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Radio waves are electromagnetic waves that are transmitted and received using oscillating electric and magnetic fields, with the frequency determining what they can be used for such as telecommunications. Mobile phones send and receive radio signals from the nearest base station, which then transmit the information through phone cables or high frequency radio links to other devices and networks. Base stations link mobile phones and landlines to transmit voices and music by converting radio signals into vibrations that the ear can interpret.
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Radio communication and the mobile phone
Radio waves are electromagnetic radiation that can carry embedded codes or messages through modulation. For mobile phones, radio frequency signals are transmitted between phones and the nearest base station, which then connects to the telephone network via cables or higher frequency links. Mobile networks work by dividing coverage into hexagonal cells with overlapping coverage from base stations, allowing handovers between cells as the user moves.
Radio Communication
Mobile phones transmit and receive radio frequency signals or radio waves to communicate. Radio waves have the longest wavelengths in the electromagnetic spectrum and are emitted from sources like mobile phones, TVs and radios. Frequencies are measured in hertz and different frequencies are used for various telecommunications. Mobile phones send signals to the nearest base station which are then linked to phone networks. Base stations provide radio coverage in geographical cells that overlap to ensure continuous coverage.
Radio communication and the mobile phone
Mobile phones transmit and receive signals using radio waves or electromagnetic waves between frequencies of 872-960 MHz, 1710-1872 MHz and 1920-2170 MHz. A mobile phone sends and receives information via radio communication with the nearest base station, which are connected to the network via telephone cables or higher frequency radio links. Each base station provides radio coverage to a geographical area known as a cell.
Radio communication and the mobile phone
Radio communication has been used for over a hundred years, with Guglielmo Marconi and Alexander Popov contributing significantly to its invention and demonstration in the late 19th century. Radio waves are a type of electromagnetic radiation that can be artificially generated for communication purposes, including radio broadcasting and mobile phone networks. Mobile phones use radio frequency signals transmitted between the phone and nearest base station, with base stations linking to the telephone network and allowing handoff between cells as the user moves around.
Radio communication and the mobile phone
Radio communication has been used for over 100 years since Marconi's first transmission in 1895. It works by transmitting frequency waves called carrier waves that can be modulated to convey information by varying aspects like amplitude or frequency. Mobile phones use electromagnetic waves to communicate with nearby base stations via radio signals, which are then transferred through telephone networks. Base stations have overlapping cells to ensure coverage, with sizes varying based on terrain and needed network capacity.
Radio Communication and the Mobile Phone
Radio communication has been used for over a hundred years since Marconi's first transmission in 1895, while mobile phone use is more recent, with 60% of the UK population now using them. Radio waves are electromagnetic waves that transmit signals for radio, TV, and mobile phones by oscillating electric and magnetic fields at different frequencies. Mobile phones send and receive radio frequency signals through the nearest base station, which are connected to transmit signals to the telephone network. Base stations provide radio coverage to geographical cells and hand over communication between cells as the mobile phone user moves.
Radio communication and the mobile phone
Radio waves transmit various types of information such as music, conversations, pictures, and data over long distances. They are used not only for radio but also for other electronics like TVs, mobile phones, Bluetooth, and microwaves. Amplitude modulation is a technique used to transmit information via radio carrier waves by varying the strength of the transmitted signal based on the information being sent. Mobile phones use radio communication by transmitting and receiving radio frequency signals between the phone and nearby base stations, which are connected to each other and the telephone network to track calls and transfer them as users move between different coverage areas.
Radio Communication and the Mobile Phone
Radio waves are used to transmit signals between mobile phones and base stations. Mobile phones use radio frequencies between 872-960MHz and 1710-1875MHz to communicate with nearby base stations. Base stations are connected to each other and route calls as the caller moves between different cell sites, which provide radio coverage to a geographical area. The size of each cell depends on terrain, frequency band used, and needed call capacity in the area.
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Radio communication and the mobile phone
Radio waves are electromagnetic radiation that can carry embedded codes or messages through modulation. For mobile phones, radio frequency signals are transmitted between phones and the nearest base station, which then connects to the telephone network via cables or higher frequency links. Mobile networks work by dividing coverage into hexagonal cells with overlapping coverage from base stations, allowing handovers between cells as the user moves.
