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http://dx.doi.org/10.4218/etrij.2017-0128

Estimation of Antenna Correlation Coefficient of N-Port Lossy MIMO Array  

Saputro, Susilo Ady (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
Nandiwardhana, Satya (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
Chung, Jae-Young (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
Publication Information
ETRI Journal / v.40, no.3, 2018 , pp. 303-308 More about this Journal
Abstract
This paper proposes a simple yet accurate method for estimating the antenna correlation coefficient (ACC) of a high-order multiple-input multiple-output (MIMO) antenna. The conventional method employed to obtain the ACC from three-dimensional radiation patterns is costly and difficult to measure. An alternate method is to use the S-parameters, which can be easily measured using a network analyzer. However, this method assumes that the antennas are highly efficient, and it is therefore not suitable for lossy MIMO antenna arrays. To overcome this limitation, we define and utilize the non-coupled radiation efficiency in the S-parameter-based ACC formula. The accuracy of the proposed method is verified by the simulation results of a 4-port highly coupled lossy MIMO array. Further, the proposed method can be applied to N-port arrays by expanding the calculation matrix.
Keywords
Antenna correlation coefficient (ACC); Antenna impedance; Embedded radiation efficiency; MIMO antenna; Non-coupled radiation efficiency; Scattering parameter;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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