GATE 2025 Electronics & Communications Engineering Syllabus PDF - Download GATE Electronics & Communications Engineering Syllabus Topic wise

Updated By Prateek Lakhera on 24 Jan, 2025 18:12

IIT Roorkee has released the GATE 2025 syllabus PDF for all 30 papers. There have been no changes in the GATE syllabus 2025. Access the GATE syllabus for CSE, ME, Civil Engineering, Mechanical Engineering and other papers here.

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GATE 2025 Syllabus for EC

IIT Roorkee has released the GATE 2025 Electronics and Communication Engineering sylllabus at gate2025.iitr.ac.in. The GATE 2025 syllabus for EC includes 8 sections namely Engineering Mathematics, Networks, Signals and Systems, Electronic Devices, Analog Circuits, Digital Circuits, Control Systems, and Communication and Electromagnetic. GATE syllabus 2025 for ECE is divided into three sections namely Engineering Mathematics, General Aptitude, and core ECE disciplines. The core topic syllabus accounts for 72% of the exam, while Engineering Mathematics accounts for 13% and General Aptitude for 15%. You must refer to the official GATE syllabus PDF for EC only for exam preparation. While studying the GATE syllabus 2025 understand the concepts well and practice numerical questions. 

The GATE Electronics and Communication Engineering question paper consists of 65 questions, about 45 of which are from the syllabus of the ECE core topic. You must thoroughly analyze the syllabus and GATE exam pattern 2025 and make your study plan likewise. If you choose ECE as your first exam, you can then choose from CS, EE, IN, or PH for the second paper.

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GATE EC Syllabus 2025 Section-Wise Topics

GATE Electronics and Communication Engineering syllabus 2025 includes 8 sections. You can go through the detailed GATE EC syllabus 2025 given below. 

Section 1: Engineering Mathematics

Subjects

Chapters

Linear Algebra

Vector space, basis, linear dependence and independence, matrix algebra, eigenvalues, and eigenvectors, rank, solution of linear equations - existence and uniqueness.

Differential Equations

First-order equations (linear and nonlinear), higher order linear differential equations, Cauchy's and Euler's equations, methods of solution using a variation of parameters, complementary function and particular integral, partial differential equations, variable separable method, initial and boundary value problems.

Calculus

Mean value theorems, theorems of integral calculus, evaluation of definite and improper integrals, partial derivatives, maxima and minima, multiple integrals, line, surface and volume integrals, Taylor series

Complex Analysis

Analytic functions, Cauchyโ€™s integral theorem, Cauchyโ€™s integral formula, sequences, series, convergence tests, Taylor and Laurent series, residue theorem.

Vector Analysis

Vectors in plane and space, vector operations, gradient, divergence and curl, Gauss's, Green's and Stokesโ€™ theorems.

Probability and Statistics

Mean, median, mode, standard deviation, combinatorial probability, probability distributions, binomial distribution, Poisson distribution, exponential distribution, normal distribution, joint and conditional probability.

Section 2: Networks, Signals and Systems

Subjects

Chapters

Circuit Analysis

Node and mesh analysis, superposition, Thevenin's theorem, Nortonโ€™s theorem, reciprocity. Sinusoidal steady state analysis: phasors, complex power, maximum power transfer. Time and frequency domain analysis of linear circuits: RL, RC and RLC circuits, solution of network equations using Laplace transform. 

Linear 2-port network parameters, wye-delta transformation.

Continuous-time Signals

Fourier series and Fourier transform, sampling theorem and applications.

Discrete-time Signals

DTFT, DFT, z-transform, discrete-time processing of continuous-time signals. LTI systems: definition and properties, causality, stability, impulse response, convolution, poles and zeroes, frequency response, group delay, phase delay

Section 3: Electronic Devices 

Energy bands in intrinsic and extrinsic semiconductors, equilibrium carrier concentration, direct and indirect band-gap semiconductors.

Carrier Transport: Diffusion current, drift current, mobility and resistivity, generation, and recombination of carriers, Poisson and continuity equations. P-N junction, Zener diode, BJT, MOS capacitor, MOSFET, LED, photodiode and solar cell

Section 4: Analog Circuits

  • Diode Circuits: Clipping, clamping, and rectifiers.

  • BJT and MOSFET Amplifiers: Biasing, AC coupling, small signal analysis, frequency response. Current mirrors and differential amplifiers.

  • Op-amp Circuits: Amplifiers, summers, differentiators, integrators, active filters, Schmitt triggers, and oscillators

Section 5: Digital Circuits

Subjects

Chapters

Number Representations

Binary, integer and floating-point- numbers. Combinatorial circuits: Boolean algebra, minimization of functions using Boolean identities and Karnaugh map, logic gates and their static CMOS implementations, arithmetic circuits, code converters, multiplexers, decoders.

