Design and Experiment of a High Average Power Ku-Band TE<sub>01</sub> Mode Gyro-TWT

Xu, Yong; Sun, Miao; Peng, Tinghui; Wang, Jianxun; Luo, Yong; Yan, Ran; Jiang, Wei; Liu, Guo; Li, Hongfu

doi:10.1109/ted.2019.2894537

Cited by 17 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7a and 8 it becomes evident that the operating TE 17,2 mode of the 0.39-THz second-harmonic gyrotron dominates over the remaining competing modes in a wide frequency range, provided that the loss tangent tan  is increased up to 0.07 for the dielectric insert with 9 r   and 1.3 i R  mm. In this case, the dielectric-loaded cavity for the 0.39-THz second-harmonic gyrotron meets the design goal, even though the increased dielectric losses still remain much lower than those usually employed to suppress parasitic modes in interaction structures and beam tunnels of gyro-devices [41,42,50,51].…”

Section:  mentioning

confidence: 98%

“…Such a rod can be fabricated from commercial AlN-SiC (or BeO-SiC) ceramics, which can possess loss tangent in the wide range from 0.001 to 0.5 depending on volume fraction of SiC [34,39,40]. Benefits of these ceramics are vacuum compatibility and exceptionally high thermal conductivity, which make such dielectrics suitable for use in high-power vacuum devices [41,42]. The radius of the lossy dielectric rod must be selected sufficiently small to have only a slight effect on the operating mode.…”

Section:  mentioning

confidence: 99%

See 1 more Smart Citation

Mode Discrimination by Lossy Dielectric Rods in Cavities of Second-Harmonic Gyrotrons

Shcherbinin

Avramidis

Thumm

et al. 2021

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

The influence of a coaxial dielectric rod on eigenvalues, ohmic losses, transverse field structure and beam-wave coupling coefficients is investigated for TE modes of a gyrotron cavity. It is shown that such dielectric insert, when made from a moderate-loss material, results in strong attenuation of all cavity modes, with the exception of those having caustic radii much larger than the insert radius. It is proposed to employ such dielectric loading for selective suppression of competing modes in cavities of second-harmonic gyrotrons. The high performance and flexibility of the proposed method of mode discrimination is demonstrated for the example of the cavity of the high-power 0.39-GHz second-harmonic gyrotron developed at the University of Fukui. In addition, some fascinating capabilities enabled by coaxial inserts made of ultralow-loss dielectrics are discussed.

show abstract

Section:  mentioning

confidence: 98%

Section:  mentioning

confidence: 99%

Mode Discrimination by Lossy Dielectric Rods in Cavities of Second-Harmonic Gyrotrons

Shcherbinin

Avramidis

Thumm

et al. 2021

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

show abstract

High‐Power Microwave Sources

Prasad

2024

Encyclopedia of RF and Microwave Engineering

View full text Add to dashboard Cite

High‐power microwave (HPM) sources are at the heart of an HPM‐directed energy weapons (DEWs) system. Based on recent defense news articles seen in online magazines such as The Warzone , it is becoming more and more apparent that in the future the survival of a nation may depend on its DEW capability. This chapter provides a brief synopsis of a wide range of microwave tubes which are used for the generation of HPM signals. The chapter starts with a brief introduction on DEWs and their applications followed by a discussion on the basic building blocks of an HPM system. The sections that follow contain generalized physics of operation, frequency range, and output power capability of the following HPM tubes: magnetrons, backward wave oscillators (BWOs), klystrons, traveling wave tubes (TWTs), gyrotrons, virtual cathode oscillators (VCOs), magnetically insulated line oscillators (MILOs), transit time oscillators (TTOs), split cavity oscillators (SCOs), and reltrons. Of all the microwave tubes, the magnetron has been discussed in a little more detail because of its rich history. References have been provided for readers who wish to gain further knowledge in each area.

show abstract

High‐power Microwave Sources

Prasad

2024

Encyclopedia of RF and Microwave Engineering

View full text Add to dashboard Cite

High‐power microwave (HPM) sources are at the heart of an HPM‐directed energy weapons (DEWs) system. Based on recent defense news articles seen in online magazines such asThe Warzone, it is becoming more and more apparent that in the future the survival of a nation may depend on its DEW capability.This chapter provides a brief synopsis of a wide range of microwave tubes which are used for the generation of HPM signals. The chapter starts with a brief introduction on DEWs and their applications followed by a discussion on the basic building blocks of an HPM system. The sections that follow contain generalized physics of operation, frequency range, and output power capability of the following HPM tubes: magnetrons, backward wave oscillators (BWOs), klystrons, traveling wave tubes (TWTs), gyrotrons, virtual cathode oscillators (VCOs), magnetically insulated line oscillators (MILOs), transit time oscillators (TTOs), split cavity oscillators (SCOs), and reltrons. Of all the microwave tubes, the magnetron has been discussed in a little more detail because of its rich history. References have been provided for readers who wish to gain further knowledge in each area.

show abstract

Design and Experiment of a High Average Power Ku-Band TE₀₁ Mode Gyro-TWT

Cited by 17 publications

References 20 publications

Mode Discrimination by Lossy Dielectric Rods in Cavities of Second-Harmonic Gyrotrons

Mode Discrimination by Lossy Dielectric Rods in Cavities of Second-Harmonic Gyrotrons

High‐Power Microwave Sources

High‐power Microwave Sources

Contact Info

Product

Resources

About

Design and Experiment of a High Average Power Ku-Band TE01 Mode Gyro-TWT

Cited by 17 publications

References 20 publications

Mode Discrimination by Lossy Dielectric Rods in Cavities of Second-Harmonic Gyrotrons

Mode Discrimination by Lossy Dielectric Rods in Cavities of Second-Harmonic Gyrotrons

High‐Power Microwave Sources

High‐power Microwave Sources

Contact Info

Product

Resources

About

Design and Experiment of a High Average Power Ku-Band TE₀₁ Mode Gyro-TWT