Introduction to EM waves and various techniques of communication

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  • เผยแพร่เมื่อ 4 ส.ค. 2024
  • Lecture series on Transmission Lines and E.M Waves by Prof. R.K.Shevgaonkar, Dept of Electrical Engineering, IIT Bombay
    For more details on NPTEL visit nptel.iitm.ac.in

ความคิดเห็น • 139

  • @Gsandhya96
    @Gsandhya96 4 ปีที่แล้ว +52

    #2020#coronadays#emtlove
    I am here after completing the entire series of lectures...its been 12 years ever since this recording, still no alternative to this man, and he will continue to don for decades to come.
    Heartfelt thanks to you sir..

    • @narayankumarchoudhary7584
      @narayankumarchoudhary7584 4 ปีที่แล้ว +1

      Hi Mam.
      I Just had a query ...
      Do you suggest any reference material along with this.
      i am planning to watch the complete series for my GATE 2021 Examination.
      Kindly suggest anything else if you want regarding this lecture series...so that i can get optimum benefits from this series.
      imnryn@gmail.com
      thnanks.

    • @saicharanmarrivada5077
      @saicharanmarrivada5077 3 ปีที่แล้ว

      Yes, he is an IEEE fellow for a reason :)

    • @abhijitbiswas6447
      @abhijitbiswas6447 3 ปีที่แล้ว

      @@narayankumarchoudhary7584 please give me some suggestions (like which book should i read), i am also planning to watch this series for my gate 2022 ec preparation ...my mail id - biswasabhijit951@gmail.com

    • @gopikrishna1452
      @gopikrishna1452 3 ปีที่แล้ว

      EMT Love 😂

    • @edisonkho5874
      @edisonkho5874 3 ปีที่แล้ว

      @@abhijitbiswas6447 electromagnetics by shevgaonkar and elements of electromagnetics by Matthew N.O. sadiku

  • @tpmbe
    @tpmbe 4 ปีที่แล้ว +5

    Thank you for advancing this subject of EM and teaching many of us that don't have the University resources at hand...God Bless and Wishing you well

  • @0zero
    @0zero 14 ปีที่แล้ว +17

    Thanks for the lesson. Greetings from Spain.

  • @ThuanDoan
    @ThuanDoan 8 ปีที่แล้ว +14

    I really appreciate that you made the sub for your video.

  • @MrsZaboon
    @MrsZaboon 13 ปีที่แล้ว +2

    I enjoyed this lecture greatly. It kept me engaged and peaked my interest. Thank you!

  • @DAVZEE3
    @DAVZEE3 16 ปีที่แล้ว +1

    i HAVE TAKEN COURSES LIKE THIS THROUGH COLLEGE COURSES, ON THE JOB PRACTICAL EXPERIENCE, AND INDEPENDENT STUDY, AND IT IS ALWAYS GOOD TO GO BACK TO BASICS, AND GET DIFFERENT PERSPECTIVES FROM DIFFERENT PROFESSORS... THANKS CARLOS.....OF LASER RADIO COMMUNICATIONS IN NYC.

  • @nihadabbikar5788
    @nihadabbikar5788 4 ปีที่แล้ว +4

    Sir.....i am really blessed to lesson your lecturers....such an amazing journey of one of the toughest subject(according to me).you are really outstanding in your knowledge and at the same time your teaching skills....one may find very interesting these whole entire series with you...And for the people who are seeing this lecturers for the first time....for understanding of this subject then I may tell you "Gugs you are in the right place".And Prof. Shevgonkar I am really thankfull to you sir....one thing sir I just wanna touch your feet sir....for your great and outstanding knowledge and thanku so much nptel for this wonderful initiative...God bless you all....

    • @contentcreator265
      @contentcreator265 4 ปีที่แล้ว

      Could you just tell me, what are the prerequisites for these lec series, (emt) please????

    • @nihadabbikar5788
      @nihadabbikar5788 4 ปีที่แล้ว +2

      @@contentcreator265
      Pre-requisites::: 1.if you really learn and further wanted to do some research on this subject then right place but if you want to learn this only for Govt exams (I personally say "NO" for this subject from nptel)then take your own risk of time and understanding since it really takes lot of time and lot hell of a concentration.
      2. You must have at least basic knowledge on vectors, and basic knowledge about electromagnetic waves.

