1 files changed, 22 insertions, 0 deletions
diff --git a/998/CH29/EX29.90/Ex90.sce b/998/CH29/EX29.90/Ex90.sce
new file mode 100755
index 000000000..148a61584
--- /dev/null
+++ b/998/CH29/EX29.90/Ex90.sce
@@ -0,0 +1,22 @@
+//Ex:90
+clc;
+clear;
+close;
+t_a=60;// antenna noise temp in k
+l1=1.075;//loss in waveguide in K
+t_o=290;// in K
+t_e2=160;// in K;
+t_e3=10000;// in k
+G2=10^6;// low noise ampr gain
+t_eq=(l1-1)*t_o+(t_e2*l1)+(t_e3*l1)/G2;// in K
+t_s1=t_a+t_eq;// in k
+T_s1=10*log(t_s1)/log(10);// in db
+G=66;// in db
+g_t1=G-T_s1;//G/T ratio in db/K
+t_s2=(t_a*G2)/l1+(l1-1)*(t_o*G2)/l1+(t_e2*G2)+t_e3;
+T_s2=10*log(t_s2)/log(10);// in db
+G_2=66-0.3+60;// in db
+g_t2=G_2-T_s2;//G/T ratio in db/K
+printf("The G/T ratio=%f db/K", g_t1);
+printf("\n The G/T ratio=%f db/K", g_t2);
+printf("\n Both the G/T ratio are same");
+\ No newline at end of file