Design and packaging of ultra‐wideband multiple‐input‐multiple‐output/diversity antenna for wireless applications
Kunal Srivastava, Sachin Kumar, Binod Kumar Kanaujia, Santanu Dwari
Abstract
In this article, a new compact eight-element three-dimensional (3D) design of ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna is proposed. For realizing polarization diversity, four elements of the MIMO antenna are oriented horizontally and four elements are arranged vertically. In the horizontal arrangement, the antenna resonating elements are placed orthogonally to each other, which reduces interelement coupling and offers a consistent link with the wireless systems/devices. The proposed antenna shows a bandwidth (S11 ≤ −10 dB) of 17.99 GHz (2.83-20.82 GHz) and isolation larger than 15 dB in the resonating band. The proposed MIMO/diversity antenna performance parameters such as envelope correlation coefficient, diversity gain, and total active reflection coefficient are evaluated and presented. Furthermore, the unit cell of the MIMO system is simulated for the packaged environment and it is observed that the antenna housing does not affect the antenna performance.