Sequential Circuits

Latches and flip-flops, counters, shift-registers, finite state machines, propagation delay, setup and hold time, critical path delay

Data Converters

Sample and hold circuits, ADCs and DACs.

Semiconductor Memories

ROM, SRAM, DRAM.

Computer Organization

Machine instructions and addressing modes, ALU, data-path and control unit, instruction pipelining

Section 6: Control Systems 

Basic control system components; Feedback principle; Transfer function; Block diagram representation; Signal flow graph; Transient and steady-state analysis of LTI systems; Frequency response; Routh-Hurwitz and Nyquist stability criteria; Bode and root-locus plots; Lag, lead and lag-lead compensation; State variable model and solution of state equation of LTI systems.

Section 7: Communications 

  • Random Processes: Autocorrelation and power spectral density, properties of white noise, filtering of random signals through LTI systems. 

  • Analog Communications: Amplitude modulation and demodulation, angle modulation and demodulation, spectra of AM and FM, superheterodyne receivers. 

  • Information Theory: Entropy, mutual information and channel capacity theorem. 

  • Digital Communications: PCM, DPCM, digital modulation schemes (ASK, PSK, FSK, QAM), bandwidth, inter-symbol interference, MAP, ML detection, matched filter receiver, SNR and BER. Fundamentals of error correction, Hamming codes, CRC.

Section 8: Electromagnetics 

  • Maxwell's Equations: Differential and integral forms and their interpretation, boundary conditions, wave equation, Poynting vector. 

  • Plane Waves and Properties: Reflection and refraction, polarization, phase and group velocity, propagation through various media, skin depth. 

  • Transmission Lines: Equations, characteristic impedance, impedance matching, impedance transformation, S-parameters, Smith chart. Rectangular and circular waveguides, light propagation in optical fibers, dipole and monopole antennas, and linear antenna arrays.

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GATE EC Syllabus 2025 for General Aptitude

General Aptitude is also a part of the GATE EC syllabus 2025. The GATE General Aptitude section carries 15% weightage in the paper. You must not forget to study this important section for the GATE EC exam. The GATE 2025 General Aptitude syllabus includes 4 sections. You can check the GATE General Aptitude syllabus 2025 below. 

Sections

Topics

Analytical Aptitude

Logic: deduction and induction, Analogy, Numerical relations and reasoning

Quantitative Aptitude

Data interpretation: data graphs (bar graphs, pie charts, and other graphs representing data), 2- and 3-dimensional plots, maps, and tables Numerical computation and estimation: ratios, percentages, powers, exponents and logarithms, permutations and combinations, and series Mensuration and geometry Elementary statistics and probability. 

Spatial Aptitude

Transformation of shapes: translation, rotation, scaling, mirroring, assembling, and grouping Paper folding, cutting, and patterns in 2 and 3 dimensions

Verbal Aptitude

Basic English grammar: tenses, articles, adjectives, prepositions, conjunctions, verb-noun agreement, and other parts of speech Basic vocabulary: words, idioms, and phrases in context Reading and comprehension Narrative sequencing

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GATE 2025 EC Syllabus PDF

IIT Roorkee has released the GATE Electronics and Communication Engineering syllabus PDF 2025. You can download the GATE EC syllabus 2025 by clicking on the link below. 

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GATE EC Syllabus 2025 Important Topics

As per the previous years' question pattern and analysis, you can check the important topics from the GATE EC syllabus 2025 below. 

Section

Important Topics

Analog Circuits

  • Small Signal Analysis of BJT and FET

  • Diode Circuits

  • Operational Amplifier and its Applications

General Aptitude

  • Verbal Ability

  • Analytical Aptitude

  • Quantitative Aptitude

  • Spatial Aptitude

Electronic Devices & Circuits

  • PN Junction

  • Semiconductor Theory

  • MOSFET and CMOS

Engineering Mathematics

  • Linear Algebra

  • Probability and Statistics

  • Calculus and Differential equations

Control System

  • Signal flow graphs

  • Routh-Hurwitz criteria

  • Time Domain Analysis

  • Frequency Domain Analysis using Nyquist and Bode plots.

Signals and Systems

  • LTI Systems

  • Laplace transform

  • Fourier Transform

  • Z-transform

Digital Electronics

  • Logic Gates

  • ADC and DACs.

  • Boolean Algebra and K-Map

  • Sequential Circuits and Counters

Electromagnetics

  • Electrostatics, EM waves & Transmission

  • Waveguides and Antennas

  • Transmission Lines

Communications

  • AM, FM Modulation and Demodulation

  • Digital Communication

  • Random Processes

Networks

  • Network analysis

  • Laplace transforms.

