scholarly journals Analysis of a Compact and Superdirective Metamaterial-Inspired Monopole Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Saber Dakhli ◽  
Hatem Rmili ◽  
Kourosh Mahdjoubi ◽  
Jean-Marie Floc’h ◽  
Fethi Choubani
Keyword(s):  
Ring Resonator ◽  
Ground Plane ◽  
Split Ring Resonator ◽  
Monopole Antenna ◽  
Coupling Effects ◽  
Split Ring ◽  
Parasitic Element

The directivity of a metamaterial-inspired compact (0.145λ0) monopole antenna was investigated. The proposed structure is composed of a split-ring resonator (SRR) parasitic element placed in the vicinity of a monopole antenna. Two configurations denoted by A1 and A2 were considered depending on the position of the slot in the SRR element. By analyzing simulated and measured results, the superdirectivity (7.5 dBi for A1 and 9 dBi for A2) of the structure was discussed. It is found that the monopole-SRR and/or ground plane-SRR coupling effects may be responsible for the superdirectivity of the structure.

Ultra-wide-bandwidth (UWB) microstrip monopole antenna using split ring resonator (SRR) structure

2018 ◽  
Vol 10 (1) ◽  
pp. 123-132 ◽  
Author(s):  
Dalia M. Elsheakh ◽  
Esmat A. Abdallah
Keyword(s):  
Communication Systems ◽  
Ring Resonator ◽  
Ground Plane ◽  
Circular Disk ◽  
Split Ring Resonator ◽  
Monopole Antenna ◽  
Impedance Bandwidth ◽  
Split Ring ◽  
Wide Bandwidth ◽  
Microstrip Monopole Antenna

This paper presents a procedure to model an ultra wide-bandwidth (UWB) microstrip monopole antenna. The proposed antenna is composed of three different lengths of semi-circular shapes connected with circular disk and half circular modified ground plane. The proposed antenna has a size of 50 × 50 mm2on a low-cost FR4 substrate. The antenna demonstrates impedance bandwidth of −10 dB extended from 1.5 to 11 GHz with discontinuous bandwidth at different interior operating bands. Two pairs of split ring resonator as metamaterial structure cells are inserted closely located from feeding transmission line of the antenna to achieve good impedance matching over the entire band of operation and improve the antenna performance. The fundamental parameters of the antenna including reflection coefficient, gain, radiation pattern and group delay are obtained and they meet the acceptable UWB antenna standard. High-frequency structure simulator ver. 14 is used as full-wave electromagnetic solver then the prototypes are fabricated and measured. Results show that the antenna is very suitable for the applications in UWB as well as wireless communication systems.

A Grating Monopole Antenna on Metamaterial Using MSRR for DVB-T Application

2015 ◽  
Vol 789-790 ◽  
pp. 989-992
Author(s):  
C. Zebiri ◽  
Mohamed Lashab ◽  
Fatiha Benabdelaziz ◽  
R.A. Abd-Alhameed ◽  
Fauzi Elmegri
Keyword(s):  
Ring Resonator ◽  
Ground Plane ◽  
Split Ring Resonator ◽  
Monopole Antenna ◽  
Impedance Bandwidth ◽  
Frequency Range ◽  
Split Ring ◽  
Digital Video Broadcasting ◽  
Video Broadcasting ◽  
Defected Ground Plane

This work presents a novel broadband monopole antenna for digital video broadcasting-terrestrial (DVB-T) application. The proposed antenna consists of a grating patch and a concave rectangular ground plane with defected ground plane, and the Multiple Split-Ring Resonator (MSRR). The added part in the ground plane and the meta-material are used to enable the antenna height reduction for fixed ranges of operating frequency. The antenna can operate from 468 MHz to 894 MHz frequency range corresponding to 62.5% of impedance bandwidth for |S11|<-7.5 dB. Details of the proposed antenna designs and experimental results of the constructed prototypes are presented and discussed.

Multiband omnidirectional planar monopole antenna with two split ring resonator pairs

2017 ◽  
Vol 59 (4) ◽  
pp. 753-758 ◽  
Author(s):  
Dang Oh Kim ◽  
Che-Young Kim ◽  
Dae-Geun Yang ◽  
Mohammad Sajjad Ahmad
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Monopole Antenna ◽  
Split Ring ◽  
Planar Monopole Antenna

Dual-frequency phase shifter deploying complementary split-ring resonator

2015 ◽  
Vol 8 (7) ◽  
pp. 1045-1050 ◽  
Author(s):  
Indhumathi Kulandhaisamy ◽  
Dinesh Babu Rajendran ◽  
Malathi Kanagasabai ◽  
Balaji Moorthy ◽  
Jithila V. George ◽  
...  
Keyword(s):  
Transmission Line ◽  
Phase Shifter ◽  
Ring Resonator ◽  
Ground Plane ◽  
Split Ring Resonator ◽  
Phase Shifters ◽  
Area Network ◽  
Dual Frequency ◽  
Split Ring ◽  
Complementary Split Ring Resonator

Phase shifters are indispensable microwave components. In this paper, a dual-frequency, passive, analog, and reciprocal phase shifter is proposed, deploying the phase-delay characteristics of complementary split-ring resonator (CSRR). A transmission line is loaded with a pair of CSRR in the ground plane and the phase variations are compared with an ideal transmission line. The proposed phase shifter operates in the industrial, scientific and medical (ISM) and wireless local area network (WLAN) bands, providing a phase of 180° at 2.4 GHz and 90° at 5.4 GHz for beam steering applications.

Design of a ultrawideband monopole antenna using split ring resonator for notching frequencies

2014 ◽  
Vol 56 (6) ◽  
pp. 1471-1473 ◽  
Author(s):  
Marinaldo P. Sousa Neto ◽  
Humberto C. C. Fernandes ◽  
Carlos G. Moura
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Monopole Antenna ◽  
Split Ring
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