Metamaterial based circularly polarized four-port MIMO diversity antenna embedded with slow-wave structure for miniaturization and suppression of mutual coupling

Khandelwal, Mukesh Kumar

doi:10.1016/j.aeue.2020.153241

Cited by 26 publications

(7 citation statements)

References 43 publications

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“…Against these, the proposed design is dual bands, simpler due to the absence of any shorting as well as offers much higher gain than the shorted sectoral patch. Using a coupled ring resonator or metamaterial structure, CP antennas are reported [43,44]. Against these, the proposed design is simpler single patch design, offers dual band CP response and thus satisfies the requirements of frequency and polarization agile systems.…”

Section: Parametric Design Formulation For Modified ψ-Shape Msamentioning

confidence: 99%

Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Deshmukh¹,

Odhekar²

2021

PIER C

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Single patch designs of a microstrip antenna with a U-slot or a pair of rectangular slots (E-shape) provide a single band circularly polarized response, and hence they are not useful in frequency and polarization agile applications. In this paper, a modified design of a Ψ-shape microstrip antenna is proposed for dual band and dual sense circularly polarized response. Use of unequal length rectangular slots in the modified patch optimizes the inter-spacing between the modified TM 21 and TM 22 resonant modes, surface current distributions and impedance levels at them to yield dual band circularly polarized response. An impedance bandwidth of 1992 MHz (37.05%) is obtained which completely covers the axial ratio bandwidth of 11.84 and 5.67%, in the two bands with a frequency ratio of 1.3 in between them, thereby satisfying the requirements of frequency agile systems. Over the impedance and axial ratio bandwidth, the antenna exhibits nearly broadside radiation pattern with a gain of around 7 dBi. A design methodology based on the simple parametric formulation is presented, which helps in realizing a similar antenna in the specific frequency band. The proposed antenna can find applications in frequency and polarization agile systems where the signal loss due to the interference and jamming can be reduced.

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Section: Parametric Design Formulation For Modified ψ-Shape Msamentioning

confidence: 99%

Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Deshmukh¹,

Odhekar²

2021

PIER C

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“…Achievement of large bandwidth characteristics at all the ports is required for UWB‐MIMO antennas. Defected ground structure (DGS) changes the aperture of the antenna; thus, it has been proved as a very convenient technique for enhancing the bandwidth in a large amount 1–26 . DGS is also useful to obtain high isolation, 1,15,18,23 miniaturization, 2,6,11 circular polarization, 3 and multiband and wideband performance.…”

Section: Introductionmentioning

confidence: 99%

Construction of compact two‐port throne‐shaped antenna with dual stopbands and high isolation for Ultrawideband Multiple‐Input Multiple‐Output wireless communication systems

Agarwal

Dhanoa

Khandelwal

2022

Int J Communication

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Summary A throne‐shaped compact ultrawideband (UWB) two‐port multiple‐input multiple‐output (MIMO) antenna operating from 2.9 to 11.5 GHz is introduced. Dual‐band rejections are created at the center frequency of 5.5 and 7.5 GHz by embedding U‐slot on the feedline and split ring resonator (SRR) on the ground plane to eliminate interference with narrowband systems of these frequencies, respectively. Low mutual coupling of −22 dB is obtained almost throughout the full band by etching a rectangular slot in a cone‐shaped stub. Procedures for achieving the UWB band as well as two stopbands are discussed in detail. Current distribution, gain and radiation pattern for the proposed antenna are also studied. Peak gain of 2.51 dBi and radiation efficiency greater than 73% is obtained. Diversity parameters confirming the MIMO characteristics are also investigated. Experimental results are obtained through a practical model in the anechoic chamber to validate the simulations.

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“…A four-port MIMO(multi input multi output) antenna with mutual coupling was used for achieving circular polarisation. A metamaterial with slow wave characteristics is embedded in the proposed antenna to refine the electromagnetic characteristics 21 . A Vivaldi antenna in the THz spectrum with high gain and directivity was designed for medical sensing with reconfigurable characteristics.…”

Section: Introductionmentioning

confidence: 99%

Parallel LC shaped metamaterial resonator for C and X band satellite applications with wider bandwidth

Faruque

Siddiky

Ahamed

et al. 2021

Sci Rep

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The electromagnetic properties of the metal based dielectric in the field of millimeter and sub-millimeter technology attracts a new era for innovation. In this research work, we have introduced a parallel LC shaped metamaterial resonator with wider bandwidth. The negative refractive index for two resonant frequencies is located from the negative permittivity from 5.1 to 6.3, 10.4 to 12.9 GHz, where the negative refractive index is located from 5.4 to 6.3 and 10.5 to 13.5 GHz. The electromagnetic wave polarizing in the proposed structure with parallel LC shaped metallic structure shows a fascinating response of wider bandwidth for the external electric and magnetic field. This paper focuses on the design of conducting layer for the suggested design with the parallel metallic arm for analysing the mutual coupling effect of the scattering response where the sub-branch in metallic design is shown more resonant frequencies with the enhancement of the compactness. This proposed structure is analysed with different metallic arrangements and array structures for different boundary conditions.

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Metamaterial based circularly polarized four-port MIMO diversity antenna embedded with slow-wave structure for miniaturization and suppression of mutual coupling

Cited by 26 publications

References 43 publications

Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Construction of compact two‐port throne‐shaped antenna with dual stopbands and high isolation for Ultrawideband Multiple‐Input Multiple‐Output wireless communication systems

Parallel LC shaped metamaterial resonator for C and X band satellite applications with wider bandwidth

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