logging in or signing up fractal antenna ppt (1) milus Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1856 Category: Science & Tech.. License: All Rights Reserved Like it (10) Dislike it (0) Added: October 25, 2010 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: subhamdas41gmail.com (8 month(s) ago) ear sir please send me this presentation. i need this urgently Saving..... Post Reply Close Saving..... Edit Comment Close By: abuhashim92 (8 month(s) ago) good ppt, i need ur ppt for my presentation, would u plz send me if u dont mind; Saving..... Post Reply Close Saving..... Edit Comment Close By: deep9896 (8 month(s) ago) nice ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: deep9896 (8 month(s) ago) nice ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: abhi1989.ec (8 month(s) ago) dear sir please send me this presentation. i need this urgently. thank you Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript FRACTAL ANTENNA : 1 FRACTAL ANTENNA REEN PAUL S7 EC B ROLL NO:45 Overview : 2 Overview Introduction Need of fractal antenna History Features Examples Creation Advantages Applications Antenna : 3 Antenna A transducer that transmits or receives EM waves Convert EM radiations to electric current or vice versa. Used in broadcasting, point to point communication, cell phone, spacecraft communication. Fractal : 4 Fractal Geometric shape that can be split into parts each of which is a reduced size copy of the whole. Benoit Mandelbrot 1975 Latin fractus –broken or fractured Fractal Antenna : 5 Fractal Antenna Uses a self similar design to maximize the length, or increase the perimeter of material that can receive or transmit EM radiation with a given total surface area or volume. Multilevel space filling curves. Iterations. Why fractal antenna? : 6 Why fractal antenna? Compact Wideband applications Background of the invention : 7 Background of the invention Euclidean geometry Area directly proportional to perimeter Emphasis on frequency resonance and power patterns Concentrated on ease of construction rather than underlying electromagnetics First order iteration No attempts to exploit multiple scale self similarity of real fractals Equations : 8 Equations Fractal ratio limit dimension D=log L/log r Perimeter compression parameter PC=full sized antenna element length/fractal reduced antenna element length PC =A log[ N(D+C)] X(n+1)=f(Xn,Yn) Y(n+1)=g(Xn,Yn) Features : 9 Features R>eucledian Rapid element size shrinkage Increased effective wavelength N increase no:of resonant nodes increase Smaller than euclidean Much gain & frequencies of resonance Low Q and good bandwidth Slide 10: 10 Acceptable SWR Radiation Z that is frequency dependant High efficiency Infinitely complex Gain and PC as a function of N : 11 Gain and PC as a function of N Frequency invariance : 12 Frequency invariance Self similarity --invariant Rumey`s principle :antennas had to be defined by angles for this to be true 1999 analysis based on Maxwell`s equations A subset of the more general set of self similar conditions Slide 13: 13 Used where a wide range of frequencies needed while still having moderate G and D. Used for a VHF/UHF television antenna Tuning units : 14 Tuning units Wide bandwidth and complex resonance no need for tuning units For issues that require equalization need tuning units Log-periodic antenna (LP) : 15 Log-periodic antenna (LP) Dwight E.Isbell and Raymond DuHamel Individual components-dipoles Length and spacing of elements of LPA increase logarithmically from 1 end to the other Z and R characteristics that are regularly repetitive as a logarithmic function of the excitation frequency Multi-element,unidirectional,narrow beam antenna Slot fractal antenna : 16 Slot fractal antenna A communication system : 17 A communication system Areas of creation : 18 Areas of creation Design Prototyping Testing Manufacturing Ongoing innovation Advantages : 19 Advantages Powerful,versatile & compact antennas Fractal version of all existing antenna types Production of high performance antennas Smaller than traditional ones More reliable & lower cost One antenna able to replace many Increased bandwidth & multiband capability Decrease size load & enable optimum smart antenna technology Slide 20: 20 Slide 21: 21 Slide 22: 22 Applications : 23 Applications Military applications Custom applications Military applications : 24 Military applications Extreme frequency range operation Compact enough to be mounted in a variety of locations Rugged and field proven Inter operability Caability for covert operations Custom applications : 25 Custom applications Support full deployment of world`s most advanced wireless technology Mobile device configurations made possible Low cost performance enhancement for today`s RFID applications In-building communication applications Slide 26: 26 THANKYOU You do not have the permission to view this presentation. 