scholarly journals Microfluidic as Liquid Lens for THz Reconfigurable Antenna and Gain Enhancement With Sensing Application

2021 ◽  
Author(s):  
Sepideh Ebrahimi
Keyword(s):  
Pure Water ◽  
Split Ring Resonator ◽  
Slot Antenna ◽  
Reconfigurable Antenna ◽  
Dielectric Resonator Antenna ◽  
Split Ring ◽  
High Q ◽  
Gain Enhancement ◽  
Novel Structure

Abstract the lens plays important role in the dielectric resonator antenna (DRA) for increasing the bandwidth and directivity. Also, the liquids like water and ethanol can be noticed for developing the DRA for THz application. In addition, the liquids are interesting because the level and quality of material can be used for designing reconfigurable antenna. For the THz spectrum, the liquids can be combined with antenna and microwave devices by Microfluidic technology. In this paper, the suggested antenna is used to enhance the various factors of the antenna and the filling ratio of the channels is noticed to provide reconfigurable antenna. The slot antenna with split ring resonator and meandered feed is used as the basic antenna to provide high Q-factor. Moreover, the results show that this novel structure can be used as sensor for material detecting which is used to recognize various types of liquids by determining the sensitivity of the sensor in the range of 0.5 to 1 THz. The proposed sensor is examined for pure water, ethanol and gasoline based on the 2nd order model of Debye.

Gain Enhancement for Broadband Periodic Endfire Antenna by Using Split-Ring Resonator Structures

2012 ◽  
Vol 60 (7) ◽  
pp. 3513-3516 ◽  
Author(s):  
Wenquan Cao ◽  
Bangning Zhang ◽  
Aijun Liu ◽  
Tongbin Yu ◽  
Daosheng Guo ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Gain Enhancement

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 Detection of Water Quality using Defected Ground Double Split Ring Resonator

2019 ◽  
Vol 8 (4) ◽  
pp. 12207-12209
Keyword(s):  
Resonant Frequency ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Single Element ◽  
Back Side ◽  
Defected Ground Structure ◽  
Medical Field ◽  
Split Ring ◽  
Quality Of Water

Water is an essential thing for life. Now days due to population growth and pollution, the quality of water is degraded. In this paper, a single element double split ring resonator (DSRR) has been presented as a sensor to detect the quality of water. Here, two square shape metallic split rings are designed along with the microstrip line. On the back side of the substrate, defected ground structure (DGS) is introduced. The resonant frequency of the resonator is 11.12 GHz. Quality of water is detected by the shift in S21 resonant frequency with the variation in transmission coefficient. This sensor can be used in our daily life to detect the quality of water and it may be useful in medical field also

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