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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2606/CH8/EX8.9 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2606/CH8/EX8.9')
| -rwxr-xr-x | 2606/CH8/EX8.9/ex8_9.jpg | bin | 0 -> 15653 bytes | |||
| -rwxr-xr-x | 2606/CH8/EX8.9/ex8_9.sce | 56 |
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diff --git a/2606/CH8/EX8.9/ex8_9.jpg b/2606/CH8/EX8.9/ex8_9.jpg Binary files differnew file mode 100755 index 000000000..f13ae4e18 --- /dev/null +++ b/2606/CH8/EX8.9/ex8_9.jpg diff --git a/2606/CH8/EX8.9/ex8_9.sce b/2606/CH8/EX8.9/ex8_9.sce new file mode 100755 index 000000000..807399604 --- /dev/null +++ b/2606/CH8/EX8.9/ex8_9.sce @@ -0,0 +1,56 @@ +//Page Number: 8.11;
+//Example 8.9
+clc;
+
+//(a)Noise Figure
+//Given
+//Loss Fcator
+IL=1.5; //dB
+IL1=(10^(IL/10));
+
+//Noise figure
+F1=1.41;
+G1=1/F1;
+
+G2=10;
+GG2=(10*log10(G2)); //dB
+
+G3=100;
+GG3=(10*log10(G3)); //dB
+
+F2=2; //dB
+F3=2; //dB
+
+FF2=(10^(F2/10));
+FF3=(10^(F3/10));
+
+F=(F1+((FF2-1)/G1)+((FF3-1)/(G1*GG2)));
+FF=(10*log10(F));
+disp('dB',FF,'Noise figure of cascade');
+
+//(b) SNR at output
+//Given
+Pin=-90; //dBm
+Pout=Pin-IL+GG2+GG3; //dBm
+
+//Pn=Gcas*K*Te*B (cascade)
+K=1.38D-23;
+To=290; //Kelvin
+B=1D+8;
+Gcas=GG2+GG3-IL;
+Gcas1=(10^(Gcas/10));
+Pn=K*To*(F-1)*B*Gcas1; //W
+
+Pn1=(10*(log10(Pn/1D-3)));
+disp('dBm',Pn1,'Noise power output:');
+
+SNR=Pout-Pn1;
+disp('dB',SNR,'Signal to Noise ratio:');
+
+//(c)Best Noise Figure
+//G1 after G2 after IL
+
+Fcas=(FF2+((FF3-1)/G3)+((IL1-1)/(G3*G2)));
+Fcas1=(10*(log10(Fcas)));
+
+disp('dB',Fcas1,'Noise figure will be:');
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