3.8 Proceedings Paper

High Aperture Efficiency Plastic Lens Antenna for Scanning Lens Phased Array at 180 GHz

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IEEE
DOI: 10.1109/IRMMW-THz50926.2021.9567550

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In this work, a plastic resonant leaky-wave lens antenna with high aperture efficiency (>80%) over a 1:2 bandwidth at 180 GHz is presented. This antenna is suitable for next-generation wireless and sensing applications requiring high-directivity steerable beams. The high aperture efficiency is achieved through annular corrugations in the ground plane combined with a leaky-wave resonant cavity, as demonstrated through measurements of a WR-5 prototype.
In this contribution, we present a plastic resonant leaky-wave lens antenna with high aperture efficiency (>80%) over a 1:2 bandwidth centered at 180 GHz. This antenna can be integrated in a scanning lens phased array architecture for next-generation wireless and sensing applications that require high-directivity steerable beams. The high aperture efficiency is achieved thanks to the combination of annular corrugations in the ground plane with a leaky-wave resonant cavity. A WR-5 (140-220 GHz) prototype is manufactured and measured in terms of reflection coefficient, radiation patterns, directivity, losses, cross-polarization and scan performance, showing excellent agreement with simulations.

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