Wide-Angle Beam Steering Based on an Active Conformal Metasurface Lens

Li, Huan; Ma, Chao; Shen, Fazhong; Xu, Kuiwen; Ye, Dexin; Huangfu, Jiangtao; Li, Changzhi; Ran, Lixin; Denidni, Tayeb A.

doi:10.1109/access.2019.2960639

Cited by 47 publications

(34 citation statements)

References 33 publications

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“…Owing to its filtering properties, the FSS can be used as either reflector or lens at a certain frequency. The general method of obtaining a tunable FSS for beam-steering is to load active devices into its cells, such as pin diodes, [7][8][9][10] varactor diodes, [11][12][13][14][15][16][17] liquid crystals, 18,19 and ferroelectric. 20 In Reference [12], six stacked layers of a double-layer I-shaped unit-cell was proposed to obtain 360 transmission phase difference in L-band.…”

Section: Introductionmentioning

confidence: 99%

Beam‐steering transmitarray with active frequency selective surface for wireless power transmission

Kang

Yang

Liu

et al. 2021

Int J RF Mic Comp-Aid Eng

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This letter presents a beam-steering antenna with an active frequency selective surface (AFSS). The proposed AFSS-based antenna consists of a source antenna and an active frequency selective surface as a superstrate. The AFSS unit consists of three layers, where the upper and lower layers are identical and the middle layer has a slight variation. This structure makes it possible to obtain 360 phase variation, which can be achieved by changing the bias voltage at both ends of the varactor diodes in the case of three layers. Its passband is about 40 MHz (from 5.14 to 5.18 GHz). Finally, the proposed unit cell was stacked into a 5 Â 5 array; both simulated and measured results demonstrated that the transmitarray has the scan ability of ± 25 at 5.16 GHz. The proposed transmitarray is suitable for dynamic wireless power transmission.

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Section: Introductionmentioning

confidence: 99%

Beam‐steering transmitarray with active frequency selective surface for wireless power transmission

Kang

Yang

Liu

et al. 2021

Int J RF Mic Comp-Aid Eng

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“…Even though most of the metasurfaces reported to date are planar, other canonical shapes such as cylindrical metasurfaces [10]- [13] and spherical metasurfaces [14], [15] are now being studied. Applications of conformal metasurfaces include illusion transformation [13], cloaking [12], high-gain antennas [16] and so on. GSTCs-bianisotropic susceptibility tensor model had been previously used for conformal metasurfaces.…”

Section: Introductionmentioning

confidence: 99%

Application of cylindrical IE-GSTC to physical metasurfaces

Sandeep¹,

Gasiewski²,

Huang³

et al. 2021

Preprint

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<div>This work validates cylindrical IE-GSTC by applying it to physical metasurfaces, i.e. metasurfaces defined by material properties and dimensions rather than by susceptibility tensor components. Previously reported IE-GSTC which was formulated for zero thickness GSTC discontinuity is extended to handle finite thickness of physical metasurfaces. A simple analytical approach is used to extract the bianisotropic susceptibility tensor of concentric, multilayered, magneto-dielectric shell. Plane wave scattering by a physical metasurface constructed of four segments of multilayered, magneto-dielectric metasurface scatterers is used as an example problem to validate cylindrical IEGSTC. A second example considers an opening on the cylindrical metasurface, confirming IE-GSTC can handle metasurfaces with openings. Good agreement is obtained between IE-GSTC results and full wave simulation results for both cases.</div>

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“…15,16 Recently, two methods have been reported for reconfigurable beam-sweeping antennas. [17][18][19][20] One way is applying semiconductor elements on passive antennas to manipulate the radiation pattern direction. For example, by loading varactors, leaky-wave antennas could provide a wider scanning range compared to that of a conventional phased-array antenna.…”

Section: Introductionmentioning

confidence: 99%

Beam‐sweeping antenna with beamwidth reconfigurable response

Hou

Chen

Wang

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this work, a simple and compact reconfigurable antenna, whose radiation direction and beamwidth can be manipulated, is proposed based on active frequency-selective surfaces (AFSSs). This design is completed by using a monopole antenna and six reflective AFSS screens, while its reconfigurable behavior is obtained by employing semiconductor switches. By applying different biasing voltages on the diode switches, the operating state of the AFSS screens can be configurated; therefore, the radiation direction and beamwidth of the monopole antenna can be controlled. From 1.8 to 2 GHz, the omnidirectional scanning response can be achieved at xoy-plane with the step of 60 and the maximum radiant efficiency is 96%. Furthermore, the 3 dB beamwidth can also be adjusted from 176 to 120 with the measured gains of 4.58-6.53 dB.The diameter of this structure is only 50 mm, which is a relatively small structural size for an omnidirectional beam-sweeping antenna. Finally, the proposed design is validated by numerical simulations and experimental measurements.

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Wide-Angle Beam Steering Based on an Active Conformal Metasurface Lens

Cited by 47 publications

References 33 publications

Beam‐steering transmitarray with active frequency selective surface for wireless power transmission

Beam‐steering transmitarray with active frequency selective surface for wireless power transmission

Application of cylindrical IE-GSTC to physical metasurfaces

Beam‐sweeping antenna with beamwidth reconfigurable response

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