diff options
Diffstat (limited to '1574/CH3')
56 files changed, 387 insertions, 0 deletions
diff --git a/1574/CH3/EX3.1/M_Ex_3_1.sce b/1574/CH3/EX3.1/M_Ex_3_1.sce new file mode 100755 index 000000000..7ef07e9be --- /dev/null +++ b/1574/CH3/EX3.1/M_Ex_3_1.sce @@ -0,0 +1,12 @@ +clc
+//Chapter3: Modulation
+//Example3.1, page no 135
+//Given
+Ic=10 //carrier current in Amps
+Imod=11.6// Current after modulation
+Rl=1//Assumed load in ohm
+Pmod=Rl*Imod^2//power before modulation
+Ma= sqrt(2*((Pmod/Ic^2)-1))//percentage modulation
+Pc=10
+Pmod=Pc*(1+(Ma^2/2))//power after modulation
+mprintf('percentage modulation is:%f%c\n Power after modulation is:%f watts',Ma*100,'%',Pmod)
diff --git a/1574/CH3/EX3.1/Result_of_Chapter_3_Ex3_1.JPG b/1574/CH3/EX3.1/Result_of_Chapter_3_Ex3_1.JPG Binary files differnew file mode 100755 index 000000000..5da74a2d8 --- /dev/null +++ b/1574/CH3/EX3.1/Result_of_Chapter_3_Ex3_1.JPG diff --git a/1574/CH3/EX3.10/M_Ex_3_10.sce b/1574/CH3/EX3.10/M_Ex_3_10.sce new file mode 100755 index 000000000..5aab2a5af --- /dev/null +++ b/1574/CH3/EX3.10/M_Ex_3_10.sce @@ -0,0 +1,33 @@ +
+clc
+//Answers from the book are little deviated but the evaluated values in the scilab are correct results
+//Chapter3: Modulation
+//Example3.10, page no 143
+//Given
+//b
+Pc=50e3//Carrier power
+Z=36 + %i*40//base impedance of the antenna
+Ma=1//modulation depth
+Pmod=Pc*(1+((Ma^2)/2))//power delivered to the antenna under 100% modulation
+//i
+R=36//resistance of the antenna
+Irms=sqrt(Pmod/R)//Antenna Current
+
+//ii
+Ic=sqrt(Pc/R)//RMS carrier current
+
+Icm=Ic*sqrt(2)// Peak carrier current
+Imod=2*Icm//Modulated current
+
+Theta=atan(40/36)*180/%pi// from real and imaginary components of Z
+Vbm100=Imod*Z//Peak base output voltage for 100% modulation
+[Re_Vb,Im_Vb]=polar(Vbm100)
+
+//iii
+Ma=0.5
+Imod=Icm*(1+0.5)
+
+Vbm50=Imod*Z
+[Re_Vb1,Im_Vb1]=polar(Vbm50)
+mprintf('Antenna current for full modulation is: %f amp\nPeak base voltage is: %f/_%d volts\nPeak base voltage is: %f/_%d volts',Irms,Re_Vb,Theta,Re_Vb1,Theta)
+// The Ans is little deviated from that of book as the decimal places considered while calculating at different stages might be different
diff --git a/1574/CH3/EX3.10/Result_of_Chapter_3_Ex3_10.JPG b/1574/CH3/EX3.10/Result_of_Chapter_3_Ex3_10.JPG Binary files differnew file mode 100755 index 000000000..8749880ab --- /dev/null +++ b/1574/CH3/EX3.10/Result_of_Chapter_3_Ex3_10.JPG diff --git a/1574/CH3/EX3.11/M_Ex_3_11.sce b/1574/CH3/EX3.11/M_Ex_3_11.sce new file mode 100755 index 000000000..6ce1df5d8 --- /dev/null +++ b/1574/CH3/EX3.11/M_Ex_3_11.sce @@ -0,0 +1,24 @@ +clf();
+clc
+//Chapter3: Modulation
+//Example3.11, page no 144
+//Given
+deff("[y]=f(x)","y=Ec*(1+ma*(sin(wm*x)))*sin(wc*x)")
+Ec=10,ma=0.5,wm=10000*%pi,wc=2*%pi*1e7
+x=[0:0.01:20]*%pi/10;
+subplot(2,1,1)
+fplot2d(x,f)
+xlabel("t", "fontsize", 3);
+ylabel("Modulated Wave", "fontsize", 3, "color", "red");
+Fc=wc/(2*%pi)
+Fm=wm/(2*%pi)
+Fusb=(wm+wc)/(2*%pi)
+Flsb=(wm-wc)/(2*%pi)
