An Ultra-Wideband Leaky Lens Antenna for Broadband Spectroscopic Imaging Applications

Journal article (2020)

Authors

Sebastian Hähnle SRON–Netherlands Institute for Space Research
Ozan Yurduseven Huawei Technologies
Sven van Berkel Tera-Hertz Sensing
Nuroa Llombart Tera-Hertz Sensing
Juan Bueno SRON–Netherlands Institute for Space Research
S. Yates SRON–Netherlands Institute for Space Research
Vignesh Murugesan SRON–Netherlands Institute for Space Research
D.J. Thoen Tera-Hertz Sensing
Andrea Neto Tera-Hertz Sensing
J. J.A. Baselmans Tera-Hertz Sensing
Research Group
Tera-Hertz Sensing
Copyright: © 2020 S.A. Hähnle, Ozan Yurduseven, S.L. van Berkel, Nuria Llombart, Juan Bueno, Stephen J.C. Yates, Vignesh Murugesan, David Thoen, A. Neto, J.J.A. Baselmans
DOI: https://doi.org/10.1109/TAP.2019.2963563
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Published Date

2020

Language

English

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Research Group

Tera-Hertz Sensing

Abstract

We present the design, fabrication, and characterization of a broadband leaky lens antenna for broadband, spectroscopic imaging applications. The antenna is designed for operation in the 300-900 GHz band. We integrate the antenna directly into an Al-NbTiN hybrid microwave kinetic inductance detector (MKID) to measure the beam pattern and absolute coupling efficiency at three frequency bands centered around 350, 650, and 850 GHz, covering the full antenna band. We find an aperture efficiency \eta _{ap} \approx 0.4 over the whole frequency band, limited by lens reflections. We find a good match with simulations for both the patterns and efficiency, demonstrating a 1:3 bandwidth in the submillimeter wavelength range for future on-chip spectrometers.

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