Electronic Devices, Signals and Systems, Network Theory, Electromagnetic Waves, Electromagnetic Measurements, Control Systems and Microwave Engineering are some of the main topic headings included in the syllabus of IES (Indian Engineering Services) in Electronics and Communication Engineering. Students can refer books like Electronic Principles by Malvino, Signals and Systems by Douglas K. Lindner, Network Analysis by M.E. Van Valkenburg, and Control Systems Engineering by I.J.Nagrath, M. Gopal for exam preparation.

Books on Electronic Devices

• Electronic Circuits by Donald L. Shilling & Charles Belowl
• Electronic Devices and Circuit Theory by R.L. Boylestad and L. Nashelsky
• Electronic Devices and Circuits by David A. Bell
• Electronic Devices and Circuits by Jacob Millman and Christos C. Halkias
• Electronic Principles by Malvino
• Integrated Electronics by Millman & Halkias
• Principles of Electronics by V.K. Mehta, Shalu Melta

Books on Signals and Systems

• Circuit and System by a Papoulis
• Signals and Systems by Douglas K. Lindner
• Principles of Signals and System by Fred J Taylor
• Signal & Systems by Simon Haykins
• Signals and Systems by AllanV.Oppenheim, Allan S.Willsky and S.Hamid Nawab
• Signals and Systems by Simon Haykins and Barry Van Veen

Books on Network Theory

• Network Analysis by M.E. Van Valkenburg,
• Network lines and fields by John D. Ryder
• Transmission lines and Networks by Umesh Sinha
• Circuits and Networks by Shyammohan and Sudhakar
• Network Analysis and Synthesis by Frankline F.Kuo
• Computer Networks by Tanenbaum A.S
• Data Communications and Networking by Forouzan B.A
• Data and Computer Communications by Stallings W
• Design and Analysis of Computer Communication by Ahuja V
• Local Area Networks by Bee K.C.S
• Computer Networks and their Protocols by Davies D. W. Barber

Books on Electromagnetic Waves

• Field and Wave Electromagnetics by David K. Cheng
• Electromagnetic waves and radiating systems by Edward C.Jordan and Keith G.Balaman
• Electromagnetic Waves and Radiating Systems by Jordan E C & Balmain K G
• Field and Waves Electromagnetics by David K. Chang
• Engineering Electromagnetics by Hayt W H JR

Books on Electromagnetic Measurements and Instrumentation

• A Course in Electrical and Electronic Measurements and Instrumentation by A.K. Sawhney
• Instrumentation Measurement and Analysis by B.C. Nakra, K.K. Chaudhry
• Mechanical Measurements by Thomas G. Beckwith

Books on Control Systems

• Automatic Control Systems by B.C.Kuo
• Automatic Control Systems by Benjamin C.Kuo
• Control Systems Engineering by I.J.Nagrath, M. Gopal
• Control Systems Engineering by R.Anandanatarajan, P. Ramesh Babu
• Control Systems: Principles & Designing by Madan Gopal
• Digital Control by Kannan M. Moudgalya
• Discrete Time Control Systems by Katsuhiko Ogata
• Modern Control Engineering by K.Ogata

Books on Communication Systems

• Communication Systems by Roddy and Coolen
• Communication Systems by Sirnon Haykin
• Electronic Communication Systems by George Kennedy and Bernard Davis
• Electronic Communication Systems- Fundamentals Theory Advanced by Wayne Tomasi
• Electronics Communication System by Dungan F.R
• Electronics Communication System by Kennedy
• Principles of Communication Systems by Taub & Schilling
• Radio Engineering by Mithal G K

Books on Microwave Engineering

• Microwave Devices and Circuits by Samuel Y. Liao
• Microwave Engineering by David M. Pozar
• Microwave Engineering by Das, Annapurna & Sisir K. Das
• Microwave Engineering by Annapoorna Das and Sisir K. Das
• Microwave Engineering by Anoop Singh
• Foundation of Microwave Engineering by R. F. Collins

Other than books prescribed in B.Tech syllabus, one can refer e-books or other competition guides for exam preparation.