Radio Communication
Mobile phones transmit and receive radio frequency signals or radio waves to communicate. Radio waves have the longest wavelengths in the electromagnetic spectrum and are emitted from sources like mobile phones, TVs and radios. Frequencies are measured in hertz and different frequencies are used for various telecommunications. Mobile phones send signals to the nearest base station which are then linked to phone networks. Base stations provide radio coverage in geographical cells that overlap to ensure continuous coverage.
Radio communication and the mobile phone
Mobile phones transmit and receive signals using radio waves or electromagnetic waves between frequencies of 872-960 MHz, 1710-1872 MHz and 1920-2170 MHz. A mobile phone sends and receives information via radio communication with the nearest base station, which are connected to the network via telephone cables or higher frequency radio links. Each base station provides radio coverage to a geographical area known as a cell.
Radio communication and the mobile phone
Radio communication has been used for over a hundred years, with Guglielmo Marconi and Alexander Popov contributing significantly to its invention and demonstration in the late 19th century. Radio waves are a type of electromagnetic radiation that can be artificially generated for communication purposes, including radio broadcasting and mobile phone networks. Mobile phones use radio frequency signals transmitted between the phone and nearest base station, with base stations linking to the telephone network and allowing handoff between cells as the user moves around.
Radio communication and the mobile phone
Radio communication has been used for over 100 years since Marconi's first transmission in 1895. It works by transmitting frequency waves called carrier waves that can be modulated to convey information by varying aspects like amplitude or frequency. Mobile phones use electromagnetic waves to communicate with nearby base stations via radio signals, which are then transferred through telephone networks. Base stations have overlapping cells to ensure coverage, with sizes varying based on terrain and needed network capacity.
Radio Communication and the Mobile Phone
Radio communication has been used for over a hundred years since Marconi's first transmission in 1895, while mobile phone use is more recent, with 60% of the UK population now using them. Radio waves are electromagnetic waves that transmit signals for radio, TV, and mobile phones by oscillating electric and magnetic fields at different frequencies. Mobile phones send and receive radio frequency signals through the nearest base station, which are connected to transmit signals to the telephone network. Base stations provide radio coverage to geographical cells and hand over communication between cells as the mobile phone user moves.
Radio communication and the mobile phone
Radio waves transmit various types of information such as music, conversations, pictures, and data over long distances. They are used not only for radio but also for other electronics like TVs, mobile phones, Bluetooth, and microwaves. Amplitude modulation is a technique used to transmit information via radio carrier waves by varying the strength of the transmitted signal based on the information being sent. Mobile phones use radio communication by transmitting and receiving radio frequency signals between the phone and nearby base stations, which are connected to each other and the telephone network to track calls and transfer them as users move between different coverage areas.
Radio Communication and the Mobile Phone
Radio waves are used to transmit signals between mobile phones and base stations. Mobile phones use radio frequencies between 872-960MHz and 1710-1875MHz to communicate with nearby base stations. Base stations are connected to each other and route calls as the caller moves between different cell sites, which provide radio coverage to a geographical area. The size of each cell depends on terrain, frequency band used, and needed call capacity in the area.
Radio communication and the mobile phone
Radio waves are electromagnetic waves that transmit signals between 30 kHz and 300 GHz, and are used to carry information via processes like amplitude modulation which alters the carrier wave. Mobile phones use radio waves to send signals to the nearest base station at radio frequencies, which then links the call to other networks, allowing mobile communication provided there are sufficient base stations. Radio communication requires a transmitter to produce a carrier wave that can be modulated to convey information across distances via radio frequencies.
Radio communication presentation
Radio waves have been used for communication for over a hundred years. Guglielmo Marconi and Nikola Tesla are considered the fathers of radio communication, with Marconi transmitting the first radio signal across the Atlantic. A mobile phone network uses radio waves to transmit signals between phones and base stations, which are connected to the wired telephone network. When a call is made, the phone sends a radio signal to the nearest base station, which routes the call through telephone cables or additional radio links to other stations and ultimately the destination phone. Base stations provide radio coverage to a geographical cell, and cells overlap to ensure users remain in contact with a station.
