ISRO , SCIENTIST/ENGINEER
(AIR-8)  ISRO,  E & T Engineer,
 Always remember you are different from others( If u Think u Can )

Rahul Pathak

This is most important subject  for Electronics and electrical students , mostly question comes in exams from this subject, and here i will explain all basics and good question which will help you in examination

GATE (Graduate Aptitude Test in Engineering) 2020 & 2021 complete preparation with best educators. Know about the detailed syllabus, best books, exam pattern and dates, previous year question papers a

GATE & ESE

Hindi

(Hindi) Analog Communication for GATE, ISRO, ESE

Amplitude Modulation

Communications

GATE & ESE - EE, EC

GATE, ESE and IIT-JAM

Ace the toughest competitive and government exams in India 

Test Preparation

Overview of Topics for analog communication

Overview of Subject - Analog communication for GATE, IES, ISRO (in Hindi)

Basics of need of modulation , bandlimiting process, Fourier transform ,

Basics for Analog Communication(Part-1) ( Need for Modulation , Fourier, Bandlimiting Process)

Concept of modulation, modulation property of Fourier transform.

Basics of AM (PART-2)(Duality Property, Impulse Signal, Concept of Modulation, Modulation Property)

Parseval theorem for energy and power, frequency spectrum , Fourier series and Fourier transform

Basics for Analog communication(Part-3)( Fourier Series,Frequency Spectrum,F.T., Parseval's Theorem)

Quadrature filter and hilbert transform , impulse response and transfer function , LTI response , convolution process

Basics of communication (Part-4)Impulse Response,Frequency Response of LTI System,Hilbert Transform

types of amplitude modulation , frequency spectrum of AM, properties

Amplitude Modulation important concept Part-1(GATE, ESE, ISRO)

Power of Modulated signal , Modulation index , uper and lower side band, important formula

Amplitude modulation Concept part-2 ( GATE, ISRO, ESE)

efficiency (n) or modulation efficiency , Drawback of AM, power distribution in Amplitude modulation

Amplitude modulation concept Part-3 (GATE, ESE, ISRO)

Amplitude modulation previous year important question

PART-4 Exam oriented Amplitude Modulation problem(GATE, ISRO, ESE)

Important question , idea of envelop detection, importance of carrier signal in Ordinary Amplitude modulation.

Amplitude Modulation concept (Part-5) Important previous years questions, idea Envelop detection.

Amplitude Modulation (Part-6) Multitone Amplitude modulation, Important Exam questions

Power in multitone Modulation ,important previous years questions.

AM (PART-7)Power in multitone Modulation , important previous years questions(GATE, ESE, ISRO)

Concept of Critical, under, overmodulated signals.

Amplitude Modulation (Part-8)Critical, under, over Modulation concept, Important questions

square law modulator concept for amplitude Modulation

Square Low Modulator concept(Part-1), square low demodulator concept ( GATE, ESE)

Square Law demodulator , Harmonics distortion

Square Law modulator (Part-2), Harmonics destortion , demodulation(SLD)Previous years Questions

Harmonics distortion , Envelope detector, Important previous years Questions.

Envelope detector concept (Part-1)

Double sideband suppress carrier concept , comparison with DSB-FC, modulation index concept, revision of previous concept.

Double Side band Full Carrier(DSB-SC) PART-1

Generation of DSB- SC signal, Balance modulator

DSB-SC Modulation (PART-2), generation of DSB-SC Modulated signals

ring Modulator , Synchronous detector , Previous question.

DSB-SC Modulation (PART-3), ring modulator , synchronous detector

Frequency Division multiplexing ( ISRO , ESE, GATE)

SSB-SC, Frequency discrimination method , phase discrimination or phase shifter method.

Single side band Suppress carrier ( SSB-SC) Modulation (PART-1)

General form of SSB-SC , power saving in SSB-SC, important points.

