initial commit / add all books

4 files changed, 69 insertions, 0 deletions

diff --git a/752/CH7/EX7.3.1/7_3_1.sce b/752/CH7/EX7.3.1/7_3_1.sce
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+++ b/752/CH7/EX7.3.1/7_3_1.sce
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+clc;

+//page no 227

+//prob no. 7.3.1

+//An RF receiver tunes signal in 550-1600kHz with IF=455kHz

+fs_min=550*10^3;fs_max=1600*10^3;IF=455*10^3;

+//Determination of freq tuning ranges

+fo_min=fs_min+IF;

+fo_max=fs_max+IF;

+disp('Hz',fo_max,'fo_max=','Hz',fo_min,'fo_min=','The freq tuning range is');

+Rf=(fo_max)/(fo_min);//calculation of freq tuning range ratio

+disp(Rf,'Rf=','The tuning range ratio of oscillator is');

+Rc=Rf^2;//calculation of capacitance tuning range ratio

+disp(Rc,'Rc=','The capacitor tuning range ratio of oscillator is');

+//For RF section

+Rf1=fs_max/fs_min;

+disp(Rf1,'Rf=','The tuning range ratio of RF-ckt is');

+Rc1=Rf1^2; 

+disp(Rc1,'Rc','The capacitor tuning range ratio of RF-ckt is');
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diff --git a/752/CH7/EX7.4.1/7_4_1.sce b/752/CH7/EX7.4.1/7_4_1.sce
new file mode 100755
index 000000000..41f259a0e
--- /dev/null
+++ b/752/CH7/EX7.4.1/7_4_1.sce
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+clc;

+//page no 230

+//prob no. 7.4.1

+//Refer example 7.3.1

+//2-tuning capacitor with max 350pF/section ^ capacitance ratio in eg. 7.3.1

+Rco=8.463;Rfo=2.909;Rcs=4.182;Rfo=2.045;fo_max=2055*10^3;fo_min=1005*10^3;

+Cs_max=350*10^-12;

+//For the RF section

+Cs_min=Cs_max/Rcs;

+disp('F',Cs_min,'The Cs_min is'); 
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diff --git a/752/CH7/EX7.6.1/7_6_1.sce b/752/CH7/EX7.6.1/7_6_1.sce
new file mode 100755
index 000000000..35af4f8ba
--- /dev/null
+++ b/752/CH7/EX7.6.1/7_6_1.sce
@@ -0,0 +1,17 @@
+clc;

+//page no 234

+//prob no. 7.6.1

+// An AM broadcast receiver with following specifications is given

+IF=465;//IF in KHz

+fs=1000;//Tuning freq in KHz

+Q=50;//Quality factor

+// Oscillator freq fo is given as

+fo=fs+IF;

+// a) Image freq is given as

+fi=fo+IF;

+disp('KHz',fi,'Image freq is');

+y=fi/fs - fs/fi;

+// b) image rejection is given as 

+Ar=1/sqrt(1+(y*Q)^2);

+Ar_dB=20*log10(Ar);

+disp('dB',Ar_dB,'Image rejection is');
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diff --git a/752/CH7/EX7.7.1/7_7_1.sce b/752/CH7/EX7.7.1/7_7_1.sce
new file mode 100755
index 000000000..e5a4b93d5
--- /dev/null
+++ b/752/CH7/EX7.7.1/7_7_1.sce
@@ -0,0 +1,24 @@
+clc;

+//page no 236

+//prob no. 7.7.1

+// refer to example 7.3.1

+// A broadcast receiver is tuned to a signal with

+fs=950;//in KHz

+IF=455;//in KHz

+m=[1,2];

+n=[1,2];

+f0=fs+IF;

+disp('The sum of frequencies are');

+for i=1:1:2

+    for j=1:1:2

+fu1=n(j)/m(i) *f0 + 1/m(i) *IF;

+disp(fu1);

+end

+end

+disp('The difference of frequencies are');

+for i=1:1:2

+    for j=1:1:2

+fu2=n(j)/m(i) *f0 - 1/m(i) *IF;

+disp(fu2);

+end

+end
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