Small-signal theory of subterahertz overmoded surface wave oscillator with distributed wall loss | Zendy

Guangqiang Wang | Zendy; Jianguo Wang | Zendy; Shuang Li | Zendy; Xuefeng Wang | Zendy

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Small-signal theory of subterahertz overmoded surface wave oscillator with distributed wall loss

Author(s) -

Guangqiang Wang,

Jianguo Wang,

Shuang Li,

Xuefeng Wang

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4931455

Subject(s) - oscillation (cell signaling) , signal (programming language) , terahertz radiation , surface roughness , surface (topology) , physics , surface wave , materials science , mechanics , computational physics , optics , chemistry , geometry , thermodynamics , computer science , mathematics , programming language , biochemistry

A small-signal theory of the overmoded surface wave oscillator (SWO) with distributed wall loss is presented in this letter. The wall loss considered here includes the surface resistance and surface roughness. The cold and hot characteristics of 0.14 THz SWO are studied by the small-signal theory. Numerical results show that as the increase of wall loss, the working frequency decreases slightly, the rise time and startup time of oscillation increase significantly, and the output power decreases dramatically. Particle-in-cell (PIC) simulation confirms the prediction by the small-signal theory

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