Compact Dual-Band Mimo Antenna With High Port Isolation for Wlan Applications

A compact four and eight elements multiple-input-multiple-output (MIMO) antenna designed for WLAN applications is presented in this article. The antenna operates in IEEE 802.11b/g WLAN (2.4 GHz), IEEE 802.11 ac/n WLAN (5.2 and 5.8 GHz) and WiMAX (5.8 GHz) bands. The resonated mode of the antenna is achieved by two unequal Reverse-L shaped, line-shaped slots on top and parasitic element on the ground layer. The single antenna provides wide bandwidth of about 29% (2.3-3.1 GHz) in lower and 22% (4.9-6.1 GHz) in the upper band. The compactness of the single element antenna is found about 95% with respect to the patch and 61% in overall dimension. Thereafter an investigation is carried out to design two, four, and eight elements MIMO antennas. All of the multi-element structures provide compact configuration and cover entire WLAN frequency ranges . The dimension of the proposed eight element MIMO antenna is 102 × 52 × 1.6 mm 3 . It covers the frequency (measured) from 2.4 to 3.1 GHz and 5 to 6.1 GHz. The diversity performance of the proposed MIMO antenna is also assessed in terms of the envelope correlation coefficient (ECC), diversity gain (DG), and total active reflection co-efficient (TARC). The ECC is found <0.5 whereas the DG >9.0 is obtained for the desired bands. K E Y W O R D S broadband antenna, compact antenna, dual band MIMO, eight element MIMO, four element MIMO

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“…Two element MIMO antenna structure are presented in Refs. . These antennas cover the single and double band frequency spectra.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. , a two element dual band MIMO antenna covering the frequency spectra of WLAN 2.4/5.2 GHz, has overall dimension of 38 × 43 × 1.6 mm 3 . In Ref.…”

Section: Introductionmentioning

confidence: 99%

Compact dual wide‐band four/eight elements MIMO antenna for WLAN applications

Roy

Ghosh

Chakarborty

2019

Int J RF Microw Comput Aided Eng

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“…While most of the works on improving the isolation between two antennas focus on single operating band, modern wireless communication systems have evolved to support multiband operation. Dual‐band dual‐element MIMO antenna system incorporating decoupling structures have been proposed …”

Section: Introductionmentioning

confidence: 99%

A compact dual-band 2 × 1 metamaterial inspired mimo antenna system with high port isolation for LTE and WiMax applications

Panda

Sahu

Mishra

2017

Int J RF Microw Comput Aided Eng

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This article proposes a compact (43 × 26 × 0.8 mm3) dual‐band two‐element metamaterial‐inspired MIMO antenna system with high port isolation for LTE and WiMAX applications. In this structure, each antenna element consists of a square–ring slot radiator encircling a complementary split ring resonator. A tapered impedance transformer line feeds these radiating apertures and shows good impedance matching. A 2 × 3 array of two‐turn Complementary Spiral Resonator structure between the two antenna elements provides high dual‐band isolation between them. The fabricated prototype system shows two bands 2.34 – 2.47 GHz (suitable for LTE 2300) and 3.35 – 3.64 GHz (suitable for WiMAX). For spacing between two antennas of 10 mm only, the measured isolation between the two antenna elements in the lower band is around −32 dB while that in the upper band is nearly 18 dB. The system shows a doughnut‐shaped radiation patterns. The peak measured antenna gains for the proposed MIMO system in the lower and higher bands are 3.9 and 4.2 dBi, respectively. The MIMO system figure of merits such as the envelope correlation coefficient, total efficiency are also calculated and shown to provide good diversity performance.

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“…Increased spacing between the ports to reduce mutual coupling will increase the size of the MIMO antenna. Use of effective isolation techniques to reduce the mutual coupling has been published in open literature including an isolation element separating two identical folded antenna modules (Chen et al 2012), use of a slotted complementary split ring resonator (CSRR) between the antennas inserted in the ground plane (Yang et al 2014), T-shaped junction on the top surface of the substrate and etching slots in the ground plane (Qin and Liu 2014), neutralization line (See et al 2012), slits etched in the ground plane (Li et al 2011;Cui et al 2011), inverted-L-shaped ground plane (Xiong and Gao 2012;Ding et al 2007). Table 1 gives the comparison of the sizes of various multiband papers.…”

mentioning

confidence: 99%