    • @abhijitbiswas6447
      @abhijitbiswas6447 3 ปีที่แล้ว

      @Niha Dabbikar
      can i understand if i have knowledge of vector algebra only

  • @thecraftsman8083
    @thecraftsman8083 3 ปีที่แล้ว +1

    These lectures are immortal!!!

  • @sridharchitta7321
    @sridharchitta7321 2 ปีที่แล้ว +1

    Transmission-line theory shows that for all types of TEM mode transmission lines (coaxial, parallel-wire), the basic equations of voltage and current variation over the line are
    dV/dz = - (R + jwL)I, and dI/dz = -(G + jwC)V in which R, G, L and C are distributed parameters expressed as so many ohms/unit length, farads/unit length and so on.
    A derivation of this expression maybe found in several textbooks.
    .
    Transmission lines, operated in the radio frequency range and at higher frequencies, are generally modeled and analyzed using distributed parameters (inductances and capacitances), because the quasi steady-state conditions (that had allows us to write the capacitor reactance expression as 1/2πfC in the lumped regime of analysis) breakdown in transmission lines of lengths which are greater than the free space wavelengths of the signal.
    Thus, transmission lines are commonly analyzed considering the propagation of energy by the electric and magnetic fields (electromagnetic waves), around the conductors of the line; fields don't travel, the wave travels.
    It would be instructive to understand Current, the conduction process and Voltage at the fundamental level before progressing to a discussion of transmission line theory.
    Electrostatics and circuits belong to one science not two as in the following two videos:
    i. th-cam.com/video/TTtt28b1dYo/w-d-xo.html and
    ii. th-cam.com/video/8BQM_xw2Rfo/w-d-xo.html
    The sustenance of an electromagnetic wave between the conductors is because of two time-varying field processes,
    i. a changing magnetic field produces a curly electric field (Faraday’s Law), and
    ii. a changing electric field produces a curly magnetic field (Maxwell’s added term to Ampere’s Law).
    It is not possible in this post to discuss in more detail the distributed parameter approximation of transmission lines.
    The last frame References in video #1 lists textbook 4 which discusses these topics in more detail using a unified approach and provides an intuitive understanding of distributed capacitance and inductance of transmission lines.

  • @sarahkerrigan7240
    @sarahkerrigan7240 9 ปีที่แล้ว +12

    This university is so generous !

  • @NeilRieck
    @NeilRieck 15 ปีที่แล้ว

    These lectures are fantastic. Thankyou for posting them.
    NSR from Canada.

  • @aditya-ps1cd
    @aditya-ps1cd 13 ปีที่แล้ว +2

    Prof. Shevy! we love you!

  • @poiuwnwang7109
    @poiuwnwang7109 5 ปีที่แล้ว

    Very nice introduction, whch made me wathc the future lectures

  • @henryandrews55
    @henryandrews55 11 ปีที่แล้ว

    Great video on the basics of power, thanks.

  • @cinemification
    @cinemification 8 ปีที่แล้ว

    Thank u so much sir for upload such a useful video.

  • @Imrankhan4435
    @Imrankhan4435 8 ปีที่แล้ว +13

    i appreciate indian for uploading such amazing lecture ...May ALLAH gave you hedaya ....

    • @oneforallah
      @oneforallah 7 ปีที่แล้ว

      what is hedaya ?

    • @rahuladesh4260
      @rahuladesh4260 7 ปีที่แล้ว +2

      hedaya means terrorist attack

    • @oneforallah
      @oneforallah 7 ปีที่แล้ว +1

      allah give us a Terrorist Attack ??? Wtf is wrong with you people ?? Imran Khan

    • @abdelrahmangamalmahdy
      @abdelrahmangamalmahdy 7 ปีที่แล้ว +5

      "hedaya" is an Arabic word and it means guidance.
      Muslims normally say it when admiring somebody who's not Muslim. it's not related to terrorism at all!

    • @mohamedabdel-mageed6819
      @mohamedabdel-mageed6819 7 ปีที่แล้ว

      Hedaya means guidance to the right pass Brother. You can listen to Brother Zakir Naik, he explains a lot of things.

