Medical scanners, radar systems and microwave ovens also use radio frequency fields. Request pdf radio frequency light sources the history of rf lighting, basic ideas of electrodeless rf lamps, classification and properties of different types of. Sumit thakur ece seminars wireless electricity ppt presentation pdf report. Radiofrequency rf radiation includes rf from broadcast antennas, portable radio systems, microwave antennas, satellite, and radar kelly classic, certified medical physicist. Radio frequency light sources seminar report, ppt, pdf for ece. Ppt radio navigation powerpoint presentation free to. A technical seminar on rf light sources rakesh mandiya rakesh.
Free radio music powerpoint template is a radio mic slide design with gray background and curve effect in the slide design that you can download for microsoft powerpoint 2007 and 2010 free radio powerpoint template slide has a mic illustration ready to be used by radio stations as well as broadcasting online or online internet radio. A light source generates light using another form of energy such as heat or electricity. These include the sun, fire, table lamp, flashlight, etc. Three practical ways to energize rf light sources are capacitive,inductive and wave sustained discharge. Radio frequency light sources presentation free download as powerpoint presentation. The current electricity generation system we have a tendency to waste over half its resources. A particular frequency of this radiation around 390700 nm is visible to the human eye. Radio frequency rf fields range from 100 khz to 300 ghz. Radio frequency light source full seminar report, abstract and. Also explore the seminar topics paper on radio frequency light sources with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2015 2016. Radio frequency light source full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information. When we look at a leaf we know that it is green in colour because light bounces off the leaf to our eyes to tell us that it is green.
Twinkl key stage 1 year 1, year 2 subjects science physical. Familiar sources include mobile phones, cordless phones, local wireless networks and radio transmission towers. Role of the producer technical part is to do with the proper use of the tools of his trade, knowing when and how to use program making equipment. Download the seminar report for radio frequency light source. This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies. Radio telescopes look toward the heavens to view planets, comets, giant clouds of gas and dust, stars, and galaxies. Explore radio frequency light sources with free download of seminar report and ppt in pdf and doc format. Optical frequency combs ofcs have attracted attention as optical frequency rulers due to their toothlike discrete spectra together with their inherent modelocking nature and phaselocking control to a frequency standard. Wireless electricity or witricity is nothing but the transfer of electrical energy or power over a distance without the utilization of wires. Frequency modulation fm broadcasting is a broadcasting technology pioneered by edwin howard armstrong which usesfrequency modulation fm to provide highfidelity sound over broadcast radio. Generate light by exciting a plasma inside a bulb by using radio frequency power. Radio communications university of wisconsinmadison. Get radio frequency light sources seminar report and ppt in pdf and doc. Presenting by rohit pandey under the guidance of ms.
Figure 1 is a graphical representation of the spectrum of electromagnetic energy or radiation in ascending frequency decreasing wavelength. Radio frequency light sources presentation incandescent light. The only difference between these kinds of electromagnetic radiation is the frequency of their oscillation alternation of the electric and magnetic fields back and forth in polarity. Outline properties of em waves choice of frequencies radio wave production radio wave propagation radio wave reception television radar properties of em waves transverse propagates in vacuum any frequency possible frequency x wavelength c c 3x108 ms in vacuum transverse em wave choice of frequencies lower limit 105 hz, 3 km bandwidth. Also explore the seminar topics paper on radio frequency light sources with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering or cse students for the year 2015 2016. Items, cases or pallets of products, high value goods vehicles, assets, livestock or personnel passive tags do not require power draws from interrogator field lower storage capacities few bits to 1 kb shorter read ranges 4 inches to 15 feet usually writeoncereadmanyreadonly tags cost around 25 cents to few dollars active tags. Radio frequency light source, ask latest information, abstract, report, presentation pdf,doc,ppt,radio frequency light source technology discussion, radio. Collection of electronics engineering seminar topics with. Electromagnetic spectrum powerpoint wavelength, frequency. Radio frequency light source, ask latest information, abstract, report, presentation pdf,doc, ppt, radio frequency light source technology discussion, radio frequency. Radio and tv transmission radio, television, and some other forms of communication e.
