Antenna Miniaturization using Artificial Magneto-Dielectric Material with Split-Ring Slot

AbstractA ceramic-polytetrafluoroethylene high-permittivity dielectric material-based split-ring patch antenna of dimensions 12 mm×16 mm is presented in this paper. The measured operating bandwidths (reflection coefficient <-10 dB) range from 5.0 to 6.5 GHz (1.5 GHz), 9.1 to 9.6 GHz (500 MHz), and 10.7 to 11 GHz (300 MHz) as observed from the proposed antennas. Average gains of 0.69, 3.52, and 3.48 dBi were measured at the first, second, and third band, respectively. Radiation efficiencies of 87.3%, 88.5%, and 93.1% were achieved at three resonant frequencies 5.6, 9.5, and 10.9 GHz, respectively. The measured symmetric and nearly consistent radiation pattern makes the proposed antenna suitable for C band and X band applications. In this paper, the effects of the dielectric properties of substrate material and design parameters have been studied.

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MODELING AND ANALYSIS OF A NOVEL MICROWAVE SENSOR BASED ON WAVEGUIDE FILLING WITH A METAMATERIAL PARTICLE

Modern Physics Letters B ◽

10.1142/s021798491002238x ◽

2010 ◽

Vol 24 (03) ◽

pp. 305-313 ◽

Cited By ~ 2

Author(s):

JUN SUN ◽

MING HUANG ◽

JINGJING YANG ◽

JINHUI PENG ◽

JIHONG SHI

Keyword(s):

Dielectric Material ◽

Split Ring Resonator ◽

Negative Permittivity ◽

Detection Sensitivity ◽

Evanescent Mode ◽

Split Ring ◽

Modeling And Analysis ◽

Full Wave ◽

Microwave Sensor ◽

Meander Line

A novel microwave sensor based on waveguide filled with a metamaterial particle, which is composed of meander line and split-ring-resonator (SRR), is presented and modeled using a full wave electromagnetic commercial simulator CST. Simulating results show that evanescent mode are enhanced and transmitted through the structured particle within the frequency band that exhibits negative permittivity and permeability. Evanescent mode is sensitive to permittivity of dielectric material in the detecting zone. Comparing with conventional microwave resonant sensor, the microwave sensor using evanescent mode allows for much higher detection sensitivity.

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Radiation Characteristics of Artificial Magneto-Dielectric Antenna Loaded with Split-Ring Resonator Array

Advanced Electromagnetics ◽

10.7716/aem.v9i3.1438 ◽

2020 ◽

Vol 9 (3) ◽

pp. 32-38

Author(s):

Y. G. Adhiyoga ◽

C. Apriono ◽

E. T. Rahardjo

Keyword(s):

Ring Resonator ◽

Ground Plane ◽

Split Ring Resonator ◽

Radiation Characteristics ◽

Split Ring ◽

Array Configuration ◽

Rectangular Patch ◽

Antenna Miniaturization ◽

Measurement Results ◽

Permittivity And Permeability

This study proposes a simple artificial magneto-dielectric (MD) antenna with a split-ring resonator (SRR) loaded in an array configuration. This SRR element is used to realize the MD characteristic that is beneficial for antenna miniaturization. The simulation of material permittivity and permeability is conducted to ensure that the proposed SRR-array configuration has the expected MD characteristic. Configurations of SRR in arrays of 3×3, 5×5, 7×7, and 9 × 9 are realized to obtain its radiation characteristics when embedded in the antenna ground plane. A rectangular patch antenna is used in this study. Based on the simulation, the proposed antenna with an SRR array of 5×5 achieves excellent MD characteristics with high permittivity and permeability of 32.44 and 51.39, respectively. Furthermore, a microstrip antenna loaded with the SRR 5×5 arrays are fabricated on RT/duroid 5880 substrate. It has a dimension of 0.31λ0 × 0.26λ0. The simulation and measurement results of the proposed antenna show a fractional bandwidth of 4.79% and 5.2% at 1.5 GHz; and a maximum gain of 5.20 dB and 4.95 dB, respectively. Good agreement between the simulated and the measured results was achieved.

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