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TITLE PAGE

DESIGN AND CONSTRUCTION OF AN FM RECEIVER

BY

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EE/H2013/01430
DEPARTMENT OF ---
INSTITUTE OF ---

DECEMBER,2018

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APPROVAL PAGE

This is to certify that the research work, "design and construction of an fm receiver" by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on Electrical and Electronics Engineering has been approved.

By
Dr. ---                                           Dr. ---
Supervisor                                                  Head of Department.
Signature……………….                           Signature……………….        

……………………………….
Dr. ---
External Invigilator

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DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

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ACKNOWLEDGEMENT

The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.

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Radio receiver design includes the electronic design of different components of a radio receiver which processes the radio frequency signal from an antenna in order to produce usable information such as audio. This project only concentrates on fm receiver design. The complexity of a modern receiver and the possible range of circuitry and methods employed are more generally covered in electronics and communications engineering. The term fm receiver is understood in this project to mean any device which is intended to receive a radio signal in order to generate useful information from the signal. This F.M. receiver is designed using single IC used to receive frequency range of 88 MHz to 108 MHz in F.M. band,  it is built around IC TEA5591.

 

 

TABLE OF CONTENTS

 TITLE PAGE

APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
TABLE OF CONTENT

CHAPTER ONE

• INTRODUCTION
• BACKGROUND OF THE PROJECT
• PROBLEM STATEMENT
• AIM/OBJECTIVE OF THE PROJECT
• SCOPE OF THE PROJECT
• SIGNIFICANCE OF THE PROJECT
• APPLICATION OF THE PROJECT
• LIMITATION OF THE PROJECT
• DEFINITION OF TERMS
• PROJECT ORGANISATION

CHAPTER TWO

LITERATURE REVIEW

2.0      LITERATURE REVIEW
2.1      REVIEW OF VAROUS TYPES OF RADIO RECEIVER
2.2     HISTORICAL BACKGROUND OF RADIO

CHAPTER THREE

3.0      METHODOLOGY

CHAPTER THREE
3.0     CONSTRUCTION
3.2      BLOCK DIAGRAM OF THE SYSTEM
3.3      DESCRIPTION OF SOLAR INVERTER UNITS
3.4      SYSTEM CIRCUIT DIAGRAM
3.5      CIRCUIT OPERATION
3.6      DESCRIPTION OF COMPONENTS USED
CHAPTER FOUR
RESULT ANALYSIS
4.0      CONSTRUCTION PROCEDURE AND TESTING
4.1      CASING AND PACKAGING
4.2      ASSEMBLING OF SECTIONS
4.3      TESTING OF SYSTEM OPERATION
4.4      COST ANALYSIS
CHAPTER FIVE     
5.0      CONCLUSION
5.1      RECOMMENDATION
5.2      REFERENCES

 

 

CHAPTER ONE
1.0                                                          INTODUCTION
1.1                                           BACKGROUND OF THE STUDY
An fm receiver (commonly also called a radio) is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation.
The information produced by the receiver may be in the form of sound. A radio receiver may be a separate piece of electronic equipment, or an electronic circuit within another device.
In consumer electronics, the terms fm receiver are often used specifically for receivers designed to reproduce the audio (sound) signals transmitted by radio broadcasting stations, historically the first mass-market commercial radio application.

1.2                                                  PROBLEM STATEMENT
The design of fm receiver came to overcome problems and disadvantages that are associated with ancient radio receiver (am receiver) such as:

• Fm receiver has a high band width than the old radio receiver
• It is portable than the old radio
• It has clear reception than the old radio
• It has Wave at higher frequencies than can carry more data than waves at low frequency.
• Smaller geographical interference between neighboring stations than the old radio receiver.
• Less radiated power.

1.3                                             OBJECTIVE OF THE PROJECT
The objective of this work is to design receives radio frequency signal from an antenna in order to produce usable information such as audio. It is designed using single IC used to receive frequency range of 88 MHz to 108 MHz in F.M. band,  it is built around IC TEA5591.

1.4                                          SCOPE OF THE OF THE PROJECT
An fm receiver consisting of an antenna, a variable inductor, and filter capacitors. fm receiver radio uses no active parts: it is powered only by the radio signal itself, whose detected power feeds headphones in order to be audible at all. In order to achieve even a minimal sensitivity, a fm receiver is limited to low frequencies using a large antenna (usually a long wire). It relies on detection using some sort of semiconductor diode such as the original discovered long before the development of modern semiconductors.
To operate the radio receiver, potentiometer VR1 must first be advanced slowly (towards the end of the track connected to battery positive) until, at about the half-way point, a sudden slight increase in background noise will be heard, indicating the onset of oscillation. It then should be backed off, very slowly, until oscillation just stops; it then should be possible to tune in some stations.
The correct frequency range of 87 MHz to 108 MHz can be obtained by adjusting VC2 at the high frequency (108 MHz) and slightly stretching or squeezing together the turns of coil L1 at the end (87 MHz).