Wave and particlelike behavior, and how to calculate the wavelength or frequency of a light wave. Energy harvesting ic radio frequency rf aem40940 e. Radio spectrum definition of radio spectrum by merriamwebster. To the contrary, decades of development of rf light sources shows a preference for inductive rf discharge and reduction of rf frequency. Also explore the seminar topics paper on radio frequency light sources with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering or cse students for the. This allows product designers and engineers to extend battery. Items, cases or pallets of products, high value goods vehicles, assets, livestock or personnel passive tags do not require power draws from interrogator field lower storage capacities few bits to 1 kb shorter read ranges 4 inches to 15 feet usually writeoncereadmanyreadonly tags cost around 25. The sun is one of the strongest radio sources in the sky. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. Sound radio light harmful radiation vhf very high frequency uhf ultra high frequency shf super high frequency ehf extremely high frequency 4g cellular 56100 ghz 2. The stock light sources consist of a 28 vdc power supply, rf driver, and a resonant rf cavity. Radio frequency rf is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 khz to around 300 ghz. Ppt radio frequency light sources powerpoint presentation, free. Free radio music powerpoint template is a radio mic slide design with gray background and curve effect in the slide design that you can download for microsoft powerpoint 2007 and 2010.
Ppt the propagation of light powerpoint presentation. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Highintensity discharge lamps can be driven by radiofrequency signals in the ism frequency band at 2. Received wave is delayed due to the travel time received wave frequency is shifted due to doppler effect if transmitter and receiver move doppler shift. Radio frequency light sources seminar report, ppt, pdf. The rf circuit is directly coupled to the guidetrap electrodes, and no frequency or impedance matching is required. The nature of light as a wave a small disturbance in an electric field creates a small magnetic field, which in turn creates a small electric field, and so on light propagates itself by its bootstraps.
Interference with radio, tv and cordless telephone signals fcc. Interference occurs when unwanted radio frequency signals disrupt your use of your television, radio or cordless telephone. What are the sources of exposure to radio frequency fields. Radio frequency light sources seminar report, ppt for ece. Light waves can interfere with other light waves, canceling or amplifying them. Epeas rf energy harvesting ic solution aem40940 is the next generation integrated energy management subsystem integrating a rectifier that extracts ac power from ambient rf waves to simultaneously store energy in a rechargeable element and supply the system with two independent regulated voltages. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The solar surface has a temperature of about 6000k, and even if the gas at this temperature emits more wavelengths in the. Radio spectrum definition of radio spectrum by merriam. This is why there is no hope for microwave rf lamps for general lighting. Ppt radio frequency light sources powerpoint presentation.
Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Multiple lasers and intense pulsed light sources have been shown to provide longterm hair removal however, the management of all dark skin. Based on this concept, their applications until now have been demonstrated in the fields of optical frequency metrology. This ppt covers the basics of the electromagnetic spectrum including the different parts of the electromagnetic spectrum radio, microwave, infrared, visible, ultraviolet, xrays, gamma, the relationship between wavelength, frequency, and energy, and the characteristics and uses of each part of the electromagnetic spectrum. The term fm band describes the frequency band in which fm is used for broadcasting. Light sources and types of light sources natural light. The radio in your car receives the radio waves, decodes the information, and uses a speaker to change.
Apr 23, 2015 the sun emits radio waves since its hot hot it is said that it is a thermal source and then emits radio waves more at high frequencies but there is a strong emission even at lower frequencies in the field of nonthermal sources for the mechanism of synchrotron radiation which derives from the movement of high speed electrons around the magnetic field. By studying the radio waves originating from these sources, astronomers can learn about their composition, structure, and motion. Radiofrequency lighting accessscience from mcgrawhill. The various sources in these applications can be transmitting simultaneously and in the same geographic region.