Radio communication and the mobile phone
Radio communication was pioneered by Marconi in 1895 and led to the development of mobile phones over a century later. The document discusses how radio waves are used to transmit information via modulation of electromagnetic carrier waves between mobile phones and cellular towers. It explains how amplitude modulation works and how mobile networks divide coverage into cells served by base stations to allow handoff between areas as users move around.
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Radio uses radio waves to transmit information by modulating properties of electromagnetic waves like amplitude, frequency, and phase. Radio waves are a type of electromagnetic radiation with wavelengths longer than infrared light. A transmitter generates radio frequency alternating current to produce radio waves, while a radio receiver receives radio waves and converts the information to a usable form using an antenna. Frequency refers to the number of cycles per second in alternating current, and the electromagnetic spectrum includes all known frequencies and wavelengths of photons.
Radio Communication and the Mobile Phone
Radio waves are used to transmit signals between mobile phones and base stations. Mobile phones operate within specific frequency ranges, such as 872-960MHz and 1710-1875MHz. When a call is made, the mobile phone sends and receives radio signals from the nearest base station. Base stations are connected to each other and route calls as the user moves between different cellular areas covered by base stations. The size of each cellular area depends on terrain, frequency band, and call capacity needs in the area.
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Radio waves are electromagnetic waves that can travel through vacuum or other mediums. They have frequencies between 30 kHz to 300 GHz and wavelengths from 1-1000 meters. Radio waves are used for radio, television, phones and other communication technologies because they can travel long distances by reflecting off the ionosphere. They are generated by electric charges accelerated through conductor wires using an oscillator circuit. Common types are AM, FM, and newer digital radio technologies. Radio waves are essential for wireless information transmission.
Radio communication
Radio communication uses radio waves to transmit signals through modulation of a carrier wave. The two pioneers of radio communication are Guglielmo Marconi, who first transmitted a radio signal across the Atlantic, and Nikola Tesla, who first developed a way to transmit radio signals. Radio waves carry signals for technologies like radio, television, and cellular phones and different frequency bands are used to avoid signal interference. Modulation methods include amplitude modulation, which varies the amplitude of the carrier wave, and frequency modulation, which varies the frequency.
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Radio waves transmit information such as television, internet, and music through invisible electromagnetic waves that are received by antennas and decoded into various media. Radios have a transmitter that encodes sound into sine waves and an antenna that receives the electromagnetic waves. The information is encoded in the wave pattern. Antennas receive thousands of signals at once, requiring tuners to select a particular frequency. Radio waves are used for wireless technologies, TV, phones, and some medical applications. They can travel long distances by following the Earth's curvature. Common radio frequencies include AM/FM and television bands.
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I m Pankaj singh. i have done my traing at AIR. This Presentation is all about ALL INDIA RADIO, Prasar Bharati. as there are now resources to get this ppt on net..i had to suffer a lot..so this is dedicated to all my friends who have done their training from AIR.
Radio communication
Marconi made the first radio transmission in 1895. Radio communication works by transmitting electromagnetic carrier waves that carry information via modulation. Amplitude modulation was used to add more information to radio waves. Mobile phones connect to networks through base stations that divide coverage into overlapping hexagonal cells to provide continuous coverage as the user moves between areas.
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1. A radio communication system consists of a microphone that converts sound waves to electrical signals, a modulator that modulates a carrier wave generated by an oscillator with the electrical signals, and an amplifier and broadcast antenna that transmit the modulated carrier wave as radio waves.
2. Modulation is necessary to transmit the electrical signals representing sound. It involves changing properties of the carrier wave, such as amplitude or frequency, in relation to the loudness, pitch, and other properties of the original sound.
3. At the receiver, an antenna intercepts radio waves from multiple stations and a tuner circuit uses a variable capacitor and inductor to selectively resonate with and receive signals from the desired station by matching its frequency.
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Radio waves are part of the electromagnetic spectrum and have the lowest frequency and longest wavelengths. They are used for Wi-Fi, TV, radio, and other wireless technologies. Ultra-high frequency (UHF) radio waves can penetrate buildings better than lower frequencies but have a shorter range; they allow for more channels by using a wider frequency band. Orthogonal frequency-division multiplexing splits signals to reduce interference. Super-high frequencies are used for mobile phones and satellites due to their small wavelengths enabling compact antennas and worldwide bandwidth. Radio waves continue to take on new uses and research may lead to improved wireless technologies.
