Micro-metamaterial antenna characteristics using microring embedded silver bars

A unique micro-metamaterial antenna for light and microwave wavelength conversion is proposed, where the antenna has the form of a panda ring which consists of the mu negative metamaterial silver bars embedded at the microring center. The micro-metamaterial antenna characteristics are investigated, where the antenna resonance frequency and frequency range of 1.60 THz and 1–2.2 THz are achieved. The radiation pattern of the micro-metamaterial antenna is plotted, where the obtained gain and directivity of the antenna are − 8.13 dB. The optimum antenna radiation efficiency is 1 when the antenna has dissipative loss is neglected. The micro-metamaterial antenna can be used as a converter between light and microwave, which is useful for a wavelength converter device.