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Optimization of Dual-Band BPF using Defected GroundStructure

Anjali Sachan*, Arvind Kumar Pandey**, R. K. Chauhan***

** Ph.D Scholar, Madan Mohan Malaviya University of Technology, Gorakhpur, India.

*** Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur,India.

Periodicity:August - October'2016
DOI : https://doi.org/10.26634/jcs.5.4.8204

Abstract

In this paper, a new Defected Ground Structure (DGS) is proposed with an aim to reduce the size of already existing filter and increase the fractional bandwidth of the band-pass filters. The proposed DGS is applied to the previously designed Dual-Band Pass Filter (BPF), which was operating at 2.45 GHz and 5.2 GHz. On using this defected ground structure, the operating frequency of the first pass band reduces from 2.45 GHz to 2.197 GHz, whereas operating frequency of second pass band reduces from 5.2 GHz to 4.8 Ghz. The increase in fractional bandwidth was also observed at first pass-band.
The size of the Dual-Band BPF with DGS is 0.11 λ_g × 0.21 λ_g , and size of Dual-Band BPF without DGS is 0.11λ_g × 0.23λ_g . The size of the Dual-Band BPF is therefore reduced to 8.69% after using the proposed DGS.

Keywords

Dual-Band BPF (DBPFs), Defected Ground Structures (DGSs), Square Ring Loaded Resonator (SRLR).

How to Cite this Article?

Sachan, A., Pandey, A. K., and Chauhan, R.K. (2016). Optimization of Dual-Band BPF using Defected Ground Structure. i-manager’s Journal on Communication Engineering and Systems, 5(4), 23-28. https://doi.org/10.26634/jcs.5.4.8204

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