论文信息 - A Compact Dual-Passband Filter Using Stepped-Impedance Resonators

A Compact Dual-Passband Filter Using Stepped-Impedance Resonators

In this letter, a new coupling configuration of the stepped-impedance resonator (SIR) has been presented to design dual-passband filters with the small circuit size. We design the filter with higher selectivity based on SIR direct-coupling, input, and output external quality factors. Through resonance characteristics of a SIR, the second resonant frequency can be tuned by adjusting structure parameters. The agreement between measured results and full-wave simulation prediction validates the feasible configuration of the proposed filters. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2514–2517, 2013

Lin-Chuan Tsai

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