Abstract
In this paper, we propose a compact Multiple Input Multiple Output (MIMO) antenna system with high isolation for wireless applications in 5G connected devices. This MIMO antenna system with the size of 92 × 88 mm2 consists of two elliptical antennas symmetrically arranged next to each other. Two decoupling methods which are neutralization and Defected Ground Structure (DGS) are applied to ensure diversity of the proposed MIMO antenna. The single and MIMO antennas are simulated and analyzed then fabricated and measured. A good agreement between measurements and simulations is obtained. These configurations, dedicated to covering the 3.4 GHz band ‐3.8 GHz, have shown very satisfactory performances more than ‐30 dB in terms of reduction of mutual coupling between the antennas constituting our system. MIMO diversity parameters, such as Envelope Correlation (ECC), Diversity Gain (DG), and total efficiency, are also studied for each proposed MIMO system. Thus, results demonstrate that our two proposed antenna configurations are very suitable for 5G MIMO applications.
Highlights
Wireless communication has become one of the fastestgrowing and dynamic technologies around the world over the past two decades
A very good adaptation of -43.98 dB is obtained at the 3.5 GHz frequency, which can meet the requirements of 5G wireless applications
The directivity performances for φ = 0° and φ = 90° in 2D and 3D of multiantenna systems with and without neutralization isolation techniques are presented in the following Figures 10 and 11
Summary
Wireless communication has become one of the fastestgrowing and dynamic technologies around the world over the past two decades. With the advent of the fifth-generation (5G), we are talking about “all connected” or Internet of Things (IOT) [2] These are electronic wireless connected devices, sharing information with a computer, tablet, or smartphone and able to perceive, analyze, and act according to the contexts of the environment in which they are located [3]. There are different challenges in the antenna design In this context and in order to increase the transmission rate without increasing the power of the transmitted signal or the bandwidth, one solution is to take advantage of the diversity by using several antennas at the same time in transmission and reception [6]. The distance of the separation between the different antennas must be sufficient to guarantee the independence of the signals [10]
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