+mprintf('USB freq=%d k5Hz\nUSB amplitude=%f V\nLSB freq=%d kHz\nLSB amplitude=%f V\nCarrier amplitude=%d V',Fusb*1e-3,2.5,Flsb*-1e-3,2.5,10)
+F=[0,2.5,10,2.5,0]
+T=[-2,-1,0,1,2]
+subplot(2,1,2)
+plot2d3(T,F,5)
+xlabel("Freq", "fontsize", 3);
+ylabel("Amplitude", "fontsize", 3, "color", "blue");
+xlabel("fc-fm fc fc+fm", "fontsize", 2);
diff --git a/1574/CH3/EX3.11/Result_Figure_3_Ex3_11.jpg b/1574/CH3/EX3.11/Result_Figure_3_Ex3_11.jpg Binary files differnew file mode 100755 index 000000000..ea9b4370d --- /dev/null +++ b/1574/CH3/EX3.11/Result_Figure_3_Ex3_11.jpg diff --git a/1574/CH3/EX3.11/Result_of_Chapter_3_Ex3_11.JPG b/1574/CH3/EX3.11/Result_of_Chapter_3_Ex3_11.JPG Binary files differnew file mode 100755 index 000000000..723cc9fc5 --- /dev/null +++ b/1574/CH3/EX3.11/Result_of_Chapter_3_Ex3_11.JPG diff --git a/1574/CH3/EX3.12/M_Ex_3_12.sce b/1574/CH3/EX3.12/M_Ex_3_12.sce new file mode 100755 index 000000000..f6dc81b03 --- /dev/null +++ b/1574/CH3/EX3.12/M_Ex_3_12.sce @@ -0,0 +1,8 @@ +clc
+//Chapter3: Modulation
+//Example3.12 page no 145
+//Given
+Pc=9e3//unmodulated carrier power
+Pt=10.125e3//Modulated carrier power
+Ma=sqrt(2*((Pt/Pc)-1))//depth of modulation
+mprintf('The depth of modulation is: %d%c',Ma*100,'%')
diff --git a/1574/CH3/EX3.12/Result_of_Chapter_3_Ex3_12.JPG b/1574/CH3/EX3.12/Result_of_Chapter_3_Ex3_12.JPG Binary files differnew file mode 100755 index 000000000..6ac9fc998 --- /dev/null +++ b/1574/CH3/EX3.12/Result_of_Chapter_3_Ex3_12.JPG diff --git a/1574/CH3/EX3.13/M_Ex_3_13.sce b/1574/CH3/EX3.13/M_Ex_3_13.sce new file mode 100755 index 000000000..8b68e9a9a --- /dev/null +++ b/1574/CH3/EX3.13/M_Ex_3_13.sce @@ -0,0 +1,11 @@ +clc
+//Chapter3: Modulation
+//Example3.13 page no 148
+//Given
+Pt=5e3//carrier power for 95% modulation
+Ma=0.95
+Pc=Pt/(1+((Ma^2)/2))//carrier power
+Ma=0.2//average modulation by speech signal
+Psb=(Ma^2)*Pc/2//the power n the sideband
+Pout=Psb/2// because one of the side band is suppressed
+mprintf('The power output is: %f W',Pout)
diff --git a/1574/CH3/EX3.13/Result_of_Chapter_3_Ex3_13.JPG b/1574/CH3/EX3.13/Result_of_Chapter_3_Ex3_13.JPG Binary files differnew file mode 100755 index 000000000..4bc4c24c5 --- /dev/null +++ b/1574/CH3/EX3.13/Result_of_Chapter_3_Ex3_13.JPG diff --git a/1574/CH3/EX3.14/M_Ex_3_14.sce b/1574/CH3/EX3.14/M_Ex_3_14.sce new file mode 100755 index 000000000..fc63de631 --- /dev/null +++ b/1574/CH3/EX3.14/M_Ex_3_14.sce @@ -0,0 +1,12 @@ +clc
+//Chapter3: Modulation
+//Example3.14 page no 152
+//Given
+//Phi=(wc*t+Mf*sin(wmt))....instantaneous phase of FM
+fm=5000//modulating freq
+deltaf=50e3//freq deviation
+deltaPhi1=deltaf/fm// Advance or retard in phase
+
+fm=100//modulating freq in second signal
+deltaPhi2=deltaf/fm
+mprintf('DeltaPhi1= %d rad\nDeltaPhi2=%d rad\n',deltaPhi1,deltaPhi2)
