Double-split labyrinth resonator with defective ground system for wide-band band-stop filter application

Md Jubaer Alam,Mohammad Rashed Iqbal Faruque,Sabirin Abdullah,Mohammad Tariqul Islam

doi:10.1063/1.5029968

Md Jubaer Alam, Mohammad Rashed Iqbal Faruque + Show 2 more

Open Access

https://doi.org/10.1063/1.5029968

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Abstract

A labyrinth resonator with defective ground structure (DGS) is introduced for designing a wide-band band-stop filter in order to adjust the resonating characteristics by varying the dimension of the structure to cover 2.75 – 10.30 GHz. A series of modified double-split ring resonators (DSRRs) are embedded into a 50Ω microstrip framework to attain a labyrinth structure. The Rogers RO- 3010, which has a succinct structure, is used as the substrate in the proposed wide-band band-stop filter. The realization of the architecture is explored both integrally and experimentally, and a complementary split ring resonator (CSRR) is introduced in the ground layer. The level of rejection of the filter in the stop-band region increases with the introduction of the CSRR. In addition, the filter is evaluated by applying the Nicolson-Ross-Weir approach at the filtering frequency. The effective electromagnetic parameters retrieved from the simulation of the S-parameters imply that the metamaterial structure exhibits negative refraction bands. With a promising design and wide range of double-negative characteristics, we propose a new type of filter which is suitable for a wide-band band-stop application.

Highlights

In modern communication systems, cost-effective, concise, and low-loss circuit design is in trend
The analysis started with a parametric study on different microstrip patch formations with commonly used uniform ground and complementary split ring resonator (CSRR) implemented ground, where a low profile FR-4 was used as dielectric substrate
The structure with modified patch and CSRRs applied in the ground plane showed wider bandwidths on return loss and insertion loss than other structures (5.5–11.5 GHz)

Summary

Introduction

Cost-effective, concise, and low-loss circuit design is in trend. The importance of band-stop filters has been immensely enhanced as they can operate at multiple frequencies.[1] the overall system is bound to undergo probable interferences. To handle this complexity, the use of RF components that operate in multiple bands has become significant. The possible interferences to a system are avoided, the inclusion of a band-stop filter to the system is a competent arrangement for addressing this problem.[2] Metamaterials are a good option, in this regard

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