Investigation of Dual-Mode Microstrip Bandpass Filter Based on SIR Technique

Yaqeen S Mezaal; Jawad K Ali

doi:10.1371/journal.pone.0164916

Investigation of Dual-Mode Microstrip Bandpass Filter Based on SIR Technique

PLoS One. 2016 Oct 31;11(10):e0164916. doi: 10.1371/journal.pone.0164916. eCollection 2016.

Authors

Yaqeen S Mezaal^{1

2}, Jawad K Ali³

Affiliations

¹ Electronic and Communication Engineering Department, Cankaya University, Ankara, Turkey.
² Computer Engineering Techniques Department, Al-Esraa University College, Baghdad, Iraq.
³ Microwave Research Group, Electrical Engineering Department, University of Technology, Baghdad, Iraq.

Abstract

In this paper, a new bandpass filter design has been presented using simple topology of stepped impedance square loop resonator. The proposed bandpass filter has been simulated and fabricated using a substrate with an insulation constant of 10.8, thickness of 1.27mm and loss tangent of 0.0023 at center frequency of 5.8 GHz. The simulation results have been evaluated using Sonnet simulator that is extensively adopted in microwave analysis and implementation. The output frequency results demonstrated that the proposed filter has high-quality frequency responses in addition to isolated second harmonic frequency. Besides, this filter has very small surface area and perceptible narrow band response features that represent the conditions of recent wireless communication systems. Various filter specifications have been compared with different magnitudes of perturbation element dimension. Furthermore, phase scattering response and current intensity distribution of the proposed filter have been discussed. The simulated and experimental results are well-matched. Lastly, the features of the proposed filter have been compared with other designed microstrip filters in the literature.

MeSH terms

Algorithms
Computer Simulation
Electric Impedance*
Electromagnetic Phenomena*
Equipment Design
Models, Theoretical*

Grants and funding

This work is supported by the Scientific and Technological Research Council of Turkey (TUBITAK) for Post-Doc Research Fellowship for Foreign Citizens Program under Fund Reference (21514107-115.02-188888). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.