In this contribution, we propose a hybrid electromechanical scanning antenna array architecture suitable for highly directive phased arrays at submillimeter wavelengths with field-of-views (FoV) of+/-30 degrees. The concept relies on combining electrical phase shifting of a sparse array with a mechanical translation of an array of lenses. The use of a sparse phased array significantly simplifies the RF front-end, while the translation of a lens array steers the element patterns to angles off-broadside, reducing the impact of grating lobes over a wide FoV. The mechanical movement of the lens array can be done using a low-weight, low-power piezo-actuator. In order to achieve wide bandwidth and steering angles, a novel leaky wave feed concept is also introduced. A 540 GHz prototype is currently under fabrication.
|Title of host publication||IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves|
|Number of pages||2|
|Publication status||Published - 1 Sep 2019|
|Event||44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France|
Duration: 1 Sep 2019 → 6 Sep 2019
|Conference||44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019|
|Period||1/09/19 → 6/09/19|