Compact 3-port orthogonally polarized mimo antennas

Abstract

Generalized non-limiting embodiments include employing a dipole antenna and / or a half slot antenna. Each of the antennas constitutes three mutually perpendicular radiating elements to achieve good isolation and low antenna signal correlation between the three ports. In one generalized non-limiting embodiment the antennas are fabricated on FR-4 epoxy boards. Experimental results show that the antennas resonate a reasonable frequency and have a desired mutual coupling. In addition experimental results for the diversity performance and the MIMO channel capacity are also provided for these antennas and these results show that the herein described antennas offer good diversity gain and the channel capacity can be increased by as much as three times by using these antennas over conventional antennas.

Description

technical field [0001] The subject disclosure generally relates to multiple-input multiple-output (MIMO) wireless communication systems. The subject disclosure particularly relates to MIMO wireless communication systems using polarization diversity. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology is a technology that uses multiple antennas to increase channel capacity without requiring additional spectrum or transmit power. In the case of multiple antennas at the transmitter and receiver, capacity gains can be achieved by exploiting spatial and polarization diversity. In practical applications, due to the limitation of the spacing of the antenna elements, polarization diversity is preferred because the antennas can be co-located. At least one study has concluded that with three orthogonal components of the electric field and three orthogonal components of the magnetic field, six independent channels can be obtained at a single point. However...

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Problems solved by technology

[0005] A problem with existing MIMO systems is the large size of the transmit and receive antenna arrays

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