Session 17 Electron tubes &amp;#8212; Traveling wave tubes

Gilmour, A. S.

doi:10.1109/iedm.1977.189251

Cited by 26 publications

(41 citation statements)

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“…When seeking for best conditions for the synchronization, researchers proposed a number of periodic structures as SWS such as those comprising coupled cavities 6 or corrugated waveguides 7 . Recently, metamaterial based SWSs have been proposed [8][9][10] by loading a waveguide with subwavelength resonant elements, like ring-bars 11 or split-ring resonators 8 , with the aim of enhancing the interaction impedance and gain accordingly 2,12 . Such periodic SWSs usually operate at frequencies far from the edge of their band gap.…”

Section: Introductionmentioning

confidence: 99%

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Giant amplification in degenerate band edge slow-wave structures interacting with an electron beam

et al. 2016

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We propose a new amplification regime based on synchronous operation of four degenerate electromagnetic (EM) modes in a slow-wave structure and the electron beam, referred to as super synchronization. These four EM modes arise in a Fabry-Pérot cavity (FPC) when degenerate band edge (DBE) condition is satisfied. The modes interact constructively with the electron beam resulting in superior amplification. In particular, much larger gains are achieved for smaller beam currents compared to conventional structures based on synchronization with only a single EM mode. We demonstrate giant gain scaling with respect to the length of the slow-wave structure compared to conventional Pierce type single mode traveling wave tube amplifiers. We construct a coupled transmission line (CTL) model for a loaded waveguide slow-wave structure exhibiting a DBE, and investigate the phenomenon of giant gain via super synchronization using the Pierce model generalized to multimode interaction.

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Section: Introductionmentioning

confidence: 99%

“…The synchronization is critical to the energy transfer from the beam to the radio frequency wave serving as basis for high power generation, 1,2 . Helical slow-wave structures are among the earliest realizations of SWS due to their cost efficiency and wide bandwidth [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Giant amplification in degenerate band edge slow-wave structures interacting with an electron beam

et al. 2016

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“…This article is not a vacuum tube technology primer. The reader interested in learning more about vacuum electronics should consult the references, as well as the articles in this Special Issue, along with the many excellent textbooks on RF vacuum device technology [4], [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Frontiers in the Application of RF Vacuum Electronics

Armstrong

Snively

Shumail

et al. 2023

IEEE Trans. Electron Devices

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The application of radio frequency (RF) vacuum electronics for the betterment of the human condition began soon after the invention of the first vacuum tubes in the 1920s and has not stopped since. Today, microwave vacuum devices are powering important applications in health treatment, material and biological science, wireless communication-terrestrial and space, Earth environment remote sensing, and the promise of safe, reliable, and inexhaustible energy. This article highlights some of the exciting application frontiers of vacuum electronics.

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“…Even though the history of magnetron was different from the way it is presented by the winners of the World War II [6], this invention was unquestionably extremely important since it allowed for the construction of radars [7]. In 1943, Rudolf Kompfner introduced the traveling-wave tube (which was a great improvement over Haeff’s similar device from 1931) [8,9,10]. It caused dynamic development of the microwave technique, which was mainly focused on radar technology.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Silica-Based Materials for Electronics-Oriented Applications

et al. 2019

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Electronics, and nanoelectronics in particular, represent one of the most promising branches of technology. The search for novel and more efficient materials seems to be natural here. Thus far, silicon-based devices have been monopolizing this domain. Indeed, it is justified since it allows for significant miniaturization of electronic elements by their densification in integrated circuits. Nevertheless, silicon has some restrictions. Since this material is applied in the bulk form, the miniaturization limit seems to be already reached. Moreover, smaller silicon-based elements (mainly processors) need much more energy and generate significantly more heat than their larger counterparts. In our opinion, the future belongs to nanostructured materials where a proper structure is obtained by means of bottom-up nanotechnology. A great example of a material utilizing nanostructuring is mesoporous silica, which, due to its outstanding properties, can find numerous applications in electronic devices. This focused review is devoted to the application of porous silica-based materials in electronics. We guide the reader through the development and most crucial findings of porous silica from its first synthesis in 1992 to the present. The article describes constant struggle of researchers to find better solutions to supercapacitors, lower the k value or redox-active hybrids while maintaining robust mechanical properties. Finally, the last section refers to ultra-modern applications of silica such as molecular artificial neural networks or super-dense magnetic memory storage.

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Session 17 Electron tubes — Traveling wave tubes

Cited by 26 publications

References 0 publications

Giant amplification in degenerate band edge slow-wave structures interacting with an electron beam

Giant amplification in degenerate band edge slow-wave structures interacting with an electron beam

Frontiers in the Application of RF Vacuum Electronics

Mesoporous Silica-Based Materials for Electronics-Oriented Applications

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