Winner of the standing ovation award for best powerpoint templates from presentations magazine. Radiofrequency rf radiation health physics society. Radio astronomy has the advantage that sunlight, clouds, and rain do not affect observations. If you are looking for affordable, lowcost, premium radio powerpoint templates for microsoft powerpoint 2010, 2007, 20 and 2016 then you can subscribe to download any of the following presentation templates and animated cliparts by presentermedia. This website and its content is subject to our terms and conditions. Also explore the seminar topics paper on radio frequency light sources with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece. Ppt the propagation of light powerpoint presentation free. Gasdischarge lamps operated at radio frequencies are efficient sources with interesting properties, whereas there is no advantage in operating incandescent or solidstate light sources at radio frequencies. Collection of electronics engineering seminar topics with report. By using a source of ac voltage and a special device called an antenna, we can create electromagnetic waves of a much lower frequency than that of light with. Principles of radio basic ac theory electronics textbook. Radio frequency plasma discharge lamps for use as stable.
Megahertz mhz are 1 million cycles per second, and gigahertz ghz are at the high end 1 billion cycles per second. The nature of electromagnetic waves and light sources. Collection of latest engineering seminar topics, abstracts, papers, reports, presentation. Ppt radio frequency identification powerpoint presentation free to download id. Simple radiofrequency power source for ion guides and ion traps. Radiofrequency rf radiation refers to the electromagnetic fields with frequencies between 300 khz and 300 ghz, often extending the lowerfrequency boundary of rf radiation to 10khz, or even to 3 khz in order to include emission from commonly used devices. Ppt radio navigation powerpoint presentation free to download id. Radio frequency light sources engineering seminar topics. Highintensity discharge lamps can be driven by radiofrequency. A high power oscillator circuit, designed to power radiofrequencyrf. The design provides precisely adjustable rf amplitudes from. The nature of light uw madison astronomy department. Also get the seminar topic paper on radio frequency light sources with abstract or synopsis, documentation on advantages and disadvantages, presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2016 2017. Frequency and very low frequency elfvlf, through radio frequency rf and microwaves, to infrared ir light,visible light, ultraviolet uv light, xrays, and gamma rays.
A power point presentation on radiofrequency identification presented by. Radio frequencies range from about 10 khz to 30 ghz. With increasing frequency, efficiency will decrease, it is woks efficiently for some particular frequencies, if frequency changes there are. Radio frequency light sources request pdf researchgate. Jul 21, 2011 powerpoint presentation that shows pupils several objects and they have to decide if they are light sources and if being a light source is its sole purpose. Radio spectrum definition is the region of the electromagnetic spectrum spanning the radio frequency range. A high power oscillator circuit, designed to power radio frequency rf. Free radio powerpoint template slide has a mic illustration ready to be used by radio stations as well as broadcasting online or online internet radio.
Download ppt 1 rf radio frequency technology basic telecommunications. Radio frequency rf fields have many applications in modern communications. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that. What are the sources of exposure to radio frequency. Radio frequency energy harvesting project final report for. Radio wave propagation radio wave reception television radar properties of em waves transverse propagates in vacuum any frequency possible frequency x wavelength c c 3x108 ms in vacuum transverse em wave choice of frequencies lower limit 105 hz, 3 km bandwidth data rate antenna size project elf. Aerials and radio frequency propagation aerials and radio frequency propagation by farhan saeed aerials in any radio system information is. Sources of light discussion prompt powerpoint teacher made. Radio frequency light sources seminar report, ppt, pdf for. With increasing frequency, emi radiations grows, regulations are more stringent, ballast efficiency decreases, and ballast cost increases. The adobe flash plugin is needed to view this content. Electromagnetic radiation consists of waves of electric and magnetic energy moving together that is, radiating through space at the speed of light.
Radio frequency light sources free download as powerpoint presentation. Familiar sources include radar, antennas for tv and radio broadcasting, various radio services and telecommunication as well as appliances such as microwave ovens or portable devices like mobile phones or tablets. Radio frequency rf energy harvesting, also referred to as rf energy scavenging has been proposed and researched in the 1950s 12 using high power microwave sources, as more of a proofofconcept rather than a practical energy source, due to the technologies available at. The rf cavity includes a small bulb with a fill gas that is. Which are the sources of light from which light is originated.
1475 221 334 296 414 875 140 255 1356 1508 1420 690 227 1202 882 1374 914 1208 1516 339 965 1302 1047 1312 1145 1425 677 1342 1241 1138 241 144 735 294 1392 356 71 684 986