  • @26chauhangaurang41
    @26chauhangaurang41 2 ปีที่แล้ว

    Last 10 minutes are amazing!!🌟

  • @nugie10
    @nugie10 13 ปีที่แล้ว +1

    really nice program...good for others.thanks.

  • @sarahkerrigan7240
    @sarahkerrigan7240 9 ปีที่แล้ว +10

    good professeur ! Thank you from China

  • @kanupriyasharma3300
    @kanupriyasharma3300 3 ปีที่แล้ว +1

    India needs professors like you...

  • @akinolaeesuola9627
    @akinolaeesuola9627 6 ปีที่แล้ว

    Excellent piece of lecture and goods for all men. However, this would have been more helpful for people with less access to the internet, if only this can be use offline

  • @ayuba8
    @ayuba8 12 ปีที่แล้ว

    This is one good one. Thanks#

  • @deepaliss
    @deepaliss 13 ปีที่แล้ว

    Excellent lecture, thank you sir

  • @thetransferaccount4586
    @thetransferaccount4586 ปีที่แล้ว

    god level teacher.. don't miss

  • @syedarshidahmad
    @syedarshidahmad 2 ปีที่แล้ว

    Best lectures r from nptel

  • @dannyze85
    @dannyze85 13 ปีที่แล้ว +1

    thank you so much!!!

  • @shivaramuit
    @shivaramuit 12 ปีที่แล้ว

    Its really good ..

  • @varshaaruchamy9004
    @varshaaruchamy9004 7 ปีที่แล้ว

    great lectures

  • @santhoshshridhar9359
    @santhoshshridhar9359 6 ปีที่แล้ว

    Happy Teachers day sir...

  • @mrjagan1
    @mrjagan1 13 ปีที่แล้ว

    thxxxx alotttt sir ,this information helps me alottt

  • @ShafiqIslam
    @ShafiqIslam 7 ปีที่แล้ว

    Thank u sir ... thank u very much

  • @PrashVerse
    @PrashVerse 5 ปีที่แล้ว

    Nice work 👏👏👏

  • @oracleofottawa
    @oracleofottawa 10 ปีที่แล้ว

    Thank you very much....

  • @kremlinmoscowstaling
    @kremlinmoscowstaling 16 ปีที่แล้ว

    you are absolutely correct.

  • @riseabovehate9476
    @riseabovehate9476 5 ปีที่แล้ว +9

    FOR LORD SHIVA'S SAKE. PLEASE UPLOAD HIGH RESOLUTION VIDEOS

    • @peopleshouldknow1
      @peopleshouldknow1 3 ปีที่แล้ว +2

      nice but its been many years right at that time only 2.5g was availale so i think this is the reason

  • @abhishekjha3782
    @abhishekjha3782 4 ปีที่แล้ว

    Legend🙏🙏

  • @dumbledore3022
    @dumbledore3022 2 ปีที่แล้ว

    I couldn't find the full pdf copy of Electromagnetic waves by Shevgaonkar on the internet. Many pages show "you have either reached a page that is unavailable for viewing limit for this book" in that pdf. I couldn't afford to buy this book. If anyone has the full pdf copy of this book, please share.
    Thanks and Cheers!

  • @donberg01
    @donberg01 6 ปีที่แล้ว +1

    Needs to be in HD for better resolution & definition .Graphs are hard to read, even for my MAC!

  • @deepustr1
    @deepustr1 13 ปีที่แล้ว +1

    he has written a text book titled "electromagnetic waves". those who find these lectures useful can refer this text book.

  • @199alexman
    @199alexman 7 ปีที่แล้ว

    thank you

  • @Geckuno
    @Geckuno 13 ปีที่แล้ว

    @essedra hangi üniversite?

  • @saikatdey9395
    @saikatdey9395 9 ปีที่แล้ว

    Thnak you sir

  • @matthewhorgan3846
    @matthewhorgan3846 9 ปีที่แล้ว

    very useful, I've shared for a friend.

  • @RajWankhede
    @RajWankhede 11 ปีที่แล้ว +3

    Please sir, do me a favor.
    Name the topics of each lecture in the label if possible.
    thank you.

  • @natureviewer6098
    @natureviewer6098 6 ปีที่แล้ว

    Thanks sir from Pakistan

  • @kalumprasannaHW
    @kalumprasannaHW 12 ปีที่แล้ว +1

    TedTALk very useful site.

