Study of a rectangular coupled cavity extended interaction oscillator in sub-terahertz waves

• 来源期刊: 中国物理B（英文版）
• 关键词: extended interaction oscillator(EIO) rectangular coupled-cavity sub-terahertz(SubTHz)waves dispersion relation
• 年，卷（期）: 2008,（9）
• 页码范围: 3402-3406
• 页数: 5页
• 语种: 英文

摘要

An extended interaction oscillator(EIO)generating 120 GHz wave in sub-terahertz waves is studied by using the three-dimensional electromagnetic simulation software CST and PIC codes.A rectangular reentrant coupled-cavity is proposed aB the slow-wave structure of EIO.By CST,the circuit parameters including frequency-phase dispersion,interaction impedance and characteristic impedance are simulated and calculated.The operation mode of EIO is chosen very close to the point where βL=2π with corresponding frequency 120 GHz,the beam voltage 12 kV and the dimensions of the cavity with the period 0.5 mm,the height 3 mm and the width 1.4 mm.Simulation results of beam-wave interaction by PIC show that the exciting frequency is 120.85 GHz and output peak power 465 W with 12-period coupled-cavity with the perveance 0.17μP.Simulation results indicate that the EIO has very wide range of the operation voltage.