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A wideband antenna with excellent efficiency is the most important requirement in wireless communication. In this paper, a wideband and highly efficient planner metamaterial-based microstrip patch antenna is proposed and examined. The proposed patch antenna is designed whose size is 12 × 16 mm 2  and has a metamaterial unit cell loading on the top patch and the bottom ground plane. The top unit cell, which consists of four triangular shapes capacitive coupled resonator (TSCCR) and the bottom unit cell, which is square-shaped with diagonal cross-slot (SSDCS) is loaded on patch and ground respectively. The proposed antenna gives impedance matching of −10 dB for frequency band 2.88–14 GHz. The antenna's highest gain of 7.2 dBi at 12.39 GHz, positive gain range of 1.5–7.8 dBi in its operating band, and average efficiency of 75% are attained. The wideband and high gain properties of the proposed antenna make it suitable for UWB (3.1–10.6 GHz), Wi-Max (3.5 and 5.8 GHz), 5G NR FR1 (3.3–5 GHz) and Wi-Fi 6E (5.59–7.12 GHz) application.

Metamaterial Loaded Antenna with Improved Efficiency and Gain for Wideband Application