High Diversity Gain MIMO-Antenna for UWB Application with WLAN Notch Band Characteristic Including Human Interface Devices

Saxena, Gaurav; Jain, Priyanka; Awasthi, Yogendra Kumar

doi:10.1007/s11277-019-07018-1

Cited by 26 publications

(25 citation statements)

References 24 publications

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“…Diversity gain should be close to 10dB for satisfactory operation of MIMO antenna [21]. The plot of simulated and measured Diversity gain of the designed antenna matches well and is greater than 9.995 for the whole operating frequency band, as shown in Figure12.…”

Section: Diversity Gainsupporting

confidence: 54%

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Mutual Coupling Reduction Using Ground Stub and EBG in a Compact Wideband MIMO-Antenna

et al. 2021

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Section: Diversity Gainsupporting

confidence: 54%

“…Ideally, the ECC should be 0 for an un-correlated MIMO antenna. However, the tolerable value is less than 0.5 for the actual MIMO antenna [21]. The proposed antenna has a computed ECC value of < 0.001 within its entire operating band, as displayed in Figure 12.…”

Section: Envelop Correlation Coefficientmentioning

confidence: 96%

Mutual Coupling Reduction Using Ground Stub and EBG in a Compact Wideband MIMO-Antenna

et al. 2021

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“…It is defined as the square root of the sum of all incident powers at the ports minus radiation power, divided by the sum of all incident powers at the ports. The TARC of the proposed four-element MIMO system is calculated by equation (7)–(9) [26, 27, 30]. where a i and b i are an incident and reflected EM wave, respectively, and n denotes the number of antenna elements used in the MIMO system at transmitting or receiving ends.where [ S ], [ a ], and [ b ] are scattering, incident, and reflected matrix of four-port multiband MIMO antenna, respectively.In general, TARC should be less than −10 dB for better MIMO antenna performance, and TARC of the fabricated and simulated proposed MIMO antenna is less than −40 dB in the intended bands.…”

Section: Mimo Antenna Diversity Performancementioning

confidence: 99%

“…MEG is an important parameter to investigate the diversity performance of the MIMO antenna and it gives information about how much mean power is received when input power is fed along the same route. MEG of the proposed pentaband MIMO antenna can be calculated by equation (10) [26, 27, 30]. where power gain [ G θi (Ω), G Φ i (Ω),] and density [ P Φ (Ω)] are the functions of the beam solid angle of the incident wave.…”

Section: Mimo Antenna Diversity Performancementioning

confidence: 99%

Four-element pentaband MIMO antenna for multiple wireless application including dual-band circular polarization characteristics

Saxena

Awasthi

Jain

2021

Int. J. Microw. Wireless Technol.

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In this article, a meander line-shaped pentaband (2.18–2.24, 2.38–2.46, 2.65–2.70, 3.10–3.32, 3.38–3.46 GHz) four-element multiple-input–multiple-output antenna is presented. The proposed antenna is also circularly polarized in two bands (at 2.2 and 2.4 GHz) with dual-polarization like right-handed at port 1 or 3 and left-handed at port 2 or 4, which is widely used for mobile satellite services (MSS) and Internet of Things applications. This antenna is designed and fabricated with compact size 50 × 70 × 1.6 mm3 on the FR-4 substrate with good diversity performance in pentaband. Simulated results of antenna-like return loss, isolation, and parameters-related diversity have also been tested experimentally in a controlled environment, which is within the permissible limit. The designed antenna will be appropriate for MSS, industrial scientific and medical (ISM), broadband radio services and educational broadband services, WiMAX radio location services, and amateur radio services. Meanwhile, specific absorption rate of the designed antenna has been examined in an empirical environment for the Fresnel radiating near-field applications.

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“…Therefore, the construction of a circular, fractal-shaped transmitter with a size of 60 × 100 mm 2 and an ultra-wide BW of 3.1-12.0 GHz is detailed in this paper [47]. It also includes a human interface MIMO UWB antenna operated with a BW of 3.1-11.2 GHz and dimensions of 36 × 22 × 1.6 mm 3 [48]. In addition to the works above, more studies designed UWB MIMO antennas [49][50][51].…”

Section: Introductionmentioning

confidence: 99%

A Bra Monitoring System Using a Miniaturized Wearable Ultra-Wideband MIMO Antenna for Breast Cancer Imaging

et al. 2021

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This paper represents a miniaturized, dual-polarized, multiple input–multiple output (MIMO) wearable antenna. A vertically polarized, leaf-shaped antenna and a horizontally polarized, tree-shaped antenna are designed, and the performance of each antenna is investigated. After designing the MIMO antenna, it is loaded with stubs, parasitic spiral, and shorting pins to reduce the coupling effects and remove the unwanted resonances. Afterward, the two-port MIMO cells are spaced by 2 mm and rotated by 90° to create three more cells. The antennas are designed using two layers of denim and felt substrates with dielectric constants of 1.2 and 1.8, and thicknesses of 0.5 mm and 0.9 mm, respectively, along with the ShieldIt™ conductive textile. The antenna covers a bandwidth of 4.8–30 GHz when the specific absorption rate (SAR) meets the 1 g and 10 g standards. Isolation greater than 18 dB was obtained and mutual coupling was reduced after integrating shorting pins and spiral parasitic loadings. A maximum radiation efficiency and directive gain of 96% and 5.72 dBi were obtained, respectively, with the relatively small size of 11 × 11 × 1.4 mm3 for the single element and final dimensions of 24 × 24 × 1.4 mm3 for the full assembly. The antenna’s performance was examined for both on-body (breast) and free space conditions using near-field microwave imaging. The achieved results such as high fidelity, low SAR, and accuracy in localization of the tumour indicate that the MIMO antenna is a decent candidate for breast cancer imaging.

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High Diversity Gain MIMO-Antenna for UWB Application with WLAN Notch Band Characteristic Including Human Interface Devices

Cited by 26 publications

References 24 publications

Mutual Coupling Reduction Using Ground Stub and EBG in a Compact Wideband MIMO-Antenna

Mutual Coupling Reduction Using Ground Stub and EBG in a Compact Wideband MIMO-Antenna

Four-element pentaband MIMO antenna for multiple wireless application including dual-band circular polarization characteristics

A Bra Monitoring System Using a Miniaturized Wearable Ultra-Wideband MIMO Antenna for Breast Cancer Imaging

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