Parameters Extraction of Miniaturized Metamaterial Unit Cell at Millimeter Wave Applications

A Metamaterial (MTM) is an artificial structure with electromagnetic characteristics which are not available naturally in any other materials. This MTM gained an importance in various 5G applications as its performance improvement especially in antenna design. In this paper, a wide band MTM (−10dB bandwidth equal to 1 GHz), miniaturized size, and double negative properties has designed for millimeter wave frequencies. The proposed MTM has printed on the substrate layer of Rogers5880 with permittivity of 2.2 and loss tangent is 0.0009, operating at 28 GHz to be suitable for 5G applications. To achieve metamaterial properties, the permittivity, permeability, refractive index, and impedance have been extracted using retrieve robust method from the reflection coefficient and transmission coefficient. The simulation results revealed that the proposed MTM unit cell attains the lowest loss and double negative nature DNG at resonant frequency.