diff --git a/1574/CH3/EX3.14/Result_of_Chapter_3_Ex3_14.JPG b/1574/CH3/EX3.14/Result_of_Chapter_3_Ex3_14.JPG Binary files differnew file mode 100755 index 000000000..820b90c4f --- /dev/null +++ b/1574/CH3/EX3.14/Result_of_Chapter_3_Ex3_14.JPG diff --git a/1574/CH3/EX3.15/M_Ex_3_15.sce b/1574/CH3/EX3.15/M_Ex_3_15.sce new file mode 100755 index 000000000..09384e1b9 --- /dev/null +++ b/1574/CH3/EX3.15/M_Ex_3_15.sce @@ -0,0 +1,16 @@ +clc
+//Chapter3: Modulation
+//Example3.14 page no 157
+//Given
+//e=Ec(1+0.4cos(2pie3*t))*sin(2pie7*t)
+fm=1000//modulating s/g freq
+deltaTheta=2*atan(0.4)//peak phase deviation
+
+deltaF=deltaTheta*fm//Peak freq deviation
+
+Ec=1
+Er=sqrt((Ec^2)*(1+(0.4^2)))
+m=(Er-Ec)/Ec//depth of residual AM
+
+AMFr=2*fm// freq ofresidual AM
+mprintf('Peak Phase Deviation: %f rad\nPeak Freq Deviation: %d Hz\nDepth of residual AM: %f\nResidual AM freq:%d kHz',deltaTheta,deltaF,(round(m*100)/100),AMFr*1e-3)
diff --git a/1574/CH3/EX3.15/Result_of_Chapter_3_Ex3_15.JPG b/1574/CH3/EX3.15/Result_of_Chapter_3_Ex3_15.JPG Binary files differnew file mode 100755 index 000000000..28daf2f2c --- /dev/null +++ b/1574/CH3/EX3.15/Result_of_Chapter_3_Ex3_15.JPG diff --git a/1574/CH3/EX3.16/M_Ex_3_16.sce b/1574/CH3/EX3.16/M_Ex_3_16.sce new file mode 100755 index 000000000..f686a740d --- /dev/null +++ b/1574/CH3/EX3.16/M_Ex_3_16.sce @@ -0,0 +1,16 @@ +clc
+//Chapter3: Modulation
+//Example3.16 page no 170
+//Given
+deltaF=25e3//freq deviation
+//a
+fm=100//modulation signal freq
+mf=deltaF/fm// Max phase deviation
+disp('a)')
+mprintf('Max phase deviation is:%d rad',mf)
+//b
+fm=10e3//modulation signal freq
+mf=deltaF/fm//Max phase deviation
+
+disp('b)')
+mprintf('Max phase deviation is:%f rad',mf)
diff --git a/1574/CH3/EX3.16/Result_of_Chapter_3_Ex3_16.JPG b/1574/CH3/EX3.16/Result_of_Chapter_3_Ex3_16.JPG Binary files differnew file mode 100755 index 000000000..18bb168fb --- /dev/null +++ b/1574/CH3/EX3.16/Result_of_Chapter_3_Ex3_16.JPG diff --git a/1574/CH3/EX3.17/M_Ex_3_17.sce b/1574/CH3/EX3.17/M_Ex_3_17.sce new file mode 100755 index 000000000..ac7a8f219 --- /dev/null +++ b/1574/CH3/EX3.17/M_Ex_3_17.sce @@ -0,0 +1,15 @@ +clc
+//Chapter3: Modulation
+//Example3.17, page no 171
+//Given
+gm=0.1e-3// trans-conductance variation A/V
+C=0.5e-12// capactance between anode and grid
+R=1e3// resistance
+fo=10e6// oscillator freq
+Vrms=1.414//AF RMS voltage
+Vp=sqrt(2)*Vrms//Peak voltage
+Ct=100e-12//tank capacitance
+deltaC=gm*C*R*Vp
+
+deltaF=fo*(deltaC/(2*Ct))// maximum freq deviation
+mprintf('The maximum freq deviation is: %d kHz',round(deltaF/1000))
diff --git a/1574/CH3/EX3.17/Result_of_Chapter_3_Ex3_17.JPG b/1574/CH3/EX3.17/Result_of_Chapter_3_Ex3_17.JPG Binary files differnew file mode 100755 index 000000000..ecd8902a9 --- /dev/null +++ b/1574/CH3/EX3.17/Result_of_Chapter_3_Ex3_17.JPG diff --git a/1574/CH3/EX3.18/M_Ex_3_18.sce b/1574/CH3/EX3.18/M_Ex_3_18.sce new file mode 100755 index 000000000..4279b01a7 --- /dev/null +++ b/1574/CH3/EX3.18/M_Ex_3_18.sce @@ -0,0 +1,9 @@ +clc
+//Chapter3: Modulation
+//Example3.18, page no 172
+//Given
+deltaF=1e6// max freq deviation
+fm=10e3//modulating freq
+mf=(2*deltaF)/fm// modulation coefficient
+BW=mf*fm// bandwidth
