diff options
Diffstat (limited to '1574/CH9')
18 files changed, 97 insertions, 0 deletions
diff --git a/1574/CH9/EX9.1/Aerials_Ex_9_1.sce b/1574/CH9/EX9.1/Aerials_Ex_9_1.sce new file mode 100755 index 000000000..5a71b56bb --- /dev/null +++ b/1574/CH9/EX9.1/Aerials_Ex_9_1.sce @@ -0,0 +1,8 @@ +clc
+//Chapter9
+//Example9.1, page no 397
+//Given
+D=90// directivity
+lambda=2// wavelength
+Ae=(D*(lambda^2))/(4*%pi)//effective aperture
+mprintf('The maximum effective aperture of the\n aerial is %f sq m',Ae)
diff --git a/1574/CH9/EX9.1/Result_of_Chapter_9_Ex9_1.JPG b/1574/CH9/EX9.1/Result_of_Chapter_9_Ex9_1.JPG Binary files differnew file mode 100755 index 000000000..f1f2c6518 --- /dev/null +++ b/1574/CH9/EX9.1/Result_of_Chapter_9_Ex9_1.JPG diff --git a/1574/CH9/EX9.2/Aerials_Ex_9_2.sce b/1574/CH9/EX9.2/Aerials_Ex_9_2.sce new file mode 100755 index 000000000..9a402a53a --- /dev/null +++ b/1574/CH9/EX9.2/Aerials_Ex_9_2.sce @@ -0,0 +1,9 @@ +clc
+//Chapter9
+//Example9.2, page no 397
+//Given
+n=10//no of aerial elements
+d=0.5//distance in terms of wavelength
+Beam_Width=2/(n*d)//
+Beam_Width_degrees=Beam_Width*180/%pi
+mprintf('Angular beam width is %f degrees\nBeamWidth is %f rad',Beam_Width_degrees,Beam_Width)
diff --git a/1574/CH9/EX9.2/Result_of_Chapter_9_Ex9_2.JPG b/1574/CH9/EX9.2/Result_of_Chapter_9_Ex9_2.JPG Binary files differnew file mode 100755 index 000000000..f9b7fc22f --- /dev/null +++ b/1574/CH9/EX9.2/Result_of_Chapter_9_Ex9_2.JPG diff --git a/1574/CH9/EX9.3/Aerials_Ex_9_3.sce b/1574/CH9/EX9.3/Aerials_Ex_9_3.sce new file mode 100755 index 000000000..caacba570 --- /dev/null +++ b/1574/CH9/EX9.3/Aerials_Ex_9_3.sce @@ -0,0 +1,11 @@ +clc
+//Chapter9
+//Example9.3, pageno 397
+//Given
+r=1//assume distance for ease of calculation
+//Pav(theta)=(1000/(3*%pi*r^2))*((sin(theta))^2)
+theta=0:0.1:%pi
+x0=0,x1=%pi
+Pt=(2000/(3*r^2))*integrate('(sin(theta))^3','theta',x0,x1)//Total power radiated
+mprintf('Total power radiated is %f watts',Pt)
+
diff --git a/1574/CH9/EX9.3/Result_of_Chapter_9_Ex9_3.JPG b/1574/CH9/EX9.3/Result_of_Chapter_9_Ex9_3.JPG Binary files differnew file mode 100755 index 000000000..01d4630ef --- /dev/null +++ b/1574/CH9/EX9.3/Result_of_Chapter_9_Ex9_3.JPG diff --git a/1574/CH9/EX9.4/Aerials_Ex_9_4.sce b/1574/CH9/EX9.4/Aerials_Ex_9_4.sce new file mode 100755 index 000000000..c3a9405e7 --- /dev/null +++ b/1574/CH9/EX9.4/Aerials_Ex_9_4.sce @@ -0,0 +1,16 @@ +clc
+//Chapter9
+//Example9.4, page no 398
+//Given
+dl=2// length of wire
+I=6//current in the wire
+f=1e6// operating freq
+r=30e3//distance at which field is to be calculated
+theta=90//right angles to the wire axis
+lambda=300// wavelength
+w=2*%pi*f//angular freq
+c=3e8,t=f^-1
+Phi=w*(t-(r/c))//Phase shift
+Erad=25.13e-5*cos(Phi)//Radiation electric field intensity
+H=Erad/(120*%pi)//Radiation magnetic field intensity
+mprintf('electric field intensity is %f mV/m \n magnetic field intensity is %f uA/m',Erad*1e3,H*1e6)
diff --git a/1574/CH9/EX9.4/Result_of_Chapter_9_Ex9_4.JPG b/1574/CH9/EX9.4/Result_of_Chapter_9_Ex9_4.JPG Binary files differnew file mode 100755 index 000000000..d36b636cf --- /dev/null +++ b/1574/CH9/EX9.4/Result_of_Chapter_9_Ex9_4.JPG diff --git a/1574/CH9/EX9.5/Aerials_Ex_9_5.sce b/1574/CH9/EX9.5/Aerials_Ex_9_5.sce new file mode 100755 index 000000000..fd70e13c7 --- /dev/null +++ b/1574/CH9/EX9.5/Aerials_Ex_9_5.sce @@ -0,0 +1,11 @@ +clc
