Fig. 9
From: A compact dual-band reconfigurable antenna with metamaterial for IoT applications

Gain and efficiency pattern at frequencies (a), MODE 1(2.4 GHz), (b) MODE 2 (6.04 GHz).
From: A compact dual-band reconfigurable antenna with metamaterial for IoT applications
Gain and efficiency pattern at frequencies (a), MODE 1(2.4 GHz), (b) MODE 2 (6.04 GHz).