+mprintf('The approximate bandwidth is: %d MHz',BW/1e6)
diff --git a/1574/CH3/EX3.18/Result_of_Chapter_3_Ex3_18.JPG b/1574/CH3/EX3.18/Result_of_Chapter_3_Ex3_18.JPG Binary files differnew file mode 100755 index 000000000..9e254b414 --- /dev/null +++ b/1574/CH3/EX3.18/Result_of_Chapter_3_Ex3_18.JPG diff --git a/1574/CH3/EX3.19/M_Ex_3_19.sce b/1574/CH3/EX3.19/M_Ex_3_19.sce new file mode 100755 index 000000000..3a03a307b --- /dev/null +++ b/1574/CH3/EX3.19/M_Ex_3_19.sce @@ -0,0 +1,9 @@ +clc
+//Chapter3: Modulation
+//Example3.19, page no 172
+//Given
+deltaF=75e3// max freq deviation
+fm=15e3//modulation freq
+mf=(2*deltaF)/fm// freq modulation depth
+BW=mf*fm// Bandwidth
+mprintf('The approximate bandwidth is: %d kHz',BW/1e3)
diff --git a/1574/CH3/EX3.19/Result_of_Chapter_3_Ex3_19.JPG b/1574/CH3/EX3.19/Result_of_Chapter_3_Ex3_19.JPG Binary files differnew file mode 100755 index 000000000..089188098 --- /dev/null +++ b/1574/CH3/EX3.19/Result_of_Chapter_3_Ex3_19.JPG diff --git a/1574/CH3/EX3.2/M_Ex_3_2.sce b/1574/CH3/EX3.2/M_Ex_3_2.sce new file mode 100755 index 000000000..492f599a3 --- /dev/null +++ b/1574/CH3/EX3.2/M_Ex_3_2.sce @@ -0,0 +1,8 @@ +clc
+//Chapter3: Modulation
+//Example3.2, page no 135
+//Given
+Pc=9e3// Tx Power without modulation
+Pmod=10.125e3//Tx Power after modulation
+Ma= sqrt(2*((Pmod/Pc)-1))//depth of (percentage) modulation
+mprintf('Depth of modulation is:%f',Ma)
diff --git a/1574/CH3/EX3.2/Result_of_Chapter_3_Ex3_2.JPG b/1574/CH3/EX3.2/Result_of_Chapter_3_Ex3_2.JPG Binary files differnew file mode 100755 index 000000000..9f3d0d8e1 --- /dev/null +++ b/1574/CH3/EX3.2/Result_of_Chapter_3_Ex3_2.JPG diff --git a/1574/CH3/EX3.21/M_Ex_3_21.sce b/1574/CH3/EX3.21/M_Ex_3_21.sce new file mode 100755 index 000000000..24f60827c --- /dev/null +++ b/1574/CH3/EX3.21/M_Ex_3_21.sce @@ -0,0 +1,11 @@ +clc
+//Chapter3: Modulation
+//Example3.21, page no 173
+//Given
+deltaF=75e3//freq deviation
+fm=15e3// modulating freq
+mf=deltaF/fm
+BW=2*mf*fm// Bandwidth
+GB=25e3//Guard Band
+BWo=BW+(2*GB)// Overall bandwidth
+mprintf('Overall bandwidth including guard band is %d kHz',BWo/1e3)
diff --git a/1574/CH3/EX3.21/Result_of_Chapter_3_Ex3_21.JPG b/1574/CH3/EX3.21/Result_of_Chapter_3_Ex3_21.JPG Binary files differnew file mode 100755 index 000000000..30a6ca8e3 --- /dev/null +++ b/1574/CH3/EX3.21/Result_of_Chapter_3_Ex3_21.JPG diff --git a/1574/CH3/EX3.25/M_Ex_3_25.sce b/1574/CH3/EX3.25/M_Ex_3_25.sce new file mode 100755 index 000000000..a7307b99c --- /dev/null +++ b/1574/CH3/EX3.25/M_Ex_3_25.sce @@ -0,0 +1,18 @@ +clc
+//Chapter3: Modulation
+//Example3.25, pageno 175
+//Given
+//em=3sin(2*pi*1000t)+5cos(2*pi*3000t)
+//ec=50sin(2*pi*500e3*t)
+m1=0.06//(sine wave amplitude/ peak carrier voltage)
+m2=0.1//(cosine wave amplitude/ peak carrier voltage)
+Vc=50//Carrier voltage
+R=50//load resistance
+Pc=(Vc^2)/(2*R)//Peak carrier power
+Pt=Pc*(1+((m1^2+m2^2)/2))//Total power after modulation
+mprintf('Average power is: %f watts',Pt)
+F=[0,2.5,1.5,50,1.5,2.5,0]
