Amplitude Modulation (Definition, Basics, Derivation, Frequency Response & Waveforms) Explained

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In 18 minutes you taught more than what my teacher couldn't explain in 1 hour lecture

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@@EngineeringFunda Sure Sir and Thank you so much

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Me also bro

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Absolutely bro...yea in my class the lecturer just read this derivation and skipped to the other topic without telling where is this caming from.. really we want this type of lecturers in our college.. without concept how we will became an engineer 😀

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Our lecturer just skipped all the derivations😢 And tomorrow is exam😢☹

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Thnkew sir bcoz of ur effort i scored 9 out of 10 in analog theory paper in my semester exam thnx alot. Keep supporting us

[@kalpanabisht8160]

Are bhaiya ek baata do aap am modulation m power or time nhiii nikalna unka relation

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Kya Bhai job mili? 4 saal ho gaye comment kiye.

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Same from my side.

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Amazing traditional way of explaining. That's what I look for. Thanks a lot

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[@mohammadzakariya0007]

00:02 Explanation of Amplitude Modulation 02:29 Amplitude modulation involves changing the amplitude of the carrier signal with respect to a modulating signal. 04:39 Amplitude Modulation involves changing carrier signal amplitude with message signal. 06:52 Amplitude modulation is represented by the equation AC(1 + mu*sin(OmegaMT)*sin(OmegaCT)). 09:58 Amplitude modulated signal has three frequency components. 12:40 Amplitude modulation involves carrier signal, side bands, and waste of power. 14:52 AM has drawbacks like higher bandwidth and power requirement 16:42 Amplitude modulation involves sending carrier signal and sideband signals. Crafted by Merlin AI.

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@Mr: your welcome

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sir dil se danhyabad ye chapter jee ke sbhi baccho ka dimag khata hai par ise mast clear kiya hai maine isse friends me share bhi kiya

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Your welcome

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Thank you so much, this is helpful.

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i watch this video from turkey thank you very mach you are a great techear

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[@bhavya2301]

Easy to understand and well explanatory.ThankYou sir

[@iluxLove]

Thank you! This made more sense than 3 hours of my Coms professor lol

[@1973jdmc]

DITTO

[@dipink7142]

Yeah

[@ECB-SanjayReddy]

this man nailed it....thanks sir!!!

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Very Nice Explanation with Good Reasons for every question….Thank You Sir

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Tq u so much for this vedio sir .....very useful and helpful..... 🥰

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[@lizchaitanya]

Sir, I have doubt. Why is the bandwidth increased a drawback?

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The best way of learning than anyone else

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GOOD AND SUFFICIENT EXPLANATION SIR

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[@noorbagrivirtualacademy3535]

Awesome Explanation about modulation topic Sir ...👍👍📗🖊❤

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Clear and concise!!

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Thank you!!!! You are doing amazing work!

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Excellent effort and explain well 👌👌👌

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Thanks you soo much sir it will be helpful in msc physics 🙏🙏

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This is in MSc also?

[@madhavithorvat6803]

Best explanation 👍🏼 Thanks Sir

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Very spr teaching.. I m class 12

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[@xr55]

Explained very well. 👏🏼👏🏼👏🏼👏🏼👏🏼👏🏼👌🏼💯

[@EngineeringFunda]

Glad it was helpful!

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Nice explanation sir 👍👍

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[@udaykirantheegala439]

Amazing explanation

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[@035_reetojagupta7]

wonderful teaching

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[@asbaamir4755]

Quite helpful, keep uploading such lucid videos and stay blessed

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[@talatamdharmasimha7872]

Superb explanation sir 😍

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[@talatamdharmasimha7872]

@@EngineeringFunda sure sir iam sharing your Evey playlist related to ece department to my friend groups

[@veekm5905]

one thing you can highlight is that the Carrier wave is sampling the signal m(t) so AM is by its very natue lossy/interpolated-between the peaks of the carrier

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Thanks

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@@EngineeringFunda really like your videos - I feel like crying now because I wish I had you as my teacher in school/college. I love electronics and did not understand many things and you are a very good teacher

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very very good lecture. thank you

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I will

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@@EngineeringFunda yes I shared the video. You are an awesome teacher

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Thanks Bro Keep up the good work

[@Harshgupta-ht8pr]

Sketch the specturm of modulating signal m (+) given by a.m (+)= cos 2pi ×3×10^3t+ cos 8pi ×10^3t B.cos2pi×10^3t x cos2pi ×4×10^3t Plot the two sided amplitude spectrum in both cases

[@pranavc4397]

it's looks cumbersome if you look those components in sinusoids. Better convert cos components into exponentials using Euler's theorem and then use time shifting property of fourier transform to convert those into frequency domain Then you can have frequency response in 3 steps

[@Dannydawson537]

Harsh gupta wow you really know your stuff can you please help me with some questions please about RF

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thank you sir ,very very use full

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Very best lecture❤️

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Thanks for the video!

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😯Awesome

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best channel 🙏🙏🙏

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😍thank u sir .u explained it very simply

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Thanks and welcome

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So Helpful. .....Thanks a lot 😊

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Sir it aswm best teaching

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Thank you so much for this video :) !

