Electromagnetic Band Gap (EBG) High-Q Resonator Concepts at mm-Waves

Jiménez-Sáez, Alejandro

doi:10.1007/978-3-031-04976-7_4

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…4e, where it is noticeable that the losses of the material increase with temperature. The value extracted for 120 °C is in good agreement with the result obtained by Jiménez-Sáez [33]. The increase in dielectric losses at higher temperatures corresponds to the characterization presented by Katz [23], particularly for the second cavity, due to its higher backscattered power.…”

Section: Temperature Characterizationsupporting

confidence: 89%

“…The small apperture size of the PhC's dielectric waveguide implies that the cavities present a low backscattered power, even if a rod antenna is integrated as proposed by Jiménez-Sáez [33]. For this reason, the PhC's dielectric waveguide is not matched to the air, but to a 3D-printed gradient index lens antenna.…”

Section: Flattened Lens For Enhanced Wireless Readoutmentioning

confidence: 99%

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A wireless W-band 3D-printed temperature sensor operating beyond 1000 °C

Sánchez-Pastor,

Kadĕra,

Sakaki

et al. 2023

Preprint

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In addressing high-temperature sensing (above 500 °C), there is a gap in available chipless and wireless sensor systems operating near the high end of the microwave frequency range. This study introduces a novel dielectric wireless temperature sensor, leveraging high-Q cavities within a three-dimensional photonic crystal (PhC). To increase the readout range, a flattened Luneburg lens is added on top of the PhC structure. The sensor’s operating principle is based on detecting shifts in resonance frequency due to changes in the dielectric parameters of its conforming material over temperature. The sensor is 3D-printed using Lithography-based Ceramic Manufacturing in Alumina (Al2O3). Our empirical findings reveal that the sensor’s frequency-coded response, represented by two peaks at 83.5 GHz and 85.5 GHz, is clearly distinguishable at a distance of 50 cm and up to 1200 °C, the maximum capability of our furnace. Furthermore, we draw comparisons between the sensor’s performance and existing material characterization methods, particularly in estimating Al2O3’s dielectric permittivity and losses, with the latter showing a good agreement with literature values. Due to the employed materials, the sensor is suitable for millimeter-wave applications in dynamic, cluttered high-temperature scenarios.

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Section: Temperature Characterizationsupporting

confidence: 89%

Section: Flattened Lens For Enhanced Wireless Readoutmentioning

confidence: 99%

A wireless W-band 3D-printed temperature sensor operating beyond 1000 °C

Sánchez-Pastor,

Kadĕra,

Sakaki

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

A wireless W-band 3D-printed temperature sensor based on a three-dimensional photonic crystal operating beyond 1000 ∘C

Sánchez-Pastor,

Kadĕra,

Sakaki

et al. 2024

Commun Eng

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In addressing sensing in harsh and dynamic environments, there are no available millimeter-wave chipless and wireless sensors capable of continuous operation at extremely high temperatures. Here we present a fully dielectric wireless temperature sensor capable of operating beyond 1000 ∘C. The sensor uses high-Q cavities embedded within a three-dimensional photonic crystal resonating at 83.5 GHz and 85.5 GHz, and a flattened Luneburg lens enhances its readout range. The sensor is additively manufactured using Lithography-based Ceramic Manufacturing in Alumina (Al2O3). Despite the clutter, its frequency-coded response remains detectable from outside the furnace at 50 cm and at temperatures up to 1200 ∘C. It is observed that the resonance frequencies shift with temperature. This shift is linked to a change in the dielectric properties of Al2O3, which are estimated up to 1200 ∘C and show good agreement with literature values. The sensor is thus highly suitable for millimeter-wave applications in dynamic, cluttered, and high-temperature environments.

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Electromagnetic Band Gap (EBG) High-Q Resonator Concepts at mm-Waves

Cited by 2 publications

References 38 publications

A wireless W-band 3D-printed temperature sensor operating beyond 1000 °C

A wireless W-band 3D-printed temperature sensor operating beyond 1000 °C

A wireless W-band 3D-printed temperature sensor based on a three-dimensional photonic crystal operating beyond 1000 ∘C

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