Abstract
An L-shaped dual-band multiple-input multiple-output (MIMO) rectangular dielectric resonator antenna (RDRA) for long term evolution (LTE) applications is proposed. The presented antenna can transmit and receive information independently using fundamental TE111 and higher order TE121 modes of the DRA. TE111 degenerate mode covers LTE band 2 (1.85–1.99 GHz), 3 (1.71–1.88 GHz), and 9 (1.7499–1.7849 GHz) at fr = 1.8 GHz whereas TE121 covers LTE band 7 (2.5–2.69 GHz) at fr = 2.6 GHz, respectively. An efficient design method has been used to reduce mutual coupling between ports by changing the effective permittivity values of DRA by introducing a cylindrical air-gap at an optimal position in the dielectric resonator. This air-gap along with matching strips at the corners of the dielectric resonator keeps the isolation at a value more than 17 dB at both the bands. The diversity performance has also been evaluated by calculating the envelope correlation coefficient, diversity gain, and mean effective gain of the proposed design. MIMO performance has been evaluated by measuring the throughput of the proposed MIMO antenna. Experimental results successfully validate the presented design methodology in this work.
Highlights
long term evolution (LTE) developed by third generation partnership project (3GPP) is a fourth generation (4G) wireless standard that provides 10 times the speed of 3G network [1]
The antenna performance parameters such as S-parameters, total efficiency, and radiation patterns are described; performance parameters such as S-parameters, total efficiency, and radiation patterns are described; followed by diversity and multiple-input multiple-output (MIMO) performance matrices like Envelope correlation coefficient (ECC), Mean effective gain (MEG), Diversity gain (DG), and channel capacity followed by diversity and MIMO performance matrices like ECC, MEG, DG, and channel capacity calculation
A dual-band dual-port MIMO rectangular dielectric resonator antenna (RDRA) fed by two symmetric coupling apertures is proposed
Summary
LTE developed by third generation partnership project (3GPP) is a fourth generation (4G) wireless standard that provides 10 times the speed of 3G network [1]. A dual-port MIMO design at 700 MHz for LTE Femtocell base station applications is proposed in [6] A that achieved channel capacity to 11.1 with excellent port method is given in this paper. For mobile handheld large ground sizeand andWiMAX high mutual coupling especially the higherHowever, band Another for DVB-H, Wi-Fi, is presented in [9]values using ,two dielectricatresonators. Another dual-band and bandscharacteristics [10] This design has good isolation but with large values of ground plane and DRAWLAN with MIMO reported in literature is in cylindrical form covering. This design has good isolation but with large values of ground plane and DRA height In this this paper, a MIMO rectangular DRA single radiator to operate at 1.8 and and 2.6 GHz. applications. Dedicated to to discuss results in in detail and 5 concludes thethe paper
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