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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 /608/CH41/EX41.12/41_12.sce | |
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Diffstat (limited to '608/CH41/EX41.12/41_12.sce')
| -rwxr-xr-x | 608/CH41/EX41.12/41_12.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/608/CH41/EX41.12/41_12.sce b/608/CH41/EX41.12/41_12.sce new file mode 100755 index 000000000..b0864b6be --- /dev/null +++ b/608/CH41/EX41.12/41_12.sce @@ -0,0 +1,21 @@ +//Problem 41.12: A symmetrical pi-attenuator pad has a series arm of resistance 1000 ohm and shunt arms each of 500ohm . Determine (a) its characteristic impedance, and (b) the insertion loss (in decibels) when feeding a matched load..
+
+//initializing the variables:
+R1 = 1000; // in ohm
+R2 = 500; // in ohm
+I1 = 1; // in amperes (lets say)
+
+//calculation:
+//characteristic impedance of a symmetrical attenuator
+R0 = (R1*(R2^2)/(R1 + 2*R2))^0.5
+//current Ix
+Ix = (R2/(R2 + R1 + (R2*R0/(R2 + R0))))*I1
+//current I2
+I2 = (R2/(R2 + R0))*Ix
+ri = I1/I2; // retio of currents
+//insertion loss
+il = 20*log10(ri)
+
+printf("\n\n Result \n\n")
+printf("\n characteristic impedance is %.0f ohm",R0)
+printf("\n insertion loss is %.2f dB",il)
\ No newline at end of file |