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diff --git a/761/CH16/EX16.4/16_4.sce b/761/CH16/EX16.4/16_4.sce
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+clc;
+//page no 571
+//prob no. 16.4
+//A dipole antenna with efficency=85% given
+n=0.85;D_dBi=2.14;//Directivity in dBi
+//Determination of gain in dB
+D=10^(D_dBi/10);
+G=D*n;//Determination of gain
+G_dBi=10*log10(G);//Converting to dBi
+disp('dBi',G_dBi,'The gain is');
+\ No newline at end of file