SSB-SC (PART-2)

Drawback of frequency discrimination method, Why SSB -SC Limited to voice signal

SSB-SC (PART-3)

De-modulation of SSB-SC, No phase synchronization , Quadrature null effect, important point

SSB-SC (PART-4)

Concept of VSB modulation, generation and demodulation of VSB

Vestigial Side band (VSB) modulation

Hilbert Transform and its properties

Analytical signal , envelope understanding

Concept of Pre envelope and complex enevelope

Angle modulation concept , FM and PM definition

Angle Modulation (Part-1) introduction

Frequency Modulator , frequency deviation , frequency swing , important Questions.

Angle modulation (Part-2) , frequency Modulator

Modulation index, FM expression, NBFM, WBFM, single tone modulation

Angle Modulation (Part-3)

Expression of NBFM, comparison between NBFM and AM (frequency Spectrum).

Angle Modulation (Part- 4)

Bessel function introduction , properties of bessel function , Wide band frequency Modulation expression.

Angle Modulation (Part-5)

Carson rule(Bandwidth of FM),spectral analysis of WBFM

Angle Modulation (Part-6)

Calulation of power for FM(NBFM, WBFM), important previous year Question.

Angle Modulation (Part-7)

Angle Modulation (Part-8)

Generation of FM , Direct and Indirect (Armstrong method), Introduction of frequency Multiplier

Angle modulation (Part-9)

Phase modulation , Previous year questions , Demodulation of  FM

Angle Modulation (Part-10)

Angle Modulation (PART-11)

Phase looked loop (Part-2), important objective questions.

Angle Modulation (Part- 12)

Demodulation , Generation of PM from FM & vice Versa, Maximum Phase and frequency deviation of FM &PM signal

Angle Modulation (Part-13)

Important previous year questions, multi tone FM,

Angle Modulation (part-14)

Questions based on indirect Method(Armstrong Method)

Angle Modulation (Part-15)

Tuned radio frequency Receivers,AM Receivers, Drawback of TRF

Receivers (PART-1)

Characteristic parameter of Receivers, introduction of Mixer operation , Up conversion and down conversion.

Receivers (Part-2)

Super heterodyne Recievers (SHD), Intermediate frequency , Mixer

Receiver (Part-3)

Image frequency , suppression of image station, example

Receiver (Part-4)

Image Rejection Ratio(IRR), previous years questions

Receiver (Part-5)

Introduction of pre Emphasis and D-Emphasis

Receiver (Part-6)

Pre-Pre-Emphasis and D-Emphasis, FM receivers

Receiver( Part-7)

Vishal Soni

In this course various parameters of random variable and their relation with probability will be discussed .
This topic is important for GATE and ESE aspirants of E and T branch.

Probability and Random Variable

I am an E&Tc Engineer, technical freelancer, I like to teach, write, explore new places. 

Vinod Singh Jadon

This course covers Random variabes one of the important topics of communication systems in electronics engineering curriculum and for  various engineering competitive exams as well.

Random Variables

I did my B.Tech in ece from NIT Bhopal.I am interested to share my knowledge so that it can be useful for others.

Kesava Govindu

In this course, Kesava will discuss Amplitude Modulation. This course will cover modulation index, generation of amplitude modulation, demodulation and other topics. This course targets GATE aspirants.

Amplitude Modulation for GATE Exam

Anmol is a passionate teacher and researcher. He is graduated from IIT Kanpur and having 7+ years of teaching experience.

Anmol Jain

This course is a 4 hours course which summarizes all concepts,tricks and important question for gate examination.

Crash Course on Amplitude Modulation : GATE

B.E. ECE, GATE qualified. 
I'm making videos as I learn, the little thing that I do for myself and aspirants like me.



Abirami S

In this course educator will discuss about
Important concepts in angle modulation is covered along with previous year GATE problems

Angle Modulation (Quick Revision and Solved Problems) - GATE (ECE)

Sakshi Tripathi

This course is on Digital Passband Modulation. It consists of Binary Modulation Techniques. This course will be beneficial for GATE aspirants.

Lessons

49 lessons • 11h