From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 25/CH4/EX4.1/4_1.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 25/CH4/EX4.1/4_1.sce

(limited to '25/CH4/EX4.1')

diff --git a/25/CH4/EX4.1/4_1.sce b/25/CH4/EX4.1/4_1.sce
new file mode 100755
index 000000000..2552cc333
--- /dev/null
+++ b/25/CH4/EX4.1/4_1.sce
@@ -0,0 +1,26 @@
+// example:-4.1,page no.-148.
+// program to find the cut off frequency fo the first four propagating modes.
+a=0.02286;b=0.01016;f=10*10^9;k=209.44;sigma=5.8*10^7;mue=4*%pi*10^-7;
+c=3*10^8;
+m=0;n=1;
+fc=(c/(%pi*2))*sqrt(((%pi*m)/a)^2+((%pi*n)/b)^2);
+fc=fc/(10^9);
+disp(fc,'cut-off frequency for TE01 mode in GHZ=')
+m=1;n=0;
+fc=(c/(%pi*2))*sqrt(((%pi*m)/a)^2+((%pi*n)/b)^2);
+fc=fc/(10^9);
+disp(fc,'cut-off frequency for TE10 mode in GHZ=')
+m=2;n=0;
+fc=(c/(%pi*2))*sqrt(((%pi*m)/a)^2+((%pi*n)/b)^2);
+fc=fc/(10^9);
+disp(fc,'cut-off frequency for TE20 mode in GHZ=')
+m=1;n=1;
+fc=(c/(%pi*2))*sqrt(((%pi*m)/a)^2+((%pi*n)/b)^2);
+fc=fc/(10^9);
+disp(fc,'cut-off frequency for TE11 mode in GHZ=')
+B=sqrt(k^2-(%pi/a)^2)  // for TE10 mode
+Rs=sqrt(((2*%pi*f)*mue)/(2*sigma));   // surface resistance.
+disp(Rs,'surface resistance in ohm=')
+ac=(Rs/(a^3*b*B*k*377))*((2*b*%pi^2)+(a^3*k^2))  //attenuation constant.
+ac=-20*(-ac)*log10(%e);
+disp(ac,'attenuation constant in dB/m=')
\ No newline at end of file
-- 
cgit