A Multilayered Metamaterial-Inspired Miniaturized Dynamically Tunable Antenna

Myers, Joshua C.; Chahal, Premjeet; Rothwell, Edward J.; Kempel, Leo C.

doi:10.1109/tap.2015.2398124

Cited by 17 publications

(6 citation statements)

References 19 publications

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“…In recent years, the most recent technology in how to adjust the geometry based on a known geometry to achieve the required specifications and best design which requires more experience through a trial and error process has been developed, on the other hand, the ability to develop highly nonintuitive solutions that would be difficult to achieve using traditional methods, many algorithms have recently been utilized in antenna design, [1][2][3][4][5][6][7] and it is a successful method of antenna optimization that meets all requirements, and fully automated design procedures, for example, geometric dimensions, are based on predefined design criteria. 8,9 Evolutionary methods, such as the evolution algorithm, have found widespread application in fields ranging from engineering, economics to artificial intelligence, [10][11][12] furthermore, Increasing computational power will strengthen the role of numerical approaches in solving complex problems in the near future. Differential evolution algorithm is a combination between evolutionary optimization variant and genetic algorithm, recently applied in antenna problems, 13,14 its main idea is to use individual differences to generate temporary individuals within populations; than the population evolution restructure randomly.…”

Section: Introductionmentioning

confidence: 99%

Design of miniaturized tri‐band antenna based on differential evolution algorithm

Fertas

Denidni

et al. 2022

Micro & Optical Tech Letters

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A novel highly miniaturized triple band structure based on Z-slots-shaped antenna is presented in this letter, with only 0.0015 λ 0 2 footprint, where λ 0 is the free space wavelength at 1.3 GHz. The proposed design can generates three resonant frequency bands (1.3-1.62 GHz), (2.22-2.59 GHz), and (3.24-3.65 GHz) with −10 dB reflection coefficient, a triple band function is achieved by etching tow connected Z-shaped-slots in the radiating element and the differential evolution algorithm is then used to control the currents

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Section: Introductionmentioning

confidence: 99%

Design of miniaturized tri‐band antenna based on differential evolution algorithm

Fertas

Denidni

et al. 2022

Micro & Optical Tech Letters

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“…Today, the demand for designing multiband antennas with a low cost and minimal weight has become highly essential due to the presence of multiple communication standards. Today, antenna performance has been significantly improved using metamaterial, which offers improved size miniaturization, gain, bandwidth, as well as decreased cost [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Metamaterial Cell-Based Superstrate towards Bandwidth and Gain Enhancement of Quad-Band CPW-Fed Antenna for Wireless Applications

Al‐Bawri

Islam

Wong

et al. 2020

Sensors

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A multiband coplanar waveguide (CPW)-fed antenna loaded with metamaterial unit cell for GSM900, WLAN, LTE-A, and 5G Wi-Fi applications is presented in this paper. The proposed metamaterial structure is a combination of various symmetric split-ring resonators (SSRR) and its characteristics were investigated for two major axes directions at (x and y-axis) wave propagation through the material. For x-axis wave propagation, it indicates a wide range of negative refractive index in the frequency span of 2–8.5 GHz. For y-axis wave propagation, it shows more than 2 GHz bandwidth of near-zero refractive index (NZRI) property. Two categories of the proposed metamaterial plane were applied to enhance the bandwidth and gain. The measured reflection coefficient (S11) demonstrated significant bandwidths increase at the upper bands by 4.92–6.49 GHz and 3.251–4.324 GHz, considered as a rise of 71.4% and 168%, respectively, against the proposed antenna without using metamaterial. Besides being high bandwidth achieving, the proposed antenna radiates bi-directionally with 95% as the maximum radiation efficiency. Moreover, the maximum measured gain reaches 6.74 dBi by a 92.57% improvement compared with the antenna without using metamaterial. The simulation and measurement results of the proposed antenna show good agreement.

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“…Recently, pixel surfaces have already demonstrated its reconfigurable ability when used as the parasitic structures of the antenna, leading to significant advantages in the switch biasing, power handling, and integration possibilities [6,[24][25][26]. Nevertheless, the parasitic pixel layer is employed to realize single reconfiguration, without any further exploration in compound reconfigurable performance.…”

Section: Introductionmentioning

confidence: 99%

A Novel Linear Sparse Array with Reconfigurable Pixel Antenna Elements

Wei²,

Zhao

et al. 2020

International Journal of Antennas and Propagation

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In this paper, on the basis of multifunctional reconfigurable pixel antenna (RPA) elements, a novel linear sparse array with an attractive compound reconfigurability is presented. It has the potential advantages of its beam scanning with low gain fluctuation, low sidelobe in two orthogonal planes, and polarization reconfigurable performance. Specifically, an RPA with simultaneous polarization and pattern reconstruction capabilities, consisting of the driven patch and the parasitic pixels on the same layer of dielectric substrate, is firstly designed, which can work in several operation modes corresponding to steerable beam directions (θ � 0°; θxoz � 25°, 45°; θyoz � 15°) with two circular polarizations in X-band. Cross-slot coupling feed is used to improve polarization reconstruction capability and reduce the complexity of hybrid reconstruction topology optimization. en, those RPAs are integrated into the 1 × 8 linear sparse array to realize the reconfiguration of two circular polarizations and beam steering in xoz-and yoz-plane. Simulation results show that the gain fluctuation and sidelobe level of the array during beam scanning have significant advantages over the previous phased array, and the generation of antenna grating lobes is avoided. Moreover, both RPA element and RPA array prototypes have been fabricated and measured to testify the efficiency. e measured results agree well with the simulated ones, which indicates the application potential in the field of modern wireless communication system of the proposed linear sparse array.

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A Multilayered Metamaterial-Inspired Miniaturized Dynamically Tunable Antenna

Cited by 17 publications

References 19 publications

Design of miniaturized tri‐band antenna based on differential evolution algorithm

Design of miniaturized tri‐band antenna based on differential evolution algorithm

Metamaterial Cell-Based Superstrate towards Bandwidth and Gain Enhancement of Quad-Band CPW-Fed Antenna for Wireless Applications

A Novel Linear Sparse Array with Reconfigurable Pixel Antenna Elements

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