Flexible split-ring resonator metamaterial structure at microwave frequencies

2012 ◽  
Vol 54 (6) ◽  
pp. 1415-1416 ◽  
Author(s):  
P. Menon. Ragi ◽  
K. S. Umadevi ◽  
Paul. Nees ◽  
Jovia Jose ◽  
M. V. Keerthy ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Microwave Frequencies

scholarly journals A Metamaterial Backed Dipole Antenna for High Gain Directional Communications

2016 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
V. P. Sarin ◽  
M. P. Jayakrishnan ◽  
C. K. Aanandan ◽  
M. Pezholil ◽  
V. Kesavath
Keyword(s):  
Dielectric Constant ◽  
Ring Resonator ◽  
Low Cost ◽  
High Gain ◽  
Split Ring Resonator ◽  
Dipole Antenna ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Reflection Phase ◽  
Continuous Wire

The enhanced radiation performance of a dipole antenna backed by the split ring resonator-continuous wire pair array working in the H┴ excitation scenario is presented in this paper.  The H┴ excitation scenario of the metamaterial is used to get zero reflection phase resulting in enhanced gain performance. The two layer meta-structure along with the dipole is fabricated on a low cost substrate of dielectric constant 4.4 and height 1mm. The reflection properties of the metamaterial structure and its effect on the radiation performance of the dipole antenna are presented in this paper.

scholarly journals A ring monopole quad band antenna loaded with metamaterial and slots for wireless applications

2021 ◽  
Vol 10 (5) ◽  
pp. 2716-2723
Author(s):  
Basavalinga Swamy ◽  
C. M. Tavade ◽  
Kishan Singh
Keyword(s):  
Radiation Pattern ◽  
Ring Resonator ◽  
Impedance Matching ◽  
Split Ring Resonator ◽  
Circular Ring ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Wireless Applications ◽  
Matching Performance ◽  
Ground Part

The present wireless applications demand a compact, multi-operated, and stable radiation pattern antenna with good gain and impedance matching performance. To accomplish this requirement. In this paper, we propose a compact metamaterial structure loaded quad band antenna. The structural specifications/layout of the antenna consists of a circular ring monopole fed by a microstrip line. The ground part of the antenna is loaded with a metamaterial rectangular split-ring resonator (RSRR), an L-shaped slot, and two horizontally placed rectangular slots parallel to each other. No external matching circuit is utilized and impedance matching is solely controlled by the placement of slots. The antenna shows operation at 2.1 GHz (2.01-2.24 GHz, a bandwidth of 230 MHz (WLAN)), 4.5 GHz (4.35-4.66 GHz, a bandwidth of 310 MHz (C-band)), 5.5 GHz (5.37-5.77 GHz bandwidth of 400 MHz (WiMAX)), and 7.2 GHz (7.08-7.33 GHz, a bandwidth of 250 MHz (satellite band)). The antenna exhibits good gain and stable radiation pattern in both the plane and thus can be utilized for aforementioned applications.

IMPEDANCE MODELLING OF METAMATERIAL STRUCTURE BASED ON DOUBLE QUAD-SQUARE SLOT SPLIT RING RESONATOR (DQSS-SRR) AT 4.6 GHZ

2016 ◽  
Vol 78 (6-6) ◽  
Author(s):  
Adibah Azman ◽  
Azahari Salleh ◽  
Mohamad Zoinol Abidin Abd Aziz ◽  
Mohd Kadim Suaidi ◽  
Hamzah Asyrani Sulaiman
Keyword(s):  
Resonant Frequency ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Simulation Software ◽  
Frequency Range ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Polynomial Type ◽  
Design Structure ◽  
Structure Simulation

This paper represents the impedance modelling of metamaterial structure based on Double Quad-Square Slot Split ring Resonator (DQSS-SRR). The impedance was modelled for DQSS-SRR design structures. This structure simulation works had been done in CST Microwave Studio simulation software while the impedance was modelled by using polynomial type in Matlab for resistance, R, and reactance, X, of the impedance. The modelling of the impedance was based on the length of U-slot arm (Larm) and the width of U-slot arm gap (Wgap) of the DQSS-SRR design structure .The impedances were divided into the certain ranges of length and width for dimensions of DQSS-SRR so that an accurate impedance modelling was produced. The impedance was modelled for the resonant frequency of 4.6 GHz. This DQSS-SRR structure has potential application to improve of pyramidal microwave absorber for certain frequency range.

