Analysis of microwave characteristics of a variable spacing planar high-temperature superconducting waveguide in DC magnetic field

Chien-Jang Wu, Juh Tzeng Lue

Research output: Contribution to journalArticle

Abstract

A theoretical analysis of the microwave propagation characteristics of a variable spacing planar high-temperature superconducting waveguide in DC magnetic field is presented. It is based on the linear response vortex dynamics, in which the two-fluid model is generalized to include the effects of the moving vortices. Firstly a sinusoidal field solution for this structure is derived, and then the propagation properties such as the attenuation constant, phase velocity and quality factor are investigated by exploiting the material parameters of the superconductors together with dielectric substrates. The effects of the variable spacing and vortices are also illustrated and discussed.

Original languageEnglish
Pages (from-to)403-410
Number of pages8
JournalPhysica C: Superconductivity and its applications
Volume383
Issue number4
DOIs
Publication statusPublished - 2003 Jan 1

Fingerprint

Vortex flow
Waveguides
direct current
Microwaves
spacing
vortices
Magnetic fields
waveguides
microwaves
magnetic fields
two fluid models
propagation
Phase velocity
phase velocity
Temperature
Superconducting materials
Q factors
attenuation
Fluids
Substrates

Keywords

  • Field solution
  • Microwave
  • Mixed state
  • Waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

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AB - A theoretical analysis of the microwave propagation characteristics of a variable spacing planar high-temperature superconducting waveguide in DC magnetic field is presented. It is based on the linear response vortex dynamics, in which the two-fluid model is generalized to include the effects of the moving vortices. Firstly a sinusoidal field solution for this structure is derived, and then the propagation properties such as the attenuation constant, phase velocity and quality factor are investigated by exploiting the material parameters of the superconductors together with dielectric substrates. The effects of the variable spacing and vortices are also illustrated and discussed.

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