O-TYPE TRAVELLING WAVE TUBE DESIGNING USING MATLAB

A PROJECT BY: ANKIT PANDEY (0703031013) ANKIT PRASAD (0703031014) ANKIT SAXENA (0703031015) ASHISH KUMAR (0703031023)

PROJECT GUIDE : Mrs. AMITA AGNIHOTRI

INTRODUCTION

TRAVELLING WAVE TUBE

A TRAVELLING-WAVE TUBE (TWT) IS AN ELECTRONIC DEVICE USED TO AMPLIFY RADIO FREQUENCY SIGNALS TO HIGH POWER.

THE BANDWIDTH OF A TWT RANGE FROM 300 MHZ TO 50 GHZ.

THE VOLTAGE GAIN OF THE TUBE CAN BE OF THE ORDER OF 70 DECIBELS

TYPE OF TRAVELLING WAVE TUBE

THERE ARE TWO TYPE OF TWT:

O-TYPE TWTM-TYPE TWT

O- STANDS FOR ORDINARY

M- STANDS FOR MAGNETIC

PRINCIPLE OF O-TYPE TWT

THE ESSENTIAL PRINCIPLE OF OPERATION OF A TWT LIES IN THE INTERACTION BETWEEN AN ELECTRON BEAM AND AN RF SIGNAL.

BASED UPON VELOCITY MODULATION TECHNIQUE

DEVICE STRUCTURE

TWT MAINLY CONSISTS OF FOLLOWING :

ELONGATED VACUUM TUBE WITH ELECTRON GUN

A FOCUSING ELECTRODE

A DIRECTIONAL COUPLER

A HELIX WIRE

MATLAB

MATLAB (matrix laboratory) IS A NUMERICAL COMPUTING ENVIRONMENT AND FOURTH-GENERATION PROGRAMMING LANGUAGE

DEVELOPED BY MATHWORKS

MATLAB ALLOWS MATRIX MANIPULATIONS

PLOTTING OF FUNCTIONS AND DATA

IMPLEMENTATION OF ALGORITHMS

CREATION OF USER INTERFACES

INTERFACING WITH PROGRAMS WRITTEN IN OTHER LANGUAGES INCLUDING C, C++ AND FORTRAN

PROJECT DESCRIPTIONTHIS PROJECT INVOLVES SOFTWARE DESIGNING OF AN O-TYPE TRAVELING WAVE TUBE USING MATLAB GIVING RESULTS:

THE CALCULATION OF THE TWT GAIN.

THE COMPARISON OF THE RESULTS OBTAINED WITH THOSE OF THE EXISTING ONES.

USES AND SCOPE

AS AMPLIFIERS IN SATELLITE TRANSPONDERS

IN RADAR

IN ELECTRONIC WARFARE

IN ELECTROMAGNETIC COMPATIBILITY TEST

IN COMMUNICATION

Phase 1: Resourse Gathering(25th sept 2010)Phase 2: Solving Differential Eqn(30th oct 2010)Phase 3: Programing by Matlab(15th jan 2011)Phase 4: Simulation using Tool Box(5th feb 2011)Phase 5: Testing of Design(20th feb 2011)Phase 6: Documentation(27th feb 2011)Project Completion:1st March 2011

Phases of Project

Phase 1: Ankit Pandey & Ankit PrasadPhase 2: All MembersPhase 3: Ankit pandey & Ashish KumarPhase 4: Ankit Saxena & Ankit PrasadPhase 5: Ankit PandeyPhase 6: All Members

Work Allotment

CONCLUSION

TWT HAVE HIGH POWER OUTPUT, HIGH GAIN, AND EASE OF OPERATION MAKE THEM THE IDEAL WAY TO RUN POWER AT MICROWAVE FREQUENCIES.

POWER AMPLIFICATION MAY RANGE FROM MILLIWATTS TO MEGAWATTS.

THANK YOU

ANY QUESTIONS AND SUGGESTIONS