FOR RADIO FREQUENCY
By Arie Nurhasrie
1-1111-092
BACHELOR’S DEGREE in
MECHANICAL ENGINEERING – MECHATRONICS CONCENTRATION FACULTY OF ENGINEERING AND INFORMATION TECHNOLOGY
SWISS GERMAN UNIVERSITY EduTown BSD City
Tangerang 15339 Indonesia
August 2015
Revision after the Thesis Defense on August, 13th 2015
Arie Nurhasrie STATEMENT BY THE AUTHOR
I hereby declare that this submission is my own work and to the best of my knowledge, it contains no material previously published or written by another person, nor material which to a substantial extent has been accepted for the award of any other degree or diploma at any educational institution, except where due acknowledgement is made in the thesis.
Arie Nurhasrie
____________________________________________
Student Date
Revision after the Thesis Defense on August, 13th 2015
Approved by:
Erikson F. Sinaga, ST, M.Kom
____________________________________________
Thesis Advisor Date
Yunita Umniyati, PhD
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Thesis Co-Advisor Date
Dr. Ir. Gembong Baskoro, M.Sc
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Dean Date
Arie Nurhasrie ABSTRACT
IMPLEMENTING AN AUTOMATIC CONTROL SYSTEM ON LOOP AND SENSE ANTENNA TO IMPROVE THE QUALITY OF SIGNAL RECEPTION FOR
RADIO FREQUENCY
By Arie Nurhasrie
Erikson F. Sinaga, ST., M.Kom, Advisor Yunita Umniyati, PhD, Co-Advisor
SWISS GERMAN UNIVERSITY
This thesis project is focusing on implementing an automatic control system for the motor control system through electrical circuit designs. The types of antenna used for this project are loop and sense antenna. The electrical circuits are divided into radio receiver, phase comparator, and motor control circuit. A dc motor is used to rotate the movement of the antenna in two directions. The frequency tuned by radio receiver then as the antenna rotates, the incoming signal could be in phase or out of phase condition.
The signal coming intercepted by antenna and a reference voltage are the inputs compared in op-amp as voltage comparator. The two inputs of comparator phase may be added or subtracted according to condition of incoming signal. The output of comparator is connected to the base of NPN and PNP transistor on motor control circuit.
The dc motor is controlled to rotate clockwise or counter-clockwise.
Keywords: automatic system, loop and sense antenna, direction finders, radio frequency, phase detector.
Arie Nurhasrie
© Copyright 2015 by Arie Nurhasrie All rights reserved
Arie Nurhasrie DEDICATION
I dedicate this work to my family, friends, and the “Animals”.
Arie Nurhasrie ACKNOWLEDGEMENTS
First of all, I would like to thank Allah SWT for being my strength and guide in the process of this thesis. Without Him, I would not have had the wisdom or physical ability to do so.
I would like to thank my family who always supports and encourage me during hardship time of this thesis and helping me to be able to finish this thesis. Thank you for always support and guide me in my life.
I would like to express my biggest gratitude to Mr. Martinus Sudibyo for motivation and encouragement during the process of this thesis. Thank you for always spending your time to help and teach me.
I would like to express my gratitude to my thesis advisor, Erikson F. Sinaga, ST, M.Kom, and my thesis co-advisor, Yunita Umniyati, PhD, for the help and guidance.
Thank you for helping me to be able to finish this thesis work.
My greatest gratitude for my friends and colleagues that support me for the last 4 years.
This 4 years attending university will not be the same without them. Special thanks to Mr. Alvin Varianto S., Mr. Andresson Dharma, Mr. Bayu Budiman R., Mr. Besaliel Christianto G., Mr. Dipo Dirgantara, Mr. Enzo Oestanto, Mr. Franklin, Mr. Ing Irving Adi Nugraha I., Mr. Mochammad Rizky D. S., Mr. Nicholas Iskandar, Mr. Rubby Gemini, Mr. Suryanto W. M., and Mr. Vincent Tjandra for being the best.
Arie Nurhasrie TABLE OF CONTENTS
Page
STATEMENT BY THE AUTHOR ... 2
ABSTRACT ... 3
DEDICATION ... 5
ACKNOWLEDGEMENTS ... 6
TABLE OF CONTENTS ... 7
LIST OF FIGURES ... 9
LIST OF TABLES ... 11
CHAPTER 1 – INTRODUCTION ... 12
1.1 Background ... 12
1.2 Thesis Objectives ... 12
1.3 Thesis Scope and Limitation ... 13
1.4 Thesis Organization ... 13
CHAPTER 2 - LITERATURE REVIEW ... 14
2.1 Introduction ... 14
2.2 Antenna ... 14
2.2.1 Loop and Sense Antenna ... 16
2.3 Radio Frequency ... 17
2.4 Transformer MF (Medium Frequency) ... 18
2.5 Brushed DC Motor ... 20
2.6 Operational Amplifier as Voltage Comparator ... 22
2.7 Phase Detector ... 23
CHAPTER 3 – METHODOLOGY ... 26
3.1 Introduction ... 26
3.2 General System Overview ... 26
3.3 Electrical System Design ... 29
3.3.1 Radio Receiver Circuit ... 30
3.3.2 Phase Detector Design ... 31
Arie Nurhasrie
3.3.4 Motor Control Circuit Design ... 33
3.3.5 Power Supply ... 35
3.4 Actuator Design ... 37
3.4.1 DC Motor ... 37
CHAPTER 4 – RESULTS AND DISCUSSIONS ... 38
4.1 Overview ... 38
4.2 General System Test ... 38
4.3 Electrical Test ... 39
4.3.1 Power Supply Test ... 39
4.3.2 Comparator Test ... 42
4.3.3 Transformer MF (Medium Frequency) Test ... 43
4.3.4 Phase Detector Test ... 45
4.3.4.1 Phase Detector: Antenna Simulator ... 46
4.3.5 Motor Control Test ... 52
4.4 Actuator Test ... 55
4.4.1 Japan Servo DC Motor Test ... 55
CHAPTER 5 – CONCLUSIONS AND RECOMMENDATIONS ... 56
5.1 Conclusions ... 56
5.2 Recommendations ... 56
GLOSSARY ... 57
REFERENCES ... 58
APPENDIX A - DATASHEET ... 60
APPENDIX B – BILL OF MATERIALS ... 87
CURRICULUM VITAE ... 88