Microstrip Antenna Gain Enhancement using Near Zero Refractive Index Metamaterials

Near - zero refractive index photonics

The control and manipulation of light on the nanoscale — the primary aim of nanophotonics — is of fundamental scientific interest and plays a key role in telecommunication technologies and energy management. Yet, because light–matter interactions are usually weak and hard to confine, they often need to be assisted by the use of suitably designed macroscopic media. For instance, the use of caref...

Metamaterials: electromagnetic enhancement at zero-index transition.

Resonant enhancement of electromagnetic waves propagating at oblique incidence in metamaterials, with dielectric permittivity and magnetic permeability linearly changing from positive to negative values, has been predicted and theoretically studied. This effect occurs for both TE and TM polarizations near the point where a refractive index changes its sign. Our model elucidates the unique featu...

Gain Enhancement of the Vivaldi Antenna with Band Notch Characteristics Using Zero-index Metamaterial

In this letter, a tapered slot ultrawide band (UWB) Vivaldi antenna with enhanced gain having band notch characteristics in the WLAN/WiMAX band is presented. In this framework, a reference tapered slot Vivaldi antenna is first designed for UWB operation that is, 3.1–10.6 GHz using the standard procedure. The band-notch operation at 4.8 GHz is achieved with the help of especially designed comple...

Negative refractive index metamaterials

a negative index of refraction over a band of microwave frequencies1. This demonstration of a previously unexploited electromagnetic (EM) property proved the importance of engineered materials and has resulted in an extraordinary amount of continued development by scientists working in optics, electromagnetism, physics, engineering, and materials science. Experimental results revealing new phen...

Gain and Bandwidth Enhancement in Compact Microstrip Antenna

In the present work, a new compact microstrip patch antenna has been proposed in stacked configuration. The characteristics of the antenna are obtained in terms of return loss, gain and bandwidth and are compared with the conventional microstrip patch. It is observed that the new proposed configuration reduces the patch area by 66.34% and at the same time enhances the gain and bandwidth signifi...

Loss-compensated broadband epsilon-near-zero metamaterials with gain media