Harmonic Suppression in an In-Line Chebyshev Bandpass Filter by Asymmetrical Perturbations

Present article provides the design of an in-line parallel-coupled Chebyshev bandpass filter centered at 5.25GHz with a fractional bandwidth of 20% for WLAN applications. The coupled-lines are modified by asymmetric rectangular perturbations subject to strong and weak coupling. The proposed filter s...

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Bibliographic Details
Published in2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) pp. 1 - 5
Main Authors Das, Tarun Kumar, Chatterjee, Sayan
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2017
Subjects
Band-pass filters
bandpass filter
coupled-lines
Couplings
Filtering theory
harmonic suppression
Harmonics suppression
microstrip
Microstrip filters
Microwave filters
Perturbation methods
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Summary:Present article provides the design of an in-line parallel-coupled Chebyshev bandpass filter centered at 5.25GHz with a fractional bandwidth of 20% for WLAN applications. The coupled-lines are modified by asymmetric rectangular perturbations subject to strong and weak coupling. The proposed filter structure exhibits second harmonic suppression of 51dB with a size reduction of 71 % and 31% compared to conventional and folded parallel-coupled lines filters respectively.
ISSN:2377-9152
DOI:10.1109/IMaRC.2017.8449689