Simple Structure E-Plane Decoupled Millimeter Wave Antenna Based on Current Cancellation Model

A simple structure E-plane decoupled millimeter wave (mmW) multiple-input multiple-output (MIMO) antenna based on current cancellation model is proposed in this communication. First, a coupling Id of &plane MIMO antenna is established by analyzing the coupling current. Then. a high-isolation two-element E-plane MIMO antenna loaded with decoupling branch Bar-L is designed by current cancellation method. Finally, a high-isolation four-element E-plane MIMO antenna is designed, fabricated, and measured to verify the applicability of the decoupling methyl in large arrays. The measured results show that the antenna achieves vertical bar S-11 vertical bar <-10 dB in band of 25.5-26.5 GHz, and the measured isolation of adjacent ports in this band is greater than 35 413, which effectively improves the isolation without deteriorating other performance. The proposed antenna with a simple structure is suitable for mmW MIMO systems requiring high isolation.

Automated summary

A simple structure E-plane decoupled millimeter wave (mmW) MIMO antenna based on current cancellation model is proposed in this communication. The coupling current model is established by analyzing the coupling current, and a decoupling branch antenna is designed using current cancellation method. The applicability of the antenna in large arrays is verified through measurement results, achieving high isolation requirements.