High Performance and Low Energy Consumption in Phase Change Material RF Switches

Leon, Alexandre; Reig, B.; Puyal, Vincent; Perret, Etienne; Ferrari, Philippe; Podevin, Florence

doi:10.23919/eumc.2018.8541622

Cited by 8 publications

(1 citation statement)

References 8 publications

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“…GeTe (Germanium Telluride) is selected due to its advantages at high frequencies such as stability and power handling capabilities. The proposed GeTe switch technology was previously developed in [9]. Here, an optimized design is presented to be compatible with the Dband unit cell requirements.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

Phase Change Material Based Reconfigurable Transmitarray: a Feasibility Study

Gharbieh

Clemente

Milbrandt

et al. 2022

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

Self Cite

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Planar CBRAM devices using non-cleanroom techniques as RF switches

et al. 2023

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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

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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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High Performance and Low Energy Consumption in Phase Change Material RF Switches

Cited by 8 publications

References 8 publications

Phase Change Material Based Reconfigurable Transmitarray: a Feasibility Study

Phase Change Material Based Reconfigurable Transmitarray: a Feasibility Study

Planar CBRAM devices using non-cleanroom techniques as RF switches

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

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