Design of a Subwavelength Patch Antenna Using Metamaterials
Electron. Eng. Dept., Gyeongsang Nat. Univ., JinjuDOI: 10.1109/EUMC.2008.4751687 Conference: Microwave Conference, 2008. EuMC 2008. 38th European
Source: IEEE Xplore
We present our design of a subwavelength patch antenna using metamaterials for its small size. Metamaterials are constructed of periodic resonant embedded circuits made up of 8 times 2 loop arrays with an inductance L terminated to a series capacitor C in the substrate to create an artificial magnetic molecule. The subwavelength elements in these structures make them behave as an effective medium with negative values of permittivity and permeability at the frequencies of interest. Their performance and physical parameters can be characterized using the analytical transmission line model. To simplify construction, our antenna was composed of six substrate layers for the periodic resonant embedded loop circuits, with inductance L terminated to a series capacitor C in the substrate. The radiation characteristics of a subwavelength patch antenna using metamaterials are calculated using CST Microwave Studio. The experimental results show that the wavelength of our subwavelength patch antenna using metamaterials with rectangular LC loop arrays is 1/18 that of the conventional patch antenna without LC loop arrays. The measured results are in good agreement with the calculated results.
Conference Paper: Design and analysis of a miniature metamaterial microstrip patch antenna[Show abstract] [Hide abstract]
ABSTRACT: In this paper a miniature rectangular patch antenna is specifically designed and analyzed using metamaterial concepts. Based on an ordinary patch antenna, it has a double C shaped resonant structure embedded in the center of the substrate of the rectangular patch antenna. The resonant structure has a strong electric response in a certain frequency of interest, and can be used to construct metamaterials with negative permittivity. It is found the great impact on the antenna performance to modify the dimension to 58% of a conventional patch antenna. This antenna has strong radiation in the 45° to the horizontal direction for some specific applications within the sub-resonant band, and can construct a dual frequencies antenna under certain conditions. Numerical results verify that the novel antenna performance is satisfactorily.Antenna Technology (iWAT), 2011 International Workshop on; 01/2011
- [Show abstract] [Hide abstract]
ABSTRACT: Nanonetworks, i.e., networks of nano-sized devices, are the enabling technology of long-awaited applications in the biological, industrial and military fields. For the time being, the size and power constraints of nano-devices limit the applicability of classical wireless communication in nanonetworks. Alternatively, nanomaterials can be used to enable electromagnetic (EM) communication among nano-devices. In this paper, a novel graphene-based nano-antenna, which exploits the behavior of Surface Plasmon Polariton (SPP) waves in semi-finite size Graphene Nanoribbons (GNRs), is proposed, modeled and analyzed. First, the conductivity of GNRs is analytically and numerically studied by starting from the Kubo formalism to capture the impact of the electron lateral confinement in GNRs. Second, the propagation of SPP waves in GNRs is analytically and numerically investigated, and the SPP wave vector and propagation length are computed. Finally, the nano-antenna is modeled as a resonant plasmonic cavity, and its frequency response is determined. The results show that, by exploiting the high mode compression factor of SPP waves in GNRs, graphene-based plasmonic nano-antennas are able to operate at much lower frequencies than their metallic counterparts, e.g., the Terahertz Band for a one-micrometer-long ten-nanometers-wide antenna. This result has the potential to enable EM communication in nanonetworks.IEEE Journal on Selected Areas in Communications 12/2013; 31(12). DOI:10.1109/JSAC.2013.SUP2.1213001 · 3.45 Impact Factor
- [Show abstract] [Hide abstract]
ABSTRACT: The ability to shrink the physical dimensions of an antenna without significant performance degradation has been of great interest for over half a century. Over the decades, several antenna miniaturization techniques have been proposed, from structural modifications and lumped component loading, to the use of high permittivity/permeability materials, to the more recent applications of metamaterials. In this paper, we provide an overview of antenna miniaturization and a review of various miniaturization techniques with an emphasis on metamaterials. We choose to restrict the scope of our review primarily to antennas for which prototypes have been built and their properties measured. In particular, we concentrate on those metamaterial techniques categorized into the following groups: composite right/left-handed metamaterials, high impedance surfaces, and metamaterial-inspired techniques. Finally, we provide a summary table that allows the reader to compare the performance trade-offs between various miniaturized antennas.Journal of Electromagnetic Waves and Applications 11/2014; 28(17). DOI:10.1080/09205071.2014.972470 · 0.73 Impact Factor
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.