Study on Silicon-Based Conformal Microstrip Angular Log-Periodic Meander Line Traveling Wave Tube

He, Tenglong; Wang, Zhanliang; Wang, Hexin; Shao, Wei; Tian, Hanwen; Yue, Lingna; Gong, Huarong; Duan, Zhaoyun; Wei, Yanyu; Gong, Yubin

doi:10.2528/pierm18090703

Cited by 10 publications

(1 citation statement)

References 14 publications

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“…Terahertz (THz) radiation sources driven by electron beams are widely used in high resolution radar imaging, wireless communication systems, spectral detection and biomedicine [1][2][3][4]. The THz radiation sources driven by electron beams include backward wave oscillators (BWOs) [5,6], travelling wave tubes (TWTs) [7,8], klystrons [9], gyrotrons [10], and extended interaction oscillators [11]. BWOs with sheet beam (SB BWOs) are slow wave devices (SWDs) and have the advantages of room-temperature operation, wide tuning bandwidths, small sizes, and low prices.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study of a High-Order Mode Bwo With Multiple Inclined Rectangular Electron Beams

Wang¹,

Zhang²,

Gao³

2021

PIER C

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A backward wave oscillator (BWO) operating at the high-order mode (HOM) with multiple inclined rectangular electron beams (IRBs) is presented in this article. The BWO operating at the HOM with multiple IRBs (HOM IRB BWO) is driven by multiple IRBs. Compared with typical BWOs, the slow wave structure of the HOM IRB BWO is an overmoded metal-grating rectangular waveguide (OGRWG). The mode competition of the slow-wave device operating at the HOM is analyzed according to the ohmic losses of different modes of the OGRWG slow wave structure and multiple beams exciting. The analysis is verified by simulation. Two kinds of HOM-fundamental mode converters (MCs) are designed for converting the HOM generated by the HOM IRB BWO into the fundamental mode. The beam-wave interaction of the HOM IRB BWOs with the HOM-fundamental MC is studied. The results show that the mode competition does not occur; frequency spectrums of output signals are pure; and the HOM is converted into the fundamental mode effectively.

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Section: Introductionmentioning

confidence: 99%

Simulation Study of a High-Order Mode Bwo With Multiple Inclined Rectangular Electron Beams

Wang¹,

Zhang²,

Gao³

2021

PIER C

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Wide band high gain modified-folded-wave-guide slow wave structure for millimeter-wave traveling wave tube amplifier in 6G and beyond back-haul communications

Stanislaus

2024

Phys. Scr.

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Millimeter-wave technology is crucial in telecommunications as it enables higher bandwidths and faster data transfer. V-band represents frequencies ranging from 50 to 75 GHz and is used for short-range back-haul communication, defense radar, inter-satellite communications, and space debris detection. Folded wave guide slow-wave structures (FWG-SWS) are an excellent choice for V-band amplifiers due to their wide bandwidths, large gain, and ease of fabrication using modern lithographic processes. This article presents a modified folded wave-guide slow-wave structure (MFW-SWS) for V-band traveling wave tube amplifiers (TWTAs) desirable for multi-gigabit 6G and beyond back-haul communications. The MFW slow-wave structure is an FWG-SWS variant that supports an increased RF phase velocity, accommodating additional SWS length for much-improved amplification. The dispersion analysis effectively provides a 15\% operational bandwidth ranging from 64-74 GHz with a reduced phase velocity of three-tenths the speed of light apt for enhanced beam-wave interactions. The two-section SWS has independent attenuators designed to provide over 20 dB attenuation throughout the functional bandwidth effortlessly. Additional wave-guide transitions are introduced to achieve the best attenuation characteristics. Along the axis of the SWS, a square beam tunnel is employed to support a 26 kV round electron beam with a beam current of 70 mA. To contain the electron beam within the beam tunnel, this study used a focusing mechanism with a constant magnetic field of 0.25T, which is highly appropriate for miniaturization and large-scale implementation in 6G back-haul towers. Particle-in-cell (PIC) simulations were performed using the CST (Computer Simulation Technology) Studio Suite, and a gain of over 26 dB with an output power of 50 W was successfully attained across the operational bandwidth.

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Microfabrication of A Conformal Microstrip Angular Log-periodic Meander Line TWT

Wang

et al. 2019

2019 International Vacuum Electronics Conference (IVEC)

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Study on Silicon-Based Conformal Microstrip Angular Log-Periodic Meander Line Traveling Wave Tube

Cited by 10 publications

References 14 publications

Simulation Study of a High-Order Mode Bwo With Multiple Inclined Rectangular Electron Beams

Simulation Study of a High-Order Mode Bwo With Multiple Inclined Rectangular Electron Beams

Wide band high gain modified-folded-wave-guide slow wave structure for millimeter-wave traveling wave tube amplifier in 6G and beyond back-haul communications

Microfabrication of A Conformal Microstrip Angular Log-periodic Meander Line TWT

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