GATE ECE at a Glance
Paper Code
EC
Paper Name
Electronics & Communication
Exam Authority
IISc / IITs (Rotational)
Exam Mode
Computer Based Test (CBT)
Duration
3 Hours (180 Minutes)
Important Dates
Check Latest Official Notification
Who Can Appear for GATE EC?
Standard official eligibility requirements for candidates.
Educational Qualification
Candidates currently in the 3rd or higher years of any undergraduate degree program OR who have already completed any government approved degree program in Engineering / Technology / Architecture / Science / Commerce / Arts are eligible.
Age Limit
There is absolutely no age limit criteria defined for candidates appearing for the GATE examination.
Number of Attempts
There is no restriction on the number of times a candidate can appear for the GATE examination.
GATE EC Exam Pattern
Structure and marking scheme of the Electronics & Communication paper.
| Section | Total Questions | Total Marks | Weightage |
|---|---|---|---|
| General Aptitude (GA) | 10 Questions | 15 Marks | 15% |
| Engineering Mathematics | Combined with Core | ~13 Marks | ~13% |
| Core Electronics & Comms | 55 Questions (incl. Math) | 85 Marks (incl. Math) | ~72% |
| Total | 65 Questions | 100 Marks | 100% |
GATE EC Syllabus
Official subject-wise topic breakdown for Electronics & Communication.
01 Engineering Mathematics
Linear Algebra, Calculus, Differential Equations, Vector Analysis, Complex Analysis, Probability and Statistics.
02 Networks, Signals and Systems
Circuit analysis: Node and mesh analysis, superposition, Thevenin's theorem. Two-port networks. Continuous-time signals: Fourier series and transform. Discrete-time signals: DTFT, DFT, z-transform.
03 Electronic Devices
Energy bands in intrinsic and extrinsic silicon; Carrier transport. P-N junction, Zener diode, BJT, MOS capacitor, MOSFET, LED, photo diode and solar cell.
04 Analog Circuits
Diode circuits: clipping, clamping and rectifiers. BJT and MOSFET amplifiers. Operational amplifiers: Characteristics and applications. Oscillators and timers.
05 Digital Circuits
Number representations. Boolean algebra, K-map. Combinational circuits: multiplexers, decoders. Sequential circuits: latches and flip-flops, counters, shift-registers. ADCs and DACs. Microprocessor (8085).
06 Control Systems
Basic control system components. Feedback principle. Transfer function. Block diagram representation. Transient and steady-state analysis. Routh-Hurwitz and Nyquist stability criteria. Bode and root-locus plots. State variable model.
07 Communications
Random processes. Analog communications: AM, FM. Information theory. Digital communications: PCM, DPCM, ASK, FSK, PSK, QAM. Fundamentals of error correction, Hamming codes.
08 Electromagnetics
Maxwell's equations. Plane waves and properties. Transmission lines: equations, characteristic impedance, matching, Smith chart. Waveguides: boundary conditions, modes. Antennas: dipole, array.
Master Every GATE EC Subject
Focus on chapter-wise preparation and concept building.
Networks & Signals
Build the foundation of electrical engineering with rigorous practice of KVL/KCL, transients, and LTI systems.
Practice Topics →Electronic Devices & Analog
Master PN junction physics, BJT/MOSFET operation, and Op-Amp circuits.
Practice Topics →Communications
Practice heavy numericals on random variables, AM/FM power calculations, and digital modulation schemes.
Practice Topics →How to Prepare for GATE ECE
A structured approach specifically tailored for Electronics & Communication.
1 Core Foundation
Network Theory and Signals & Systems form the absolute core of ECE. Do not touch Analog Circuits or Communications without mastering these two subjects first.
2 The Math Advantage
Engineering Mathematics and General Aptitude yield 28-30 marks. They are highly scoring. Practice them consistently alongside your technical subjects.
3 Tackle Tough Subjects
Electromagnetics and Communications are often considered difficult. Break them down. Master Transmission Lines and Random Variables first, as they are frequently tested.