An RF Design of Biperiodic Multimode Interaction Circuit for $\textit{G}$ -Band Extended Interaction Klystron

Article Engineering, Electrical & Electronic

Overlapping-Mode Extended Interaction Klystrons for Broadband Terahertz Power Amplifiers

Naining Guo et al.

Summary: This paper presents the design approaches of overlapping-mode extended interaction klystrons (EIKs) to meet the requirements for broadband terahertz power amplifiers. By operating the cavities in multiple-cavity modes, the overlapping-mode EIKs can provide high output power over a wider frequency band. The circuit characteristics of the overlapping-mode EIKs are studied, and a six-cavity EIK operating at 0.34 THz is designed to demonstrate its broadband output capability.

IEEE TRANSACTIONS ON ELECTRON DEVICES (2022)

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Article Engineering, Electrical & Electronic

A High-Power and Broadband G-Band Extended Interaction Klystron Based on Mode Overlap

Feng Zhang et al.

Summary: This paper proposes a G-band multigap extended interaction klystron (EIK) with a ladder-type structure and mode overlap method, aiming to achieve high power, high efficiency, and broad bandwidth. By optimizing the number of gaps, length ratio of slots, circuit structure, and working conditions, the EIK bandwidth in the terahertz band is successfully expanded.

IEEE TRANSACTIONS ON ELECTRON DEVICES (2022)

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Article Physics, Fluids & Plasmas

A Wideband Double-Sheet-Beam Extended Interaction Klystron With Ridge-Loaded Structure

Han Wang et al.

Summary: This article proposes a novel transverse-mode overlapping technology for the development of wideband extended interaction klystrons. By using double sheet beams and innovative extended structures, a wideband six-cavity circuit is designed, and particle-in-cell (PIC) simulation results show excellent bandwidth characteristics.

IEEE TRANSACTIONS ON PLASMA SCIENCE (2022)

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Article Engineering, Electrical & Electronic

Analysis and Improvement of Performance Instability in Extended Interaction Klystrons With Random Geometrical Perturbations

Naining Guo et al.

Summary: This article describes and evaluates the effect of random geometrical perturbations on resonance characteristics and output performance of extended interaction klystrons, and proposes improvement measures.

IEEE TRANSACTIONS ON ELECTRON DEVICES (2022)

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Article Engineering, Electrical & Electronic

Study of a 0.34-THz Ladder-Type Extended Interaction Klystron With Narrow Coupling Cavities

Naining Guo et al.

Summary: A narrow coupling ladder-type extended interaction klystron operating at 0.34 THz is proposed in this article, which offers higher power capability and efficiency compared to traditional THz EIKs. The operating stability and high output power are achieved by adjusting the design structure.

IEEE TRANSACTIONS ON ELECTRON DEVICES (2021)

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Article Engineering, Electrical & Electronic