The design and construction of mini radio broadcast transmitter and audio console using frequency modulation (fm) with power rating of 1 watt
Table Of Contents
- <p> </p><p>Title page</p><p>Approval page</p><p>Declaration </p><p>Dedication</p><p>Acknowledgement</p><p>Abstract</p><p>Table of content</p><p>List of diagram/figures</p><p>Introduction</p><p><b>
Chapter ONE
INTRODUCTION
- </b></p><p><b>TRANSMITTER FUNDAMENTALS AND TYPES OF MODULATION</b></p><p>
- 1.1Transmitters fundamental</p><p>
- 1.2Modulations (analog and digital)</p><p>
- 1.3Amplitude modulation</p><p>
- 1.4Frequency modulation</p><p>
- 1.5Method of fm</p><p>
- 1.6Modulation overview</p><p>
- 1.61 Basic reactance modulator</p><p>
- 1.62Theory of reactance modulator </p><p>
- 1.70Types of reactance modulator</p><p>1.
- 7.1Varacto diode modulator</p><p><b>
Chapter TWO
LITERATURE REVIEW
- </b></p><p><b>AMPLIFIER EXPLANATIONS</b></p><p>
- 2.10Amplifier explanations</p><p>
- 2.20Class of amplifier</p><p>
- 2.21Class of amplifier</p><p>
- 2.22Class B amplifier </p><p>
- 2.23Class AB amplifier</p><p>
- 2.24Class c amplifier</p><p>
- 2.30Oscillators</p><p>
- 2.31Types of oscillators </p><p><b>
Chapter THREE
RESEARCH METHODOLOGY
- .0 </b></p><p><b>TRANSMISSION LINE</b></p><p>
- 3.10FUNDAMENTALS</p><p>
- 3.30Types of transmission lines</p><p>
- 3.31Rectangular wave guide</p><p>
- 3.32Circular wave guide </p><p>
- 3.33Ridge Wave guide</p><p>
- 3.34Optical fiber</p><p><b>
Chapter FOUR
DATA PRESENTATION AND ANALYSIS
- </b></p><p><b>POWER SUPPLY</b></p><p>
- 4.1Stages of power supply</p><p>
- 4.2 Audio console power supply</p><p>
- 4.3Transmitter power supply design</p><p><b>
Chapter FIVE
SUMMARY, CONCLUSION AND RECOMMENDATIONS
- </b></p><p><b>AUDIO CONSOLE UNIT</b></p><p>
- 5.1Audio console transducer</p><p>
- 5.2Audio console pre-amp stage</p><p>
- 5.3Audio console power amp stage</p><p>
- 5.4Audio console control/mixer</p><p>
- 5.5The operation of the audio console</p><p><b>CHAPTER 6 </b></p><p><b>TRANSMITTER AND ANTENNA DESIGN</b></p><p>
- 6.1Oscillator stage design for transmitter</p><p>
- 6.2Buffer/power amplifier design</p><p>
- 6.3Tank circuit design</p><p>
- 6.4Antenna design</p><p>
- 6.41Types of antenna and application</p><p>
- 6.42 Antenna matching network</p><p>
- 6.43 Antenna design</p><p><b>CHAPTER 7 </b></p><p><b>COMPONENT DESCRIPTION AND CONSTRUCTION </b></p><p>
- 7.10 LM 386-power amplifier</p><p>
- 7.11Capacitor</p><p>
- 7.12Transistor</p><p>
- 7.2 Specification</p><p>
- 7.3Construction and soldering</p><p>
- 7.4Precautions taken during soldering</p><p>
- 7.5Troubleshooting</p><p>
- 7.6Transmitter strip board</p><p>
- 7.7Audio console strip board</p><p><b>RECOMMENDATION</b></p><p><b>CONCLUSION</b></p><p><b>REFERENCE:</b></p><p><b>LIST OF FIGURES AND DIAGRAM</b></p><p>Fig
- 1.4 Information signal</p><p>Fig
- 1.62 Reactance modulator circuit</p><p>Fig
- 1.7 Reactance modulator elements</p><p>Fig
- 1.7Diagram of transistor reactance modulator</p><p>Fig
- 1.8Varactor diode modulator</p><p>Fig
- 2.1 Amplifier configuration</p><p>Fig
- 2.21Class a wave form representation</p><p>Fig
- 2.22Voltage current characteristic of class b amp</p><p>Fig
- 2.3Block diagram of an oscillator</p><p>Fig
- 3.2Balanced line</p><p>Fig
- 3.22Unbalanced wire – line</p><p>Fig
- 3.3 Method of wave propagation in a waveguide</p><p>Fig
- 3.31Te10 mode in a rectangular waveguide</p><p>Fig
- 3.32 Circular waveguide</p><p>Fig
- 3.33 Rectangular waveguide/ ridge</p><p>Fig
- 3.4Optical fiber cable</p><p>Fig
- 4.1Power supply block diagram</p><p>Fig
- 4.2Audio console power supply regulator</p><p>Fig
- 4.3Transmitter power supply </p><p>Fig
- 5.2 Audio console pre-amp</p><p>Fig
- 5.3Audio console power amp</p><p>Fig
- 5.4Audio console control/ mixer</p><p>Fig
- 6.1Oscillator stage</p><p>Fig
- 6.2Buffer amp/power amp</p><p>Fig
- 6.3Tank circuit</p><p>Fig
- 6.42Antenna matching network</p><p>Fig
- 7.1LM 386 (power amp)</p><p>Fig
- 7.11Capacitor</p><p>Fig
- 7.12Transistor</p><p>Bill of quantity </p><p>Block diagram of audio console</p><p>Block diagram of transmitter</p><p>Audio console schematic</p><p>Transmitter schematic</p><p>Transmitter casing </p><p>Audio console casing</p> <br><p></p>
Project Abstract
<p> </p><p>The early transmitter for radio broadcasting is so big and bulky that they do occupy numerous spaces. The circuitries are mainly designed with valves, which are big in sizes.</p><p> With the advent of semiconductor materials such as transistors electronic equipment are now becoming miniaturized such that small transmitters are now becoming handy and compact.</p><p> In line with this we choose to design a complete radio broadcasting equipment tat is compact and existence of semiconductor materials.</p><p> The system units are of two categories namely audio console for the processing and mixing of musicals is basically a condenser microphone. </p><p> The transmitter unit is where the center frequency is provided. All these were designed to be in compact and small manner. This project is aimed at serving a community using a small and compact radio broadcasting equipment with a power watt of 1 watt a community of 1 kilometer in radius should be covered comfortable and the audio production very clear unlike the common noisy FM microphone project.</p><p> </p> <br><p></p>Project Overview
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