pi*(1/sqrt(x))*(b/a))/sqrt(1-((fc/f)^2));
+disp('ohm',round(Z0),'Impedance:');
diff --git a/3281/CH2/EX2.7/ex2_7.jpg b/3281/CH2/EX2.7/ex2_7.jpg Binary files differnew file mode 100755 index 000000000..112b4be69 --- /dev/null +++ b/3281/CH2/EX2.7/ex2_7.jpg diff --git a/3281/CH2/EX2.7/ex2_7.sce b/3281/CH2/EX2.7/ex2_7.sce new file mode 100755 index 000000000..e442d13fc --- /dev/null +++ b/3281/CH2/EX2.7/ex2_7.sce @@ -0,0 +1,36 @@ +//Page Number: 95
+//Example 2.5
+clc;
+//Given,
+c=3D+8; //m/s
+a=4; //cm
+b=2; //cm
+
+//(i) Mode
+lamc=2*a; //cm
+lamcm=lamc/100; //m
+fc=c/lamcm;
+//20% above fc
+f=1.2*fc; //Hz
+
+//Operating wavelength
+lam1=c/f; //cm
+
+//For TE10 mode
+lamc10=2*b;//cm
+lamcm10=lamc10/100;//m
+fc10=c/lamcm10;
+disp('Hence mode of operation is TE10','Hz',fc,'Since guide is operating at');
+
+//(ii)Guide wavelength
+lamm1=lam1*100;//cm
+lamg=lamm1/(sqrt(1-(lamm1/lamc)^2));
+disp('cm',lamg,'Guide wavelength:');
+
+//(iii) Phase velocity
+vp=f*lamg;
+disp('m/s',vp/100,'Phase velocity:');
+
+//(iii) Group velocity
+vg=c^2/vp;
+disp('m/s',vg,'Group velocity:');
diff --git a/3281/CH2/EX2.8/ex2_8.jpg b/3281/CH2/EX2.8/ex2_8.jpg Binary files differnew file mode 100755 index 000000000..2b1fd77e2 --- /dev/null +++ b/3281/CH2/EX2.8/ex2_8.jpg diff --git a/3281/CH2/EX2.8/ex2_8.sce b/3281/CH2/EX2.8/ex2_8.sce new file mode 100755 index 000000000..43e766ac1 --- /dev/null +++ b/3281/CH2/EX2.8/ex2_8.sce @@ -0,0 +1,28 @@ +//Page Number: 96
+//Example 2.8
+clc;
+//Given,
+c=3D+8; //m/s
+a=7; //cm
+b=3.5; //cm
+f=3D+9; //Hz
+h0=10; //amp/m
+
+//Wave impedance
+lamc=2*a;
+lam=c/f;//m
+lam=lam*100;//cm
+lamg=lam/sqrt(1-(lam/lamc)^2); //cm
+z0=377*lamg/h0; //ohm
+
+a1=a/100;//m
+b1=b/100;//m
+//Average power transmitted
+p=(z0*h0*h0*a1*b1)/4;
+disp('W',p,'Average power transmitted:');
+
+//Peak electric field
+e0=z0*h0;
+disp('kV/m',e0/1000,'Peak electric field:');
+
+//Answer for p is given as 28.3 W but it should be 32.99W
diff --git a/3281/CH2/EX2.9/ex2_9.jpg b/3281/CH2/EX2.9/ex2_9.jpg Binary files differnew file mode 100755 index 000000000..139c5e52a --- /dev/null +++ b/3281/CH2/EX2.9/ex2_9.jpg diff --git a/3281/CH2/EX2.9/ex2_9.sce b/3281/CH2/EX2.9/ex2_9.sce new file mode 100755 index 000000000..2fad2b547 --- /dev/null +++ b/3281/CH2/EX2.9/ex2_9.sce @@ -0,0 +1,15 @@ +//Page Number: 96
+//Example 2.9
+clc;
+//Given,
+c=3D+8; //m/s
+fc=3D+9; //Hz
+
+//Cutoff wavelength
+lamc=c/fc;
+a=lamc/2;//m
+a=a*100;//cm
+disp('Dimensions:');
+disp('cm',a,'a:');
+b=a/2; //cm
+disp('cm',b,'b:');
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