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THANKS A LOT 🎉

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Great lecture sir

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great teacher 🔥

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Great video ❤️

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Your welcome 🙏

[@2002yeunglau]

13:44 You represent the y(t) in three discrete cosine wave. By fouier transform it transfers to delta function with amp= pi*mu*Ac/2 , rather than just mu*Ac/2? and also there are -Wc-Wm, -Wc, -Wc+Wm in negative side rather just positive side ? By the way thanks for lecture you are 200% better than my lecturer in my university.

[@duyanh1823]

very helpful. thank you Prof.

[@EngineeringFunda]

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[@swatichauhan2106]

sir the signal to be transmitted in comms is known as modulating signal or carrier signal ? And thank u sir for this boom playlist 🔥

[@EngineeringFunda]

Transmitted signal is Modulated Signal

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Your class is soo good. I need linear control system

[@EngineeringFunda]

I have made complete control engineering

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@@EngineeringFunda ok thank-you that will save me.

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you are just great!!!

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thank you for making video. it is so helpful me

[@AdrianVazquez-qn1zm]

This is great! Learned the concept better than in lecture. I just wish you derive dthe Frequency Domain representation using the Fourier Transformation. Other than that, super helpful!

[@EngineeringFunda]

Your welcome 🙏

[@bowenzhang4471]

Great explanation, thank you

[@EngineeringFunda]

Glad it was helpful!

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thank you sir..good teacher

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You saved my exam🥹🤝

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[@jorialand]

Very useful explanation (y)

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Nice explanation

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[@telutron9755]

In 6:33 ,why it is only Ac ,but not AcsinWct ,like that of m(t)

[@AhamedKabeer-wn1jb]

Superb sir....

[@EngineeringFunda]

Love and happiness of students is my ultimate goal, God bless you 🙏, keep learning and keep progressing.

[@moiz6164]

At 3:22 why didn't the modulated signal underwent a phase shift ? I mean the sine wave has its magnitude in positive and negative cycle both , so multiplying with the carrier signal should've resulted in a phase shift of 180 degrees ??..

[@EngineeringFunda]

But here we are deal with to see the envelope for detection of AM signal

[@te083tejaspatil8]

thank u for your efforts

[@asifahmad5631]

Sir please upload a video of "amplitude modulation generation using amplifier circuits".

[@Dannydawson537]

Asif Ahmad sir please can you help me with some questions? About radio frequency’s

[@TM-jx6et]

Thankyou sir ❤️

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[@Ehmedbaz]

Thank you alot ❤

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[@stefencharles4096]

Thanks Sirji

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[@lifeofmsk3858]

Please suggest the chapter to read from any standard text book to better understand and practice this lesson , or provide your notes

[@Amazingmoonshine]

Tqew sir best explanation

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[@talhalaiq6452]

great video..

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[@siddharthbharmoria1278]

thankyou for making me understand this !

[@soumyapriyadarshidas8345]

You did really well.but please arrange all the videos serially.

[@rishabhbahoria1298]

Hi sir ! i really admire your work, what you are doing is great !! i would like to suggest you that, it will be better for us(student) if you stop tempering with the standard term... for example here you have taken sinwct as a carrier signal though the standard books consider coswct as the carrier signal, i suppose that, to add your touch you have consider sinwct as carrier signal, so far nothing wrong. Thinks goes wrong when you add up with the standard notation, and yes you did add up here and hence commiting a mistake here at 13:30 you are plotting the ampiltude plot over but what i feel is its a Magnitude plot, i hope you definately know the difference between Ampiltude and Magnitude but still i would like to take the honours to recall the difference between amplitude and magnitude. Amplitude can be Greater, Lessor or Equal to Zero and Magnitude is always Greater or Equal To Zero that means it is always positive (expext exactly equal to zero). Here in the amplitude plot at 13:30 you have plotted (wc+wc) amplitude as positive but clearly in the equation it has a negative sign hence the strength of the signal should be Negative. But that is what we don't see in this video lecture, Sir there are 150,114 views on this video but i wander how many of us have catch this crucial point here in this video. similary i have also seen some of your add up touches in standard signal in EMF in cordinate system and in the next lecture of in going playlist, you have mentioned MODULATING INDEX again and again, If you google Modulating Index what you will know is its MODULATION INDEX not Modulating Index. please sir i humbly request you to use the standard notation and definition as they are..........................................

[@EngineeringFunda]

1. You can take sine or cosine as carrier signal. 2. In plot of Amplitude vs frequency, you can never plot negative Amplitude, I don't know what you talk about differences in between Amplitude and magnitude. 3. Modulation index and Modulating index are same, it could be easily understood. But as you said we should mention it like Modulation index.

[@rishabhbahoria1298]

@@EngineeringFunda amplitude vs frequency as in the video you have plotted you did'nt mentioned that in amplitude and frequency plot we only consider the the magnitude value of the amplitude. And Sir, as you are telling "Amplitude vs frequency, you can never plot negative Amplitude" . Sir what i know is that one can definately plot Negative amplitude in amplitude vs frequency plot, what you just have to do is to take the Amplitude in dBm by doing that, we can plot the negative amplitude as well..... we should mention it like Modulation index. yes sir we should mention it as Modulation index. Because if we go by the deep meaning of the word they are found to be different.

