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A novel wideband bandpass filter using H-shaped DGS

Do, V.-P. and Luong, D.-M. and Ta, C.-H. and Doan, M.-T. (2018) A novel wideband bandpass filter using H-shaped DGS. International Journal of Electrical and Computer Engineering, 8 (4). pp. 2021-2028. ISSN 20888708

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Abstract

This paper presents a novel compact wide-band bandpass filter (BPF) having good selectivity. It is designed using a dual-plane structure which consists of a parallel-coupled microstrip line on the upper surface and three H-shape defected ground structure (DGS) on the ground plane. By adding three H-shape DGS units on the ground plane, then properly adjusting their dimensions and position, the bandwidth and selectivity of the designed filter can be significantly improved. A compact prototype of wide-band microstrip bandpass filter has been designed, fabricated and measured to apply for the wireless systems. The filter shows a center frequency at 4.8 GHz, passband from 2.8 GHz to 6.8 GHz with maximum insertion loss and return loss of 0.8 dB and 40 dB, respectively. The measured results agrees well with the theoretical expectations validating the proposed design. © 2018 Institute of Advanced Engineering and Science.

Item Type: Article
Divisions: Faculties > Faculty of Radio-Electronic Engineering
Identification Number: 10.11591/ijece.v8i3.pp2021-2028
Additional Information: Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9538

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