A Design of Compact Meta-material CRLH Antenna for Wireless Applications

Abstract

This article presents a compact design of a composite-right-left-handed (CRLH) antenna for wireless applications. The antenna is fed using a coplanar waveguide (CPW) feed structure. The CRLH-antenna is comprised of one CRLH unit cell. The CRLH unit cell has a series capacitance (interdigital capacitor) and a shunt inductor (stub meander inductor). The antenna achieves compactness with a small size of 16.5 mm × 26 mm × 1.6 mm, thanks to the CRLH features such as nonlinear phase. The proposed antenna achieves a size reduction of better than 50 % with respect to the microstrip patch antenna operated at the same frequency band. The operating frequency band of the proposed antenna is from 5.83GHz to 6.3 GHz for WLAN applications, dedicated short range communications (DSRC), and intelligent transportation systems (ITS). Also, the antenna fulfills a radiation performance of omnidirectional pattern. To confirm the antenna design performances, a prototype is fabricated, and the reflection coefficient and radiation patterns are measured. Furthermore, the measured results have a good match with the simulation results.

A high gain antenna utilizing Mu-near-zero metasurface structures for 5G applications

“…Recently, the metamaterial and metasurface-based antennas have drawn significant attention thanks to their low profile, high gain, low cost, and simple implementation. These antennas have numerous benefits for example compact size, broadband, frequency reconfiguration, polarization conversion, and multiband operations [7][8][9][10][11][12][13][14][15][16]. Metamaterial unit cells that have characteristics of epsilon-near-zero (ENZ) or zero-refractive-index (ZIM) become a hub nominee to change over the waves from spherical into plane waves [17][18][19].…”