Design of a Nanoelectronics-Enabled Semi-Circled Horn-Inspired Bow-Tie MIMO Antenna with Superior Port Isolation

This paper presents the design and analysis of a nanoelectronics-enabled semi-circled horn-inspired bow-tie Multiple-Input Multiple-Output (MIMO) antenna with superior port isolation for next-generation wireless applications. The proposed antenna integrates nanoelectronic components, such as nanoscale conductive layers and compact decoupling elements, to enhance electromagnetic field confinement and minimize mutual coupling between closely spaced radiating elements. The semi-circled horn-like geometry is optimized to achieve wide impedance bandwidth and directional radiation characteristics, while the bow-tie structure ensures compactness and multi-band operability. A novel nanoelectronic-assisted isolation mechanism is introduced, which significantly suppresses surface current propagation across antenna ports. The antenna operates in the 3.2–10.5 GHz frequency range, covering sub-6 GHz and ultra-wideband (UWB) applications. Simulation and experimental results demonstrate an impedance bandwidth exceeding 120%, with a reflection coefficient (|S 11 |) below −10 dB. The proposed MIMO configuration achieves a high port isolation of better than −28 dB, envelope correlation coefficient (ECC) less than 0.01, and diversity gain close to 9.98 dB, indicating excellent diversity performance. Furthermore, the integration of nanoelectronic materials contributes to improved radiation efficiency of approximately 92% and gain enhancement up to 7.5 dBi. The compact size, enhanced isolation, and high efficiency make the proposed antenna a strong candidate for 5G, 6G, IoT, and high-speed wireless communication systems.