Mutual Coupling Reduction Techniques for UWB-MIMO Antenna for Band Notch Characteristics: A Comprehensive Review

With the rapid advancements in wireless communication systems, the applications that have emerged recently such as the Internet of Things (IoT), machine-to-machine communication, vehicular communication and video on demand, etc. require very high data rates in short-range communication for better reliability. Antenna systems utilized in traditional communications are not suitable for these applications. Ultra Wide Band (UWB)-Multiple Input Multiple Output (UWB-MIMO) antennas have proved to fit these requirements owing to their improved capability and reliability in short-range communication. The major challenge in designing the UWB-MIMO antennas is to reduce the mutual coupling effects among multiple antennas. In this paper, various techniques for mutual coupling reduction are presented and analyzed such as Electromagnetic band-gap (EBG) structures, meta-materials, parasitic or slot, and stub structures, neutralization lines, etc.

Automated summary

With the rapid advancements in wireless communication systems, new applications such as IoT, machine-to-machine communication, vehicular communication, and video on demand require high data rates in short-range communication. Traditional antenna systems are not suitable for these applications. UWB-MIMO antennas have proven to be a suitable solution due to their improved capability and reliability in short-range communication. The main challenge in designing UWB-MIMO antennas is reducing the mutual coupling effects among multiple antennas. This paper presents and analyzes various techniques for mutual coupling reduction, including EBG structures, meta-materials, parasitic or slot, and stub structures, neutralization lines, etc.