Designing and Measurement of a Single Layered Planar Gain-Enhanced Antenna Radome with Metamaterials

Zheng, Kuisong; Li, N.-J.; Ren, Ankang; Wei, Gao; Jia-dong, XU

doi:10.1163/156939312800030668

Cited by 6 publications

(5 citation statements)

References 13 publications

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“…Frequency Selective Surfaces (FSSs) as spatial filters have proven to be significantly useful for various applications, such as, antenna radomes, prefiltering stages of filtenna designs, reflecting antennas, and polarization converters. [1][2][3][4][5] FSSs have also been widely used in shielding structures and absorbers. 6,7 The electrical response of FSS depend on the physical parameters and can be calculated using Equivalent circuit model (ECM), simulators and surrogate models.…”

Section: Introductionmentioning

confidence: 99%

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An efficient application of machine learning for designing user specific transmissive radome

Singh

Jain

Narang

et al. 2023

Micro & Optical Tech Letters

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Frequency selective surfaces (FSSs) are widely used for transmissive and absorptive radomes in various frequency ranges. Lack of scientific formulation makes it challenging to determine the dimensions of the FSS radomes corresponding to user specific applications. Therefore, we have proposed a novel methology using machine learning technique for determining the physical parameters of FSS by which the challenge faced due to trial and error technique may be minimised. Simulated data set has been used to train the neural network model producing 8.5 million combinations of physical parameters and their electric responses. These combinations are arranged as look‐up table and optimized physical parameters are obtained using error minimization. The methodology has been implemented on a square loop geometry and validated using high frequency structure simulator. A prototype has been fabricated and measured in free space setup. The measured results are in good agreement with the obtained simulated results.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An efficient application of machine learning for designing user specific transmissive radome

Singh

Jain

Narang

et al. 2023

Micro & Optical Tech Letters

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“…A different types of artificial magnetic conductor has been used to design radome as-partially reflecting surfaces, or frequency selective surfaces. Metamaterial-based radomes can be great addition to microstrip antennas due to the unusual electromagnetic properties that they are able to provide [6][7], Metamaterial attains exotic electromagnetic property over certain frequency band, which is abnormal in nature. It can show totally opposite characteristics compared to natural materials in terms of negative permittivity or permeability [8], An axial symmetrical CRLH circular patch antenna was proposed to support the zeroth order mode metamaterial [9], MNZ or MNG metamaterial in the central part of circular patch would increase the resonant frequency of mode TM11 while keeping the frequency of mode TM21 unchanged, and there would be increment of bandwidth by enlarged if they are so close to connect two band together [10], A compact low-profile dual-band patch antenna in which designed by inserting an array of the TL-MTM unit cell into the conventional microstrip patch.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth and gain enhancement of a circular microstrip antenna using a DNG split ring resonator radome

et al. 2019

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This paper present the design of a circular patch microstrip antenna with enhancement in terms of bandwidth and gain using a dielectric double negative (DNG) split ring metamaterial radome. This radome is positioned on top of the CP antenna operating from 5.2 GHz to 6.4 GHz. The metamaterial radome comprises of two alternate split rings of negative permittivity, permeability and refractive index. The circular microstrip antenna bandwidth of 430 MHz has been realized by the presence of DNG metamaterial radome compared to 220 MHz without the radome. The gain has been increased as well from 1.84 dBi to 3.87 dBi.

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“…By optimizing the structure parameters of the radome [15], the transmission coefficient of the plane radome is close to 1, and the degradation is almost invisible. Another metamaterial radome which has a planar centrosymmetric honeycomb-shaped structure can obtain a higher gain about 2.5 dB before the use of this metamaterial radome [16].…”

Section: Introductionmentioning

confidence: 99%

Phase Compensation of Composite Material Radomes Based on the Radiation Pattern

et al. 2017

Chin. J. Mech. Eng.

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Some compensation methods have been proposed to mitigate the degradation of radiation characteristics caused by composite material radomes, however most of them are complex and not applicable for large radomes, for example, the modification of geometric shape by grinding process. A novel and simple compensation strategy based on phase modification is proposed for large reflector antenna-radome systems. Through moving the feed or sub-reflector along axial direction opportunely, the modification of phase distribution in the original aperture of an enclosed reflector antenna can be used to reduce the phase shift caused by composite material radomes. The distortion of far-field pattern can be minimized. The modification formulas are proposed, and the limitation of their application is also discussed. Numerical simulations for a one-piece composite materials sandwich radome and a 40 m multipartite composite materials sandwich radome verify that the novel compensation strategy achieves satisfactory compensated results, and improves the distortion of the far-field pattern for the composite material radomes. For one-piece dielectric radome, more than 60% phase difference caused by radome is reduced. For multipartite radome, the sidelobe level improves about 1.2 dB, the nulling depth improves about 3 dB. The improvement of far-field pattern could be obtained effectively and simply by moving the feed or sub-reflector according to phase shift of the radome.

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Designing and Measurement of a Single Layered Planar Gain-Enhanced Antenna Radome with Metamaterials

Cited by 6 publications

References 13 publications

An efficient application of machine learning for designing user specific transmissive radome

An efficient application of machine learning for designing user specific transmissive radome

Bandwidth and gain enhancement of a circular microstrip antenna using a DNG split ring resonator radome

Phase Compensation of Composite Material Radomes Based on the Radiation Pattern

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