Electronics and communication core¶
Used by the engineering-jobs family (GATE EC, GATE IN and the PSU/AE/JE papers that recruit on them). The overlap map has the full list.
What it covers¶
Checked against the official GATE 2027 syllabi for EC and IN (links below):
- Networks, signals and systems: node/mesh analysis, network theorems, two-port networks, transient and phasor response; LTI systems, convolution, Fourier/Laplace/z-transforms, DFT/FFT, sampling and FIR/IIR basics.
- Electronic devices and analog circuits: semiconductors, p-n junction, BJT, MOSFET, optoelectronic devices; diode circuits, amplifiers, op-amps, filters, oscillators.
- Digital circuits: Boolean algebra, combinational and sequential logic, ADCs/DACs, semiconductor memories, computer organisation basics (IN adds microcontrollers, data acquisition and IoT basics).
- Control systems: transfer functions, block diagrams, signal flow graphs, transient/steady-state response, Routh-Hurwitz/Nyquist stability, Bode and root-locus plots, PID and compensators, state-space.
- Communications: random processes and noise, analog modulation (AM/FM), digital modulation (ASK/PSK/FSK/QAM), information theory, error control (IN adds optical sources, fiber-optic sensing and 4-20 mA loops).
- Electromagnetics: Maxwell's equations, plane waves, transmission lines, Smith chart, waveguides, antennas (IN covers the electrostatics/magnetostatics subset under Electricity and Magnetism).
Where it counts¶
| Family | Exams |
|---|---|
| Engineering jobs: GATE, ESE, JE, PSU, state AE/JE | GATE Electronics and Communication (EC), GATE Instrumentation Engineering (IN) |
Depth by exam family¶
| Family | What the exam rewards |
|---|---|
| GATE EC | Full depth on all six groups above, numerical plus theory |
| GATE IN | Overlapping subset: signals, control, analog/digital, communications and electromagnetics basics; plus measurements, sensors and optical instrumentation beyond this module |
Official syllabi checked¶
- GATE EC 2027 syllabus, IIT Madras: https://gate2027.iitm.ac.in/static/doc/GATE2027_Syllabus/EC_GATE2027_Syllabus.pdf
- GATE IN 2027 syllabus, IIT Madras: https://gate2027.iitm.ac.in/static/doc/GATE2027_Syllabus/IN_GATE2027_Syllabus.pdf
Free resources¶
- NPTEL Electronics and Communication courses (IIT/IISc, free): https://nptel.ac.in/courses
- MIT 6.002 Circuits and Electronics (free lecture videos, notes, problem sets): https://ocw.mit.edu/courses/6-002-circuits-and-electronics-spring-2007/
- MIT OpenCourseWare (free lecture notes and problem sets): https://ocw.mit.edu
How to practise¶
Networks and signals first; they feed control and communications. Then analog plus digital together. Solve official GATE EC/IN previous papers topic-wise from week one.