Dual-Polarized High-Gain Microstrip Antenna for MIMO Wireless Communication Systems

In this study, we proposed an indoor broadband dual-polarized 2 × 2 MIMO (multiple-input and multiple-output) antenna having dimensions of 240 mm × 200 mm × 40 mm, for application in 5G wireless communication systems. The proposed antenna comprised two vertically polarized circular monopole antennas (CMAs), two horizontally polarized modified rectangular dipole antennas (MRDAs), and a ground plane. The distance between the two MRDAs (MRDA1 and MRDA2) was 70.5 mm and 109.5 mm in the horizontal (x-direction) and 109.5 mm vertical (y-direction) directions, respectively. Conversely, the distance between the two CMAs (CMA1 and CMA2) was 109.5 mm and 70.5 mm in the horizontal (x-direction) and vertical (y-direction) directions, respectively. While the CMAs achieved broadband characteristics owing to the optimal gap between the dielectric and the driven radiator using a parasitic element, the MRDAs achieved broadband owing to the optimal distance between the dipole antennas. The observations in this experiment confirmed that the proposed could operate in the 5G NR n46 (5.15–5.925 GHz), n47 (5.855–5.925 GHz), n77 (3.3–4.2 GHz), n78 (3.3–3.8 GHz), and the n79 (4.4–5 GHz) bands. Moreover, it exhibited a wide impedance bandwidth (dB magnitude of ) of 101% in the 2.3–7 GHz frequency range, high isolation (dB magnitude of ), low envelope coefficient correlation (ECC), gain of over 5 dB, and average radiation efficiency of 87.19%, which verified its suitability for application in sub-6 GHz 5G wireless communication systems.

Download Full-text

Integration Study, Analysis and Design of a Flexible Antenna in OLED Light for WiMAX Wireless Communication Systems

10.20944/preprints202011.0070.v1 ◽

2020 ◽

Author(s):

Soukaina Sekkal ◽

Laurent Canale ◽

Mariam El Gharbi ◽

Adel Asselman

Keyword(s):

Wireless Communication ◽

Patch Antenna ◽

Communication Systems ◽

High Gain ◽

Wireless Communication Systems ◽

Light Sources ◽

Study Analysis ◽

Analysis And Design ◽

Flexible Antennas ◽

Flexible Antenna

In this work, a new flexible antenna integrated with OLED light sources is presented for WiMAX wireless communication systems. The proposed antenna was placed on a 100% polyester base with a thickness of 1.5 mm and achieved a high gain. We evaluated and tested its performance, including reflection coefficient, radiation pattern and gain. The flexible and simple patch antenna has been designed to operate at 3.5 GHz for WiMAX wireless communication systems with a gain value of 5.38 dB. This article proves the applicability of the proposed material for the integration of flexible antennas in OLEDs while maintaining gain performance similar to conventional flat antennas.

Download Full-text

Sub-THz Antenna for High-Speed Wireless Communication Systems

International Journal of Antennas and Propagation ◽

10.1155/2019/9573647 ◽

2019 ◽

Vol 2019 ◽

pp. 1-9 ◽

Cited By ~ 6

Author(s):

Hamsakutty Vettikalladi ◽

Waleed Tariq Sethi ◽

Ahmad Fauzi Bin Abas ◽

Wonsuk Ko ◽

Majeed A. Alkanhal ◽

...

Keyword(s):

Wireless Communication ◽

Communication Systems ◽

High Speed ◽

High Gain ◽

Wireless Communication Systems ◽

Impedance Bandwidth ◽

Single Element ◽

Compact Structure ◽

Good Efficiency ◽

High Data

Terahertz (THz) links will play a major role in high data rate communication over a distance of few meters. In order to achieve this task, antenna designs with high gain and wideband characteristics will spearhead these links. In this contribution, we present different antenna designs that offer characteristics better suited to THz communication over short distances. Firstly, a single-element antenna having a dipole and reflector is designed to operate at 300 GHz, which is considered as a sub-terahertz band. That antenna achieves a wide impedance bandwidth of 38.6% from 294 GHz to 410 GHz with a gain of 5.14 dBi. Secondly, two designs based on the same dipole structure but with added directors are introduced to increase the gain while maintaining almost the same bandwidth. The gains achieved are 8.01 dBi and 9.6 dBi, respectively. Finally, an array of 1×4 elements is used to achieve the highest possible gain of 13.6 dBi with good efficiency about 89% and with limited director elements for a planar compact structure to state-of-the-art literature. All the results achieved make the proposed designs viable candidates for high-speed and short-distance wireless communication systems.

Download Full-text