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

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.

Download Full-text

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

Jurnal Teknologi ◽

10.11113/jt.v78.8727 ◽

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.

Download Full-text

Effect of Stripline Number on Resonant Frequency of Hexagonal Split Ring Resonator Metamaterial

Journal of Aceh Physics Society ◽

10.24815/jacps.v9i1.15432 ◽

2020 ◽

Vol 9 (1) ◽

pp. 26-30

Author(s):

Romi Fadli Syahputra ◽

Yan Soerbakti ◽

Riad Syech ◽

Erman Taer ◽

Saktioto Saktioto

Keyword(s):

Electromagnetic Field ◽

Resonant Frequency ◽

Ring Resonator ◽

Negative Refractive Index ◽

Split Ring Resonator ◽

Electromagnetic Properties ◽

Strip Line ◽

Frequency Range ◽

Split Ring ◽

Resonant Frequency Shift

Piranti-piranti elektronik maupun optoelektronik yang efisien dan responsif saat ini tengah masif dikembangkan dalam beragam bentuk dan jenis. Meta-material merupakan rancangan optoelektronik yang unik dengan sifat elektromagnetik yang tidak ditemukan secara alami, salah satunya adalah peristiwa indeks bias negatif. Eksplorasi terhadap banyak ragam struktur metamaterial sangat penting dilakukan untuk mengidentifikasi karakteristik tiap struktur. Salah satu struktur metamaterial yang menarik dikaji adalah bentuk heksagonal. Penelitian ini menginvestigasi karakteristik frekuensi resonan dan distribusi medan elektromagnetik metamaterial split ring resonator heksagonal (SRR-H) yang dikombinasikan dengan stripe line (SL) berupa logam tembaga. Lebih lanjut, jumlah SL divariasikan dari 0 - 5 unit dan disimulasikan dalam medium udara dalam rentang frekuensi 1 – 7,5 GHz. Hasil simulasi menunjukan adanya pergeseran frekuensi resonan untuk tiap penambahan SL dalam rentang frekuensi 4,31 – 5,82 GHz. Sebaran medan listrik cenderung terpusat pada cincin resonator sedangkan medan magnet cenderung terdistribusi pada SL. Desain metamaterial SRR-H dengan 3 SL memberikan respon disipasi energi yang terkecil dengan medan E maksimum 2,59 kV×m-1 dan medan H maksimum 8,69 A×m-1. Desain SRR-H ini cukup potensial untuk diaplikasikan sebagai antena gelombang elektomagnetik yang efisien dan juga sebagai biosensor. Efficient and responsive electronic and optoelectronic devices are currently being massively developed in various forms and types. Metamaterial is a unique optoelectronic design with electromagnetic properties that are not found naturally, one of its properties is a negative refractive index. Exploration of different types of metamaterial structures is very important to identify the characteristics of each structure. One of the interesting metamaterial structures is a hexagonal shape. This research investigates the resonant frequency characteristics and electromagnetic field distribution of split-ring resonator (SRR-H) hexagonal-shaped metamaterial which is combined with the copper stripe line (SL). Furthermore, the number of SL is varied from 0 to 5 units and simulated in the air medium in frequency range of 1 - 7.5 GHz. The simulation results show a resonant frequency shift occurred for each SL combination in the 4.31 - 5.82 GHz frequency range. The distribution of the electric field tends to be concentrated on the resonator while the magnetic field tends to be distributed on the SL. The SRR-H metamaterial with 3 SL provides the smallest energy dissipation response with a maximum E field of 2.59 kV×m-1 and a maximum H field of 8.69 A×m-1. The SRR-H design is potential enough to be applied as an efficient electromagnetic wave antenna and also as a biosensor.Keywords: Metamaterials, SRR-H, strip line, resonant frequency, electromagnetic field

Download Full-text

Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Sensors ◽

10.3390/s21103385 ◽

2021 ◽

Vol 21 (10) ◽

pp. 3385

Author(s):

Jialu Ma ◽

Jingchao Tang ◽

Kaicheng Wang ◽

Lianghao Guo ◽

Yubin Gong ◽

...

Keyword(s):

Resonant Frequency ◽

Complex Permittivity ◽

Ring Resonator ◽

High Sensitivity ◽

Split Ring Resonator ◽

Debye Model ◽

Split Ring ◽

Liquid Samples ◽

Microwave Sensor

A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz. The liquid samples in capillary are placed in the resonant zone of the fabricated senor for high sensitivity measurement. The frequency shift of 58.7 MHz is achieved when the capillary is filled with ethanol, corresponding a sensitivity of 97.46 MHz/μL. The complex permittivity of methanol, ethanol, isopropanol (IPA) and deionized water at the resonant frequency are measured and calibrated by the first order Debye model. Then, the complex permittivity of different concentrations of aqueous solutions of these materials are measured by using the calibrated sensor system. The results show that the proposed sensor has high sensitivity and accuracy in measuring the complex permittivity of liquid samples with volumes as small as 0.13 μL. It provides a useful reference for the complex permittivity characterization of small amount of liquid chemical samples. In addition, the characterization of an important biological sample (inositol) is carried out by using the proposed sensor.

