Antenna rotator

Electrical engineering

Control engineering

Antenna measurement

Antenna factor

Decoupling (probability)

MIMO

Beamforming

Bioinformatics

Biology

Dipole antenna

Engineering

Antenna efficiency

3G MIMO

Antenna (radio)

Materials science

Electronic engineering

Isolation (microbiology)

Computer science

Optoelectronics

Antenna array

Telecommunications

Coaxial antenna

Applied Sciences

With the development of 5G, Internet of Things, and smart home technologies, miniaturized and compact multi-antenna systems and multiple-input multiple-output (MIMO) antenna arrays have attracted increasing attention. Reducing the coupling between antenna elements is essential to improving the performance of such MIMO antenna system. In this work, we proposed a graphene-assembled, as an alternative material rather than metal, film-based MIMO antenna array with high isolation for 5G application. The isolation of the antenna element is improved by a graphene assembly film (GAF) frequency selective surface and isolation strip. It is shown that the GAF antenna element operated at 3.5 GHz has the realized gain of 2.87 dBi. The addition of the decoupling structure improves the isolation of the MIMO antenna array to more than 10 dB and corrects the antenna radiation pattern and operating frequency. The isolation between antenna elements with an interval of 0.4λ is above 25 dB. All experimental results show that the GAF antenna and decoupling structure are efficient devices for 5G mobile communication.

A Graphene-Assembled Film Based MIMO Antenna Array with High Isolation for 5G Wireless Communication