scispace - formally typeset
Search or ask a question
Proceedings ArticleDOI

Designing multiband metamaterial loaded microstrip patch antenna for SAR applications

01 Dec 2015-pp 1-2
TL;DR: In this article, the design of metamaterial (MTM) microstrip patch antennas (MPA) for multiband and wide band applications is investigated, and the MTM unit cell S-shape loaded reactive impedance surface (S-RIS) is analyzed for square and triangular shape patch antennas.
Abstract: This paper investigates the design of metamaterial (MTM) microstrip patch antennas (MPA) for multiband and wide band applications. The MTM unit cell S-shape loaded reactive impedance surface (S-RIS) is analyzed for square and triangular shape patch antennas. The array of S-RIS unit cell formed metasurface for microstrip patch antenna. It is observed that triangular shape patch gives high bandwidth of 2GHz with directive gain of 5.53dBi while a square shape provide resonance at two frequencies.
Citations
More filters
Proceedings ArticleDOI
01 May 2016
TL;DR: The main objective of this work is to augment the benefits of the metamaterials and to enhance the antenna performance such as resonance frequency when compared to the conventional reference monopole antenna.
Abstract: In this paper, the compact monopole antenna using metamaterial has been designed and discussed. The main objective of this work is to augment the benefits of the metamaterials and to enhance the antenna performance such as resonance frequency when compared to the conventional reference monopole antenna. The antenna resonated at three frequencies 1.6, 2.33 and 5.78GHz after incorporated with negative epsilon (ENG) and is a good contribution for the L-band applications (1.6GHz-1.8GHz) and several WLAN applications.

2 citations


Cites background from "Designing multiband metamaterial lo..."

  • ...the monopole is added with a H shaped unit cell [6] at the end of the monopole such that the maximum mutual coupling occurs between the monopole and the H unit cell connected with the rectangular...

    [...]

  • ...In the third design, shown in the Fig 6 a via hole[5] is created in between the H shape unit cell and to a rectangular patch on the top of the ground in order to increase the surface current distribution’s[6] which in turn helps to increase the radiation characteristics of the antenna Fig 5....

    [...]

References
More filters
Journal ArticleDOI
TL;DR: In this article, the authors proposed a reactive impedance surface (RIS) as a substrate for planar antennas that can miniaturize the size and significantly enhance both the bandwidth and the radiation characteristics of an antenna.
Abstract: The concept of a novel reactive impedance surface (RIS) as a substrate for planar antennas, that can miniaturize the size and significantly enhance both the bandwidth and the radiation characteristics of an antenna is introduced. Using the exact image formulation for the fields of elementary sources above impedance surfaces, it is shown that a purely reactive impedance plane with a specific surface reactance can minimize the interaction between the elementary source and its image in the RIS substrate. An RIS can be tuned anywhere between perfectly electric and magnetic conductor (PEC and PMC) surfaces offering a property to achieve the optimal bandwidth and miniaturization factor. It is demonstrated that RIS can provide performance superior to PMC when used as substrate for antennas. The RIS substrate is designed utilizing two-dimensional periodic printed metallic patches on a metal-backed high dielectric material. A simplified circuit model describing the physical phenomenon of the periodic surface is developed for simple analysis and design of the RIS substrate. Also a finite-difference time-domain (FDTD) full-wave analysis in conjunction with periodic boundary conditions and perfectly matched layer walls is applied to provide comprehensive study and analysis of complex antennas on such substrates. Examples of different planar antennas including dipole and patch antennas on RIS are considered, and their characteristics are compared with those obtained from the same antennas over PEC and PMC. The simulations compare very well with measured results obtained from a prototype /spl lambda//10 miniaturized patch antenna fabricated on an RIS substrate. This antenna shows measured relative bandwidth, gain, and radiation efficiency of BW=6.7, G=4.5 dBi, and e/sub r/=90, respectively, which constitutes the highest bandwidth, gain, and efficiency for such a small size thin planar antenna.

653 citations

Journal ArticleDOI
TL;DR: In this paper, the ability of planar left-handed metamaterials based on split-ring resonators (SRRs) to radiate backwards in a certain frequency range, as predicted by theory, is demonstrated.
Abstract: The ability of planar left-handed metamaterials (LHMs) based on split-ring resonators (SRRs) to radiate backwards in a certain frequency range, as predicted by theory, is demonstrated. A comparison between an LHM and a negative permeability metamaterial in terms of the experimental backward and forward radiation cones (which are related to their dispersion diagrams) is carried out. The results of this work open the possibility to use SRRs as miniaturised and flexible radiating elements for antennas and arrays in wireless communication applications.

36 citations

Proceedings ArticleDOI
22 Jun 2003
TL;DR: In this paper, the concept of a reactive impedance surface (RIS) with a specific surface reactance can minimize the interaction between the elementary source and its image (the RIS substrate).
Abstract: The concept of a novel substrate for planar antennas, that can miniaturize the size and significantly enhance both the bandwidth and the radiation characteristics of a printed antenna on such substrate, is introduced. Using the exact image formulation for the fields of elementary sources above impedance surfaces, it is shown that a purely reactive impedance surface (RIS) with a specific surface reactance can minimize the interaction between the elementary source and its image (the RIS substrate). A RIS can be tuned anywhere between perfectly electric and magnetic surfaces (PEC and PMC) offering the unique property to achieve the optimal bandwidth and miniaturization factor. This artificial surface is designed utilizing two-dimensional periodic square patches printed on a metal-backed dielectric substrate. A simplified circuit model describing the physical phenomenon of the periodic surface representing the RIS is developed for simple analysis and design of the proposed artificial surface. Also an FDTD full-wave analysis in conjunction with the periodic boundary conditions and perfectly matched layer walls is applied to provide a comprehensive study and analysis of complex antennas on such surfaces. An example including a dipole antenna over an RIS substrate is studied and its performance is compared with those of the same antenna over PEC and PMC surfaces.

30 citations