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Traveling wave tubes, which are known as broadband, high power electromagnetic wave amplifiers, play a crucial role in fields like communication and broadcasting among others. The planar slow wave structure traveling wave tubes, which cooperate with sheet electron beams, have the ability to settle the power limitation caused by the size reduction in traditional cylindrical-beam traveling wave tubes. Therefore, there are increasingly more researchers contributing to the development of planar slow wave structure traveling wave tubes.
As a competitive candidate for 5G/6G communication, the planar slow wave structure traveling wave tubes are attracting increasingly more attention. Yet there is not yet a book which specifically introduces the key points in the development of such a device, this is that book. Readers will learn how the planar slow wave structure traveling wave tubes work; and how to design wideband, high efficiency, miniature millimetre wave and terahertz wave amplifiers. Additionally, systems engineers will learn how to operate planar slow wave structure traveling wave tubes, which will help them develop better, more effective systems.
This book would appeal to researchers and students with interests in high frequency, high power and high efficiency electromagnetic amplifiers and Microwave devices and components.
Prof. Yubin Gong obtained his PhD degree from University of Electronic Science and Technology of China (UESTC) in 1998. Since 2001, he has been a professor of UESTC. He was awarded the National Science Fund of China for Distinguished Young Scholars. His research interests include vacuum electron devices, terahertz biophysics, combination of medical and engineering applications, etc. He is the editor-in-chief of Journal of Vacuum Electronic Technologies and a member of the IEEE EDS Vacuum Electronics Technical Committee. He has published more than 500 papers and authorized more than 50 patents.
Prof. Shaomeng Wang has been a professor at University of Electronic Science and Technology of China (UESTC) since 2020. He was previously a research fellow at Nanyang Technological University in Singapore. He has published 108 papers. His expertise is in mm terahertz wave devices and applications.
Chapter 1. Background introduction.Introduce the new requirements for high power millimeter wave and terahertz wave devices. Introduce the concepts and advantages of planar slow wave structures traveling wave tubes over the traditional ones. Introduce the current status of the planar slow wave structures, etc.Chapter 2. Design and Simulation Present the basic methodology and topology for designing planar slow wave structures and standing wave structures from transmission lines. Present the approaches of improving the planar slow wave structures and standing wave structures, i.e., band extension, beam-wave interaction enhancement, oscillation expression, efficiency improvement, etc.. Present the modelling and simulation of the planar slow wave structures and standing wave structures using electromagnetic wave simulation software. Present the possible applications planar slow wave structures and standing wave structures on other electromagnetic devices or systems and so on. Chapter 3. Planar Electro-Optics SystemPresent the novel topologies of planar electron gun using different types of cathodes, different shapes of focusing electrodes and anodes. Present the advanced beam focusing systems, the design theory and the simulation process. Present the design method for designing planar multi-depression collector. Present the possible applications of electro-optical system on manipulating charged particles, etc. Chapter 4. Fabrications using advanced techniques Present the fabrication of different types of planar slow wave structure using techniques such as femtosecond laser cutting, MEMS, 3D printing, etc. Analysis results include surface roughness, dimensional error, effect on loss, and cost analysis etc. SummariesChapter 5. Fixtures and Assembly Present the topologies of fixtures for different kinds of planar slow wave structures/electro guns/focusing systems/collectors, etc. Present the assembly of the prototypes operating at frequency range of millimeter wave and terahertz wave bands. Discussion about the integrated processing of the planar devices Chapter 6. System and Test Present the power integration methodologies for planar slow wave structure traveling wave tubes. Present the systems and specific requirements for millimetre and terahertz wave communication and sensing based on planar traveling wave tubes, etc. Chapter 7. Discussion and Future Present the conclusions and future improvement methodologies on the planar vacuum electronic devices.
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