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Journal of Shanghai University >

2012 , Vol. 18 >Issue 5: 459 - 463

DOI: https://doi.org/10.3969/j.issn.1007-2861.2012.05.004

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Dual-Band Bandpass Filter Using Stub-Loaded Multiple Stepped-Impedance Resonators

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  • Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China

Received date: 2011-11-09

  Online published: 2012-10-30

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Abstract

A novel dual-band filter using stub-loaded multiple stepped-impedance resonators is proposed. This filter can control each center frequency independently. In order to get more degrees of freedom, the microstrip filter uses a multiple stepped-impedance structure. Due to symmetry of the structure, the traditional even-odd mode analysis can be used. A dual-band filter can easily be obtained by adjusting the impedance ratio and electrical length. The dual-band filter with 3 dB relative bandwidths of 6% and 2.6% can be applied to 2.44 GHz (WLAN) and 3.50 GHz (WiMAX), respectively. Simulation results agree well with measurements.

Key words： bandpass filter (BPF); dual-band; even-odd mode; stepped stub-loaded

Cite this article

HUANG Chun-yan,XIAO Zhong-yin,KOU Xin,CHU Jun-jun,LI Hao . Dual-Band Bandpass Filter Using Stub-Loaded Multiple Stepped-Impedance Resonators[J]. Journal of Shanghai University, 2012 , 18(5) : 459 -463 . DOI: 10.3969/j.issn.1007-2861.2012.05.004

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