Graphene-Based Log-Periodic Dipole Antenna-Shaped MIMO Antenna Structure for the Terahertz Frequency Spectrum

Log-periodic dipole antenna-shaped multiple-input multi-output (MIMO) with multiband operation features employing graphene resonator material operating in the 1–30 THz frequency range was proposed for numerical analysis. The main aim of the proposed MIMO antenna structure is to achieve a future CMOS and communication device-compatible structure. This research also aims to achieve a wide band of operation with miniaturization of size operating at the THz frequency spectrum. There were four types of an antenna structure with single- and multi-element log-periodic MIMO antenna structure that is numerically investigated. Several antenna parameters such as reflectance loss, gain, radiation patterns and other MIMO antenna parameters are investigated to check the compatibility for short-distance communication. Compatibility and the limitations of speaking over a short distance are also considered while determining these criteria. The THz MIMO antenna provides strong isolation values and an operating band. This construction has a maximum gain of 14 dBi and an overall bandwidth of 13 THz. Furthermore, the values of the different MIMO antenna parameters MEG (− 0.5 dB to 0.5 dB), ECC (0–0.04), DG (~ 10 dB), TARC (< − 10 dB) and CCL (0–3 bits/s/Hz) which makes overall compatible antenna for the better multichannel operation are observed. Specifically, the suggested antennas are intended to be used in three frequency ranges ranging from 1 to 30 THz. The objective of this study is to devise an innovative construction for a terahertz antenna capable of delivering a gain that is high and a bandwidth that is extraordinarily wide, while retaining the customary compact antenna size required for terahertz applications.