IMPEDANCE MODELLING OF METAMATERIAL STRUCTURE BASED ON DOUBLE QUAD-SQUARE SPLIT RING RESONATOR (DQS-SRR) AT 2.4 GHZ AND 7.4 GHZ

2016 ◽  
Vol 78 (5-7) ◽  
Author(s):  
Adibah Azman ◽  
Azahari Salleh ◽  
Mohamad Zoinol Abidin Abd Aziz ◽  
Mohd Kadim Suaidi ◽  
Hamzah Asyrani Sulaiman
Keyword(s):  
Resonant Frequency ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Simulation Software ◽  
Frequency Range ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Polynomial Type ◽  
Design Structure ◽  
Structure Simulation

This paper represents the impedance modelling of metamaterial structure based on Double Quad-Square Split ring Resonator (DQS-SRR). The impedance was modelled for DQS-SRR design structures. This structure simulation works had been done in CST Microwave Studio simulation software while the impedance was modelled by using polynomial type in Matlab for resistance, R, and reactance, X, of the impedance. The modelling of the impedance was based on the length of U-slot arm (Larm) and the width of U-slot arm gap (Wgap) of the DQS-SRR design structure .The impedances were divided into the certain ranges of length and width for dimensions of DQS-SRR so that an accurate impedance modelling was produced. The impedance was modelled for the resonant frequency of 2.4 GHz and 7.4 GHz. This DQS-SRR structure has potential application to improve of pyramidal microwave absorber to for certain frequency range.

A NOVEL MICROWAVE SENSOR WITH HIGH-Q SYMMETRICAL SPLIT RING RESONATOR FOR MATERIAL PROPERTIES MEASUREMENT

2016 ◽  
Vol 78 (10-3) ◽  
Author(s):  
Rammah A. Alahnomi ◽  
Z. Zakaria ◽  
E. Ruslan ◽  
Amyrul Azuan Mohd Bahar ◽  
Noor Azwan Shairi
Keyword(s):  
Ring Resonator ◽  
Estimation Error ◽  
Split Ring Resonator ◽  
Experimental Methodology ◽  
Measurement Sensitivity ◽  
Split Ring ◽  
Coaxial Cavity ◽  
Microwave Frequencies ◽  
High Measurement ◽  
Average Estimation Error

A new sensor based on symmetrical split ring resonator (SSRR) functioning at microwave frequencies has been proposed in order to detect and characterize the properties of the materials. This sensor is based on perturbation theory, in which the dielectric properties of the material affect the quality factor and resonance frequency of the microwave resonator. Conventionally, coaxial cavity, waveguide, dielectric resonator techniques have been used for characterizing materials. However, these techniques are often large, and expensive to build, which restricts their use in many important applications. Thus, the proposed bio-sensing technique presents advantages such as high measurement sensitivity (around 400 Q-factor) with the capability of suppressing undesired harmonic spurious and permits potentially material characterization and determination.  Hence, using a specific experimental methodology, tests performed have demonstrated the biosensor ability to characterize at least four references materials with known permittivity (Air, Roger Duriod RT 5880, Roger Duriod RT 4530, FR4) and one material with unknown permittivity (Beef). Accordingly, the numerically established relations are experimentally verified for these reference materials and the results indicated that the average estimation error of measuring the permittivity was 2.56 % at resonant of around 2.2 GHz.  The proposed design is useful for various applications such as food industry, medicine, pharmacy, bio-sensing and quality control

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