Metal-Only Reflectarray Unit Cell for Dual-Polarization Control

Palomares‐Caballero, Ángel; Molero, Carlos; Padilla, Pablo; Garcia-Vigueras, María; Gillard, Raphaël

doi:10.23919/eucap53622.2022.9769306

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…It can be seen that the cross-polar component has a negligible excitation since it is below -60 dB over the considered bandwidth. The performance is similar to the unit cell presented in [27] because of the employed 3D geometry. This fact is preserved for different values of h V and for oblique incidence situations as displayed in Fig.…”

Section: Reflectarray Unit Cell: Design and Analysissupporting

confidence: 58%

Wideband 3-D-Printed Metal-Only Reflectarray for Controlling Orthogonal Linear Polarizations

Palomares‐Caballero

Molero

Padilla

et al. 2023

IEEE Trans. Antennas Propagat.

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This paper presents a metal-only reflectarray that enables the control of incident orthogonal polarizations in a large bandwidth. The proposed reflectarray is based on a unit cell whose tuning elements allow the independent control of the reflection phase value for the vertical and horizontal impinging polarizations. Due to the symmetry of the unit cell, the same performance is produced by each polarization when its reflection phase response is modified. The proposed unit cell provides a fairly linear phase response along the frequency with a phase variation in the orthogonal polarization of ±1 o . The performance under oblique incidence and the frequency limitation of the unit cell are also investigated. From this unit cell, a metal-only reflectarray that produces circular polarization from a linear polarization is designed. The reflectarray presents a simulated directivity greater than 27 dBi with an axial ratio below 1.5 dB from 32 GHz to 50 GHz (43.9% of bandwidth). A prototype is fabricated and the measured results agree well with the simulated ones. The obtained aperture efficiency is between 56% and 41% in the considered frequency band. The measured realized gain ranges from 27 dBi to 30.3 dBi where the achieved radiation efficiency is greater than 97%.

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Section: Reflectarray Unit Cell: Design and Analysissupporting

confidence: 58%

Wideband 3-D-Printed Metal-Only Reflectarray for Controlling Orthogonal Linear Polarizations

Palomares‐Caballero

Molero

Padilla

et al. 2023

IEEE Trans. Antennas Propagat.

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show abstract

“…The separation between parallel plates for this RA unit cell is also greater (s > s o ) providing a better impedance matching with free space and thus, enhancing the phase linearity along the frequency [26]. A more detailed analysis of this RA unit cell can be found in [27] where a negligible cross-polar component excitation is also demonstrated (below -60 dB). This EM feature is inherited in the following RA unit cell designs.…”

Section: Reflectarray Unit Cell: Design and Analysismentioning

confidence: 94%

Wideband 3-D-Printed Metal-only Reflectarray for Controlling Orthogonal Linear Polarizations

Palomares‐Caballero¹,

Jiménez²,

Padilla³

et al. 2023

Preprint

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<p>This paper presents a metal-only reflectarray that enables the control of incident orthogonal polarizations in a large bandwidth. The proposed reflectarray is based on a unit cell whose tuning elements allow the independent control of the reflection phase value for the vertical and horizontal impinging polarizations. Due to the symmetry of the unit cell, the same performance is produced by each polarization when its reflection phase response is modified. The proposed unit cell provides a fairly linear phase response along the frequency with a phase variation in the orthogonal polarization of ±1°. The performance under oblique incidence and the frequency limitation of the unit cell are also investigated. From this unit cell, a metal-only reflectarray that produces circular polarization from a linear polarization is designed. The reflectarray presents a simulated directivity greater than 27 dBi with an axial ratio below 1.5 dB from 32 GHz to 50 GHz (43.9% of bandwidth). A prototype is fabricated and the measured results agree well with the simulated ones. The obtained aperture efficiency is between 56% and 41% in the considered frequency band. The measured realized gain ranges from 27 dBi to 30.3 dBi where the achieved radiation efficiency is greater than 97% </p>

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Metal-Only Reflect-Transmit-Array Unit Cell with Polarization-Dependent Performance

Palomares‐Caballero

Molero

Valenzuela-Valdés

et al. 2023

2023 17th European Conference on Antennas and Propagation (EuCAP)

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Metal-Only Reflectarray Unit Cell for Dual-Polarization Control

Cited by 5 publications

References 17 publications

Wideband 3-D-Printed Metal-Only Reflectarray for Controlling Orthogonal Linear Polarizations

Wideband 3-D-Printed Metal-Only Reflectarray for Controlling Orthogonal Linear Polarizations

Wideband 3-D-Printed Metal-only Reflectarray for Controlling Orthogonal Linear Polarizations

Metal-Only Reflect-Transmit-Array Unit Cell with Polarization-Dependent Performance

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