Download Full-text

Dual Band Metamaterial Split Ring Resonator as a Perfect Absorber at GHz Frequency Range

2019 Global Conference for Advancement in Technology (GCAT) ◽

10.1109/gcat47503.2019.8978454 ◽

2019 ◽

Author(s):

Pardha Sourya Nayani ◽

Amit Kumar Bhaghel ◽

Sisir Kumar Nayak

Keyword(s):

Ring Resonator ◽

Split Ring Resonator ◽

Dual Band ◽

Perfect Absorber ◽

Frequency Range ◽

Split Ring

Download Full-text

A Metamaterial Backed Dipole Antenna for High Gain Directional Communications

Advanced Electromagnetics ◽

10.7716/aem.v5i1.328 ◽

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.

Download Full-text

Design of WLAN/WiMAX band notch super-wideband microstrip fractal antennas

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078719000540 ◽

2019 ◽

Vol 11 (08) ◽

pp. 844-850 ◽

Cited By ~ 2

Author(s):

S. S. Abdpour ◽

N. Azadi-Tinat ◽

H. Oraizi ◽

J. Ghalibafan

Keyword(s):

Ring Resonator ◽

Measurement Data ◽

Split Ring Resonator ◽

Fractal Antenna ◽

Frequency Range ◽

Split Ring ◽

Feed Line ◽

Simulation Results ◽

3D Software ◽

Good Agreement

AbstractA super-wideband microstrip fractal antenna is designed with miniaturized dimensions of 21 mm × 23.5 mm × 1 mm and generation of dual rejection bands for WLAN/WiMAX systems has been achieved. The triangular fractal shape slots are placed inside a circular patch and the antenna is miniaturized by using a repetition frequency resonance technique. The proposed antenna frequency range 2.6–40 GHz operates for VSWR of less than 2. Two band rejections for the frequency ranges 5.1–5.8 GHz and 3.4–3.7 GHz are created by one enhanced slot at the feed line and one split-ring resonator at the back of antenna. HFSS 3D software was used for computer simulation. The proposed antenna is fabricated on the FR4 substrate with 1 mm thickness. The measurement data show good agreement with the simulation results.

Download Full-text

Metaheuristic Regression Equations for Split-Ring Resonator Using Time-Varying Particle Swarm Optimization Algorithm

Electronics ◽

10.3390/electronics7110300 ◽

2018 ◽

Vol 7 (11) ◽

pp. 300

Author(s):

Muhammad Mughal ◽

Tahir Ejaz ◽

Arshad ◽

Ashiq Hussain

Keyword(s):

Particle Swarm Optimization ◽

Resonant Frequency ◽

Quality Factor ◽

Ring Resonator ◽

Particle Swarm ◽

Split Ring Resonator ◽

Regression Equations ◽

Time Varying ◽

Split Ring ◽

Swarm Optimization

This article presents a new technique for determining accurate values of resonant frequency and quality factor pertaining to the split-ring resonator. Different conducting shield materials have been used around a copper split-ring. The split-ring has been designed to operate at about 2.1 GHz. Various equations were worked out earlier to determine the values of resonant frequency and quality factor. However, these equations yielded different solutions. Therefore, simulations were used to obtain the values of the resonant frequency and quality factor of the split-ring resonator with different five-shield materials, using High-Frequency Structure Simulator (HFSS) software. In this work, a novel method has been introduced for obtaining values of resonant frequency which provides results with negligible error. An optimal technique, namely time-varying particle swarm optimization (TVPSO), was then performed to obtain two sets of equations for resonant frequency and quality factor. The two sets of equations, optimized using TVPSO, were compared for their effectiveness in matching the actual frequency and quality factor for each of the five materials. It was found that the TVPSO was significant in achieving the frequency and quality factor regression equation to accurately resemble the actual values portrayed by the low mean absolute error.

Download Full-text

Shield Optimization and Formulation of Regression Equations for Split-Ring Resonator

Mathematical Problems in Engineering ◽

10.1155/2016/4754192 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Tahir Ejaz ◽

Hamood Ur Rahman ◽

T. Tauqeer ◽

Adnan Masood ◽

Tahir Zaidi

Keyword(s):

Resonant Frequency ◽

Quality Factor ◽

Ring Resonator ◽

Low Cost ◽

Split Ring Resonator ◽

Ring Resonators ◽

Regression Equations ◽

Split Ring ◽

Optimum Result ◽

5 Ghz

Microwave resonators are widely used for numerous applications including communication, biomedical and chemical applications, material testing, and food grading. Split-ring resonators in both planar and nonplanar forms are a simple structure which has been in use for several decades. This type of resonator is characterized with low cost, ease of fabrication, moderate quality factor, low external noise interference, high stability, and so forth. Due to these attractive features and ease in handling, nonplanar form of structure has been utilized for material characterization in 1–5 GHz range. Resonant frequency and quality factor are two important parameters for determination of material properties utilizing perturbation theory. Shield made of conducting material is utilized to enclose split-ring resonator which enhances quality factor. This work presents a novel technique to develop shield around a predesigned nonplanar split-ring resonator to yield optimized quality factor. Based on this technique and statistical analysis regression equations have also been formulated for resonant frequency and quality factor which is a major outcome of this work. These equations quantify dependence of output parameters on various factors of shield made of different materials. Such analysis is instrumental in development of devices/designs where improved/optimum result is required.

Download Full-text