+//Chapter9
+//Example9.5
+//Given
+//c
+Rr=73// radition resistance
+Vrms=10//RMS voltage of the signal
+Zin_mod=sqrt((73^2)+(42^2))//absolute input impedance
+Irms=Vrms/Zin_mod//RMS current
+Pt=(Irms^2)*Rr// Radiated power
+mprintf('The radiated power is %f watts',round(100*Pt)/100)
diff --git a/1574/CH9/EX9.5/Result_of_Chapter_9_Ex9_5.JPG b/1574/CH9/EX9.5/Result_of_Chapter_9_Ex9_5.JPG Binary files differnew file mode 100755 index 000000000..143ce7555 --- /dev/null +++ b/1574/CH9/EX9.5/Result_of_Chapter_9_Ex9_5.JPG diff --git a/1574/CH9/EX9.6/Aerials_Ex_9_6.sce b/1574/CH9/EX9.6/Aerials_Ex_9_6.sce new file mode 100755 index 000000000..474b49a25 --- /dev/null +++ b/1574/CH9/EX9.6/Aerials_Ex_9_6.sce @@ -0,0 +1,12 @@ +clc
+//Chapter9
+//Example9.6
+//Given
+//b
+c=3e8
+f=2e9//operating freq
+Ae=100//aperture area
+lambda=c/f// operating wavwlength
+D=((4*3.141*Ae)/(lambda^2))// Directivity
+mprintf('Ideal directive gain is %d',D)
+
diff --git a/1574/CH9/EX9.6/Result_of_Chapter_9_Ex9_6.JPG b/1574/CH9/EX9.6/Result_of_Chapter_9_Ex9_6.JPG Binary files differnew file mode 100755 index 000000000..4caeb4ce7 --- /dev/null +++ b/1574/CH9/EX9.6/Result_of_Chapter_9_Ex9_6.JPG diff --git a/1574/CH9/EX9.7/Aerials_Ex_9_7.sce b/1574/CH9/EX9.7/Aerials_Ex_9_7.sce new file mode 100755 index 000000000..a4ffd9960 --- /dev/null +++ b/1574/CH9/EX9.7/Aerials_Ex_9_7.sce @@ -0,0 +1,10 @@ +clc
+//Chapter9
+//Example9.7, pageno 400
+//Given
+//b
+n=10// no of aerial elements
+lambda_d=2//
+BeamWidth=2*lambda_d/n// Beamwidth
+mprintf('The angular width is %f degrees',BeamWidth)
+
diff --git a/1574/CH9/EX9.7/Result_of_Chapter_9_Ex9_7.JPG b/1574/CH9/EX9.7/Result_of_Chapter_9_Ex9_7.JPG Binary files differnew file mode 100755 index 000000000..e742f4e71 --- /dev/null +++ b/1574/CH9/EX9.7/Result_of_Chapter_9_Ex9_7.JPG diff --git a/1574/CH9/EX9.8/Aerials_Ex_9_8.sce b/1574/CH9/EX9.8/Aerials_Ex_9_8.sce new file mode 100755 index 000000000..1bcd672a4 --- /dev/null +++ b/1574/CH9/EX9.8/Aerials_Ex_9_8.sce @@ -0,0 +1,7 @@ +clc
+//Chapter9
+//Example9.8, page no 400
+//Given
+D1=1,D2=1.5*D1 // diameters of the new reflectors D1=1assumed for ease of calculation
+G_dbs=10*log10((D2/D1)^2)//Gain in dBs
+mprintf('Overall Gain is %f dBs',round(1000*G_dbs)/1000)
diff --git a/1574/CH9/EX9.8/Result_of_Chapter_9_Ex9_8.JPG b/1574/CH9/EX9.8/Result_of_Chapter_9_Ex9_8.JPG Binary files differnew file mode 100755 index 000000000..a20f8477f --- /dev/null +++ b/1574/CH9/EX9.8/Result_of_Chapter_9_Ex9_8.JPG diff --git a/1574/CH9/EX9.9/Aerials_Ex_9_9.sce b/1574/CH9/EX9.9/Aerials_Ex_9_9.sce new file mode 100755 index 000000000..a41c72f4e --- /dev/null +++ b/1574/CH9/EX9.9/Aerials_Ex_9_9.sce @@ -0,0 +1,13 @@ +clc
+//Chapter9
+//Example9.9
+//Given
+//b
+c=3e8
+f=800e3// operating freq
+dl=27//effective height
+lambda=c/f
+
+Rr=40*(3.142^2)*(dl/lambda)^2//Radiation Resistance
+mprintf('Radiation resistance is %f ohm',Rr)
+
diff --git a/1574/CH9/EX9.9/Result_of_Chapter_9_Ex9_9.JPG b/1574/CH9/EX9.9/Result_of_Chapter_9_Ex9_9.JPG Binary files differnew file mode 100755 index 000000000..07a61c9ac --- /dev/null +++ b/1574/CH9/EX9.9/Result_of_Chapter_9_Ex9_9.JPG |