Radio communication
Radio waves are used to transmit signals from mobile phones to the nearest base station. Base stations receive incoming signals and send them to the main telephone network. Each base station can handle around 100 to 150 separate signals at once, so multiple base stations are needed to support a large population. Mobile phones use radio waves to communicate with base stations, which transmit signals at different frequencies than they were received at.
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The document discusses how radio waves are used in media and communication. It explains that radio waves transmit information at the speed of light and are used for television, mobile phones, WiFi, and GPS. While radio waves have many uses in everyday life, their use for AM/FM radio and television may decline with digitalization and online alternatives.
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Radio waves are a type of electromagnetic radiation that have a wide range of wavelengths and frequencies. They travel at the speed of light and are used for various communication technologies like radio, television, mobile phones, and WiFi networks. AM and FM radio differ in how the signal is modulated, with AM covering larger areas but having more overlap, while FM has better quality but shorter range. Wireless devices use radio waves of different frequencies to communicate over various distances.
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Radio waves are electromagnetic waves that transmit signals between 30 kHz and 300 GHz, and are used to carry information via processes like amplitude modulation which alters the carrier wave. Mobile phones use radio waves to send signals to the nearest base station at radio frequencies, which then links the call to other networks, allowing mobile communication provided there are sufficient base stations. Radio communication requires a transmitter to produce a carrier wave that can be modulated to convey information across distances via radio frequencies.
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Radio waves have been used for communication for over a hundred years. Guglielmo Marconi and Nikola Tesla are considered the fathers of radio communication, with Marconi transmitting the first radio signal across the Atlantic. A mobile phone network uses radio waves to transmit signals between phones and base stations, which are connected to the wired telephone network. When a call is made, the phone sends a radio signal to the nearest base station, which routes the call through telephone cables or additional radio links to other stations and ultimately the destination phone. Base stations provide radio coverage to a geographical cell, and cells overlap to ensure users remain in contact with a station.
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Radio communication was pioneered by Marconi in 1895 and led to the development of mobile phones over a century later. The document discusses how radio waves are used to transmit information via modulation of electromagnetic carrier waves between mobile phones and cellular towers. It explains how amplitude modulation works and how mobile networks divide coverage into cells served by base stations to allow handoff between areas as users move around.
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Radio uses radio waves to transmit information by modulating properties of electromagnetic waves like amplitude, frequency, and phase. Radio waves are a type of electromagnetic radiation with wavelengths longer than infrared light. A transmitter generates radio frequency alternating current to produce radio waves, while a radio receiver receives radio waves and converts the information to a usable form using an antenna. Frequency refers to the number of cycles per second in alternating current, and the electromagnetic spectrum includes all known frequencies and wavelengths of photons.
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Radio waves are used to transmit signals between mobile phones and base stations. Mobile phones operate within specific frequency ranges, such as 872-960MHz and 1710-1875MHz. When a call is made, the mobile phone sends and receives radio signals from the nearest base station. Base stations are connected to each other and route calls as the user moves between different cellular areas covered by base stations. The size of each cellular area depends on terrain, frequency band, and call capacity needs in the area.
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Radio waves are electromagnetic waves that can travel through vacuum or other mediums. They have frequencies between 30 kHz to 300 GHz and wavelengths from 1-1000 meters. Radio waves are used for radio, television, phones and other communication technologies because they can travel long distances by reflecting off the ionosphere. They are generated by electric charges accelerated through conductor wires using an oscillator circuit. Common types are AM, FM, and newer digital radio technologies. Radio waves are essential for wireless information transmission.
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Radio communication uses radio waves to transmit signals through modulation of a carrier wave. The two pioneers of radio communication are Guglielmo Marconi, who first transmitted a radio signal across the Atlantic, and Nikola Tesla, who first developed a way to transmit radio signals. Radio waves carry signals for technologies like radio, television, and cellular phones and different frequency bands are used to avoid signal interference. Modulation methods include amplitude modulation, which varies the amplitude of the carrier wave, and frequency modulation, which varies the frequency.
