Abstract
A 10 element multiple input multi output (MIMO)/Diversity antenna system is considered to work in Sub-6 GHz frequency range. The proposed design can work in long term evolution (LTE) band 42(3.4-3.6 GHz), LTE band 43(3.6-3.8 GHz) and LTE band 46(5.15-5.925 GHz). The proposed design consists of 10 identical and highly isolated T-shaped slot antennas fed with T-shaped lines. All three bands have the return loss values (<-6 dB) and total antenna efficiency (>83%) in free space. The peak value of envelope correlation coefficient is 0.06 and the calculated value of ergodic channel capacity is found to be greater than 41bps/Hz in all the bands.The effect of hand grip as well as the presence of battery and LCD screen is investigated. Simulated results are validated via fabrication and measurement of the proposed design.
Highlights
T HE need for 5G smartphones is expected to increase tremendously in the coming years as most of the countries are going towards fifth generation (5G) communication system
Ergodic channel capacity of the proposed double-T based Multiple input multiple output (MIMO) antenna array is computed by considering the antenna in independent and identically distributed Rayleigh fading environment [19] with signal to noise ratio (SNR) of 20 dB
In [25], [26] 4 × 4 MIMO antenna array is designed that will have lesser peak channel capacity values when compared to the proposed antenna
Summary
T HE need for 5G smartphones is expected to increase tremendously in the coming years as most of the countries are going towards fifth generation (5G) communication system. In fourth generation (4G) LTE (long term evolution) communications, two element MIMO antenna designs was quite popular [2] and a lot of research has been done on it. The Massive MIMO (m-MIMO) arrangement needs the integration of huge number of antennas at the base station and larger number of antennas at the user terminal This becomes one of the challenges in the realisation of 5G communication systems. M-MIMO systems can escalate the channel capacity and data throughput, adding more antenna elements in a very compact space in 5G smartphones is one difficult task. In various countries research is going on to design efficient MIMO antennas in this band. Several smartphone antennas designed at sub-6 GHz band. A 10 element MIMO design functional in sub-6 GHz band is proposed. Space is reserved for 2G/3G/4G antennas on the PCB so as to provide a smooth transition to 5G communication system
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