Analytical Design of Two-Mode Dual-Band Filters Using E-Shaped Resonators

This paper presents a novel analytical approach for designing two-mode dual-band bandpass filters using E-shaped resonators. Based on the dual-band coupling matrix, the dimensions of the filter configuration are extracted via even- and odd-mode analysis of E-shaped resonators. The back-to-back E-sha...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 60; no. 2; pp. 250 - 260
Main Authors Kuo, Yi-Ting, Chang, Chi-Yang
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.02.2012
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Analytical approach
Applied sciences
Bandpass
Bandwidth
Circuit properties
coupling matrix
Couplings
Design engineering
Dual band
E-shaped resonator
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Filtering theory
Frequency filters
Joining
Layout
Mathematical analysis
Microwaves
Oscillators, resonators, synthetizers
Passband
Resonant frequency
Resonators
Selectivity
Simulation
two-mode dual-band filter
E-shaped resonator
two-mode dual-band filter
Mode filter
Resonator
Simulation
Analytical approach
E shape
Band pass filter
Compact design
coupling matrix
Passband
Multi-band circuit
Online AccessGet full text
ISSN0018-9480
1557-9670
DOI10.1109/TMTT.2011.2176506

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Summary:This paper presents a novel analytical approach for designing two-mode dual-band bandpass filters using E-shaped resonators. Based on the dual-band coupling matrix, the dimensions of the filter configuration are extracted via even- and odd-mode analysis of E-shaped resonators. The back-to-back E-shaped resonators provide the out-of-phase property by coupling at specific edges, and it produces good selectivity for dual-band characteristics. The proposed filters have the advantage of compact size and satisfy various requirements of filter orders and coupling coefficients at both passbands. The transmission zeros are successfully introduced into each passband in both filters. To verify the proposed method, two filters are implemented using microstrip technology. The measured results exhibit two-mode dual-band bandpass responses and agree well with simulations.
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ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2011.2176506