Radio Waves SMAKBO
Radio waves are formed when an electrically charged oscillator modulates an audio signal onto a carrier wave, creating electromagnetic waves that can transmit energy and information through space. Radio waves have frequencies between 30 kHz and 300 GHz and wavelengths from 100 meters to 1 millimeter. They are used for applications like AM/FM radio, communication devices, radar, television, and satellite transmission.
Radio waves
Radio waves transmit information such as television, internet, and music through invisible electromagnetic waves that are received by antennas and decoded into various media. Radios have a transmitter that encodes sound into sine waves and an antenna that receives the electromagnetic waves. The information is encoded in the wave pattern. Antennas receive thousands of signals at once, requiring tuners to select a particular frequency. Radio waves are used for wireless technologies, TV, phones, and some medical applications. They can travel long distances by following the Earth's curvature. Common radio frequencies include AM/FM and television bands.
Pankaj (ALL INDIA RADIO)
I m Pankaj singh. i have done my traing at AIR. This Presentation is all about ALL INDIA RADIO, Prasar Bharati. as there are now resources to get this ppt on net..i had to suffer a lot..so this is dedicated to all my friends who have done their training from AIR.
Radio communication
Marconi made the first radio transmission in 1895. Radio communication works by transmitting electromagnetic carrier waves that carry information via modulation. Amplitude modulation was used to add more information to radio waves. Mobile phones connect to networks through base stations that divide coverage into overlapping hexagonal cells to provide continuous coverage as the user moves between areas.
Abegail
1. A radio communication system consists of a microphone that converts sound waves to electrical signals, a modulator that modulates a carrier wave generated by an oscillator with the electrical signals, and an amplifier and broadcast antenna that transmit the modulated carrier wave as radio waves.
2. Modulation is necessary to transmit the electrical signals representing sound. It involves changing properties of the carrier wave, such as amplitude or frequency, in relation to the loudness, pitch, and other properties of the original sound.
3. At the receiver, an antenna intercepts radio waves from multiple stations and a tuner circuit uses a variable capacitor and inductor to selectively resonate with and receive signals from the desired station by matching its frequency.
Presentation on ALL INDIA RADIO
The document summarizes the history and methodology of All India Radio (AIR), India's national public radio broadcaster. It traces AIR back to broadcasts started by the Radio Club of Bombay in 1923. Control passed to the government in 1930 and it was renamed All India Radio in 1936. The document also describes the basic principles and components of radio transmission and reception, as well as different types of microphones used in radio broadcasting.
Radiowaves
Radio waves are part of the electromagnetic spectrum and have the lowest frequency and longest wavelengths. They are used for Wi-Fi, TV, radio, and other wireless technologies. Ultra-high frequency (UHF) radio waves can penetrate buildings better than lower frequencies but have a shorter range; they allow for more channels by using a wider frequency band. Orthogonal frequency-division multiplexing splits signals to reduce interference. Super-high frequencies are used for mobile phones and satellites due to their small wavelengths enabling compact antennas and worldwide bandwidth. Radio waves continue to take on new uses and research may lead to improved wireless technologies.
Radio communication
Radio waves are used to transmit signals from mobile phones to the nearest base station. Base stations receive incoming signals and send them to the main telephone network. Each base station can handle around 100 to 150 separate signals at once, so multiple base stations are needed to support a large population. Mobile phones use radio waves to communicate with base stations, which transmit signals at different frequencies than they were received at.
Uses of radio waves
The document discusses how radio waves are used in media and communication. It explains that radio waves transmit information at the speed of light and are used for television, mobile phones, WiFi, and GPS. While radio waves have many uses in everyday life, their use for AM/FM radio and television may decline with digitalization and online alternatives.
Radio waves
Radio waves are a type of electromagnetic radiation that have a wide range of wavelengths and frequencies. They travel at the speed of light and are used for various communication technologies like radio, television, mobile phones, and WiFi networks. AM and FM radio differ in how the signal is modulated, with AM covering larger areas but having more overlap, while FM has better quality but shorter range. Wireless devices use radio waves of different frequencies to communicate over various distances.
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The document discusses various uses of radio waves beyond radio broadcasting, including television which uses amplitude and frequency modulation to transmit audio and video signals, infrared which can transmit small data packets but requires line of sight, and satellite navigation which uses signals from multiple satellites to determine location. It also covers Wi-Fi which transmits data wirelessly using radio signals, mobile networks which transmit voice data via microwave radiation, and radar which detects objects by transmitting radio waves and receiving signals bounced back.
