Planar, compact ultra‐wideband polarisation diversity antenna array

Khan, Muhammad Saeed; Capobianco, Antonio-Daniele; Naqvi, A.; Ijaz, Bilal; Asif, Sajid M.; Braaten, Benjamin D.

doi:10.1049/iet-map.2015.0371

Cited by 50 publications

(51 citation statements)

References 20 publications

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“…Disregard the mutual coupling, related on literature [6] to be less than -21 dB in a modern polarization diversity array of antennas with similar radiation pattern and ultra-wideband behavior of bow-ties.…”

Section: B Numerical Calculationmentioning

confidence: 99%

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Polarization Diversity on ESM Systems

Mello

Junqueira

2017

J. Microw. Optoelectron. Electromagn. Appl.

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Section: B Numerical Calculationmentioning

confidence: 99%

“…None of them studies most of the benefits of polarization diversity applied to ESM systems. Even those focused on ultrawideband antennas [6], that would be interesting to these military systems, do not. Besides that, many modern ESM systems are still designed with the traditional and inconvenient spiral antennas.…”

Section: Introductionmentioning

confidence: 99%

Polarization Diversity on ESM Systems

Mello

Junqueira

2017

J. Microw. Optoelectron. Electromagn. Appl.

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“…The envelope correlation coefficient (ECC) is an important constraint to analyze the diversity characteristics of a wideband MIMO antenna [21][22][23]. It is evaluated with the help of S-parameters as given in [13,21]:…”

Section: Diversity Performancementioning

confidence: 99%

A Compact Mimo/Diversity Antenna With Wlan Band-Notch Characteristics for Portable Uwb Applications

Tripathi¹,

Mohan²,

Yadav³

2017

PIER C

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Abstract-In this paper, a compact multiple-input-multiple-output (MIMO)/diversity antenna with WLAN band notch characteristics, high isolation, and good ECC suitable for portable ultra-wideband (UWB) applications is presented. The proposed antenna has optimized dimensions of 29 mm × 38 mm. The antenna consists of two orthogonal circular monopoles with a 50 Ω microstrip feed line. In addition, to enhance the impedance bandwidth, a fractal slot, created using Minkowski fractal geometry, is introduced into the ground plane, which is located on the other side of the substrate, just below the feed line. Good isolation (≥ 21.5 dB) with a fractional bandwidth up to 220% is achieved between antenna elements by introducing two ground stubs and a rectangular slot in the ground plane. A band-notch characteristic in the WLAN band is obtained by etching an elliptical split-ring resonator (ESRR) in the radiator. Moreover, a diversity performance of the antenna in terms of ECC (< 0.01) and capacity loss (< 0.3 b/s/Hz) is performed. This paper offers, for the first time, a combined effect of fractal geometry and ESRR geometry in an antenna design. Finally, a comparison of the proposed antenna is performed with the UWB MIMO/diversity antennas existing in the literature. These results show the suitability of the presented antenna for portable UWB systems.

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“…Various decoupling methods are used to reduce the power dissipation at the coupled port such as complementary split ring resonator in the ground plane, neutralizing lines, dual polarized radiator, introducing the defective ground structures and polarization diversity amongst elements . All aforementioned techniques are mostly used on two elements system.…”

Section: Introductionmentioning

confidence: 99%

Compact 3‐D eight elements UWB‐MIMO array

Khan

Rigobello

Ijaz

et al. 2018

Micro & Optical Tech Letters

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An eight elements, compact, ultra‐wideband multiple‐input‐multiple‐output (MIMO) 3‐D antenna array is reported. The proposed antenna system consists of eight monopole radiators, four elements are designed in planar configuration and four elements are placed perpendicularly to the planar configuration. Four elements are provided with a U‐shaped slot to match the input impedance over the entire bandwidth. All the monopoles are placed strategically to exploit polarization diversity which is believed to improve isolation. Good impedance matching and isolation higher than 15 dB are observed over the 3‐11 GHz frequency range. The proposed MIMO antenna array has a total size of 50 × 50 × 25 mm3 and measurements of prototype printed on a 1.524 mm thick Rogers TMM4 laminate resulted in good agreement with full wave numerical simulations. The proposed design provides high degree of isolation without compromise on compactness and also operated over wideband.

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Planar, compact ultra‐wideband polarisation diversity antenna array

Cited by 50 publications

References 20 publications

Polarization Diversity on ESM Systems

Polarization Diversity on ESM Systems

A Compact Mimo/Diversity Antenna With Wlan Band-Notch Characteristics for Portable Uwb Applications

Compact 3‐D eight elements UWB‐MIMO array

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