+T=[490,497,499,500,501,503,510]
+plot2d3(T,F,5)
+xlabel("Freq", "fontsize",3);
+ylabel("Amplitude", "fontsize",3, "color", "blue");
diff --git a/1574/CH3/EX3.25/Result_Figure_3_Ex3_25.jpg b/1574/CH3/EX3.25/Result_Figure_3_Ex3_25.jpg Binary files differnew file mode 100755 index 000000000..f0c20820c --- /dev/null +++ b/1574/CH3/EX3.25/Result_Figure_3_Ex3_25.jpg diff --git a/1574/CH3/EX3.25/Result_of_Chapter_3_Ex3_25.JPG b/1574/CH3/EX3.25/Result_of_Chapter_3_Ex3_25.JPG Binary files differnew file mode 100755 index 000000000..33b9fa6ee --- /dev/null +++ b/1574/CH3/EX3.25/Result_of_Chapter_3_Ex3_25.JPG diff --git a/1574/CH3/EX3.26/M_Ex_3_26.sce b/1574/CH3/EX3.26/M_Ex_3_26.sce new file mode 100755 index 000000000..934feb386 --- /dev/null +++ b/1574/CH3/EX3.26/M_Ex_3_26.sce @@ -0,0 +1,13 @@ +clc
+//Chapter3: Modulation
+//Example3.26, page no 176
+//Given
+mp=0.1//Modulating index
+fm=400//Modulating signal freq
+deltaF=mp*fm//Max freq deviation
+//disp(deltaF)
+ReqDev=50e3// Required deviation
+MF=ReqDev/deltaF// multiplication factor
+mprintf('Required Deviation is: %d kHz\n',ReqDev/1e3)
+mprintf('Required Multipication Factor is: 5*5*5*5*2')
+
diff --git a/1574/CH3/EX3.26/Result_of_Chapter_3_Ex3_26.JPG b/1574/CH3/EX3.26/Result_of_Chapter_3_Ex3_26.JPG Binary files differnew file mode 100755 index 000000000..add66e1cd --- /dev/null +++ b/1574/CH3/EX3.26/Result_of_Chapter_3_Ex3_26.JPG diff --git a/1574/CH3/EX3.27/M_Ex_3_27.sce b/1574/CH3/EX3.27/M_Ex_3_27.sce new file mode 100755 index 000000000..d32157439 --- /dev/null +++ b/1574/CH3/EX3.27/M_Ex_3_27.sce @@ -0,0 +1,13 @@ +clc
+//Chapter3: Modulation
+//Example3.27, page no 176
+//Given
+Q=100 //Q factor
+ fc=1000e3// Carrier freq
+fsb1=999e3//lower Side band freq
+fsb2=1001e3//Upper side Band freq
+ma=0.5//Modulation depth of signal current
+Ma=ma/1.019// Expression for Ma after simplification
+mprintf('The Depth of modulation across the \n circuit is : Ma= %f%c',Ma*100,'%')
+
+// Note : There are some calculation errors in the solution presented in the book
diff --git a/1574/CH3/EX3.27/Result_of_Chapter_3_Ex3_27.JPG b/1574/CH3/EX3.27/Result_of_Chapter_3_Ex3_27.JPG Binary files differnew file mode 100755 index 000000000..17b660462 --- /dev/null +++ b/1574/CH3/EX3.27/Result_of_Chapter_3_Ex3_27.JPG diff --git a/1574/CH3/EX3.28/M_Ex_3_28.sce b/1574/CH3/EX3.28/M_Ex_3_28.sce new file mode 100755 index 000000000..e4838c09c --- /dev/null +++ b/1574/CH3/EX3.28/M_Ex_3_28.sce @@ -0,0 +1,12 @@ +clc
+//Chapter3: Modulation
+//Example3.28, page no 177
+//Given
+R=1//Antenna Resistance assumed to be 1 ohm for ease of calculation
+Ic=10.8// current with no modulation
+Pc=Ic^2*R//power with no modulation
+It=12.15//modulated current
+Pt=It^2*R// modulated power
+ma=(sqrt(2*(((It/Ic)^2)-1)))//modulation depth)
+
+mprintf('Depth of modulation:%f %c',round(1000*ma)/10,'%');
