High Aperture Efficiency Plastic Lens Antenna for Scanning Lens Phased Array at 180 GHz
Sjoerd Bosma (TU Delft - Tera-Hertz Sensing)
N. van Rooijen (TU Delft - Tera-Hertz Sensing)
Maria Alonso Del Pino (TU Delft - Tera-Hertz Sensing)
Nuria Llombart Llombart (TU Delft - Tera-Hertz Sensing)
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Abstract
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.