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Affiliation of Author(s):[1]Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China;[2]Lab Electromagnet Space Cognit & Intelligent Contr, Beijing 100089, Peoples R China

Journal:IEEE TRANSACTIONS ON ELECTRON DEVICES

Key Words:Curved-profile circuit; gyro-TWT; hottest experiments; large-signal theory; particle-in-cell (PIC) validation

Abstract:The large-signal theory for curved-profile circuit and magnetic field of gyro-TWT is presented. According to it, an optimization method is proposed to achieve effective wave-particle interaction over a wide frequency band through a curved-profile circuit with cutoff sections and gyrotron solenoid magnetic field. It avoids strict limit of grazing magnetic field along the circuit position to improve the design freedom. On this basis, a Ka-band gyro-TWT operating at TE01 mode is theoretically designed and well validated by particle-in-cell (PIC) codes and hot-test experiments. The developed amplifier achieves an output power of above 134 kW range from 27.7 to 31.7 GHz, with an interaction efficiency of above 22.3% over the entire band.

First Author:Yelei Yao et al.

Document Type:Article

Volume:70

Issue:8

Page Number:4414-4420

ISSN No.:0018-9383

Translation or Not:no

Release time:2025-05-23