Compact bandpass filter with sharp passband and wide harmonic suppression using miniaturized coupled structure loaded with stepped-impedance stubs

J. Marimuthu; K.S. Bialkowski; A. Abbosh

doi:10.1002/mop.30089

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Compact bandpass filter with sharp passband and wide harmonic suppression using miniaturized coupled structure loaded with stepped-impedance stubs

Journal article

Peer reviewed

Compact bandpass filter with sharp passband and wide harmonic suppression using miniaturized coupled structure loaded with stepped-impedance stubs

J. Marimuthu, K.S. Bialkowski and A. Abbosh

Microwave and Optical Technology Letters, Vol.58(10), pp.2505-2508

2016

DOI: https://doi.org/10.1002/mop.30089

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Abstract

A novel compact bandpass filter (BPF) with multiple harmonics suppression is proposed. The device uses low impedance feeding network and one‐sixteenth wavelength coupled line loaded with open‐ended stepped‐impedance stubs. The structure generates eleven transmission zeros which enable realizing a sharp passband and wide stopband. Based on the proposed structure, two compact BPF of size around 10 mm× 20 mm on RT6010 substrate were designed, built, and tested. The two designs have fractional bandwidths of 32% (centered at 2.45 GHz) and 23% (centered at 2.8 GHz) with wide stopband extending from 3 GHz to more than 11 GHz with more than 15 dB of attenuation.

Details

Title: Compact bandpass filter with sharp passband and wide harmonic suppression using miniaturized coupled structure loaded with stepped-impedance stubs
Authors/Creators: J. Marimuthu (Author/Creator) - School of ITEEthe University of QueenslandSt. LuciaQLD4072 Australia
K.S. Bialkowski (Author/Creator) - School of ITEEthe University of QueenslandSt. LuciaQLD4072 Australia
A. Abbosh (Author/Creator) - School of ITEEthe University of QueenslandSt. LuciaQLD4072 Australia
Publication Details: Microwave and Optical Technology Letters, Vol.58(10), pp.2505-2508
Publisher: Wiley
Identifiers: 991005541681307891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Citation topics: 4 Electrical Engineering, Electronics & Computer Science; 4.58 Wireless Technology; 4.58.2765 Microwave Filters
Web Of Science research areas: Engineering, Electrical & Electronic; Optics
ESI research areas: Engineering