2 files changed, 37 insertions, 0 deletions
diff --git a/3830/CH3/EX3.2/Ex3_2.sce b/3830/CH3/EX3.2/Ex3_2.sce
new file mode 100644
index 000000000..a16d30ee1
--- /dev/null
+++ b/3830/CH3/EX3.2/Ex3_2.sce
@@ -0,0 +1,18 @@
+// Exa 3.2
+
+clc;
+clear;
+
+// Given
+
+Noise = -90; // Minimum detectable signal (dbm)
+Ip = 300 ; // power level of third-order product(dbm)
+
+// Solution
+
+printf(' The expression for the dynamic range of the spectrum analyser = 2/3*(Ip-MDS) \n  So, by calculations :-\n');
+ 
+DR = 2/3*(Ip-Noise);
+printf('  Dynamic range %.1f dB \n',DR);
+
+// The answer provided in the textbook is wrong
diff --git a/3830/CH3/EX3.3/Ex3_3.sce b/3830/CH3/EX3.3/Ex3_3.sce
new file mode 100644
index 000000000..fb4e806cf
--- /dev/null
+++ b/3830/CH3/EX3.3/Ex3_3.sce
@@ -0,0 +1,19 @@
+// Exa 3.3
+
+clc;
+clear;
+
+// Given
+
+NF = 30; // Noise figure in dB
+BW = 1; // Bandwidth of 3 dB filter in kHz
+
+// Solution
+
+printf(' The noise level of the spectrum analyser is related to the noise figure and the IF bandwidth by the following equation - \n  MDS = -114 dbm + 10*log(BW/1MHz) + NF \n  so, by calculation :- ');
+
+MDS = -114 + 10*log10(BW*10^3/10^6)+NF;
+
+printf(' MDS = %d  dBm \n ' , MDS);
+
+// The answer provided in the textbook is wrong