Compact antenna based on split ring resonator as high Q-factor antenna for liquid permittivity measurements

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shima Poorgholam-Khanjari ◽  
Ahmad Hatami ◽  
Ferdows B. Zarrabi
Keyword(s):  
Ring Resonator ◽  
Low Cost ◽  
Split Ring Resonator ◽  
Slot Antenna ◽  
Q Factor ◽  
Split Ring ◽  
Compact Antenna ◽  
Industrial Oil ◽  
5 Ghz ◽  
Permittivity Measurements

Abstract Microwave sensing is important to measure the permittivity of the materials or detecting a material. In this current work, a compact antenna for WLAN application with circular polarization is designed. We are supposed to use it as a sensor to determine the permittivity of industrial oil. For calibration of the sensor, the gasoline and petrol are utilized based on Debye theory and also butanol is checked. This antenna is designed based on Microstrip slot antenna with bent feed line and special split-ring resonator (SRR) as a metamaterial (MTM) element for 4 GHz, it is shown that metamaterial can be considered for improving the Q-factor and matching where the return loss is reduced from −16.5 to −33.5 dB and the Q-factor is increased from 2.39 to 32.9. It covers 4–5 GHz with the bidirectional pattern with gain of 4 dBi which makes it useful for putting inside of liquids. The total dimensions of this resonator are 20 × 20 × 1.6 mm and the FR-4 low-cost substrate is used and the experimental results are confirmed the simulations results by HFSS commercial full-wave software. In fact, this method can be used for fast detecting oil condition and longevity by checking the resonances’ shift and permittivity.

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

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
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.

Design and Fabrication of 3D Printed Reconfigurable Metamaterial-inspired Structures

2019 ◽  
Vol 2019 (1) ◽  
pp. 000595-000598
Author(s):  
Saranraj Karuppuswami ◽  
Avi Rajendra-Nicolucci ◽  
Saikat Mondal ◽  
Mohd Ifwat Mohd Ghazali ◽  
Premjeet Chahal
Keyword(s):  
High Temperature ◽  
Small Volume ◽  
Ring Resonator ◽  
Low Cost ◽  
Microfluidic Channel ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Liquid Samples ◽  
Volatile Organic ◽  
3D Printed

Abstract In this paper, 3D printing is used as an alternative manufacturing technique to fabricate metamaterial-inspired RF structures for liquid profiling. A dual split-ring resonator (SRR) based sensor tag is designed and integrated with a microfluidic channel for detecting different liquid samples. The sensor is 3D printed using a high-temperature resin and metallized using a custom developed metal patterning process. The sensor requires a very small volume of 8.6 μL of sample under test for detection. The resonance frequency of the SRR changes with change in sample loading and the shift is monitored for sample profiling. Different volatile organic compounds are introduced and the shift is monitored demonstrating the sensitivity of the proposed tag. The low-cost, real-time nature of the tag makes it an ideal choice for monitoring liquids along the supply chain.

A Low-Cost Multiple Complementary Split-Ring Resonator-Based Microwave Sensor for Contactless Dielectric Characterization of Liquids

2020 ◽  
Vol 20 (19) ◽  
pp. 11326-11334
Author(s):  
Ahmed Javed ◽  
Ali Arif ◽  
Muhammad Zubair ◽  
Muhammad Qasim Mehmood ◽  
Kashif Riaz
Keyword(s):  
Ring Resonator ◽  
Low Cost ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Dielectric Characterization ◽  
Complementary Split Ring Resonator ◽  
Microwave Sensor

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 Novel Symmetrical Split Ring Resonator Based on Microstrip for Microwave Sensors

2016 ◽  
Vol 16 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Rammah A. Alahnomi ◽  
Z. Zakaria ◽  
E. Ruslan ◽  
Amyrul Azuan Mohd Bahar
Keyword(s):  
Insertion Loss ◽  
Ring Resonator ◽  
Performance Enhancement ◽  
Split Ring Resonator ◽  
Q Factor ◽  
Loose Coupling ◽  
Split Ring ◽  
Linear Coupling ◽  
High Q ◽  
Microwave Sensors