  • @KaimeraPk
    @KaimeraPk 9 ปีที่แล้ว

    Essentially one could use this for the drinking game use essentially for the novice drinkers and one for the pro's lol. It is a great educational video also btw don't think i'm dissing it just because i though it was funny how many times he says one =).

  • @totonono2007
    @totonono2007 16 ปีที่แล้ว

    good job

  • @eeranand
    @eeranand 16 ปีที่แล้ว

    very good

  • @strengthsquarefitness384
    @strengthsquarefitness384 7 ปีที่แล้ว +7

    sir plz make these videos to be saved offline

  • @madhavrabinbipin2116
    @madhavrabinbipin2116 3 ปีที่แล้ว

    my professor

  • @inertialcapacity
    @inertialcapacity 15 ปีที่แล้ว +1

    C1 R = A/L not rL/A -- why? because electrons flow according to mv-squared rules. And in those rules a fluid in a thin pipe flows faster -- but electric theory says there is less flow in a thin conductor -- there are fewer electrons but they are moving faster; but when more electrons are in a CSA they move slower: naturally. So we need simpler theory to replace the current lies. You can see for yourself it is logicallyand actually impossible for a meter to measure BOTH voltage and current.

  • @sarahkerrigan7240
    @sarahkerrigan7240 9 ปีที่แล้ว +3

    25:40, there are Chinese titles on the slides :)

  • @in2sun275
    @in2sun275 7 ปีที่แล้ว +5

    sir give lecture according to gate syllabus then there will be no going to coachung
    '

  • @anonym0us__537
    @anonym0us__537 3 ปีที่แล้ว

    Wow it's a 12 years old video 👏

  • @vietteen1988
    @vietteen1988 13 ปีที่แล้ว +1

    hello! xin chào, tôi đến từ Việt Nam

  • @ElizabethGreene
    @ElizabethGreene 9 ปีที่แล้ว

    Is there a recommended textbook for this course?

    • @ElizabethGreene
      @ElizabethGreene 9 ปีที่แล้ว

      Mossaab Benz
      Thank you very much, I am in your debt.

    • @tabanfakhrakhurram
      @tabanfakhrakhurram 9 ปีที่แล้ว +1

      Elizabeth Greene D. K. Cheng is a good book for the course.

  • @rajunamachinaveerrajunama
    @rajunamachinaveerrajunama 15 ปีที่แล้ว

    good

  • @ahnamus
    @ahnamus 9 ปีที่แล้ว

    Does this topic require knowledge of Nonlinear Dynamics and Chaos ?

    • @tabanfakhrakhurram
      @tabanfakhrakhurram 9 ปีที่แล้ว

      ahnamus nope. but it requires knowledge of complex analysis and multi variable calculus.

  • @Ganjin88
    @Ganjin88 14 ปีที่แล้ว

    @infraredtechnician yea, man. This guy explains stuff better than my professor for EM.
    It's sad how my professor wants us to memorize stuff instead of learning. I rather learn to be honest. But then again, don't want to fail the class so yea.

  • @adcoal
    @adcoal 13 ปีที่แล้ว

    @VNNN08 ..i guess there r better ways to communicate with
    ur feedback ......dont overlook the subject matter richness...:)

  • @mdkalimullah4207
    @mdkalimullah4207 5 ปีที่แล้ว +3

    Pls improve video quality and make download ofline

  • @sajankrsaurav8252
    @sajankrsaurav8252 4 ปีที่แล้ว

    can someone provide me notes?

  • @rameshranjan137
    @rameshranjan137 3 ปีที่แล้ว

    Sir pdf milega kya iska

  • @kremlinmoscowstaling
    @kremlinmoscowstaling 16 ปีที่แล้ว

    all comments except for the "you are absolutely correct comment" are for Itamil.

  • @pedrorojas8179
    @pedrorojas8179 10 ปีที่แล้ว

    keep uploading subtitles for course plis......these lectures are great but we need subtitles to understand everything!

