initial commit / add all books

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+clc;

+//page no 7-17

+//Example 7.1

+//Given

+fc=15;//in MHz

+fd=10;//in kHz

+fo=45;//in MHz

+//At point 1 in Fig 7.16

+fc1=4*fc;

+fd1=4*fd;

+fmax1=fc1+(fd1*10^(-3));

+fmin1=fc1-(fd1*10^(-3));

+disp(+'MHz',fc1,'Carrier frequency at point 1 is');

+disp(+'kHz',fd1,'frequency deviation at point 1 is');

+disp(+'MHz',fmax1,'fmax=');

+disp(+'MHz',fmin1,'fmin=');

+//At point 2, mixer gives difference frequency with fo=45MHz

+fc2=fc1-fo;

+fmax2=fmax1-fo;

+fmin2=fmin1-fo;

+fd2=(fc-fmin2)*10^3;

+disp(+'MHz',fc2,'Carrier frequency at point 2 is');

+disp(+'MHz',fmax2,'fmax=');

+disp(+'MHz',fmin2,'fmin=');

+disp(+'kHz',fd2,'Frequency deviation at point 2 is');