Abstract In this paper, novel symmetrical split ring resonator (SSRR) is proposed as a suitable component for performance enhancement of microwave sensors. SSRR has been employed for enhancing the insertion loss of the microwave sensors. Using the same device area, we can achieve a high Q-factor of 141.54 from the periphery enhancement using Quasi-linear coupling SSRR, whereas loose coupling SSRR can achieve a Q-factor of 33.98 only. Using Quasi-linear coupling SSRR, the Q-factor is enhanced 4.16 times the loose coupling SSRR using the same device area. After the optimization was made, the SSRR sensor with loose coupling scheme has achieved a very high Qfactor value around 407.34 while quasi-linear scheme has achieved high Q-factor value of 278.78 at the same operating frequency with smaller insertion loss. Spurious passbands at 1st, 2nd, 3rd, and 4th harmonics have been completely suppressed well above -20 dB rejection level without visible changes in the passband filter characteristics. The most significant of using SSRR is to be used for various industrial applications such as food industry, quality control, bio-sensing medicine and pharmacy. The simulation result that Quasi-linear coupling SSRR is a viable candidate for the performance enhancement of microwave sensors has been verified.

scholarly journals Penta band single negative meta-atom absorber designed on square enclosed star-shaped modified split ring resonator for S-, C-, X- and Ku- bands microwave applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Md. Rashedul Islam ◽  
Mohammad Tariqul Islam ◽  
Md. Moniruzzaman ◽  
Md. Samsuzzaman ◽  
Haslina Arshad
Keyword(s):  
Ring Resonator ◽  
Surface Current ◽  
Good Deal ◽  
Split Ring Resonator ◽  
Unit Cell ◽  
Q Factor ◽  
Split Ring ◽  
Ring Shape ◽  
Microwave Applications ◽  
Meta Atom

AbstractThis paper represents a penta band square enclosed star-shaped modified split ring resonator (SRR) based single negative meta-atom absorber (MAA) for multi-band microwave regime applications. FR-4 low-cost material has been used as a substrate to make the MAA unit cell with 0.101λ0 × 0.101λ0 of electrical size, where λ0 is the wavelength calculated at the lower resonance frequency of 3.80 GHz. There are two outer square split ring and one inner star ring shape resonator of 0.035 mm thickness of copper placed on the one side, and another side of the substrate has full copper to construct the desired unit cell. The MAA unit cell provides five absorption peaks of 97.87%, 93.65%, 92.66%, 99.95%, and 99.86% at the frequencies of 3.80, 5.65, 8.45, 10.82, and 15.92 GHz, respectively, which covers S-, C-, X-, and Ku- bands. The properties of MAA have been investigated and analyzed in the E-, H-fields and surface current. The EMR and highest Q factor of the designed MAA is 9.87 and 30.41, respectively, and it shows a single negative (SNG) property. Different types of parametric analysis have been done to show the better performance of absorption. Advanced Designed System (ADS) software has been used for equivalent circuit to verify the simulated S11 result obtained from the CST-2019 software. Experimental outcomes of the MAA unit cell have a good deal with the simulated result and measured result of the 24 × 20 array of unit cells also shown. Since the unit cell provides superior EMR, excellent Q-factor, and highest absorption so the recommended MAA can be effectively used as a penta band absorber in microwave applications, like notch filtering, sensing, reducing the unintended noise generated with the copper component of the satellite and radar antennas.

Q-factor control in asymmetry single circular split ring resonator via positon of gap

2017 ◽  
Author(s):  
Chaiyong Soemphol ◽  
Phatsagul Thitimahatthanagusol ◽  
Ekajit Khoomwong ◽  
Mongkol Kupimai
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Q Factor ◽  
Split Ring
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