A Decoupling Technique for Four-Element Symmetric Arrays With Reactively Loaded Dummy Elements

A decoupling technique for a symmetric four-element compact array is proposed. A dummy array terminated with optimum reactive loads is introduced to cancel the mutual couplings between the four radiating elements. A theory that leads to a general design procedure is developed. The technique is demon...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2014-08, Vol.62 (8), p.4416-4421
Main Authors: Zhao, Luyu, Wu, Ke-Li
Format: Article
Language:English
Subjects:
Admittance
Antenna arrays
Antenna decoupling
Antennas
Applied sciences
Arrays
Communication systems
compact antenna array
Decoupling
Design engineering
Dummies
Exact sciences and technology
LTE-advanced
Mathematical analysis
MIMO
multiple-input-multiple-output (MIMO)
Mutual coupling
Ports (Computers)
Power transmission lines
Radiocommunications
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
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Description
Summary:A decoupling technique for a symmetric four-element compact array is proposed. A dummy array terminated with optimum reactive loads is introduced to cancel the mutual couplings between the four radiating elements. A theory that leads to a general design procedure is developed. The technique is demonstrated by three practical design examples, including a compact and low-profile "cheese-cake" antenna array. Calculated channel capacities demonstrate that the performance of a 4-by-4 MIMO communication system that uses the cheese-cake array can be significantly improved as compared to the system using its coupled counterpart. This technique provides a promising approach to the design of a compact four-element array for a MIMO communication system.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2014.2326425