High isolation two‐port compact MIMO fractal antenna with Wi‐Max and X‐band suppression characteristics

Mohanty, Asutosh; Sahu, Sudhakar

doi:10.1002/mmce.22021

Cited by 33 publications

(28 citation statements)

References 29 publications

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“…To compute MIMO diversity parameters, envelope channel coefficient (ECC) is estimated from 3D complex far-field patterns collectively evaluated for Port-1, Port-2, and Port-3 captured field magnitudes for the best accuracy, considering an isotropic channel environment [23,24]. From the ECC results, diversity gains [27] at each antenna ports is determined as: DG = 1 − ρ e 2 (where, ρ e is the ECC at Port-1, Port-2, and Port-3). Since 3-port MIMO antenna assists far-field pattern diversity due to large differentiation in radiative patterns at each ports shown in Figure 23(a), the correlation factor between antenna elements is very low as observed from Figure 23(b).…”

Section: Resultsmentioning

confidence: 99%

Design of a 3-Port Compact Mimo Antenna Based on Characteristics Mode Analysis Approach

Mohanty¹,

Behera²

2021

PIER C

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In this paper, a 3-port compact MIMO antenna is designed using Characteristics Mode Analysis (CMA). It consists of three antenna elements. Ant-1 is 45 • tilted, and Ant-2 and Ant-3 have L-bend transitions. Ant-2 is 1/4th, and Ant-3 is 1/2 in size w.r.t. Ant-1. To improve 10-dB impedance bandwidth and isolation > 17 dB, fractal slot is etched at bottom, and deformity in antenna structures has three distinct modes. Ant-1 operates in UWB mode from (4.8-10.6) GHz with 75.32% IBW, and Ant-2 and Ant-3 operate in wide-band mode from (8.1-10.8) GHz with 28.57% IBW and from (7.2-9.8) GHz with 30.58% IBW. CMA is utilized to investigate the anonymous behaviour of antenna, predicts modal significance (MS), characteristics angle (CA), and eigen values (EV). From these parameters, bandwidth potential, radiation energy source, and Q-factor are estimated. For investigations, first six modes are swept in modal navigator, where dominant modes are traced as ideal antenna resonant modes, and unwanted modes are neglected. The antenna gain is (3-7) dBi with ECC < 0.08. The proposed antenna is fabricated and measured for validation. From the outcomes, it is found suitable for UWB, air traffic, and defense tracking, meteorological, amateur satellite, maritime vessel traffic controlling, and X-band satellite applications.

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Section: Resultsmentioning

confidence: 99%

Design of a 3-Port Compact Mimo Antenna Based on Characteristics Mode Analysis Approach

Mohanty¹,

Behera²

2021

PIER C

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“…The vector network analyzer has also been used to test this MIMO antenna. The measurement setup for the MIMO antenna is also shown which is same as carried out in 31 . Figure 6 characterizes the simulated and measured S‐parameters.…”

Section: Performance Of the Antenna With Outcomes And Discussionmentioning

confidence: 99%

Investigation and design of enhanced decoupled UWB MIMO antenna for wearable applications

Dey

Pattanayak

Mitra

et al. 2020

Micro & Optical Tech Letters

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A lightweight multi‐input multi‐output (MIMO) two‐element wearable ultra‐wideband (UWB) antenna having a port isolation of greater than 21 dB is introduced in this communication. The proposed structure includes wearable jeans cloth as a substrate, wherein two inverted u‐formed stubs are mounted in the middle position located on the backside of antenna and attached to the partially etched ground for enhancing the characteristics of port isolation. The developed UWB MIMO antenna has a size of 50 x 35 mm2 and covers the frequency range operating from 1.83 to 13.82 GHz (~153.2%). The suggested MIMO antenna is inexpensive and functions across a broad frequency range of applications including WLAN (2.4‐2.484 GHz/5.15‐5.35 GHz/5.72‐5.825 GHz), Downlink‐uplink WiMAX (3.2‐3.85 GHz), and C‐band (3.7‐4.2 GHz/5.925‐6.425 GHz). The diversity gain (DG) is found to be greater than 9.9 along with envelope correlation coefficient (ECC) to be less than 0.059 across the entire operating bandwidth. The proposed MIMO antenna's channel power loss is bestowed to be less than 0.35 bit/s/Hz. The SAR results of the proposed UWB MIMO design admits that the antenna performs satisfactorily and is suitable for wearable applications. Simulation and testing fairly proved the output of the proposed antenna as a righteous candidate applicable for UWB MIMO applications.

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“…The supplementary network to the cascaded antenna ports are provided in due considering assumptions of free‐space coupling process due to MS. All circuit parameters with values are depicted in Table 3. The circuit design topology and parameters extraction is determined from 31,32 . Figure 20A shows the scattering parameters (S11, S22 and S33) and Figure 20B shows the transmission parameters (S12, S23 and S13) of equivalent circuit model.…”

Section: Equivalent Conceptualized Tri‐port Antenna Circuit Modelmentioning

confidence: 99%

Hybrid metasurface loaded tri‐port compact antenna with gain enhancement and pattern diversity

Mohanty

Behera

Nasimuddin

2021

Int J RF Microw Comput Aided Eng

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A tri‐port compact antenna loaded on hybrid metasurface (MS) with gain enhancement and pattern diversity is proposed in this article. The antenna consists of three analytically designed contorted radiators (Ant‐1, Ant‐2, and Ant‐3). A koch‐fed fractal aperture ground plane is used to improve impedance matching and port isolation, thus eliminating supplementary decoupling networks. Ant‐1 is 45° tilted, operating in wideband mode. Ant‐2 is one‐fourth, Ant‐3 is one‐half in electrical lengths with L‐shaped metallic contortions to achieve good matching characteristics and asserts pattern diversity. A hybrid MS (combination of conventional customized MS's) structure is loaded for gain enhancement of ≈ 8.93 dBi. Ant‐1 operates at (4.97‐10.63) GHz with 72.56% frequency bandwidth (FBW), Ant‐2 operates at (8.5‐10.4) GHz with 20.1% (FBW) and Ant‐3 operates at (7.2‐9.6) GHz with 28.57% (FBW). The differentiation in antenna electrical size assists compactness, reduction in mutual coupling (>17 dB), has uncorrelated radiation patterns at each port delivering far‐field diversity with low ECC < 0.1. A prototype antenna of size 28.6 mm × 28.6 mm is fabricated and experimented, which are in good agreements with EM simulation and equivalent circuit model response. The proposed tri‐port antenna can be a promising candidate for MIMO diversity applications.

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High isolation two‐port compact MIMO fractal antenna with Wi‐Max and X‐band suppression characteristics

Cited by 33 publications

References 29 publications

Design of a 3-Port Compact Mimo Antenna Based on Characteristics Mode Analysis Approach

Design of a 3-Port Compact Mimo Antenna Based on Characteristics Mode Analysis Approach

Investigation and design of enhanced decoupled UWB MIMO antenna for wearable applications

Hybrid metasurface loaded tri‐port compact antenna with gain enhancement and pattern diversity

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