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Miniaturized Coplanar Waveguide Bandpass Filters Using Multisection Stepped-Impedance Resonators.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Mar2006, Vol. 54 Issue 3, p1090-1095. 6p. 2 Black and White Photographs, 11 Diagrams. - Publication Year :
- 2006
-
Abstract
- We report several types of coplanar waveguide tri-section stepped-impedance resonator (SIR) structures that offer further size reduction compared to the conventional two-section SIRs. In addition, the tri-section SIRs provide flexibility of introducing effective capacitive coupling to the ground lines for realizing slow-wave structures. The slow-wave effect can be used to implement more compact bandpass filters. The principles of achieving size reductions using tri-section SIRs are described and confirmed by simulation results. To demonstrate the effectiveness of the proposed tri-section SIRs in size reduction, the tri-section SIRs with slow-wave effects were implemented in a two-pole directly coupled bandpass filter and a fourth-order quasi-elliptic bandpass filter with reduced size. The measured results matched well with the theoretical prediction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 54
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 20883095
- Full Text :
- https://doi.org/10.1109/TMTT.2005.864126