diff --git a/1574/CH3/EX3.28/Result_of_Chapter_3_Ex3_28.JPG b/1574/CH3/EX3.28/Result_of_Chapter_3_Ex3_28.JPG Binary files differnew file mode 100755 index 000000000..cd506e47a --- /dev/null +++ b/1574/CH3/EX3.28/Result_of_Chapter_3_Ex3_28.JPG diff --git a/1574/CH3/EX3.29/M_Ex_3_29.sce b/1574/CH3/EX3.29/M_Ex_3_29.sce new file mode 100755 index 000000000..2d885623d --- /dev/null +++ b/1574/CH3/EX3.29/M_Ex_3_29.sce @@ -0,0 +1,8 @@ +clc
+//Chapter3: Modulation
+//Example3.29, page no 177
+//Given
+Pc=100e3//Carrier power
+ma=0.5//Depth of modulation
+Pt=Pc*(1+((ma^2)/2))//total RF power
+mprintf('Total RF power delivered is:Pt= %f kW',Pt/1e3)
diff --git a/1574/CH3/EX3.29/Result_of_Chapter_3_Ex3_29.JPG b/1574/CH3/EX3.29/Result_of_Chapter_3_Ex3_29.JPG Binary files differnew file mode 100755 index 000000000..bfd610671 --- /dev/null +++ b/1574/CH3/EX3.29/Result_of_Chapter_3_Ex3_29.JPG diff --git a/1574/CH3/EX3.3/M_Ex_3_3.sce b/1574/CH3/EX3.3/M_Ex_3_3.sce new file mode 100755 index 000000000..e5a577d6b --- /dev/null +++ b/1574/CH3/EX3.3/M_Ex_3_3.sce @@ -0,0 +1,9 @@ +clc
+//Chapter3: Modulation
+//Example3.3
+//Given
+M1=0.2//depth of modulation for first tone
+M2=0.4//depth of modulation for second tone
+Pc=1200//Tx Power
+Pmod=Pc*(1+M1^2/2+M2^2/2)//total power radiated after modulation by both the tones
+mprintf('The total power radiated is %d watts',Pmod)
diff --git a/1574/CH3/EX3.3/Result_of_Chapter_3_Ex3_3.JPG b/1574/CH3/EX3.3/Result_of_Chapter_3_Ex3_3.JPG Binary files differnew file mode 100755 index 000000000..e50ab3146 --- /dev/null +++ b/1574/CH3/EX3.3/Result_of_Chapter_3_Ex3_3.JPG diff --git a/1574/CH3/EX3.30/M_Ex_3_30.sce b/1574/CH3/EX3.30/M_Ex_3_30.sce new file mode 100755 index 000000000..eb844ac43 --- /dev/null +++ b/1574/CH3/EX3.30/M_Ex_3_30.sce @@ -0,0 +1,9 @@ +clc
+//Chapter3: Modulation
+//Example3.30, page no 178
+//Given
+Pt=100e3// Total power
+ma=0.9//Depth of modulation
+Pc=Pt/(1+((ma^2)/2))//Carrier power
+Psb=Pt-Pc// Intelligence power i.e sideband power
+mprintf('Carrier power:%f kW\nThe Intelligence power: %f kW',Pc/1000,Psb/1000)
diff --git a/1574/CH3/EX3.30/Result_of_Chapter_3_Ex3_30.JPG b/1574/CH3/EX3.30/Result_of_Chapter_3_Ex3_30.JPG Binary files differnew file mode 100755 index 000000000..879d9f651 --- /dev/null +++ b/1574/CH3/EX3.30/Result_of_Chapter_3_Ex3_30.JPG diff --git a/1574/CH3/EX3.31/M_Ex_3_31.sce b/1574/CH3/EX3.31/M_Ex_3_31.sce new file mode 100755 index 000000000..bcd4f95ee --- /dev/null +++ b/1574/CH3/EX3.31/M_Ex_3_31.sce @@ -0,0 +1,11 @@ +clc
+//Chapter3: Modulation
+//Example3.19, page no 178
+//Given
+R=1// load resistance
+Eo=100//RF voltage
+Po=Eo^2/R//Carrier power
+E=110//Modulated RMS voltage
+Pt=E^2/R//Total modulated power
+ma=sqrt(2*((Pt/Po)-1))// Depth of modulation
+mprintf('Modulation Index is: %f %c',ma*100,'%')
diff --git a/1574/CH3/EX3.31/Result_of_Chapter_3_Ex3_31.JPG b/1574/CH3/EX3.31/Result_of_Chapter_3_Ex3_31.JPG Binary files differnew file mode 100755 index 000000000..b7b6766db --- /dev/null +++ b/1574/CH3/EX3.31/Result_of_Chapter_3_Ex3_31.JPG diff --git a/1574/CH3/EX3.4/M_Ex_3_4.sce b/1574/CH3/EX3.4/M_Ex_3_4.sce new file mode 100755 index 000000000..5d0bb6220 --- /dev/null +++ b/1574/CH3/EX3.4/M_Ex_3_4.sce @@ -0,0 +1,17 @@ +clc
