Direct and inverse resonance problems for shielded composite objects treated by means of the null-field method

Author

Zheng, Wenxin

Author_Institution

Dept. of Electromagn. Theory, R. Inst. of Technol., Stockholm, Sweden

Volume

37

Issue

11

fYear

1989

fDate

11/1/1989 12:00:00 AM

Firstpage

1732

Lastpage

1739

Abstract

Resonances of a composite object shielded by a perfect conductor are investigated using the null-field method. Computed resonance frequencies and quality factors of shielded homogeneous and composite resonators are reported and compared with previously published results whenever possible. conversely, the permittivities and geometric parameters of shielded composite objects are computed from calculated or measured complex frequencies. Good convergence and reasonable agreement with other computed and measured results are achieved for both direct and inverse resonance problems

Keywords

Q-factor; dielectric resonators; ferrite devices; permittivity; resonance; resonators; complex frequencies; composite resonators; dielectric/ferrite ring; direct-resonance problems; double dielectric disc; geometric parameters; inverse resonance problems; null-field method; perfect conductor; permittivities; quality factors; resonance frequencies; shielded composite objects; Dielectric losses; Electromagnetic shielding; Electromagnetic waveguides; Geometry; Magnetic materials; Permittivity; Q factor; Resonance; Resonant frequency; Waveguide discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.41038

Filename

41038