Radio Frequency Waves ,Data communication & Networks
Radio waves are electromagnetic waves that propagate through free space. They have a wavelength between 1mm and 30km and a frequency between 10KHz and 300GHz. Information such as sound and images can be transmitted using radio waves by modifying properties of the wave like its amplitude or frequency. Radio waves can propagate through different modes including ground waves, sky waves, and line-of-sight. Various factors can impair radio wave transmission over long distances including attenuation, noise, multipath propagation, and refraction in the atmosphere. Radio waves are generated by oscillating electric and magnetic fields produced by accelerating charges and can encode both analog and digital information.
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Aviation relies heavily on radio systems for communication and navigation. Radio waves are electromagnetic waves that transmit information via transmitters and receivers. VHF radios operating between 118-137 MHz are most commonly used for air traffic control communications. HF radios can transmit over long distances but are affected by atmospheric conditions. Modulation methods like AM and FM encode information onto radio carriers. Key aviation radio systems include VHF communications, HF communications, intercoms, satellite communications, and ACARS for automated messaging.
Ref ch01 louis-frenzel
The document provides an overview of principles of electronic communication systems. It discusses the importance of communication and basic communication systems components. It also covers topics like modulation, multiplexing, the electromagnetic spectrum, bandwidth, and various communication applications. Finally, it discusses careers in the communication industry and major employers.
Radio Waves
This document discusses radio waves and their uses. It defines radio waves as a type of electromagnetic radiation with wavelengths longer than infrared light that can transmit frequencies over long or short distances. Radio waves are used for technologies like mobile phones, Bluetooth, wireless networks, radio, television and more. The document describes how radio antennas receive signals and how radio waves are used in mobile devices and television transmission. It also discusses radio wave transmission methods and the importance of radio waves in modern society.
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This presentation provides an overview of radio communication. It discusses the history of radio from Maxwell's electromagnetic theory to modern innovations. It then covers key topics like classification of radio waves, modulation techniques, transmitter and receiver components, common uses, and future technologies like cognitive radio networks. The presentation aims to explain the basic mechanisms and applications of radio communication over the last hundred years.
Communication basics part 1
Starting from the basic communication until the wave propagation and basic parts of the Radio communication.
Fm transmitter
This slide discusses about the working and usage of an fm transmitter.It can help you with a physics project
RADIO TECHNOLOGY
This document presents information about electronic shops and the history and mechanisms of radio. It discusses the key components of radio transmission and reception including transmitters, antennas, receivers, and different modulation techniques. It also outlines some of the early and modern uses of radio in communication, navigation, and other applications. Finally, it briefly introduces cognitive radio networks as an advanced wireless technology.
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Presentation1
- 2. Radio Waves and Telecommunications Naomi Bowden Tech1002 Z Allman Wednesday 9am
- 3. Radio Waves Radio waves are transmitted and received using electromagnetic waves also known as radio waves. Electric and magnetic fields are oscillated to determine the frequency. Frequency (oscillates per second) determine what they can be used for.
- 4. The standard frequency bandwidth for telecommunications, including broadcast television and radio is set at between 30KHz and 300 GHz (ofcom.org.uk 25/01/11)
- 5. Radio Communication using Amplitude Modulation A carrier signal is used to modulate sound waves such as speech and music, rather than the frequency being modulated as in FM radio broadcasts.
- 6. Electrical signals given off by microphones and other devices are used to vary the amplitude of the carrier wave rather than the frequency.
- 7. How Mobile Phone Networks Use Radio Communication 60% of the UK population, around 40 million people, own and use a mobile telephone
- 8. Mobile phones send and receive signals to and from the nearest base station. These radio waves are then sent back to the devices at a slightly different frequency which vibrate within the phones speaker so that our ears can convert the signals to voices or music.
- 9. Base stations link phones together (both mobile and landline) and transmit the information given either through phone cables or high frequency radio links via antenna.
- 10. References: www.Ofcom.org.uk 25/01/11 http://www.sitefinder.ofcom.org.uk/mobilework.htm 25/01/11