1.5                                         SIGNIFICANCE OF THE PROJECT
This fm receiver includes simple transistor radios that are typically monoaural and receive the FM. This device is simple, easy-to-make.
Radio is a popular medium for people at home or on the move. Radio remains a strong advertising medium with continued growth in advertising revenue, according to the Radio Advertising Bureau. The Bureau’s membership includes more than 6,000 radio stations in the U.S. offering advertisers a choice of local, regional and national coverage. The availability of radio on mobile devices such as smart phones with Internet connectivity gives advertisers access to a new mobile audience, as well as the traditional audience at home, at work or in cars.

Local

For small businesses, radio represents a powerful local medium. Local radio attracts an audience that wants to keep up with local news, events and personalities. Businesses with a focus on local audiences led the growth in spot radio advertising in the third quarter of 2011, according to the Radio Advertising Bureau. Auto dealers and restaurants took the first two places with entertainment venues and home furnishings figuring in the top six.

Coverage

Radio enables small business to match advertising campaigns with their geographical markets. Local businesses can use local or regional stations to reach local customers, while small businesses targeting national markets can advertise on national radio. Using national radio in conjunction with an e-commerce website means that small businesses do not have to build a network of outlets to reach a national audience.

Special Interests

Radio stations target different audiences with their programming schedules, enabling advertisers to target special interest groups or different age groups with minimal waste. Different music programs, for example, give you the choice of targeting a teenage audience, an older audience with an interest in classical music or cultural events, or a general audience.

Cost

Radio advertising is a low-cost medium compared with rates for reaching similar audiences by press or television advertising. Rates vary by region with higher costs for radio stations that cover densely populated metropolitan areas. Production costs are lower than those of other media. You can create simple radio ads yourself or use a production company to create more complex ads. Some radio stations offer free or low-cost production services to advertisers.

Trust

Radio advertisements reach an audience that trusts the medium for information such as news, weather and sports reports. Radio also plays an important emotional role in listeners’ lives, according to the UK Radio Advertising Bureau. People listen to radio when they are getting ready in the morning, doing household chores or traveling, creating an advertising environment that other media cannot match

Attention

The emotional strength of radio can also be a disadvantage for advertisers. Radio can provide a background sound for people who are working, traveling or carrying out chores, which means they are only paying partial attention to content and may miss advertising messages. Advertisements that use only voice or voice and music can blend in to general program content, minimizing their impact.

1.6                                           LIMITATION OF THE PROJECT

• Insensitive, it needs a strong RF signal and/or a long-wire antenna to operate.
• Poor selectivity since it only has one tuned circuit.
• Low battery can affect the frequency
• The oscillator is adjusted between 87 and108 MHz with C5. Because of the synchronization, the oscillator output will have the same frequency deviation as the received signal from the fm antenna.

1.7                                                  DEFINITION OF TERMS
Amplitude Modulation (AM): A method of radio modulation that varies carrier wave amplitude. It works by varying the strength (amplitude) of the carrier in proportion to the waveform being sent, which contrasts with Frequency Modulation (FM), where the frequency of the carrier signal is varied. AM frequency range is 530 to 1710 kHz.
Audio Processor: Active device requiring power that increases broadcast quality, i.e., adds compression and limiting, thereby boosting loudness and functional range of broadcasts.
Direct Current (DC): The unidirectional flow of electric charge produced by sources such as batteries and solar cells.
Frequency Modulation (FM): A method of radio modulation in which the frequency of the carrier wave are varied. FM frequency range is 88 to 108 MHz
Hertz (Hz): Unit of frequency in the International System of Units (SI) defined as 1 cycle per second, named for Heinrich Hertz, the first person to provide conclusive proof of the existence of electromagnetic waves.
Modulation: In electronics and telecommunications, the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted. The information may take the form of audio or data.
Radio Frequency (RF): A rate of oscillation that corresponds to the frequency of radio waves and the alternating currents that carry radio signals

1.8                                       PROJECT WORK ORGANISATION
The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project work, the project is organized sequentially as follows:
Chapter one of this work is on the introduction. In this chapter, the background, significance, objective limitation and problem of the project work were discussed.
Chapter two is on literature review of the study. In this chapter, all the literature pertaining to this work was reviewed.
Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.
Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.
Chapter five is on conclusion, recommendation and references.

CHAPTER ONE: The complete chapter one of “design and construction of an fm receiver” is available. Order full work to download. Chapter one of “design and construction of an fm receiver”consists of the literature review. In this chapter all the related work on“design and construction of an fm receiver” was reviewed.

CHAPTER TWO: The complete chapter two of “design and construction of an fm receiver” is available. Order full work to download. Chapter two of “design and construction of an fm receiver” consists of the literature review. In this chapter all the related work on “design and construction of an fm receiver” was reviewed.

CHAPTER THREE: The complete chapter three of “design and construction of an fm receiver” is available. Order full work to download. Chapter three of “design and construction of an fm receiver” consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of “design and construction of an fm receiver” is available. Order full work to download. Chapter four of “design and construction of an fm receiver” consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of “design and construction of an fm receiver” is available. Order full work to download. Chapter five of “design and construction of an fm receiver” consist of conclusion, recommendation and references.

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