I would suggest you to go through the below article to know the complete preparation tips and books which you should use -

https://engineering.careers360.com/articles/gate-how-to-prepare-for-electronics-and-communication-engineering

Good Luck!!!

Hi

You can refer to the following books while preparing for GATE ECE:

General Aptitude - Quantitative Aptitude by CAT by Arun Sharma, Quantitative Aptitude by R.S Agarwal

Control System - Control Systems Engineering by Norma Nise,

Control Systems by Nagarath and Gopal, NPTEL Video lectures by M. Gopal

Network - Network Theory by Alexander Sadiku, Circuit Theory by A.Chakraborty, Network Analysis by Van Valkenburg

Electronic Devices - Electronic Devices and Circuits by Millman & Halkias, Semiconductor Physics And Devices by Donald A. Neamen,
Solid state electronic devices by Ben G. Streetman and Sanjay Banerjee

Signal Systems - Digital Signal Processing by S.K Mitra, Modern digital and analog Communications system by BP Lathi, Signals & Systems By Alan V. Oppenheim

Analog Circuits - Analog Electronics, Electronics devices and circuits – Donald A Neaman, Microelectronics Circuits by Sedra & Smith, Electronic Devices and Circuit Theory by Robert L Boylestad & Nashelsky, Pulse and Digital Electronics by Millman and Taub

Digital System - Digital Logic and Computer Design by M.Morris Mano, Digital circuits and design by Salivahanan or Fundamentals of digital systems by Anandkumar, Digital Electronic Principles and applications by Ronald J. Toccii, Pearson Publications

Electromagnetics - Elements of Electromagnetics by Matthew N.O. Sadiku, Network lines and fields by J.D ryder (Transmission lines part), Electromagnetic waves and Radiating Systems by Jordon and ballmain
Antenna Theory by Balanis, NPTEL Lectures by Prof. R. Shevgaonkar

Communication System - Analog and Digital Communication System by Simon Haykin, Principle of Communication System by Taub& Schillings, Modern digital and analog Communications system by BP Lathi, Electronic Communication Systems by Kennedy and Davis (just the Noise chapter)

MCQ book - Gate ECE by R.K Kanodia

Maths - Advanced Engineering Mathematics by R. K. Jain, S. R. K. Iyengar – Narosa Publications, Higher Engineering mathematics by Dr. B.S Grewal

I hope these books are of help to you!

All the best!!