[@EngineeringFunda]

In dB if it is Negative means it is less then 1, it doesn't mean it is negative, it means it is in between 0 to 1. You can see, I have mentioned that it is a plot of Amplitude vs frequency

[@prajwalh8823]

Thanks alot sir

[@EngineeringFunda]

Your positive comments motivates me. Teachers like me just wants positive comment from student. Love from you guys means a lot to me. My goal is to create largest community of engineers in entire globe. Please help me by sharing this playlist with your friends.

[@anishkumargiri9490]

sir kindly create a video lecture on Time Domain representation of AM signal(expression derived using a single tone message)

[@EngineeringFunda]

It is already explained here in playlist of analog communication

[@anishkumargiri9490]

@@EngineeringFunda ok sir thankyou so much sir for your kind reply😊

[@spykespark8477]

Thank You very Much

[@EngineeringFunda]

Your welcome

[@saiprakashputrevu7512]

Sir... For plotting frequency response, we need to apply fourier tramsform.. But you took the same timedomain amplitudes as frequency domain amplitudes which may not be equal...

[@EngineeringFunda]

It is there in frequency domain only

[@EngineeringFunda]

See practically it will slightly less then theoritcal but I have shown it correctly

[@pranavc4397]

There is nothing wrong in that. Fourier transform is one method of plotting the frequency response of a time domain signal but it's not the only method we currently have. In above video,signals of constant frequency has been taken as an example so we can directly plot the frequency response by intuition, ie. an impulse of amplitude same as signal amplitude at a frequence 20Hz(example). If you look closely above frequency response is discrete in nature and can be obtained mathematically by Fourier Series.

[@narasimhal1]

​@@pranavc4397​Frequency Response (Magnitude and Phase spectrum) are differ from visualization of signal strengths at their oscillating frequencies!

[@pranavc4397]

@@narasimhal1 It's not clear what you meant by "differ from visualization". Don't make it complex than it looks. Just apply phasor diagram or apply euler's theorem.

[@boxergalaxo]

thank you soo much !!!

[@EngineeringFunda]

Your positive comments motivates me. Teachers like me just wants positive comment from student. Love from you guys means a lot to me. My goal is to create largest community of engineers in entire globe. Please help me by sharing this playlist with your friends.

[@ozonewagle]

Sir. When drawing that frequency spectrum. I have seen somewhere Ac/2 is taken for carrier but you have taken Ac. I didnt get

[@ShreyaKadam-ei3is]

❤❤❤❤❤❤❤❤❤

[@EngineeringFunda]

Your Appreciations, care and share matters a lot to me. #EnginneringLove. All the subjects playlist of Engineering Funda is available in comment section. Share it with your friends to support us. Your positive comments motivates me and person like me get boosted by my students feedback. Thanks and welcome 🙏

[@ShreyaKadam-ei3is]

👍

[@amirharsat2224]

What happen's when your modulated signal is composed such as m(t)= 2Cos(400t)+4Sin(500t+pi/3) that mean that the Am is 2 ? what about the Omega and the phase shift ?

[@Dannydawson537]

Amir Harsat please can you help me with some questions about RF I’m from the uk 🇬🇧 and need some help from a expert

[@Venkateswarlu384]

Sir explain about analog pulse modulation schemes (PAM,PPM, pulse time modulation, pulse duration modulation and demodulations) and also about NATURAL SAMPLING and FLAT TOP SAMPLING please make a video sir

[@EngineeringFunda]

Go through my playlist of digital communication

[@Venkateswarlu384]

@@EngineeringFunda sir there is no video on pulse time and pulse duration modulation

[@vee_2412]

This was great! Thank you!

[@EngineeringFunda]

You're so welcome!

[@gnaneswarnaidu1520]

6:34 ....u should add only amplitudes... But why did u add (amplitude +whole signal)

[@EngineeringFunda]

Its Amplitude Modulation

[@Drishtikon3]

@@EngineeringFunda i didn't get it

[@chaitanyabolli8191]

I think amplitude is changing w. r. t. Time therefore we can't just add amplitude bcoz it's not fixed so that we can add it but it is changing with time hence we have to ad while equation

[@sixmonthssleep3057]

Nice one!

[@EngineeringFunda]

Your positive comments motivates me, Thanks and welcome 🙏

[@kushalswarup2662]

sir Ac is there ,why did you write just A ? at 11:20. please clarify

[@EngineeringFunda]

At 12:00 it is already explained

[@kushalswarup2662]

@@EngineeringFunda ok thank-you sir

[@sohinipaul2429]

I have a confusion.. In the frequency response, the amplitude, wouldn't that be πAm/2 for sidebands?

[@EngineeringFunda]

Its perfectly correct in this video.

[@sohinipaul2429]

Then sir, when we find the fourier transform of the signal and plot the frequency response, isn't the amplitude of sidebands πAm/2 ?

[@sohinipaul2429]

Ohh sorry, u've shown the frequency response using Fourier Series isn't it?