Stacked Geodesic Lenses for Radar Applications in the W-Band
| Autor: | German Leon, Omar Orgeira, Nelson J. G. Fonseca, Oscar Quevedo-Teruel |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | RUO. Repositorio Institucional de la Universidad de Oviedo instname |
| ISSN: | 2020-1141 |
| Popis: | European Conference on Antennas and Propagation (16th. 2022. Madrid) New radar architectures employ multiple transmitters and receivers to enhance their performance, combining wide and narrow beams to improve the spatial resolution. In this contribution, two antenna system configurations based on stacked geodesic lenses are compared. These lenses are fully-metallic parallel plate waveguides that present very low transmission losses in the millimetre-wave band. Narrow beams are generated by a 15-port Luneburg-Rinehart lens with a scanning span of 50 and 23.4 dBi gain at 77 GHz. For wide beams, two alternatives are proposed. One alternative is a 3-port defocused lens antenna with a scanning angle of 50 degree and 14.5 dBi gain. The second proposal is a 12-port Luneburg-Rinehart lens fed with 1-to-4 power dividers forming a 3-port antenna with a scanning span of 45.5 and 16.2 dBi gain. This work has been supported in part by the Spanish Ministry of Science and Innovation and the Spanish Research Agency, under projects ARTEINE (TEC2017- 86619-R), ENHANCE-5G (PID2020-114172RB-C21 / AEI / 10.13039/501100011033) and IDI/2021/000097 (Gobierno del Principado de Asturias). The work of O. Quevedo-Teruel was sponsored by the Office of Naval Research (ONR), under grant number N62909-20-1-2040. The views and conclusions contained herein are those of the authors only and should not be interpreted as representing those of ONR, the U.S. Navy or the U.S. Government. |
| Databáze: | OpenAIRE |
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