Development and Characterisation of Compact Wide-band Rejection Metamaterial Filters Using Triangular and Elliptic Split-Ring Resonators

In this paper presents the design of a circular microstrip fractal antenna (CMFA) loaded with parasitic edge-coupled (EC) split ring resonators (SRR) and defected ground structure (DGS). The basic resonant structure is a circular patch antenna designed at 3.2 GHz on FR4 substrate with relative permittivity 4.4, and 1.6 mm thickness. One iteration of circular patch and slots is employed to form it fractal and so as to attain multiband performance, the antenna is inset fed by a 50? microstrip line. Further the work is extended to demonstrate the effect of placing split ring resonator to particular position of substrate, improves the impedance matching leading to improved bandwidth. In addition L shaped defected ground structures are used to improve the antenna performance. . A comparison between fractal antenna with and without SRRs and DGS is made and the results verifies that a better gain improvement and return loss. The dimensions of the antenna are 45 mm x 45 mm and it can be used for ultra wide band (UWB) applications.

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Circularly polarized array antenna based on dual split ring resonators (DSRRs)

Frequenz ◽

10.1515/freq-2020-0215 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Ghulam Fatima Kakepoto ◽

Shaoqiu Xiao ◽

Farman Ali Mangi

Keyword(s):

Microstrip Antenna ◽

Communication Systems ◽

Wide Band ◽

Array Antenna ◽

Ring Resonators ◽

Impedance Bandwidth ◽

Split Ring ◽

Circularly Polarized ◽

Split Ring Resonators ◽

Linearly Polarized

Abstract A wideband circularly polarized (CP) array antenna has significant importance in modern communication system. In this paper, we proposed a wide band CP array by combing dual split ring resonators (DSRRs) to dual layer microstrip antenna. A 2 × 2 dual-layer microstrip antenna array is used to radiate wide band linearly polarized wave, and the 3 × 3 four-layer DSRRs is used as an external polarizer which converts linearly polarized wave to circularly polarized wave at distinct frequencies. The proposed array achieves an impedance bandwidth of 20% ranging from 4.57–5.57 GHz and AR bandwidth of 16.83% ranging from 4.57–5.41 GHz. The prominent futures of the proposed array are wide impedance bandwidth on desired frequencies. This new concept is theoretically and experimentally investigated to evaluate the performance of the proposed array, which allows a better prospect for the application of radar and satellite communication systems.

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Novel SRR-loaded CPW-fed UWB antenna with wide band-notched characteristics

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078716000702 ◽

2016 ◽

Vol 9 (4) ◽

pp. 875-880 ◽

Cited By ~ 6

Author(s):

Haijun Peng ◽

Chunhua Wang ◽

Lv Zhao ◽

Jun Liu

Keyword(s):

Electromagnetic Coupling ◽

Coplanar Waveguide ◽

Wide Band ◽

Ring Resonators ◽

Ultra Wide Band ◽

Uwb Antenna ◽

Split Ring ◽

Split Ring Resonators ◽

Microstrip Lines ◽

Notch Band

This paper presents the design of a split-ring resonators (SRR) loaded coplanar waveguide-fed ultra-wide band (UWB) antenna. As using the electromagnetic coupling SRR connected by open-ended microstrip lines, this UWB antenna achieves wide band-notched characteristics. The frequency of the proposed antenna operates from 2.37 to 10.93 GHz with a broad notch band covers from 4.96 to 6.15 GHz (IEEE 802.11.ac), the relative stopped bandwidth of the notch band achieves 20.42%. Besides, theoretical analysis and experimental results are proposed to illustrate and validate this proposed antenna.

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