Geometrical structures and fundamental characteristics of microwave stepped-impedance resonators

/spl lambda//sub g//4-,/spl lambda//sub g//2-, and /spl lambda//sub g/-type transmission-line stepped-impedance resonators (SIRs) have been proposed and various practical applications have been reported on the basis of the analysis related to each resonator. This paper standardizes these three types...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 45; no. 7; pp. 1078 - 1085
Main Authors Sagawa, M., Makimoto, M., Yamashita, S.
Format Journal Article
LanguageEnglish
Published IEEE 01.07.1997
Subjects
Availability
Band pass filters
Coaxial components
Composite materials
Equivalent circuits
Impedance
Mobile antennas
Resonance
Transmission line discontinuities
Transmission lines
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Summary:/spl lambda//sub g//4-,/spl lambda//sub g//2-, and /spl lambda//sub g/-type transmission-line stepped-impedance resonators (SIRs) have been proposed and various practical applications have been reported on the basis of the analysis related to each resonator. This paper standardizes these three types of SIRs and systematically summarizes their fundamental characteristics, such as resonance conditions, resonator length, spurious (higher order) responses, and equivalent circuits. Practical applications which employ features of three types of SIRs are investigated with demonstrations of specific structures. Original design formulas with respect to /spl lambda//sub g/-type dual-mode resonators are analytically derived. Advanced SIR's using composite material and multisteps are also introduced and their availability is discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0018-9480
1557-9670
DOI:10.1109/22.598444