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

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 1979/CH8/EX8.5/Ex8_5.sce | 46 ++++++++++++++++++++++++++++++++++++++++++++++
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+//chapter-8 page 339 example 8.5
+//==============================================================================
+clc;
+clear;
+
+//For a 2 cavity klystron amplifier
+V0=1200;//Beam voltage in V
+I0=0.028;//Beam current in A
+f=8*10^9;//frequency in Hz
+d=0.001;//gap spacing in either cavity in m
+L=0.04;//spacing between centers of cavities in m
+Rsh=40000;//Effective shunt impedance in ohms
+J1=0.582;//value of J1(X)
+X=1.841;//bunching parameter
+
+//CALCULATION
+w=2*(%pi)*f;//angular frequency in rad
+v0=0.593*10^6*sqrt(V0);//velocity of electron in m/sec
+Vomax=((3.68*V0*v0)/(w*L));//max output power in V
+tg=(w*d)/v0;//avg gap transit angle in rad
+Tg=tg*(180/(%pi));
+Bi=(sind(Tg/2))/(tg/2);//beam coupling coefficient 
+Bo=Bi;//output cavity coupling coefficient 
+Vimax=Vomax/Bi;//The input microwave voltage in order to generate maximum output voltage in V
+t0=w*L/v0;//transit angle in rad
+R0=V0/I0;//impedance in ohms
+Av=((Bo^2*J1*t0*Rsh)/(R0*X));//Voltage gain 
+I2=2*I0*J1;
+V2=Bo*I2*Rsh;
+disp('neglecting beam loading');
+Eff=0.58*(V2/V0)*100;//Efficiency in %
+G0=1/R0;
+GB=(G0/2)*(Bo*(Bo-cos(Tg/2)));//Beam loading conductance in mhos
+RB=(1/GB)/1000;//Beam loading resistance in Kohms
+disp('Beam loading resistance in Kohms is');
+disp(RB);
+disp('The value 73 kohms is very much comparable to Rsh and cannot be neglected because Tg is quite high');
+
+//OUTPUT
+mprintf('\nThe input microwave voltage in order to generate maximum output voltage is Vimax=%2.2f V \nThe voltage gain is Av=%2.2f percentage \nBeam loading conductance is GB=%1.10f mhos',Vimax,Av,GB);
+
+//=========================END OF PROGRAM===============================
+
+
+
+
-- 
cgit