In this article, a four-port circularly polarized printed multiple-input multipleoutput (MIMO) antenna is designed to cover Wi-Fi/WLAN (5 GHz), Wi-MAX (3.4-3.6), and C band applications, which consists of four trapezoidal shaped patches with microstrip feed. To achieve high isolation between the ports, the antenna elements are located orthogonally to each other. The antenna elements are separated by placing diagonal lines to further enhance the port isolation. Circular polarization is achieved by modifying the ground plane and

No abstract

This article focuses on Metamaterial inspired UWB-MIMO fractal antenna. Antenna loaded with the metamaterial structure achieved an impedance bandwidth of 5.8-15 GHz (98.63 %). Mutual coupling between the two radiating elements is obtained to be less than -25 dB. The patterns of radiation are stable over the operating range and a peak gain of 6.2 dBi is obtained at 14 GHz. Throughout the operating range, the radiation efficiency is > 88%. The obtained Envelope correlation coefficient-ECC (<0.07), Mean effective gain-MEG (< 3 dB), Total active reflection coefficient-TARC (< -10 dB) and Diversity gain-DG (>9.98) proved that the desired antenna has a good diversity performance. The measured and simulated results are well adjusted, so that the antenna can be used for ultra-wide band applications. Simulation is conducted using HFSS simulation tool and printed on a 30 x 30 x 1.6 mm 3 FR4 material.

No abstract

No abstract