Experimental Study of Transmission and Reflection Characteristics of a Gradient Array of Metamaterial Split-Ring Resonators

Castro, P.J.; Barroso, Joaquim J.; Neto, Joaquim P. Leite; Tomaz, Antonio; Hasar, Uğur Cem

doi:10.1590/2179-10742016v15i4658

Cited by 8 publications

(2 citation statements)

References 18 publications

(9 reference statements)

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“…Authors in [8] present the H-plane filter using horizontal and vertical stepped thin wire conductors connecting the opposite waveguide walls. The usefulness of the SRRs is verified for compact waveguide H-plane filter design in [9][10][11][12][13] and for the E-plane filter design in [14][15][16][17].…”

Section: Bandstop Filter Designmentioning

confidence: 99%

Design of microwave waveguide filters with effects of fabrication imperfections

Mrvić¹,

Stefanovski-Pajovic²,

Potrebić³

et al. 2017

FACTA U EE

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This paper presents results of a study on a bandpass and bandstop waveguide filter design using printed-circuit discontinuities, representing resonating elements. These inserts may be implemented using relatively simple types of resonators, and the amplitude response may be controlled by tuning the parameters of the resonators. The proper layout of the resonators on the insert may lead to a single or multiple resonant frequencies, using single resonating insert. The inserts may be placed in the E-plane or the H-plane of the standard rectangular waveguide. Various solutions using quarter-wave resonators and splitring resonators for bandstop filters, and complementary split-ring resonators for bandpass filters are proposed, including multi-band filters and compact filters. They are designed to operate in the X-frequency band and standard rectangular waveguide (WR-90) is used. Besides three dimensional electromagnetic models and equivalent microwave circuits, experimental results are also provided to verify proposed design. Another aspect of the research represents a study of imperfections demonstrated on a bandpass waveguide filter. Fabrication side effects and implementation imperfections are analyzed in details, providing relevant results regarding the most critical parameters affecting filter performance. The analysis is primarily based on software simulations, to shorten and improve design procedure. However, measurement results represent additional contribution to validate the approach and confirm conclusions regarding crucial phenomena affecting filter response.

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Section: Bandstop Filter Designmentioning

confidence: 99%

Design of microwave waveguide filters with effects of fabrication imperfections

Mrvić¹,

Stefanovski-Pajovic²,

Potrebić³

et al. 2017

FACTA U EE

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“…A metamaterial structure provides unique property for its electromagnetic response with its negative dielectric permittivity "ε" and negative magnetic permeability "µ". The metamaterial structure such as SRR was proposed by Pendry et al [2] for its Left Hand Material (LHM) studies, this led to the beginning in the design and demonstration for CSRR based electromagnetic applications [11] [12] [13] [14]. The structure is formed by two concentric rings with splits at its opposite at the inner and outer rings.…”

Section: Csrr Designmentioning

confidence: 99%

Patch Antenna Miniaturization Using CSRR

Kumar¹

2017

OJAPr

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A novel metamaterial structure has been proposed for Electromagnetic Compatibility (EMC) applications. A patch antenna with dimension of 18 mm × 13.9 mm and resonating at 5 GHz has been designed and the effect of Double Negative (DNG) metamaterial loading for the patch size reduction as well as a lowering in resonance frequency for the fixed size patch antenna has been proposed. A size reduction of 72.5% in the patch antenna has been obtained with the loading of this metamaterial structure and the effect of loading the metamaterial shows that without reducing the size, the patch antenna can work at 3.7 GHz resonance, providing a lowering in resonance frequency by 26%. The metamaterial structure consists of two concentric loops with an outer radius of 3.1 mm. The width of the ring is 1.0 mm and the split is 0.5 mm and has been designed over a 1.57 mm thick Fr4 substrate. The bending effect of the patch antenna with and without metamaterial loading and its comparison with the planar patch antenna has been also shown here. The metamaterial structure has shown its resonance at 5 GHz and its permittivity and permeability behavior over the desired frequency range has been plotted. The simulation of traditional patch antenna and patch antenna over metamaterial has been compared for its return loss, VSWR, gain and efficiency. Finally, a spice circuit for the S parameter of the metamaterial, patch antenna and patch antenna loaded with metamaterial has been obtained using Matlab and ADS for its equivalence to 3D field solver and its comparison has been plotted for its verification.

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