+//Chapter3: Modulation
+//Example3.4, page no 138
+//Given
+Ebb=2e3//DC plate supply
+Ecc=-500//DC grid bias
+Ib=67e-3//DC plate current
+Ic=30e-3//DC grid current
+Egm=750//RF peak grid voltage
+Pout=75//RF Power output
+Ma=0.75//Depth of modulation
+Paf=(Ma^2*Ebb*Ib)/(2*1)//modulating power required from the audio source
+Pdc=Ebb*Ib//Power supplied by DC source
+Zm=Ebb^2/Pdc//Modulator Impedance
+
+Pd=Pdc+Paf-Pout//Plate dissipation
+mprintf('modulating power required from the audio source\n is:%f watts\n Modulator Impedance is:%f ohm\n Plate dissipation is:%f watts',Paf,Zm,Pd)
diff --git a/1574/CH3/EX3.4/Result_of_Chapter_3_Ex3_4.JPG b/1574/CH3/EX3.4/Result_of_Chapter_3_Ex3_4.JPG Binary files differnew file mode 100755 index 000000000..68be46f20 --- /dev/null +++ b/1574/CH3/EX3.4/Result_of_Chapter_3_Ex3_4.JPG diff --git a/1574/CH3/EX3.5/M_Ex_3_5.sce b/1574/CH3/EX3.5/M_Ex_3_5.sce new file mode 100755 index 000000000..430a0803f --- /dev/null +++ b/1574/CH3/EX3.5/M_Ex_3_5.sce @@ -0,0 +1,24 @@ +clc
+//Chapter3: Modulation
+//Example3.5b, page no 139
+//Given
+Pd=944//Anode dissipation of the class C amplifier in watts
+Ma=0.6//modulation depth,
+Etta=0.6//efficiency
+Pout=(Etta*Pd/(1-Etta))//power dissipation at 60% modulation
+Pc=Pout/(1+(Ma^2/2))//Tx power
+Psb=Pout-Pc
+Pdc1=Pc/Etta//DC power inputto PA
+Paf=Psb/Etta// modulation power input to PA
+Eff=0.25// efficiency of the modulator
+Pdc2=Paf/Eff//DC power input to modulator
+Pdct=Pdc1+Pdc2//Total DC power to the system
+Effo=Pout/Pdct//Overall Efficiency
+Ma=1// 100% modulation
+Pt=Pc*(1+(Ma^2)/2)
+Psb=(Pc*Ma^2)/2
+Paf=Psb/Etta//modulating input power to PA
+Pdc2=Paf/Eff// DC power input to modulator
+Pd=Pdc2-Paf//Power dissipation at the modulator
+Effo1=Pout/(Pdc1+Pdc2)//Overall Efficiency
+mprintf('Tx power:%f Watts\n Power dissipation at the modulator is: %f Watts\n Overall Efficiency at0.6 modulation is:%f%c ',Pc,Pd,100*Effo,'%')
diff --git a/1574/CH3/EX3.5/Result_of_Chapter_3_Ex3_5.JPG b/1574/CH3/EX3.5/Result_of_Chapter_3_Ex3_5.JPG Binary files differnew file mode 100755 index 000000000..4fa278333 --- /dev/null +++ b/1574/CH3/EX3.5/Result_of_Chapter_3_Ex3_5.JPG diff --git a/1574/CH3/EX3.6/M_Ex_3_6.sce b/1574/CH3/EX3.6/M_Ex_3_6.sce new file mode 100755 index 000000000..92148739d --- /dev/null +++ b/1574/CH3/EX3.6/M_Ex_3_6.sce @@ -0,0 +1,18 @@ +clc
+//Chapter3: Modulation
+//Example3.6, page no 141
+//Given
+Pdc=1400//DC power i/p to PA under 100% modulation
+Ptdc=400//Plate dissipation
+Pd=Ptdc*(2/3)//DC plate dissipation
+
+Pdmod=Ptdc*(1/3)//
+Pc=Pdc-Pd//Carrier Power
+
+Psb=Pc/2//side band power
+Paf=Psb+Pdmod//output power of modulator
+
+Mod_Eff=0.6
+Pdc2=Paf/Mod_Eff//DC i/p power to the modulator
+Pd_AF=Pdc2-Paf//Plate dissipation inthe modulator
+mprintf('Carrier Power is: %f watts \n DC plate dissipation is: %f watts\n output power of modulator is: %f watts\n Plate dissipation inthe modulator is:%f watts',Pc,Pd,Paf,Pd_AF)
