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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 /2210/CH3/EX3.11 | |
| 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 '2210/CH3/EX3.11')
| -rwxr-xr-x | 2210/CH3/EX3.11/3_11.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/2210/CH3/EX3.11/3_11.sce b/2210/CH3/EX3.11/3_11.sce new file mode 100755 index 000000000..0e808c143 --- /dev/null +++ b/2210/CH3/EX3.11/3_11.sce @@ -0,0 +1,28 @@ +//Chapter 3, Problem 11, Figure 3.16(a), 3.18
+clc
+Zs=50+%i*0 //impedance in ohm
+Zl=100+%i*0 //impedance in ohm
+
+//using one quarter wave transformer in the circuit of figure 3.16(a)
+Z0=sqrt(Zs*Zl)
+
+//Use two quarter-wave transformers as in Figure 3.18
+Z0t=sqrt(Zl/Zs)
+Z0t2=60
+Z0t1=Z0t2*Z0t
+
+//using table 3.3
+x=[0.6,0.8,1.0,1.2,1.4]
+y=[-13.83,-19.28,-60,-19.28,-13.83]
+clf;
+x1=[0.6,0.8,1.0,1.2,1.4]
+y1=[-18.81,-32.09,-38.69,-32.09,-18.81]
+plot(x,y,".r")
+plot(x1,y1,".b")
+legend("one h/4","Two h/4")
+
+xtitle("reflection coefficient vs frequency","frequency (GHz)","Reflection coefficient (dB)");
+printf("(a) Matching network using one λ/4 transformer,\n\t Z0 = %.2f ohm\n\n",Z0)
+printf("(b) Matching network using two λ/4 transformers,\n Ratio of Z0t1 and Z0t2 = %.3f\n",Z0t)
+printf("If I choose a value of 60 ohm for Z0t2, then Z0t1 = %.2f ohm\n\n",Z0t1)
+
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