Dual-band leaky-wave lens antenna for submillimeter-wave heterodyne instruments
S. Bosma (TU Delft - Tera-Hertz Sensing)
Maria Alonso Del Pino (California Institute of Technology)
Darwin Blanco Blanco (TU Delft - Tera-Hertz Sensing)
C. Jung-Kubiak (California Institute of Technology)
Nuria Llombart Llombart (TU Delft - Tera-Hertz Sensing)
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Abstract
In this contribution, we propose an antenna for a dual-band focal plane array (FPA) heterodyne receiver at 210-240 GHz and 500-580 GHz to perform cometary observations. The proposed antenna is composed of a fused silica lens fed by a leaky wave waveguide feed. The dual-band leaky wave feed is based on a single-layer Frequency Selective Surface (FSS) with a transformer layer which allows to have a quasi-optical system that achieves a footprint of the field of view with overlapped beams and equal beamwidths for both frequency bands. A single pixel antenna prototype is currently being developed.