Micro Electronic and Opto Electronic Devices - \"Pallab Bhattacherya- Semiconductor Optoelectronics\" Electro-magnetic Wave and Radiating System - \"Electromagnetic Waves & Radiating Systems, 2ed Edition � E. C. Jordan and K.G. Balmain,Pearson Education\" Analog Communication - \"Analog Communication Systems � Sanjay Sharma (Katson)\" Digital Electronic Circuits - \"Digital design by M. Mano (Pearson)\" Analog Electronic Circuits - \"Microelectronic Circuits � Sedra and Smith\" Apart from these books Study Materials that will be available here will be best for your Semester Preparation.