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Mm-wave photonic-enabled antenna arrays

Abstract : We present antenna arrays excited by photodiodes for the continuous-wave generation of millimeter-wave radiation using photomixing. Research efforts carried out over the last twenty years have put the photonic generation approach into the spotlight. It offers numerous advantages concerning other methods, and the principal example is seamless compatibility with fiber-optic networks. Nevertheless, photomixing offers a lower emitted power than other technologies. Furthermore, photonic-enabled high-gain and beam-steerable antennas are still a critical point for telecommunications. This work addresses both of the previous drawbacks. First, we propose a method to increase the emitted power using an antenna array integrated with photodiode sources. A ground plane placed close to the antennas enables a more efficient impedance matching, while the array configuration offers power combining. Besides, we have designed and prototyped two antenna arrays integrated with photodiodes. One uses a leaky-wave antenna in a scalable layout to obtain frequency-selective beamsteering. For the other, we propose and demonstrate photonic-enabled beam switching as a pragmatic way to achieve a highly directive, switchable beam with quasi-continuous coverage. Finally, stemming from our investigations, we have also developed a theoretical model to analyze the scan impedance in infinite phased arrays of dipoles.
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https://theses.hal.science/tel-03384699
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Submitted on : Tuesday, October 19, 2021 - 10:07:16 AM
Last modification on : Wednesday, April 27, 2022 - 4:24:04 AM

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PASCUAL_GRACIA_Alvaro.pdf
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  • HAL Id : tel-03384699, version 1

Citation

Álvaro Pascual-Gracia. Mm-wave photonic-enabled antenna arrays. Electronics. Université Rennes 1, 2021. English. ⟨NNT : 2021REN1S032⟩. ⟨tel-03384699⟩

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