  • Two-Port Networks

  • Network Theorems

  • Transient and Steady State Analysis of RLC Circuit

GATE EC Syllabus 2025 Topic-Wise Weightage (Expected)

Each section of the GATE Electronics and Communication Engineering syllabus 2025 carries a good amount of weightage in terms of marks. Several questions are asked from the GATE EC syllabus sections, of which some carry higher marks. You can check the expected GATE EC 2025 syllabus topic-wise weightage of marks below. 

Section Name

1 Mark Questions

2 Marks Questions

Total Marks

GATE 2025 EC Expected Weightage of Marks

Control Systems

1

2

5

5%

Engineering Mathematics

5

4

13

13%

Digital Circuits

3

3

8

9%

Signal Systems

4

3

10

10%

Analog Circuits

3

2

7

7%

Electronic Devices

2

2

6

6%

Communication

3

5

13

13%

General Aptitude

5

5

15

15%

Networks Theory

2

5

12

12%

How to Prepare for GATE EC 2025 Syllabus

The GATE 2025 syllabus for EC includes various sections, topics, and chapters. Covering such a huge syllabus can be challenging but not impossible if you are dedicated. To pass the GATE exam and get admission to your desired college follow the preparation tips given below. 

  • Analyze the GATE exam pattern 2025 and the syllabus of EC. It will help you give an idea about the marking scheme, section-wise weightage, topics to be studied, etc.

  • Make a study plan according to your level. Add all the chapters of the GATE 2025 EC syllabus to your timetable. Add days for revision, solving previous year papers, mock tests, etc.

  • Study as per your study plan. Make notes of important topics and points it will come in handy in revision.

  • Learn the formulas and equations. Understand the concepts and memorize the theoretical part.

  • If you have any doubts, clear them with your teacher, mentor, coaching centre, etc. 

  • Solve GATE previous year papers, mock tests, and sample papers regularly. This will help you improve your mistakes, analyze your preparation, and improve your time accuracy.

  • Do continuous revision of the syllabus timely. 

Best Books for GATE EC 2025 Syllabus

You can check out the best books for the GATE EC syllabus 2025 below. These books are recommended by GATE toppers and written by top authors.

Section  

Name of the Book

Name of the Author 

Digital Circuits 

Digital Electronic Principles and Applications 

Ronald J. Toccii 

Modern Digital Electronics 

R.P. Jain 

Digital Logic and Computer Design 

M Morris Mano 

 Electronic Devices 

Solid State Electronic Devices 

Ben G. Streetman and Sanjay Banerjee 

Semiconductor Physics and Devices 

Donald A Neaman & Dhrubes Biswas 

Semiconductor Devices 

S. M. Sze 

Networks, Signals and Systems 

Engineering Circuit Analysis   

William H. Hayt 

Fundamentals of Electric Circuits 

Charles K. Alexander & Matthew N.O. Sadiku 

Network Analysis 

Mac Van Valkenburg 

Analog Circuits 

Integrated Electronics 

Jacob Millman Christos C Halkias 

Micro Electronics circuit  

Sedra & Smith 

Electronic Devices and Circuit 

Robert L. Boylestad Louis Nashelsky 

Control Systems 

Modern Control Engineering 

Katsuhiko Dgata 

Automatic Control Systems   

B.C. kuo, Farid Golnaraghi 

Control Systems Engineering   

I.J. Nagrath, M. Gopal 

Principles of linear system and signals 

BP Lath 

Communications 

Analog and Digital Communication Systems 

Simon Haykin 

Modern digital and analog Communications system 

BP Lathi 

Principle of Communication System 

Taub& Schillings 

Electromagnetics 

Principles of Electromagnetics  

Matthew N.D. Sadiku & 

S.V. Kulkarni 

Elements of Electromagnetics   

Matthew N.O. Sadiku 

Engineering Electromagnetics 

William Hayt 

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FAQs about GATE Syllabus

How to download the GATE 2025 ECE syllabus?

You can visit the official GATE 2025 exam website, gate2025.iitr.ac.in to download the GATE 2025 ECE syllabus.

How many chapters are there in the GATE Electronics and Communication Engineering syllabus?

There are a total of 8 sections in the GATE ECE 2025 syllabus including Engineering Mathematics.
 

Will GATE ECE 2025 be tough?

Generally, the difficulty level of the GATE ECE paper is considered to be moderate to tough; the same can be expected from the GATE 2025 ECE exam.

What are the most important topics in the GATE 2025 ECE syllabus?

Topics such as Signal Systems, Communication, Network Theory, and Digital Circuits are some of the most important topics in the GATE 2025 ECE  syllabus.

How to prepare for the GATE 2025 ECE syllabus?

You can prepare for the GATE 2025 ECE exam by covering the complete GATE ECE syllabus. You can identify the most important topics from the syllabus and make a study plan accordingly. 

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