Polarization Reconfiguration of a Millimeter-Waves Antenna using the Optical Control of Phase Change Materials

Leon-Valdes, Jehison; Huitema, Laure; Arnaud, Éric; Passerieux, Damien; Crunteanu, Aurelian

doi:10.23919/eucap48036.2020.9135811

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…[1][2][3] Traditional switches, such as PIN diodes, 4 varactors, 5 mostly work at low frequencies and exhibit poor performance in millimeter-wave band owing to the high loss and low isolation. Recently, phase change materials such as germanium telluride, 6 graphene, 7 and vanadium dioxide (VO 2 ) are becoming more and more popular.…”

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confidence: 99%

Millimeter‐wave frequency reconfigurable antenna using simple VO ₂ ‐based paired metasurface

Yang

Chen

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this article, a millimeter-wave frequency-reconfigurable metasurface antenna by electrically controlling vanadium dioxide (VO 2 ) is proposed and studied. As a phase change material, VO 2 is an insulator at room temperature but can turn into high conductivity metallic state when activated by continuous direct current (DC) voltage. By integrating the VO 2 film between two simple rectangle metasurface cells, a frequency-reconfigurable paired metasurface structure (FRPMS) is achieved. The FRPMS can be considered as one unit when VO 2 film is activated to metallic state while as two independent cells when VO 2 film is in insulating state. In this way, the FRPMS can operate, respectively at 28 and 38 GHz with independent tunability. Moreover, a coplanar and staggered DC bias circuit with little effect on radiation is designed to switch the operating modes of VO 2 easily. The antenna is fed by a stepped waveguide with ridges through a loop slot, which is suitable for dual-band feeding with large frequency ratio. One prototype is fabricated and measured for demonstration. When the VO 2 film is in metallic state, the measured working band covers from 28.5 to 29.6 GHz with the maximum gain of about 7.1 dBi. When cooled down to insulating state, the antenna can work in a higher band from 36.7 to 38.3 GHz with the maximum gain of about 7.9 dBi. Due to the advantages of simple structure, high gain and easy tuning, the antenna can be expected to use in mmW wireless communication.

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confidence: 99%

Millimeter‐wave frequency reconfigurable antenna using simple VO ₂ ‐based paired metasurface

Yang

Chen

et al. 2022

Int J RF Mic Comp-Aid Eng

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Design of a binary programmable transmitarray based on phase change material for beam steering applications in D-band

Gharbieh,

Milbrandt,

Reig

et al. 2024

Sci Rep

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This paper introduces the design of a reconfigurable transmitarray operating within the D-band frequency range (110–170 GHz). The transmitarray unit cell is composed of three metal layers and two quartz dielectric substrates. It achieves a 1-bit phase shift resolution through the alternating states of two innovative switches integrated into the active transmitting patch of the unit cell. To address the challenge of miniaturization in the D-band, compact switches compatible with the proposed unit cell dimensions are introduced. These switches are constructed using phase change materials (PCM) that change between amorphous and crystalline states when exposed to heat. The paper includes a full-wave simulation of the unit cell, demonstrating an insertion loss below 1.5 dB across a wide frequency band of 27%. Additionally, a 10 $$\times $$ × 10 elements transmitarray is synthesized using a numerical tool and its theoretical results are compared to full-wave electromagnetic simulations for validation purposes. The results indicate that by incorporating the proposed switches into the unit cell, the transmitarray achieves promising reconfiguration capabilities within the D-band. Moreover, the paper presents the architecture of a command line designed to bias the PCM switches. Notably, this command line represents a novel approach, as it enables individual biasing of each PCM switch using direct current (DC). The influence of these command lines on the transmitarray’s performance is thoroughly investigated. Although there is a compromise in the 1-dB gain bandwidth, the overall behavior of the transmitarray remains encouraging.

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Phase Change Material Based Reconfigurable Transmitarray: a Feasibility Study

Gharbieh

Clemente

Milbrandt

et al. 2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

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In this paper, we present the design of a reconfigurable transmitarray operating in the D-band (110 -170 GHz). The transmitarray unit cell has a relatively simple structure with three metal layers and two quartz dielectric substrates. The active transmitting patch of the unit cell ensures a 1-bit phase shift resolution by alternating the states of two innovative switches. Here, we overcome the small dimensions challenge in the D-band by introducing compact switches that are compatible with the dimensions of the proposed unit cell. The switches are made of phase change materials (PCM) that alternate between the amorphous and the crystalline states under the effect of heat. We present a full-wave simulation of the unit cell, which shows an insertion loss that is below 1.5 dB over a relative frequency band of 27%. Furthermore, we synthesize a 1616 elements transmitarray using an in-house MATLAB tool and compare its theoretical results to a full-wave HFSS simulation. The outcome shows that by integrating the proposed switches into the unit cell, the designed transmitarray can achieve promising reconfiguration results in the D-band.

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Polarization Reconfiguration of a Millimeter-Waves Antenna using the Optical Control of Phase Change Materials

Cited by 4 publications

References 13 publications

Millimeter‐wave frequency reconfigurable antenna using simple VO ₂ ‐based paired metasurface

Millimeter‐wave frequency reconfigurable antenna using simple VO ₂ ‐based paired metasurface

Design of a binary programmable transmitarray based on phase change material for beam steering applications in D-band

Phase Change Material Based Reconfigurable Transmitarray: a Feasibility Study

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Polarization Reconfiguration of a Millimeter-Waves Antenna using the Optical Control of Phase Change Materials

Cited by 4 publications

References 13 publications

Millimeter‐wave frequency reconfigurable antenna using simple VO 2 ‐based paired metasurface

Millimeter‐wave frequency reconfigurable antenna using simple VO 2 ‐based paired metasurface

Design of a binary programmable transmitarray based on phase change material for beam steering applications in D-band

Phase Change Material Based Reconfigurable Transmitarray: a Feasibility Study

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Product

Resources

About

Millimeter‐wave frequency reconfigurable antenna using simple VO ₂ ‐based paired metasurface

Millimeter‐wave frequency reconfigurable antenna using simple VO ₂ ‐based paired metasurface