Bøger af Sudipta Das

This book is aimed to bring the emerging application aspects of THz technology and various modules used for its successful realization. It gathers scientific technological novelties and advancements already developed or under development in the academic and research communities. This book focuses on recent advances, different research issues in terahertz technology and would also seek out theoretical, methodological, well-established and validated empirical work dealing with these different topics. In particular, this textbook covers design considerations and current trends of THz antennas and antenna arrays to deal with the transmission and reception of THz EM waves. It also presents a discussion on metamaterial structures, meta-surfaces, and absorbers to be used for some kind of sensing and detection applications. Furthermore, it reports on THz wireless communication aspects, 6G network issues and challenges, advantages and disadvantages, generation and detection of THz waves, Signal and Communication Processing for THz communication, reconfigurable low-noise amplifier (LNA) design, III-Nitride HEMTs for THz Applications, photonic crystal fiber for sensing applications, THz Design Variable Estimation by Deep Optimization, and THz Imaging issues. Once the readers finish studying this book then they will learn about the importance of THz technology, advancement in the field, applications, THz modules like antennas, MIMO and DRAs, communication aspects, LNAs, generation of THz waves, etc and future scope. It also leads to enhancement in their knowledge in THz technology, gives a platform to future technology and novel applications realization.

This book presents scientific and technological innovations and advancements already developed or under development in academia, industry, and research communities. It includes fundamental ideas and advancement in terahertz technology covering high intensity terahertz wave generation, THz detection, different modes of THz wave generation, THz modulation system, and terahertz propagation channel modeling. It highlights methodologies for the design of terahertz components and system technologies including emerging applications. The chapter contents are based on theoretical, methodological, well-established, and validated empirical work dealing with different topics in the terahertz domain. The book covers a very broad audience ranging from basic sciences to experts and learners in engineering and technology. It would be a good reference for advanced ideas and concepts in THz technology which will best suit microwave, biomedical, and electrical and communication engineers working towards next-generation technology.

Science Fiction Romance 'The Asylum Dweller's Diary' by Author Sudipta Das is the first episode of the Alien 'Planet Hoola' book series. Inspired by heavenly realisations; a few of the super-natural phenomena incorporated in this work were actually experienced in life. This book was first published from the USA and the UK. The Asylum Dweller, Kit, appeared apparently out of nowhere and, after spending two decades at the asylum, disappeared mysteriously. All along, he maintained that he was from another planet called Hoola, millions of light-years away from the Earth. He left behind his diary to his doctor, the narrator. His vivid diary describes how he grew up on Hoola, with certain identity. He found that their alien Hoo race was divided by their diverse identities. He met this pretty girl, Ket, from his neighbouring country; the two became friends. Later, war broke out between the two countries and she was deported. Eventually, Kit rose in his career. Meanwhile, the war escalated and he had to go to the battlefield to fight against Ket's country. He fought well, but was captured. In captivity, he reunited with Ket and had the vision of his Deity. The two decided to marry and eloped. After a dramatic climax, his Deity sent him to Earth. Thus ends the diary, leaving the narrator confused about Kit's true identity. Was he indeed an alien or just insane?

The present study represents the first published translation and analysis of an intriguing scheme of invasion of the British Isles that formed the foundation of all later invasion plans drawn up in the ivory towers of French diplomacy.