  • @hliu376
    @hliu376 16 ปีที่แล้ว

    at least he have occasional long pause so you can think about what he said. lol

  • @TheBustanji
    @TheBustanji 12 ปีที่แล้ว

    pleas if u could add some subtitle

  • @mr.zenoh.2560
    @mr.zenoh.2560 7 ปีที่แล้ว

    can u refer me a book

    • @jayparekh1307
      @jayparekh1307 7 ปีที่แล้ว

      he has written a book named ELECTROMAGNETIC WAVES. You may find it on flipkart

  • @ksa1290
    @ksa1290 14 ปีที่แล้ว

    شوو يقول

  • @rajunamachinaveerrajunama
    @rajunamachinaveerrajunama 15 ปีที่แล้ว

    extraodinary

  • @oldpretoriagmailcom
    @oldpretoriagmailcom 10 ปีที่แล้ว

    i am from india

  • @kremlinmoscowstaling
    @kremlinmoscowstaling 16 ปีที่แล้ว

    comments made by me are intended towards Itamil.

  • @joelprakash
    @joelprakash 11 ปีที่แล้ว

    sir i want information on transmission lines

  • @M1A2_Abrams_MBT
    @M1A2_Abrams_MBT 10 ปีที่แล้ว

    Do we really need to watch all 60 lectures to understand the basics of transmission lines and EM waves?

    • @gourangabala
      @gourangabala 9 ปีที่แล้ว

      depends on how much depth u want to acquire ...

    • @kakarottosom2505
      @kakarottosom2505 9 ปีที่แล้ว

      these lectures are for every one whatever be their level of knowledge, interest or intelligence..

    • @ElizabethGreene
      @ElizabethGreene 9 ปีที่แล้ว +2

      No. The course starts with Transmisison Lines and proceeds to Maxwell's Equations, Uniform Plane Waves, Reflection/Refraction from Media, Parallel Plane Waves, Rectangular Waveguides, Basics of Antennas, Hertz Dipole linear Antennas, and Antenna Arrays. He talks about the syllabus in Lecture 1 around 40:00

    • @M1A2_Abrams_MBT
      @M1A2_Abrams_MBT 9 ปีที่แล้ว

      I appreciate it. Thanks.

  • @ukbang2007
    @ukbang2007 15 ปีที่แล้ว

    Please fast-forward if you do not like what you hear/see instead of asking the majority to make allowances for you. Anyway, it is not a prayer, more of a quote.

  • @Rohit-tz6gs
    @Rohit-tz6gs 4 ปีที่แล้ว

    The lecture is enough to have a deep sleep.

  • @ltamil
    @ltamil 16 ปีที่แล้ว

    I am amazed to see prayer song before the commencement of lectures in all videos made by IIT-Madras. Harvard per se is a Christian institution and do you see any such distractors in their publications? In the best interest of the nation, the prayer song should be removed so that we enjoy science and technology and not the propaganda of religious beliefs. It presents IIT-M faculty and Management in bad light. I sincerely hope IIT-M takes this comment seriously and reforms itself. Cheers

    • @utkarshsrivastava6304
      @utkarshsrivastava6304 ปีที่แล้ว

      Have you ever tried to understand the meaning of that prayer or only you know how to vomit poison?

  • @invincibleramesh
    @invincibleramesh 16 ปีที่แล้ว

    LOLZ he is speak at the rate of 5 WPM.

  • @md.abdullahalkawsar5841
    @md.abdullahalkawsar5841 9 ปีที่แล้ว

    poor video Quality of the slide

  • @darkzz9
    @darkzz9 11 ปีที่แล้ว

    worthless if u rly want to feel the beauty of physcs or elctrmgntsm....

  • @tinkywinkypoo
    @tinkywinkypoo 16 ปีที่แล้ว

    yeah, he speaks too slow. no wonder its a 51 minute vid. good content though

  • @VNNN08
    @VNNN08 13 ปีที่แล้ว

    you need to improve your english sir.....

  • @darkzz9
    @darkzz9 11 ปีที่แล้ว

    india's tchrs hv rly poor teaching skills.....---coming frm an indian

    • @srividya6263
      @srividya6263 6 ปีที่แล้ว +2

      darkzz9 can u really be so stereotype.. do u know s radhakrishna ?

  • @cinemification
    @cinemification 8 ปีที่แล้ว

    Thank u so much sir for upload such a useful video.