There are certain sections and topics in the GATE ECE exam syllabus that carry more weightage in the exam. These topics are important for candidates to focus on during their preparation. Let's discuss these topics in detail:


- Network theorems (Thevenin's, Norton's, Superposition, Maximum Power Transfer)
- Resonance and filter circuits
- Two-port networks and network functions
- Transient and steady-state analysis of RLC circuits


- Fourier series and Fourier transform
- Laplace transform and Z-transform
- LTI systems and their frequency response
- Continuous-time and discrete-time signals and systems


- Semiconductor physics: energy bands, carrier transport, and recombination
- Diodes: rectifiers, clipping and clamping circuits, Zener diodes
- Bipolar Junction Transistors (BJTs) and Field Effect Transistors (FETs): biasing, small-signal analysis, and amplifiers
- Operational amplifiers: characteristics and applications


- Small-signal analysis and frequency response of amplifiers
- Feedback amplifiers and oscillators
- Power amplifiers and voltage regulators
- Op-amp circuits: filters, integrators, differentiators


- Combinational and sequential logic circuits
- Number representations and computer arithmetic
- Minimization techniques: Karnaugh maps and Quine-McCluskey method
- Memory and programmable logic devices


- Mathematical modeling of physical systems
- Transfer function and state-space representation
- Feedback control systems and stability analysis
- Frequency response analysis and design of controllers


- Analog communication systems: amplitude modulation, frequency modulation, and phase modulation
- Digital communication systems: pulse code modulation, PCM, delta modulation, and digital modulation techniques
- Information theory and source coding


- Electrostatics and magnetostatics
- Maxwell's equations and electromagnetic waves
- Transmission lines: characteristic impedance, impedance matching, and Smith chart
- Waveguides and antennas

It is important to note that the weightage of topics may vary from year to year, so candidates should also refer to previous year question papers and analyze the trend. However, focusing on these key topics will provide a strong foundation for the GATE ECE exam and increase the chances of scoring well.