A Novel Isolation Improvement Technique for Wideband MIMO Antenna Systems

ul Haq, Muhammad Aziz1; Koziel, Slawomir1; Cheng, Qingsha S.2

2019

2164-3342

978-1-5386-8127-5

2019 13TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)

1-4

31 March-5 April 2019

Krakow, Poland

345 E 47TH ST, NEW YORK, NY 10017 USA

IEEE

In this paper, a novel technique for improving element isolation in wideband multiple-input-multiple-output (MIMO) antennas in a parallel configuration is presented. Our methodology is based on ground plane alterations, in particular, introduction of an n-section rectangular slit below the feed line combined with a multi-stage EM-based adjustment of antenna geometry. The technique is demonstrated using a representative set of four wideband MIMO antennas with an intention to analyse the relevance of the approach for various radiator geometries. To maintain a compact antenna size while ensuring acceptable electrical performance, rigorous EM-driven optimization is carried out involving all antenna geometry parameters. The numerical results indicate a clear advantage (in terms of isolation improvement) of increasing the number of the slit sections but also a saturation effect beyond n = 2. The antenna optimization process aims at satisfying two performance specifications: reflection vertical bar S-11 vertical bar <= -10 dB, and isolation vertical bar S-21 vertical bar <= -20 dB, both within the entire operational bandwidth. Other important figures obtained for the optimized designs, such as Envelop Coefficient Correlation (ECC < 0.005), diversity gain (DG > 9.99 dB), and total efficiency approximately > 80%, confirm suitability of the proposed technique in the context high-performance compact MIMO antenna design.

wideband antennas compact antennas size reduction EM-driven design ground plane modifications

其他

英语

CPCI-S ; EI

National Natural Science Foundation of China[61471258]

Engineering ; Telecommunications

Engineering, Electrical & Electronic ; Telecommunications

WOS:000480384701019

20192807162406

Antenna grounds ; Broadband networks ; Geometry ; MIMO systems ; Slot antennas

Mathematics:921

Web of Science

1.Reykjavik Univ, Engn Optimizat & Modeling Ctr, IS-101 Reykjavik, Iceland
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen, Peoples R China

ul Haq, Muhammad Aziz,Koziel, Slawomir,Cheng, Qingsha S.. A Novel Isolation Improvement Technique for Wideband MIMO Antenna Systems[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2019:1-4.