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fractal antenna ppt (1) milus Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1856 Category: Science & Tech.. License: All Rights Reserved Like it (10) Dislike it (0) Added: October 25, 2010 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: subhamdas41gmail.com (8 month(s) ago) ear sir please send me this presentation. i need this urgently Saving..... Post Reply Close Saving..... Edit Comment Close By: abuhashim92 (8 month(s) ago) good ppt, i need ur ppt for my presentation, would u plz send me if u dont mind; Saving..... Post Reply Close Saving..... Edit Comment Close By: deep9896 (8 month(s) ago) nice ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: deep9896 (8 month(s) ago) nice ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: abhi1989.ec (8 month(s) ago) dear sir please send me this presentation. i need this urgently. thank you Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript FRACTAL ANTENNA : 1 FRACTAL ANTENNA REEN PAUL S7 EC B ROLL NO:45 Overview : 2 Overview Introduction Need of fractal antenna History Features Examples Creation Advantages Applications Antenna : 3 Antenna A transducer that transmits or receives EM waves Convert EM radiations to electric current or vice versa. Used in broadcasting, point to point communication, cell phone, spacecraft communication. Fractal : 4 Fractal Geometric shape that can be split into parts each of which is a reduced size copy of the whole. Benoit Mandelbrot 1975 Latin fractus –broken or fractured Fractal Antenna : 5 Fractal Antenna Uses a self similar design to maximize the length, or increase the perimeter of material that can receive or transmit EM radiation with a given total surface area or volume. Multilevel space filling curves. Iterations. Why fractal antenna? : 6 Why fractal antenna? Compact Wideband applications Background of the invention : 7 Background of the invention Euclidean geometry Area directly proportional to perimeter Emphasis on frequency resonance and power patterns Concentrated on ease of construction rather than underlying electromagnetics First order iteration No attempts to exploit multiple scale self similarity of real fractals Equations : 8 Equations Fractal ratio limit dimension D=log L/log r Perimeter compression parameter PC=full sized antenna element length/fractal reduced antenna element length PC =A log[ N(D+C)] X(n+1)=f(Xn,Yn) Y(n+1)=g(Xn,Yn) Features : 9 Features R>eucledian Rapid element size shrinkage Increased effective wavelength N increase no:of resonant nodes increase Smaller than euclidean Much gain & frequencies of resonance Low Q and good bandwidth Slide 10: 10 Acceptable SWR Radiation Z that is frequency dependant High efficiency Infinitely complex Gain and PC as a function of N : 11 Gain and PC as a function of N Frequency invariance : 12 Frequency invariance Self similarity --invariant Rumey`s principle :antennas had to be defined by angles for this to be true 1999 analysis based on Maxwell`s equations A subset of the more general set of self similar conditions Slide 13: 13 Used where a wide range of frequencies needed while still having moderate G and D. Used for a VHF/UHF television antenna Tuning units : 14 Tuning units Wide bandwidth and complex resonance no need for tuning units For issues that require equalization need tuning units Log-periodic antenna (LP) : 15 Log-periodic antenna (LP) Dwight E.Isbell and Raymond DuHamel Individual components-dipoles Length and spacing of elements of LPA increase logarithmically from 1 end to the other Z and R characteristics that are regularly repetitive as a logarithmic function of the excitation frequency Multi-element,unidirectional,narrow beam antenna Slot fractal antenna : 16 Slot fractal antenna A communication system : 17 A communication system Areas of creation : 18 Areas of creation Design Prototyping Testing Manufacturing Ongoing innovation Advantages : 19 Advantages Powerful,versatile & compact antennas Fractal version of all existing antenna types Production of high performance antennas Smaller than traditional ones More reliable & lower cost One antenna able to replace many Increased bandwidth & multiband capability Decrease size load & enable optimum smart antenna technology Slide 20: 20 Slide 21: 21 Slide 22: 22 Applications : 23 Applications Military applications Custom applications Military applications : 24 Military applications Extreme frequency range operation Compact enough to be mounted in a variety of locations Rugged and field proven Inter operability Caability for covert operations Custom applications : 25 Custom applications Support full deployment of world`s most advanced wireless technology Mobile device configurations made possible Low cost performance enhancement for today`s RFID applications In-building communication applications Slide 26: 26 THANKYOU