scholarly journals NEGATIVE GROUP VELOCITY IN A SPLIT RING RESONATOR-COUPLED MICROSTRIP LINE

2009 ◽  
Vol 94 ◽  
pp. 33-47 ◽  
Author(s):  
Giuseppina Monti ◽  
Luciano Tarricone
Keyword(s):  
Group Velocity ◽  
Microstrip Line ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Negative Group ◽  
Split Ring ◽  
Negative Group Velocity

Split-ring resonator-loaded X-band waveguide supporting negative group velocity

2018 ◽  
pp. 291-308
Author(s):  
Joaquim J. Barroso ◽  
Joaquim P. Leite ◽  
Pedro J. Castro ◽  
Ugur C. Hasar ◽  
Jose Edimar B. Oliveira
Keyword(s):  
Group Velocity ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Negative Group ◽  
Split Ring ◽  
X Band ◽  
Negative Group Velocity

Multi-Channel Metamaterial Sensor Based on Split Ring Resonator

2013 ◽  
Vol 787 ◽  
pp. 24-29
Author(s):  
Jie Zhang ◽  
Wei Shi ◽  
Mo Hai Guo
Keyword(s):  
Degrees Of Freedom ◽  
Microstrip Line ◽  
Ring Resonator ◽  
Single Channel ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Full Wave ◽  
Artificial Materials ◽  
Design Aspect ◽  
Good Agreement

Metamaterials are artificial materials engineered to have exotic properties that may not be found in nature, and it provides a novel tool to significantly enhance the sensitivity of sensors, and open new degrees of freedom in sensing design aspect. In this paper, a metamaterial sensor based on microstrip-line-excited SRR is developed, and its properties are analyzed in theory and simulated by full wave simulations. The results show good agreement with the theory. On this basis, single-channel sensor is extended to two channels and even four channels sensor. By observing and comparing the transmission profile by putting different sample on every channel, we found that the multi-channel sensor can work independently and posses good selectivity. Furthermore, the sensitivity of sensor will be greatly enhanced with the increase of SRR thicknesses. This work would pave a new way to design sensor with higher performance.

A Hybrid Approach on Metamaterial-Loaded Fractal Antenna Design

2020 ◽  
Vol 35 (9) ◽  
pp. 1022-1029
Author(s):  
Dudla Prabhakar ◽  
C. Rajendra Babu ◽  
V. Adinarayana ◽  
V. Prasad
Keyword(s):  
Microstrip Line ◽  
Ring Resonator ◽  
Structural Parameters ◽  
Hybrid Approach ◽  
Split Ring Resonator ◽  
Unit Cell ◽  
Dual Band ◽  
Fractal Antenna ◽  
Split Ring ◽  
Unit Cells

The paper provides the interoperable hybrid Grasshopper–Grey Wolf optimization (GHGWO) of the Square Split-Ring Resonator (SRR) metamaterial unit cell. This paper discusses the complex phase strategies of the electric and magnetic interplay of the charged microstrip line of the split ring resonator (SRR). Optimized unit of metamaterial cells for their bandwidth enhancement is packed into a new square fractal antenna. In the interim period of dual band efficiency, a new design is introduced for a microstrip line-feeding square fractal antenna with a faulty ground composition. In the second stage, a quasi-static SRR model is being used to streamline its structural parameters in an effort to reinforce the bandwidth so that optimized composition resonates at the required intensity area. In the GHGWO hybrid algorithm, SRR unit cell size limitations should be optimized and the convergence actions of the algorithm improved. Certain evolutions termed modified hybrid BF-PSO classical BFO, chaos PSO and IWO are being tested for efficiency of the Hybrid GHGWO algorithm. In the final stage, optimized SRR unit cells are stacked into a square fractal antenna that provides bandwidth output suited to wireless usages with upper and lower band. The prototype square fractal antenna without and with SRR unit cells is efficiently evaluated by trial results.

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