Novel Tunable Peace-Logo Planar Metamaterial Unit-Cell for Millimeter-Wave Applications

Abstract

A novel class of planar metamaterial unit-cells consisting of a peace logo pattern is presented. A significant advantage of the proposed peace-logo planar metamaterial (PLPM) unit-cell over existing designs is its tunability, simplicity, and compatibility with microstrip structures. The theoretical analysis is founded on the famous transmission-line theory for the metamaterial concept. Then, the tunable dual-band two-sided PLPM (TSPLPM) unit-cell is designed by printing a similar PLPM pattern at the bottom of the substrate. The influence of the bottom PLPM pattern on the resonance frequencies of the unit-cell was analyzed by performing numerical simulations using CST Microwave Studio 2017 and HFSSv15 simulators. The results of the numerical simulations demonstrated that the proposed TSPLPM has the ability to control the resonance frequencies over 50 GHz-75 GHz for millimeterwave applications.

Gain enhancement and mutual coupling reduction of multiple‐intput multiple‐output antenna for millimeter‐wave applications using two types of novel metamaterial structures

“…Now, in order to implement the techniques outlined in Section 2, two types of unit‐cells are proposed. In Reference , two single‐band and dual‐band metamaterial structures are designed. Now, we will use both of these unit‐cells with a little bit of variation.…”

“…The geometry of the proposed MPLPM unit‐cell is shown in Figure A. It behaves as an LC circuit where the capacitance is determined by the gap of resonator (Gap), and the inductance is determined by ambiance of the resonators strips . Two waveguide ports are adjusted in the x ‐direction, and PEC as well as PMC boundaries are assigned in the xz and xy planes, respectively.…”

“…According to the design equations in Reference , the relative permeability and relative permittivity are calculated. The retrieved permeability and permittivity are shown in Figure C.…”

“…In this article, a simple method based on metamaterial concept is proposed to increase the gain and also reduce the mutual coupling in the MIMO antennas. In this regard, two new version of peace‐logo planar metamaterial (PLPM) unit‐cells have been used which are presented in Reference . The proposed unit‐cells are modified PLPM (MPLPM) and two‐sided MPLPM (TSMPLPM) structures.…”

High-gain bow-tie antenna using array of two-sided planar metamaterial loading for H -band applications

“…This topic is currently under investigation by the authors and so far, we have introduced a new dual‐band unit cell in Ref. .…”