The fundamental difference between rf lamps and conventional lamps is that rf. Introduction rf light sources follow the same principles of converting electrical power into visible radiation as conventional gas discharge lamps. This problem is a combinatorial nphard optimization problem. 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. Radio frequency light source full seminar report, abstract and. Radio frequency plasma discharge lamps for use as stable. The performance data of the light sources are the following. Get radio frequency light sources seminar report and ppt in pdf and doc. 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 request pdf researchgate. Multiple lasers and intense pulsed light sources have been shown to provide longterm hair removal however, the management of all. 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. Radio frequency light sources presentation incandescent light.
Radiofrequency ablation is medical process, in which high frequency electromagnetic waves are used to generate heat for the. The unit id is a 25 bit code that is more the most part unique to each radio. The adobe flash plugin is needed to view this content. Radiofrequency rf radiation includes rf from broadcast antennas, portable radio systems, microwave antennas, satellite, and radar kelly classic, certified medical physicist. Reflection refraction dispersion diffraction interference polarization what is light light is a special type of wave what we know as light or visible light is actually a type of something called electromagnetic radiation. Radio frequency light sources seminar report, ppt, pdf. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Generate light by exciting a plasma inside a bulb by using radio frequency power. A free powerpoint ppt presentation displayed as a flash slide show on id. A high frequency carrier takes information from one place to another.
To the contrary, decades of development of rf light sources shows a preference for inductive rf discharge and reduction of rf frequency. The share my lesson science team has brought together a diverse range of free teaching resources for you to use in your classroom. The fccs exposure guidelines specify limits for human exposure to rf emissions from handheld mobile phones in terms of specific absorption rate sar, a measure of the rate of absorption of rf energy by the body. Winner of the standing ovation award for best powerpoint templates from presentations magazine.
The only significant difference cellular systems and conventional landlines is the radio link that connects the wireless network to the cell base station. The problem of radio frequency assignment is to provide communication channels from limited spectral resources whilst keeping to a minimum the interference suffered by those whishing to communicate in a given radio communication network. Remove this presentation flag as inappropriate i dont like this i like this remember as a favorite. Radiowave propagation the propagation of radiofrequency electromagnetic waves in the atmosphere, in outer space, and underground. You have a killer idea, and now you need a killer tech presentation to go with it. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from.
Smart lighting rf lighting and wireless light switch. Frequency modulation fm broadcasting is a broadcasting technology pioneered by edwin howard armstrong which usesfrequency modulation fm to provide highfidelity sound over broadcast radio. The term fm band describes the frequency band in which fm is used for broadcasting. Radio frequency rf fields have many applications in modern communications. R min1, r max1 are the minimum and the maximum of the first fresnels zone of the radiation pattern. Radio spectrum definition of radio spectrum by merriam. 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. Radio frequency light sources free download as powerpoint presentation. Radio signals travel at the speed of light through the air 186,282 miles per second. Radio frequency light sources seminar report, ppt for ece.
This is why there is no hope for microwave rf lamps for general lighting. The electromagnetic spectrum is the complete spectrum or continuum of all forms of light an electromagnetic wave consists of electric and magnetic fields which vibrate thus making waves. The stock light sources consist of a 28 vdc power supply, rf driver, and a resonant rf cavity. Radio frequency light sources seminar report and ppt for.
Frequency of operation y digital radio is operated in a frequency range of between 215 230 mhz mega hertz. Radio frequency light source full seminar reports, pdf seminar abstract, ppt, presentation, project idea, latest technology details, ask latest information. Different sources specify different upper and lower bounds for the frequency range. Radio frequency light source, ask latest information, abstract, report, presentation pdf,doc. Sumit thakur ece seminars wireless electricity ppt presentation pdf report. 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. 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. Radio frequency light sources presentation free download as powerpoint presentation.
Explore radio frequency light sources with free download of seminar report and ppt in pdf and doc format. Familiar sources include mobile phones, cordless phones, local wireless networks and radio transmission towers. Radio frequency light sources engineering seminar topics. Figure 1 is a graphical representation of the spectrum of electromagnetic energy or radiation in ascending frequency decreasing wavelength. Table routing simplified mesh requesting device sends route request 4 1 3 routing devices 0 adds link cost depending on lqi 4 7 6 selects request with lowest link s d cost 0 2 forwards the route request 6 9 stores the information 4 requested device selects lowest link cost in this example the selected.
The rf cavity includes a small bulb with a fill gas that is. Download your presentation papers from the following links. Highintensity discharge lamps can be driven by radiofrequency signals in the ism frequency band at 2. A technical seminar on rf light sources rakesh mandiya rakesh.
The relation between the frequency f and wavelength. Ppt radio frequency light sources powerpoint presentation, free. With every transmittion from a p25 radio, metadata with the unit id, talkgroup id and nac network access code since the message is sent via broadbast. It avails radio waves for the automatic recognition of people and objects. A linear radio frequency scale of 1hz mm 109m would extend beyond the moon 3. Multiple lasers and intense pulsed light sources have been shown to provide longterm hair removal however, the management of all dark skin. This website and its content is subject to our terms and conditions. Request pdf radio frequency light sources the history of rf lighting, basic ideas of electrodeless rf lamps, classification and properties of different types of. Electromagnetic spectrum powerpoint wavelength, frequency.
The abbreviation of radio frequency identification is rfid and is a term of an applied science that explains the itinfrastructure which is required to gather, filter and advance the raw rfid information before processing it to the backend systems. 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. The current electricity generation system we have a tendency to waste over half its resources. Radiofrequency rf radiation health physics society. 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. Tes global ltd is registered in england company no 02017289 with its registered office. Global market for pain management radiofrequency ablation devices 20 2020 big market research, global radiofrequesncy ablation devices market for pain management size, share, trends, demand, insights, analysis, opportunities, segmentation, forecast 202020. Radio frequency light sources seminar report, ppt, pdf for ece. Three practical ways to energize rf light sources are capacitive,inductive and wave sustained discharge. Presenting by rohit pandey under the guidance of ms. Choice of frequency and discharge type the frequency rage between 2. Based on this concept, their applications until now have been demonstrated in the fields of optical frequency metrology. 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. Wireless electricity or witricity is nothing but the transfer of electrical energy or power over a distance without the utilization of wires.
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. Transmitted radio, sound, or light waves can follow slightly different paths before reaching a receiver, especially if there are obstructions or reflecting objects between the two. Medical scanners, radar systems and microwave ovens also use radio frequency fields. P25 radios tend to respond automatically to any ping that it comes across. Download the seminar report for radio frequency light source.
The safe limit for a mobile phone user is an sar of 1. 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. This part of the radio spectrum is sometimes called band iii, or vhf, and was previously used for some television transmissions and by the military. 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. 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. 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. A transformer having a tapped winding or two or more windings designed to furnish inductive reactance or to transfer radiofrequency energy from one circuit to another by means of a magnetic field. Ppt radio frequency identification powerpoint presentation free to download id. Radio spectrum definition is the region of the electromagnetic spectrum spanning the radio frequency range. With increasing frequency, emi radiations grows, regulations are more stringent, ballast efficiency decreases, and ballast cost increases. Radio frequency rf is the oscillation rate of an alternating electric current or voltage or of a. Downloads saved resources author dashboard add resource my shop tes elements community. Ppt radio frequency rf data communications powerpoint. Ppt radio transmission powerpoint presentation free to.
1199 1011 660 161 304 907 1438 237 621 730 935 1398 191 150 470 992 1038 37 1203 480 1101 483 1374 1235 1366 652 509 201 670 625 1368