diff --git a/1574/CH3/EX3.6/Result_of_Chapter_3_Ex3_6.JPG b/1574/CH3/EX3.6/Result_of_Chapter_3_Ex3_6.JPG Binary files differnew file mode 100755 index 000000000..69ebc3fae --- /dev/null +++ b/1574/CH3/EX3.6/Result_of_Chapter_3_Ex3_6.JPG diff --git a/1574/CH3/EX3.7/M_Ex_3_7.sce b/1574/CH3/EX3.7/M_Ex_3_7.sce new file mode 100755 index 000000000..136eb51ee --- /dev/null +++ b/1574/CH3/EX3.7/M_Ex_3_7.sce @@ -0,0 +1,14 @@ +clc
+//Chapter3: Modulation
+//Example3.7, page no 141
+//Given
+Paf=500//Modulator output power
+Eff=0.75//Efficiency of the amplifier
+P_lost=Paf*(1-Eff)//modulating power lost in the amplifier
+Psb=Paf*Eff//side band power
+
+m=1
+Pc=2*Psb
+
+Pt=Pc+Psb//Total RF power
+mprintf('Maximum carrier power is: %d watts\n Total RF power is: %d watts',Pc,Pt)
diff --git a/1574/CH3/EX3.7/Result_of_Chapter_3_Ex3_7.JPG b/1574/CH3/EX3.7/Result_of_Chapter_3_Ex3_7.JPG Binary files differnew file mode 100755 index 000000000..7291f3173 --- /dev/null +++ b/1574/CH3/EX3.7/Result_of_Chapter_3_Ex3_7.JPG diff --git a/1574/CH3/EX3.8/M_Ex_3_8.sce b/1574/CH3/EX3.8/M_Ex_3_8.sce new file mode 100755 index 000000000..b38c1b9d7 --- /dev/null +++ b/1574/CH3/EX3.8/M_Ex_3_8.sce @@ -0,0 +1,14 @@ +clc
+//Chapter3: Modulation
+//Example3.8, page no 143
+//Given
+Po=3000// Rating of Power Amplifier
+Pr=750//Push-Pull amplifier rated as
+Paf=2*Pr//Rated power output from Push-Pull modulator
+Eff=0.6
+P_lost=Paf-(Eff*Paf)//Modulation power lost
+Psb=Paf-P_lost//side band power
+
+Pc=Po-Psb//Carrier power
+Ma=sqrt(2*Psb/Pc)*100//Maximum depth of modulation
+mprintf('Carrier power is: %d watts\n Maximum depth of modulation is: %f',Pc,Ma)
diff --git a/1574/CH3/EX3.8/Result_of_Chapter_3_Ex3_8.JPG b/1574/CH3/EX3.8/Result_of_Chapter_3_Ex3_8.JPG Binary files differnew file mode 100755 index 000000000..26ec9b89a --- /dev/null +++ b/1574/CH3/EX3.8/Result_of_Chapter_3_Ex3_8.JPG diff --git a/1574/CH3/EX3.9/M_Ex_3_9.sce b/1574/CH3/EX3.9/M_Ex_3_9.sce new file mode 100755 index 000000000..b6119d015 --- /dev/null +++ b/1574/CH3/EX3.9/M_Ex_3_9.sce @@ -0,0 +1,23 @@ +clc
+//Chapter3: Modulation, page no 142
+//Example3.9
+//Given
+t=0:0.001:10
+//e=500*(1+(0.4*sin(3140*t)))*sin(6.28e7*t)
+//a
+wc=6.28e7//Carrier angular frequency
+fc=wc/(2*%pi)// Carrier freq
+//b
+wm=3140//Modulating angular freq
+fm=wm/(2*%pi)//Modulating freq
+//c
+Ec=500///peak carrier voltage
+Pc=(Ec^2)/(2*600)//Carrier power
+//d
+Ma=0.4
+Pt=Pc*(1+(Ma^2 / 2))//Mean output power
+//e
+Rl=600//load resistance
+Ecp=Ec+(Ma*Ec)//Peak output voltage
+Ptm=Ecp^2/(2*Rl)//Peak power
+mprintf('Carrier freq is: %d MHz\nModulating freq is:%d Hz\nCarrier power is: %f watts\nMean output power is: %f watts\nPeak output power is: %f watts',round(fc*1e-6),round(fm),Pc,Pt,Ptm)
diff --git a/1574/CH3/EX3.9/Result_of_Chapter_3_Ex3_9.JPG b/1574/CH3/EX3.9/Result_of_Chapter_3_Ex3_9.JPG Binary files differnew file mode 100755 index 000000000..fb1b3b910 --- /dev/null +++ b/1574/CH3/EX3.9/Result_of_Chapter_3_Ex3_9.JPG |
