Browsing by Subject "Dipole antennas"
Now showing items 1-9 of 9
-
Article
Bandwidth and Directivity Enhancement of Loop Antenna by Nonperiodic Distribution of Mu-Negative Metamaterial Unit Cells
(2016)The theory, design, analysis, and verification of a wideband and unidirectional loop antenna loaded with mu-negative (MNG) metamaterial unit cells is presented. It is shown that by nonperiodic positioning of MNG unit cells ...
-
Article
A broadband dual-mode monopole antenna using NRI-TL metamaterial loading
(2009)A printed monopole antenna is proposed which uses negative-refractive-index transmission-line (NRI-TL) metamaterial loading in order to achieve a broadband dual-mode operation. The metamaterial-loaded monopole supports a ...
-
Conference Object
A compact low-profile high-impedance surface for use as an antenna ground plane
(2011)A compact and low-profile high-impedance surface is proposed which offers a significantly smaller footprint without affecting the usable reflection phase bandwidth of the structure. The unit cell of the proposed surface ...
-
Article
A Compact Multiband Printed Dipole Antenna Loaded with Two Unequal Parallel NRI-TL Metamaterial Unit Cells
(2015)A negative-refractive-index transmission-line (NRI-TL) metamaterial-loaded dipole antenna is proposed, which has a fully printed configuration and exhibits multiband performance. The antenna consists of a conventional ...
-
Article
Compact Wideband Loop Antenna Partially Loaded With Mu-Negative Metamaterial Unit Cells for Directivity Enhancement
(2016)A wideband and unidirectional loop antenna partially loaded with mu-negative (MNG) metamaterial unit cells is presented. To reduce the electrical size of the antenna, its first resonance is formed by capacitively loading ...
-
Article
Miniaturization of Planar Yagi Antennas Using Mu-Negative Metamaterial-Loaded Reflector
(2017)A technique to reduce the size and enhance the operating bandwidth (BW) of planar Yagi antennas, while maintaining their unidirectional radiation characteristics, is proposed in this paper. In this technique, the reflector ...
-
Article
Multiband compact printed dipole antennas using NRI-TL metamaterial loading
(2012)A compact, fully-printed negative-refractive-index transmission-line (NRI-TL) metamaterial-loaded dipole antenna is proposed, which exhibits multiband resonant characteristics that are not harmonically related. The multiband ...
-
Conference Object
Negative-refractive-index transmission-line metamaterial-loaded dipole antennas
(2012)Several compact, fully-printed negative-refractive-index transmission-line (NRI-TL) metamaterial-loaded dipole antennas are proposed. The antennas achieve multi-band behaviour by loading a host dipole antenna with series ...
-
Article
Superhelices of poly[2-(acetoacetoxy)ethyl methacrylate]
(2004)Poly[2-(acetoacetoxy) ethyl methacrylate] (PAEMA) homopolymers were found to self-assemble into hierarchical superstructures, that is, double-stranded helical tubes of either screw sense (scanning force microscopy). Both ...