Multibeam by Metasurface Antennas

González‐Ovejero, David; Minatti, G.; Chattopadhyay, Goutam; Maci, S.

doi:10.1109/tap.2017.2670622

Cited by 173 publications

(99 citation statements)

References 19 publications

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“…[ 22–24 ] For instance, Maci's group explored various possibilities for designing single‐source and multi‐source feeding multi‐beam antennas by using a single metasurface aperture divided into several angular sectors or shared by a superposition of individual modulations. [ 25 ] Li et al. have exploited a combined theory of holography and leaky‐wave to realize complicated multi‐beam radiations with frequency scanning.…”

Section: Introductionmentioning

confidence: 99%

“…[22][23][24] For instance, Maci's group explored various possibilities for designing single-source and multi-source feeding multi-beam antennas by using a single metasurface aperture divided into several angular sectors or shared by a superposition of individual modulations. [25] Li et al have exploited a combined theory of holography and leaky-wave to realize complicated multi-beam radiations with frequency scanning. [26] Recently, Cui et al [27] inaugurated the land of digital metasurfaces where arranging coding meta-atoms with a specified coding pattern enables wave manipulation in a more efficient and straightforward way.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexible Manipulation of Emitting Beams Using Single‐Aperture Circularly Polarized Digital Metasurface Antennas: Multi‐Beam Radiation toward Vortex‐Beam Generation

Nadi

Rajabalipanah

Cheldavi

et al. 2020

Advcd Theory and Sims

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As the technological demands for multiple‐input multiple‐output communication systems increasingly grow, there is a critical need for the next generation of multi‐beam radiators. The concept of single‐feed compact phase‐encoded metasurface antennas is introduced, the radiation specifications of which can be flexibly manipulated to provide circularly‐polarized single‐, dual‐, quad‐beam far‐field patterns, a circularly‐polarized optical angular momentum‐carrying beam, and a circularly‐polarized quasi‐omnidirectional emission. With a small footprint area at f = 5.8 GHz, the proposed circularly polarized coding metasurface antenna (CPCMA) consists of several radiating meta‐atoms with 2‐bit excitation phases of 0, π/2, π, and 3π/2. Compared with conventional antenna arrays, the center‐to‐center distance of the coding elements is noticeably reduced, where periodic boundary conditions have been employed to analyze the inter‐element coupling effects. A low‐cost and simple corporate feed network is also designed to implement the required coding mask of each CPCMA type. To verify the performance of the proposed CPCMA, a prototype is fabricated and measured. Proof‐of‐concept experiments demonstrate excellent agreement with numerical simulations and theoretical predictions. This constructs a bridge between conventional arrays and digital metasurfaces, providing a powerful host for the next generation of multi‐beam circularly polarized radiators.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible Manipulation of Emitting Beams Using Single‐Aperture Circularly Polarized Digital Metasurface Antennas: Multi‐Beam Radiation toward Vortex‐Beam Generation

Nadi

Rajabalipanah

Cheldavi

et al. 2020

Advcd Theory and Sims

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“…However, one of the most interesting application of MTS-based structures is the realization of low-profile lightweight antennas for space applications [13][14][15][16][17][18]. By modulating the characteristic surface impedance, a transition from a cylindrical SW excited form the center to a leaky-wave (LW) is obtained using a MTS-based structure.…”

Section: Introductionmentioning

confidence: 99%

“…By modulating the characteristic surface impedance, a transition from a cylindrical SW excited form the center to a leaky-wave (LW) is obtained using a MTS-based structure. By means of the modulation of the scalar or tensor impedance characteristics of the isotropic or anisotropic surfaces, beam pointing, shape and radiated field polarization can be tailored for different applications [13][14][15][16][17][18]. Most of the configurations found in the literature work in single-mode operation.…”

Section: Introductionmentioning

confidence: 99%

Dispersion Properties of an Elliptical Patch with Cross-Shaped Aperture for Synchronized Propagation of Transverse Magnetic and Electric Surface Waves

et al. 2018

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This paper presents a novel pixel geometry for the implementation of metasurfaces requiring synchronized phase propagation of transverse magnetic (TM) and transverse electric (TE) modes. The pixel is composed by an elliptical metallic patch with an asymmetric cross-shaped aperture in the center, printed on a grounded slab. A practical implementation of a metasurface was carried out employing such a pixel geometry. Simulation results show similar frequency dispersion properties for both modes within the working frequency band, in agreement with the theoretical basis.

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“…Metasurface (MS) is a 2-D artificial array constructed by the sub-wavelength elements in periodic or aperiodic arrangements [1][2][3][4][5]. In recent years, the MS constituted by artificial magnetic conductor (AMC) [6,7] with low radar cross section (RCS) [8][9][10] has aroused great interest of researchers due to its tremendous potential in military practice.…”

Section: Introductionmentioning

confidence: 99%

Further Wideband RCS Reduction on Metasurface by Introducing a Phasor Interference Element

Han¹,

Cao²,

Gao³

2017

PIER C

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Abstract-A novel method for further wideband RCS reduction on metasurface (MS) is proposed in this paper. By introducing a phasor interference element to the original MS composed of two elements, RCS of the proposed MS constructed by three elements can be further remarkably decreased in broadband. The measurement procedure on scattering performances of samples is conducted in an anechoic chamber, in which the experimental results indicate that the proposed MS can achieve further 3-dB RCS reduction from 6.94 GHz to 15.35 GHz compared to the original MS, and the maximum further reduction reaches 24.9 dB. As a result, compared with a same-size metallic plate illuminated by a normal plane wave, RCS of the proposed MS can be reduced by more than 8.5-dB from 6.68 GHz to 15.38 GHz with the relative bandwidth of 78.9%.

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Multibeam by Metasurface Antennas

Cited by 173 publications

References 19 publications

Flexible Manipulation of Emitting Beams Using Single‐Aperture Circularly Polarized Digital Metasurface Antennas: Multi‐Beam Radiation toward Vortex‐Beam Generation

Flexible Manipulation of Emitting Beams Using Single‐Aperture Circularly Polarized Digital Metasurface Antennas: Multi‐Beam Radiation toward Vortex‐Beam Generation

Dispersion Properties of an Elliptical Patch with Cross-Shaped Aperture for Synchronized Propagation of Transverse Magnetic and Electric Surface Waves

Further Wideband RCS Reduction on Metasurface by Introducing a Phasor Interference Element

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