The book "Electronic and quantum devices of ultra-high frequencies" by Yu. A. Katsmana is a fascinating and deep dive into the world of modern technologies that shape the future of communications and scientific research. If you are interested in physics, electronics or just want to understand how the devices we use every day work, this book will be a real discovery for you. In his work, Katzman explores various aspects of the creation and operation of electronic and quantum devices operating at ultra-high frequencies. It not only describes the technical details, but also immerses the reader in the context, explaining how these technologies affect our lives and what prospects they open up. The book covers a wide range of topics, from basic theory to practical applications, making it useful for both students and professionals in the field of radio engineering and electronics. One of the key themes of the book is the interaction of light and matter at the quantum level. Katzman examines in detail how quantum effects can be used to create new types of devices that can operate with high efficiency and accuracy. This opens the door to the development of new technologies in the field of communication, medicine and even computing. Readers interested in the latest advances in quantum technology will find many interesting ideas and concepts in this book. Who can like this work? First of all, the book will be of interest to students and graduate students studying physics, radio engineering and electronics . It will also be a useful resource for researchers and engineers who are keen to keep abreast of the latest trends in their field. In addition, lovers of science and technology who want to expand their knowledge of quantum devices and their application, will find in this book a lot of fascinating and informative. Katzman's style is clear and accessible, which allows even complex concepts to be explained in simple and understandable language. He masterfully combines theory with practical examples, which makes reading not only informative, but also fascinating. In his work, there is a deep love for the subject and a desire to share his knowledge with readers. This quality makes his books especially valuable to a wide audience. The book "Electronic and quantum devices of ultra-high frequencies" not only expands the horizons of understanding of modern technologies, but also raises important questions about the future of science and technology. It makes you think about how fast technology is evolving and how it can change our world. If you want to be at the forefront of scientific discovery and understand how devices that are becoming increasingly important in our lives work, this book will become your trusted companion. In conclusion, “Electronic and quantum devices of ultra-high frequencies” is not just a textbook, but a real encyclopedia of knowledge that will be useful for both beginners and experienced specialists. Do not miss the opportunity to get acquainted with the work of Y. A. Katsmana is a journey into the world of science and technology that will not leave you indifferent.