Mutual Coupling Reduction of Two 2x1 Triangular-Patch Antenna Array Using a Single Neutralization Line for MIMO Applications
In this paper, a novel structure of two interlaced antenna arrays for MIMO applications is presented. It consists of two 2x1 triangular patch array antennas, which have all elements separated by a short distance among them (0.22λ0), where mutual coupling can be very poor (S21 = –7.81 dB). To overcome such weakness, a simple and efficient method is used: one neutralization line (NL) is introduced to increase the decoupling between both ports, reaching up to –29 dB at the central frequency, and below –20 dB over a large bandwidth. The whole MIMO antenna array has dimensions of 1.56λ0 × 0.3λ0 and has a gain of 9.11 dBi. Its diversity parameters describe it as a useful radiator for MIMO communications systems.
KeywordsLinear antenna arrays, microstrip antennas, mutual coupling, neutralization line, patch antennas
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2018 vol. 27, č. 4, s. 976-982. ISSN 1210-2512
- 2018/4