The next generation of wireless communication 5G, is
focusing on advanced antenna technologies like massive MIMO, phased arrays, and
mm-wave bands to obtain a high data rate of 10Gbps. To meet the high data rate,
the mm-wave band stands promising. The mmWave communication has one major
drawback which is, high signal loss. To overcome this disadvantage, there is a
need to design a high-gain antenna. To meet the required data rate, a MIMO
antenna must be incorporated into the system. In this paper initially, a single
antenna is designed to operate at 28GHz. Later, an antenna array of 4 elements
is constructed. The antenna array is excited using corporate feed techniques.
It is observed that the gain enhancement of 14dB is achieved with the antenna
array. The designed 4-element antenna array is transformed into a 4-port MIMO
system. The performance criteria to evaluate the MIMO system is the Envelope
correlation coefficient. The obtained ECC is around 0.05. The design also
focuses on the radiation pattern stability in the operating bandwidth. The
array operates from 27.9GHz to 28.4GHz with 900MHz impedance bandwidth. The
radiation pattern obtained when all the ports are excited with the same
amplitude and phase is stable for the operating frequency band. With this
stability, the designed antenna can be used in beam steering applications. The
half-power beamwidth of the array is 11.1 degrees.
Author(s) Details
Priyadarshini K Desai
Departmnt of ECE, BNMIT, Bangalore, India.
Please see the book here:- https://doi.org/10.9734/bpi/rumcs/v7/425
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